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_TESTMODE /* keep last - ifdef! */
  57 };
  58
  59 static const struct genl_multicast_group nl80211_mcgrps[] = {
  60         [NL80211_MCGRP_CONFIG] = { .name = "config", },
  61         [NL80211_MCGRP_SCAN] = { .name = "scan", },
  62         [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
  63         [NL80211_MCGRP_MLME] = { .name = "mlme", },
  64 #ifdef CONFIG_NL80211_TESTMODE
  65         [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
  66 #endif
  67 };
  68
  69 /* returns ERR_PTR values */
  70 static struct wireless_dev *
  71 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  72 {
  73         struct cfg80211_registered_device *rdev;
  74         struct wireless_dev *result = NULL;
  75         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  76         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  77         u64 wdev_id;
  78         int wiphy_idx = -1;
  79         int ifidx = -1;
  80
  81         ASSERT_RTNL();
  82
  83         if (!have_ifidx && !have_wdev_id)
  84                 return ERR_PTR(-EINVAL);
  85
  86         if (have_ifidx)
  87                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  88         if (have_wdev_id) {
  89                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  90                 wiphy_idx = wdev_id >> 32;
  91         }
  92
  93         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  94                 struct wireless_dev *wdev;
  95
  96                 if (wiphy_net(&rdev->wiphy) != netns)
  97                         continue;
  98
  99                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 100                         continue;
 101
 102                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 103                         if (have_ifidx && wdev->netdev &&
 104                             wdev->netdev->ifindex == ifidx) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 109                                 result = wdev;
 110                                 break;
 111                         }
 112                 }
 113
 114                 if (result)
 115                         break;
 116         }
 117
 118         if (result)
 119                 return result;
 120         return ERR_PTR(-ENODEV);
 121 }
 122
 123 static struct cfg80211_registered_device *
 124 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 125 {
 126         struct cfg80211_registered_device *rdev = NULL, *tmp;
 127         struct net_device *netdev;
 128
 129         ASSERT_RTNL();
 130
 131         if (!attrs[NL80211_ATTR_WIPHY] &&
 132             !attrs[NL80211_ATTR_IFINDEX] &&
 133             !attrs[NL80211_ATTR_WDEV])
 134                 return ERR_PTR(-EINVAL);
 135
 136         if (attrs[NL80211_ATTR_WIPHY])
 137                 rdev = cfg80211_rdev_by_wiphy_idx(
 138                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 139
 140         if (attrs[NL80211_ATTR_WDEV]) {
 141                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 142                 struct wireless_dev *wdev;
 143                 bool found = false;
 144
 145                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 146                 if (tmp) {
 147                         /* make sure wdev exists */
 148                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 149                                 if (wdev->identifier != (u32)wdev_id)
 150                                         continue;
 151                                 found = true;
 152                                 break;
 153                         }
 154
 155                         if (!found)
 156                                 tmp = NULL;
 157
 158                         if (rdev && tmp != rdev)
 159                                 return ERR_PTR(-EINVAL);
 160                         rdev = tmp;
 161                 }
 162         }
 163
 164         if (attrs[NL80211_ATTR_IFINDEX]) {
 165                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 166                 netdev = dev_get_by_index(netns, ifindex);
 167                 if (netdev) {
 168                         if (netdev->ieee80211_ptr)
 169                                 tmp = wiphy_to_dev(
 170                                                 netdev->ieee80211_ptr->wiphy);
 171                         else
 172                                 tmp = NULL;
 173
 174                         dev_put(netdev);
 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 };
 380
 381 /* policy for the key attributes */
 382 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 383         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 384         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 385         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 386         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 387         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 388         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 389         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 390         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 391 };
 392
 393 /* policy for the key default flags */
 394 static const struct nla_policy
 395 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 396         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 397         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 398 };
 399
 400 /* policy for WoWLAN attributes */
 401 static const struct nla_policy
 402 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 403         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 404         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 405         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 406         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 407         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 408         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 409         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 410         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 411         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 412 };
 413
 414 static const struct nla_policy
 415 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 416         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 417         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 418         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 419         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 420         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 421         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 422         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 423                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 424         },
 425         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 426                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 427         },
 428         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 429         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 430         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 431 };
 432
 433 /* policy for coalesce rule attributes */
 434 static const struct nla_policy
 435 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 436         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 437         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 438         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 439 };
 440
 441 /* policy for GTK rekey offload attributes */
 442 static const struct nla_policy
 443 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 444         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 445         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 446         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 447 };
 448
 449 static const struct nla_policy
 450 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 451         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 452                                                  .len = IEEE80211_MAX_SSID_LEN },
 453         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 454 };
 455
 456 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 457                                      struct netlink_callback *cb,
 458                                      struct cfg80211_registered_device **rdev,
 459                                      struct wireless_dev **wdev)
 460 {
 461         int err;
 462
 463         rtnl_lock();
 464
 465         if (!cb->args[0]) {
 466                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 467                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 468                                   nl80211_policy);
 469                 if (err)
 470                         goto out_unlock;
 471
 472                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 473                                                    nl80211_fam.attrbuf);
 474                 if (IS_ERR(*wdev)) {
 475                         err = PTR_ERR(*wdev);
 476                         goto out_unlock;
 477                 }
 478                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 479                 /* 0 is the first index - add 1 to parse only once */
 480                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 481                 cb->args[1] = (*wdev)->identifier;
 482         } else {
 483                 /* subtract the 1 again here */
 484                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 485                 struct wireless_dev *tmp;
 486
 487                 if (!wiphy) {
 488                         err = -ENODEV;
 489                         goto out_unlock;
 490                 }
 491                 *rdev = wiphy_to_dev(wiphy);
 492                 *wdev = NULL;
 493
 494                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 495                         if (tmp->identifier == cb->args[1]) {
 496                                 *wdev = tmp;
 497                                 break;
 498                         }
 499                 }
 500
 501                 if (!*wdev) {
 502                         err = -ENODEV;
 503                         goto out_unlock;
 504                 }
 505         }
 506
 507         return 0;
 508  out_unlock:
 509         rtnl_unlock();
 510         return err;
 511 }
 512
 513 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 514 {
 515         rtnl_unlock();
 516 }
 517
 518 /* IE validation */
 519 static bool is_valid_ie_attr(const struct nlattr *attr)
 520 {
 521         const u8 *pos;
 522         int len;
 523
 524         if (!attr)
 525                 return true;
 526
 527         pos = nla_data(attr);
 528         len = nla_len(attr);
 529
 530         while (len) {
 531                 u8 elemlen;
 532
 533                 if (len < 2)
