Pileus Git - ~andy/linux/blob - net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/slab.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <linux/etherdevice.h>
  18 #include <net/net_namespace.h>
  19 #include <net/genetlink.h>
  20 #include <net/cfg80211.h>
  21 #include <net/sock.h>
  22 #include <net/inet_connection_sock.h>
  23 #include "core.h"
  24 #include "nl80211.h"
  25 #include "reg.h"
  26 #include "rdev-ops.h"
  27
  28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  29                                    struct genl_info *info,
  30                                    struct cfg80211_crypto_settings *settings,
  31                                    int cipher_limit);
  32
  33 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  34                             struct genl_info *info);
  35 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  36                               struct genl_info *info);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam = {
  40         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  41         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  42         .hdrsize = 0,                   /* no private header */
  43         .version = 1,                   /* no particular meaning now */
  44         .maxattr = NL80211_ATTR_MAX,
  45         .netnsok = true,
  46         .pre_doit = nl80211_pre_doit,
  47         .post_doit = nl80211_post_doit,
  48 };
  49
  50 /* multicast groups */
  51 enum nl80211_multicast_groups {
  52         NL80211_MCGRP_CONFIG,
  53         NL80211_MCGRP_SCAN,
  54         NL80211_MCGRP_REGULATORY,
  55         NL80211_MCGRP_MLME,
  56         NL80211_MCGRP_VENDOR,
  57         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  58 };
  59
  60 static const struct genl_multicast_group nl80211_mcgrps[] = {
  61         [NL80211_MCGRP_CONFIG] = { .name = "config", },
  62         [NL80211_MCGRP_SCAN] = { .name = "scan", },
  63         [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
  64         [NL80211_MCGRP_MLME] = { .name = "mlme", },
  65         [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
  66 #ifdef CONFIG_NL80211_TESTMODE
  67         [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
  68 #endif
  69 };
  70
  71 /* returns ERR_PTR values */
  72 static struct wireless_dev *
  73 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  74 {
  75         struct cfg80211_registered_device *rdev;
  76         struct wireless_dev *result = NULL;
  77         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  78         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  79         u64 wdev_id;
  80         int wiphy_idx = -1;
  81         int ifidx = -1;
  82
  83         ASSERT_RTNL();
  84
  85         if (!have_ifidx && !have_wdev_id)
  86                 return ERR_PTR(-EINVAL);
  87
  88         if (have_ifidx)
  89                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  90         if (have_wdev_id) {
  91                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  92                 wiphy_idx = wdev_id >> 32;
  93         }
  94
  95         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  96                 struct wireless_dev *wdev;
  97
  98                 if (wiphy_net(&rdev->wiphy) != netns)
  99                         continue;
 100
 101                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 102                         continue;
 103
 104                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 105                         if (have_ifidx && wdev->netdev &&
 106                             wdev->netdev->ifindex == ifidx) {
 107                                 result = wdev;
 108                                 break;
 109                         }
 110                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 111                                 result = wdev;
 112                                 break;
 113                         }
 114                 }
 115
 116                 if (result)
 117                         break;
 118         }
 119
 120         if (result)
 121                 return result;
 122         return ERR_PTR(-ENODEV);
 123 }
 124
 125 static struct cfg80211_registered_device *
 126 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 127 {
 128         struct cfg80211_registered_device *rdev = NULL, *tmp;
 129         struct net_device *netdev;
 130
 131         ASSERT_RTNL();
 132
 133         if (!attrs[NL80211_ATTR_WIPHY] &&
 134             !attrs[NL80211_ATTR_IFINDEX] &&
 135             !attrs[NL80211_ATTR_WDEV])
 136                 return ERR_PTR(-EINVAL);
 137
 138         if (attrs[NL80211_ATTR_WIPHY])
 139                 rdev = cfg80211_rdev_by_wiphy_idx(
 140                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 141
 142         if (attrs[NL80211_ATTR_WDEV]) {
 143                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 144                 struct wireless_dev *wdev;
 145                 bool found = false;
 146
 147                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 148                 if (tmp) {
 149                         /* make sure wdev exists */
 150                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 151                                 if (wdev->identifier != (u32)wdev_id)
 152                                         continue;
 153                                 found = true;
 154                                 break;
 155                         }
 156
 157                         if (!found)
 158                                 tmp = NULL;
 159
 160                         if (rdev && tmp != rdev)
 161                                 return ERR_PTR(-EINVAL);
 162                         rdev = tmp;
 163                 }
 164         }
 165
 166         if (attrs[NL80211_ATTR_IFINDEX]) {
 167                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 168                 netdev = __dev_get_by_index(netns, ifindex);
 169                 if (netdev) {
 170                         if (netdev->ieee80211_ptr)
 171                                 tmp = wiphy_to_dev(
 172                                                 netdev->ieee80211_ptr->wiphy);
 173                         else
 174                                 tmp = NULL;
 175
 176                         /* not wireless device -- return error */
 177                         if (!tmp)
 178                                 return ERR_PTR(-EINVAL);
 179
 180                         /* mismatch -- return error */
 181                         if (rdev && tmp != rdev)
 182                                 return ERR_PTR(-EINVAL);
 183
 184                         rdev = tmp;
 185                 }
 186         }
 187
 188         if (!rdev)
 189                 return ERR_PTR(-ENODEV);
 190
 191         if (netns != wiphy_net(&rdev->wiphy))
 192                 return ERR_PTR(-ENODEV);
 193
 194         return rdev;
 195 }
 196
 197 /*
 198  * This function returns a pointer to the driver
 199  * that the genl_info item that is passed refers to.
 200  *
 201  * The result of this can be a PTR_ERR and hence must
 202  * be checked with IS_ERR() for errors.
 203  */
 204 static struct cfg80211_registered_device *
 205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 206 {
 207         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 208 }
 209
 210 /* policy for the attributes */
 211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 212         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 213         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 214                                       .len = 20-1 },
 215         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 216
 217         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 218         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 219         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 222
 223         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 224         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 226         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 228
 229         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 230         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 231         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 232
 233         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 234         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 235
 236         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 237         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 238                                     .len = WLAN_MAX_KEY_LEN },
 239         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 240         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 241         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 242         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 243         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 244
 245         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 246         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 247         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 248                                        .len = IEEE80211_MAX_DATA_LEN },
 249         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 252         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 253         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 255                                                .len = NL80211_MAX_SUPP_RATES },
 256         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 257         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 258         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 259         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 260                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 261         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 262
 263         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 264         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 265
 266         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 267         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 268         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 270                                            .len = NL80211_MAX_SUPP_RATES },
 271         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 272
 273         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 274         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 275
 276         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 277
 278         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 279         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 280                               .len = IEEE80211_MAX_DATA_LEN },
 281         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 282         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 283
 284         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 285                                 .len = IEEE80211_MAX_SSID_LEN },
 286         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 287         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 288         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 289         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 290         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 291         [NL80211_ATTR_STA_FLAGS2] = {
 292                 .len = sizeof(struct nl80211_sta_flag_update),
 293         },
 294         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 295         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 296         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 298         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 300         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 301         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 302         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 303                                  .len = WLAN_PMKID_LEN },
 304         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 305         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 306         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 307         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 308                                  .len = IEEE80211_MAX_DATA_LEN },
 309         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 310         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 311         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 312         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 313         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 314         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 315         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 316         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 317         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 318         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 319         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 320         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 321         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 322         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 323         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 324         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 325         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 327         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 328         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 329                                          .len = IEEE80211_MAX_DATA_LEN },
 330         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 333         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 334         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 336         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 337         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 339         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 340         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 342                                       .len = IEEE80211_MAX_DATA_LEN },
 343         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 344         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 346                 .len = NL80211_HT_CAPABILITY_LEN
 347         },
 348         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 349         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 350         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 351         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 352         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 353         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 354         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 355         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 356         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 357         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 358         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 359         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 360         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 361         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 362         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 363         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 364         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 365                 .len = NL80211_VHT_CAPABILITY_LEN,
 366         },
 367         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 368         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 369                                   .len = IEEE80211_MAX_DATA_LEN },
 370         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 372         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 373         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 374         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
 375         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
 376         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 377         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 379         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 380         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 381         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 382         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 383         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 384                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 385 };
 386
 387 /* policy for the key attributes */
 388 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 389         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 390         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 391         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 392         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 393         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 394         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 395         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 396         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 397 };
 398
 399 /* policy for the key default flags */
 400 static const struct nla_policy
 401 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 402         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 403         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 404 };
 405
 406 /* policy for WoWLAN attributes */
 407 static const struct nla_policy
 408 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 409         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 410         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 411         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 412         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 413         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 414         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 415         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 416         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 417         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 418 };
 419
 420 static const struct nla_policy
 421 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 422         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 423         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 424         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 425         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 426         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 427         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 428         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 429                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 430         },
 431         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 432                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 433         },
 434         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 435         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 436         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 437 };
 438
 439 /* policy for coalesce rule attributes */
 440 static const struct nla_policy
 441 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 442         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 443         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 444         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 445 };
 446
 447 /* policy for GTK rekey offload attributes */
 448 static const struct nla_policy
 449 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 450         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 451         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 452         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 453 };
 454
 455 static const struct nla_policy
 456 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 457         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 458                                                  .len = IEEE80211_MAX_SSID_LEN },
 459         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 460 };
 461
 462 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 463                                      struct netlink_callback *cb,
 464                                      struct cfg80211_registered_device **rdev,
 465                                      struct wireless_dev **wdev)
 466 {
 467         int err;
 468
 469         rtnl_lock();
 470
 471         if (!cb->args[0]) {
 472                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 473                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 474                                   nl80211_policy);
 475                 if (err)
 476                         goto out_unlock;
 477
 478                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 479                                                    nl80211_fam.attrbuf);
 480                 if (IS_ERR(*wdev)) {
 481                         err = PTR_ERR(*wdev);
 482                         goto out_unlock;
 483                 }
 484                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 485                 /* 0 is the first index - add 1 to parse only once */
 486                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 487                 cb->args[1] = (*wdev)->identifier;
 488         } else {
 489                 /* subtract the 1 again here */
 490                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 491                 struct wireless_dev *tmp;
 492
 493                 if (!wiphy) {
 494                         err = -ENODEV;
 495                         goto out_unlock;
 496                 }
 497                 *rdev = wiphy_to_dev(wiphy);
 498                 *wdev = NULL;
 499
 500                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 501                         if (tmp->identifier == cb->args[1]) {
 502                                 *wdev = tmp;
 503                                 break;
 504                         }
 505                 }
 506
 507                 if (!*wdev) {
 508                         err = -ENODEV;
 509                         goto out_unlock;
 510                 }
 511         }
 512
 513         return 0;
 514  out_unlock:
 515         rtnl_unlock();
 516         return err;
 517 }
 518
 519 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 520 {
 521         rtnl_unlock();
 522 }
 523
 524 /* IE validation */
 525 static bool is_valid_ie_attr(const struct nlattr *attr)
 526 {
 527         const u8 *pos;
 528         int len;
 529
 530         if (!attr)
 531                 return true;
 532
 533         pos = nla_data(attr);
 534         len = nla_len(attr);
 535
 536         while (len) {
 537                 u8 elemlen;
 538
 539                 if (len < 2)
 540                         return false;
 541                 len -= 2;
 542
 543                 elemlen = pos[1];
 544                 if (elemlen > len)
 545                         return false;
 546
 547                 len -= elemlen;
 548                 pos += 2 + elemlen;
 549         }
 550
 551         return true;
 552 }
 553
 554 /* message building helper */
 555 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 556                                    int flags, u8 cmd)
 557 {
 558         /* since there is no private header just add the generic one */
 559         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 560 }
 561
 562 static int nl80211_msg_put_channel(struct sk_buff *msg,
 563                                    struct ieee80211_channel *chan,
 564                                    bool large)
 565 {
 566         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 567                         chan->center_freq))
 568                 goto nla_put_failure;
 569
 570         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 571             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 572                 goto nla_put_failure;
 573         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 574                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 575                         goto nla_put_failure;
 576                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 577                         goto nla_put_failure;
 578         }
 579         if (chan->flags & IEEE80211_CHAN_RADAR) {
 580                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 581                         goto nla_put_failure;
 582                 if (large) {
 583                         u32 time;
 584
 585                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 586
 587                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 588                                         chan->dfs_state))
 589                                 goto nla_put_failure;
 590                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 591                                         time))
 592                                 goto nla_put_failure;
 593                 }
 594         }
 595
 596         if (large) {
 597                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 598                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 599                         goto nla_put_failure;
 600                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 601                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 602                         goto nla_put_failure;
 603                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 604                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 605                         goto nla_put_failure;
 606                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 607                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 608                         goto nla_put_failure;
 609         }
 610
 611         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 612                         DBM_TO_MBM(chan->max_power)))
 613                 goto nla_put_failure;
 614
 615         return 0;
 616
 617  nla_put_failure:
 618         return -ENOBUFS;
 619 }
 620
 621 /* netlink command implementations */
 622
 623 struct key_parse {
 624         struct key_params p;
 625         int idx;
 626         int type;
 627         bool def, defmgmt;
 628         bool def_uni, def_multi;
 629 };
 630
 631 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 632 {
 633         struct nlattr *tb[NL80211_KEY_MAX + 1];
 634         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 635                                    nl80211_key_policy);
 636         if (err)
 637                 return err;
 638
 639         k->def = !!tb[NL80211_KEY_DEFAULT];
 640         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 641
 642         if (k->def) {
 643                 k->def_uni = true;
 644                 k->def_multi = true;
 645         }
 646         if (k->defmgmt)
 647                 k->def_multi = true;
 648
 649         if (tb[NL80211_KEY_IDX])
 650                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 651
 652         if (tb[NL80211_KEY_DATA]) {
 653                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 654                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 655         }
 656
 657         if (tb[NL80211_KEY_SEQ]) {
 658                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 659                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 660         }
 661
 662         if (tb[NL80211_KEY_CIPHER])
 663                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 664
 665         if (tb[NL80211_KEY_TYPE]) {
 666                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 667                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 668                         return -EINVAL;
 669         }
 670
 671         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 672                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 673                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 674                                        tb[NL80211_KEY_DEFAULT_TYPES],
 675                                        nl80211_key_default_policy);
 676                 if (err)
 677                         return err;
 678
 679                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 680                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 681         }
 682
 683         return 0;
 684 }
 685
 686 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 687 {
 688         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 689                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 690                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 691         }
 692
 693         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 694                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 695                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 696         }
 697
 698         if (info->attrs[NL80211_ATTR_KEY_IDX])
 699                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 700
 701         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 702                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 703
 704         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 705         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 706
 707         if (k->def) {
 708                 k->def_uni = true;
 709                 k->def_multi = true;
 710         }
 711         if (k->defmgmt)
 712                 k->def_multi = true;
 713
 714         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 715                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 716                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 717                         return -EINVAL;
 718         }
 719
 720         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 721                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 722                 int err = nla_parse_nested(
 723                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 724                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 725                                 nl80211_key_default_policy);
 726                 if (err)
 727                         return err;
 728
 729                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 730                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 731         }
 732
 733         return 0;
 734 }
 735
 736 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 737 {
 738         int err;
 739
 740         memset(k, 0, sizeof(*k));
 741         k->idx = -1;
 742         k->type = -1;
 743
 744         if (info->attrs[NL80211_ATTR_KEY])
 745                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 746         else
 747                 err = nl80211_parse_key_old(info, k);
 748
 749         if (err)
 750                 return err;
 751
 752         if (k->def && k->defmgmt)
 753                 return -EINVAL;
 754
 755         if (k->defmgmt) {
 756                 if (k->def_uni || !k->def_multi)
 757                         return -EINVAL;
 758         }
 759
 760         if (k->idx != -1) {
 761                 if (k->defmgmt) {
 762                         if (k->idx < 4 || k->idx > 5)
 763                                 return -EINVAL;
 764                 } else if (k->def) {
 765                         if (k->idx < 0 || k->idx > 3)
 766                                 return -EINVAL;
 767                 } else {
 768                         if (k->idx < 0 || k->idx > 5)
 769                                 return -EINVAL;
 770                 }
 771         }
 772
 773         return 0;
 774 }
 775
 776 static struct cfg80211_cached_keys *
 777 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 778                        struct nlattr *keys, bool *no_ht)
 779 {
 780         struct key_parse parse;
 781         struct nlattr *key;
 782         struct cfg80211_cached_keys *result;
 783         int rem, err, def = 0;
 784
 785         result = kzalloc(sizeof(*result), GFP_KERNEL);
 786         if (!result)
 787                 return ERR_PTR(-ENOMEM);
 788
 789         result->def = -1;
 790         result->defmgmt = -1;
 791
 792         nla_for_each_nested(key, keys, rem) {
 793                 memset(&parse, 0, sizeof(parse));
 794                 parse.idx = -1;
 795
 796                 err = nl80211_parse_key_new(key, &parse);
 797                 if (err)
 798                         goto error;
 799                 err = -EINVAL;
 800                 if (!parse.p.key)
 801                         goto error;
 802                 if (parse.idx < 0 || parse.idx > 4)
 803                         goto error;
 804                 if (parse.def) {
 805                         if (def)
 806                                 goto error;
 807                         def = 1;
 808                         result->def = parse.idx;
 809                         if (!parse.def_uni || !parse.def_multi)
 810                                 goto error;
 811                 } else if (parse.defmgmt)
 812                         goto error;
 813                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 814                                                      parse.idx, false, NULL);
 815                 if (err)
 816                         goto error;
 817                 result->params[parse.idx].cipher = parse.p.cipher;
 818                 result->params[parse.idx].key_len = parse.p.key_len;
 819                 result->params[parse.idx].key = result->data[parse.idx];
 820                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 821
 822                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 823                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 824                         if (no_ht)
 825                                 *no_ht = true;
 826                 }
 827         }
 828
 829         return result;
 830  error:
 831         kfree(result);
 832         return ERR_PTR(err);
 833 }
 834
 835 static int nl80211_key_allowed(struct wireless_dev *wdev)
 836 {
 837         ASSERT_WDEV_LOCK(wdev);
 838
 839         switch (wdev->iftype) {
 840         case NL80211_IFTYPE_AP:
 841         case NL80211_IFTYPE_AP_VLAN:
 842         case NL80211_IFTYPE_P2P_GO:
 843         case NL80211_IFTYPE_MESH_POINT:
 844                 break;
 845         case NL80211_IFTYPE_ADHOC:
 846         case NL80211_IFTYPE_STATION:
 847         case NL80211_IFTYPE_P2P_CLIENT:
 848                 if (!wdev->current_bss)
 849                         return -ENOLINK;
 850                 break;
 851         default:
 852                 return -EINVAL;
 853         }
 854
 855         return 0;
 856 }
 857
 858 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 859 {
 860         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 861         int i;
 862
 863         if (!nl_modes)
 864                 goto nla_put_failure;
 865
 866         i = 0;
 867         while (ifmodes) {
 868                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 869                         goto nla_put_failure;
 870                 ifmodes >>= 1;
 871                 i++;
 872         }
 873
 874         nla_nest_end(msg, nl_modes);
 875         return 0;
 876
 877 nla_put_failure:
 878         return -ENOBUFS;
 879 }
 880
 881 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 882                                           struct sk_buff *msg,
 883                                           bool large)
 884 {
 885         struct nlattr *nl_combis;
 886         int i, j;
 887
 888         nl_combis = nla_nest_start(msg,
 889                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 890         if (!nl_combis)
 891                 goto nla_put_failure;
 892
 893         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 894                 const struct ieee80211_iface_combination *c;
 895                 struct nlattr *nl_combi, *nl_limits;
 896
 897                 c = &wiphy->iface_combinations[i];
 898
 899                 nl_combi = nla_nest_start(msg, i + 1);
 900                 if (!nl_combi)
 901                         goto nla_put_failure;
 902
 903                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 904                 if (!nl_limits)
 905                         goto nla_put_failure;
 906
 907                 for (j = 0; j < c->n_limits; j++) {
 908                         struct nlattr *nl_limit;
 909
 910                         nl_limit = nla_nest_start(msg, j + 1);
 911                         if (!nl_limit)
 912                                 goto nla_put_failure;
 913                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 914                                         c->limits[j].max))
 915                                 goto nla_put_failure;
 916                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 917                                                 c->limits[j].types))
 918                                 goto nla_put_failure;
 919                         nla_nest_end(msg, nl_limit);
 920                 }
 921
 922                 nla_nest_end(msg, nl_limits);
 923
 924                 if (c->beacon_int_infra_match &&
 925                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 926                         goto nla_put_failure;
 927                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 928                                 c->num_different_channels) ||
 929                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 930                                 c->max_interfaces))
 931                         goto nla_put_failure;
 932                 if (large &&
 933                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 934                                 c->radar_detect_widths))
 935                         goto nla_put_failure;
 936
 937                 nla_nest_end(msg, nl_combi);
 938         }
 939
 940         nla_nest_end(msg, nl_combis);
 941
 942         return 0;
 943 nla_put_failure:
 944         return -ENOBUFS;
 945 }
 946
 947 #ifdef CONFIG_PM
 948 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 949                                         struct sk_buff *msg)
 950 {
 951         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 952         struct nlattr *nl_tcp;
 953
 954         if (!tcp)
 955                 return 0;
 956
 957         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 958         if (!nl_tcp)
 959                 return -ENOBUFS;
 960
 961         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 962                         tcp->data_payload_max))
 963                 return -ENOBUFS;
 964
 965         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 966                         tcp->data_payload_max))
 967                 return -ENOBUFS;
 968
 969         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 970                 return -ENOBUFS;
 971
 972         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 973                                 sizeof(*tcp->tok), tcp->tok))
 974                 return -ENOBUFS;
 975
 976         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 977                         tcp->data_interval_max))
 978                 return -ENOBUFS;
 979
 980         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 981                         tcp->wake_payload_max))
 982                 return -ENOBUFS;
 983
 984         nla_nest_end(msg, nl_tcp);
 985         return 0;
 986 }
 987
 988 static int nl80211_send_wowlan(struct sk_buff *msg,
 989                                struct cfg80211_registered_device *dev,
 990                                bool large)
 991 {
 992         struct nlattr *nl_wowlan;
 993
 994         if (!dev->wiphy.wowlan)
 995                 return 0;
 996
 997         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 998         if (!nl_wowlan)
 999                 return -ENOBUFS;
1000
1001         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1002              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1003             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1004              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1005             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1006              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1007             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1008              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1009             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1010              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1011             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1012              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1013             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1014              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1015             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1016              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1017                 return -ENOBUFS;
1018
1019         if (dev->wiphy.wowlan->n_patterns) {
1020                 struct nl80211_pattern_support pat = {
1021                         .max_patterns = dev->wiphy.wowlan->n_patterns,
1022                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
1023                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
1024                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1025                 };
1026
1027                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1028                             sizeof(pat), &pat))
1029                         return -ENOBUFS;
1030         }
1031
1032         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1033                 return -ENOBUFS;
1034
1035         nla_nest_end(msg, nl_wowlan);
1036
1037         return 0;
1038 }
1039 #endif
1040
1041 static int nl80211_send_coalesce(struct sk_buff *msg,
1042                                  struct cfg80211_registered_device *dev)
1043 {
1044         struct nl80211_coalesce_rule_support rule;
1045
1046         if (!dev->wiphy.coalesce)
1047                 return 0;
1048
1049         rule.max_rules = dev->wiphy.coalesce->n_rules;
1050         rule.max_delay = dev->wiphy.coalesce->max_delay;
1051         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1052         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1053         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1054         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1055
1056         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1057                 return -ENOBUFS;
1058
1059         return 0;
1060 }
1061
1062 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1063                                       struct ieee80211_supported_band *sband)
1064 {
1065         struct nlattr *nl_rates, *nl_rate;
1066         struct ieee80211_rate *rate;
1067         int i;
1068
1069         /* add HT info */
1070         if (sband->ht_cap.ht_supported &&
1071             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1072                      sizeof(sband->ht_cap.mcs),
1073                      &sband->ht_cap.mcs) ||
1074              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1075                          sband->ht_cap.cap) ||
1076              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1077                         sband->ht_cap.ampdu_factor) ||
1078              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1079                         sband->ht_cap.ampdu_density)))
1080                 return -ENOBUFS;
1081
1082         /* add VHT info */
1083         if (sband->vht_cap.vht_supported &&
1084             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1085                      sizeof(sband->vht_cap.vht_mcs),
1086                      &sband->vht_cap.vht_mcs) ||
1087              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1088                          sband->vht_cap.cap)))
1089                 return -ENOBUFS;
1090
1091         /* add bitrates */
1092         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1093         if (!nl_rates)
1094                 return -ENOBUFS;
1095
1096         for (i = 0; i < sband->n_bitrates; i++) {
1097                 nl_rate = nla_nest_start(msg, i);
1098                 if (!nl_rate)
1099                         return -ENOBUFS;
1100
1101                 rate = &sband->bitrates[i];
1102                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1103                                 rate->bitrate))
1104                         return -ENOBUFS;
1105                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1106                     nla_put_flag(msg,
1107                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1108                         return -ENOBUFS;
1109
1110                 nla_nest_end(msg, nl_rate);
1111         }
1112
1113         nla_nest_end(msg, nl_rates);
1114
1115         return 0;
1116 }
1117
1118 static int
1119 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1120                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1121 {
1122         u16 stypes;
1123         struct nlattr *nl_ftypes, *nl_ifs;
1124         enum nl80211_iftype ift;
1125         int i;
1126
1127         if (!mgmt_stypes)
1128                 return 0;
1129
1130         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1131         if (!nl_ifs)
1132                 return -ENOBUFS;
1133
1134         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1135                 nl_ftypes = nla_nest_start(msg, ift);
1136                 if (!nl_ftypes)
1137                         return -ENOBUFS;
1138                 i = 0;
1139                 stypes = mgmt_stypes[ift].tx;
1140                 while (stypes) {
1141                         if ((stypes & 1) &&
1142                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1143                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1144                                 return -ENOBUFS;
1145                         stypes >>= 1;
1146                         i++;
1147                 }
1148                 nla_nest_end(msg, nl_ftypes);
1149         }
1150
1151         nla_nest_end(msg, nl_ifs);
1152
1153         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1154         if (!nl_ifs)
1155                 return -ENOBUFS;
1156
1157         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1158                 nl_ftypes = nla_nest_start(msg, ift);
1159                 if (!nl_ftypes)
1160                         return -ENOBUFS;
1161                 i = 0;
1162                 stypes = mgmt_stypes[ift].rx;
1163                 while (stypes) {
1164                         if ((stypes & 1) &&
1165                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1166                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1167                                 return -ENOBUFS;
1168                         stypes >>= 1;
1169                         i++;
1170                 }
1171                 nla_nest_end(msg, nl_ftypes);
1172         }
1173         nla_nest_end(msg, nl_ifs);
1174
1175         return 0;
1176 }
1177
1178 struct nl80211_dump_wiphy_state {
1179         s64 filter_wiphy;
1180         long start;
1181         long split_start, band_start, chan_start;
1182         bool split;
1183 };
1184
1185 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1186                               struct sk_buff *msg, u32 portid, u32 seq,
1187                               int flags, struct nl80211_dump_wiphy_state *state)
1188 {
1189         void *hdr;
1190         struct nlattr *nl_bands, *nl_band;
1191         struct nlattr *nl_freqs, *nl_freq;
1192         struct nlattr *nl_cmds;
1193         enum ieee80211_band band;
1194         struct ieee80211_channel *chan;
1195         int i;
1196         const struct ieee80211_txrx_stypes *mgmt_stypes =
1197                                 dev->wiphy.mgmt_stypes;
1198         u32 features;
1199
1200         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1201         if (!hdr)
1202                 return -ENOBUFS;
1203
1204         if (WARN_ON(!state))
1205                 return -EINVAL;
1206
1207         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1208             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1209                            wiphy_name(&dev->wiphy)) ||
1210             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1211                         cfg80211_rdev_list_generation))
1212                 goto nla_put_failure;
1213
1214         switch (state->split_start) {
1215         case 0:
1216                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1217                                dev->wiphy.retry_short) ||
1218                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1219                                dev->wiphy.retry_long) ||
1220                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1221                                 dev->wiphy.frag_threshold) ||
1222                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1223                                 dev->wiphy.rts_threshold) ||
1224                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1225                                dev->wiphy.coverage_class) ||
1226                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1227                                dev->wiphy.max_scan_ssids) ||
1228                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1229                                dev->wiphy.max_sched_scan_ssids) ||
1230                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1231                                 dev->wiphy.max_scan_ie_len) ||
1232                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1233                                 dev->wiphy.max_sched_scan_ie_len) ||
1234                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1235                                dev->wiphy.max_match_sets))
1236                         goto nla_put_failure;
1237
1238                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1239                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1240                         goto nla_put_failure;
1241                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1242                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1243                         goto nla_put_failure;
1244                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1245                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1246                         goto nla_put_failure;
1247                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1248                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1249                         goto nla_put_failure;
1250                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1251                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1252                         goto nla_put_failure;
1253                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1254                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1255                         goto nla_put_failure;
1256                 state->split_start++;
1257                 if (state->split)
1258                         break;
1259         case 1:
1260                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1261                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1262                             dev->wiphy.cipher_suites))
1263                         goto nla_put_failure;
1264
1265                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1266                                dev->wiphy.max_num_pmkids))
1267                         goto nla_put_failure;
1268
1269                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1270                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1271                         goto nla_put_failure;
1272
1273                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1274                                 dev->wiphy.available_antennas_tx) ||
1275                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1276                                 dev->wiphy.available_antennas_rx))
1277                         goto nla_put_failure;
1278
1279                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1280                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1281                                 dev->wiphy.probe_resp_offload))
1282                         goto nla_put_failure;
1283
1284                 if ((dev->wiphy.available_antennas_tx ||
1285                      dev->wiphy.available_antennas_rx) &&
1286                     dev->ops->get_antenna) {
1287                         u32 tx_ant = 0, rx_ant = 0;
1288                         int res;
1289                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1290                         if (!res) {
1291                                 if (nla_put_u32(msg,
1292                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1293                                                 tx_ant) ||
1294                                     nla_put_u32(msg,
1295                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1296                                                 rx_ant))
1297                                         goto nla_put_failure;
1298                         }
1299                 }
1300
1301                 state->split_start++;
1302                 if (state->split)
1303                         break;
1304         case 2:
1305                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1306                                         dev->wiphy.interface_modes))
1307                                 goto nla_put_failure;
1308                 state->split_start++;
1309                 if (state->split)
1310                         break;
1311         case 3:
1312                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1313                 if (!nl_bands)
1314                         goto nla_put_failure;
1315
1316                 for (band = state->band_start;
1317                      band < IEEE80211_NUM_BANDS; band++) {
1318                         struct ieee80211_supported_band *sband;
1319
1320                         sband = dev->wiphy.bands[band];
1321
1322                         if (!sband)
1323                                 continue;
1324
1325                         nl_band = nla_nest_start(msg, band);
1326                         if (!nl_band)
1327                                 goto nla_put_failure;
1328
1329                         switch (state->chan_start) {
1330                         case 0:
1331                                 if (nl80211_send_band_rateinfo(msg, sband))
1332                                         goto nla_put_failure;
1333                                 state->chan_start++;
1334                                 if (state->split)
1335                                         break;
1336                         default:
1337                                 /* add frequencies */
1338                                 nl_freqs = nla_nest_start(
1339                                         msg, NL80211_BAND_ATTR_FREQS);
1340                                 if (!nl_freqs)
1341                                         goto nla_put_failure;
1342
1343                                 for (i = state->chan_start - 1;
1344                                      i < sband->n_channels;
1345                                      i++) {
1346                                         nl_freq = nla_nest_start(msg, i);
1347                                         if (!nl_freq)
1348                                                 goto nla_put_failure;
1349
1350                                         chan = &sband->channels[i];
1351
1352                                         if (nl80211_msg_put_channel(
1353                                                         msg, chan,
1354                                                         state->split))
1355                                                 goto nla_put_failure;
1356
1357                                         nla_nest_end(msg, nl_freq);
1358                                         if (state->split)
1359                                                 break;
1360                                 }
1361                                 if (i < sband->n_channels)
1362                                         state->chan_start = i + 2;
1363                                 else
1364                                         state->chan_start = 0;
1365                                 nla_nest_end(msg, nl_freqs);
1366                         }
1367
1368                         nla_nest_end(msg, nl_band);
1369
1370                         if (state->split) {
1371                                 /* start again here */
1372                                 if (state->chan_start)
1373                                         band--;
1374                                 break;
1375                         }
1376                 }
1377                 nla_nest_end(msg, nl_bands);
1378
1379                 if (band < IEEE80211_NUM_BANDS)
1380                         state->band_start = band + 1;
1381                 else
1382                         state->band_start = 0;
1383
1384                 /* if bands & channels are done, continue outside */
1385                 if (state->band_start == 0 && state->chan_start == 0)
1386                         state->split_start++;
1387                 if (state->split)
1388                         break;
1389         case 4:
1390                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1391                 if (!nl_cmds)
1392                         goto nla_put_failure;
1393
1394                 i = 0;
1395 #define CMD(op, n)                                                      \
1396                  do {                                                   \
1397                         if (dev->ops->op) {                             \
1398                                 i++;                                    \
1399                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1400                                         goto nla_put_failure;           \
1401                         }                                               \
1402                 } while (0)
1403
1404                 CMD(add_virtual_intf, NEW_INTERFACE);
1405                 CMD(change_virtual_intf, SET_INTERFACE);
1406                 CMD(add_key, NEW_KEY);
1407                 CMD(start_ap, START_AP);
1408                 CMD(add_station, NEW_STATION);
1409                 CMD(add_mpath, NEW_MPATH);
1410                 CMD(update_mesh_config, SET_MESH_CONFIG);
1411                 CMD(change_bss, SET_BSS);
1412                 CMD(auth, AUTHENTICATE);
1413                 CMD(assoc, ASSOCIATE);
1414                 CMD(deauth, DEAUTHENTICATE);
1415                 CMD(disassoc, DISASSOCIATE);
1416                 CMD(join_ibss, JOIN_IBSS);
1417                 CMD(join_mesh, JOIN_MESH);
1418                 CMD(set_pmksa, SET_PMKSA);
1419                 CMD(del_pmksa, DEL_PMKSA);
1420                 CMD(flush_pmksa, FLUSH_PMKSA);
1421                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1422                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1423                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1424                 CMD(mgmt_tx, FRAME);
1425                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1426                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1427                         i++;
1428                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1429                                 goto nla_put_failure;
1430                 }
1431                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1432                     dev->ops->join_mesh) {
1433                         i++;
1434                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1435                                 goto nla_put_failure;
1436                 }
1437                 CMD(set_wds_peer, SET_WDS_PEER);
1438                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1439                         CMD(tdls_mgmt, TDLS_MGMT);
1440                         CMD(tdls_oper, TDLS_OPER);
1441                 }
1442                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1443                         CMD(sched_scan_start, START_SCHED_SCAN);
1444                 CMD(probe_client, PROBE_CLIENT);
1445                 CMD(set_noack_map, SET_NOACK_MAP);
1446                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1447                         i++;
1448                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1449                                 goto nla_put_failure;
1450                 }
1451                 CMD(start_p2p_device, START_P2P_DEVICE);
1452                 CMD(set_mcast_rate, SET_MCAST_RATE);
1453                 if (state->split) {
1454                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1455                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1456                         if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1457                                 CMD(channel_switch, CHANNEL_SWITCH);
1458                 }
1459                 CMD(set_qos_map, SET_QOS_MAP);
1460
1461 #ifdef CONFIG_NL80211_TESTMODE
1462                 CMD(testmode_cmd, TESTMODE);
1463 #endif
1464
1465 #undef CMD
1466
1467                 if (dev->ops->connect || dev->ops->auth) {
1468                         i++;
1469                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1470                                 goto nla_put_failure;
1471                 }
1472
1473                 if (dev->ops->disconnect || dev->ops->deauth) {
1474                         i++;
1475                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1476                                 goto nla_put_failure;
1477                 }
1478
1479                 nla_nest_end(msg, nl_cmds);
1480                 state->split_start++;
1481                 if (state->split)
1482                         break;
1483         case 5:
1484                 if (dev->ops->remain_on_channel &&
1485                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1486                     nla_put_u32(msg,
1487                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1488                                 dev->wiphy.max_remain_on_channel_duration))
1489                         goto nla_put_failure;
1490
1491                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1492                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1493                         goto nla_put_failure;
1494
1495                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1496                         goto nla_put_failure;
1497                 state->split_start++;
1498                 if (state->split)
1499                         break;
1500         case 6:
1501 #ifdef CONFIG_PM
1502                 if (nl80211_send_wowlan(msg, dev, state->split))
1503                         goto nla_put_failure;
1504                 state->split_start++;
1505                 if (state->split)
1506                         break;
1507 #else
1508                 state->split_start++;
1509 #endif
1510         case 7:
1511                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1512                                         dev->wiphy.software_iftypes))
1513                         goto nla_put_failure;
1514
1515                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1516                                                    state->split))
1517                         goto nla_put_failure;
1518
1519                 state->split_start++;
1520                 if (state->split)
1521                         break;
1522         case 8:
1523                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1524                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1525                                 dev->wiphy.ap_sme_capa))
1526                         goto nla_put_failure;
1527
1528                 features = dev->wiphy.features;
1529                 /*
1530                  * We can only add the per-channel limit information if the
1531                  * dump is split, otherwise it makes it too big. Therefore
1532                  * only advertise it in that case.
1533                  */
1534                 if (state->split)
1535                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1536                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1537                         goto nla_put_failure;
1538
1539                 if (dev->wiphy.ht_capa_mod_mask &&
1540                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1541                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1542                             dev->wiphy.ht_capa_mod_mask))
1543                         goto nla_put_failure;
1544
1545                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1546                     dev->wiphy.max_acl_mac_addrs &&
1547                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1548                                 dev->wiphy.max_acl_mac_addrs))
1549                         goto nla_put_failure;
1550
1551                 /*
1552                  * Any information below this point is only available to
1553                  * applications that can deal with it being split. This
1554                  * helps ensure that newly added capabilities don't break
1555                  * older tools by overrunning their buffers.
1556                  *
1557                  * We still increment split_start so that in the split
1558                  * case we'll continue with more data in the next round,
1559                  * but break unconditionally so unsplit data stops here.
1560                  */
1561                 state->split_start++;
1562                 break;
1563         case 9:
1564                 if (dev->wiphy.extended_capabilities &&
1565                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1566                              dev->wiphy.extended_capabilities_len,
1567                              dev->wiphy.extended_capabilities) ||
1568                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1569                              dev->wiphy.extended_capabilities_len,
1570                              dev->wiphy.extended_capabilities_mask)))
1571                         goto nla_put_failure;
1572
1573                 if (dev->wiphy.vht_capa_mod_mask &&
1574                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1575                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1576                             dev->wiphy.vht_capa_mod_mask))
1577                         goto nla_put_failure;
1578
1579                 state->split_start++;
1580                 break;
1581         case 10:
1582                 if (nl80211_send_coalesce(msg, dev))
1583                         goto nla_put_failure;
1584
1585                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1586                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1587                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1588                         goto nla_put_failure;
1589                 state->split_start++;
1590                 break;
1591         case 11:
1592                 if (dev->wiphy.n_vendor_commands) {
1593                         const struct nl80211_vendor_cmd_info *info;
1594                         struct nlattr *nested;
1595
1596                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1597                         if (!nested)
1598                                 goto nla_put_failure;
1599
1600                         for (i = 0; i < dev->wiphy.n_vendor_commands; i++) {
1601                                 info = &dev->wiphy.vendor_commands[i].info;
1602                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1603                                         goto nla_put_failure;
1604                         }
1605                         nla_nest_end(msg, nested);
1606                 }
1607
1608                 if (dev->wiphy.n_vendor_events) {
1609                         const struct nl80211_vendor_cmd_info *info;
1610                         struct nlattr *nested;
1611
1612                         nested = nla_nest_start(msg,
1613                                                 NL80211_ATTR_VENDOR_EVENTS);
1614                         if (!nested)
1615                                 goto nla_put_failure;
1616
1617                         for (i = 0; i < dev->wiphy.n_vendor_events; i++) {
1618                                 info = &dev->wiphy.vendor_events[i];
1619                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1620                                         goto nla_put_failure;
1621                         }
1622                         nla_nest_end(msg, nested);
1623                 }
1624
1625                 /* done */
1626                 state->split_start = 0;
1627                 break;
1628         }
1629         return genlmsg_end(msg, hdr);
1630
1631  nla_put_failure:
1632         genlmsg_cancel(msg, hdr);
1633         return -EMSGSIZE;
1634 }
1635
1636 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1637                                     struct netlink_callback *cb,
1638                                     struct nl80211_dump_wiphy_state *state)
1639 {
1640         struct nlattr **tb = nl80211_fam.attrbuf;
1641         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1642                               tb, nl80211_fam.maxattr, nl80211_policy);
1643         /* ignore parse errors for backward compatibility */
1644         if (ret)
1645                 return 0;
1646
1647         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1648         if (tb[NL80211_ATTR_WIPHY])
1649                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1650         if (tb[NL80211_ATTR_WDEV])
1651                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1652         if (tb[NL80211_ATTR_IFINDEX]) {
1653                 struct net_device *netdev;
1654                 struct cfg80211_registered_device *rdev;
1655                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1656
1657                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1658                 if (!netdev)
1659                         return -ENODEV;
1660                 if (netdev->ieee80211_ptr) {
1661                         rdev = wiphy_to_dev(
1662                                 netdev->ieee80211_ptr->wiphy);
1663                         state->filter_wiphy = rdev->wiphy_idx;
1664                 }
1665         }
1666
1667         return 0;
1668 }
1669
1670 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1671 {
1672         int idx = 0, ret;
1673         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1674         struct cfg80211_registered_device *dev;
1675
1676         rtnl_lock();
1677         if (!state) {
1678                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1679                 if (!state) {
1680                         rtnl_unlock();
1681                         return -ENOMEM;
1682                 }
1683                 state->filter_wiphy = -1;
1684                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1685                 if (ret) {
1686                         kfree(state);
1687                         rtnl_unlock();
1688                         return ret;
1689                 }
1690                 cb->args[0] = (long)state;
1691         }
1692
1693         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1694                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1695                         continue;
1696                 if (++idx <= state->start)
1697                         continue;
1698                 if (state->filter_wiphy != -1 &&
1699                     state->filter_wiphy != dev->wiphy_idx)
1700                         continue;
1701                 /* attempt to fit multiple wiphy data chunks into the skb */
1702                 do {
1703                         ret = nl80211_send_wiphy(dev, skb,
1704                                                  NETLINK_CB(cb->skb).portid,
1705                                                  cb->nlh->nlmsg_seq,
1706                                                  NLM_F_MULTI, state);
1707                         if (ret < 0) {
1708                                 /*
1709                                  * If sending the wiphy data didn't fit (ENOBUFS
1710                                  * or EMSGSIZE returned), this SKB is still
1711                                  * empty (so it's not too big because another
1712                                  * wiphy dataset is already in the skb) and
1713                                  * we've not tried to adjust the dump allocation
1714                                  * yet ... then adjust the alloc size to be
1715                                  * bigger, and return 1 but with the empty skb.
1716                                  * This results in an empty message being RX'ed
1717                                  * in userspace, but that is ignored.
1718                                  *
1719                                  * We can then retry with the larger buffer.
1720                                  */
1721                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1722                                     !skb->len &&
1723                                     cb->min_dump_alloc < 4096) {
1724                                         cb->min_dump_alloc = 4096;
1725                                         rtnl_unlock();
1726                                         return 1;
1727                                 }
1728                                 idx--;
1729                                 break;
1730                         }
1731                 } while (state->split_start > 0);
1732                 break;
1733         }
1734         rtnl_unlock();
1735
1736         state->start = idx;
1737
1738         return skb->len;
1739 }
1740
1741 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1742 {
1743         kfree((void *)cb->args[0]);
1744         return 0;
1745 }
1746
1747 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1748 {
1749         struct sk_buff *msg;
1750         struct cfg80211_registered_device *dev = info->user_ptr[0];
1751         struct nl80211_dump_wiphy_state state = {};
1752
1753         msg = nlmsg_new(4096, GFP_KERNEL);
1754         if (!msg)
1755                 return -ENOMEM;
1756
1757         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1758                                &state) < 0) {
1759                 nlmsg_free(msg);
1760                 return -ENOBUFS;
1761         }
1762
1763         return genlmsg_reply(msg, info);
1764 }
1765
1766 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1767         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1768         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1769         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1770         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1771         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1772 };
1773
1774 static int parse_txq_params(struct nlattr *tb[],
1775                             struct ieee80211_txq_params *txq_params)
1776 {
1777         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1778             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1779             !tb[NL80211_TXQ_ATTR_AIFS])
1780                 return -EINVAL;
1781
1782         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1783         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1784         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1785         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1786         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1787
1788         if (txq_params->ac >= NL80211_NUM_ACS)
1789                 return -EINVAL;
1790
1791         return 0;
1792 }
1793
1794 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1795 {
1796         /*
1797          * You can only set the channel explicitly for WDS interfaces,
1798          * all others have their channel managed via their respective
1799          * "establish a connection" command (connect, join, ...)
1800          *
1801          * For AP/GO and mesh mode, the channel can be set with the
1802          * channel userspace API, but is only stored and passed to the
1803          * low-level driver when the AP starts or the mesh is joined.
1804          * This is for backward compatibility, userspace can also give
1805          * the channel in the start-ap or join-mesh commands instead.
1806          *
1807          * Monitors are special as they are normally slaved to
1808          * whatever else is going on, so they have their own special
1809          * operation to set the monitor channel if possible.
1810          */
1811         return !wdev ||
1812                 wdev->iftype == NL80211_IFTYPE_AP ||
1813                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1814                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1815                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1816 }
1817
1818 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1819                                  struct genl_info *info,
1820                                  struct cfg80211_chan_def *chandef)
1821 {
1822         u32 control_freq;
1823
1824         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1825                 return -EINVAL;
1826
1827         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1828
1829         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1830         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1831         chandef->center_freq1 = control_freq;
1832         chandef->center_freq2 = 0;
1833
1834         /* Primary channel not allowed */
1835         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1836                 return -EINVAL;
1837
1838         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1839                 enum nl80211_channel_type chantype;
1840
1841                 chantype = nla_get_u32(
1842                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1843
1844                 switch (chantype) {
1845                 case NL80211_CHAN_NO_HT:
1846                 case NL80211_CHAN_HT20:
1847                 case NL80211_CHAN_HT40PLUS:
1848                 case NL80211_CHAN_HT40MINUS:
1849                         cfg80211_chandef_create(chandef, chandef->chan,
1850                                                 chantype);
1851                         break;
1852                 default:
1853                         return -EINVAL;
1854                 }
1855         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1856                 chandef->width =
1857                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1858                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1859                         chandef->center_freq1 =
1860                                 nla_get_u32(
1861                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1862                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1863                         chandef->center_freq2 =
1864                                 nla_get_u32(
1865                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1866         }
1867
1868         if (!cfg80211_chandef_valid(chandef))
1869                 return -EINVAL;
1870
1871         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1872                                      IEEE80211_CHAN_DISABLED))
1873                 return -EINVAL;
1874
1875         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1876              chandef->width == NL80211_CHAN_WIDTH_10) &&
1877             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1878                 return -EINVAL;
1879
1880         return 0;
1881 }
1882
1883 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1884                                  struct wireless_dev *wdev,
1885                                  struct genl_info *info)
1886 {
1887         struct cfg80211_chan_def chandef;
1888         int result;
1889         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1890
1891         if (wdev)
1892                 iftype = wdev->iftype;
1893
1894         if (!nl80211_can_set_dev_channel(wdev))
1895                 return -EOPNOTSUPP;
1896
1897         result = nl80211_parse_chandef(rdev, info, &chandef);
1898         if (result)
1899                 return result;
1900
1901         switch (iftype) {
1902         case NL80211_IFTYPE_AP:
1903         case NL80211_IFTYPE_P2P_GO:
1904                 if (wdev->beacon_interval) {
1905                         result = -EBUSY;
1906                         break;
1907                 }
1908                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1909                         result = -EINVAL;
1910                         break;
1911                 }
1912                 wdev->preset_chandef = chandef;
1913                 result = 0;
1914                 break;
1915         case NL80211_IFTYPE_MESH_POINT:
1916                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1917                 break;
1918         case NL80211_IFTYPE_MONITOR:
1919                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1920                 break;
1921         default:
1922                 result = -EINVAL;
1923         }
1924
1925         return result;
1926 }
1927
1928 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1929 {
1930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1931         struct net_device *netdev = info->user_ptr[1];
1932
1933         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1934 }
1935
1936 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1937 {
1938         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1939         struct net_device *dev = info->user_ptr[1];
1940         struct wireless_dev *wdev = dev->ieee80211_ptr;
1941         const u8 *bssid;
1942
1943         if (!info->attrs[NL80211_ATTR_MAC])
1944                 return -EINVAL;
1945
1946         if (netif_running(dev))
1947                 return -EBUSY;
1948
1949         if (!rdev->ops->set_wds_peer)
1950                 return -EOPNOTSUPP;
1951
1952         if (wdev->iftype != NL80211_IFTYPE_WDS)
1953                 return -EOPNOTSUPP;
1954
1955         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1956         return rdev_set_wds_peer(rdev, dev, bssid);
1957 }
1958
1959
1960 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1961 {
1962         struct cfg80211_registered_device *rdev;
1963         struct net_device *netdev = NULL;
1964         struct wireless_dev *wdev;
1965         int result = 0, rem_txq_params = 0;
1966         struct nlattr *nl_txq_params;
1967         u32 changed;
1968         u8 retry_short = 0, retry_long = 0;
1969         u32 frag_threshold = 0, rts_threshold = 0;
1970         u8 coverage_class = 0;
1971
1972         ASSERT_RTNL();
1973
1974         /*
1975          * Try to find the wiphy and netdev. Normally this
1976          * function shouldn't need the netdev, but this is
1977          * done for backward compatibility -- previously
1978          * setting the channel was done per wiphy, but now
1979          * it is per netdev. Previous userland like hostapd
1980          * also passed a netdev to set_wiphy, so that it is
1981          * possible to let that go to the right netdev!
1982          */
1983
1984         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1985                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1986
1987                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
1988                 if (netdev && netdev->ieee80211_ptr)
1989                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1990                 else
1991                         netdev = NULL;
1992         }
1993
1994         if (!netdev) {
1995                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1996                                                   info->attrs);
1997                 if (IS_ERR(rdev))
1998                         return PTR_ERR(rdev);
1999                 wdev = NULL;
2000                 netdev = NULL;
2001                 result = 0;
2002         } else
2003                 wdev = netdev->ieee80211_ptr;
2004
2005         /*
2006          * end workaround code, by now the rdev is available
2007          * and locked, and wdev may or may not be NULL.
2008          */
2009
2010         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2011                 result = cfg80211_dev_rename(
2012                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2013
2014         if (result)
2015                 return result;
2016
2017         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2018                 struct ieee80211_txq_params txq_params;
2019                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2020
2021                 if (!rdev->ops->set_txq_params)
2022                         return -EOPNOTSUPP;
2023
2024                 if (!netdev)
2025                         return -EINVAL;
2026
2027                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2028                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2029                         return -EINVAL;
2030
2031                 if (!netif_running(netdev))
2032                         return -ENETDOWN;
2033
2034                 nla_for_each_nested(nl_txq_params,
2035                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2036                                     rem_txq_params) {
2037                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2038                                   nla_data(nl_txq_params),
2039                                   nla_len(nl_txq_params),
2040                                   txq_params_policy);
2041                         result = parse_txq_params(tb, &txq_params);
2042                         if (result)
2043                                 return result;
2044
2045                         result = rdev_set_txq_params(rdev, netdev,
2046                                                      &txq_params);
2047                         if (result)
2048                                 return result;
2049                 }
2050         }
2051
2052         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2053                 result = __nl80211_set_channel(rdev,
2054                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2055                                 info);
2056                 if (result)
2057                         return result;
2058         }
2059
2060         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2061                 struct wireless_dev *txp_wdev = wdev;
2062                 enum nl80211_tx_power_setting type;
2063                 int idx, mbm = 0;
2064
2065                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2066                         txp_wdev = NULL;
2067
2068                 if (!rdev->ops->set_tx_power)
2069                         return -EOPNOTSUPP;
2070
2071                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2072                 type = nla_get_u32(info->attrs[idx]);
2073
2074                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2075                     (type != NL80211_TX_POWER_AUTOMATIC))
2076                         return -EINVAL;
2077
2078                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2079                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2080                         mbm = nla_get_u32(info->attrs[idx]);
2081                 }
2082
2083                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2084                 if (result)
2085                         return result;
2086         }
2087
2088         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2089             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2090                 u32 tx_ant, rx_ant;
2091                 if ((!rdev->wiphy.available_antennas_tx &&
2092                      !rdev->wiphy.available_antennas_rx) ||
2093                     !rdev->ops->set_antenna)
2094                         return -EOPNOTSUPP;
2095
2096                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2097                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2098
2099                 /* reject antenna configurations which don't match the
2100                  * available antenna masks, except for the "all" mask */
2101                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2102                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2103                         return -EINVAL;
2104
2105                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2106                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2107
2108                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2109                 if (result)
2110                         return result;
2111         }
2112
2113         changed = 0;
2114
2115         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2116                 retry_short = nla_get_u8(
2117                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2118                 if (retry_short == 0)
2119                         return -EINVAL;
2120
2121                 changed |= WIPHY_PARAM_RETRY_SHORT;
2122         }
2123
2124         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2125                 retry_long = nla_get_u8(
2126                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2127                 if (retry_long == 0)
2128                         return -EINVAL;
2129
2130                 changed |= WIPHY_PARAM_RETRY_LONG;
2131         }
2132
2133         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2134                 frag_threshold = nla_get_u32(
2135                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2136                 if (frag_threshold < 256)
2137                         return -EINVAL;
2138
2139                 if (frag_threshold != (u32) -1) {
2140                         /*
2141                          * Fragments (apart from the last one) are required to
2142                          * have even length. Make the fragmentation code
2143                          * simpler by stripping LSB should someone try to use
2144                          * odd threshold value.
2145                          */
2146                         frag_threshold &= ~0x1;
2147                 }
2148                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2149         }
2150
2151         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2152                 rts_threshold = nla_get_u32(
2153                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2154                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2155         }
2156
2157         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2158                 coverage_class = nla_get_u8(
2159                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2160                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2161         }
2162
2163         if (changed) {
2164                 u8 old_retry_short, old_retry_long;
2165                 u32 old_frag_threshold, old_rts_threshold;
2166                 u8 old_coverage_class;
2167
2168                 if (!rdev->ops->set_wiphy_params)
2169                         return -EOPNOTSUPP;
2170
2171                 old_retry_short = rdev->wiphy.retry_short;
2172                 old_retry_long = rdev->wiphy.retry_long;
2173                 old_frag_threshold = rdev->wiphy.frag_threshold;
2174                 old_rts_threshold = rdev->wiphy.rts_threshold;
2175                 old_coverage_class = rdev->wiphy.coverage_class;
2176
2177                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2178                         rdev->wiphy.retry_short = retry_short;
2179                 if (changed & WIPHY_PARAM_RETRY_LONG)
2180                         rdev->wiphy.retry_long = retry_long;
2181                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2182                         rdev->wiphy.frag_threshold = frag_threshold;
2183                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2184                         rdev->wiphy.rts_threshold = rts_threshold;
2185                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2186                         rdev->wiphy.coverage_class = coverage_class;
2187
2188                 result = rdev_set_wiphy_params(rdev, changed);
2189                 if (result) {
2190                         rdev->wiphy.retry_short = old_retry_short;
2191                         rdev->wiphy.retry_long = old_retry_long;
2192                         rdev->wiphy.frag_threshold = old_frag_threshold;
2193                         rdev->wiphy.rts_threshold = old_rts_threshold;
2194                         rdev->wiphy.coverage_class = old_coverage_class;
2195                 }
2196         }
2197         return 0;
2198 }
2199
2200 static inline u64 wdev_id(struct wireless_dev *wdev)
2201 {
2202         return (u64)wdev->identifier |
2203                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2204 }
2205
2206 static int nl80211_send_chandef(struct sk_buff *msg,
2207                                 const struct cfg80211_chan_def *chandef)
2208 {
2209         WARN_ON(!cfg80211_chandef_valid(chandef));
2210
2211         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2212                         chandef->chan->center_freq))
2213                 return -ENOBUFS;
2214         switch (chandef->width) {
2215         case NL80211_CHAN_WIDTH_20_NOHT:
2216         case NL80211_CHAN_WIDTH_20:
2217         case NL80211_CHAN_WIDTH_40:
2218                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2219                                 cfg80211_get_chandef_type(chandef)))
2220                         return -ENOBUFS;
2221                 break;
2222         default:
2223                 break;
2224         }
2225         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2226                 return -ENOBUFS;
2227         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2228                 return -ENOBUFS;
2229         if (chandef->center_freq2 &&
2230             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2231                 return -ENOBUFS;
2232         return 0;
2233 }
2234
2235 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2236                               struct cfg80211_registered_device *rdev,
2237                               struct wireless_dev *wdev)
2238 {
2239         struct net_device *dev = wdev->netdev;
2240         void *hdr;
2241
2242         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2243         if (!hdr)
2244                 return -1;
2245
2246         if (dev &&
2247             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2248              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2249                 goto nla_put_failure;
2250
2251         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2252             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2253             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2254             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2255             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2256                         rdev->devlist_generation ^
2257                         (cfg80211_rdev_list_generation << 2)))
2258                 goto nla_put_failure;
2259
2260         if (rdev->ops->get_channel) {
2261                 int ret;
2262                 struct cfg80211_chan_def chandef;
2263
2264                 ret = rdev_get_channel(rdev, wdev, &chandef);
2265                 if (ret == 0) {
2266                         if (nl80211_send_chandef(msg, &chandef))
2267                                 goto nla_put_failure;
2268                 }
2269         }
2270
2271         if (wdev->ssid_len) {
2272                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2273                         goto nla_put_failure;
2274         }
2275
2276         return genlmsg_end(msg, hdr);
2277
2278  nla_put_failure:
2279         genlmsg_cancel(msg, hdr);
2280         return -EMSGSIZE;
2281 }
2282
2283 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2284 {
2285         int wp_idx = 0;
2286         int if_idx = 0;
2287         int wp_start = cb->args[0];
2288         int if_start = cb->args[1];
2289         struct cfg80211_registered_device *rdev;
2290         struct wireless_dev *wdev;
2291
2292         rtnl_lock();
2293         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2294                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2295                         continue;
2296                 if (wp_idx < wp_start) {
2297                         wp_idx++;
2298                         continue;
2299                 }
2300                 if_idx = 0;
2301
2302                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2303                         if (if_idx < if_start) {
2304                                 if_idx++;
2305                                 continue;
2306                         }
2307                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2308                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2309                                                rdev, wdev) < 0) {
2310                                 goto out;
2311                         }
2312                         if_idx++;
2313                 }
2314
2315                 wp_idx++;
2316         }
2317  out:
2318         rtnl_unlock();
2319
2320         cb->args[0] = wp_idx;
2321         cb->args[1] = if_idx;
2322
2323         return skb->len;
2324 }
2325
2326 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2327 {
2328         struct sk_buff *msg;
2329         struct cfg80211_registered_device *dev = info->user_ptr[0];
2330         struct wireless_dev *wdev = info->user_ptr[1];
2331
2332         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2333         if (!msg)
2334                 return -ENOMEM;
2335
2336         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2337                                dev, wdev) < 0) {
2338                 nlmsg_free(msg);
2339                 return -ENOBUFS;
2340         }
2341
2342         return genlmsg_reply(msg, info);
2343 }
2344
2345 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2346         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2347         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2348         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2349         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2350         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2351         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2352 };
2353
2354 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2355 {
2356         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2357         int flag;
2358
2359         *mntrflags = 0;
2360
2361         if (!nla)
2362                 return -EINVAL;
2363
2364         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2365                              nla, mntr_flags_policy))
2366                 return -EINVAL;
2367
2368         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2369                 if (flags[flag])
2370                         *mntrflags |= (1<<flag);
2371
2372         return 0;
2373 }
2374
2375 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2376                                struct net_device *netdev, u8 use_4addr,
2377                                enum nl80211_iftype iftype)
2378 {
2379         if (!use_4addr) {
2380                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2381                         return -EBUSY;
2382                 return 0;
2383         }
2384
2385         switch (iftype) {
2386         case NL80211_IFTYPE_AP_VLAN:
2387                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2388                         return 0;
2389                 break;
2390         case NL80211_IFTYPE_STATION:
2391                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2392                         return 0;
2393                 break;
2394         default:
2395                 break;
2396         }
2397
2398         return -EOPNOTSUPP;
2399 }
2400
2401 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2402 {
2403         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2404         struct vif_params params;
2405         int err;
2406         enum nl80211_iftype otype, ntype;
2407         struct net_device *dev = info->user_ptr[1];
2408         u32 _flags, *flags = NULL;
2409         bool change = false;
2410
2411         memset(&params, 0, sizeof(params));
2412
2413         otype = ntype = dev->ieee80211_ptr->iftype;
2414
2415         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2416                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2417                 if (otype != ntype)
2418                         change = true;
2419                 if (ntype > NL80211_IFTYPE_MAX)
2420                         return -EINVAL;
2421         }
2422
2423         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2424                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2425
2426                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2427                         return -EINVAL;
2428                 if (netif_running(dev))
2429                         return -EBUSY;
2430
2431                 wdev_lock(wdev);
2432                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2433                              IEEE80211_MAX_MESH_ID_LEN);
2434                 wdev->mesh_id_up_len =
2435                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2436                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2437                        wdev->mesh_id_up_len);
2438                 wdev_unlock(wdev);
2439         }
2440
2441         if (info->attrs[NL80211_ATTR_4ADDR]) {
2442                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2443                 change = true;
2444                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2445                 if (err)
2446                         return err;
2447         } else {
2448                 params.use_4addr = -1;
2449         }
2450
2451         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2452                 if (ntype != NL80211_IFTYPE_MONITOR)
2453                         return -EINVAL;
2454                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2455                                           &_flags);
2456                 if (err)
2457                         return err;
2458
2459                 flags = &_flags;
2460                 change = true;
2461         }
2462
2463         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2464             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2465                 return -EOPNOTSUPP;
2466
2467         if (change)
2468                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2469         else
2470                 err = 0;
2471
2472         if (!err && params.use_4addr != -1)
2473                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2474
2475         return err;
2476 }
2477
2478 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2479 {
2480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2481         struct vif_params params;
2482         struct wireless_dev *wdev;
2483         struct sk_buff *msg;
2484         int err;
2485         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2486         u32 flags;
2487
2488         memset(&params, 0, sizeof(params));
2489
2490         if (!info->attrs[NL80211_ATTR_IFNAME])
2491                 return -EINVAL;
2492
2493         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2494                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2495                 if (type > NL80211_IFTYPE_MAX)
2496                         return -EINVAL;
2497         }
2498
2499         if (!rdev->ops->add_virtual_intf ||
2500             !(rdev->wiphy.interface_modes & (1 << type)))
2501                 return -EOPNOTSUPP;
2502
2503         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2504                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2505                            ETH_ALEN);
2506                 if (!is_valid_ether_addr(params.macaddr))
2507                         return -EADDRNOTAVAIL;
2508         }
2509
2510         if (info->attrs[NL80211_ATTR_4ADDR]) {
2511                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2512                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2513                 if (err)
2514                         return err;
2515         }
2516
2517         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2518         if (!msg)
2519                 return -ENOMEM;
2520
2521         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2522                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2523                                   &flags);
2524
2525         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2526             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2527                 return -EOPNOTSUPP;
2528
2529         wdev = rdev_add_virtual_intf(rdev,
2530                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2531                                 type, err ? NULL : &flags, &params);
2532         if (IS_ERR(wdev)) {
2533                 nlmsg_free(msg);
2534                 return PTR_ERR(wdev);
2535         }
2536
2537         switch (type) {
2538         case NL80211_IFTYPE_MESH_POINT:
2539                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2540                         break;
2541                 wdev_lock(wdev);
2542                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2543                              IEEE80211_MAX_MESH_ID_LEN);
2544                 wdev->mesh_id_up_len =
2545                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2546                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2547                        wdev->mesh_id_up_len);
2548                 wdev_unlock(wdev);
2549                 break;
2550         case NL80211_IFTYPE_P2P_DEVICE:
2551                 /*
2552                  * P2P Device doesn't have a netdev, so doesn't go
2553                  * through the netdev notifier and must be added here
2554                  */
2555                 mutex_init(&wdev->mtx);
2556                 INIT_LIST_HEAD(&wdev->event_list);
2557                 spin_lock_init(&wdev->event_lock);
2558                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2559                 spin_lock_init(&wdev->mgmt_registrations_lock);
2560
2561                 wdev->identifier = ++rdev->wdev_id;
2562                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2563                 rdev->devlist_generation++;
2564                 break;
2565         default:
2566                 break;
2567         }
2568
2569         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2570                                rdev, wdev) < 0) {
2571                 nlmsg_free(msg);
2572                 return -ENOBUFS;
2573         }
2574
2575         return genlmsg_reply(msg, info);
2576 }
2577
2578 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2579 {
2580         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2581         struct wireless_dev *wdev = info->user_ptr[1];
2582
2583         if (!rdev->ops->del_virtual_intf)
2584                 return -EOPNOTSUPP;
2585
2586         /*
2587          * If we remove a wireless device without a netdev then clear
2588          * user_ptr[1] so that nl80211_post_doit won't dereference it
2589          * to check if it needs to do dev_put(). Otherwise it crashes
2590          * since the wdev has been freed, unlike with a netdev where
2591          * we need the dev_put() for the netdev to really be freed.
2592          */
2593         if (!wdev->netdev)
2594                 info->user_ptr[1] = NULL;
2595
2596         return rdev_del_virtual_intf(rdev, wdev);
2597 }
2598
2599 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2600 {
2601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2602         struct net_device *dev = info->user_ptr[1];
2603         u16 noack_map;
2604
2605         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2606                 return -EINVAL;
2607
2608         if (!rdev->ops->set_noack_map)
2609                 return -EOPNOTSUPP;
2610
2611         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2612
2613         return rdev_set_noack_map(rdev, dev, noack_map);
2614 }
2615
2616 struct get_key_cookie {
2617         struct sk_buff *msg;
2618         int error;
2619         int idx;
2620 };
2621
2622 static void get_key_callback(void *c, struct key_params *params)
2623 {
2624         struct nlattr *key;
2625         struct get_key_cookie *cookie = c;
2626
2627         if ((params->key &&
2628              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2629                      params->key_len, params->key)) ||
2630             (params->seq &&
2631              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2632                      params->seq_len, params->seq)) ||
2633             (params->cipher &&
2634              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2635                          params->cipher)))
2636                 goto nla_put_failure;
2637
2638         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2639         if (!key)
2640                 goto nla_put_failure;
2641
2642         if ((params->key &&
2643              nla_put(cookie->msg, NL80211_KEY_DATA,
2644                      params->key_len, params->key)) ||
2645             (params->seq &&
2646              nla_put(cookie->msg, NL80211_KEY_SEQ,
2647                      params->seq_len, params->seq)) ||
2648             (params->cipher &&
2649              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2650                          params->cipher)))
2651                 goto nla_put_failure;
2652
2653         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2654                 goto nla_put_failure;
2655
2656         nla_nest_end(cookie->msg, key);
2657
2658         return;
2659  nla_put_failure:
2660         cookie->error = 1;
2661 }
2662
2663 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2664 {
2665         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2666         int err;
2667         struct net_device *dev = info->user_ptr[1];
2668         u8 key_idx = 0;
2669         const u8 *mac_addr = NULL;
2670         bool pairwise;
2671         struct get_key_cookie cookie = {
2672                 .error = 0,
2673         };
2674         void *hdr;
2675         struct sk_buff *msg;
2676
2677         if (info->attrs[NL80211_ATTR_KEY_IDX])
2678                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2679
2680         if (key_idx > 5)
2681                 return -EINVAL;
2682
2683         if (info->attrs[NL80211_ATTR_MAC])
2684                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2685
2686         pairwise = !!mac_addr;
2687         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2688                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2689                 if (kt >= NUM_NL80211_KEYTYPES)
2690                         return -EINVAL;
2691                 if (kt != NL80211_KEYTYPE_GROUP &&
2692                     kt != NL80211_KEYTYPE_PAIRWISE)
2693                         return -EINVAL;
2694                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2695         }
2696
2697         if (!rdev->ops->get_key)
2698                 return -EOPNOTSUPP;
2699
2700         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2701         if (!msg)
2702                 return -ENOMEM;
2703
2704         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2705                              NL80211_CMD_NEW_KEY);
2706         if (!hdr)
2707                 goto nla_put_failure;
2708
2709         cookie.msg = msg;
2710         cookie.idx = key_idx;
2711
2712         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2713             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2714                 goto nla_put_failure;
2715         if (mac_addr &&
2716             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2717                 goto nla_put_failure;
2718
2719         if (pairwise && mac_addr &&
2720             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2721                 return -ENOENT;
2722
2723         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2724                            get_key_callback);
2725
2726         if (err)
2727                 goto free_msg;
2728
2729         if (cookie.error)
2730                 goto nla_put_failure;
2731
2732         genlmsg_end(msg, hdr);
2733         return genlmsg_reply(msg, info);
2734
2735  nla_put_failure:
2736         err = -ENOBUFS;
2737  free_msg:
2738         nlmsg_free(msg);
2739         return err;
2740 }
2741
2742 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2743 {
2744         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2745         struct key_parse key;
2746         int err;
2747         struct net_device *dev = info->user_ptr[1];
2748
2749         err = nl80211_parse_key(info, &key);
2750         if (err)
2751                 return err;
2752
2753         if (key.idx < 0)
2754                 return -EINVAL;
2755
2756         /* only support setting default key */
2757         if (!key.def && !key.defmgmt)
2758                 return -EINVAL;
2759
2760         wdev_lock(dev->ieee80211_ptr);
2761
2762         if (key.def) {
2763                 if (!rdev->ops->set_default_key) {
2764                         err = -EOPNOTSUPP;
2765                         goto out;
2766                 }
2767
2768                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2769                 if (err)
2770                         goto out;
2771
2772                 err = rdev_set_default_key(rdev, dev, key.idx,
2773                                                  key.def_uni, key.def_multi);
2774
2775                 if (err)
2776                         goto out;
2777
2778 #ifdef CONFIG_CFG80211_WEXT
2779                 dev->ieee80211_ptr->wext.default_key = key.idx;
2780 #endif
2781         } else {
2782                 if (key.def_uni || !key.def_multi) {
2783                         err = -EINVAL;
2784                         goto out;
2785                 }
2786
2787                 if (!rdev->ops->set_default_mgmt_key) {
2788                         err = -EOPNOTSUPP;
2789                         goto out;
2790                 }
2791
2792                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2793                 if (err)
2794                         goto out;
2795
2796                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2797                 if (err)
2798                         goto out;
2799
2800 #ifdef CONFIG_CFG80211_WEXT
2801                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2802 #endif
2803         }
2804
2805  out:
2806         wdev_unlock(dev->ieee80211_ptr);
2807
2808         return err;
2809 }
2810
2811 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2812 {
2813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2814         int err;
2815         struct net_device *dev = info->user_ptr[1];
2816         struct key_parse key;
2817         const u8 *mac_addr = NULL;
2818
2819         err = nl80211_parse_key(info, &key);
2820         if (err)
2821                 return err;
2822
2823         if (!key.p.key)
2824                 return -EINVAL;
2825
2826         if (info->attrs[NL80211_ATTR_MAC])
2827                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2828
2829         if (key.type == -1) {
2830                 if (mac_addr)
2831                         key.type = NL80211_KEYTYPE_PAIRWISE;
2832                 else
2833                         key.type = NL80211_KEYTYPE_GROUP;
2834         }
2835
2836         /* for now */
2837         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2838             key.type != NL80211_KEYTYPE_GROUP)
2839                 return -EINVAL;
2840
2841         if (!rdev->ops->add_key)
2842                 return -EOPNOTSUPP;
2843
2844         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2845                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2846                                            mac_addr))
2847                 return -EINVAL;
2848
2849         wdev_lock(dev->ieee80211_ptr);
2850         err = nl80211_key_allowed(dev->ieee80211_ptr);
2851         if (!err)
2852                 err = rdev_add_key(rdev, dev, key.idx,
2853                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2854                                     mac_addr, &key.p);
2855         wdev_unlock(dev->ieee80211_ptr);
2856
2857         return err;
2858 }
2859
2860 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2861 {
2862         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2863         int err;
2864         struct net_device *dev = info->user_ptr[1];
2865         u8 *mac_addr = NULL;
2866         struct key_parse key;
2867
2868         err = nl80211_parse_key(info, &key);
2869         if (err)
2870                 return err;
2871
2872         if (info->attrs[NL80211_ATTR_MAC])
2873                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2874
2875         if (key.type == -1) {
2876                 if (mac_addr)
2877                         key.type = NL80211_KEYTYPE_PAIRWISE;
2878                 else
2879                         key.type = NL80211_KEYTYPE_GROUP;
2880         }
2881
2882         /* for now */
2883         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2884             key.type != NL80211_KEYTYPE_GROUP)
2885                 return -EINVAL;
2886
2887         if (!rdev->ops->del_key)
2888                 return -EOPNOTSUPP;
2889
2890         wdev_lock(dev->ieee80211_ptr);
2891         err = nl80211_key_allowed(dev->ieee80211_ptr);
2892
2893         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2894             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2895                 err = -ENOENT;
2896
2897         if (!err)
2898                 err = rdev_del_key(rdev, dev, key.idx,
2899                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2900                                    mac_addr);
2901
2902 #ifdef CONFIG_CFG80211_WEXT
2903         if (!err) {
2904                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2905                         dev->ieee80211_ptr->wext.default_key = -1;
2906                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2907                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2908         }
2909 #endif
2910         wdev_unlock(dev->ieee80211_ptr);
2911
2912         return err;
2913 }
2914
2915 /* This function returns an error or the number of nested attributes */
2916 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2917 {
2918         struct nlattr *attr;
2919         int n_entries = 0, tmp;
2920
2921         nla_for_each_nested(attr, nl_attr, tmp) {
2922                 if (nla_len(attr) != ETH_ALEN)
2923                         return -EINVAL;
2924
2925                 n_entries++;
2926         }
2927
2928         return n_entries;
2929 }
2930
2931 /*
2932  * This function parses ACL information and allocates memory for ACL data.