 534                         return false;
 535                 len -= 2;
 536
 537                 elemlen = pos[1];
 538                 if (elemlen > len)
 539                         return false;
 540
 541                 len -= elemlen;
 542                 pos += 2 + elemlen;
 543         }
 544
 545         return true;
 546 }
 547
 548 /* message building helper */
 549 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 550                                    int flags, u8 cmd)
 551 {
 552         /* since there is no private header just add the generic one */
 553         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 554 }
 555
 556 static int nl80211_msg_put_channel(struct sk_buff *msg,
 557                                    struct ieee80211_channel *chan,
 558                                    bool large)
 559 {
 560         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 561                         chan->center_freq))
 562                 goto nla_put_failure;
 563
 564         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 565             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 566                 goto nla_put_failure;
 567         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 568             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 569                 goto nla_put_failure;
 570         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 571             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 572                 goto nla_put_failure;
 573         if (chan->flags & IEEE80211_CHAN_RADAR) {
 574                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 575                         goto nla_put_failure;
 576                 if (large) {
 577                         u32 time;
 578
 579                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 580
 581                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 582                                         chan->dfs_state))
 583                                 goto nla_put_failure;
 584                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 585                                         time))
 586                                 goto nla_put_failure;
 587                 }
 588         }
 589
 590         if (large) {
 591                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 592                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 593                         goto nla_put_failure;
 594                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 595                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 596                         goto nla_put_failure;
 597                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 598                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 599                         goto nla_put_failure;
 600                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 601                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 602                         goto nla_put_failure;
 603         }
 604
 605         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 606                         DBM_TO_MBM(chan->max_power)))
 607                 goto nla_put_failure;
 608
 609         return 0;
 610
 611  nla_put_failure:
 612         return -ENOBUFS;
 613 }
 614
 615 /* netlink command implementations */
 616
 617 struct key_parse {
 618         struct key_params p;
 619         int idx;
 620         int type;
 621         bool def, defmgmt;
 622         bool def_uni, def_multi;
 623 };
 624
 625 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 626 {
 627         struct nlattr *tb[NL80211_KEY_MAX + 1];
 628         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 629                                    nl80211_key_policy);
 630         if (err)
 631                 return err;
 632
 633         k->def = !!tb[NL80211_KEY_DEFAULT];
 634         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 635
 636         if (k->def) {
 637                 k->def_uni = true;
 638                 k->def_multi = true;
 639         }
 640         if (k->defmgmt)
 641                 k->def_multi = true;
 642
 643         if (tb[NL80211_KEY_IDX])
 644                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 645
 646         if (tb[NL80211_KEY_DATA]) {
 647                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 648                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 649         }
 650
 651         if (tb[NL80211_KEY_SEQ]) {
 652                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 653                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 654         }
 655
 656         if (tb[NL80211_KEY_CIPHER])
 657                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 658
 659         if (tb[NL80211_KEY_TYPE]) {
 660                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 661                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 662                         return -EINVAL;
 663         }
 664
 665         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 666                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 667                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 668                                        tb[NL80211_KEY_DEFAULT_TYPES],
 669                                        nl80211_key_default_policy);
 670                 if (err)
 671                         return err;
 672
 673                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 674                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 675         }
 676
 677         return 0;
 678 }
 679
 680 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 681 {
 682         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 683                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 684                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 685         }
 686
 687         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 688                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 689                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 690         }
 691
 692         if (info->attrs[NL80211_ATTR_KEY_IDX])
 693                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 694
 695         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 696                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 697
 698         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 699         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 700
 701         if (k->def) {
 702                 k->def_uni = true;
 703                 k->def_multi = true;
 704         }
 705         if (k->defmgmt)
 706                 k->def_multi = true;
 707
 708         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 709                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 710                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 711                         return -EINVAL;
 712         }
 713
 714         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 715                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 716                 int err = nla_parse_nested(
 717                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 718                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 719                                 nl80211_key_default_policy);
 720                 if (err)
 721                         return err;
 722
 723                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 724                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 725         }
 726
 727         return 0;
 728 }
 729
 730 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 731 {
 732         int err;
 733
 734         memset(k, 0, sizeof(*k));
 735         k->idx = -1;
 736         k->type = -1;
 737
 738         if (info->attrs[NL80211_ATTR_KEY])
 739                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 740         else
 741                 err = nl80211_parse_key_old(info, k);
 742
 743         if (err)
 744                 return err;
 745
 746         if (k->def && k->defmgmt)
 747                 return -EINVAL;
 748
 749         if (k->defmgmt) {
 750                 if (k->def_uni || !k->def_multi)
 751                         return -EINVAL;
 752         }
 753
 754         if (k->idx != -1) {
 755                 if (k->defmgmt) {
 756                         if (k->idx < 4 || k->idx > 5)
 757                                 return -EINVAL;
 758                 } else if (k->def) {
 759                         if (k->idx < 0 || k->idx > 3)
 760                                 return -EINVAL;
 761                 } else {
 762                         if (k->idx < 0 || k->idx > 5)
 763                                 return -EINVAL;
 764                 }
 765         }
 766
 767         return 0;
 768 }
 769
 770 static struct cfg80211_cached_keys *
 771 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 772                        struct nlattr *keys, bool *no_ht)
 773 {
 774         struct key_parse parse;
 775         struct nlattr *key;
 776         struct cfg80211_cached_keys *result;
 777         int rem, err, def = 0;
 778
 779         result = kzalloc(sizeof(*result), GFP_KERNEL);
 780         if (!result)
 781                 return ERR_PTR(-ENOMEM);
 782
 783         result->def = -1;
 784         result->defmgmt = -1;
 785
 786         nla_for_each_nested(key, keys, rem) {
 787                 memset(&parse, 0, sizeof(parse));
 788                 parse.idx = -1;
 789
 790                 err = nl80211_parse_key_new(key, &parse);
 791                 if (err)
 792                         goto error;
 793                 err = -EINVAL;
 794                 if (!parse.p.key)
 795                         goto error;
 796                 if (parse.idx < 0 || parse.idx > 4)
 797                         goto error;
 798                 if (parse.def) {
 799                         if (def)
 800                                 goto error;
 801                         def = 1;
 802                         result->def = parse.idx;
 803                         if (!parse.def_uni || !parse.def_multi)
 804                                 goto error;
 805                 } else if (parse.defmgmt)
 806                         goto error;
 807                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 808                                                      parse.idx, false, NULL);
 809                 if (err)
 810                         goto error;
 811                 result->params[parse.idx].cipher = parse.p.cipher;
 812                 result->params[parse.idx].key_len = parse.p.key_len;
 813                 result->params[parse.idx].key = result->data[parse.idx];