2933  * On successful return, the calling function is responsible to free the
2934  * ACL buffer returned by this function.
2935  */
2936 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2937                                                 struct genl_info *info)
2938 {
2939         enum nl80211_acl_policy acl_policy;
2940         struct nlattr *attr;
2941         struct cfg80211_acl_data *acl;
2942         int i = 0, n_entries, tmp;
2943
2944         if (!wiphy->max_acl_mac_addrs)
2945                 return ERR_PTR(-EOPNOTSUPP);
2946
2947         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2948                 return ERR_PTR(-EINVAL);
2949
2950         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2951         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2952             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2953                 return ERR_PTR(-EINVAL);
2954
2955         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2956                 return ERR_PTR(-EINVAL);
2957
2958         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2959         if (n_entries < 0)
2960                 return ERR_PTR(n_entries);
2961
2962         if (n_entries > wiphy->max_acl_mac_addrs)
2963                 return ERR_PTR(-ENOTSUPP);
2964
2965         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2966                       GFP_KERNEL);
2967         if (!acl)
2968                 return ERR_PTR(-ENOMEM);
2969
2970         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2971                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2972                 i++;
2973         }
2974
2975         acl->n_acl_entries = n_entries;
2976         acl->acl_policy = acl_policy;
2977
2978         return acl;
2979 }
2980
2981 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2982 {
2983         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2984         struct net_device *dev = info->user_ptr[1];
2985         struct cfg80211_acl_data *acl;
2986         int err;
2987
2988         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2989             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2990                 return -EOPNOTSUPP;
2991
2992         if (!dev->ieee80211_ptr->beacon_interval)
2993                 return -EINVAL;
2994
2995         acl = parse_acl_data(&rdev->wiphy, info);
2996         if (IS_ERR(acl))
2997                 return PTR_ERR(acl);
2998
2999         err = rdev_set_mac_acl(rdev, dev, acl);
3000
3001         kfree(acl);
3002
3003         return err;
3004 }
3005
3006 static int nl80211_parse_beacon(struct nlattr *attrs[],
3007                                 struct cfg80211_beacon_data *bcn)
3008 {
3009         bool haveinfo = false;
3010
3011         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3012             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3013             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3014             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3015                 return -EINVAL;
3016
3017         memset(bcn, 0, sizeof(*bcn));
3018
3019         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3020                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3021                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3022                 if (!bcn->head_len)
3023                         return -EINVAL;
3024                 haveinfo = true;
3025         }
3026
3027         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3028                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3029                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3030                 haveinfo = true;
3031         }
3032
3033         if (!haveinfo)
3034                 return -EINVAL;
3035
3036         if (attrs[NL80211_ATTR_IE]) {
3037                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3038                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3039         }
3040
3041         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3042                 bcn->proberesp_ies =
3043                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3044                 bcn->proberesp_ies_len =
3045                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3046         }
3047
3048         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3049                 bcn->assocresp_ies =
3050                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3051                 bcn->assocresp_ies_len =
3052                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3053         }
3054
3055         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3056                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3057                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3058         }
3059
3060         return 0;
3061 }
3062
3063 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3064                                    struct cfg80211_ap_settings *params)
3065 {
3066         struct wireless_dev *wdev;
3067         bool ret = false;
3068
3069         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3070                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3071                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3072                         continue;
3073
3074                 if (!wdev->preset_chandef.chan)
3075                         continue;
3076
3077                 params->chandef = wdev->preset_chandef;
3078                 ret = true;
3079                 break;
3080         }
3081
3082         return ret;
3083 }
3084
3085 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3086                                     enum nl80211_auth_type auth_type,
3087                                     enum nl80211_commands cmd)
3088 {
3089         if (auth_type > NL80211_AUTHTYPE_MAX)
3090                 return false;
3091
3092         switch (cmd) {
3093         case NL80211_CMD_AUTHENTICATE:
3094                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3095                     auth_type == NL80211_AUTHTYPE_SAE)
3096                         return false;
3097                 return true;
3098         case NL80211_CMD_CONNECT:
3099         case NL80211_CMD_START_AP:
3100                 /* SAE not supported yet */
3101                 if (auth_type == NL80211_AUTHTYPE_SAE)
3102                         return false;
3103                 return true;
3104         default:
3105                 return false;
3106         }
3107 }
3108
3109 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3110 {
3111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3112         struct net_device *dev = info->user_ptr[1];
3113         struct wireless_dev *wdev = dev->ieee80211_ptr;
3114         struct cfg80211_ap_settings params;
3115         int err;
3116         u8 radar_detect_width = 0;
3117
3118         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3119             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3120                 return -EOPNOTSUPP;
3121
3122         if (!rdev->ops->start_ap)
3123                 return -EOPNOTSUPP;
3124
3125         if (wdev->beacon_interval)
3126                 return -EALREADY;
3127
3128         memset(&params, 0, sizeof(params));
3129
3130         /* these are required for START_AP */
3131         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3132             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3133             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3134                 return -EINVAL;
3135
3136         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3137         if (err)
3138                 return err;
3139
3140         params.beacon_interval =
3141                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3142         params.dtim_period =
3143                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3144
3145         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3146         if (err)
3147                 return err;
3148
3149         /*
3150          * In theory, some of these attributes should be required here
3151          * but since they were not used when the command was originally
3152          * added, keep them optional for old user space programs to let
3153          * them continue to work with drivers that do not need the
3154          * additional information -- drivers must check!
3155          */
3156         if (info->attrs[NL80211_ATTR_SSID]) {
3157                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3158                 params.ssid_len =
3159                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3160                 if (params.ssid_len == 0 ||
3161                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3162                         return -EINVAL;
3163         }
3164
3165         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3166                 params.hidden_ssid = nla_get_u32(
3167                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3168                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3169                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3170                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3171                         return -EINVAL;
3172         }
3173
3174         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3175
3176         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3177                 params.auth_type = nla_get_u32(
3178                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3179                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3180                                              NL80211_CMD_START_AP))
3181                         return -EINVAL;
3182         } else
3183                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3184
3185         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3186                                       NL80211_MAX_NR_CIPHER_SUITES);
3187         if (err)
3188                 return err;
3189
3190         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3191                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3192                         return -EOPNOTSUPP;
3193                 params.inactivity_timeout = nla_get_u16(
3194                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3195         }
3196
3197         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3198                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3199                         return -EINVAL;
3200                 params.p2p_ctwindow =
3201                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3202                 if (params.p2p_ctwindow > 127)
3203                         return -EINVAL;
3204                 if (params.p2p_ctwindow != 0 &&
3205                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3206                         return -EINVAL;
3207         }
3208
3209         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3210                 u8 tmp;
3211
3212                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3213                         return -EINVAL;
3214                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3215                 if (tmp > 1)
3216                         return -EINVAL;
3217                 params.p2p_opp_ps = tmp;
3218                 if (params.p2p_opp_ps != 0 &&
3219                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3220                         return -EINVAL;
3221         }
3222
3223         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3224                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3225                 if (err)
3226                         return err;
3227         } else if (wdev->preset_chandef.chan) {
3228                 params.chandef = wdev->preset_chandef;
3229         } else if (!nl80211_get_ap_channel(rdev, &params))
3230                 return -EINVAL;
3231
3232         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3233                 return -EINVAL;
3234
3235         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3236         if (err < 0)
3237                 return err;
3238         if (err) {
3239                 radar_detect_width = BIT(params.chandef.width);
3240                 params.radar_required = true;
3241         }
3242
3243         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3244                                            params.chandef.chan,
3245                                            CHAN_MODE_SHARED,
3246                                            radar_detect_width);
3247         if (err)
3248                 return err;
3249
3250         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3251                 params.acl = parse_acl_data(&rdev->wiphy, info);
3252                 if (IS_ERR(params.acl))
3253                         return PTR_ERR(params.acl);
3254         }
3255
3256         wdev_lock(wdev);
3257         err = rdev_start_ap(rdev, dev, &params);
3258         if (!err) {
3259                 wdev->preset_chandef = params.chandef;
3260                 wdev->beacon_interval = params.beacon_interval;
3261                 wdev->channel = params.chandef.chan;
3262                 wdev->ssid_len = params.ssid_len;
3263                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3264         }
3265         wdev_unlock(wdev);
3266
3267         kfree(params.acl);
3268
3269         return err;
3270 }
3271
3272 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3273 {
3274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3275         struct net_device *dev = info->user_ptr[1];
3276         struct wireless_dev *wdev = dev->ieee80211_ptr;
3277         struct cfg80211_beacon_data params;
3278         int err;
3279
3280         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3281             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3282                 return -EOPNOTSUPP;
3283
3284         if (!rdev->ops->change_beacon)
3285                 return -EOPNOTSUPP;
3286
3287         if (!wdev->beacon_interval)
3288                 return -EINVAL;
3289
3290         err = nl80211_parse_beacon(info->attrs, &params);
3291         if (err)
3292                 return err;
3293
3294         wdev_lock(wdev);
3295         err = rdev_change_beacon(rdev, dev, &params);
3296         wdev_unlock(wdev);
3297
3298         return err;
3299 }
3300
3301 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3302 {
3303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3304         struct net_device *dev = info->user_ptr[1];
3305
3306         return cfg80211_stop_ap(rdev, dev);
3307 }
3308
3309 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3310         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3311         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3312         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3313         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3314         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3315         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3316 };
3317
3318 static int parse_station_flags(struct genl_info *info,
3319                                enum nl80211_iftype iftype,
3320                                struct station_parameters *params)
3321 {
3322         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3323         struct nlattr *nla;
3324         int flag;
3325
3326         /*
3327          * Try parsing the new attribute first so userspace
3328          * can specify both for older kernels.
3329          */
3330         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3331         if (nla) {
3332                 struct nl80211_sta_flag_update *sta_flags;
3333
3334                 sta_flags = nla_data(nla);
3335                 params->sta_flags_mask = sta_flags->mask;
3336                 params->sta_flags_set = sta_flags->set;
3337                 params->sta_flags_set &= params->sta_flags_mask;
3338                 if ((params->sta_flags_mask |
3339                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3340                         return -EINVAL;
3341                 return 0;
3342         }
3343
3344         /* if present, parse the old attribute */
3345
3346         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3347         if (!nla)
3348                 return 0;
3349
3350         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3351                              nla, sta_flags_policy))
3352                 return -EINVAL;
3353
3354         /*
3355          * Only allow certain flags for interface types so that
3356          * other attributes are silently ignored. Remember that
3357          * this is backward compatibility code with old userspace
3358          * and shouldn't be hit in other cases anyway.
3359          */
3360         switch (iftype) {
3361         case NL80211_IFTYPE_AP:
3362         case NL80211_IFTYPE_AP_VLAN:
3363         case NL80211_IFTYPE_P2P_GO:
3364                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3365                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3366                                          BIT(NL80211_STA_FLAG_WME) |
3367                                          BIT(NL80211_STA_FLAG_MFP);
3368                 break;
3369         case NL80211_IFTYPE_P2P_CLIENT:
3370         case NL80211_IFTYPE_STATION:
3371                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3372                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3373                 break;
3374         case NL80211_IFTYPE_MESH_POINT:
3375                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3376                                          BIT(NL80211_STA_FLAG_MFP) |
3377                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3378         default:
3379                 return -EINVAL;
3380         }
3381
3382         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3383                 if (flags[flag]) {
3384                         params->sta_flags_set |= (1<<flag);
3385
3386                         /* no longer support new API additions in old API */
3387                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3388                                 return -EINVAL;
3389                 }
3390         }
3391
3392         return 0;
3393 }
3394
3395 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3396                                  int attr)
3397 {
3398         struct nlattr *rate;
3399         u32 bitrate;
3400         u16 bitrate_compat;
3401
3402         rate = nla_nest_start(msg, attr);
3403         if (!rate)
3404                 return false;
3405
3406         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3407         bitrate = cfg80211_calculate_bitrate(info);
3408         /* report 16-bit bitrate only if we can */
3409         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3410         if (bitrate > 0 &&
3411             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3412                 return false;
3413         if (bitrate_compat > 0 &&
3414             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3415                 return false;
3416
3417         if (info->flags & RATE_INFO_FLAGS_MCS) {
3418                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3419                         return false;
3420                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3421                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3422                         return false;
3423                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3424                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3425                         return false;
3426         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3427                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3428                         return false;
3429                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3430                         return false;
3431                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3432                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3433                         return false;
3434                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3435                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3436                         return false;
3437                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3438                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3439                         return false;
3440                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3441                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3442                         return false;
3443                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3444                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3445                         return false;
3446         }
3447
3448         nla_nest_end(msg, rate);
3449         return true;
3450 }
3451
3452 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3453                                int id)
3454 {
3455         void *attr;
3456         int i = 0;
3457
3458         if (!mask)
3459                 return true;
3460
3461         attr = nla_nest_start(msg, id);
3462         if (!attr)
3463                 return false;
3464
3465         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3466                 if (!(mask & BIT(i)))
3467                         continue;
3468
3469                 if (nla_put_u8(msg, i, signal[i]))
3470                         return false;
3471         }
3472
3473         nla_nest_end(msg, attr);
3474
3475         return true;
3476 }
3477
3478 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3479                                 int flags,
3480                                 struct cfg80211_registered_device *rdev,
3481                                 struct net_device *dev,
3482                                 const u8 *mac_addr, struct station_info *sinfo)
3483 {
3484         void *hdr;
3485         struct nlattr *sinfoattr, *bss_param;
3486
3487         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3488         if (!hdr)
3489                 return -1;
3490
3491         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3492             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3493             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3494                 goto nla_put_failure;
3495
3496         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3497         if (!sinfoattr)
3498                 goto nla_put_failure;
3499         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3500             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3501                         sinfo->connected_time))
3502                 goto nla_put_failure;
3503         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3504             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3505                         sinfo->inactive_time))
3506                 goto nla_put_failure;
3507         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3508                               STATION_INFO_RX_BYTES64)) &&
3509             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3510                         (u32)sinfo->rx_bytes))
3511                 goto nla_put_failure;
3512         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3513                               STATION_INFO_TX_BYTES64)) &&
3514             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3515                         (u32)sinfo->tx_bytes))
3516                 goto nla_put_failure;
3517         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3518             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3519                         sinfo->rx_bytes))
3520                 goto nla_put_failure;
3521         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3522             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3523                         sinfo->tx_bytes))
3524                 goto nla_put_failure;
3525         if ((sinfo->filled & STATION_INFO_LLID) &&
3526             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3527                 goto nla_put_failure;
3528         if ((sinfo->filled & STATION_INFO_PLID) &&
3529             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3530                 goto nla_put_failure;
3531         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3532             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3533                        sinfo->plink_state))
3534                 goto nla_put_failure;
3535         switch (rdev->wiphy.signal_type) {
3536         case CFG80211_SIGNAL_TYPE_MBM:
3537                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3538                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3539                                sinfo->signal))
3540                         goto nla_put_failure;
3541                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3542                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3543                                sinfo->signal_avg))
3544                         goto nla_put_failure;
3545                 break;
3546         default:
3547                 break;
3548         }
3549         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3550                 if (!nl80211_put_signal(msg, sinfo->chains,
3551                                         sinfo->chain_signal,
3552                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3553                         goto nla_put_failure;
3554         }
3555         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3556                 if (!nl80211_put_signal(msg, sinfo->chains,
3557                                         sinfo->chain_signal_avg,
3558                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3559                         goto nla_put_failure;
3560         }
3561         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3562                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3563                                           NL80211_STA_INFO_TX_BITRATE))
3564                         goto nla_put_failure;
3565         }
3566         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3567                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3568                                           NL80211_STA_INFO_RX_BITRATE))
3569                         goto nla_put_failure;
3570         }
3571         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3572             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3573                         sinfo->rx_packets))
3574                 goto nla_put_failure;
3575         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3576             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3577                         sinfo->tx_packets))
3578                 goto nla_put_failure;
3579         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3580             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3581                         sinfo->tx_retries))
3582                 goto nla_put_failure;
3583         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3584             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3585                         sinfo->tx_failed))
3586                 goto nla_put_failure;
3587         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3588             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3589                         sinfo->beacon_loss_count))
3590                 goto nla_put_failure;
3591         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3592             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3593                         sinfo->local_pm))
3594                 goto nla_put_failure;
3595         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3596             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3597                         sinfo->peer_pm))
3598                 goto nla_put_failure;
3599         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3600             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3601                         sinfo->nonpeer_pm))
3602                 goto nla_put_failure;
3603         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3604                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3605                 if (!bss_param)
3606                         goto nla_put_failure;
3607
3608                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3609                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3610                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3611                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3612                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3613                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3614                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3615                                sinfo->bss_param.dtim_period) ||
3616                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3617                                 sinfo->bss_param.beacon_interval))
3618                         goto nla_put_failure;
3619
3620                 nla_nest_end(msg, bss_param);
3621         }
3622         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3623             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3624                     sizeof(struct nl80211_sta_flag_update),
3625                     &sinfo->sta_flags))
3626                 goto nla_put_failure;
3627         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3628                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3629                             sinfo->t_offset))
3630                 goto nla_put_failure;
3631         nla_nest_end(msg, sinfoattr);
3632
3633         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3634             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3635                     sinfo->assoc_req_ies))
3636                 goto nla_put_failure;
3637
3638         return genlmsg_end(msg, hdr);
3639
3640  nla_put_failure:
3641         genlmsg_cancel(msg, hdr);
3642         return -EMSGSIZE;
3643 }
3644
3645 static int nl80211_dump_station(struct sk_buff *skb,
3646                                 struct netlink_callback *cb)
3647 {
3648         struct station_info sinfo;
3649         struct cfg80211_registered_device *dev;
3650         struct wireless_dev *wdev;
3651         u8 mac_addr[ETH_ALEN];
3652         int sta_idx = cb->args[2];
3653         int err;
3654
3655         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3656         if (err)
3657                 return err;
3658
3659         if (!wdev->netdev) {
3660                 err = -EINVAL;
3661                 goto out_err;
3662         }
3663
3664         if (!dev->ops->dump_station) {
3665                 err = -EOPNOTSUPP;
3666                 goto out_err;
3667         }
3668
3669         while (1) {
3670                 memset(&sinfo, 0, sizeof(sinfo));
3671                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3672                                         mac_addr, &sinfo);
3673                 if (err == -ENOENT)
3674                         break;
3675                 if (err)
3676                         goto out_err;
3677
3678                 if (nl80211_send_station(skb,
3679                                 NETLINK_CB(cb->skb).portid,
3680                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3681                                 dev, wdev->netdev, mac_addr,
3682                                 &sinfo) < 0)
3683                         goto out;
3684
3685                 sta_idx++;
3686         }
3687
3688
3689  out:
3690         cb->args[2] = sta_idx;
3691         err = skb->len;
3692  out_err:
3693         nl80211_finish_wdev_dump(dev);
3694
3695         return err;
3696 }
3697
3698 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3699 {
3700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3701         struct net_device *dev = info->user_ptr[1];
3702         struct station_info sinfo;
3703         struct sk_buff *msg;
3704         u8 *mac_addr = NULL;
3705         int err;
3706
3707         memset(&sinfo, 0, sizeof(sinfo));
3708
3709         if (!info->attrs[NL80211_ATTR_MAC])
3710                 return -EINVAL;
3711
3712         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3713
3714         if (!rdev->ops->get_station)
3715                 return -EOPNOTSUPP;
3716
3717         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3718         if (err)
3719                 return err;
3720
3721         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3722         if (!msg)
3723                 return -ENOMEM;
3724
3725         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3726                                  rdev, dev, mac_addr, &sinfo) < 0) {
3727                 nlmsg_free(msg);
3728                 return -ENOBUFS;
3729         }
3730
3731         return genlmsg_reply(msg, info);
3732 }
3733
3734 int cfg80211_check_station_change(struct wiphy *wiphy,
3735                                   struct station_parameters *params,
3736                                   enum cfg80211_station_type statype)
3737 {
3738         if (params->listen_interval != -1)
3739                 return -EINVAL;
3740         if (params->aid)
3741                 return -EINVAL;
3742
3743         /* When you run into this, adjust the code below for the new flag */
3744         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3745
3746         switch (statype) {
3747         case CFG80211_STA_MESH_PEER_KERNEL:
3748         case CFG80211_STA_MESH_PEER_USER:
3749                 /*
3750                  * No ignoring the TDLS flag here -- the userspace mesh
3751                  * code doesn't have the bug of including TDLS in the
3752                  * mask everywhere.
3753                  */
3754                 if (params->sta_flags_mask &
3755                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3756                                   BIT(NL80211_STA_FLAG_MFP) |
3757                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3758                         return -EINVAL;
3759                 break;
3760         case CFG80211_STA_TDLS_PEER_SETUP:
3761         case CFG80211_STA_TDLS_PEER_ACTIVE:
3762                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3763                         return -EINVAL;
3764                 /* ignore since it can't change */
3765                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3766                 break;
3767         default:
3768                 /* disallow mesh-specific things */
3769                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3770                         return -EINVAL;
3771                 if (params->local_pm)
3772                         return -EINVAL;
3773                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3774                         return -EINVAL;
3775         }
3776
3777         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3778             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3779                 /* TDLS can't be set, ... */
3780                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3781                         return -EINVAL;
3782                 /*
3783                  * ... but don't bother the driver with it. This works around
3784                  * a hostapd/wpa_supplicant issue -- it always includes the
3785                  * TLDS_PEER flag in the mask even for AP mode.
3786                  */
3787                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3788         }
3789
3790         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3791                 /* reject other things that can't change */
3792                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3793                         return -EINVAL;
3794                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3795                         return -EINVAL;
3796                 if (params->supported_rates)
3797                         return -EINVAL;
3798                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3799                         return -EINVAL;
3800         }
3801
3802         if (statype != CFG80211_STA_AP_CLIENT) {
3803                 if (params->vlan)
3804                         return -EINVAL;
3805         }
3806
3807         switch (statype) {
3808         case CFG80211_STA_AP_MLME_CLIENT:
3809                 /* Use this only for authorizing/unauthorizing a station */
3810                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3811                         return -EOPNOTSUPP;
3812                 break;
3813         case CFG80211_STA_AP_CLIENT:
3814                 /* accept only the listed bits */
3815                 if (params->sta_flags_mask &
3816                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3817                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3818                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3819                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3820                                   BIT(NL80211_STA_FLAG_WME) |
3821                                   BIT(NL80211_STA_FLAG_MFP)))
3822                         return -EINVAL;
3823
3824                 /* but authenticated/associated only if driver handles it */
3825                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3826                     params->sta_flags_mask &
3827                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3828                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3829                         return -EINVAL;
3830                 break;
3831         case CFG80211_STA_IBSS:
3832         case CFG80211_STA_AP_STA:
3833                 /* reject any changes other than AUTHORIZED */
3834                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3835                         return -EINVAL;
3836                 break;
3837         case CFG80211_STA_TDLS_PEER_SETUP:
3838                 /* reject any changes other than AUTHORIZED or WME */
3839                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3840                                                BIT(NL80211_STA_FLAG_WME)))
3841                         return -EINVAL;
3842                 /* force (at least) rates when authorizing */
3843                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3844                     !params->supported_rates)
3845                         return -EINVAL;
3846                 break;
3847         case CFG80211_STA_TDLS_PEER_ACTIVE:
3848                 /* reject any changes */
3849                 return -EINVAL;
3850         case CFG80211_STA_MESH_PEER_KERNEL:
3851                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3852                         return -EINVAL;
3853                 break;
3854         case CFG80211_STA_MESH_PEER_USER:
3855                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3856                         return -EINVAL;
3857                 break;
3858         }
3859
3860         return 0;
3861 }
3862 EXPORT_SYMBOL(cfg80211_check_station_change);
3863
3864 /*
3865  * Get vlan interface making sure it is running and on the right wiphy.
3866  */
3867 static struct net_device *get_vlan(struct genl_info *info,
3868                                    struct cfg80211_registered_device *rdev)
3869 {
3870         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3871         struct net_device *v;
3872         int ret;
3873
3874         if (!vlanattr)
3875                 return NULL;
3876
3877         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3878         if (!v)
3879                 return ERR_PTR(-ENODEV);
3880
3881         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3882                 ret = -EINVAL;
3883                 goto error;
3884         }
3885
3886         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3887             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3888             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3889                 ret = -EINVAL;
3890                 goto error;
3891         }
3892
3893         if (!netif_running(v)) {
3894                 ret = -ENETDOWN;
3895                 goto error;
3896         }
3897
3898         return v;
3899  error:
3900         dev_put(v);
3901         return ERR_PTR(ret);
3902 }
3903
3904 static struct nla_policy
3905 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3906         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3907         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3908 };
3909
3910 static int nl80211_parse_sta_wme(struct genl_info *info,
3911                                  struct station_parameters *params)
3912 {
3913         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3914         struct nlattr *nla;
3915         int err;
3916
3917         /* parse WME attributes if present */
3918         if (!info->attrs[NL80211_ATTR_STA_WME])
3919                 return 0;
3920
3921         nla = info->attrs[NL80211_ATTR_STA_WME];
3922         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3923                                nl80211_sta_wme_policy);
3924         if (err)
3925                 return err;
3926
3927         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3928                 params->uapsd_queues = nla_get_u8(
3929                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3930         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3931                 return -EINVAL;
3932
3933         if (tb[NL80211_STA_WME_MAX_SP])
3934                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3935
3936         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3937                 return -EINVAL;
3938
3939         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3940
3941         return 0;
3942 }
3943
3944 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3945                                       struct station_parameters *params)
3946 {
3947         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3948                 params->supported_channels =
3949                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3950                 params->supported_channels_len =
3951                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3952                 /*
3953                  * Need to include at least one (first channel, number of
3954                  * channels) tuple for each subband, and must have proper
3955                  * tuples for the rest of the data as well.
3956                  */
3957                 if (params->supported_channels_len < 2)
3958                         return -EINVAL;
3959                 if (params->supported_channels_len % 2)
3960                         return -EINVAL;
3961         }
3962
3963         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3964                 params->supported_oper_classes =
3965                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3966                 params->supported_oper_classes_len =
3967                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3968                 /*
3969                  * The value of the Length field of the Supported Operating
3970                  * Classes element is between 2 and 253.
3971                  */
3972                 if (params->supported_oper_classes_len < 2 ||
3973                     params->supported_oper_classes_len > 253)
3974                         return -EINVAL;
3975         }
3976         return 0;
3977 }
3978
3979 static int nl80211_set_station_tdls(struct genl_info *info,
3980                                     struct station_parameters *params)
3981 {
3982         int err;
3983         /* Dummy STA entry gets updated once the peer capabilities are known */
3984         if (info->attrs[NL80211_ATTR_PEER_AID])
3985                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3986         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3987                 params->ht_capa =
3988                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3989         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3990                 params->vht_capa =
3991                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3992
3993         err = nl80211_parse_sta_channel_info(info, params);
3994         if (err)
3995                 return err;
3996
3997         return nl80211_parse_sta_wme(info, params);
3998 }
3999
4000 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4001 {
4002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4003         struct net_device *dev = info->user_ptr[1];
4004         struct station_parameters params;
4005         u8 *mac_addr;
4006         int err;
4007
4008         memset(&params, 0, sizeof(params));
4009
4010         params.listen_interval = -1;
4011
4012         if (!rdev->ops->change_station)
4013                 return -EOPNOTSUPP;
4014
4015         if (info->attrs[NL80211_ATTR_STA_AID])
4016                 return -EINVAL;
4017
4018         if (!info->attrs[NL80211_ATTR_MAC])
4019                 return -EINVAL;
4020
4021         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4022
4023         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4024                 params.supported_rates =
4025                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4026                 params.supported_rates_len =
4027                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4028         }
4029
4030         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4031                 params.capability =
4032                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4033                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4034         }
4035
4036         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4037                 params.ext_capab =
4038                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4039                 params.ext_capab_len =
4040                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4041         }
4042
4043         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4044                 return -EINVAL;
4045
4046         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4047                 return -EINVAL;
4048
4049         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4050                 params.plink_action =
4051                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4052                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4053                         return -EINVAL;
4054         }
4055
4056         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4057                 params.plink_state =
4058                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4059                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4060                         return -EINVAL;
4061                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4062         }
4063
4064         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4065                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4066                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4067
4068                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4069                     pm > NL80211_MESH_POWER_MAX)
4070                         return -EINVAL;
4071
4072                 params.local_pm = pm;
4073         }
4074
4075         /* Include parameters for TDLS peer (will check later) */
4076         err = nl80211_set_station_tdls(info, &params);
4077         if (err)
4078                 return err;
4079
4080         params.vlan = get_vlan(info, rdev);
4081         if (IS_ERR(params.vlan))
4082                 return PTR_ERR(params.vlan);
4083
4084         switch (dev->ieee80211_ptr->iftype) {
4085         case NL80211_IFTYPE_AP:
4086         case NL80211_IFTYPE_AP_VLAN:
4087         case NL80211_IFTYPE_P2P_GO:
4088         case NL80211_IFTYPE_P2P_CLIENT:
4089         case NL80211_IFTYPE_STATION:
4090         case NL80211_IFTYPE_ADHOC:
4091         case NL80211_IFTYPE_MESH_POINT:
4092                 break;
4093         default:
4094                 err = -EOPNOTSUPP;
4095                 goto out_put_vlan;
4096         }
4097
4098         /* driver will call cfg80211_check_station_change() */
4099         err = rdev_change_station(rdev, dev, mac_addr, &params);
4100
4101  out_put_vlan:
4102         if (params.vlan)
4103                 dev_put(params.vlan);
4104
4105         return err;
4106 }
4107
4108 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4109 {
4110         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4111         int err;
4112         struct net_device *dev = info->user_ptr[1];
4113         struct station_parameters params;
4114         u8 *mac_addr = NULL;
4115
4116         memset(&params, 0, sizeof(params));
4117
4118         if (!rdev->ops->add_station)
4119                 return -EOPNOTSUPP;
4120
4121         if (!info->attrs[NL80211_ATTR_MAC])
4122                 return -EINVAL;
4123
4124         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4125                 return -EINVAL;
4126
4127         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4128                 return -EINVAL;
4129
4130         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4131             !info->attrs[NL80211_ATTR_PEER_AID])
4132                 return -EINVAL;
4133
4134         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4135         params.supported_rates =
4136                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4137         params.supported_rates_len =
4138                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4139         params.listen_interval =
4140                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4141
4142         if (info->attrs[NL80211_ATTR_PEER_AID])
4143                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4144         else
4145                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4146         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4147                 return -EINVAL;
4148
4149         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4150                 params.capability =
4151                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4152                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4153         }
4154
4155         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4156                 params.ext_capab =
4157                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4158                 params.ext_capab_len =
4159                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4160         }
4161
4162         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4163                 params.ht_capa =
4164                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4165
4166         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4167                 params.vht_capa =
4168                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4169
4170         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4171                 params.opmode_notif_used = true;
4172                 params.opmode_notif =
4173                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4174         }
4175
4176         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4177                 params.plink_action =
4178                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4179                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4180                         return -EINVAL;
4181         }
4182
4183         err = nl80211_parse_sta_channel_info(info, &params);
4184         if (err)
4185                 return err;
4186
4187         err = nl80211_parse_sta_wme(info, &params);
4188         if (err)
4189                 return err;
4190
4191         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4192                 return -EINVAL;
4193
4194         /* When you run into this, adjust the code below for the new flag */
4195         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4196
4197         switch (dev->ieee80211_ptr->iftype) {
4198         case NL80211_IFTYPE_AP:
4199         case NL80211_IFTYPE_AP_VLAN:
4200         case NL80211_IFTYPE_P2P_GO:
4201                 /* ignore WME attributes if iface/sta is not capable */
4202                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4203                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4204                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4205
4206                 /* TDLS peers cannot be added */
4207                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4208                     info->attrs[NL80211_ATTR_PEER_AID])
4209                         return -EINVAL;
4210                 /* but don't bother the driver with it */
4211                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4212
4213                 /* allow authenticated/associated only if driver handles it */
4214                 if (!(rdev->wiphy.features &
4215                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4216                     params.sta_flags_mask &
4217                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4218                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4219                         return -EINVAL;
4220
4221                 /* must be last in here for error handling */
4222                 params.vlan = get_vlan(info, rdev);
4223                 if (IS_ERR(params.vlan))
4224                         return PTR_ERR(params.vlan);
4225                 break;
4226         case NL80211_IFTYPE_MESH_POINT:
4227                 /* ignore uAPSD data */
4228                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4229
4230                 /* associated is disallowed */
4231                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4232                         return -EINVAL;
4233                 /* TDLS peers cannot be added */
4234                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4235                     info->attrs[NL80211_ATTR_PEER_AID])
4236                         return -EINVAL;
4237                 break;
4238         case NL80211_IFTYPE_STATION:
4239         case NL80211_IFTYPE_P2P_CLIENT:
4240                 /* ignore uAPSD data */
4241                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4242
4243                 /* these are disallowed */
4244                 if (params.sta_flags_mask &
4245                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4246                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4247                         return -EINVAL;
4248                 /* Only TDLS peers can be added */
4249                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4250                         return -EINVAL;
4251                 /* Can only add if TDLS ... */
4252                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4253                         return -EOPNOTSUPP;
4254                 /* ... with external setup is supported */
4255                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4256                         return -EOPNOTSUPP;
4257                 /*
4258                  * Older wpa_supplicant versions always mark the TDLS peer
4259                  * as authorized, but it shouldn't yet be.
4260                  */
4261                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4262                 break;
4263         default:
4264                 return -EOPNOTSUPP;
4265         }
4266
4267         /* be aware of params.vlan when changing code here */
4268
4269         err = rdev_add_station(rdev, dev, mac_addr, &params);
4270
4271         if (params.vlan)
4272                 dev_put(params.vlan);
4273         return err;
4274 }
4275
4276 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4277 {
4278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4279         struct net_device *dev = info->user_ptr[1];
4280         u8 *mac_addr = NULL;
4281
4282         if (info->attrs[NL80211_ATTR_MAC])
4283                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4284
4285         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4286             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4287             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4288             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4289                 return -EINVAL;
4290
4291         if (!rdev->ops->del_station)
4292                 return -EOPNOTSUPP;
4293
4294         return rdev_del_station(rdev, dev, mac_addr);
4295 }
4296
4297 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4298                                 int flags, struct net_device *dev,
4299                                 u8 *dst, u8 *next_hop,
4300                                 struct mpath_info *pinfo)
4301 {
4302         void *hdr;
4303         struct nlattr *pinfoattr;
4304
4305         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4306         if (!hdr)
4307                 return -1;
4308
4309         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4310             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4311             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4312             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4313                 goto nla_put_failure;
4314
4315         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4316         if (!pinfoattr)
4317                 goto nla_put_failure;
4318         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4319             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4320                         pinfo->frame_qlen))
4321                 goto nla_put_failure;
4322         if (((pinfo->filled & MPATH_INFO_SN) &&
4323              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4324             ((pinfo->filled & MPATH_INFO_METRIC) &&
4325              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4326                          pinfo->metric)) ||
4327             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4328              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4329                          pinfo->exptime)) ||
4330             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4331              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4332                         pinfo->flags)) ||
4333             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4334              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4335                          pinfo->discovery_timeout)) ||
4336             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4337              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4338                         pinfo->discovery_retries)))
4339                 goto nla_put_failure;
4340
4341         nla_nest_end(msg, pinfoattr);
4342
4343         return genlmsg_end(msg, hdr);
4344
4345  nla_put_failure:
4346         genlmsg_cancel(msg, hdr);
4347         return -EMSGSIZE;
4348 }
4349
4350 static int nl80211_dump_mpath(struct sk_buff *skb,
4351                               struct netlink_callback *cb)
4352 {
4353         struct mpath_info pinfo;
4354         struct cfg80211_registered_device *dev;
4355         struct wireless_dev *wdev;
4356         u8 dst[ETH_ALEN];
4357         u8 next_hop[ETH_ALEN];
4358         int path_idx = cb->args[2];
4359         int err;
4360
4361         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4362         if (err)
4363                 return err;
4364
4365         if (!dev->ops->dump_mpath) {
4366                 err = -EOPNOTSUPP;
4367                 goto out_err;
4368         }
4369
4370         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4371                 err = -EOPNOTSUPP;
4372                 goto out_err;
4373         }
4374
4375         while (1) {
4376                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4377                                       next_hop, &pinfo);
4378                 if (err == -ENOENT)
4379                         break;
4380                 if (err)
4381                         goto out_err;
4382
4383                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4384                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4385                                        wdev->netdev, dst, next_hop,
4386                                        &pinfo) < 0)
4387                         goto out;
4388
4389                 path_idx++;
4390         }
4391
4392
4393  out:
4394         cb->args[2] = path_idx;
4395         err = skb->len;
4396  out_err:
4397         nl80211_finish_wdev_dump(dev);
4398         return err;
4399 }
4400
4401 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4402 {
4403         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4404         int err;
4405         struct net_device *dev = info->user_ptr[1];
4406         struct mpath_info pinfo;
4407         struct sk_buff *msg;
4408         u8 *dst = NULL;
4409         u8 next_hop[ETH_ALEN];
4410
4411         memset(&pinfo, 0, sizeof(pinfo));
4412
4413         if (!info->attrs[NL80211_ATTR_MAC])
4414                 return -EINVAL;
4415
4416         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4417
4418         if (!rdev->ops->get_mpath)
4419                 return -EOPNOTSUPP;
4420
4421         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4422                 return -EOPNOTSUPP;
4423
4424         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4425         if (err)
4426                 return err;
4427
4428         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4429         if (!msg)
4430                 return -ENOMEM;
4431
4432         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4433                                  dev, dst, next_hop, &pinfo) < 0) {
4434                 nlmsg_free(msg);
4435                 return -ENOBUFS;
4436         }
4437
4438         return genlmsg_reply(msg, info);
4439 }
4440
4441 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4442 {
4443         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4444         struct net_device *dev = info->user_ptr[1];
4445         u8 *dst = NULL;
4446         u8 *next_hop = NULL;
4447
4448         if (!info->attrs[NL80211_ATTR_MAC])
4449                 return -EINVAL;
4450
4451         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4452                 return -EINVAL;
4453
4454         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4455         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4456
4457         if (!rdev->ops->change_mpath)
4458                 return -EOPNOTSUPP;
4459
4460         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4461                 return -EOPNOTSUPP;
4462
4463         return rdev_change_mpath(rdev, dev, dst, next_hop);
4464 }
4465
4466 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4467 {
4468         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4469         struct net_device *dev = info->user_ptr[1];
4470         u8 *dst = NULL;
4471         u8 *next_hop = NULL;
4472
4473         if (!info->attrs[NL80211_ATTR_MAC])
4474                 return -EINVAL;
4475
4476         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4477                 return -EINVAL;
4478
4479         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4480         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4481
4482         if (!rdev->ops->add_mpath)
4483                 return -EOPNOTSUPP;
4484
4485         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4486                 return -EOPNOTSUPP;
4487
4488         return rdev_add_mpath(rdev, dev, dst, next_hop);
4489 }
4490
4491 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4492 {
4493         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4494         struct net_device *dev = info->user_ptr[1];
4495         u8 *dst = NULL;
4496
4497         if (info->attrs[NL80211_ATTR_MAC])
4498                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4499
4500         if (!rdev->ops->del_mpath)
4501                 return -EOPNOTSUPP;
4502
4503         return rdev_del_mpath(rdev, dev, dst);
4504 }
4505
4506 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4507 {
4508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4509         struct net_device *dev = info->user_ptr[1];
4510         struct wireless_dev *wdev = dev->ieee80211_ptr;
4511         struct bss_parameters params;
4512         int err;
4513
4514         memset(&params, 0, sizeof(params));
4515         /* default to not changing parameters */
4516         params.use_cts_prot = -1;
4517         params.use_short_preamble = -1;
4518         params.use_short_slot_time = -1;
4519         params.ap_isolate = -1;
4520         params.ht_opmode = -1;
4521         params.p2p_ctwindow = -1;
4522         params.p2p_opp_ps = -1;
4523
4524         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4525                 params.use_cts_prot =
4526                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4527         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4528                 params.use_short_preamble =
4529                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4530         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4531                 params.use_short_slot_time =
4532                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4533         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4534                 params.basic_rates =
4535                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4536                 params.basic_rates_len =
4537                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4538         }
4539         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4540                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4541         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4542                 params.ht_opmode =
4543                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4544
4545         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4546                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4547                         return -EINVAL;
4548                 params.p2p_ctwindow =
4549                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4550                 if (params.p2p_ctwindow < 0)
4551                         return -EINVAL;
4552                 if (params.p2p_ctwindow != 0 &&
4553                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4554                         return -EINVAL;
4555         }
4556
4557         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4558                 u8 tmp;
4559
4560                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4561                         return -EINVAL;
4562                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4563                 if (tmp > 1)
4564                         return -EINVAL;
4565                 params.p2p_opp_ps = tmp;
4566                 if (params.p2p_opp_ps &&
4567                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4568                         return -EINVAL;
4569         }
4570
4571         if (!rdev->ops->change_bss)
4572                 return -EOPNOTSUPP;
4573
4574         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4575             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4576                 return -EOPNOTSUPP;
4577
4578         wdev_lock(wdev);
4579         err = rdev_change_bss(rdev, dev, &params);
4580         wdev_unlock(wdev);
4581
4582         return err;
4583 }
4584
4585 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4586         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4587         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4588         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4589         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4590         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4591         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4592 };
4593
4594 static int parse_reg_rule(struct nlattr *tb[],
4595         struct ieee80211_reg_rule *reg_rule)
4596 {
4597         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4598         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4599
4600         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4601                 return -EINVAL;
4602         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4603                 return -EINVAL;
4604         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4605                 return -EINVAL;
4606         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4607                 return -EINVAL;
4608         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4609                 return -EINVAL;
4610
4611         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4612
4613         freq_range->start_freq_khz =
4614                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4615         freq_range->end_freq_khz =
4616                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4617         freq_range->max_bandwidth_khz =
4618                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4619
4620         power_rule->max_eirp =
4621                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4622
4623         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4624                 power_rule->max_antenna_gain =
4625                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4626
4627         return 0;
4628 }
4629
4630 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4631 {
4632         int r;
4633         char *data = NULL;
4634         enum nl80211_user_reg_hint_type user_reg_hint_type;
4635
4636         /*
4637          * You should only get this when cfg80211 hasn't yet initialized
4638          * completely when built-in to the kernel right between the time
4639          * window between nl80211_init() and regulatory_init(), if that is
4640          * even possible.
4641          */
4642         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4643                 return -EINPROGRESS;
4644
4645         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4646                 return -EINVAL;
4647
4648         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4649
4650         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4651                 user_reg_hint_type =
4652                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4653         else
4654                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4655
4656         switch (user_reg_hint_type) {
4657         case NL80211_USER_REG_HINT_USER:
4658         case NL80211_USER_REG_HINT_CELL_BASE:
4659                 break;
4660         default:
4661                 return -EINVAL;
4662         }
4663
4664         r = regulatory_hint_user(data, user_reg_hint_type);
4665
4666         return r;
4667 }
4668
4669 static int nl80211_get_mesh_config(struct sk_buff *skb,
4670                                    struct genl_info *info)
4671 {
4672         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4673         struct net_device *dev = info->user_ptr[1];
4674         struct wireless_dev *wdev = dev->ieee80211_ptr;
4675         struct mesh_config cur_params;
4676         int err = 0;
4677         void *hdr;
4678         struct nlattr *pinfoattr;
4679         struct sk_buff *msg;
4680
4681         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4682                 return -EOPNOTSUPP;
4683
4684         if (!rdev->ops->get_mesh_config)
4685                 return -EOPNOTSUPP;
4686
4687         wdev_lock(wdev);
4688         /* If not connected, get default parameters */
4689         if (!wdev->mesh_id_len)
4690                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4691         else
4692                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4693         wdev_unlock(wdev);
4694
4695         if (err)
4696                 return err;
4697
4698         /* Draw up a netlink message to send back */
4699         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4700         if (!msg)
4701                 return -ENOMEM;
4702         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4703                              NL80211_CMD_GET_MESH_CONFIG);
4704         if (!hdr)
4705                 goto out;
4706         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4707         if (!pinfoattr)
4708                 goto nla_put_failure;
4709         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4710             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4711                         cur_params.dot11MeshRetryTimeout) ||
4712             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4713                         cur_params.dot11MeshConfirmTimeout) ||
4714             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4715                         cur_params.dot11MeshHoldingTimeout) ||
4716             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4717                         cur_params.dot11MeshMaxPeerLinks) ||
4718             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4719                        cur_params.dot11MeshMaxRetries) ||
4720             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4721                        cur_params.dot11MeshTTL) ||
4722             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4723                        cur_params.element_ttl) ||
4724             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4725                        cur_params.auto_open_plinks) ||
4726             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4727                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4728             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4729                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4730             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4731                         cur_params.path_refresh_time) ||
4732             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4733                         cur_params.min_discovery_timeout) ||
4734             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4735                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4736             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4737                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4738             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4739                         cur_params.dot11MeshHWMPperrMinInterval) ||
4740             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4741                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4742             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4743                        cur_params.dot11MeshHWMPRootMode) ||
4744             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4745                         cur_params.dot11MeshHWMPRannInterval) ||
4746             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4747                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4748             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4749                        cur_params.dot11MeshForwarding) ||
4750             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4751                         cur_params.rssi_threshold) ||
4752             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4753                         cur_params.ht_opmode) ||
4754             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4755                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4756             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4757                         cur_params.dot11MeshHWMProotInterval) ||
4758             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4759                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4760             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4761                         cur_params.power_mode) ||
4762             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4763                         cur_params.dot11MeshAwakeWindowDuration) ||
4764             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4765                         cur_params.plink_timeout))
4766                 goto nla_put_failure;
4767         nla_nest_end(msg, pinfoattr);
4768         genlmsg_end(msg, hdr);
4769         return genlmsg_reply(msg, info);
4770
4771  nla_put_failure:
4772         genlmsg_cancel(msg, hdr);
4773  out:
4774         nlmsg_free(msg);
4775         return -ENOBUFS;
4776 }
4777
4778 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4779         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4780         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4781         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4782         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4783         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4784         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4785         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4786         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4787         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4788         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4789         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4790         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4791         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4792         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4793         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4794         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4795         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4796         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4797         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4798         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4799         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4800         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4801         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4802         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4803         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4804         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4805         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4806         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4807 };
4808
4809 static const struct nla_policy
4810         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4811         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4812         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4813         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4814         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4815         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4816         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4817         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4818                                     .len = IEEE80211_MAX_DATA_LEN },
4819         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4820 };
4821
4822 static int nl80211_parse_mesh_config(struct genl_info *info,
4823                                      struct mesh_config *cfg,
4824                                      u32 *mask_out)
4825 {
4826         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4827         u32 mask = 0;
4828
4829 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4830 do {                                                                        \
4831         if (tb[attr]) {                                                     \
4832                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4833                         return -EINVAL;                                     \
4834                 cfg->param = fn(tb[attr]);                                  \
4835                 mask |= (1 << (attr - 1));                                  \
4836         }                                                                   \
4837 } while (0)
4838
4839
4840         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4841                 return -EINVAL;
4842         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4843                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4844                              nl80211_meshconf_params_policy))
4845                 return -EINVAL;
4846
4847         /* This makes sure that there aren't more than 32 mesh config
4848          * parameters (otherwise our bitfield scheme would not work.) */
4849         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4850
4851         /* Fill in the params struct */
4852         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4853                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4854                                   nla_get_u16);
4855         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4856                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4857                                   nla_get_u16);
4858         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4859                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4860                                   nla_get_u16);
4861         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4862                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4863                                   nla_get_u16);
4864         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4865                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4866                                   nla_get_u8);
4867         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4868                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4869         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4870                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4871                                   nla_get_u8);
4872         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4873                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4874                                   nla_get_u8);
4875         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4876                                   1, 255, mask,
4877                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4878                                   nla_get_u32);
4879         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4880                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4881                                   nla_get_u8);
4882         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4883                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4884                                   nla_get_u32);
4885         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4886                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4887                                   nla_get_u16);
4888         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4889                                   1, 65535, mask,
4890                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4891                                   nla_get_u32);
4892         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4893                                   1, 65535, mask,
4894                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4895                                   nla_get_u16);
4896         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4897                                   1, 65535, mask,
4898                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4899                                   nla_get_u16);
4900         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4901                                   dot11MeshHWMPnetDiameterTraversalTime,
4902                                   1, 65535, mask,
4903                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4904                                   nla_get_u16);
4905         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4906                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4907                                   nla_get_u8);
4908         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4909                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4910                                   nla_get_u16);
4911         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4912                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4913                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4914                                   nla_get_u8);
4915         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4916                                   mask, NL80211_MESHCONF_FORWARDING,
4917                                   nla_get_u8);
4918         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4919                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4920                                   nla_get_s32);
4921         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4922                                   mask, NL80211_MESHCONF_HT_OPMODE,
4923                                   nla_get_u16);
4924         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4925                                   1, 65535, mask,
4926                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4927                                   nla_get_u32);
4928         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4929                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4930                                   nla_get_u16);
4931         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4932                                   dot11MeshHWMPconfirmationInterval,
4933                                   1, 65535, mask,
4934                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4935                                   nla_get_u16);
4936         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4937                                   NL80211_MESH_POWER_ACTIVE,
4938                                   NL80211_MESH_POWER_MAX,
4939                                   mask, NL80211_MESHCONF_POWER_MODE,
4940                                   nla_get_u32);
4941         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4942                                   0, 65535, mask,
4943                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4944         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4945                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4946                                   nla_get_u32);
4947         if (mask_out)
4948                 *mask_out = mask;
4949
4950         return 0;
4951
4952 #undef FILL_IN_MESH_PARAM_IF_SET
4953 }
4954
4955 static int nl80211_parse_mesh_setup(struct genl_info *info,
4956                                      struct mesh_setup *setup)
4957 {
4958         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4959         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4960
4961         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4962                 return -EINVAL;
4963         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4964                              info->attrs[NL80211_ATTR_MESH_SETUP],
4965                              nl80211_mesh_setup_params_policy))
4966                 return -EINVAL;
4967
4968         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4969                 setup->sync_method =
4970                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4971                  IEEE80211_SYNC_METHOD_VENDOR :
4972                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4973
4974         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4975                 setup->path_sel_proto =
4976                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4977                  IEEE80211_PATH_PROTOCOL_VENDOR :
4978                  IEEE80211_PATH_PROTOCOL_HWMP;
4979
4980         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4981                 setup->path_metric =
4982                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4983                  IEEE80211_PATH_METRIC_VENDOR :
4984                  IEEE80211_PATH_METRIC_AIRTIME;
4985
4986
4987         if (tb[NL80211_MESH_SETUP_IE]) {
4988                 struct nlattr *ieattr =
4989                         tb[NL80211_MESH_SETUP_IE];
4990                 if (!is_valid_ie_attr(ieattr))
4991                         return -EINVAL;
4992                 setup->ie = nla_data(ieattr);
4993                 setup->ie_len = nla_len(ieattr);
4994         }
4995         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4996             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4997                 return -EINVAL;
4998         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4999         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5000         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5001         if (setup->is_secure)
5002                 setup->user_mpm = true;
5003
5004         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5005                 if (!setup->user_mpm)
5006                         return -EINVAL;
5007                 setup->auth_id =
5008                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5009         }
5010
5011         return 0;
5012 }
5013
5014 static int nl80211_update_mesh_config(struct sk_buff *skb,
5015                                       struct genl_info *info)
5016 {
5017         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5018         struct net_device *dev = info->user_ptr[1];
5019         struct wireless_dev *wdev = dev->ieee80211_ptr;
5020         struct mesh_config cfg;
5021         u32 mask;
5022         int err;
5023
5024         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5025                 return -EOPNOTSUPP;
5026
5027         if (!rdev->ops->update_mesh_config)
5028                 return -EOPNOTSUPP;
5029
5030         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5031         if (err)
5032                 return err;
5033
5034         wdev_lock(wdev);
5035         if (!wdev->mesh_id_len)
5036                 err = -ENOLINK;
5037
5038         if (!err)
5039                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5040
5041         wdev_unlock(wdev);
5042
5043         return err;
5044 }
5045
5046 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5047 {
5048         const struct ieee80211_regdomain *regdom;
5049         struct sk_buff *msg;
5050         void *hdr = NULL;
5051         struct nlattr *nl_reg_rules;
5052         unsigned int i;
5053
5054         if (!cfg80211_regdomain)
5055                 return -EINVAL;
5056
5057         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5058         if (!msg)
5059                 return -ENOBUFS;
5060
5061         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5062                              NL80211_CMD_GET_REG);
5063         if (!hdr)
5064                 goto put_failure;
5065
5066         if (reg_last_request_cell_base() &&
5067             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5068                         NL80211_USER_REG_HINT_CELL_BASE))
5069                 goto nla_put_failure;
5070
5071         rcu_read_lock();
5072         regdom = rcu_dereference(cfg80211_regdomain);
5073
5074         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5075             (regdom->dfs_region &&
5076              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5077                 goto nla_put_failure_rcu;
5078
5079         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5080         if (!nl_reg_rules)
5081                 goto nla_put_failure_rcu;
5082
5083         for (i = 0; i < regdom->n_reg_rules; i++) {
5084                 struct nlattr *nl_reg_rule;
5085                 const struct ieee80211_reg_rule *reg_rule;
5086                 const struct ieee80211_freq_range *freq_range;
5087                 const struct ieee80211_power_rule *power_rule;
5088
5089                 reg_rule = &regdom->reg_rules[i];
5090                 freq_range = &reg_rule->freq_range;
5091                 power_rule = &reg_rule->power_rule;
5092
5093                 nl_reg_rule = nla_nest_start(msg, i);
5094                 if (!nl_reg_rule)
5095                         goto nla_put_failure_rcu;
5096
5097                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5098                                 reg_rule->flags) ||
5099                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5100                                 freq_range->start_freq_khz) ||
5101                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5102                                 freq_range->end_freq_khz) ||
5103                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5104                                 freq_range->max_bandwidth_khz) ||
5105                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5106                                 power_rule->max_antenna_gain) ||
5107                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5108                                 power_rule->max_eirp))
5109                         goto nla_put_failure_rcu;
5110
5111                 nla_nest_end(msg, nl_reg_rule);
5112         }
5113         rcu_read_unlock();
5114
5115         nla_nest_end(msg, nl_reg_rules);
5116
5117         genlmsg_end(msg, hdr);
5118         return genlmsg_reply(msg, info);
5119
5120 nla_put_failure_rcu:
5121         rcu_read_unlock();
5122 nla_put_failure:
5123         genlmsg_cancel(msg, hdr);
5124 put_failure:
5125         nlmsg_free(msg);
5126         return -EMSGSIZE;
5127 }
5128
5129 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5130 {
5131         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5132         struct nlattr *nl_reg_rule;
5133         char *alpha2 = NULL;
5134         int rem_reg_rules = 0, r = 0;
5135         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5136         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5137         struct ieee80211_regdomain *rd = NULL;
5138
5139         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5140                 return -EINVAL;
5141
5142         if (!info->attrs[NL80211_ATTR_REG_RULES])
5143                 return -EINVAL;
5144
5145         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5146
5147         if (info->attrs[NL80211_ATTR_DFS_REGION])
5148                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5149
5150         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5151                             rem_reg_rules) {
5152                 num_rules++;
5153                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5154                         return -EINVAL;
5155         }
5156
5157         if (!reg_is_valid_request(alpha2))
5158                 return -EINVAL;
5159
5160         size_of_regd = sizeof(struct ieee80211_regdomain) +
5161                        num_rules * sizeof(struct ieee80211_reg_rule);
5162
5163         rd = kzalloc(size_of_regd, GFP_KERNEL);
5164         if (!rd)
5165                 return -ENOMEM;
5166
5167         rd->n_reg_rules = num_rules;
5168         rd->alpha2[0] = alpha2[0];
5169         rd->alpha2[1] = alpha2[1];
5170
5171         /*
5172          * Disable DFS master mode if the DFS region was
5173          * not supported or known on this kernel.
5174          */
5175         if (reg_supported_dfs_region(dfs_region))
5176                 rd->dfs_region = dfs_region;
5177
5178         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5179                             rem_reg_rules) {
5180                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5181                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5182                           reg_rule_policy);
5183                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5184                 if (r)
5185                         goto bad_reg;
5186
5187                 rule_idx++;
5188
5189                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5190                         r = -EINVAL;
5191                         goto bad_reg;
5192                 }
5193         }
5194
5195         r = set_regdom(rd);
5196         /* set_regdom took ownership */
5197         rd = NULL;
5198
5199  bad_reg:
5200         kfree(rd);
5201         return r;
5202 }
5203
5204 static int validate_scan_freqs(struct nlattr *freqs)
5205 {
5206         struct nlattr *attr1, *attr2;
5207         int n_channels = 0, tmp1, tmp2;
5208
5209         nla_for_each_nested(attr1, freqs, tmp1) {
5210                 n_channels++;
5211                 /*
5212                  * Some hardware has a limited channel list for
5213                  * scanning, and it is pretty much nonsensical
5214                  * to scan for a channel twice, so disallow that
5215                  * and don't require drivers to check that the
5216                  * channel list they get isn't longer than what
5217                  * they can scan, as long as they can scan all
5218                  * the channels they registered at once.
5219                  */
5220                 nla_for_each_nested(attr2, freqs, tmp2)
5221                         if (attr1 != attr2 &&
5222                             nla_get_u32(attr1) == nla_get_u32(attr2))
5223                                 return 0;
5224         }
5225
5226         return n_channels;
5227 }
5228
5229 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5230 {
5231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5232         struct wireless_dev *wdev = info->user_ptr[1];
5233         struct cfg80211_scan_request *request;
5234         struct nlattr *attr;
5235         struct wiphy *wiphy;
5236         int err, tmp, n_ssids = 0, n_channels, i;
5237         size_t ie_len;
5238
5239         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5240                 return -EINVAL;
5241
5242         wiphy = &rdev->wiphy;
5243
5244         if (!rdev->ops->scan)
5245                 return -EOPNOTSUPP;
5246
5247         if (rdev->scan_req) {
5248                 err = -EBUSY;
5249                 goto unlock;
5250         }
5251
5252         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5253                 n_channels = validate_scan_freqs(
5254                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5255                 if (!n_channels) {
5256                         err = -EINVAL;
5257                         goto unlock;
5258                 }
5259         } else {
5260                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5261         }
5262
5263         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5264                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5265                         n_ssids++;
5266
5267         if (n_ssids > wiphy->max_scan_ssids) {
5268                 err = -EINVAL;
5269                 goto unlock;
5270         }
5271
5272         if (info->attrs[NL80211_ATTR_IE])
5273                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5274         else
5275                 ie_len = 0;
5276
5277         if (ie_len > wiphy->max_scan_ie_len) {
5278                 err = -EINVAL;
5279                 goto unlock;
5280         }
5281
5282         request = kzalloc(sizeof(*request)
5283                         + sizeof(*request->ssids) * n_ssids
5284                         + sizeof(*request->channels) * n_channels
5285                         + ie_len, GFP_KERNEL);
5286         if (!request) {
5287                 err = -ENOMEM;
5288                 goto unlock;
5289         }
5290
5291         if (n_ssids)
5292                 request->ssids = (void *)&request->channels[n_channels];
5293         request->n_ssids = n_ssids;
5294         if (ie_len) {
5295                 if (request->ssids)
5296                         request->ie = (void *)(request->ssids + n_ssids);
5297                 else
5298                         request->ie = (void *)(request->channels + n_channels);
5299         }
5300
5301         i = 0;
5302         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5303                 /* user specified, bail out if channel not found */
5304                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5305                         struct ieee80211_channel *chan;
5306
5307                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5308
5309                         if (!chan) {
5310                                 err = -EINVAL;
5311                                 goto out_free;
5312                         }
5313
5314                         /* ignore disabled channels */
5315                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5316                                 continue;
5317
5318                         request->channels[i] = chan;
5319                         i++;
5320                 }
5321         } else {
5322                 enum ieee80211_band band;
5323
5324                 /* all channels */
5325                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5326                         int j;
5327                         if (!wiphy->bands[band])
5328                                 continue;
5329                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5330                                 struct ieee80211_channel *chan;
5331
5332                                 chan = &wiphy->bands[band]->channels[j];
5333
5334                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5335                                         continue;
5336
5337                                 request->channels[i] = chan;
5338                                 i++;
5339                         }
5340                 }
5341         }
5342
5343         if (!i) {
5344                 err = -EINVAL;
5345                 goto out_free;
5346         }
5347
5348         request->n_channels = i;
5349
5350         i = 0;
5351         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5352                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5353                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5354                                 err = -EINVAL;
5355                                 goto out_free;
5356                         }
5357                         request->ssids[i].ssid_len = nla_len(attr);
5358                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5359                         i++;
5360                 }
5361         }
5362
5363         if (info->attrs[NL80211_ATTR_IE]) {
5364                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5365                 memcpy((void *)request->ie,
5366                        nla_data(info->attrs[NL80211_ATTR_IE]),
5367                        request->ie_len);
5368         }
5369
5370         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5371                 if (wiphy->bands[i])
5372                         request->rates[i] =
5373                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5374
5375         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5376                 nla_for_each_nested(attr,
5377                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5378                                     tmp) {
5379                         enum ieee80211_band band = nla_type(attr);
5380
5381                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5382                                 err = -EINVAL;
5383                                 goto out_free;
5384                         }
5385
5386                         if (!wiphy->bands[band])
5387                                 continue;
5388
5389                         err = ieee80211_get_ratemask(wiphy->bands[band],
5390                                                      nla_data(attr),
5391                                                      nla_len(attr),
5392                                                      &request->rates[band]);
5393                         if (err)
5394                                 goto out_free;
5395                 }
5396         }
5397
5398         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5399                 request->flags = nla_get_u32(
5400                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5401                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5402                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5403                         err = -EOPNOTSUPP;
5404                         goto out_free;
5405                 }
5406         }
5407
5408         request->no_cck =
5409                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5410
5411         request->wdev = wdev;
5412         request->wiphy = &rdev->wiphy;
5413         request->scan_start = jiffies;
5414
5415         rdev->scan_req = request;
5416         err = rdev_scan(rdev, request);
5417
5418         if (!err) {
5419                 nl80211_send_scan_start(rdev, wdev);
5420                 if (wdev->netdev)
5421                         dev_hold(wdev->netdev);
5422         } else {
5423  out_free:
5424                 rdev->scan_req = NULL;
5425                 kfree(request);
5426         }
5427
5428  unlock:
5429         return err;
5430 }
5431
5432 static int nl80211_start_sched_scan(struct sk_buff *skb,
5433                                     struct genl_info *info)
5434 {
5435         struct cfg80211_sched_scan_request *request;
5436         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5437         struct net_device *dev = info->user_ptr[1];
5438         struct nlattr *attr;
5439         struct wiphy *wiphy;
5440         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5441         u32 interval;
5442         enum ieee80211_band band;
5443         size_t ie_len;
5444         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5445
5446         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5447             !rdev->ops->sched_scan_start)
5448                 return -EOPNOTSUPP;
5449
5450         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5451                 return -EINVAL;
5452
5453         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5454                 return -EINVAL;
5455
5456         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5457         if (interval == 0)
5458                 return -EINVAL;
5459
5460         wiphy = &rdev->wiphy;
5461
5462         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5463                 n_channels = validate_scan_freqs(
5464                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5465                 if (!n_channels)
5466                         return -EINVAL;
5467         } else {
5468                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5469         }
5470
5471         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5472                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5473                                     tmp)
5474                         n_ssids++;
5475
5476         if (n_ssids > wiphy->max_sched_scan_ssids)
5477                 return -EINVAL;
5478
5479         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5480                 nla_for_each_nested(attr,
5481                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5482                                     tmp)
5483                         n_match_sets++;
5484
5485         if (n_match_sets > wiphy->max_match_sets)
5486                 return -EINVAL;
5487
5488         if (info->attrs[NL80211_ATTR_IE])
5489                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5490         else
5491                 ie_len = 0;
5492
5493         if (ie_len > wiphy->max_sched_scan_ie_len)
5494                 return -EINVAL;
5495
5496         if (rdev->sched_scan_req) {
5497                 err = -EINPROGRESS;
5498                 goto out;
5499         }
5500
5501         request = kzalloc(sizeof(*request)
5502                         + sizeof(*request->ssids) * n_ssids
5503                         + sizeof(*request->match_sets) * n_match_sets
5504                         + sizeof(*request->channels) * n_channels
5505                         + ie_len, GFP_KERNEL);
5506         if (!request) {
5507                 err = -ENOMEM;
5508                 goto out;
5509         }
5510
5511         if (n_ssids)
5512                 request->ssids = (void *)&request->channels[n_channels];
5513         request->n_ssids = n_ssids;
5514         if (ie_len) {
5515                 if (request->ssids)
5516                         request->ie = (void *)(request->ssids + n_ssids);
5517                 else
5518                         request->ie = (void *)(request->channels + n_channels);
5519         }
5520
5521         if (n_match_sets) {
5522                 if (request->ie)
5523                         request->match_sets = (void *)(request->ie + ie_len);
5524                 else if (request->ssids)
5525                         request->match_sets =
5526                                 (void *)(request->ssids + n_ssids);
5527                 else
5528                         request->match_sets =
5529                                 (void *)(request->channels + n_channels);
5530         }
5531         request->n_match_sets = n_match_sets;
5532
5533         i = 0;
5534         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5535                 /* user specified, bail out if channel not found */
5536                 nla_for_each_nested(attr,
5537                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5538                                     tmp) {
5539                         struct ieee80211_channel *chan;
5540
5541                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5542
5543                         if (!chan) {
5544                                 err = -EINVAL;
5545                                 goto out_free;
5546                         }
5547
5548                         /* ignore disabled channels */
5549                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5550                                 continue;
5551
5552                         request->channels[i] = chan;
5553                         i++;
5554                 }
5555         } else {
5556                 /* all channels */
5557                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5558                         int j;
5559                         if (!wiphy->bands[band])
5560                                 continue;
5561                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5562                                 struct ieee80211_channel *chan;
5563
5564                                 chan = &wiphy->bands[band]->channels[j];
5565
5566                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5567                                         continue;
5568
5569                                 request->channels[i] = chan;
5570                                 i++;
5571                         }
5572                 }
5573         }
5574
5575         if (!i) {
5576                 err = -EINVAL;
5577                 goto out_free;
5578         }
5579
5580         request->n_channels = i;
5581
5582         i = 0;
5583         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5584                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5585                                     tmp) {
5586                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5587                                 err = -EINVAL;
5588                                 goto out_free;
5589                         }
5590                         request->ssids[i].ssid_len = nla_len(attr);
5591                         memcpy(request->ssids[i].ssid, nla_data(attr),
5592                                nla_len(attr));
5593                         i++;
5594                 }
5595         }
5596
5597         i = 0;
5598         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5599                 nla_for_each_nested(attr,
5600                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5601                                     tmp) {
5602                         struct nlattr *ssid, *rssi;
5603
5604                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5605                                   nla_data(attr), nla_len(attr),
5606                                   nl80211_match_policy);
5607                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5608                         if (ssid) {
5609                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5610                                         err = -EINVAL;
5611                                         goto out_free;
5612                                 }
5613                                 memcpy(request->match_sets[i].ssid.ssid,
5614                                        nla_data(ssid), nla_len(ssid));
5615                                 request->match_sets[i].ssid.ssid_len =
5616                                         nla_len(ssid);
5617                         }
5618                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5619                         if (rssi)
5620                                 request->rssi_thold = nla_get_u32(rssi);
5621                         else
5622                                 request->rssi_thold =
5623                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5624                         i++;
5625                 }
5626         }
5627
5628         if (info->attrs[NL80211_ATTR_IE]) {
5629                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5630                 memcpy((void *)request->ie,
5631                        nla_data(info->attrs[NL80211_ATTR_IE]),
5632                        request->ie_len);
5633         }
5634
5635         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5636                 request->flags = nla_get_u32(
5637                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5638                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5639                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5640                         err = -EOPNOTSUPP;
5641                         goto out_free;
5642                 }
5643         }
5644
5645         request->dev = dev;
5646         request->wiphy = &rdev->wiphy;
5647         request->interval = interval;
5648         request->scan_start = jiffies;
5649
5650         err = rdev_sched_scan_start(rdev, dev, request);
5651         if (!err) {
5652                 rdev->sched_scan_req = request;
5653                 nl80211_send_sched_scan(rdev, dev,
5654                                         NL80211_CMD_START_SCHED_SCAN);
5655                 goto out;
5656         }
5657
5658 out_free:
5659         kfree(request);
5660 out:
5661         return err;
5662 }
5663
5664 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5665                                    struct genl_info *info)
5666 {
5667         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5668
5669         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5670             !rdev->ops->sched_scan_stop)
5671                 return -EOPNOTSUPP;
5672
5673         return __cfg80211_stop_sched_scan(rdev, false);
5674 }
5675
5676 static int nl80211_start_radar_detection(struct sk_buff *skb,
5677                                          struct genl_info *info)
5678 {
5679         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5680         struct net_device *dev = info->user_ptr[1];
5681         struct wireless_dev *wdev = dev->ieee80211_ptr;
5682         struct cfg80211_chan_def chandef;
5683         enum nl80211_dfs_regions dfs_region;
5684         int err;
5685
5686         dfs_region = reg_get_dfs_region(wdev->wiphy);
5687         if (dfs_region == NL80211_DFS_UNSET)
5688                 return -EINVAL;
5689
5690         err = nl80211_parse_chandef(rdev, info, &chandef);
5691         if (err)
5692                 return err;
5693
5694         if (netif_carrier_ok(dev))
5695                 return -EBUSY;
5696
5697         if (wdev->cac_started)
5698                 return -EBUSY;
5699
5700         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5701         if (err < 0)
5702                 return err;
5703
5704         if (err == 0)
5705                 return -EINVAL;
5706
5707         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
5708                 return -EINVAL;
5709
5710         if (!rdev->ops->start_radar_detection)
5711                 return -EOPNOTSUPP;
5712
5713         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5714                                            chandef.chan, CHAN_MODE_SHARED,
5715                                            BIT(chandef.width));
5716         if (err)
5717                 return err;
5718
5719         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5720         if (!err) {
5721                 wdev->channel = chandef.chan;
5722                 wdev->cac_started = true;
5723                 wdev->cac_start_time = jiffies;
5724         }
5725         return err;
5726 }
5727
5728 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5729 {
5730         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5731         struct net_device *dev = info->user_ptr[1];
5732         struct wireless_dev *wdev = dev->ieee80211_ptr;
5733         struct cfg80211_csa_settings params;
5734         /* csa_attrs is defined static to avoid waste of stack size - this
5735          * function is called under RTNL lock, so this should not be a problem.