 814                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 815
 816                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 817                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 818                         if (no_ht)
 819                                 *no_ht = true;
 820                 }
 821         }
 822
 823         return result;
 824  error:
 825         kfree(result);
 826         return ERR_PTR(err);
 827 }
 828
 829 static int nl80211_key_allowed(struct wireless_dev *wdev)
 830 {
 831         ASSERT_WDEV_LOCK(wdev);
 832
 833         switch (wdev->iftype) {
 834         case NL80211_IFTYPE_AP:
 835         case NL80211_IFTYPE_AP_VLAN:
 836         case NL80211_IFTYPE_P2P_GO:
 837         case NL80211_IFTYPE_MESH_POINT:
 838                 break;
 839         case NL80211_IFTYPE_ADHOC:
 840         case NL80211_IFTYPE_STATION:
 841         case NL80211_IFTYPE_P2P_CLIENT:
 842                 if (!wdev->current_bss)
 843                         return -ENOLINK;
 844                 break;
 845         default:
 846                 return -EINVAL;
 847         }
 848
 849         return 0;
 850 }
 851
 852 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 853 {
 854         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 855         int i;
 856
 857         if (!nl_modes)
 858                 goto nla_put_failure;
 859
 860         i = 0;
 861         while (ifmodes) {
 862                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 863                         goto nla_put_failure;
 864                 ifmodes >>= 1;
 865                 i++;
 866         }
 867
 868         nla_nest_end(msg, nl_modes);
 869         return 0;
 870
 871 nla_put_failure:
 872         return -ENOBUFS;
 873 }
 874
 875 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 876                                           struct sk_buff *msg,
 877                                           bool large)
 878 {
 879         struct nlattr *nl_combis;
 880         int i, j;
 881
 882         nl_combis = nla_nest_start(msg,
 883                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 884         if (!nl_combis)
 885                 goto nla_put_failure;
 886
 887         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 888                 const struct ieee80211_iface_combination *c;
 889                 struct nlattr *nl_combi, *nl_limits;
 890
 891                 c = &wiphy->iface_combinations[i];
 892
 893                 nl_combi = nla_nest_start(msg, i + 1);
 894                 if (!nl_combi)
 895                         goto nla_put_failure;
 896
 897                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 898                 if (!nl_limits)
 899                         goto nla_put_failure;
 900
 901                 for (j = 0; j < c->n_limits; j++) {
 902                         struct nlattr *nl_limit;
 903
 904                         nl_limit = nla_nest_start(msg, j + 1);
 905                         if (!nl_limit)
 906                                 goto nla_put_failure;
 907                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 908                                         c->limits[j].max))
 909                                 goto nla_put_failure;
 910                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 911                                                 c->limits[j].types))
 912                                 goto nla_put_failure;
 913                         nla_nest_end(msg, nl_limit);
 914                 }
 915
 916                 nla_nest_end(msg, nl_limits);
 917
 918                 if (c->beacon_int_infra_match &&
 919                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 920                         goto nla_put_failure;
 921                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 922                                 c->num_different_channels) ||
 923                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 924                                 c->max_interfaces))
 925                         goto nla_put_failure;
 926                 if (large &&
 927                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 928                                 c->radar_detect_widths))
 929                         goto nla_put_failure;
 930
 931                 nla_nest_end(msg, nl_combi);
 932         }
 933
 934         nla_nest_end(msg, nl_combis);
 935
 936         return 0;
 937 nla_put_failure:
 938         return -ENOBUFS;
 939 }
 940
 941 #ifdef CONFIG_PM
 942 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 943                                         struct sk_buff *msg)
 944 {
 945         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 946         struct nlattr *nl_tcp;
 947
 948         if (!tcp)
 949                 return 0;
 950
 951         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 952         if (!nl_tcp)
 953                 return -ENOBUFS;
 954
 955         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 956                         tcp->data_payload_max))
 957                 return -ENOBUFS;
 958
 959         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 960                         tcp->data_payload_max))
 961                 return -ENOBUFS;
 962
 963         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 964                 return -ENOBUFS;
 965
 966         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 967                                 sizeof(*tcp->tok), tcp->tok))
 968                 return -ENOBUFS;
 969
 970         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 971                         tcp->data_interval_max))
 972                 return -ENOBUFS;
 973
 974         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 975                         tcp->wake_payload_max))
 976                 return -ENOBUFS;
 977
 978         nla_nest_end(msg, nl_tcp);
 979         return 0;
 980 }
 981
 982 static int nl80211_send_wowlan(struct sk_buff *msg,
 983                                struct cfg80211_registered_device *dev,
 984                                bool large)
 985 {
 986         struct nlattr *nl_wowlan;
 987
 988         if (!dev->wiphy.wowlan)
 989                 return 0;
 990
 991         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 992         if (!nl_wowlan)
 993                 return -ENOBUFS;
 994
 995         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
 996              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 997             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
 998              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 999             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1000              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1001             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1002              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1003             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1004              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1005             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1006              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1007             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1008              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1009             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1010              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1011                 return -ENOBUFS;
1012
1013         if (dev->wiphy.wowlan->n_patterns) {
1014                 struct nl80211_pattern_support pat = {
1015                         .max_patterns = dev->wiphy.wowlan->n_patterns,
1016                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
1017                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
1018                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
1019                 };
1020
1021                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1022                             sizeof(pat), &pat))
1023                         return -ENOBUFS;
1024         }
1025
1026         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1027                 return -ENOBUFS;
1028
1029         nla_nest_end(msg, nl_wowlan);
1030
1031         return 0;
1032 }
1033 #endif
1034
1035 static int nl80211_send_coalesce(struct sk_buff *msg,
1036                                  struct cfg80211_registered_device *dev)
1037 {
1038         struct nl80211_coalesce_rule_support rule;
1039
1040         if (!dev->wiphy.coalesce)
1041                 return 0;
1042
1043         rule.max_rules = dev->wiphy.coalesce->n_rules;
1044         rule.max_delay = dev->wiphy.coalesce->max_delay;
1045         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1046         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1047         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1048         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1049
1050         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1051                 return -ENOBUFS;
1052
1053         return 0;
1054 }
1055
1056 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1057                                       struct ieee80211_supported_band *sband)
1058 {
1059         struct nlattr *nl_rates, *nl_rate;
1060         struct ieee80211_rate *rate;
1061         int i;
1062
1063         /* add HT info */
1064         if (sband->ht_cap.ht_supported &&
1065             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1066                      sizeof(sband->ht_cap.mcs),
1067                      &sband->ht_cap.mcs) ||
1068              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1069                          sband->ht_cap.cap) ||
1070              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1071                         sband->ht_cap.ampdu_factor) ||
1072              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1073                         sband->ht_cap.ampdu_density)))
1074                 return -ENOBUFS;
1075
1076         /* add VHT info */
1077         if (sband->vht_cap.vht_supported &&
1078             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1079                      sizeof(sband->vht_cap.vht_mcs),
1080                      &sband->vht_cap.vht_mcs) ||
1081              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1082                          sband->vht_cap.cap)))
1083                 return -ENOBUFS;
1084
1085         /* add bitrates */
1086         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1087         if (!nl_rates)
1088                 return -ENOBUFS;
1089
1090         for (i = 0; i < sband->n_bitrates; i++) {
1091                 nl_rate = nla_nest_start(msg, i);
1092                 if (!nl_rate)
1093                         return -ENOBUFS;
1094
1095                 rate = &sband->bitrates[i];
1096                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1097                                 rate->bitrate))
1098                         return -ENOBUFS;
1099                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1100                     nla_put_flag(msg,
1101                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1102                         return -ENOBUFS;
1103
1104                 nla_nest_end(msg, nl_rate);
1105         }
1106
1107         nla_nest_end(msg, nl_rates);
1108
1109         return 0;
1110 }
1111
1112 static int
1113 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1114                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1115 {
1116         u16 stypes;
1117         struct nlattr *nl_ftypes, *nl_ifs;
1118         enum nl80211_iftype ift;
1119         int i;
1120
1121         if (!mgmt_stypes)
1122                 return 0;
1123
1124         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1125         if (!nl_ifs)
1126                 return -ENOBUFS;
1127
1128         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1129                 nl_ftypes = nla_nest_start(msg, ift);
1130                 if (!nl_ftypes)
1131                         return -ENOBUFS;
1132                 i = 0;
1133                 stypes = mgmt_stypes[ift].tx;
1134                 while (stypes) {
1135                         if ((stypes & 1) &&
1136                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1137                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1138                                 return -ENOBUFS;
1139                         stypes >>= 1;
1140                         i++;
1141                 }
1142                 nla_nest_end(msg, nl_ftypes);
1143         }
1144
1145         nla_nest_end(msg, nl_ifs);
1146
1147         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1148         if (!nl_ifs)
1149                 return -ENOBUFS;
1150
1151         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1152                 nl_ftypes = nla_nest_start(msg, ift);
1153                 if (!nl_ftypes)
1154                         return -ENOBUFS;
1155                 i = 0;
1156                 stypes = mgmt_stypes[ift].rx;
1157                 while (stypes) {
1158                         if ((stypes & 1) &&
1159                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1160                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1161                                 return -ENOBUFS;
1162                         stypes >>= 1;
1163                         i++;
1164                 }
1165                 nla_nest_end(msg, nl_ftypes);
1166         }
1167         nla_nest_end(msg, nl_ifs);
1168
1169         return 0;
1170 }
1171
1172 struct nl80211_dump_wiphy_state {
1173         s64 filter_wiphy;
1174         long start;
1175         long split_start, band_start, chan_start;
1176         bool split;
1177 };
1178
1179 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1180                               struct sk_buff *msg, u32 portid, u32 seq,
1181                               int flags, struct nl80211_dump_wiphy_state *state)
1182 {
1183         void *hdr;
1184         struct nlattr *nl_bands, *nl_band;
1185         struct nlattr *nl_freqs, *nl_freq;
1186         struct nlattr *nl_cmds;
1187         enum ieee80211_band band;
1188         struct ieee80211_channel *chan;
1189         int i;
1190         const struct ieee80211_txrx_stypes *mgmt_stypes =
1191                                 dev->wiphy.mgmt_stypes;
1192         u32 features;
1193
1194         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1195         if (!hdr)
1196                 return -ENOBUFS;
1197
1198         if (WARN_ON(!state))
1199                 return -EINVAL;
1200
1201         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1202             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1203                            wiphy_name(&dev->wiphy)) ||
1204             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1205                         cfg80211_rdev_list_generation))
1206                 goto nla_put_failure;
1207
1208         switch (state->split_start) {
1209         case 0:
1210                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1211                                dev->wiphy.retry_short) ||
1212                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1213                                dev->wiphy.retry_long) ||
1214                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1215                                 dev->wiphy.frag_threshold) ||
1216                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1217                                 dev->wiphy.rts_threshold) ||
1218                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1219                                dev->wiphy.coverage_class) ||
1220                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1221                                dev->wiphy.max_scan_ssids) ||
1222                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1223                                dev->wiphy.max_sched_scan_ssids) ||
1224                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1225                                 dev->wiphy.max_scan_ie_len) ||
1226                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1227                                 dev->wiphy.max_sched_scan_ie_len) ||
1228                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1229                                dev->wiphy.max_match_sets))
1230                         goto nla_put_failure;
1231
1232                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1233                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1234                         goto nla_put_failure;
1235                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1236                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1237                         goto nla_put_failure;
1238                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1239                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1240                         goto nla_put_failure;
1241                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1242                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1243                         goto nla_put_failure;
1244                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1245                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1246                         goto nla_put_failure;
1247                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1248                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1249                         goto nla_put_failure;
1250                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1251                     nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1252                         goto nla_put_failure;
1253
1254                 state->split_start++;
1255                 if (state->split)
1256                         break;
1257         case 1:
1258                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1259                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1260                             dev->wiphy.cipher_suites))
1261                         goto nla_put_failure;
1262
1263                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1264                                dev->wiphy.max_num_pmkids))
1265                         goto nla_put_failure;
1266
1267                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1268                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1269                         goto nla_put_failure;
1270
1271                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1272                                 dev->wiphy.available_antennas_tx) ||
1273                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1274                                 dev->wiphy.available_antennas_rx))
1275                         goto nla_put_failure;
1276
1277                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1278                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1279                                 dev->wiphy.probe_resp_offload))
1280                         goto nla_put_failure;
1281
1282                 if ((dev->wiphy.available_antennas_tx ||
1283                      dev->wiphy.available_antennas_rx) &&
1284                     dev->ops->get_antenna) {
1285                         u32 tx_ant = 0, rx_ant = 0;
1286                         int res;
1287                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1288                         if (!res) {
1289                                 if (nla_put_u32(msg,
1290                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1291                                                 tx_ant) ||
1292                                     nla_put_u32(msg,
1293                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1294                                                 rx_ant))
1295                                         goto nla_put_failure;
1296                         }
1297                 }
1298
1299                 state->split_start++;
1300                 if (state->split)
1301                         break;
1302         case 2:
1303                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1304                                         dev->wiphy.interface_modes))
1305                                 goto nla_put_failure;
1306                 state->split_start++;
1307                 if (state->split)
1308                         break;
1309         case 3:
1310                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1311                 if (!nl_bands)
1312                         goto nla_put_failure;
1313
1314                 for (band = state->band_start;
1315                      band < IEEE80211_NUM_BANDS; band++) {
1316                         struct ieee80211_supported_band *sband;
1317
1318                         sband = dev->wiphy.bands[band];
1319
1320                         if (!sband)
1321                                 continue;
1322
1323                         nl_band = nla_nest_start(msg, band);
1324                         if (!nl_band)
1325                                 goto nla_put_failure;
1326
1327                         switch (state->chan_start) {
1328                         case 0:
1329                                 if (nl80211_send_band_rateinfo(msg, sband))
1330                                         goto nla_put_failure;
1331                                 state->chan_start++;
1332                                 if (state->split)
1333                                         break;
1334                         default:
1335                                 /* add frequencies */
1336                                 nl_freqs = nla_nest_start(
1337                                         msg, NL80211_BAND_ATTR_FREQS);
1338                                 if (!nl_freqs)
1339                                         goto nla_put_failure;
1340
1341                                 for (i = state->chan_start - 1;
1342                                      i < sband->n_channels;
1343                                      i++) {
1344                                         nl_freq = nla_nest_start(msg, i);
1345                                         if (!nl_freq)
1346                                                 goto nla_put_failure;
1347
1348                                         chan = &sband->channels[i];
1349
1350                                         if (nl80211_msg_put_channel(
1351                                                         msg, chan,
1352                                                         state->split))
1353                                                 goto nla_put_failure;
1354
1355                                         nla_nest_end(msg, nl_freq);
1356                                         if (state->split)
1357                                                 break;
1358                                 }
1359                                 if (i < sband->n_channels)
1360                                         state->chan_start = i + 2;
1361                                 else
1362                                         state->chan_start = 0;
1363                                 nla_nest_end(msg, nl_freqs);
1364                         }
1365
1366                         nla_nest_end(msg, nl_band);
1367
1368                         if (state->split) {
1369                                 /* start again here */
1370                                 if (state->chan_start)
1371                                         band--;
1372                                 break;
1373                         }
1374                 }
1375                 nla_nest_end(msg, nl_bands);
1376
1377                 if (band < IEEE80211_NUM_BANDS)
1378                         state->band_start = band + 1;
1379                 else
1380                         state->band_start = 0;
1381
1382                 /* if bands & channels are done, continue outside */
1383                 if (state->band_start == 0 && state->chan_start == 0)
1384                         state->split_start++;
1385                 if (state->split)
1386                         break;
1387         case 4:
1388                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1389                 if (!nl_cmds)
1390                         goto nla_put_failure;
1391
1392                 i = 0;
1393 #define CMD(op, n)                                                      \
1394                  do {                                                   \
1395                         if (dev->ops->op) {                             \
1396                                 i++;                                    \
1397                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1398                                         goto nla_put_failure;           \
1399                         }                                               \
1400                 } while (0)
1401
1402                 CMD(add_virtual_intf, NEW_INTERFACE);
1403                 CMD(change_virtual_intf, SET_INTERFACE);
1404                 CMD(add_key, NEW_KEY);
1405                 CMD(start_ap, START_AP);
1406                 CMD(add_station, NEW_STATION);
1407                 CMD(add_mpath, NEW_MPATH);
1408                 CMD(update_mesh_config, SET_MESH_CONFIG);
1409                 CMD(change_bss, SET_BSS);
1410                 CMD(auth, AUTHENTICATE);
1411                 CMD(assoc, ASSOCIATE);
1412                 CMD(deauth, DEAUTHENTICATE);
1413                 CMD(disassoc, DISASSOCIATE);
1414                 CMD(join_ibss, JOIN_IBSS);
1415                 CMD(join_mesh, JOIN_MESH);
1416                 CMD(set_pmksa, SET_PMKSA);
1417                 CMD(del_pmksa, DEL_PMKSA);
1418                 CMD(flush_pmksa, FLUSH_PMKSA);
1419                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1420                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1421                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1422                 CMD(mgmt_tx, FRAME);
1423                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1424                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1425                         i++;
1426                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1427                                 goto nla_put_failure;
1428                 }
1429                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1430                     dev->ops->join_mesh) {
1431                         i++;
1432                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1433                                 goto nla_put_failure;
1434                 }
1435                 CMD(set_wds_peer, SET_WDS_PEER);
1436                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1437                         CMD(tdls_mgmt, TDLS_MGMT);
1438                         CMD(tdls_oper, TDLS_OPER);
1439                 }
1440                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1441                         CMD(sched_scan_start, START_SCHED_SCAN);
1442                 CMD(probe_client, PROBE_CLIENT);
1443                 CMD(set_noack_map, SET_NOACK_MAP);
1444                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1445                         i++;
1446                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1447                                 goto nla_put_failure;
1448                 }
1449                 CMD(start_p2p_device, START_P2P_DEVICE);
1450                 CMD(set_mcast_rate, SET_MCAST_RATE);
1451                 if (state->split) {
1452                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1453                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1454                         if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1455                                 CMD(channel_switch, CHANNEL_SWITCH);
1456                 }
1457
1458 #ifdef CONFIG_NL80211_TESTMODE
1459                 CMD(testmode_cmd, TESTMODE);
1460 #endif
1461
1462 #undef CMD
1463
1464                 if (dev->ops->connect || dev->ops->auth) {
1465                         i++;
1466                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1467                                 goto nla_put_failure;
1468                 }
1469
1470                 if (dev->ops->disconnect || dev->ops->deauth) {
1471                         i++;
1472                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1473                                 goto nla_put_failure;
1474                 }
1475
1476                 nla_nest_end(msg, nl_cmds);
1477                 state->split_start++;
1478                 if (state->split)
1479                         break;
1480         case 5:
1481                 if (dev->ops->remain_on_channel &&
1482                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1483                     nla_put_u32(msg,
1484                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1485                                 dev->wiphy.max_remain_on_channel_duration))
1486                         goto nla_put_failure;
1487
1488                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1489                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1490                         goto nla_put_failure;
1491
1492                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1493                         goto nla_put_failure;
1494                 state->split_start++;
1495                 if (state->split)
1496                         break;
1497         case 6:
1498 #ifdef CONFIG_PM
1499                 if (nl80211_send_wowlan(msg, dev, state->split))
1500                         goto nla_put_failure;
1501                 state->split_start++;
1502                 if (state->split)
1503                         break;
1504 #else
1505                 state->split_start++;
1506 #endif
1507         case 7:
1508                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1509                                         dev->wiphy.software_iftypes))
1510                         goto nla_put_failure;
1511
1512                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1513                                                    state->split))
1514                         goto nla_put_failure;
1515
1516                 state->split_start++;
1517                 if (state->split)
1518                         break;
1519         case 8:
1520                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1521                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1522                                 dev->wiphy.ap_sme_capa))
1523                         goto nla_put_failure;
1524
1525                 features = dev->wiphy.features;
1526                 /*
1527                  * We can only add the per-channel limit information if the
1528                  * dump is split, otherwise it makes it too big. Therefore
1529                  * only advertise it in that case.
1530                  */
1531                 if (state->split)
1532                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1533                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1534                         goto nla_put_failure;
1535
1536                 if (dev->wiphy.ht_capa_mod_mask &&
1537                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1538                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1539                             dev->wiphy.ht_capa_mod_mask))
1540                         goto nla_put_failure;
1541
1542                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1543                     dev->wiphy.max_acl_mac_addrs &&
1544                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1545                                 dev->wiphy.max_acl_mac_addrs))
1546                         goto nla_put_failure;
1547
1548                 /*
1549                  * Any information below this point is only available to
1550                  * applications that can deal with it being split. This
1551                  * helps ensure that newly added capabilities don't break
1552                  * older tools by overrunning their buffers.
1553                  *
1554                  * We still increment split_start so that in the split
1555                  * case we'll continue with more data in the next round,
1556                  * but break unconditionally so unsplit data stops here.