5736          */
5737         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5738         u8 radar_detect_width = 0;
5739         int err;
5740         bool need_new_beacon = false;
5741
5742         if (!rdev->ops->channel_switch ||
5743             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5744                 return -EOPNOTSUPP;
5745
5746         switch (dev->ieee80211_ptr->iftype) {
5747         case NL80211_IFTYPE_AP:
5748         case NL80211_IFTYPE_P2P_GO:
5749                 need_new_beacon = true;
5750
5751                 /* useless if AP is not running */
5752                 if (!wdev->beacon_interval)
5753                         return -EINVAL;
5754                 break;
5755         case NL80211_IFTYPE_ADHOC:
5756         case NL80211_IFTYPE_MESH_POINT:
5757                 break;
5758         default:
5759                 return -EOPNOTSUPP;
5760         }
5761
5762         memset(&params, 0, sizeof(params));
5763
5764         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5765             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5766                 return -EINVAL;
5767
5768         /* only important for AP, IBSS and mesh create IEs internally */
5769         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5770                 return -EINVAL;
5771
5772         params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5773
5774         if (!need_new_beacon)
5775                 goto skip_beacons;
5776
5777         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5778         if (err)
5779                 return err;
5780
5781         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5782                                info->attrs[NL80211_ATTR_CSA_IES],
5783                                nl80211_policy);
5784         if (err)
5785                 return err;
5786
5787         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5788         if (err)
5789                 return err;
5790
5791         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5792                 return -EINVAL;
5793
5794         params.counter_offset_beacon =
5795                 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5796         if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5797                 return -EINVAL;
5798
5799         /* sanity check - counters should be the same */
5800         if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5801             params.count)
5802                 return -EINVAL;
5803
5804         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5805                 params.counter_offset_presp =
5806                         nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5807                 if (params.counter_offset_presp >=
5808                     params.beacon_csa.probe_resp_len)
5809                         return -EINVAL;
5810
5811                 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5812                     params.count)
5813                         return -EINVAL;
5814         }
5815
5816 skip_beacons:
5817         err = nl80211_parse_chandef(rdev, info, &params.chandef);
5818         if (err)
5819                 return err;
5820
5821         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5822                 return -EINVAL;
5823
5824         if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
5825             dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
5826             dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
5827                 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5828                                                     &params.chandef);
5829                 if (err < 0) {
5830                         return err;
5831                 } else if (err) {
5832                         radar_detect_width = BIT(params.chandef.width);
5833                         params.radar_required = true;
5834                 }
5835         }
5836
5837         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5838                                            params.chandef.chan,
5839                                            CHAN_MODE_SHARED,
5840                                            radar_detect_width);
5841         if (err)
5842                 return err;
5843
5844         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5845                 params.block_tx = true;
5846
5847         wdev_lock(wdev);
5848         err = rdev_channel_switch(rdev, dev, &params);
5849         wdev_unlock(wdev);
5850
5851         return err;
5852 }
5853
5854 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5855                             u32 seq, int flags,
5856                             struct cfg80211_registered_device *rdev,
5857                             struct wireless_dev *wdev,
5858                             struct cfg80211_internal_bss *intbss)
5859 {
5860         struct cfg80211_bss *res = &intbss->pub;
5861         const struct cfg80211_bss_ies *ies;
5862         void *hdr;
5863         struct nlattr *bss;
5864         bool tsf = false;
5865
5866         ASSERT_WDEV_LOCK(wdev);
5867
5868         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5869                              NL80211_CMD_NEW_SCAN_RESULTS);
5870         if (!hdr)
5871                 return -1;
5872
5873         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5874
5875         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5876                 goto nla_put_failure;
5877         if (wdev->netdev &&
5878             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5879                 goto nla_put_failure;
5880         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5881                 goto nla_put_failure;
5882
5883         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5884         if (!bss)
5885                 goto nla_put_failure;
5886         if ((!is_zero_ether_addr(res->bssid) &&
5887              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5888                 goto nla_put_failure;
5889
5890         rcu_read_lock();
5891         ies = rcu_dereference(res->ies);
5892         if (ies) {
5893                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5894                         goto fail_unlock_rcu;
5895                 tsf = true;
5896                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5897                                         ies->len, ies->data))
5898                         goto fail_unlock_rcu;
5899         }
5900         ies = rcu_dereference(res->beacon_ies);
5901         if (ies) {
5902                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5903                         goto fail_unlock_rcu;
5904                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5905                                         ies->len, ies->data))
5906                         goto fail_unlock_rcu;
5907         }
5908         rcu_read_unlock();
5909
5910         if (res->beacon_interval &&
5911             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5912                 goto nla_put_failure;
5913         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5914             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5915             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5916             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5917                         jiffies_to_msecs(jiffies - intbss->ts)))
5918                 goto nla_put_failure;
5919
5920         switch (rdev->wiphy.signal_type) {
5921         case CFG80211_SIGNAL_TYPE_MBM:
5922                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5923                         goto nla_put_failure;
5924                 break;
5925         case CFG80211_SIGNAL_TYPE_UNSPEC:
5926                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5927                         goto nla_put_failure;
5928                 break;
5929         default:
5930                 break;
5931         }
5932
5933         switch (wdev->iftype) {
5934         case NL80211_IFTYPE_P2P_CLIENT:
5935         case NL80211_IFTYPE_STATION:
5936                 if (intbss == wdev->current_bss &&
5937                     nla_put_u32(msg, NL80211_BSS_STATUS,
5938                                 NL80211_BSS_STATUS_ASSOCIATED))
5939                         goto nla_put_failure;
5940                 break;
5941         case NL80211_IFTYPE_ADHOC:
5942                 if (intbss == wdev->current_bss &&
5943                     nla_put_u32(msg, NL80211_BSS_STATUS,
5944                                 NL80211_BSS_STATUS_IBSS_JOINED))
5945                         goto nla_put_failure;
5946                 break;
5947         default:
5948                 break;
5949         }
5950
5951         nla_nest_end(msg, bss);
5952
5953         return genlmsg_end(msg, hdr);
5954
5955  fail_unlock_rcu:
5956         rcu_read_unlock();
5957  nla_put_failure:
5958         genlmsg_cancel(msg, hdr);
5959         return -EMSGSIZE;
5960 }
5961
5962 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5963 {
5964         struct cfg80211_registered_device *rdev;
5965         struct cfg80211_internal_bss *scan;
5966         struct wireless_dev *wdev;
5967         int start = cb->args[2], idx = 0;
5968         int err;
5969
5970         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5971         if (err)
5972                 return err;
5973
5974         wdev_lock(wdev);
5975         spin_lock_bh(&rdev->bss_lock);
5976         cfg80211_bss_expire(rdev);
5977
5978         cb->seq = rdev->bss_generation;
5979
5980         list_for_each_entry(scan, &rdev->bss_list, list) {
5981                 if (++idx <= start)
5982                         continue;
5983                 if (nl80211_send_bss(skb, cb,
5984                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5985                                 rdev, wdev, scan) < 0) {
5986                         idx--;
5987                         break;
5988                 }
5989         }
5990
5991         spin_unlock_bh(&rdev->bss_lock);
5992         wdev_unlock(wdev);
5993
5994         cb->args[2] = idx;
5995         nl80211_finish_wdev_dump(rdev);
5996
5997         return skb->len;
5998 }
5999
6000 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6001                                 int flags, struct net_device *dev,
6002                                 struct survey_info *survey)
6003 {
6004         void *hdr;
6005         struct nlattr *infoattr;
6006
6007         hdr = nl80211hdr_put(msg, portid, seq, flags,
6008                              NL80211_CMD_NEW_SURVEY_RESULTS);
6009         if (!hdr)
6010                 return -ENOMEM;
6011
6012         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6013                 goto nla_put_failure;
6014
6015         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6016         if (!infoattr)
6017                 goto nla_put_failure;
6018
6019         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6020                         survey->channel->center_freq))
6021                 goto nla_put_failure;
6022
6023         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6024             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6025                 goto nla_put_failure;
6026         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6027             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6028                 goto nla_put_failure;
6029         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6030             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6031                         survey->channel_time))
6032                 goto nla_put_failure;
6033         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6034             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6035                         survey->channel_time_busy))
6036                 goto nla_put_failure;
6037         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6038             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6039                         survey->channel_time_ext_busy))
6040                 goto nla_put_failure;
6041         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6042             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6043                         survey->channel_time_rx))
6044                 goto nla_put_failure;
6045         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6046             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6047                         survey->channel_time_tx))
6048                 goto nla_put_failure;
6049
6050         nla_nest_end(msg, infoattr);
6051
6052         return genlmsg_end(msg, hdr);
6053
6054  nla_put_failure:
6055         genlmsg_cancel(msg, hdr);
6056         return -EMSGSIZE;
6057 }
6058
6059 static int nl80211_dump_survey(struct sk_buff *skb,
6060                         struct netlink_callback *cb)
6061 {
6062         struct survey_info survey;
6063         struct cfg80211_registered_device *dev;
6064         struct wireless_dev *wdev;
6065         int survey_idx = cb->args[2];
6066         int res;
6067
6068         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6069         if (res)
6070                 return res;
6071
6072         if (!wdev->netdev) {
6073                 res = -EINVAL;
6074                 goto out_err;
6075         }
6076
6077         if (!dev->ops->dump_survey) {
6078                 res = -EOPNOTSUPP;
6079                 goto out_err;
6080         }
6081
6082         while (1) {
6083                 struct ieee80211_channel *chan;
6084
6085                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6086                 if (res == -ENOENT)
6087                         break;
6088                 if (res)
6089                         goto out_err;
6090
6091                 /* Survey without a channel doesn't make sense */
6092                 if (!survey.channel) {
6093                         res = -EINVAL;
6094                         goto out;
6095                 }
6096
6097                 chan = ieee80211_get_channel(&dev->wiphy,
6098                                              survey.channel->center_freq);
6099                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6100                         survey_idx++;
6101                         continue;
6102                 }
6103
6104                 if (nl80211_send_survey(skb,
6105                                 NETLINK_CB(cb->skb).portid,
6106                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6107                                 wdev->netdev, &survey) < 0)
6108                         goto out;
6109                 survey_idx++;
6110         }
6111
6112  out:
6113         cb->args[2] = survey_idx;
6114         res = skb->len;
6115  out_err:
6116         nl80211_finish_wdev_dump(dev);
6117         return res;
6118 }
6119
6120 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6121 {
6122         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6123                                   NL80211_WPA_VERSION_2));
6124 }
6125
6126 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6127 {
6128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6129         struct net_device *dev = info->user_ptr[1];
6130         struct ieee80211_channel *chan;
6131         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6132         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6133         enum nl80211_auth_type auth_type;
6134         struct key_parse key;
6135         bool local_state_change;
6136
6137         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6138                 return -EINVAL;
6139
6140         if (!info->attrs[NL80211_ATTR_MAC])
6141                 return -EINVAL;
6142
6143         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6144                 return -EINVAL;
6145
6146         if (!info->attrs[NL80211_ATTR_SSID])
6147                 return -EINVAL;
6148
6149         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6150                 return -EINVAL;
6151
6152         err = nl80211_parse_key(info, &key);
6153         if (err)
6154                 return err;
6155
6156         if (key.idx >= 0) {
6157                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6158                         return -EINVAL;
6159                 if (!key.p.key || !key.p.key_len)
6160                         return -EINVAL;
6161                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6162                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6163                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6164                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6165                         return -EINVAL;
6166                 if (key.idx > 4)
6167                         return -EINVAL;
6168         } else {
6169                 key.p.key_len = 0;
6170                 key.p.key = NULL;
6171         }
6172
6173         if (key.idx >= 0) {
6174                 int i;
6175                 bool ok = false;
6176                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6177                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6178                                 ok = true;
6179                                 break;
6180                         }
6181                 }
6182                 if (!ok)
6183                         return -EINVAL;
6184         }
6185
6186         if (!rdev->ops->auth)
6187                 return -EOPNOTSUPP;
6188
6189         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6190             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6191                 return -EOPNOTSUPP;
6192
6193         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6194         chan = ieee80211_get_channel(&rdev->wiphy,
6195                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6196         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6197                 return -EINVAL;
6198
6199         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6200         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6201
6202         if (info->attrs[NL80211_ATTR_IE]) {
6203                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6204                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6205         }
6206
6207         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6208         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6209                 return -EINVAL;
6210
6211         if (auth_type == NL80211_AUTHTYPE_SAE &&
6212             !info->attrs[NL80211_ATTR_SAE_DATA])
6213                 return -EINVAL;
6214
6215         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6216                 if (auth_type != NL80211_AUTHTYPE_SAE)
6217                         return -EINVAL;
6218                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6219                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6220                 /* need to include at least Auth Transaction and Status Code */
6221                 if (sae_data_len < 4)
6222                         return -EINVAL;
6223         }
6224
6225         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6226
6227         /*
6228          * Since we no longer track auth state, ignore
6229          * requests to only change local state.
6230          */
6231         if (local_state_change)
6232                 return 0;
6233
6234         wdev_lock(dev->ieee80211_ptr);
6235         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6236                                  ssid, ssid_len, ie, ie_len,
6237                                  key.p.key, key.p.key_len, key.idx,
6238                                  sae_data, sae_data_len);
6239         wdev_unlock(dev->ieee80211_ptr);
6240         return err;
6241 }
6242
6243 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6244                                    struct genl_info *info,
6245                                    struct cfg80211_crypto_settings *settings,
6246                                    int cipher_limit)
6247 {
6248         memset(settings, 0, sizeof(*settings));
6249
6250         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6251
6252         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6253                 u16 proto;
6254                 proto = nla_get_u16(
6255                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6256                 settings->control_port_ethertype = cpu_to_be16(proto);
6257                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6258                     proto != ETH_P_PAE)
6259                         return -EINVAL;
6260                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6261                         settings->control_port_no_encrypt = true;
6262         } else
6263                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6264
6265         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6266                 void *data;
6267                 int len, i;
6268
6269                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6270                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6271                 settings->n_ciphers_pairwise = len / sizeof(u32);
6272
6273                 if (len % sizeof(u32))
6274                         return -EINVAL;
6275
6276                 if (settings->n_ciphers_pairwise > cipher_limit)
6277                         return -EINVAL;
6278
6279                 memcpy(settings->ciphers_pairwise, data, len);
6280
6281                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6282                         if (!cfg80211_supported_cipher_suite(
6283                                         &rdev->wiphy,
6284                                         settings->ciphers_pairwise[i]))
6285                                 return -EINVAL;
6286         }
6287
6288         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6289                 settings->cipher_group =
6290                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6291                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6292                                                      settings->cipher_group))
6293                         return -EINVAL;
6294         }
6295
6296         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6297                 settings->wpa_versions =
6298                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6299                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6300                         return -EINVAL;
6301         }
6302
6303         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6304                 void *data;
6305                 int len;
6306
6307                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6308                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6309                 settings->n_akm_suites = len / sizeof(u32);
6310
6311                 if (len % sizeof(u32))
6312                         return -EINVAL;
6313
6314                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6315                         return -EINVAL;
6316
6317                 memcpy(settings->akm_suites, data, len);
6318         }
6319
6320         return 0;
6321 }
6322
6323 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6324 {
6325         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6326         struct net_device *dev = info->user_ptr[1];
6327         struct ieee80211_channel *chan;
6328         struct cfg80211_assoc_request req = {};
6329         const u8 *bssid, *ssid;
6330         int err, ssid_len = 0;
6331
6332         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6333                 return -EINVAL;
6334
6335         if (!info->attrs[NL80211_ATTR_MAC] ||
6336             !info->attrs[NL80211_ATTR_SSID] ||
6337             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6338                 return -EINVAL;
6339
6340         if (!rdev->ops->assoc)
6341                 return -EOPNOTSUPP;
6342
6343         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6344             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6345                 return -EOPNOTSUPP;
6346
6347         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6348
6349         chan = ieee80211_get_channel(&rdev->wiphy,
6350                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6351         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6352                 return -EINVAL;
6353
6354         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6355         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6356
6357         if (info->attrs[NL80211_ATTR_IE]) {
6358                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6359                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6360         }
6361
6362         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6363                 enum nl80211_mfp mfp =
6364                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6365                 if (mfp == NL80211_MFP_REQUIRED)
6366                         req.use_mfp = true;
6367                 else if (mfp != NL80211_MFP_NO)
6368                         return -EINVAL;
6369         }
6370
6371         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6372                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6373
6374         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6375                 req.flags |= ASSOC_REQ_DISABLE_HT;
6376
6377         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6378                 memcpy(&req.ht_capa_mask,
6379                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6380                        sizeof(req.ht_capa_mask));
6381
6382         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6383                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6384                         return -EINVAL;
6385                 memcpy(&req.ht_capa,
6386                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6387                        sizeof(req.ht_capa));
6388         }
6389
6390         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6391                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6392
6393         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6394                 memcpy(&req.vht_capa_mask,
6395                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6396                        sizeof(req.vht_capa_mask));
6397
6398         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6399                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6400                         return -EINVAL;
6401                 memcpy(&req.vht_capa,
6402                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6403                        sizeof(req.vht_capa));
6404         }
6405
6406         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6407         if (!err) {
6408                 wdev_lock(dev->ieee80211_ptr);
6409                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6410                                           ssid, ssid_len, &req);
6411                 wdev_unlock(dev->ieee80211_ptr);
6412         }
6413
6414         return err;
6415 }
6416
6417 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6418 {
6419         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6420         struct net_device *dev = info->user_ptr[1];
6421         const u8 *ie = NULL, *bssid;
6422         int ie_len = 0, err;
6423         u16 reason_code;
6424         bool local_state_change;
6425
6426         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6427                 return -EINVAL;
6428
6429         if (!info->attrs[NL80211_ATTR_MAC])
6430                 return -EINVAL;
6431
6432         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6433                 return -EINVAL;
6434
6435         if (!rdev->ops->deauth)
6436                 return -EOPNOTSUPP;
6437
6438         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6439             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6440                 return -EOPNOTSUPP;
6441
6442         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6443
6444         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6445         if (reason_code == 0) {
6446                 /* Reason Code 0 is reserved */
6447                 return -EINVAL;
6448         }
6449
6450         if (info->attrs[NL80211_ATTR_IE]) {
6451                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6452                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6453         }
6454
6455         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6456
6457         wdev_lock(dev->ieee80211_ptr);
6458         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6459                                    local_state_change);
6460         wdev_unlock(dev->ieee80211_ptr);
6461         return err;
6462 }
6463
6464 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6465 {
6466         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6467         struct net_device *dev = info->user_ptr[1];
6468         const u8 *ie = NULL, *bssid;
6469         int ie_len = 0, err;
6470         u16 reason_code;
6471         bool local_state_change;
6472
6473         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6474                 return -EINVAL;
6475
6476         if (!info->attrs[NL80211_ATTR_MAC])
6477                 return -EINVAL;
6478
6479         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6480                 return -EINVAL;
6481
6482         if (!rdev->ops->disassoc)
6483                 return -EOPNOTSUPP;
6484
6485         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6486             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6487                 return -EOPNOTSUPP;
6488
6489         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6490
6491         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6492         if (reason_code == 0) {
6493                 /* Reason Code 0 is reserved */
6494                 return -EINVAL;
6495         }
6496
6497         if (info->attrs[NL80211_ATTR_IE]) {
6498                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6499                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6500         }
6501
6502         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6503
6504         wdev_lock(dev->ieee80211_ptr);
6505         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6506                                      local_state_change);
6507         wdev_unlock(dev->ieee80211_ptr);
6508         return err;
6509 }
6510
6511 static bool
6512 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6513                          int mcast_rate[IEEE80211_NUM_BANDS],
6514                          int rateval)
6515 {
6516         struct wiphy *wiphy = &rdev->wiphy;
6517         bool found = false;
6518         int band, i;
6519
6520         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6521                 struct ieee80211_supported_band *sband;
6522
6523                 sband = wiphy->bands[band];
6524                 if (!sband)
6525                         continue;
6526
6527                 for (i = 0; i < sband->n_bitrates; i++) {
6528                         if (sband->bitrates[i].bitrate == rateval) {
6529                                 mcast_rate[band] = i + 1;
6530                                 found = true;
6531                                 break;
6532                         }
6533                 }
6534         }
6535
6536         return found;
6537 }
6538
6539 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6540 {
6541         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6542         struct net_device *dev = info->user_ptr[1];
6543         struct cfg80211_ibss_params ibss;
6544         struct wiphy *wiphy;
6545         struct cfg80211_cached_keys *connkeys = NULL;
6546         int err;
6547
6548         memset(&ibss, 0, sizeof(ibss));
6549
6550         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6551                 return -EINVAL;
6552
6553         if (!info->attrs[NL80211_ATTR_SSID] ||
6554             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6555                 return -EINVAL;
6556
6557         ibss.beacon_interval = 100;
6558
6559         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6560                 ibss.beacon_interval =
6561                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6562                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6563                         return -EINVAL;
6564         }
6565
6566         if (!rdev->ops->join_ibss)
6567                 return -EOPNOTSUPP;
6568
6569         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6570                 return -EOPNOTSUPP;
6571
6572         wiphy = &rdev->wiphy;
6573
6574         if (info->attrs[NL80211_ATTR_MAC]) {
6575                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6576
6577                 if (!is_valid_ether_addr(ibss.bssid))
6578                         return -EINVAL;
6579         }
6580         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6581         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6582
6583         if (info->attrs[NL80211_ATTR_IE]) {
6584                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6585                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6586         }
6587
6588         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6589         if (err)
6590                 return err;
6591
6592         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6593                 return -EINVAL;
6594
6595         switch (ibss.chandef.width) {
6596         case NL80211_CHAN_WIDTH_5:
6597         case NL80211_CHAN_WIDTH_10:
6598         case NL80211_CHAN_WIDTH_20_NOHT:
6599                 break;
6600         case NL80211_CHAN_WIDTH_20:
6601         case NL80211_CHAN_WIDTH_40:
6602                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6603                         break;
6604         default:
6605                 return -EINVAL;
6606         }
6607
6608         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6609         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6610
6611         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6612                 u8 *rates =
6613                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6614                 int n_rates =
6615                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6616                 struct ieee80211_supported_band *sband =
6617                         wiphy->bands[ibss.chandef.chan->band];
6618
6619                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6620                                              &ibss.basic_rates);
6621                 if (err)
6622                         return err;
6623         }
6624
6625         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6626                 memcpy(&ibss.ht_capa_mask,
6627                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6628                        sizeof(ibss.ht_capa_mask));
6629
6630         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6631                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6632                         return -EINVAL;
6633                 memcpy(&ibss.ht_capa,
6634                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6635                        sizeof(ibss.ht_capa));
6636         }
6637
6638         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6639             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6640                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6641                 return -EINVAL;
6642
6643         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6644                 bool no_ht = false;
6645
6646                 connkeys = nl80211_parse_connkeys(rdev,
6647                                           info->attrs[NL80211_ATTR_KEYS],
6648                                           &no_ht);
6649                 if (IS_ERR(connkeys))
6650                         return PTR_ERR(connkeys);
6651
6652                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6653                     no_ht) {
6654                         kfree(connkeys);
6655                         return -EINVAL;
6656                 }
6657         }
6658
6659         ibss.control_port =
6660                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6661
6662         ibss.userspace_handles_dfs =
6663                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6664
6665         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6666         if (err)
6667                 kfree(connkeys);
6668         return err;
6669 }
6670
6671 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6672 {
6673         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6674         struct net_device *dev = info->user_ptr[1];
6675
6676         if (!rdev->ops->leave_ibss)
6677                 return -EOPNOTSUPP;
6678
6679         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6680                 return -EOPNOTSUPP;
6681
6682         return cfg80211_leave_ibss(rdev, dev, false);
6683 }
6684
6685 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6686 {
6687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6688         struct net_device *dev = info->user_ptr[1];
6689         int mcast_rate[IEEE80211_NUM_BANDS];
6690         u32 nla_rate;
6691         int err;
6692
6693         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6694             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6695                 return -EOPNOTSUPP;
6696
6697         if (!rdev->ops->set_mcast_rate)
6698                 return -EOPNOTSUPP;
6699
6700         memset(mcast_rate, 0, sizeof(mcast_rate));
6701
6702         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6703                 return -EINVAL;
6704
6705         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6706         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6707                 return -EINVAL;
6708
6709         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6710
6711         return err;
6712 }
6713
6714 static struct sk_buff *
6715 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
6716                             int approxlen, u32 portid, u32 seq,
6717                             enum nl80211_commands cmd,
6718                             enum nl80211_attrs attr,
6719                             const struct nl80211_vendor_cmd_info *info,
6720                             gfp_t gfp)
6721 {
6722         struct sk_buff *skb;
6723         void *hdr;
6724         struct nlattr *data;
6725
6726         skb = nlmsg_new(approxlen + 100, gfp);
6727         if (!skb)
6728                 return NULL;
6729
6730         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
6731         if (!hdr) {
6732                 kfree_skb(skb);
6733                 return NULL;
6734         }
6735
6736         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6737                 goto nla_put_failure;
6738
6739         if (info) {
6740                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
6741                                 info->vendor_id))
6742                         goto nla_put_failure;
6743                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
6744                                 info->subcmd))
6745                         goto nla_put_failure;
6746         }
6747
6748         data = nla_nest_start(skb, attr);
6749
6750         ((void **)skb->cb)[0] = rdev;
6751         ((void **)skb->cb)[1] = hdr;
6752         ((void **)skb->cb)[2] = data;
6753
6754         return skb;
6755
6756  nla_put_failure:
6757         kfree_skb(skb);
6758         return NULL;
6759 }
6760
6761 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
6762                                            enum nl80211_commands cmd,
6763                                            enum nl80211_attrs attr,
6764                                            int vendor_event_idx,
6765                                            int approxlen, gfp_t gfp)
6766 {
6767         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6768         const struct nl80211_vendor_cmd_info *info;
6769
6770         switch (cmd) {
6771         case NL80211_CMD_TESTMODE:
6772                 if (WARN_ON(vendor_event_idx != -1))
6773                         return NULL;
6774                 info = NULL;
6775                 break;
6776         case NL80211_CMD_VENDOR:
6777                 if (WARN_ON(vendor_event_idx < 0 ||
6778                             vendor_event_idx >= wiphy->n_vendor_events))
6779                         return NULL;
6780                 info = &wiphy->vendor_events[vendor_event_idx];
6781                 break;
6782         default:
6783                 WARN_ON(1);
6784                 return NULL;
6785         }
6786
6787         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
6788                                            cmd, attr, info, gfp);
6789 }
6790 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
6791
6792 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
6793 {
6794         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6795         void *hdr = ((void **)skb->cb)[1];
6796         struct nlattr *data = ((void **)skb->cb)[2];
6797         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
6798
6799         nla_nest_end(skb, data);
6800         genlmsg_end(skb, hdr);
6801
6802         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
6803                 mcgrp = NL80211_MCGRP_VENDOR;
6804
6805         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
6806                                 mcgrp, gfp);
6807 }
6808 EXPORT_SYMBOL(__cfg80211_send_event_skb);
6809
6810 #ifdef CONFIG_NL80211_TESTMODE
6811 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6812 {
6813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6814         struct wireless_dev *wdev =
6815                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6816         int err;
6817
6818         if (!rdev->ops->testmode_cmd)
6819                 return -EOPNOTSUPP;
6820
6821         if (IS_ERR(wdev)) {
6822                 err = PTR_ERR(wdev);
6823                 if (err != -EINVAL)
6824                         return err;
6825                 wdev = NULL;
6826         } else if (wdev->wiphy != &rdev->wiphy) {
6827                 return -EINVAL;
6828         }
6829
6830         if (!info->attrs[NL80211_ATTR_TESTDATA])
6831                 return -EINVAL;
6832
6833         rdev->cur_cmd_info = info;
6834         err = rdev_testmode_cmd(rdev, wdev,
6835                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6836                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6837         rdev->cur_cmd_info = NULL;
6838
6839         return err;
6840 }
6841
6842 static int nl80211_testmode_dump(struct sk_buff *skb,
6843                                  struct netlink_callback *cb)
6844 {
6845         struct cfg80211_registered_device *rdev;
6846         int err;
6847         long phy_idx;
6848         void *data = NULL;
6849         int data_len = 0;
6850
6851         rtnl_lock();
6852
6853         if (cb->args[0]) {
6854                 /*
6855                  * 0 is a valid index, but not valid for args[0],
6856                  * so we need to offset by 1.
6857                  */
6858                 phy_idx = cb->args[0] - 1;
6859         } else {
6860                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6861                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6862                                   nl80211_policy);
6863                 if (err)
6864                         goto out_err;
6865
6866                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6867                                                   nl80211_fam.attrbuf);
6868                 if (IS_ERR(rdev)) {
6869                         err = PTR_ERR(rdev);
6870                         goto out_err;
6871                 }
6872                 phy_idx = rdev->wiphy_idx;
6873                 rdev = NULL;
6874
6875                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6876                         cb->args[1] =
6877                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6878         }
6879
6880         if (cb->args[1]) {
6881                 data = nla_data((void *)cb->args[1]);
6882                 data_len = nla_len((void *)cb->args[1]);
6883         }
6884
6885         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6886         if (!rdev) {
6887                 err = -ENOENT;
6888                 goto out_err;
6889         }
6890
6891         if (!rdev->ops->testmode_dump) {
6892                 err = -EOPNOTSUPP;
6893                 goto out_err;
6894         }
6895
6896         while (1) {
6897                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6898                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6899                                            NL80211_CMD_TESTMODE);
6900                 struct nlattr *tmdata;
6901
6902                 if (!hdr)
6903                         break;
6904
6905                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6906                         genlmsg_cancel(skb, hdr);
6907                         break;
6908                 }
6909
6910                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6911                 if (!tmdata) {
6912                         genlmsg_cancel(skb, hdr);
6913                         break;
6914                 }
6915                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6916                 nla_nest_end(skb, tmdata);
6917
6918                 if (err == -ENOBUFS || err == -ENOENT) {
6919                         genlmsg_cancel(skb, hdr);
6920                         break;
6921                 } else if (err) {
6922                         genlmsg_cancel(skb, hdr);
6923                         goto out_err;
6924                 }
6925
6926                 genlmsg_end(skb, hdr);
6927         }
6928
6929         err = skb->len;
6930         /* see above */
6931         cb->args[0] = phy_idx + 1;
6932  out_err:
6933         rtnl_unlock();
6934         return err;
6935 }
6936 #endif
6937
6938 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6939 {
6940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6941         struct net_device *dev = info->user_ptr[1];
6942         struct cfg80211_connect_params connect;
6943         struct wiphy *wiphy;
6944         struct cfg80211_cached_keys *connkeys = NULL;
6945         int err;
6946
6947         memset(&connect, 0, sizeof(connect));
6948
6949         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6950                 return -EINVAL;
6951
6952         if (!info->attrs[NL80211_ATTR_SSID] ||
6953             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6954                 return -EINVAL;
6955
6956         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6957                 connect.auth_type =
6958                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6959                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6960                                              NL80211_CMD_CONNECT))
6961                         return -EINVAL;
6962         } else
6963                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6964
6965         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6966
6967         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6968                                       NL80211_MAX_NR_CIPHER_SUITES);
6969         if (err)
6970                 return err;
6971
6972         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6973             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6974                 return -EOPNOTSUPP;
6975
6976         wiphy = &rdev->wiphy;
6977
6978         connect.bg_scan_period = -1;
6979         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6980                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6981                 connect.bg_scan_period =
6982                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6983         }
6984
6985         if (info->attrs[NL80211_ATTR_MAC])
6986                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6987         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6988         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6989
6990         if (info->attrs[NL80211_ATTR_IE]) {
6991                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6992                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6993         }
6994
6995         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6996                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6997                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6998                     connect.mfp != NL80211_MFP_NO)
6999                         return -EINVAL;
7000         } else {
7001                 connect.mfp = NL80211_MFP_NO;
7002         }
7003
7004         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7005                 connect.channel =
7006                         ieee80211_get_channel(wiphy,
7007                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
7008                 if (!connect.channel ||
7009                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
7010                         return -EINVAL;
7011         }
7012
7013         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7014                 connkeys = nl80211_parse_connkeys(rdev,
7015                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7016                 if (IS_ERR(connkeys))
7017                         return PTR_ERR(connkeys);
7018         }
7019
7020         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7021                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7022
7023         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7024                 memcpy(&connect.ht_capa_mask,
7025                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7026                        sizeof(connect.ht_capa_mask));
7027
7028         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7029                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7030                         kfree(connkeys);
7031                         return -EINVAL;
7032                 }
7033                 memcpy(&connect.ht_capa,
7034                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7035                        sizeof(connect.ht_capa));
7036         }
7037
7038         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7039                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7040
7041         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7042                 memcpy(&connect.vht_capa_mask,
7043                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7044                        sizeof(connect.vht_capa_mask));
7045
7046         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7047                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7048                         kfree(connkeys);
7049                         return -EINVAL;
7050                 }
7051                 memcpy(&connect.vht_capa,
7052                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7053                        sizeof(connect.vht_capa));
7054         }
7055
7056         wdev_lock(dev->ieee80211_ptr);
7057         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7058         wdev_unlock(dev->ieee80211_ptr);
7059         if (err)
7060                 kfree(connkeys);
7061         return err;
7062 }
7063
7064 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7065 {
7066         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7067         struct net_device *dev = info->user_ptr[1];
7068         u16 reason;
7069         int ret;
7070
7071         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7072                 reason = WLAN_REASON_DEAUTH_LEAVING;
7073         else
7074                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7075
7076         if (reason == 0)
7077                 return -EINVAL;
7078
7079         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7080             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7081                 return -EOPNOTSUPP;
7082
7083         wdev_lock(dev->ieee80211_ptr);
7084         ret = cfg80211_disconnect(rdev, dev, reason, true);
7085         wdev_unlock(dev->ieee80211_ptr);
7086         return ret;
7087 }
7088
7089 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7090 {
7091         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7092         struct net *net;
7093         int err;
7094         u32 pid;
7095
7096         if (!info->attrs[NL80211_ATTR_PID])
7097                 return -EINVAL;
7098
7099         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7100
7101         net = get_net_ns_by_pid(pid);
7102         if (IS_ERR(net))
7103                 return PTR_ERR(net);
7104
7105         err = 0;
7106
7107         /* check if anything to do */
7108         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7109                 err = cfg80211_switch_netns(rdev, net);
7110
7111         put_net(net);
7112         return err;
7113 }
7114
7115 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7116 {
7117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7118         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7119                         struct cfg80211_pmksa *pmksa) = NULL;
7120         struct net_device *dev = info->user_ptr[1];
7121         struct cfg80211_pmksa pmksa;
7122
7123         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7124
7125         if (!info->attrs[NL80211_ATTR_MAC])
7126                 return -EINVAL;
7127
7128         if (!info->attrs[NL80211_ATTR_PMKID])
7129                 return -EINVAL;
7130
7131         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7132         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7133
7134         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7135             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7136                 return -EOPNOTSUPP;
7137
7138         switch (info->genlhdr->cmd) {
7139         case NL80211_CMD_SET_PMKSA:
7140                 rdev_ops = rdev->ops->set_pmksa;
7141                 break;
7142         case NL80211_CMD_DEL_PMKSA:
7143                 rdev_ops = rdev->ops->del_pmksa;
7144                 break;
7145         default:
7146                 WARN_ON(1);
7147                 break;
7148         }
7149
7150         if (!rdev_ops)
7151                 return -EOPNOTSUPP;
7152
7153         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7154 }
7155
7156 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7157 {
7158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7159         struct net_device *dev = info->user_ptr[1];
7160
7161         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7162             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7163                 return -EOPNOTSUPP;
7164
7165         if (!rdev->ops->flush_pmksa)
7166                 return -EOPNOTSUPP;
7167
7168         return rdev_flush_pmksa(rdev, dev);
7169 }
7170
7171 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7172 {
7173         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7174         struct net_device *dev = info->user_ptr[1];
7175         u8 action_code, dialog_token;
7176         u16 status_code;
7177         u8 *peer;
7178
7179         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7180             !rdev->ops->tdls_mgmt)
7181                 return -EOPNOTSUPP;
7182
7183         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7184             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7185             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7186             !info->attrs[NL80211_ATTR_IE] ||
7187             !info->attrs[NL80211_ATTR_MAC])
7188                 return -EINVAL;
7189
7190         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7191         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7192         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7193         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7194
7195         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7196                               dialog_token, status_code,
7197                               nla_data(info->attrs[NL80211_ATTR_IE]),
7198                               nla_len(info->attrs[NL80211_ATTR_IE]));
7199 }
7200
7201 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7202 {
7203         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7204         struct net_device *dev = info->user_ptr[1];
7205         enum nl80211_tdls_operation operation;
7206         u8 *peer;
7207
7208         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7209             !rdev->ops->tdls_oper)
7210                 return -EOPNOTSUPP;
7211
7212         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7213             !info->attrs[NL80211_ATTR_MAC])
7214                 return -EINVAL;
7215
7216         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7217         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7218
7219         return rdev_tdls_oper(rdev, dev, peer, operation);
7220 }
7221
7222 static int nl80211_remain_on_channel(struct sk_buff *skb,
7223                                      struct genl_info *info)
7224 {
7225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7226         struct wireless_dev *wdev = info->user_ptr[1];
7227         struct cfg80211_chan_def chandef;
7228         struct sk_buff *msg;
7229         void *hdr;
7230         u64 cookie;
7231         u32 duration;
7232         int err;
7233
7234         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7235             !info->attrs[NL80211_ATTR_DURATION])
7236                 return -EINVAL;
7237
7238         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7239
7240         if (!rdev->ops->remain_on_channel ||
7241             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7242                 return -EOPNOTSUPP;
7243
7244         /*
7245          * We should be on that channel for at least a minimum amount of
7246          * time (10ms) but no longer than the driver supports.
7247          */
7248         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7249             duration > rdev->wiphy.max_remain_on_channel_duration)
7250                 return -EINVAL;
7251
7252         err = nl80211_parse_chandef(rdev, info, &chandef);
7253         if (err)
7254                 return err;
7255
7256         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7257         if (!msg)
7258                 return -ENOMEM;
7259
7260         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7261                              NL80211_CMD_REMAIN_ON_CHANNEL);
7262         if (!hdr) {
7263                 err = -ENOBUFS;
7264                 goto free_msg;
7265         }
7266
7267         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7268                                      duration, &cookie);
7269
7270         if (err)
7271                 goto free_msg;
7272
7273         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7274                 goto nla_put_failure;
7275
7276         genlmsg_end(msg, hdr);
7277
7278         return genlmsg_reply(msg, info);
7279
7280  nla_put_failure:
7281         err = -ENOBUFS;
7282  free_msg:
7283         nlmsg_free(msg);
7284         return err;
7285 }
7286
7287 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7288                                             struct genl_info *info)
7289 {
7290         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7291         struct wireless_dev *wdev = info->user_ptr[1];
7292         u64 cookie;
7293
7294         if (!info->attrs[NL80211_ATTR_COOKIE])
7295                 return -EINVAL;
7296
7297         if (!rdev->ops->cancel_remain_on_channel)
7298                 return -EOPNOTSUPP;
7299
7300         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7301
7302         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7303 }
7304
7305 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7306                            u8 *rates, u8 rates_len)
7307 {
7308         u8 i;
7309         u32 mask = 0;
7310
7311         for (i = 0; i < rates_len; i++) {
7312                 int rate = (rates[i] & 0x7f) * 5;
7313                 int ridx;
7314                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7315                         struct ieee80211_rate *srate =
7316                                 &sband->bitrates[ridx];
7317                         if (rate == srate->bitrate) {
7318                                 mask |= 1 << ridx;
7319                                 break;
7320                         }
7321                 }
7322                 if (ridx == sband->n_bitrates)
7323                         return 0; /* rate not found */
7324         }
7325
7326         return mask;
7327 }
7328
7329 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7330                                u8 *rates, u8 rates_len,
7331                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7332 {
7333         u8 i;
7334
7335         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7336
7337         for (i = 0; i < rates_len; i++) {
7338                 int ridx, rbit;
7339
7340                 ridx = rates[i] / 8;
7341                 rbit = BIT(rates[i] % 8);
7342
7343                 /* check validity */
7344                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7345                         return false;
7346
7347                 /* check availability */
7348                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7349                         mcs[ridx] |= rbit;
7350                 else
7351                         return false;
7352         }
7353
7354         return true;
7355 }
7356
7357 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7358 {
7359         u16 mcs_mask = 0;
7360
7361         switch (vht_mcs_map) {
7362         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7363                 break;
7364         case IEEE80211_VHT_MCS_SUPPORT_0_7:
7365                 mcs_mask = 0x00FF;
7366                 break;
7367         case IEEE80211_VHT_MCS_SUPPORT_0_8:
7368                 mcs_mask = 0x01FF;
7369                 break;
7370         case IEEE80211_VHT_MCS_SUPPORT_0_9:
7371                 mcs_mask = 0x03FF;
7372                 break;
7373         default:
7374                 break;
7375         }
7376
7377         return mcs_mask;
7378 }
7379
7380 static void vht_build_mcs_mask(u16 vht_mcs_map,
7381                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7382 {
7383         u8 nss;
7384
7385         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7386                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7387                 vht_mcs_map >>= 2;
7388         }
7389 }
7390
7391 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7392                              struct nl80211_txrate_vht *txrate,
7393                              u16 mcs[NL80211_VHT_NSS_MAX])
7394 {
7395         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7396         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7397         u8 i;
7398
7399         if (!sband->vht_cap.vht_supported)
7400                 return false;
7401
7402         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7403
7404         /* Build vht_mcs_mask from VHT capabilities */
7405         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7406
7407         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7408                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7409                         mcs[i] = txrate->mcs[i];
7410                 else
7411                         return false;
7412         }
7413
7414         return true;
7415 }
7416
7417 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7418         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7419                                     .len = NL80211_MAX_SUPP_RATES },
7420         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7421                                 .len = NL80211_MAX_SUPP_HT_RATES },
7422         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7423 };
7424
7425 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7426                                        struct genl_info *info)
7427 {
7428         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7430         struct cfg80211_bitrate_mask mask;
7431         int rem, i;
7432         struct net_device *dev = info->user_ptr[1];
7433         struct nlattr *tx_rates;
7434         struct ieee80211_supported_band *sband;
7435         u16 vht_tx_mcs_map;
7436
7437         if (!rdev->ops->set_bitrate_mask)
7438                 return -EOPNOTSUPP;
7439
7440         memset(&mask, 0, sizeof(mask));
7441         /* Default to all rates enabled */
7442         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7443                 sband = rdev->wiphy.bands[i];
7444
7445                 if (!sband)
7446                         continue;
7447
7448                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7449                 memcpy(mask.control[i].ht_mcs,
7450                        sband->ht_cap.mcs.rx_mask,
7451                        sizeof(mask.control[i].ht_mcs));
7452
7453                 if (!sband->vht_cap.vht_supported)
7454                         continue;
7455
7456                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7457                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7458         }
7459
7460         /* if no rates are given set it back to the defaults */
7461         if (!info->attrs[NL80211_ATTR_TX_RATES])
7462                 goto out;
7463
7464         /*
7465          * The nested attribute uses enum nl80211_band as the index. This maps
7466          * directly to the enum ieee80211_band values used in cfg80211.
7467          */
7468         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7469         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7470         {
7471                 enum ieee80211_band band = nla_type(tx_rates);
7472                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7473                         return -EINVAL;
7474                 sband = rdev->wiphy.bands[band];
7475                 if (sband == NULL)
7476                         return -EINVAL;
7477                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7478                           nla_len(tx_rates), nl80211_txattr_policy);
7479                 if (tb[NL80211_TXRATE_LEGACY]) {
7480                         mask.control[band].legacy = rateset_to_mask(
7481                                 sband,
7482                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7483                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7484                         if ((mask.control[band].legacy == 0) &&
7485                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7486                                 return -EINVAL;
7487                 }
7488                 if (tb[NL80211_TXRATE_HT]) {
7489                         if (!ht_rateset_to_mask(
7490                                         sband,
7491                                         nla_data(tb[NL80211_TXRATE_HT]),
7492                                         nla_len(tb[NL80211_TXRATE_HT]),
7493                                         mask.control[band].ht_mcs))
7494                                 return -EINVAL;
7495                 }
7496                 if (tb[NL80211_TXRATE_VHT]) {
7497                         if (!vht_set_mcs_mask(
7498                                         sband,
7499                                         nla_data(tb[NL80211_TXRATE_VHT]),
7500                                         mask.control[band].vht_mcs))
7501                                 return -EINVAL;
7502                 }
7503
7504                 if (mask.control[band].legacy == 0) {
7505                         /* don't allow empty legacy rates if HT or VHT
7506                          * are not even supported.
7507                          */
7508                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7509                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
7510                                 return -EINVAL;
7511
7512                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7513                                 if (mask.control[band].ht_mcs[i])
7514                                         goto out;
7515
7516                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7517                                 if (mask.control[band].vht_mcs[i])
7518                                         goto out;
7519
7520                         /* legacy and mcs rates may not be both empty */
7521                         return -EINVAL;
7522                 }
7523         }
7524
7525 out:
7526         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7527 }
7528
7529 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7530 {
7531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7532         struct wireless_dev *wdev = info->user_ptr[1];
7533         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7534
7535         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7536                 return -EINVAL;
7537
7538         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7539                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7540
7541         switch (wdev->iftype) {
7542         case NL80211_IFTYPE_STATION:
7543         case NL80211_IFTYPE_ADHOC:
7544         case NL80211_IFTYPE_P2P_CLIENT:
7545         case NL80211_IFTYPE_AP:
7546         case NL80211_IFTYPE_AP_VLAN:
7547         case NL80211_IFTYPE_MESH_POINT:
7548         case NL80211_IFTYPE_P2P_GO:
7549         case NL80211_IFTYPE_P2P_DEVICE:
7550                 break;
7551         default:
7552                 return -EOPNOTSUPP;
7553         }
7554
7555         /* not much point in registering if we can't reply */
7556         if (!rdev->ops->mgmt_tx)
7557                 return -EOPNOTSUPP;
7558
7559         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7560                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7561                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7562 }
7563
7564 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7565 {
7566         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7567         struct wireless_dev *wdev = info->user_ptr[1];
7568         struct cfg80211_chan_def chandef;
7569         int err;
7570         void *hdr = NULL;
7571         u64 cookie;
7572         struct sk_buff *msg = NULL;
7573         struct cfg80211_mgmt_tx_params params = {
7574                 .dont_wait_for_ack =
7575                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7576         };
7577
7578         if (!info->attrs[NL80211_ATTR_FRAME])
7579                 return -EINVAL;
7580
7581         if (!rdev->ops->mgmt_tx)
7582                 return -EOPNOTSUPP;
7583
7584         switch (wdev->iftype) {
7585         case NL80211_IFTYPE_P2P_DEVICE:
7586                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7587                         return -EINVAL;
7588         case NL80211_IFTYPE_STATION:
7589         case NL80211_IFTYPE_ADHOC:
7590         case NL80211_IFTYPE_P2P_CLIENT:
7591         case NL80211_IFTYPE_AP:
7592         case NL80211_IFTYPE_AP_VLAN:
7593         case NL80211_IFTYPE_MESH_POINT:
7594         case NL80211_IFTYPE_P2P_GO:
7595                 break;
7596         default:
7597                 return -EOPNOTSUPP;
7598         }
7599
7600         if (info->attrs[NL80211_ATTR_DURATION]) {
7601                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7602                         return -EINVAL;
7603                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7604
7605                 /*
7606                  * We should wait on the channel for at least a minimum amount
7607                  * of time (10ms) but no longer than the driver supports.
7608                  */
7609                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7610                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
7611                         return -EINVAL;
7612
7613         }
7614
7615         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7616
7617         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7618                 return -EINVAL;
7619
7620         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7621
7622         /* get the channel if any has been specified, otherwise pass NULL to
7623          * the driver. The latter will use the current one
7624          */
7625         chandef.chan = NULL;
7626         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7627                 err = nl80211_parse_chandef(rdev, info, &chandef);
7628                 if (err)
7629                         return err;
7630         }
7631
7632         if (!chandef.chan && params.offchan)
7633                 return -EINVAL;
7634
7635         if (!params.dont_wait_for_ack) {
7636                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7637                 if (!msg)
7638                         return -ENOMEM;
7639
7640                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7641                                      NL80211_CMD_FRAME);
7642                 if (!hdr) {
7643                         err = -ENOBUFS;
7644                         goto free_msg;
7645                 }
7646         }
7647
7648         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
7649         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
7650         params.chan = chandef.chan;
7651         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
7652         if (err)
7653                 goto free_msg;
7654
7655         if (msg) {
7656                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7657                         goto nla_put_failure;
7658
7659                 genlmsg_end(msg, hdr);
7660                 return genlmsg_reply(msg, info);
7661         }
7662
7663         return 0;
7664
7665  nla_put_failure:
7666         err = -ENOBUFS;
7667  free_msg:
7668         nlmsg_free(msg);
7669         return err;
7670 }
7671
7672 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7673 {
7674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7675         struct wireless_dev *wdev = info->user_ptr[1];
7676         u64 cookie;
7677
7678         if (!info->attrs[NL80211_ATTR_COOKIE])
7679                 return -EINVAL;
7680
7681         if (!rdev->ops->mgmt_tx_cancel_wait)
7682                 return -EOPNOTSUPP;
7683
7684         switch (wdev->iftype) {
7685         case NL80211_IFTYPE_STATION:
7686         case NL80211_IFTYPE_ADHOC:
7687         case NL80211_IFTYPE_P2P_CLIENT:
7688         case NL80211_IFTYPE_AP:
7689         case NL80211_IFTYPE_AP_VLAN:
7690         case NL80211_IFTYPE_P2P_GO:
7691         case NL80211_IFTYPE_P2P_DEVICE:
7692                 break;
7693         default:
7694                 return -EOPNOTSUPP;
7695         }
7696
7697         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7698
7699         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7700 }
7701
7702 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7703 {
7704         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7705         struct wireless_dev *wdev;
7706         struct net_device *dev = info->user_ptr[1];
7707         u8 ps_state;
7708         bool state;
7709         int err;
7710
7711         if (!info->attrs[NL80211_ATTR_PS_STATE])
7712                 return -EINVAL;
7713
7714         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7715
7716         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7717                 return -EINVAL;
7718
7719         wdev = dev->ieee80211_ptr;
7720
7721         if (!rdev->ops->set_power_mgmt)
7722                 return -EOPNOTSUPP;
7723
7724         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7725
7726         if (state == wdev->ps)
7727                 return 0;
7728
7729         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7730         if (!err)
7731                 wdev->ps = state;
7732         return err;
7733 }
7734
7735 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7736 {
7737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7738         enum nl80211_ps_state ps_state;
7739         struct wireless_dev *wdev;
7740         struct net_device *dev = info->user_ptr[1];
7741         struct sk_buff *msg;
7742         void *hdr;
7743         int err;
7744
7745         wdev = dev->ieee80211_ptr;
7746
7747         if (!rdev->ops->set_power_mgmt)
7748                 return -EOPNOTSUPP;
7749
7750         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7751         if (!msg)
7752                 return -ENOMEM;
7753
7754         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7755                              NL80211_CMD_GET_POWER_SAVE);
7756         if (!hdr) {
7757                 err = -ENOBUFS;
7758                 goto free_msg;
7759         }
7760
7761         if (wdev->ps)
7762                 ps_state = NL80211_PS_ENABLED;
7763         else
7764                 ps_state = NL80211_PS_DISABLED;
7765
7766         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7767                 goto nla_put_failure;
7768
7769         genlmsg_end(msg, hdr);
7770         return genlmsg_reply(msg, info);
7771
7772  nla_put_failure:
7773         err = -ENOBUFS;
7774  free_msg:
7775         nlmsg_free(msg);
7776         return err;
7777 }
7778
7779 static struct nla_policy
7780 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7781         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7782         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7783         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7784         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7785         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7786         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7787 };
7788
7789 static int nl80211_set_cqm_txe(struct genl_info *info,
7790                                u32 rate, u32 pkts, u32 intvl)
7791 {
7792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7793         struct net_device *dev = info->user_ptr[1];
7794         struct wireless_dev *wdev = dev->ieee80211_ptr;
7795
7796         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7797                 return -EINVAL;
7798
7799         if (!rdev->ops->set_cqm_txe_config)
7800                 return -EOPNOTSUPP;
7801
7802         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7803             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7804                 return -EOPNOTSUPP;
7805
7806         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7807 }
7808
7809 static int nl80211_set_cqm_rssi(struct genl_info *info,
7810                                 s32 threshold, u32 hysteresis)
7811 {
7812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7813         struct net_device *dev = info->user_ptr[1];
7814         struct wireless_dev *wdev = dev->ieee80211_ptr;
7815
7816         if (threshold > 0)
7817                 return -EINVAL;
7818
7819         /* disabling - hysteresis should also be zero then */
7820         if (threshold == 0)
7821                 hysteresis = 0;
7822
7823         if (!rdev->ops->set_cqm_rssi_config)
7824                 return -EOPNOTSUPP;
7825
7826         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7827             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7828                 return -EOPNOTSUPP;
7829
7830         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7831 }
7832
7833 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7834 {
7835         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7836         struct nlattr *cqm;
7837         int err;
7838
7839         cqm = info->attrs[NL80211_ATTR_CQM];
7840         if (!cqm)
7841                 return -EINVAL;
7842
7843         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7844                                nl80211_attr_cqm_policy);
7845         if (err)
7846                 return err;
7847
7848         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7849             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7850                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7851                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7852
7853                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7854         }
7855
7856         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7857             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7858             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7859                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7860                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7861                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7862
7863                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7864         }
7865
7866         return -EINVAL;
7867 }
7868
7869 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7870 {
7871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7872         struct net_device *dev = info->user_ptr[1];
7873         struct mesh_config cfg;
7874         struct mesh_setup setup;
7875         int err;
7876
7877         /* start with default */
7878         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7879         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7880
7881         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7882                 /* and parse parameters if given */
7883                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7884                 if (err)
7885                         return err;
7886         }
7887
7888         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7889             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7890                 return -EINVAL;
7891
7892         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7893         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7894
7895         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7896             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7897                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7898                         return -EINVAL;
7899
7900         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7901                 setup.beacon_interval =
7902                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7903                 if (setup.beacon_interval < 10 ||
7904                     setup.beacon_interval > 10000)
7905                         return -EINVAL;
7906         }
7907
7908         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7909                 setup.dtim_period =
7910                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7911                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7912                         return -EINVAL;
7913         }
7914
7915         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7916                 /* parse additional setup parameters if given */
7917                 err = nl80211_parse_mesh_setup(info, &setup);
7918                 if (err)
7919                         return err;
7920         }
7921
7922         if (setup.user_mpm)
7923                 cfg.auto_open_plinks = false;
7924
7925         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7926                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7927                 if (err)
7928                         return err;
7929         } else {
7930                 /* cfg80211_join_mesh() will sort it out */
7931                 setup.chandef.chan = NULL;
7932         }
7933
7934         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7935                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7936                 int n_rates =
7937                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7938                 struct ieee80211_supported_band *sband;
7939
7940                 if (!setup.chandef.chan)
7941                         return -EINVAL;
7942
7943                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7944
7945                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7946                                              &setup.basic_rates);
7947                 if (err)
7948                         return err;
7949         }
7950
7951         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7952 }
7953
7954 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7955 {
7956         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7957         struct net_device *dev = info->user_ptr[1];
7958
7959         return cfg80211_leave_mesh(rdev, dev);
7960 }
7961
7962 #ifdef CONFIG_PM
7963 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7964                                         struct cfg80211_registered_device *rdev)
7965 {
7966         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7967         struct nlattr *nl_pats, *nl_pat;
7968         int i, pat_len;
7969
7970         if (!wowlan->n_patterns)
7971                 return 0;
7972
7973         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7974         if (!nl_pats)
7975                 return -ENOBUFS;
7976
7977         for (i = 0; i < wowlan->n_patterns; i++) {
7978                 nl_pat = nla_nest_start(msg, i + 1);
7979                 if (!nl_pat)
7980                         return -ENOBUFS;
7981                 pat_len = wowlan->patterns[i].pattern_len;
7982                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7983                             wowlan->patterns[i].mask) ||
7984                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7985                             wowlan->patterns[i].pattern) ||
7986                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7987                                 wowlan->patterns[i].pkt_offset))
7988                         return -ENOBUFS;
7989                 nla_nest_end(msg, nl_pat);
7990         }
7991         nla_nest_end(msg, nl_pats);
7992
7993         return 0;
7994 }
7995
7996 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7997                                    struct cfg80211_wowlan_tcp *tcp)
7998 {
7999         struct nlattr *nl_tcp;
8000
8001         if (!tcp)
8002                 return 0;
8003
8004         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8005         if (!nl_tcp)
8006                 return -ENOBUFS;
8007
8008         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8009             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8010             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8011             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8012             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8013             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8014                     tcp->payload_len, tcp->payload) ||
8015             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8016                         tcp->data_interval) ||
8017             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8018                     tcp->wake_len, tcp->wake_data) ||
8019             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8020                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8021                 return -ENOBUFS;
8022
8023         if (tcp->payload_seq.len &&
8024             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8025                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8026                 return -ENOBUFS;
8027
8028         if (tcp->payload_tok.len &&
8029             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8030                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8031                     &tcp->payload_tok))
8032                 return -ENOBUFS;
8033
8034         nla_nest_end(msg, nl_tcp);
8035
8036         return 0;
8037 }
8038
8039 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8040 {
8041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8042         struct sk_buff *msg;
8043         void *hdr;
8044         u32 size = NLMSG_DEFAULT_SIZE;
8045
8046         if (!rdev->wiphy.wowlan)
8047                 return -EOPNOTSUPP;
8048
8049         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8050                 /* adjust size to have room for all the data */
8051                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8052                         rdev->wiphy.wowlan_config->tcp->payload_len +
8053                         rdev->wiphy.wowlan_config->tcp->wake_len +
8054                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8055         }
8056
8057         msg = nlmsg_new(size, GFP_KERNEL);
8058         if (!msg)
8059                 return -ENOMEM;
8060
8061         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8062                              NL80211_CMD_GET_WOWLAN);
8063         if (!hdr)
8064                 goto nla_put_failure;
8065
8066         if (rdev->wiphy.wowlan_config) {
8067                 struct nlattr *nl_wowlan;
8068
8069                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8070                 if (!nl_wowlan)
8071                         goto nla_put_failure;
8072
8073                 if ((rdev->wiphy.wowlan_config->any &&
8074                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8075                     (rdev->wiphy.wowlan_config->disconnect &&
8076                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8077                     (rdev->wiphy.wowlan_config->magic_pkt &&
8078                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8079                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8080                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8081                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8082                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8083                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8084                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8085                     (rdev->wiphy.wowlan_config->rfkill_release &&
8086                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8087                         goto nla_put_failure;
8088
8089                 if (nl80211_send_wowlan_patterns(msg, rdev))
8090                         goto nla_put_failure;
8091
8092                 if (nl80211_send_wowlan_tcp(msg,
8093                                             rdev->wiphy.wowlan_config->tcp))
8094                         goto nla_put_failure;
8095
8096                 nla_nest_end(msg, nl_wowlan);
8097         }
8098
8099         genlmsg_end(msg, hdr);
8100         return genlmsg_reply(msg, info);
8101
8102 nla_put_failure:
8103         nlmsg_free(msg);
8104         return -ENOBUFS;
8105 }
8106
8107 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8108                                     struct nlattr *attr,
8109                                     struct cfg80211_wowlan *trig)
8110 {
8111         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8112         struct cfg80211_wowlan_tcp *cfg;
8113         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8114         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8115         u32 size;
8116         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8117         int err, port;
8118
8119         if (!rdev->wiphy.wowlan->tcp)
8120                 return -EINVAL;
8121
8122         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8123                         nla_data(attr), nla_len(attr),
8124                         nl80211_wowlan_tcp_policy);
8125         if (err)
8126                 return err;
8127
8128         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8129             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8130             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8131             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8132             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8133             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8134             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8135             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8136                 return -EINVAL;
8137
8138         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8139         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8140                 return -EINVAL;
8141
8142         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8143                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8144             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8145                 return -EINVAL;
8146
8147         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8148         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8149                 return -EINVAL;
8150
8151         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8152         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8153                 return -EINVAL;
8154
8155         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8156                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8157
8158                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8159                 tokens_size = tokln - sizeof(*tok);
8160
8161                 if (!tok->len || tokens_size % tok->len)
8162                         return -EINVAL;
8163                 if (!rdev->wiphy.wowlan->tcp->tok)
8164                         return -EINVAL;
8165                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8166                         return -EINVAL;
8167                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8168                         return -EINVAL;
8169                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8170                         return -EINVAL;
8171                 if (tok->offset + tok->len > data_size)
8172                         return -EINVAL;
8173         }
8174
8175         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8176                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8177                 if (!rdev->wiphy.wowlan->tcp->seq)
8178                         return -EINVAL;
8179                 if (seq->len == 0 || seq->len > 4)
8180                         return -EINVAL;
8181                 if (seq->len + seq->offset > data_size)
8182                         return -EINVAL;
8183         }
8184
8185         size = sizeof(*cfg);
8186         size += data_size;
8187         size += wake_size + wake_mask_size;
8188         size += tokens_size;
8189
8190         cfg = kzalloc(size, GFP_KERNEL);
8191         if (!cfg)
8192                 return -ENOMEM;
8193         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8194         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8195         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8196                ETH_ALEN);
8197         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8198                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8199         else
8200                 port = 0;
8201 #ifdef CONFIG_INET
8202         /* allocate a socket and port for it and use it */
8203         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8204                             IPPROTO_TCP, &cfg->sock, 1);
8205         if (err) {
8206                 kfree(cfg);
8207                 return err;
8208         }
8209         if (inet_csk_get_port(cfg->sock->sk, port)) {
8210                 sock_release(cfg->sock);
8211                 kfree(cfg);
8212                 return -EADDRINUSE;
8213         }
8214         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8215 #else
8216         if (!port) {
8217                 kfree(cfg);
8218                 return -EINVAL;
8219         }
8220         cfg->src_port = port;
8221 #endif
8222
8223         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8224         cfg->payload_len = data_size;
8225         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8226         memcpy((void *)cfg->payload,
8227                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8228                data_size);
8229         if (seq)
8230                 cfg->payload_seq = *seq;
8231         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8232         cfg->wake_len = wake_size;
8233         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8234         memcpy((void *)cfg->wake_data,
8235                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8236                wake_size);
8237         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8238                          data_size + wake_size;
8239         memcpy((void *)cfg->wake_mask,
8240                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8241                wake_mask_size);
8242         if (tok) {
8243                 cfg->tokens_size = tokens_size;
8244                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8245         }
8246
8247         trig->tcp = cfg;
8248
8249         return 0;
8250 }
8251
8252 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8253 {
8254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8255         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8256         struct cfg80211_wowlan new_triggers = {};
8257         struct cfg80211_wowlan *ntrig;
8258         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8259         int err, i;
8260         bool prev_enabled = rdev->wiphy.wowlan_config;
8261
8262         if (!wowlan)
8263                 return -EOPNOTSUPP;
8264
8265         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8266                 cfg80211_rdev_free_wowlan(rdev);
8267                 rdev->wiphy.wowlan_config = NULL;
8268                 goto set_wakeup;
8269         }
8270
8271         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8272                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8273                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8274                         nl80211_wowlan_policy);
8275         if (err)
8276                 return err;
8277
8278         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8279                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8280                         return -EINVAL;
8281                 new_triggers.any = true;
8282         }
8283
8284         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8285                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8286                         return -EINVAL;
8287                 new_triggers.disconnect = true;
8288         }
8289
8290         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8291                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8292                         return -EINVAL;
8293                 new_triggers.magic_pkt = true;
8294         }
8295
8296         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8297                 return -EINVAL;
8298
8299         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8300                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8301                         return -EINVAL;
8302                 new_triggers.gtk_rekey_failure = true;
8303         }
8304
8305         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8306                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8307                         return -EINVAL;
8308                 new_triggers.eap_identity_req = true;
8309         }
8310
8311         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8312                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8313                         return -EINVAL;
8314                 new_triggers.four_way_handshake = true;
8315         }
8316
8317         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8318                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8319                         return -EINVAL;
8320                 new_triggers.rfkill_release = true;
8321         }
8322
8323         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8324                 struct nlattr *pat;
8325                 int n_patterns = 0;
8326                 int rem, pat_len, mask_len, pkt_offset;
8327                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8328
8329                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8330                                     rem)
8331                         n_patterns++;
8332                 if (n_patterns > wowlan->n_patterns)
8333                         return -EINVAL;
8334
8335                 new_triggers.patterns = kcalloc(n_patterns,
8336                                                 sizeof(new_triggers.patterns[0]),
8337                                                 GFP_KERNEL);
8338                 if (!new_triggers.patterns)
8339                         return -ENOMEM;
8340
8341                 new_triggers.n_patterns = n_patterns;
8342                 i = 0;
8343
8344                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8345                                     rem) {
8346                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8347                                   nla_len(pat), NULL);
8348                         err = -EINVAL;
8349                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8350                             !pat_tb[NL80211_PKTPAT_PATTERN])
8351                                 goto error;
8352                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8353                         mask_len = DIV_ROUND_UP(pat_len, 8);
8354                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8355                                 goto error;
8356                         if (pat_len > wowlan->pattern_max_len ||
8357                             pat_len < wowlan->pattern_min_len)
8358                                 goto error;
8359
8360                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8361                                 pkt_offset = 0;
8362                         else
8363                                 pkt_offset = nla_get_u32(
8364                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8365                         if (pkt_offset > wowlan->max_pkt_offset)
8366                                 goto error;
8367                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8368
8369                         new_triggers.patterns[i].mask =
8370                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8371                         if (!new_triggers.patterns[i].mask) {
8372                                 err = -ENOMEM;
8373                                 goto error;
8374                         }
8375                         new_triggers.patterns[i].pattern =
8376                                 new_triggers.patterns[i].mask + mask_len;
8377                         memcpy(new_triggers.patterns[i].mask,
8378                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8379                                mask_len);
8380                         new_triggers.patterns[i].pattern_len = pat_len;
8381                         memcpy(new_triggers.patterns[i].pattern,
8382                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8383                                pat_len);
8384                         i++;
8385                 }
8386         }
8387
8388         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8389                 err = nl80211_parse_wowlan_tcp(
8390                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8391                         &new_triggers);
8392                 if (err)
8393                         goto error;
8394         }
8395
8396         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8397         if (!ntrig) {
8398                 err = -ENOMEM;
8399                 goto error;
8400         }
8401         cfg80211_rdev_free_wowlan(rdev);
8402         rdev->wiphy.wowlan_config = ntrig;
8403
8404  set_wakeup:
8405         if (rdev->ops->set_wakeup &&
8406             prev_enabled != !!rdev->wiphy.wowlan_config)
8407                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8408
8409         return 0;
8410  error:
8411         for (i = 0; i < new_triggers.n_patterns; i++)
8412                 kfree(new_triggers.patterns[i].mask);
8413         kfree(new_triggers.patterns);
8414         if (new_triggers.tcp && new_triggers.tcp->sock)
8415                 sock_release(new_triggers.tcp->sock);
8416         kfree(new_triggers.tcp);
8417         return err;
8418 }
8419 #endif
8420
8421 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8422                                        struct cfg80211_registered_device *rdev)
8423 {
8424         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8425         int i, j, pat_len;
8426         struct cfg80211_coalesce_rules *rule;
8427
8428         if (!rdev->coalesce->n_rules)
8429                 return 0;
8430
8431         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8432         if (!nl_rules)
8433                 return -ENOBUFS;
8434
8435         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8436                 nl_rule = nla_nest_start(msg, i + 1);
8437                 if (!nl_rule)
8438                         return -ENOBUFS;
8439
8440                 rule = &rdev->coalesce->rules[i];
8441                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8442                                 rule->delay))
8443                         return -ENOBUFS;
8444
8445                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8446                                 rule->condition))
8447                         return -ENOBUFS;
8448
8449                 nl_pats = nla_nest_start(msg,
8450                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8451                 if (!nl_pats)
8452                         return -ENOBUFS;
8453
8454                 for (j = 0; j < rule->n_patterns; j++) {
8455                         nl_pat = nla_nest_start(msg, j + 1);
8456                         if (!nl_pat)
8457                                 return -ENOBUFS;
8458                         pat_len = rule->patterns[j].pattern_len;
8459                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8460                                     DIV_ROUND_UP(pat_len, 8),
8461                                     rule->patterns[j].mask) ||
8462                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8463                                     rule->patterns[j].pattern) ||
8464                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8465                                         rule->patterns[j].pkt_offset))
8466                                 return -ENOBUFS;
8467                         nla_nest_end(msg, nl_pat);
8468                 }
8469                 nla_nest_end(msg, nl_pats);
8470                 nla_nest_end(msg, nl_rule);
8471         }
8472         nla_nest_end(msg, nl_rules);
8473
8474         return 0;
8475 }
8476
8477 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8478 {
8479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8480         struct sk_buff *msg;
8481         void *hdr;
8482
8483         if (!rdev->wiphy.coalesce)
8484                 return -EOPNOTSUPP;
8485
8486         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8487         if (!msg)
8488                 return -ENOMEM;
8489
8490         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8491                              NL80211_CMD_GET_COALESCE);
8492         if (!hdr)
8493                 goto nla_put_failure;
8494
8495         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8496                 goto nla_put_failure;
8497
8498         genlmsg_end(msg, hdr);
8499         return genlmsg_reply(msg, info);
8500
8501 nla_put_failure:
8502         nlmsg_free(msg);
8503         return -ENOBUFS;
8504 }
8505
8506 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8507 {
8508         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8509         int i, j;
8510         struct cfg80211_coalesce_rules *rule;
8511
8512         if (!coalesce)
8513                 return;
8514
8515         for (i = 0; i < coalesce->n_rules; i++) {
8516                 rule = &coalesce->rules[i];
8517                 for (j = 0; j < rule->n_patterns; j++)
8518                         kfree(rule->patterns[j].mask);
8519                 kfree(rule->patterns);
8520         }
8521         kfree(coalesce->rules);
8522         kfree(coalesce);
8523         rdev->coalesce = NULL;
8524 }
8525
8526 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8527                                        struct nlattr *rule,
8528                                        struct cfg80211_coalesce_rules *new_rule)
8529 {
8530         int err, i;
8531         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8532         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8533         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8534         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8535
8536         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8537                         nla_len(rule), nl80211_coalesce_policy);
8538         if (err)
8539                 return err;
8540
8541         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8542                 new_rule->delay =
8543                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8544         if (new_rule->delay > coalesce->max_delay)
8545                 return -EINVAL;
8546
8547         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8548                 new_rule->condition =
8549                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8550         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8551             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8552                 return -EINVAL;
8553
8554         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8555                 return -EINVAL;
8556
8557         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8558                             rem)
8559                 n_patterns++;
8560         if (n_patterns > coalesce->n_patterns)
8561                 return -EINVAL;
8562
8563         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8564                                      GFP_KERNEL);
8565         if (!new_rule->patterns)
8566                 return -ENOMEM;
8567
8568         new_rule->n_patterns = n_patterns;
8569         i = 0;
8570
8571         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8572                             rem) {
8573                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8574                           nla_len(pat), NULL);
8575                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8576                     !pat_tb[NL80211_PKTPAT_PATTERN])
8577                         return -EINVAL;
8578                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8579                 mask_len = DIV_ROUND_UP(pat_len, 8);
8580                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8581                         return -EINVAL;
8582                 if (pat_len > coalesce->pattern_max_len ||
8583                     pat_len < coalesce->pattern_min_len)
8584                         return -EINVAL;
8585
8586                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8587                         pkt_offset = 0;
8588                 else
8589                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8590                 if (pkt_offset > coalesce->max_pkt_offset)
8591                         return -EINVAL;
8592                 new_rule->patterns[i].pkt_offset = pkt_offset;
8593
8594                 new_rule->patterns[i].mask =
8595                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8596                 if (!new_rule->patterns[i].mask)
8597                         return -ENOMEM;
8598                 new_rule->patterns[i].pattern =
8599                         new_rule->patterns[i].mask + mask_len;
8600                 memcpy(new_rule->patterns[i].mask,
8601                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8602                 new_rule->patterns[i].pattern_len = pat_len;
8603                 memcpy(new_rule->patterns[i].pattern,
8604                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8605                 i++;
8606         }
8607
8608         return 0;
8609 }
8610
8611 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8612 {
8613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8614         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8615         struct cfg80211_coalesce new_coalesce = {};
8616         struct cfg80211_coalesce *n_coalesce;
8617         int err, rem_rule, n_rules = 0, i, j;
8618         struct nlattr *rule;
8619         struct cfg80211_coalesce_rules *tmp_rule;
8620
8621         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8622                 return -EOPNOTSUPP;
8623
8624         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8625                 cfg80211_rdev_free_coalesce(rdev);
8626                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8627                 return 0;
8628         }
8629
8630         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8631                             rem_rule)
8632                 n_rules++;
8633         if (n_rules > coalesce->n_rules)
8634                 return -EINVAL;
8635
8636         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8637                                      GFP_KERNEL);
8638         if (!new_coalesce.rules)
8639                 return -ENOMEM;
8640
8641         new_coalesce.n_rules = n_rules;
8642         i = 0;
8643
8644         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8645                             rem_rule) {
8646                 err = nl80211_parse_coalesce_rule(rdev, rule,
8647                                                   &new_coalesce.rules[i]);
8648                 if (err)
8649                         goto error;
8650
8651                 i++;
8652         }
8653
8654         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8655         if (err)
8656                 goto error;
8657
8658         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8659         if (!n_coalesce) {
8660                 err = -ENOMEM;
8661                 goto error;
8662         }
8663         cfg80211_rdev_free_coalesce(rdev);
8664         rdev->coalesce = n_coalesce;
8665
8666         return 0;
8667 error:
8668         for (i = 0; i < new_coalesce.n_rules; i++) {
8669                 tmp_rule = &new_coalesce.rules[i];
8670                 for (j = 0; j < tmp_rule->n_patterns; j++)
8671                         kfree(tmp_rule->patterns[j].mask);
8672                 kfree(tmp_rule->patterns);
8673         }
8674         kfree(new_coalesce.rules);
8675
8676         return err;
8677 }
8678
8679 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8680 {
8681         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8682         struct net_device *dev = info->user_ptr[1];
8683         struct wireless_dev *wdev = dev->ieee80211_ptr;
8684         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8685         struct cfg80211_gtk_rekey_data rekey_data;
8686         int err;
8687
8688         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8689                 return -EINVAL;
8690
8691         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8692                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8693                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8694                         nl80211_rekey_policy);
8695         if (err)
8696                 return err;
8697
8698         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8699                 return -ERANGE;
8700         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8701                 return -ERANGE;
8702         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8703                 return -ERANGE;
8704
8705         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8706                NL80211_KEK_LEN);
8707         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8708                NL80211_KCK_LEN);
8709         memcpy(rekey_data.replay_ctr,
8710                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8711                NL80211_REPLAY_CTR_LEN);
8712
8713         wdev_lock(wdev);
8714         if (!wdev->current_bss) {
8715                 err = -ENOTCONN;
8716                 goto out;
8717         }
8718
8719         if (!rdev->ops->set_rekey_data) {
8720                 err = -EOPNOTSUPP;
8721                 goto out;
8722         }
8723
8724         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8725  out:
8726         wdev_unlock(wdev);
8727         return err;
8728 }
8729
8730 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8731                                              struct genl_info *info)
8732 {
8733         struct net_device *dev = info->user_ptr[1];
8734         struct wireless_dev *wdev = dev->ieee80211_ptr;
8735
8736         if (wdev->iftype != NL80211_IFTYPE_AP &&
8737             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8738                 return -EINVAL;
8739
8740         if (wdev->ap_unexpected_nlportid)
8741                 return -EBUSY;
8742
8743         wdev->ap_unexpected_nlportid = info->snd_portid;
8744         return 0;
8745 }
8746
8747 static int nl80211_probe_client(struct sk_buff *skb,
8748                                 struct genl_info *info)
8749 {
8750         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8751         struct net_device *dev = info->user_ptr[1];
8752         struct wireless_dev *wdev = dev->ieee80211_ptr;
8753         struct sk_buff *msg;
8754         void *hdr;
8755         const u8 *addr;
8756         u64 cookie;
8757         int err;
8758
8759         if (wdev->iftype != NL80211_IFTYPE_AP &&
8760             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8761                 return -EOPNOTSUPP;
8762
8763         if (!info->attrs[NL80211_ATTR_MAC])
8764                 return -EINVAL;
8765
8766         if (!rdev->ops->probe_client)
8767                 return -EOPNOTSUPP;
8768
8769         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8770         if (!msg)
8771                 return -ENOMEM;
8772
8773         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8774                              NL80211_CMD_PROBE_CLIENT);
8775         if (!hdr) {
8776                 err = -ENOBUFS;
8777                 goto free_msg;
8778         }
8779
8780         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8781
8782         err = rdev_probe_client(rdev, dev, addr, &cookie);
8783         if (err)
8784                 goto free_msg;
8785
8786         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8787                 goto nla_put_failure;
8788
8789         genlmsg_end(msg, hdr);
8790
8791         return genlmsg_reply(msg, info);