1557                  */
1558                 state->split_start++;
1559                 break;
1560         case 9:
1561                 if (dev->wiphy.extended_capabilities &&
1562                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1563                              dev->wiphy.extended_capabilities_len,
1564                              dev->wiphy.extended_capabilities) ||
1565                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1566                              dev->wiphy.extended_capabilities_len,
1567                              dev->wiphy.extended_capabilities_mask)))
1568                         goto nla_put_failure;
1569
1570                 if (dev->wiphy.vht_capa_mod_mask &&
1571                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1572                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1573                             dev->wiphy.vht_capa_mod_mask))
1574                         goto nla_put_failure;
1575
1576                 state->split_start++;
1577                 break;
1578         case 10:
1579                 if (nl80211_send_coalesce(msg, dev))
1580                         goto nla_put_failure;
1581
1582                 /* done */
1583                 state->split_start = 0;
1584                 break;
1585         }
1586         return genlmsg_end(msg, hdr);
1587
1588  nla_put_failure:
1589         genlmsg_cancel(msg, hdr);
1590         return -EMSGSIZE;
1591 }
1592
1593 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1594                                     struct netlink_callback *cb,
1595                                     struct nl80211_dump_wiphy_state *state)
1596 {
1597         struct nlattr **tb = nl80211_fam.attrbuf;
1598         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1599                               tb, nl80211_fam.maxattr, nl80211_policy);
1600         /* ignore parse errors for backward compatibility */
1601         if (ret)
1602                 return 0;
1603
1604         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1605         if (tb[NL80211_ATTR_WIPHY])
1606                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1607         if (tb[NL80211_ATTR_WDEV])
1608                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1609         if (tb[NL80211_ATTR_IFINDEX]) {
1610                 struct net_device *netdev;
1611                 struct cfg80211_registered_device *rdev;
1612                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1613
1614                 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1615                 if (!netdev)
1616                         return -ENODEV;
1617                 if (netdev->ieee80211_ptr) {
1618                         rdev = wiphy_to_dev(
1619                                 netdev->ieee80211_ptr->wiphy);
1620                         state->filter_wiphy = rdev->wiphy_idx;
1621                 }
1622                 dev_put(netdev);
1623         }
1624
1625         return 0;
1626 }
1627
1628 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1629 {
1630         int idx = 0, ret;
1631         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1632         struct cfg80211_registered_device *dev;
1633
1634         rtnl_lock();
1635         if (!state) {
1636                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1637                 if (!state) {
1638                         rtnl_unlock();
1639                         return -ENOMEM;
1640                 }
1641                 state->filter_wiphy = -1;
1642                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1643                 if (ret) {
1644                         kfree(state);
1645                         rtnl_unlock();
1646                         return ret;
1647                 }
1648                 cb->args[0] = (long)state;
1649         }
1650
1651         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1652                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1653                         continue;
1654                 if (++idx <= state->start)
1655                         continue;
1656                 if (state->filter_wiphy != -1 &&
1657                     state->filter_wiphy != dev->wiphy_idx)
1658                         continue;
1659                 /* attempt to fit multiple wiphy data chunks into the skb */
1660                 do {
1661                         ret = nl80211_send_wiphy(dev, skb,
1662                                                  NETLINK_CB(cb->skb).portid,
1663                                                  cb->nlh->nlmsg_seq,
1664                                                  NLM_F_MULTI, state);
1665                         if (ret < 0) {
1666                                 /*
1667                                  * If sending the wiphy data didn't fit (ENOBUFS
1668                                  * or EMSGSIZE returned), this SKB is still
1669                                  * empty (so it's not too big because another
1670                                  * wiphy dataset is already in the skb) and
1671                                  * we've not tried to adjust the dump allocation
1672                                  * yet ... then adjust the alloc size to be
1673                                  * bigger, and return 1 but with the empty skb.
1674                                  * This results in an empty message being RX'ed
1675                                  * in userspace, but that is ignored.
1676                                  *
1677                                  * We can then retry with the larger buffer.
1678                                  */
1679                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1680                                     !skb->len &&
1681                                     cb->min_dump_alloc < 4096) {
1682                                         cb->min_dump_alloc = 4096;
1683                                         rtnl_unlock();
1684                                         return 1;
1685                                 }
1686                                 idx--;
1687                                 break;
1688                         }
1689                 } while (state->split_start > 0);
1690                 break;
1691         }
1692         rtnl_unlock();
1693
1694         state->start = idx;
1695
1696         return skb->len;
1697 }
1698
1699 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1700 {
1701         kfree((void *)cb->args[0]);
1702         return 0;
1703 }
1704
1705 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1706 {
1707         struct sk_buff *msg;
1708         struct cfg80211_registered_device *dev = info->user_ptr[0];
1709         struct nl80211_dump_wiphy_state state = {};
1710
1711         msg = nlmsg_new(4096, GFP_KERNEL);
1712         if (!msg)
1713                 return -ENOMEM;
1714
1715         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1716                                &state) < 0) {
1717                 nlmsg_free(msg);
1718                 return -ENOBUFS;
1719         }
1720
1721         return genlmsg_reply(msg, info);
1722 }
1723
1724 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1725         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1726         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1727         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1728         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1729         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1730 };
1731
1732 static int parse_txq_params(struct nlattr *tb[],
1733                             struct ieee80211_txq_params *txq_params)
1734 {
1735         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1736             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1737             !tb[NL80211_TXQ_ATTR_AIFS])
1738                 return -EINVAL;
1739
1740         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1741         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1742         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1743         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1744         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1745
1746         if (txq_params->ac >= NL80211_NUM_ACS)
1747                 return -EINVAL;
1748
1749         return 0;
1750 }
1751
1752 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1753 {
1754         /*
1755          * You can only set the channel explicitly for WDS interfaces,
1756          * all others have their channel managed via their respective
1757          * "establish a connection" command (connect, join, ...)
1758          *
1759          * For AP/GO and mesh mode, the channel can be set with the
1760          * channel userspace API, but is only stored and passed to the
1761          * low-level driver when the AP starts or the mesh is joined.
1762          * This is for backward compatibility, userspace can also give
1763          * the channel in the start-ap or join-mesh commands instead.
1764          *
1765          * Monitors are special as they are normally slaved to
1766          * whatever else is going on, so they have their own special
1767          * operation to set the monitor channel if possible.
1768          */
1769         return !wdev ||
1770                 wdev->iftype == NL80211_IFTYPE_AP ||
1771                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1772                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1773                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1774 }
1775
1776 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1777                                  struct genl_info *info,
1778                                  struct cfg80211_chan_def *chandef)
1779 {
1780         u32 control_freq;
1781
1782         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1783                 return -EINVAL;
1784
1785         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1786
1787         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1788         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1789         chandef->center_freq1 = control_freq;
1790         chandef->center_freq2 = 0;
1791
1792         /* Primary channel not allowed */
1793         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1794                 return -EINVAL;
1795
1796         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1797                 enum nl80211_channel_type chantype;
1798
1799                 chantype = nla_get_u32(
1800                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1801
1802                 switch (chantype) {
1803                 case NL80211_CHAN_NO_HT:
1804                 case NL80211_CHAN_HT20:
1805                 case NL80211_CHAN_HT40PLUS:
1806                 case NL80211_CHAN_HT40MINUS:
1807                         cfg80211_chandef_create(chandef, chandef->chan,
1808                                                 chantype);
1809                         break;
1810                 default:
1811                         return -EINVAL;
1812                 }
1813         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1814                 chandef->width =
1815                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1816                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1817                         chandef->center_freq1 =
1818                                 nla_get_u32(
1819                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1820                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1821                         chandef->center_freq2 =
1822                                 nla_get_u32(
1823                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1824         }
1825
1826         if (!cfg80211_chandef_valid(chandef))
1827                 return -EINVAL;
1828
1829         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1830                                      IEEE80211_CHAN_DISABLED))
1831                 return -EINVAL;
1832
1833         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1834              chandef->width == NL80211_CHAN_WIDTH_10) &&
1835             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1836                 return -EINVAL;
1837
1838         return 0;
1839 }
1840
1841 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1842                                  struct wireless_dev *wdev,
1843                                  struct genl_info *info)
1844 {
1845         struct cfg80211_chan_def chandef;
1846         int result;
1847         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1848
1849         if (wdev)
1850                 iftype = wdev->iftype;
1851
1852         if (!nl80211_can_set_dev_channel(wdev))
1853                 return -EOPNOTSUPP;
1854
1855         result = nl80211_parse_chandef(rdev, info, &chandef);
1856         if (result)
1857                 return result;
1858
1859         switch (iftype) {
1860         case NL80211_IFTYPE_AP:
1861         case NL80211_IFTYPE_P2P_GO:
1862                 if (wdev->beacon_interval) {
1863                         result = -EBUSY;
1864                         break;
1865                 }
1866                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1867                         result = -EINVAL;
1868                         break;
1869                 }
1870                 wdev->preset_chandef = chandef;
1871                 result = 0;
1872                 break;
1873         case NL80211_IFTYPE_MESH_POINT:
1874                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1875                 break;
1876         case NL80211_IFTYPE_MONITOR:
1877                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1878                 break;
1879         default:
1880                 result = -EINVAL;
1881         }
1882
1883         return result;
1884 }
1885
1886 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1887 {
1888         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1889         struct net_device *netdev = info->user_ptr[1];
1890
1891         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1892 }
1893
1894 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1895 {
1896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1897         struct net_device *dev = info->user_ptr[1];
1898         struct wireless_dev *wdev = dev->ieee80211_ptr;
1899         const u8 *bssid;
1900
1901         if (!info->attrs[NL80211_ATTR_MAC])
1902                 return -EINVAL;
1903
1904         if (netif_running(dev))
1905                 return -EBUSY;
1906
1907         if (!rdev->ops->set_wds_peer)
1908                 return -EOPNOTSUPP;
1909
1910         if (wdev->iftype != NL80211_IFTYPE_WDS)
1911                 return -EOPNOTSUPP;
1912
1913         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1914         return rdev_set_wds_peer(rdev, dev, bssid);
1915 }
1916
1917
1918 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1919 {
1920         struct cfg80211_registered_device *rdev;
1921         struct net_device *netdev = NULL;
1922         struct wireless_dev *wdev;
1923         int result = 0, rem_txq_params = 0;
1924         struct nlattr *nl_txq_params;
1925         u32 changed;
1926         u8 retry_short = 0, retry_long = 0;
1927         u32 frag_threshold = 0, rts_threshold = 0;
1928         u8 coverage_class = 0;
1929
1930         ASSERT_RTNL();
1931
1932         /*
1933          * Try to find the wiphy and netdev. Normally this
1934          * function shouldn't need the netdev, but this is
1935          * done for backward compatibility -- previously
1936          * setting the channel was done per wiphy, but now
1937          * it is per netdev. Previous userland like hostapd
1938          * also passed a netdev to set_wiphy, so that it is
1939          * possible to let that go to the right netdev!
1940          */
1941
1942         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1943                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1944
1945                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1946                 if (netdev && netdev->ieee80211_ptr)
1947                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1948                 else
1949                         netdev = NULL;
1950         }
1951
1952         if (!netdev) {
1953                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1954                                                   info->attrs);
1955                 if (IS_ERR(rdev))
1956                         return PTR_ERR(rdev);
1957                 wdev = NULL;
1958                 netdev = NULL;
1959                 result = 0;
1960         } else
1961                 wdev = netdev->ieee80211_ptr;
1962
1963         /*
1964          * end workaround code, by now the rdev is available
1965          * and locked, and wdev may or may not be NULL.
1966          */
1967
1968         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1969                 result = cfg80211_dev_rename(
1970                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1971
1972         if (result)
1973                 goto bad_res;
1974
1975         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1976                 struct ieee80211_txq_params txq_params;
1977                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1978
1979                 if (!rdev->ops->set_txq_params) {
1980                         result = -EOPNOTSUPP;
1981                         goto bad_res;
1982                 }
1983
1984                 if (!netdev) {
1985                         result = -EINVAL;
1986                         goto bad_res;
1987                 }
1988
1989                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1990                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1991                         result = -EINVAL;
1992                         goto bad_res;
1993                 }
1994
1995                 if (!netif_running(netdev)) {
1996                         result = -ENETDOWN;
1997                         goto bad_res;
1998                 }
1999
2000                 nla_for_each_nested(nl_txq_params,
2001                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2002                                     rem_txq_params) {
2003                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2004                                   nla_data(nl_txq_params),
2005                                   nla_len(nl_txq_params),
2006                                   txq_params_policy);
2007                         result = parse_txq_params(tb, &txq_params);
2008                         if (result)
2009                                 goto bad_res;
2010
2011                         result = rdev_set_txq_params(rdev, netdev,
2012                                                      &txq_params);
2013                         if (result)
2014                                 goto bad_res;
2015                 }
2016         }
2017
2018         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2019                 result = __nl80211_set_channel(rdev,
2020                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
2021                                 info);
2022                 if (result)
2023                         goto bad_res;
2024         }
2025
2026         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2027                 struct wireless_dev *txp_wdev = wdev;
2028                 enum nl80211_tx_power_setting type;
2029                 int idx, mbm = 0;
2030
2031                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2032                         txp_wdev = NULL;
2033
2034                 if (!rdev->ops->set_tx_power) {
2035                         result = -EOPNOTSUPP;
2036                         goto bad_res;
2037                 }
2038
2039                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2040                 type = nla_get_u32(info->attrs[idx]);
2041
2042                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2043                     (type != NL80211_TX_POWER_AUTOMATIC)) {
2044                         result = -EINVAL;
2045                         goto bad_res;
2046                 }
2047
2048                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2049                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2050                         mbm = nla_get_u32(info->attrs[idx]);
2051                 }
2052
2053                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2054                 if (result)
2055                         goto bad_res;
2056         }
2057
2058         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2059             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2060                 u32 tx_ant, rx_ant;
2061                 if ((!rdev->wiphy.available_antennas_tx &&
2062                      !rdev->wiphy.available_antennas_rx) ||
2063                     !rdev->ops->set_antenna) {
2064                         result = -EOPNOTSUPP;
2065                         goto bad_res;
2066                 }
2067
2068                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2069                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2070
2071                 /* reject antenna configurations which don't match the
2072                  * available antenna masks, except for the "all" mask */
2073                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2074                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2075                         result = -EINVAL;
2076                         goto bad_res;
2077                 }
2078
2079                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2080                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2081
2082                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2083                 if (result)
2084                         goto bad_res;
2085         }
2086
2087         changed = 0;
2088
2089         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2090                 retry_short = nla_get_u8(
2091                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2092                 if (retry_short == 0) {
2093                         result = -EINVAL;
2094                         goto bad_res;
2095                 }
2096                 changed |= WIPHY_PARAM_RETRY_SHORT;
2097         }
2098
2099         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2100                 retry_long = nla_get_u8(
2101                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2102                 if (retry_long == 0) {
2103                         result = -EINVAL;
2104                         goto bad_res;
2105                 }
2106                 changed |= WIPHY_PARAM_RETRY_LONG;
2107         }
2108
2109         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2110                 frag_threshold = nla_get_u32(
2111                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2112                 if (frag_threshold < 256) {
2113                         result = -EINVAL;
2114                         goto bad_res;
2115                 }
2116                 if (frag_threshold != (u32) -1) {
2117                         /*
2118                          * Fragments (apart from the last one) are required to
2119                          * have even length. Make the fragmentation code
2120                          * simpler by stripping LSB should someone try to use
2121                          * odd threshold value.