8792
8793  nla_put_failure:
8794         err = -ENOBUFS;
8795  free_msg:
8796         nlmsg_free(msg);
8797         return err;
8798 }
8799
8800 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8801 {
8802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8803         struct cfg80211_beacon_registration *reg, *nreg;
8804         int rv;
8805
8806         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8807                 return -EOPNOTSUPP;
8808
8809         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8810         if (!nreg)
8811                 return -ENOMEM;
8812
8813         /* First, check if already registered. */
8814         spin_lock_bh(&rdev->beacon_registrations_lock);
8815         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8816                 if (reg->nlportid == info->snd_portid) {
8817                         rv = -EALREADY;
8818                         goto out_err;
8819                 }
8820         }
8821         /* Add it to the list */
8822         nreg->nlportid = info->snd_portid;
8823         list_add(&nreg->list, &rdev->beacon_registrations);
8824
8825         spin_unlock_bh(&rdev->beacon_registrations_lock);
8826
8827         return 0;
8828 out_err:
8829         spin_unlock_bh(&rdev->beacon_registrations_lock);
8830         kfree(nreg);
8831         return rv;
8832 }
8833
8834 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8835 {
8836         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8837         struct wireless_dev *wdev = info->user_ptr[1];
8838         int err;
8839
8840         if (!rdev->ops->start_p2p_device)
8841                 return -EOPNOTSUPP;
8842
8843         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8844                 return -EOPNOTSUPP;
8845
8846         if (wdev->p2p_started)
8847                 return 0;
8848
8849         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8850         if (err)
8851                 return err;
8852
8853         err = rdev_start_p2p_device(rdev, wdev);
8854         if (err)
8855                 return err;
8856
8857         wdev->p2p_started = true;
8858         rdev->opencount++;
8859
8860         return 0;
8861 }
8862
8863 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8864 {
8865         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8866         struct wireless_dev *wdev = info->user_ptr[1];
8867
8868         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8869                 return -EOPNOTSUPP;
8870
8871         if (!rdev->ops->stop_p2p_device)
8872                 return -EOPNOTSUPP;
8873
8874         cfg80211_stop_p2p_device(rdev, wdev);
8875
8876         return 0;
8877 }
8878
8879 static int nl80211_get_protocol_features(struct sk_buff *skb,
8880                                          struct genl_info *info)
8881 {
8882         void *hdr;
8883         struct sk_buff *msg;
8884
8885         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8886         if (!msg)
8887                 return -ENOMEM;
8888
8889         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8890                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8891         if (!hdr)
8892                 goto nla_put_failure;
8893
8894         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8895                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8896                 goto nla_put_failure;
8897
8898         genlmsg_end(msg, hdr);
8899         return genlmsg_reply(msg, info);
8900
8901  nla_put_failure:
8902         kfree_skb(msg);
8903         return -ENOBUFS;
8904 }
8905
8906 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8907 {
8908         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8909         struct cfg80211_update_ft_ies_params ft_params;
8910         struct net_device *dev = info->user_ptr[1];
8911
8912         if (!rdev->ops->update_ft_ies)
8913                 return -EOPNOTSUPP;
8914
8915         if (!info->attrs[NL80211_ATTR_MDID] ||
8916             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8917                 return -EINVAL;
8918
8919         memset(&ft_params, 0, sizeof(ft_params));
8920         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8921         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8922         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8923
8924         return rdev_update_ft_ies(rdev, dev, &ft_params);
8925 }
8926
8927 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8928                                        struct genl_info *info)
8929 {
8930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8931         struct wireless_dev *wdev = info->user_ptr[1];
8932         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8933         u16 duration;
8934         int ret;
8935
8936         if (!rdev->ops->crit_proto_start)
8937                 return -EOPNOTSUPP;
8938
8939         if (WARN_ON(!rdev->ops->crit_proto_stop))
8940                 return -EINVAL;
8941
8942         if (rdev->crit_proto_nlportid)
8943                 return -EBUSY;
8944
8945         /* determine protocol if provided */
8946         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8947                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8948
8949         if (proto >= NUM_NL80211_CRIT_PROTO)
8950                 return -EINVAL;
8951
8952         /* timeout must be provided */
8953         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8954                 return -EINVAL;
8955
8956         duration =
8957                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8958
8959         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8960                 return -ERANGE;
8961
8962         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8963         if (!ret)
8964                 rdev->crit_proto_nlportid = info->snd_portid;
8965
8966         return ret;
8967 }
8968
8969 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8970                                       struct genl_info *info)
8971 {
8972         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8973         struct wireless_dev *wdev = info->user_ptr[1];
8974
8975         if (!rdev->ops->crit_proto_stop)
8976                 return -EOPNOTSUPP;
8977
8978         if (rdev->crit_proto_nlportid) {
8979                 rdev->crit_proto_nlportid = 0;
8980                 rdev_crit_proto_stop(rdev, wdev);
8981         }
8982         return 0;
8983 }
8984
8985 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
8986 {
8987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8988         struct wireless_dev *wdev =
8989                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
8990         int i, err;
8991         u32 vid, subcmd;
8992
8993         if (!rdev->wiphy.vendor_commands)
8994                 return -EOPNOTSUPP;
8995
8996         if (IS_ERR(wdev)) {
8997                 err = PTR_ERR(wdev);
8998                 if (err != -EINVAL)
8999                         return err;
9000                 wdev = NULL;
9001         } else if (wdev->wiphy != &rdev->wiphy) {
9002                 return -EINVAL;
9003         }
9004
9005         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9006             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9007                 return -EINVAL;
9008
9009         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9010         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9011         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9012                 const struct wiphy_vendor_command *vcmd;
9013                 void *data = NULL;
9014                 int len = 0;
9015
9016                 vcmd = &rdev->wiphy.vendor_commands[i];
9017
9018                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9019                         continue;
9020
9021                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9022                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9023                         if (!wdev)
9024                                 return -EINVAL;
9025                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9026                             !wdev->netdev)
9027                                 return -EINVAL;
9028
9029                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9030                                 if (wdev->netdev &&
9031                                     !netif_running(wdev->netdev))
9032                                         return -ENETDOWN;
9033                                 if (!wdev->netdev && !wdev->p2p_started)
9034                                         return -ENETDOWN;
9035                         }
9036                 } else {
9037                         wdev = NULL;
9038                 }
9039
9040                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9041                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9042                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9043                 }
9044
9045                 rdev->cur_cmd_info = info;
9046                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9047                                                           data, len);
9048                 rdev->cur_cmd_info = NULL;
9049                 return err;
9050         }
9051
9052         return -EOPNOTSUPP;
9053 }
9054
9055 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9056                                            enum nl80211_commands cmd,
9057                                            enum nl80211_attrs attr,
9058                                            int approxlen)
9059 {
9060         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9061
9062         if (WARN_ON(!rdev->cur_cmd_info))
9063                 return NULL;
9064
9065         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9066                                            rdev->cur_cmd_info->snd_portid,
9067                                            rdev->cur_cmd_info->snd_seq,
9068                                            cmd, attr, NULL, GFP_KERNEL);
9069 }
9070 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9071
9072 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9073 {
9074         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9075         void *hdr = ((void **)skb->cb)[1];
9076         struct nlattr *data = ((void **)skb->cb)[2];
9077
9078         if (WARN_ON(!rdev->cur_cmd_info)) {
9079                 kfree_skb(skb);
9080                 return -EINVAL;
9081         }
9082
9083         nla_nest_end(skb, data);
9084         genlmsg_end(skb, hdr);
9085         return genlmsg_reply(skb, rdev->cur_cmd_info);
9086 }
9087 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9088
9089
9090 static int nl80211_set_qos_map(struct sk_buff *skb,
9091                                struct genl_info *info)
9092 {
9093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9094         struct cfg80211_qos_map *qos_map = NULL;
9095         struct net_device *dev = info->user_ptr[1];
9096         u8 *pos, len, num_des, des_len, des;
9097         int ret;
9098
9099         if (!rdev->ops->set_qos_map)
9100                 return -EOPNOTSUPP;
9101
9102         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9103                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9104                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9105
9106                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9107                     len > IEEE80211_QOS_MAP_LEN_MAX)
9108                         return -EINVAL;
9109
9110                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9111                 if (!qos_map)
9112                         return -ENOMEM;
9113
9114                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9115                 if (num_des) {
9116                         des_len = num_des *
9117                                 sizeof(struct cfg80211_dscp_exception);
9118                         memcpy(qos_map->dscp_exception, pos, des_len);
9119                         qos_map->num_des = num_des;
9120                         for (des = 0; des < num_des; des++) {
9121                                 if (qos_map->dscp_exception[des].up > 7) {
9122                                         kfree(qos_map);
9123                                         return -EINVAL;
9124                                 }
9125                         }
9126                         pos += des_len;
9127                 }
9128                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9129         }
9130
9131         wdev_lock(dev->ieee80211_ptr);
9132         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9133         if (!ret)
9134                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9135         wdev_unlock(dev->ieee80211_ptr);
9136
9137         kfree(qos_map);
9138         return ret;
9139 }
9140
9141 #define NL80211_FLAG_NEED_WIPHY         0x01
9142 #define NL80211_FLAG_NEED_NETDEV        0x02
9143 #define NL80211_FLAG_NEED_RTNL          0x04
9144 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
9145 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
9146                                          NL80211_FLAG_CHECK_NETDEV_UP)
9147 #define NL80211_FLAG_NEED_WDEV          0x10
9148 /* If a netdev is associated, it must be UP, P2P must be started */
9149 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
9150                                          NL80211_FLAG_CHECK_NETDEV_UP)
9151
9152 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9153                             struct genl_info *info)
9154 {
9155         struct cfg80211_registered_device *rdev;
9156         struct wireless_dev *wdev;
9157         struct net_device *dev;
9158         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9159
9160         if (rtnl)
9161                 rtnl_lock();
9162
9163         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9164                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9165                 if (IS_ERR(rdev)) {
9166                         if (rtnl)
9167                                 rtnl_unlock();
9168                         return PTR_ERR(rdev);
9169                 }
9170                 info->user_ptr[0] = rdev;
9171         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9172                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9173                 ASSERT_RTNL();
9174
9175                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9176                                                   info->attrs);
9177                 if (IS_ERR(wdev)) {
9178                         if (rtnl)
9179                                 rtnl_unlock();
9180                         return PTR_ERR(wdev);
9181                 }
9182
9183                 dev = wdev->netdev;
9184                 rdev = wiphy_to_dev(wdev->wiphy);
9185
9186                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9187                         if (!dev) {
9188                                 if (rtnl)
9189                                         rtnl_unlock();
9190                                 return -EINVAL;
9191                         }
9192
9193                         info->user_ptr[1] = dev;
9194                 } else {
9195                         info->user_ptr[1] = wdev;
9196                 }
9197
9198                 if (dev) {
9199                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9200                             !netif_running(dev)) {
9201                                 if (rtnl)
9202                                         rtnl_unlock();
9203                                 return -ENETDOWN;
9204                         }
9205
9206                         dev_hold(dev);
9207                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9208                         if (!wdev->p2p_started) {
9209                                 if (rtnl)
9210                                         rtnl_unlock();
9211                                 return -ENETDOWN;
9212                         }
9213                 }
9214
9215                 info->user_ptr[0] = rdev;
9216         }
9217
9218         return 0;
9219 }
9220
9221 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9222                               struct genl_info *info)
9223 {
9224         if (info->user_ptr[1]) {
9225                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9226                         struct wireless_dev *wdev = info->user_ptr[1];
9227
9228                         if (wdev->netdev)
9229                                 dev_put(wdev->netdev);
9230                 } else {
9231                         dev_put(info->user_ptr[1]);
9232                 }
9233         }
9234         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9235                 rtnl_unlock();
9236 }
9237
9238 static const struct genl_ops nl80211_ops[] = {
9239         {
9240                 .cmd = NL80211_CMD_GET_WIPHY,
9241                 .doit = nl80211_get_wiphy,
9242                 .dumpit = nl80211_dump_wiphy,
9243                 .done = nl80211_dump_wiphy_done,
9244                 .policy = nl80211_policy,
9245                 /* can be retrieved by unprivileged users */
9246                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9247                                   NL80211_FLAG_NEED_RTNL,
9248         },
9249         {
9250                 .cmd = NL80211_CMD_SET_WIPHY,
9251                 .doit = nl80211_set_wiphy,
9252                 .policy = nl80211_policy,
9253                 .flags = GENL_ADMIN_PERM,
9254                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9255         },
9256         {
9257                 .cmd = NL80211_CMD_GET_INTERFACE,
9258                 .doit = nl80211_get_interface,
9259                 .dumpit = nl80211_dump_interface,
9260                 .policy = nl80211_policy,
9261                 /* can be retrieved by unprivileged users */
9262                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9263                                   NL80211_FLAG_NEED_RTNL,
9264         },
9265         {
9266                 .cmd = NL80211_CMD_SET_INTERFACE,
9267                 .doit = nl80211_set_interface,
9268                 .policy = nl80211_policy,
9269                 .flags = GENL_ADMIN_PERM,
9270                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9271                                   NL80211_FLAG_NEED_RTNL,
9272         },
9273         {
9274                 .cmd = NL80211_CMD_NEW_INTERFACE,
9275                 .doit = nl80211_new_interface,
9276                 .policy = nl80211_policy,
9277                 .flags = GENL_ADMIN_PERM,
9278                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9279                                   NL80211_FLAG_NEED_RTNL,
9280         },
9281         {
9282                 .cmd = NL80211_CMD_DEL_INTERFACE,
9283                 .doit = nl80211_del_interface,
9284                 .policy = nl80211_policy,
9285                 .flags = GENL_ADMIN_PERM,
9286                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9287                                   NL80211_FLAG_NEED_RTNL,
9288         },
9289         {
9290                 .cmd = NL80211_CMD_GET_KEY,
9291                 .doit = nl80211_get_key,
9292                 .policy = nl80211_policy,
9293                 .flags = GENL_ADMIN_PERM,
9294                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9295                                   NL80211_FLAG_NEED_RTNL,
9296         },
9297         {
9298                 .cmd = NL80211_CMD_SET_KEY,
9299                 .doit = nl80211_set_key,
9300                 .policy = nl80211_policy,
9301                 .flags = GENL_ADMIN_PERM,
9302                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9303                                   NL80211_FLAG_NEED_RTNL,
9304         },
9305         {
9306                 .cmd = NL80211_CMD_NEW_KEY,
9307                 .doit = nl80211_new_key,
9308                 .policy = nl80211_policy,
9309                 .flags = GENL_ADMIN_PERM,
9310                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9311                                   NL80211_FLAG_NEED_RTNL,
9312         },
9313         {
9314                 .cmd = NL80211_CMD_DEL_KEY,
9315                 .doit = nl80211_del_key,
9316                 .policy = nl80211_policy,
9317                 .flags = GENL_ADMIN_PERM,
9318                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9319                                   NL80211_FLAG_NEED_RTNL,
9320         },
9321         {
9322                 .cmd = NL80211_CMD_SET_BEACON,
9323                 .policy = nl80211_policy,
9324                 .flags = GENL_ADMIN_PERM,
9325                 .doit = nl80211_set_beacon,
9326                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9327                                   NL80211_FLAG_NEED_RTNL,
9328         },
9329         {
9330                 .cmd = NL80211_CMD_START_AP,
9331                 .policy = nl80211_policy,
9332                 .flags = GENL_ADMIN_PERM,
9333                 .doit = nl80211_start_ap,
9334                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9335                                   NL80211_FLAG_NEED_RTNL,
9336         },
9337         {
9338                 .cmd = NL80211_CMD_STOP_AP,
9339                 .policy = nl80211_policy,
9340                 .flags = GENL_ADMIN_PERM,
9341                 .doit = nl80211_stop_ap,
9342                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9343                                   NL80211_FLAG_NEED_RTNL,
9344         },
9345         {
9346                 .cmd = NL80211_CMD_GET_STATION,
9347                 .doit = nl80211_get_station,
9348                 .dumpit = nl80211_dump_station,
9349                 .policy = nl80211_policy,
9350                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9351                                   NL80211_FLAG_NEED_RTNL,
9352         },
9353         {
9354                 .cmd = NL80211_CMD_SET_STATION,
9355                 .doit = nl80211_set_station,
9356                 .policy = nl80211_policy,
9357                 .flags = GENL_ADMIN_PERM,
9358                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9359                                   NL80211_FLAG_NEED_RTNL,
9360         },
9361         {
9362                 .cmd = NL80211_CMD_NEW_STATION,
9363                 .doit = nl80211_new_station,
9364                 .policy = nl80211_policy,
9365                 .flags = GENL_ADMIN_PERM,
9366                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9367                                   NL80211_FLAG_NEED_RTNL,
9368         },
9369         {
9370                 .cmd = NL80211_CMD_DEL_STATION,
9371                 .doit = nl80211_del_station,
9372                 .policy = nl80211_policy,
9373                 .flags = GENL_ADMIN_PERM,
9374                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9375                                   NL80211_FLAG_NEED_RTNL,
9376         },
9377         {
9378                 .cmd = NL80211_CMD_GET_MPATH,
9379                 .doit = nl80211_get_mpath,
9380                 .dumpit = nl80211_dump_mpath,
9381                 .policy = nl80211_policy,
9382                 .flags = GENL_ADMIN_PERM,
9383                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9384                                   NL80211_FLAG_NEED_RTNL,
9385         },
9386         {
9387                 .cmd = NL80211_CMD_SET_MPATH,
9388                 .doit = nl80211_set_mpath,
9389                 .policy = nl80211_policy,
9390                 .flags = GENL_ADMIN_PERM,
9391                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9392                                   NL80211_FLAG_NEED_RTNL,
9393         },
9394         {
9395                 .cmd = NL80211_CMD_NEW_MPATH,
9396                 .doit = nl80211_new_mpath,
9397                 .policy = nl80211_policy,
9398                 .flags = GENL_ADMIN_PERM,
9399                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9400                                   NL80211_FLAG_NEED_RTNL,
9401         },
9402         {
9403                 .cmd = NL80211_CMD_DEL_MPATH,
9404                 .doit = nl80211_del_mpath,
9405                 .policy = nl80211_policy,
9406                 .flags = GENL_ADMIN_PERM,
9407                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9408                                   NL80211_FLAG_NEED_RTNL,
9409         },
9410         {
9411                 .cmd = NL80211_CMD_SET_BSS,
9412                 .doit = nl80211_set_bss,
9413                 .policy = nl80211_policy,
9414                 .flags = GENL_ADMIN_PERM,
9415                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9416                                   NL80211_FLAG_NEED_RTNL,
9417         },
9418         {
9419                 .cmd = NL80211_CMD_GET_REG,
9420                 .doit = nl80211_get_reg,
9421                 .policy = nl80211_policy,
9422                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9423                 /* can be retrieved by unprivileged users */
9424         },
9425         {
9426                 .cmd = NL80211_CMD_SET_REG,
9427                 .doit = nl80211_set_reg,
9428                 .policy = nl80211_policy,
9429                 .flags = GENL_ADMIN_PERM,
9430                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9431         },
9432         {
9433                 .cmd = NL80211_CMD_REQ_SET_REG,
9434                 .doit = nl80211_req_set_reg,
9435                 .policy = nl80211_policy,
9436                 .flags = GENL_ADMIN_PERM,
9437         },
9438         {
9439                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9440                 .doit = nl80211_get_mesh_config,
9441                 .policy = nl80211_policy,
9442                 /* can be retrieved by unprivileged users */
9443                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9444                                   NL80211_FLAG_NEED_RTNL,
9445         },
9446         {
9447                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9448                 .doit = nl80211_update_mesh_config,
9449                 .policy = nl80211_policy,
9450                 .flags = GENL_ADMIN_PERM,
9451                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9452                                   NL80211_FLAG_NEED_RTNL,
9453         },
9454         {
9455                 .cmd = NL80211_CMD_TRIGGER_SCAN,
9456                 .doit = nl80211_trigger_scan,
9457                 .policy = nl80211_policy,
9458                 .flags = GENL_ADMIN_PERM,
9459                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9460                                   NL80211_FLAG_NEED_RTNL,
9461         },
9462         {
9463                 .cmd = NL80211_CMD_GET_SCAN,
9464                 .policy = nl80211_policy,
9465                 .dumpit = nl80211_dump_scan,
9466         },
9467         {
9468                 .cmd = NL80211_CMD_START_SCHED_SCAN,
9469                 .doit = nl80211_start_sched_scan,
9470                 .policy = nl80211_policy,
9471                 .flags = GENL_ADMIN_PERM,
9472                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9473                                   NL80211_FLAG_NEED_RTNL,
9474         },
9475         {
9476                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9477                 .doit = nl80211_stop_sched_scan,
9478                 .policy = nl80211_policy,
9479                 .flags = GENL_ADMIN_PERM,
9480                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9481                                   NL80211_FLAG_NEED_RTNL,
9482         },
9483         {
9484                 .cmd = NL80211_CMD_AUTHENTICATE,
9485                 .doit = nl80211_authenticate,
9486                 .policy = nl80211_policy,
9487                 .flags = GENL_ADMIN_PERM,
9488                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9489                                   NL80211_FLAG_NEED_RTNL,
9490         },
9491         {
9492                 .cmd = NL80211_CMD_ASSOCIATE,
9493                 .doit = nl80211_associate,
9494                 .policy = nl80211_policy,
9495                 .flags = GENL_ADMIN_PERM,
9496                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9497                                   NL80211_FLAG_NEED_RTNL,
9498         },
9499         {
9500                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9501                 .doit = nl80211_deauthenticate,
9502                 .policy = nl80211_policy,
9503                 .flags = GENL_ADMIN_PERM,
9504                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9505                                   NL80211_FLAG_NEED_RTNL,
9506         },
9507         {
9508                 .cmd = NL80211_CMD_DISASSOCIATE,
9509                 .doit = nl80211_disassociate,
9510                 .policy = nl80211_policy,
9511                 .flags = GENL_ADMIN_PERM,
9512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9513                                   NL80211_FLAG_NEED_RTNL,
9514         },
9515         {
9516                 .cmd = NL80211_CMD_JOIN_IBSS,
9517                 .doit = nl80211_join_ibss,
9518                 .policy = nl80211_policy,
9519                 .flags = GENL_ADMIN_PERM,
9520                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9521                                   NL80211_FLAG_NEED_RTNL,
9522         },
9523         {
9524                 .cmd = NL80211_CMD_LEAVE_IBSS,
9525                 .doit = nl80211_leave_ibss,
9526                 .policy = nl80211_policy,
9527                 .flags = GENL_ADMIN_PERM,
9528                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9529                                   NL80211_FLAG_NEED_RTNL,
9530         },
9531 #ifdef CONFIG_NL80211_TESTMODE
9532         {
9533                 .cmd = NL80211_CMD_TESTMODE,
9534                 .doit = nl80211_testmode_do,
9535                 .dumpit = nl80211_testmode_dump,
9536                 .policy = nl80211_policy,
9537                 .flags = GENL_ADMIN_PERM,
9538                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9539                                   NL80211_FLAG_NEED_RTNL,
9540         },
9541 #endif
9542         {
9543                 .cmd = NL80211_CMD_CONNECT,
9544                 .doit = nl80211_connect,
9545                 .policy = nl80211_policy,
9546                 .flags = GENL_ADMIN_PERM,
9547                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9548                                   NL80211_FLAG_NEED_RTNL,
9549         },
9550         {
9551                 .cmd = NL80211_CMD_DISCONNECT,
9552                 .doit = nl80211_disconnect,
9553                 .policy = nl80211_policy,
9554                 .flags = GENL_ADMIN_PERM,
9555                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9556                                   NL80211_FLAG_NEED_RTNL,
9557         },
9558         {
9559                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9560                 .doit = nl80211_wiphy_netns,
9561                 .policy = nl80211_policy,
9562                 .flags = GENL_ADMIN_PERM,
9563                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9564                                   NL80211_FLAG_NEED_RTNL,
9565         },
9566         {
9567                 .cmd = NL80211_CMD_GET_SURVEY,
9568                 .policy = nl80211_policy,
9569                 .dumpit = nl80211_dump_survey,
9570         },
9571         {
9572                 .cmd = NL80211_CMD_SET_PMKSA,
9573                 .doit = nl80211_setdel_pmksa,
9574                 .policy = nl80211_policy,
9575                 .flags = GENL_ADMIN_PERM,
9576                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9577                                   NL80211_FLAG_NEED_RTNL,
9578         },
9579         {
9580                 .cmd = NL80211_CMD_DEL_PMKSA,
9581                 .doit = nl80211_setdel_pmksa,
9582                 .policy = nl80211_policy,
9583                 .flags = GENL_ADMIN_PERM,
9584                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9585                                   NL80211_FLAG_NEED_RTNL,
9586         },
9587         {
9588                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9589                 .doit = nl80211_flush_pmksa,
9590                 .policy = nl80211_policy,
9591                 .flags = GENL_ADMIN_PERM,
9592                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9593                                   NL80211_FLAG_NEED_RTNL,
9594         },
9595         {
9596                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9597                 .doit = nl80211_remain_on_channel,
9598                 .policy = nl80211_policy,
9599                 .flags = GENL_ADMIN_PERM,
9600                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9601                                   NL80211_FLAG_NEED_RTNL,
9602         },
9603         {
9604                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9605                 .doit = nl80211_cancel_remain_on_channel,
9606                 .policy = nl80211_policy,
9607                 .flags = GENL_ADMIN_PERM,
9608                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9609                                   NL80211_FLAG_NEED_RTNL,
9610         },
9611         {
9612                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9613                 .doit = nl80211_set_tx_bitrate_mask,
9614                 .policy = nl80211_policy,
9615                 .flags = GENL_ADMIN_PERM,
9616                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9617                                   NL80211_FLAG_NEED_RTNL,
9618         },
9619         {
9620                 .cmd = NL80211_CMD_REGISTER_FRAME,
9621                 .doit = nl80211_register_mgmt,
9622                 .policy = nl80211_policy,
9623                 .flags = GENL_ADMIN_PERM,
9624                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9625                                   NL80211_FLAG_NEED_RTNL,
9626         },
9627         {
9628                 .cmd = NL80211_CMD_FRAME,
9629                 .doit = nl80211_tx_mgmt,
9630                 .policy = nl80211_policy,
9631                 .flags = GENL_ADMIN_PERM,
9632                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9633                                   NL80211_FLAG_NEED_RTNL,
9634         },
9635         {
9636                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9637                 .doit = nl80211_tx_mgmt_cancel_wait,
9638                 .policy = nl80211_policy,
9639                 .flags = GENL_ADMIN_PERM,
9640                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9641                                   NL80211_FLAG_NEED_RTNL,
9642         },
9643         {
9644                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9645                 .doit = nl80211_set_power_save,
9646                 .policy = nl80211_policy,
9647                 .flags = GENL_ADMIN_PERM,
9648                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9649                                   NL80211_FLAG_NEED_RTNL,
9650         },
9651         {
9652                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9653                 .doit = nl80211_get_power_save,
9654                 .policy = nl80211_policy,
9655                 /* can be retrieved by unprivileged users */
9656                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9657                                   NL80211_FLAG_NEED_RTNL,
9658         },
9659         {
9660                 .cmd = NL80211_CMD_SET_CQM,
9661                 .doit = nl80211_set_cqm,
9662                 .policy = nl80211_policy,
9663                 .flags = GENL_ADMIN_PERM,
9664                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9665                                   NL80211_FLAG_NEED_RTNL,
9666         },
9667         {
9668                 .cmd = NL80211_CMD_SET_CHANNEL,
9669                 .doit = nl80211_set_channel,
9670                 .policy = nl80211_policy,
9671                 .flags = GENL_ADMIN_PERM,
9672                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9673                                   NL80211_FLAG_NEED_RTNL,
9674         },
9675         {
9676                 .cmd = NL80211_CMD_SET_WDS_PEER,
9677                 .doit = nl80211_set_wds_peer,
9678                 .policy = nl80211_policy,
9679                 .flags = GENL_ADMIN_PERM,
9680                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9681                                   NL80211_FLAG_NEED_RTNL,
9682         },
9683         {
9684                 .cmd = NL80211_CMD_JOIN_MESH,
9685                 .doit = nl80211_join_mesh,
9686                 .policy = nl80211_policy,
9687                 .flags = GENL_ADMIN_PERM,
9688                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9689                                   NL80211_FLAG_NEED_RTNL,
9690         },
9691         {
9692                 .cmd = NL80211_CMD_LEAVE_MESH,
9693                 .doit = nl80211_leave_mesh,
9694                 .policy = nl80211_policy,
9695                 .flags = GENL_ADMIN_PERM,
9696                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9697                                   NL80211_FLAG_NEED_RTNL,
9698         },
9699 #ifdef CONFIG_PM
9700         {
9701                 .cmd = NL80211_CMD_GET_WOWLAN,
9702                 .doit = nl80211_get_wowlan,
9703                 .policy = nl80211_policy,
9704                 /* can be retrieved by unprivileged users */
9705                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9706                                   NL80211_FLAG_NEED_RTNL,
9707         },
9708         {
9709                 .cmd = NL80211_CMD_SET_WOWLAN,
9710                 .doit = nl80211_set_wowlan,
9711                 .policy = nl80211_policy,
9712                 .flags = GENL_ADMIN_PERM,
9713                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9714                                   NL80211_FLAG_NEED_RTNL,
9715         },
9716 #endif
9717         {
9718                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9719                 .doit = nl80211_set_rekey_data,
9720                 .policy = nl80211_policy,
9721                 .flags = GENL_ADMIN_PERM,
9722                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9723                                   NL80211_FLAG_NEED_RTNL,
9724         },
9725         {
9726                 .cmd = NL80211_CMD_TDLS_MGMT,
9727                 .doit = nl80211_tdls_mgmt,
9728                 .policy = nl80211_policy,
9729                 .flags = GENL_ADMIN_PERM,
9730                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9731                                   NL80211_FLAG_NEED_RTNL,
9732         },
9733         {
9734                 .cmd = NL80211_CMD_TDLS_OPER,
9735                 .doit = nl80211_tdls_oper,
9736                 .policy = nl80211_policy,
9737                 .flags = GENL_ADMIN_PERM,
9738                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9739                                   NL80211_FLAG_NEED_RTNL,
9740         },
9741         {
9742                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9743                 .doit = nl80211_register_unexpected_frame,
9744                 .policy = nl80211_policy,
9745                 .flags = GENL_ADMIN_PERM,
9746                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9747                                   NL80211_FLAG_NEED_RTNL,
9748         },
9749         {
9750                 .cmd = NL80211_CMD_PROBE_CLIENT,
9751                 .doit = nl80211_probe_client,
9752                 .policy = nl80211_policy,
9753                 .flags = GENL_ADMIN_PERM,
9754                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9755                                   NL80211_FLAG_NEED_RTNL,
9756         },
9757         {
9758                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9759                 .doit = nl80211_register_beacons,
9760                 .policy = nl80211_policy,
9761                 .flags = GENL_ADMIN_PERM,
9762                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9763                                   NL80211_FLAG_NEED_RTNL,
9764         },
9765         {
9766                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9767                 .doit = nl80211_set_noack_map,
9768                 .policy = nl80211_policy,
9769                 .flags = GENL_ADMIN_PERM,
9770                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9771                                   NL80211_FLAG_NEED_RTNL,
9772         },
9773         {
9774                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9775                 .doit = nl80211_start_p2p_device,
9776                 .policy = nl80211_policy,
9777                 .flags = GENL_ADMIN_PERM,
9778                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9779                                   NL80211_FLAG_NEED_RTNL,
9780         },
9781         {
9782                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9783                 .doit = nl80211_stop_p2p_device,
9784                 .policy = nl80211_policy,
9785                 .flags = GENL_ADMIN_PERM,
9786                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9787                                   NL80211_FLAG_NEED_RTNL,
9788         },
9789         {
9790                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9791                 .doit = nl80211_set_mcast_rate,
9792                 .policy = nl80211_policy,
9793                 .flags = GENL_ADMIN_PERM,
9794                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9795                                   NL80211_FLAG_NEED_RTNL,
9796         },
9797         {
9798                 .cmd = NL80211_CMD_SET_MAC_ACL,
9799                 .doit = nl80211_set_mac_acl,
9800                 .policy = nl80211_policy,
9801                 .flags = GENL_ADMIN_PERM,
9802                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9803                                   NL80211_FLAG_NEED_RTNL,
9804         },
9805         {
9806                 .cmd = NL80211_CMD_RADAR_DETECT,
9807                 .doit = nl80211_start_radar_detection,
9808                 .policy = nl80211_policy,
9809                 .flags = GENL_ADMIN_PERM,
9810                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9811                                   NL80211_FLAG_NEED_RTNL,
9812         },
9813         {
9814                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9815                 .doit = nl80211_get_protocol_features,
9816                 .policy = nl80211_policy,
9817         },
9818         {
9819                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9820                 .doit = nl80211_update_ft_ies,
9821                 .policy = nl80211_policy,
9822                 .flags = GENL_ADMIN_PERM,
9823                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9824                                   NL80211_FLAG_NEED_RTNL,
9825         },
9826         {
9827                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9828                 .doit = nl80211_crit_protocol_start,
9829                 .policy = nl80211_policy,
9830                 .flags = GENL_ADMIN_PERM,
9831                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9832                                   NL80211_FLAG_NEED_RTNL,
9833         },
9834         {
9835                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9836                 .doit = nl80211_crit_protocol_stop,
9837                 .policy = nl80211_policy,
9838                 .flags = GENL_ADMIN_PERM,
9839                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9840                                   NL80211_FLAG_NEED_RTNL,
9841         },
9842         {
9843                 .cmd = NL80211_CMD_GET_COALESCE,
9844                 .doit = nl80211_get_coalesce,
9845                 .policy = nl80211_policy,
9846                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9847                                   NL80211_FLAG_NEED_RTNL,
9848         },
9849         {
9850                 .cmd = NL80211_CMD_SET_COALESCE,
9851                 .doit = nl80211_set_coalesce,
9852                 .policy = nl80211_policy,
9853                 .flags = GENL_ADMIN_PERM,
9854                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9855                                   NL80211_FLAG_NEED_RTNL,
9856         },
9857         {
9858                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9859                 .doit = nl80211_channel_switch,
9860                 .policy = nl80211_policy,
9861                 .flags = GENL_ADMIN_PERM,
9862                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9863                                   NL80211_FLAG_NEED_RTNL,
9864         },
9865         {
9866                 .cmd = NL80211_CMD_VENDOR,
9867                 .doit = nl80211_vendor_cmd,
9868                 .policy = nl80211_policy,
9869                 .flags = GENL_ADMIN_PERM,
9870                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9871                                   NL80211_FLAG_NEED_RTNL,
9872         },
9873         {
9874                 .cmd = NL80211_CMD_SET_QOS_MAP,
9875                 .doit = nl80211_set_qos_map,
9876                 .policy = nl80211_policy,
9877                 .flags = GENL_ADMIN_PERM,
9878                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9879                                   NL80211_FLAG_NEED_RTNL,
9880         },
9881 };
9882
9883 /* notification functions */
9884
9885 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9886 {
9887         struct sk_buff *msg;
9888         struct nl80211_dump_wiphy_state state = {};
9889
9890         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9891         if (!msg)
9892                 return;
9893
9894         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9895                 nlmsg_free(msg);
9896                 return;
9897         }
9898
9899         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9900                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
9901 }
9902
9903 static int nl80211_add_scan_req(struct sk_buff *msg,
9904                                 struct cfg80211_registered_device *rdev)
9905 {
9906         struct cfg80211_scan_request *req = rdev->scan_req;
9907         struct nlattr *nest;
9908         int i;
9909
9910         if (WARN_ON(!req))
9911                 return 0;
9912
9913         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9914         if (!nest)
9915                 goto nla_put_failure;
9916         for (i = 0; i < req->n_ssids; i++) {
9917                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9918                         goto nla_put_failure;
9919         }
9920         nla_nest_end(msg, nest);
9921
9922         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9923         if (!nest)
9924                 goto nla_put_failure;
9925         for (i = 0; i < req->n_channels; i++) {
9926                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9927                         goto nla_put_failure;
9928         }
9929         nla_nest_end(msg, nest);
9930
9931         if (req->ie &&
9932             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9933                 goto nla_put_failure;
9934
9935         if (req->flags &&
9936             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
9937                 goto nla_put_failure;
9938
9939         return 0;
9940  nla_put_failure:
9941         return -ENOBUFS;
9942 }
9943
9944 static int nl80211_send_scan_msg(struct sk_buff *msg,
9945                                  struct cfg80211_registered_device *rdev,
9946                                  struct wireless_dev *wdev,
9947                                  u32 portid, u32 seq, int flags,
9948                                  u32 cmd)
9949 {
9950         void *hdr;
9951
9952         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9953         if (!hdr)
9954                 return -1;
9955
9956         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9957             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9958                                          wdev->netdev->ifindex)) ||
9959             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9960                 goto nla_put_failure;
9961
9962         /* ignore errors and send incomplete event anyway */
9963         nl80211_add_scan_req(msg, rdev);
9964
9965         return genlmsg_end(msg, hdr);
9966
9967  nla_put_failure:
9968         genlmsg_cancel(msg, hdr);
9969         return -EMSGSIZE;
9970 }
9971
9972 static int
9973 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9974                             struct cfg80211_registered_device *rdev,
9975                             struct net_device *netdev,
9976                             u32 portid, u32 seq, int flags, u32 cmd)
9977 {
9978         void *hdr;
9979
9980         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9981         if (!hdr)
9982                 return -1;
9983
9984         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9985             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9986                 goto nla_put_failure;
9987
9988         return genlmsg_end(msg, hdr);
9989
9990  nla_put_failure:
9991         genlmsg_cancel(msg, hdr);
9992         return -EMSGSIZE;
9993 }
9994
9995 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9996                              struct wireless_dev *wdev)
9997 {
9998         struct sk_buff *msg;
9999
10000         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10001         if (!msg)
10002                 return;
10003
10004         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10005                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
10006                 nlmsg_free(msg);
10007                 return;
10008         }
10009
10010         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10011                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10012 }
10013
10014 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
10015                             struct wireless_dev *wdev)
10016 {
10017         struct sk_buff *msg;
10018
10019         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10020         if (!msg)
10021                 return;
10022
10023         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10024                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10025                 nlmsg_free(msg);
10026                 return;
10027         }
10028
10029         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10030                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10031 }
10032
10033 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
10034                                struct wireless_dev *wdev)
10035 {
10036         struct sk_buff *msg;
10037
10038         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10039         if (!msg)
10040                 return;
10041
10042         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10043                                   NL80211_CMD_SCAN_ABORTED) < 0) {
10044                 nlmsg_free(msg);
10045                 return;
10046         }
10047
10048         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10049                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10050 }
10051
10052 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10053                                      struct net_device *netdev)
10054 {
10055         struct sk_buff *msg;
10056
10057         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10058         if (!msg)
10059                 return;
10060
10061         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10062                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10063                 nlmsg_free(msg);
10064                 return;
10065         }
10066
10067         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10068                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10069 }
10070
10071 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10072                              struct net_device *netdev, u32 cmd)
10073 {
10074         struct sk_buff *msg;
10075
10076         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10077         if (!msg)
10078                 return;
10079
10080         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10081                 nlmsg_free(msg);
10082                 return;
10083         }
10084
10085         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10086                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10087 }
10088
10089 /*
10090  * This can happen on global regulatory changes or device specific settings
10091  * based on custom world regulatory domains.
10092  */
10093 void nl80211_send_reg_change_event(struct regulatory_request *request)
10094 {
10095         struct sk_buff *msg;
10096         void *hdr;
10097
10098         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10099         if (!msg)
10100                 return;
10101
10102         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10103         if (!hdr) {
10104                 nlmsg_free(msg);
10105                 return;
10106         }
10107
10108         /* Userspace can always count this one always being set */
10109         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10110                 goto nla_put_failure;
10111
10112         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10113                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10114                                NL80211_REGDOM_TYPE_WORLD))
10115                         goto nla_put_failure;
10116         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10117                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10118                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10119                         goto nla_put_failure;
10120         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10121                    request->intersect) {
10122                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10123                                NL80211_REGDOM_TYPE_INTERSECTION))
10124                         goto nla_put_failure;
10125         } else {
10126                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10127                                NL80211_REGDOM_TYPE_COUNTRY) ||
10128                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10129                                    request->alpha2))
10130                         goto nla_put_failure;
10131         }
10132
10133         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10134             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10135                 goto nla_put_failure;
10136
10137         genlmsg_end(msg, hdr);
10138
10139         rcu_read_lock();
10140         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10141                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10142         rcu_read_unlock();
10143
10144         return;
10145
10146 nla_put_failure:
10147         genlmsg_cancel(msg, hdr);
10148         nlmsg_free(msg);
10149 }
10150
10151 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10152                                     struct net_device *netdev,
10153                                     const u8 *buf, size_t len,
10154                                     enum nl80211_commands cmd, gfp_t gfp)
10155 {
10156         struct sk_buff *msg;
10157         void *hdr;
10158
10159         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10160         if (!msg)
10161                 return;
10162
10163         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10164         if (!hdr) {
10165                 nlmsg_free(msg);
10166                 return;
10167         }
10168
10169         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10170             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10171             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10172                 goto nla_put_failure;
10173
10174         genlmsg_end(msg, hdr);
10175
10176         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10177                                 NL80211_MCGRP_MLME, gfp);
10178         return;
10179
10180  nla_put_failure:
10181         genlmsg_cancel(msg, hdr);
10182         nlmsg_free(msg);
10183 }
10184
10185 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10186                           struct net_device *netdev, const u8 *buf,
10187                           size_t len, gfp_t gfp)
10188 {
10189         nl80211_send_mlme_event(rdev, netdev, buf, len,
10190                                 NL80211_CMD_AUTHENTICATE, gfp);
10191 }
10192
10193 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10194                            struct net_device *netdev, const u8 *buf,
10195                            size_t len, gfp_t gfp)
10196 {
10197         nl80211_send_mlme_event(rdev, netdev, buf, len,
10198                                 NL80211_CMD_ASSOCIATE, gfp);
10199 }
10200
10201 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10202                          struct net_device *netdev, const u8 *buf,
10203                          size_t len, gfp_t gfp)
10204 {
10205         nl80211_send_mlme_event(rdev, netdev, buf, len,
10206                                 NL80211_CMD_DEAUTHENTICATE, gfp);
10207 }
10208
10209 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10210                            struct net_device *netdev, const u8 *buf,
10211                            size_t len, gfp_t gfp)
10212 {
10213         nl80211_send_mlme_event(rdev, netdev, buf, len,
10214                                 NL80211_CMD_DISASSOCIATE, gfp);
10215 }
10216
10217 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10218                                   size_t len)
10219 {
10220         struct wireless_dev *wdev = dev->ieee80211_ptr;
10221         struct wiphy *wiphy = wdev->wiphy;
10222         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10223         const struct ieee80211_mgmt *mgmt = (void *)buf;
10224         u32 cmd;
10225
10226         if (WARN_ON(len < 2))
10227                 return;
10228
10229         if (ieee80211_is_deauth(mgmt->frame_control))
10230                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10231         else
10232                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10233
10234         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10235         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
10236 }
10237 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10238
10239 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10240                                       struct net_device *netdev, int cmd,
10241                                       const u8 *addr, gfp_t gfp)
10242 {
10243         struct sk_buff *msg;
10244         void *hdr;
10245
10246         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10247         if (!msg)
10248                 return;
10249
10250         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10251         if (!hdr) {
10252                 nlmsg_free(msg);
10253                 return;
10254         }
10255
10256         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10257             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10258             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10259             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10260                 goto nla_put_failure;
10261
10262         genlmsg_end(msg, hdr);
10263
10264         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10265                                 NL80211_MCGRP_MLME, gfp);
10266         return;
10267
10268  nla_put_failure:
10269         genlmsg_cancel(msg, hdr);
10270         nlmsg_free(msg);
10271 }
10272
10273 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10274                                struct net_device *netdev, const u8 *addr,
10275                                gfp_t gfp)
10276 {
10277         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10278                                   addr, gfp);
10279 }
10280
10281 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10282                                 struct net_device *netdev, const u8 *addr,
10283                                 gfp_t gfp)
10284 {
10285         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10286                                   addr, gfp);
10287 }
10288
10289 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10290                                  struct net_device *netdev, const u8 *bssid,
10291                                  const u8 *req_ie, size_t req_ie_len,
10292                                  const u8 *resp_ie, size_t resp_ie_len,
10293                                  u16 status, gfp_t gfp)
10294 {
10295         struct sk_buff *msg;
10296         void *hdr;
10297
10298         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10299         if (!msg)
10300                 return;
10301
10302         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10303         if (!hdr) {
10304                 nlmsg_free(msg);
10305                 return;
10306         }
10307
10308         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10309             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10310             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10311             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10312             (req_ie &&
10313              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10314             (resp_ie &&
10315              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10316                 goto nla_put_failure;
10317
10318         genlmsg_end(msg, hdr);
10319
10320         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10321                                 NL80211_MCGRP_MLME, gfp);
10322         return;
10323
10324  nla_put_failure:
10325         genlmsg_cancel(msg, hdr);
10326         nlmsg_free(msg);
10327
10328 }
10329
10330 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10331                          struct net_device *netdev, const u8 *bssid,
10332                          const u8 *req_ie, size_t req_ie_len,
10333                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10334 {
10335         struct sk_buff *msg;
10336         void *hdr;
10337
10338         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10339         if (!msg)
10340                 return;
10341
10342         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10343         if (!hdr) {
10344                 nlmsg_free(msg);
10345                 return;
10346         }
10347
10348         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10349             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10350             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10351             (req_ie &&
10352              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10353             (resp_ie &&
10354              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10355                 goto nla_put_failure;
10356
10357         genlmsg_end(msg, hdr);
10358
10359         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10360                                 NL80211_MCGRP_MLME, gfp);
10361         return;
10362
10363  nla_put_failure:
10364         genlmsg_cancel(msg, hdr);
10365         nlmsg_free(msg);
10366
10367 }
10368
10369 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10370                                struct net_device *netdev, u16 reason,
10371                                const u8 *ie, size_t ie_len, bool from_ap)
10372 {
10373         struct sk_buff *msg;
10374         void *hdr;
10375
10376         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10377         if (!msg)
10378                 return;
10379
10380         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10381         if (!hdr) {
10382                 nlmsg_free(msg);
10383                 return;
10384         }
10385
10386         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10387             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10388             (from_ap && reason &&
10389              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10390             (from_ap &&
10391              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10392             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10393                 goto nla_put_failure;
10394
10395         genlmsg_end(msg, hdr);
10396
10397         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10398                                 NL80211_MCGRP_MLME, GFP_KERNEL);
10399         return;
10400
10401  nla_put_failure:
10402         genlmsg_cancel(msg, hdr);
10403         nlmsg_free(msg);
10404
10405 }
10406
10407 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10408                              struct net_device *netdev, const u8 *bssid,
10409                              gfp_t gfp)
10410 {
10411         struct sk_buff *msg;
10412         void *hdr;
10413
10414         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10415         if (!msg)
10416                 return;
10417
10418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10419         if (!hdr) {
10420                 nlmsg_free(msg);
10421                 return;
10422         }
10423
10424         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10425             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10426             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10427                 goto nla_put_failure;
10428
10429         genlmsg_end(msg, hdr);
10430
10431         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10432                                 NL80211_MCGRP_MLME, gfp);
10433         return;
10434
10435  nla_put_failure:
10436         genlmsg_cancel(msg, hdr);
10437         nlmsg_free(msg);
10438 }
10439
10440 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10441                                         const u8* ie, u8 ie_len, gfp_t gfp)
10442 {
10443         struct wireless_dev *wdev = dev->ieee80211_ptr;
10444         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10445         struct sk_buff *msg;
10446         void *hdr;
10447
10448         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10449                 return;
10450
10451         trace_cfg80211_notify_new_peer_candidate(dev, addr);
10452
10453         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10454         if (!msg)
10455                 return;
10456
10457         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10458         if (!hdr) {
10459                 nlmsg_free(msg);
10460                 return;
10461         }
10462
10463         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10464             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10465             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10466             (ie_len && ie &&
10467              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10468                 goto nla_put_failure;
10469
10470         genlmsg_end(msg, hdr);
10471
10472         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10473                                 NL80211_MCGRP_MLME, gfp);
10474         return;
10475
10476  nla_put_failure:
10477         genlmsg_cancel(msg, hdr);
10478         nlmsg_free(msg);
10479 }
10480 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10481
10482 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10483                                  struct net_device *netdev, const u8 *addr,
10484                                  enum nl80211_key_type key_type, int key_id,
10485                                  const u8 *tsc, gfp_t gfp)
10486 {
10487         struct sk_buff *msg;
10488         void *hdr;
10489
10490         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10491         if (!msg)
10492                 return;
10493
10494         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10495         if (!hdr) {
10496                 nlmsg_free(msg);
10497                 return;
10498         }
10499
10500         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10501             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10502             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10503             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10504             (key_id != -1 &&
10505              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10506             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10507                 goto nla_put_failure;
10508
10509         genlmsg_end(msg, hdr);
10510
10511         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10512                                 NL80211_MCGRP_MLME, gfp);
10513         return;
10514
10515  nla_put_failure:
10516         genlmsg_cancel(msg, hdr);
10517         nlmsg_free(msg);
10518 }
10519
10520 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10521                                     struct ieee80211_channel *channel_before,
10522                                     struct ieee80211_channel *channel_after)
10523 {
10524         struct sk_buff *msg;
10525         void *hdr;
10526         struct nlattr *nl_freq;
10527
10528         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10529         if (!msg)
10530                 return;
10531
10532         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10533         if (!hdr) {
10534                 nlmsg_free(msg);
10535                 return;
10536         }
10537
10538         /*
10539          * Since we are applying the beacon hint to a wiphy we know its
10540          * wiphy_idx is valid
10541          */
10542         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10543                 goto nla_put_failure;
10544
10545         /* Before */
10546         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10547         if (!nl_freq)
10548                 goto nla_put_failure;
10549         if (nl80211_msg_put_channel(msg, channel_before, false))
10550                 goto nla_put_failure;
10551         nla_nest_end(msg, nl_freq);
10552
10553         /* After */
10554         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10555         if (!nl_freq)
10556                 goto nla_put_failure;
10557         if (nl80211_msg_put_channel(msg, channel_after, false))
10558                 goto nla_put_failure;
10559         nla_nest_end(msg, nl_freq);
10560
10561         genlmsg_end(msg, hdr);
10562
10563         rcu_read_lock();
10564         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10565                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10566         rcu_read_unlock();
10567
10568         return;
10569
10570 nla_put_failure:
10571         genlmsg_cancel(msg, hdr);
10572         nlmsg_free(msg);
10573 }
10574
10575 static void nl80211_send_remain_on_chan_event(
10576         int cmd, struct cfg80211_registered_device *rdev,
10577         struct wireless_dev *wdev, u64 cookie,
10578         struct ieee80211_channel *chan,
10579         unsigned int duration, gfp_t gfp)
10580 {
10581         struct sk_buff *msg;
10582         void *hdr;
10583
10584         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10585         if (!msg)
10586                 return;
10587
10588         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10589         if (!hdr) {
10590                 nlmsg_free(msg);
10591                 return;
10592         }
10593
10594         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10595             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10596                                          wdev->netdev->ifindex)) ||
10597             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10598             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10599             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10600                         NL80211_CHAN_NO_HT) ||
10601             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10602                 goto nla_put_failure;
10603
10604         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10605             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10606                 goto nla_put_failure;
10607
10608         genlmsg_end(msg, hdr);
10609
10610         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10611                                 NL80211_MCGRP_MLME, gfp);
10612         return;
10613
10614  nla_put_failure:
10615         genlmsg_cancel(msg, hdr);
10616         nlmsg_free(msg);
10617 }
10618
10619 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10620                                struct ieee80211_channel *chan,
10621                                unsigned int duration, gfp_t gfp)
10622 {
10623         struct wiphy *wiphy = wdev->wiphy;
10624         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10625
10626         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10627         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10628                                           rdev, wdev, cookie, chan,
10629                                           duration, gfp);
10630 }
10631 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10632
10633 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10634                                         struct ieee80211_channel *chan,
10635                                         gfp_t gfp)
10636 {
10637         struct wiphy *wiphy = wdev->wiphy;
10638         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10639
10640         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10641         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10642                                           rdev, wdev, cookie, chan, 0, gfp);
10643 }
10644 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10645
10646 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10647                       struct station_info *sinfo, gfp_t gfp)
10648 {
10649         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10650         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10651         struct sk_buff *msg;
10652
10653         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10654
10655         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10656         if (!msg)
10657                 return;
10658
10659         if (nl80211_send_station(msg, 0, 0, 0,
10660                                  rdev, dev, mac_addr, sinfo) < 0) {
10661                 nlmsg_free(msg);
10662                 return;
10663         }
10664
10665         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10666                                 NL80211_MCGRP_MLME, gfp);
10667 }
10668 EXPORT_SYMBOL(cfg80211_new_sta);
10669
10670 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10671 {
10672         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10673         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10674         struct sk_buff *msg;
10675         void *hdr;
10676
10677         trace_cfg80211_del_sta(dev, mac_addr);
10678
10679         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10680         if (!msg)
10681                 return;
10682
10683         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10684         if (!hdr) {
10685                 nlmsg_free(msg);
10686                 return;
10687         }
10688
10689         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10690             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10691                 goto nla_put_failure;
10692
10693         genlmsg_end(msg, hdr);
10694
10695         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10696                                 NL80211_MCGRP_MLME, gfp);
10697         return;
10698
10699  nla_put_failure:
10700         genlmsg_cancel(msg, hdr);
10701         nlmsg_free(msg);
10702 }
10703 EXPORT_SYMBOL(cfg80211_del_sta);
10704
10705 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10706                           enum nl80211_connect_failed_reason reason,
10707                           gfp_t gfp)
10708 {
10709         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10710         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10711         struct sk_buff *msg;
10712         void *hdr;
10713
10714         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10715         if (!msg)
10716                 return;
10717
10718         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10719         if (!hdr) {
10720                 nlmsg_free(msg);
10721                 return;
10722         }
10723
10724         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10725             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10726             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10727                 goto nla_put_failure;
10728
10729         genlmsg_end(msg, hdr);
10730
10731         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10732                                 NL80211_MCGRP_MLME, gfp);
10733         return;
10734
10735  nla_put_failure:
10736         genlmsg_cancel(msg, hdr);
10737         nlmsg_free(msg);
10738 }
10739 EXPORT_SYMBOL(cfg80211_conn_failed);
10740
10741 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10742                                        const u8 *addr, gfp_t gfp)
10743 {
10744         struct wireless_dev *wdev = dev->ieee80211_ptr;
10745         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10746         struct sk_buff *msg;
10747         void *hdr;
10748         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10749
10750         if (!nlportid)
10751                 return false;
10752
10753         msg = nlmsg_new(100, gfp);
10754         if (!msg)
10755                 return true;
10756
10757         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10758         if (!hdr) {
10759                 nlmsg_free(msg);
10760                 return true;
10761         }
10762
10763         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10764             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10765             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10766                 goto nla_put_failure;
10767
10768         genlmsg_end(msg, hdr);
10769         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10770         return true;
10771
10772  nla_put_failure:
10773         genlmsg_cancel(msg, hdr);
10774         nlmsg_free(msg);
10775         return true;
10776 }
10777
10778 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10779                                 const u8 *addr, gfp_t gfp)
10780 {
10781         struct wireless_dev *wdev = dev->ieee80211_ptr;
10782         bool ret;
10783
10784         trace_cfg80211_rx_spurious_frame(dev, addr);
10785
10786         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10787                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10788                 trace_cfg80211_return_bool(false);
10789                 return false;
10790         }
10791         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10792                                          addr, gfp);
10793         trace_cfg80211_return_bool(ret);
10794         return ret;
10795 }
10796 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10797
10798 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10799                                         const u8 *addr, gfp_t gfp)
10800 {
10801         struct wireless_dev *wdev = dev->ieee80211_ptr;
10802         bool ret;
10803
10804         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10805
10806         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10807                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10808                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10809                 trace_cfg80211_return_bool(false);
10810                 return false;
10811         }
10812         ret = __nl80211_unexpected_frame(dev,
10813                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10814                                          addr, gfp);
10815         trace_cfg80211_return_bool(ret);
10816         return ret;
10817 }
10818 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10819
10820 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10821                       struct wireless_dev *wdev, u32 nlportid,
10822                       int freq, int sig_dbm,
10823                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10824 {
10825         struct net_device *netdev = wdev->netdev;
10826         struct sk_buff *msg;
10827         void *hdr;
10828
10829         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10830         if (!msg)
10831                 return -ENOMEM;
10832
10833         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10834         if (!hdr) {
10835                 nlmsg_free(msg);
10836                 return -ENOMEM;
10837         }
10838
10839         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10840             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10841                                         netdev->ifindex)) ||
10842             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10843             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10844             (sig_dbm &&
10845              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10846             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10847             (flags &&
10848              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10849                 goto nla_put_failure;
10850
10851         genlmsg_end(msg, hdr);
10852
10853         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10854
10855  nla_put_failure:
10856         genlmsg_cancel(msg, hdr);
10857         nlmsg_free(msg);
10858         return -ENOBUFS;
10859 }
10860
10861 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10862                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10863 {
10864         struct wiphy *wiphy = wdev->wiphy;
10865         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10866         struct net_device *netdev = wdev->netdev;
10867         struct sk_buff *msg;
10868         void *hdr;
10869
10870         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10871
10872         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10873         if (!msg)
10874                 return;
10875
10876         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10877         if (!hdr) {
10878                 nlmsg_free(msg);
10879                 return;
10880         }
10881
10882         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10883             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10884                                    netdev->ifindex)) ||
10885             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10886             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10887             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10888             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10889                 goto nla_put_failure;
10890
10891         genlmsg_end(msg, hdr);
10892
10893         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10894                                 NL80211_MCGRP_MLME, gfp);
10895         return;
10896
10897  nla_put_failure:
10898         genlmsg_cancel(msg, hdr);
10899         nlmsg_free(msg);
10900 }
10901 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10902
10903 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10904                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10905                               gfp_t gfp)
10906 {
10907         struct wireless_dev *wdev = dev->ieee80211_ptr;
10908         struct wiphy *wiphy = wdev->wiphy;
10909         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10910         struct sk_buff *msg;
10911         struct nlattr *pinfoattr;
10912         void *hdr;
10913
10914         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10915
10916         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10917         if (!msg)
10918                 return;
10919
10920         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10921         if (!hdr) {
10922                 nlmsg_free(msg);
10923                 return;
10924         }
10925
10926         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10927             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10928                 goto nla_put_failure;
10929
10930         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10931         if (!pinfoattr)
10932                 goto nla_put_failure;
10933
10934         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10935                         rssi_event))
10936                 goto nla_put_failure;
10937
10938         nla_nest_end(msg, pinfoattr);
10939
10940         genlmsg_end(msg, hdr);
10941
10942         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10943                                 NL80211_MCGRP_MLME, gfp);
10944         return;
10945
10946  nla_put_failure:
10947         genlmsg_cancel(msg, hdr);
10948         nlmsg_free(msg);
10949 }
10950 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10951
10952 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10953                                      struct net_device *netdev, const u8 *bssid,
10954                                      const u8 *replay_ctr, gfp_t gfp)
10955 {
10956         struct sk_buff *msg;
10957         struct nlattr *rekey_attr;
10958         void *hdr;
10959
10960         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10961         if (!msg)
10962                 return;
10963
10964         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10965         if (!hdr) {
10966                 nlmsg_free(msg);
10967                 return;
10968         }
10969
10970         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10971             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10972             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10973                 goto nla_put_failure;
10974
10975         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10976         if (!rekey_attr)
10977                 goto nla_put_failure;
10978
10979         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10980                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10981                 goto nla_put_failure;
10982
10983         nla_nest_end(msg, rekey_attr);
10984
10985         genlmsg_end(msg, hdr);
10986
10987         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10988                                 NL80211_MCGRP_MLME, gfp);
10989         return;
10990
10991  nla_put_failure:
10992         genlmsg_cancel(msg, hdr);
10993         nlmsg_free(msg);
10994 }
10995
10996 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10997                                const u8 *replay_ctr, gfp_t gfp)
10998 {
10999         struct wireless_dev *wdev = dev->ieee80211_ptr;
11000         struct wiphy *wiphy = wdev->wiphy;
11001         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11002
11003         trace_cfg80211_gtk_rekey_notify(dev, bssid);
11004         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11005 }
11006 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11007
11008 static void
11009 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11010                                struct net_device *netdev, int index,
11011                                const u8 *bssid, bool preauth, gfp_t gfp)
11012 {
11013         struct sk_buff *msg;
11014         struct nlattr *attr;
11015         void *hdr;
11016
11017         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11018         if (!msg)
11019                 return;
11020
11021         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11022         if (!hdr) {
11023                 nlmsg_free(msg);
11024                 return;
11025         }
11026
11027         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11028             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11029                 goto nla_put_failure;
11030
11031         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11032         if (!attr)
11033                 goto nla_put_failure;
11034
11035         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11036             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11037             (preauth &&
11038              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11039                 goto nla_put_failure;
11040
11041         nla_nest_end(msg, attr);
11042
11043         genlmsg_end(msg, hdr);
11044
11045         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11046                                 NL80211_MCGRP_MLME, gfp);
11047         return;
11048
11049  nla_put_failure:
11050         genlmsg_cancel(msg, hdr);
11051         nlmsg_free(msg);
11052 }
11053
11054 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11055                                      const u8 *bssid, bool preauth, gfp_t gfp)
11056 {
11057         struct wireless_dev *wdev = dev->ieee80211_ptr;
11058         struct wiphy *wiphy = wdev->wiphy;
11059         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11060
11061         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11062         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11063 }
11064 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11065
11066 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11067                                      struct net_device *netdev,
11068                                      struct cfg80211_chan_def *chandef,
11069                                      gfp_t gfp)
11070 {
11071         struct sk_buff *msg;
11072         void *hdr;
11073
11074         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11075         if (!msg)
11076                 return;
11077
11078         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11079         if (!hdr) {
11080                 nlmsg_free(msg);
11081                 return;
11082         }
11083
11084         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11085                 goto nla_put_failure;
11086
11087         if (nl80211_send_chandef(msg, chandef))
11088                 goto nla_put_failure;
11089
11090         genlmsg_end(msg, hdr);
11091
11092         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11093                                 NL80211_MCGRP_MLME, gfp);
11094         return;
11095
11096  nla_put_failure:
11097         genlmsg_cancel(msg, hdr);
11098         nlmsg_free(msg);
11099 }
11100
11101 void cfg80211_ch_switch_notify(struct net_device *dev,
11102                                struct cfg80211_chan_def *chandef)
11103 {
11104         struct wireless_dev *wdev = dev->ieee80211_ptr;
11105         struct wiphy *wiphy = wdev->wiphy;
11106         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11107
11108         ASSERT_WDEV_LOCK(wdev);
11109
11110         trace_cfg80211_ch_switch_notify(dev, chandef);
11111
11112         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11113                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11114                     wdev->iftype != NL80211_IFTYPE_ADHOC &&
11115                     wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11116                 return;
11117
11118         wdev->channel = chandef->chan;
11119         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11120 }
11121 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11122
11123 void cfg80211_cqm_txe_notify(struct net_device *dev,
11124                              const u8 *peer, u32 num_packets,
11125                              u32 rate, u32 intvl, gfp_t gfp)
11126 {
11127         struct wireless_dev *wdev = dev->ieee80211_ptr;
11128         struct wiphy *wiphy = wdev->wiphy;
11129         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11130         struct sk_buff *msg;
11131         struct nlattr *pinfoattr;
11132         void *hdr;
11133
11134         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11135         if (!msg)
11136                 return;
11137
11138         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11139         if (!hdr) {
11140                 nlmsg_free(msg);
11141                 return;
11142         }
11143
11144         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11145             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11146             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11147                 goto nla_put_failure;
11148
11149         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11150         if (!pinfoattr)
11151                 goto nla_put_failure;
11152
11153         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11154                 goto nla_put_failure;
11155
11156         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11157                 goto nla_put_failure;
11158
11159         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11160                 goto nla_put_failure;
11161
11162         nla_nest_end(msg, pinfoattr);
11163
11164         genlmsg_end(msg, hdr);
11165
11166         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11167                                 NL80211_MCGRP_MLME, gfp);
11168         return;
11169
11170  nla_put_failure:
11171         genlmsg_cancel(msg, hdr);
11172         nlmsg_free(msg);
11173 }
11174 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11175
11176 void
11177 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11178                      const struct cfg80211_chan_def *chandef,
11179                      enum nl80211_radar_event event,
11180                      struct net_device *netdev, gfp_t gfp)
11181 {
11182         struct sk_buff *msg;
11183         void *hdr;
11184
11185         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11186         if (!msg)
11187                 return;
11188
11189         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11190         if (!hdr) {
11191                 nlmsg_free(msg);
11192                 return;
11193         }
11194
11195         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11196                 goto nla_put_failure;
11197
11198         /* NOP and radar events don't need a netdev parameter */
11199         if (netdev) {
11200                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11201
11202                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11203                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11204                         goto nla_put_failure;
11205         }
11206
11207         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11208                 goto nla_put_failure;
11209
11210         if (nl80211_send_chandef(msg, chandef))
11211                 goto nla_put_failure;
11212
11213         genlmsg_end(msg, hdr);
11214
11215         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11216                                 NL80211_MCGRP_MLME, gfp);
11217         return;
11218
11219  nla_put_failure:
11220         genlmsg_cancel(msg, hdr);
11221         nlmsg_free(msg);
11222 }
11223
11224 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11225                                  const u8 *peer, u32 num_packets, gfp_t gfp)
11226 {
11227         struct wireless_dev *wdev = dev->ieee80211_ptr;
11228         struct wiphy *wiphy = wdev->wiphy;
11229         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11230         struct sk_buff *msg;
11231         struct nlattr *pinfoattr;
11232         void *hdr;
11233
11234         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11235
11236         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11237         if (!msg)
11238                 return;
11239
11240         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11241         if (!hdr) {
11242                 nlmsg_free(msg);
11243                 return;
11244         }
11245
11246         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11247             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11248             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11249                 goto nla_put_failure;
11250
11251         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11252         if (!pinfoattr)
11253                 goto nla_put_failure;
11254
11255         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11256                 goto nla_put_failure;
11257
11258         nla_nest_end(msg, pinfoattr);
11259
11260         genlmsg_end(msg, hdr);
11261
11262         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11263                                 NL80211_MCGRP_MLME, gfp);
11264         return;
11265
11266  nla_put_failure:
11267         genlmsg_cancel(msg, hdr);
11268         nlmsg_free(msg);
11269 }
11270 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11271
11272 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11273                            u64 cookie, bool acked, gfp_t gfp)
11274 {
11275         struct wireless_dev *wdev = dev->ieee80211_ptr;
11276         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11277         struct sk_buff *msg;
11278         void *hdr;
11279
11280         trace_cfg80211_probe_status(dev, addr, cookie, acked);
11281
11282         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11283
11284         if (!msg)
11285                 return;
11286
11287         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11288         if (!hdr) {
11289                 nlmsg_free(msg);
11290                 return;
11291         }
11292
11293         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11294             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11295             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11296             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11297             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11298                 goto nla_put_failure;
11299
11300         genlmsg_end(msg, hdr);
11301
11302         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11303                                 NL80211_MCGRP_MLME, gfp);
11304         return;
11305
11306  nla_put_failure:
11307         genlmsg_cancel(msg, hdr);
11308         nlmsg_free(msg);
11309 }
11310 EXPORT_SYMBOL(cfg80211_probe_status);
11311
11312 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11313                                  const u8 *frame, size_t len,
11314                                  int freq, int sig_dbm)
11315 {
11316         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11317         struct sk_buff *msg;
11318         void *hdr;
11319         struct cfg80211_beacon_registration *reg;
11320
11321         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11322
11323         spin_lock_bh(&rdev->beacon_registrations_lock);
11324         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11325                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11326                 if (!msg) {
11327                         spin_unlock_bh(&rdev->beacon_registrations_lock);
11328                         return;
11329                 }
11330
11331                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11332                 if (!hdr)
11333                         goto nla_put_failure;
11334
11335                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11336                     (freq &&
11337                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11338                     (sig_dbm &&
11339                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11340                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11341                         goto nla_put_failure;
11342
11343                 genlmsg_end(msg, hdr);
11344
11345                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11346         }
11347         spin_unlock_bh(&rdev->beacon_registrations_lock);
11348         return;
11349
11350  nla_put_failure:
11351         spin_unlock_bh(&rdev->beacon_registrations_lock);
11352         if (hdr)
11353                 genlmsg_cancel(msg, hdr);
11354         nlmsg_free(msg);
11355 }
11356 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11357
11358 #ifdef CONFIG_PM
11359 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11360                                    struct cfg80211_wowlan_wakeup *wakeup,
11361                                    gfp_t gfp)
11362 {
11363         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11364         struct sk_buff *msg;
11365         void *hdr;
11366         int size = 200;
11367
11368         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11369
11370         if (wakeup)
11371                 size += wakeup->packet_present_len;
11372
11373         msg = nlmsg_new(size, gfp);
11374         if (!msg)
11375                 return;
11376
11377         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11378         if (!hdr)
11379                 goto free_msg;
11380
11381         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11382             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11383                 goto free_msg;
11384
11385         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11386                                         wdev->netdev->ifindex))
11387                 goto free_msg;
11388
11389         if (wakeup) {
11390                 struct nlattr *reasons;
11391
11392                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11393                 if (!reasons)
11394                         goto free_msg;
11395
11396                 if (wakeup->disconnect &&
11397                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11398                         goto free_msg;
11399                 if (wakeup->magic_pkt &&
11400                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11401                         goto free_msg;
11402                 if (wakeup->gtk_rekey_failure &&
11403                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11404                         goto free_msg;
11405                 if (wakeup->eap_identity_req &&
11406                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11407                         goto free_msg;
11408                 if (wakeup->four_way_handshake &&
11409                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11410                         goto free_msg;
11411                 if (wakeup->rfkill_release &&
11412                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11413                         goto free_msg;
11414
11415                 if (wakeup->pattern_idx >= 0 &&
11416                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11417                                 wakeup->pattern_idx))
11418                         goto free_msg;
11419
11420                 if (wakeup->tcp_match &&
11421                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11422                         goto free_msg;
11423
11424                 if (wakeup->tcp_connlost &&
11425                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11426                         goto free_msg;
11427
11428                 if (wakeup->tcp_nomoretokens &&
11429                     nla_put_flag(msg,
11430                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11431                         goto free_msg;
11432
11433                 if (wakeup->packet) {
11434                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11435                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11436
11437                         if (!wakeup->packet_80211) {
11438                                 pkt_attr =
11439                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11440                                 len_attr =
11441                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11442                         }
11443
11444                         if (wakeup->packet_len &&
11445                             nla_put_u32(msg, len_attr, wakeup->packet_len))
11446                                 goto free_msg;
11447
11448                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11449                                     wakeup->packet))
11450                                 goto free_msg;
11451                 }
11452
11453                 nla_nest_end(msg, reasons);
11454         }
11455
11456         genlmsg_end(msg, hdr);
11457
11458         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11459                                 NL80211_MCGRP_MLME, gfp);
11460         return;
11461
11462  free_msg:
11463         nlmsg_free(msg);
11464 }
11465 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11466 #endif
11467
11468 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11469                                 enum nl80211_tdls_operation oper,
11470                                 u16 reason_code, gfp_t gfp)
11471 {
11472         struct wireless_dev *wdev = dev->ieee80211_ptr;
11473         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11474         struct sk_buff *msg;
11475         void *hdr;
11476
11477         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11478                                          reason_code);
11479
11480         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11481         if (!msg)
11482                 return;
11483
11484         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11485         if (!hdr) {
11486                 nlmsg_free(msg);
11487                 return;
11488         }
11489
11490         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11491             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11492             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11493             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11494             (reason_code > 0 &&
11495              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11496                 goto nla_put_failure;
11497
11498         genlmsg_end(msg, hdr);
11499
11500         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11501                                 NL80211_MCGRP_MLME, gfp);
11502         return;
11503
11504  nla_put_failure:
11505         genlmsg_cancel(msg, hdr);
11506         nlmsg_free(msg);
11507 }
11508 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11509
11510 static int nl80211_netlink_notify(struct notifier_block * nb,
11511                                   unsigned long state,
11512                                   void *_notify)
11513 {
11514         struct netlink_notify *notify = _notify;
11515         struct cfg80211_registered_device *rdev;
11516         struct wireless_dev *wdev;
11517         struct cfg80211_beacon_registration *reg, *tmp;
11518
11519         if (state != NETLINK_URELEASE)
11520                 return NOTIFY_DONE;
11521
11522         rcu_read_lock();
11523
11524         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11525                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11526                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11527
11528                 spin_lock_bh(&rdev->beacon_registrations_lock);
11529                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11530                                          list) {
11531                         if (reg->nlportid == notify->portid) {
11532                                 list_del(&reg->list);
11533                                 kfree(reg);
11534                                 break;
11535                         }
11536                 }
11537                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11538         }
11539
11540         rcu_read_unlock();
11541
11542         return NOTIFY_DONE;
11543 }
11544
11545 static struct notifier_block nl80211_netlink_notifier = {
11546         .notifier_call = nl80211_netlink_notify,
11547 };
11548
11549 void cfg80211_ft_event(struct net_device *netdev,
11550                        struct cfg80211_ft_event_params *ft_event)
11551 {
11552         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11553         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11554         struct sk_buff *msg;
11555         void *hdr;
11556
11557         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11558
11559         if (!ft_event->target_ap)
11560                 return;
11561
11562         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11563         if (!msg)
11564                 return;
11565
11566         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11567         if (!hdr)
11568                 goto out;
11569
11570         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11571             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11572             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
11573                 goto out;
11574
11575         if (ft_event->ies &&
11576             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
11577                 goto out;
11578         if (ft_event->ric_ies &&
11579             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11580                     ft_event->ric_ies))
11581                 goto out;
11582
11583         genlmsg_end(msg, hdr);
11584
11585         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11586                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11587         return;
11588  out:
11589         nlmsg_free(msg);
11590 }
11591 EXPORT_SYMBOL(cfg80211_ft_event);
11592
11593 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11594 {
11595         struct cfg80211_registered_device *rdev;
11596         struct sk_buff *msg;
11597         void *hdr;
11598         u32 nlportid;
11599
11600         rdev = wiphy_to_dev(wdev->wiphy);
11601         if (!rdev->crit_proto_nlportid)
11602                 return;
11603
11604         nlportid = rdev->crit_proto_nlportid;
11605         rdev->crit_proto_nlportid = 0;
11606
11607         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11608         if (!msg)
11609                 return;
11610
11611         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11612         if (!hdr)
11613                 goto nla_put_failure;
11614
11615         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11616             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11617                 goto nla_put_failure;
11618
11619         genlmsg_end(msg, hdr);
11620
11621         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11622         return;
11623
11624  nla_put_failure:
11625         if (hdr)
11626                 genlmsg_cancel(msg, hdr);
11627         nlmsg_free(msg);
11628
11629 }
11630 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11631
11632 /* initialisation/exit functions */
11633
11634 int nl80211_init(void)
11635 {
11636         int err;
11637
11638         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
11639                                                    nl80211_mcgrps);
11640         if (err)
11641                 return err;
11642
11643         err = netlink_register_notifier(&nl80211_netlink_notifier);
11644         if (err)
11645                 goto err_out;
11646
11647         return 0;
11648  err_out:
11649         genl_unregister_family(&nl80211_fam);
11650         return err;
11651 }
11652
11653 void nl80211_exit(void)
11654 {
11655         netlink_unregister_notifier(&nl80211_netlink_notifier);
11656         genl_unregister_family(&nl80211_fam);
11657 }