2122                          */
2123                         frag_threshold &= ~0x1;
2124                 }
2125                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2126         }
2127
2128         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2129                 rts_threshold = nla_get_u32(
2130                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2131                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2132         }
2133
2134         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2135                 coverage_class = nla_get_u8(
2136                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2137                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2138         }
2139
2140         if (changed) {
2141                 u8 old_retry_short, old_retry_long;
2142                 u32 old_frag_threshold, old_rts_threshold;
2143                 u8 old_coverage_class;
2144
2145                 if (!rdev->ops->set_wiphy_params) {
2146                         result = -EOPNOTSUPP;
2147                         goto bad_res;
2148                 }
2149
2150                 old_retry_short = rdev->wiphy.retry_short;
2151                 old_retry_long = rdev->wiphy.retry_long;
2152                 old_frag_threshold = rdev->wiphy.frag_threshold;
2153                 old_rts_threshold = rdev->wiphy.rts_threshold;
2154                 old_coverage_class = rdev->wiphy.coverage_class;
2155
2156                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2157                         rdev->wiphy.retry_short = retry_short;
2158                 if (changed & WIPHY_PARAM_RETRY_LONG)
2159                         rdev->wiphy.retry_long = retry_long;
2160                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2161                         rdev->wiphy.frag_threshold = frag_threshold;
2162                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2163                         rdev->wiphy.rts_threshold = rts_threshold;
2164                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2165                         rdev->wiphy.coverage_class = coverage_class;
2166
2167                 result = rdev_set_wiphy_params(rdev, changed);
2168                 if (result) {
2169                         rdev->wiphy.retry_short = old_retry_short;
2170                         rdev->wiphy.retry_long = old_retry_long;
2171                         rdev->wiphy.frag_threshold = old_frag_threshold;
2172                         rdev->wiphy.rts_threshold = old_rts_threshold;
2173                         rdev->wiphy.coverage_class = old_coverage_class;
2174                 }
2175         }
2176
2177  bad_res:
2178         if (netdev)
2179                 dev_put(netdev);
2180         return result;
2181 }
2182
2183 static inline u64 wdev_id(struct wireless_dev *wdev)
2184 {
2185         return (u64)wdev->identifier |
2186                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2187 }
2188
2189 static int nl80211_send_chandef(struct sk_buff *msg,
2190                                  struct cfg80211_chan_def *chandef)
2191 {
2192         WARN_ON(!cfg80211_chandef_valid(chandef));
2193
2194         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2195                         chandef->chan->center_freq))
2196                 return -ENOBUFS;
2197         switch (chandef->width) {
2198         case NL80211_CHAN_WIDTH_20_NOHT:
2199         case NL80211_CHAN_WIDTH_20:
2200         case NL80211_CHAN_WIDTH_40:
2201                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2202                                 cfg80211_get_chandef_type(chandef)))
2203                         return -ENOBUFS;
2204                 break;
2205         default:
2206                 break;
2207         }
2208         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2209                 return -ENOBUFS;
2210         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2211                 return -ENOBUFS;
2212         if (chandef->center_freq2 &&
2213             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2214                 return -ENOBUFS;
2215         return 0;
2216 }
2217
2218 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2219                               struct cfg80211_registered_device *rdev,
2220                               struct wireless_dev *wdev)
2221 {
2222         struct net_device *dev = wdev->netdev;
2223         void *hdr;
2224
2225         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2226         if (!hdr)
2227                 return -1;
2228
2229         if (dev &&
2230             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2231              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2232                 goto nla_put_failure;
2233
2234         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2235             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2236             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2237             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2238             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2239                         rdev->devlist_generation ^
2240                         (cfg80211_rdev_list_generation << 2)))
2241                 goto nla_put_failure;
2242
2243         if (rdev->ops->get_channel) {
2244                 int ret;
2245                 struct cfg80211_chan_def chandef;
2246
2247                 ret = rdev_get_channel(rdev, wdev, &chandef);
2248                 if (ret == 0) {
2249                         if (nl80211_send_chandef(msg, &chandef))
2250                                 goto nla_put_failure;
2251                 }
2252         }
2253
2254         if (wdev->ssid_len) {
2255                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2256                         goto nla_put_failure;
2257         }
2258
2259         return genlmsg_end(msg, hdr);
2260
2261  nla_put_failure:
2262         genlmsg_cancel(msg, hdr);
2263         return -EMSGSIZE;
2264 }
2265
2266 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2267 {
2268         int wp_idx = 0;
2269         int if_idx = 0;
2270         int wp_start = cb->args[0];
2271         int if_start = cb->args[1];
2272         struct cfg80211_registered_device *rdev;
2273         struct wireless_dev *wdev;
2274
2275         rtnl_lock();
2276         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2277                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2278                         continue;
2279                 if (wp_idx < wp_start) {
2280                         wp_idx++;
2281                         continue;
2282                 }
2283                 if_idx = 0;
2284
2285                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2286                         if (if_idx < if_start) {
2287                                 if_idx++;
2288                                 continue;
2289                         }
2290                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2291                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2292                                                rdev, wdev) < 0) {
2293                                 goto out;
2294                         }
2295                         if_idx++;
2296                 }
2297
2298                 wp_idx++;
2299         }
2300  out:
2301         rtnl_unlock();
2302
2303         cb->args[0] = wp_idx;
2304         cb->args[1] = if_idx;
2305
2306         return skb->len;
2307 }
2308
2309 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2310 {
2311         struct sk_buff *msg;
2312         struct cfg80211_registered_device *dev = info->user_ptr[0];
2313         struct wireless_dev *wdev = info->user_ptr[1];
2314
2315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2316         if (!msg)
2317                 return -ENOMEM;
2318
2319         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2320                                dev, wdev) < 0) {
2321                 nlmsg_free(msg);
2322                 return -ENOBUFS;
2323         }
2324
2325         return genlmsg_reply(msg, info);
2326 }
2327
2328 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2329         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2330         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2331         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2332         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2333         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2334         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2335 };
2336
2337 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2338 {
2339         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2340         int flag;
2341
2342         *mntrflags = 0;
2343
2344         if (!nla)
2345                 return -EINVAL;
2346
2347         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2348                              nla, mntr_flags_policy))
2349                 return -EINVAL;
2350
2351         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2352                 if (flags[flag])
2353                         *mntrflags |= (1<<flag);
2354
2355         return 0;
2356 }
2357
2358 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2359                                struct net_device *netdev, u8 use_4addr,
2360                                enum nl80211_iftype iftype)
2361 {
2362         if (!use_4addr) {
2363                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2364                         return -EBUSY;
2365                 return 0;
2366         }
2367
2368         switch (iftype) {
2369         case NL80211_IFTYPE_AP_VLAN:
2370                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2371                         return 0;
2372                 break;
2373         case NL80211_IFTYPE_STATION:
2374                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2375                         return 0;
2376                 break;
2377         default:
2378                 break;
2379         }
2380
2381         return -EOPNOTSUPP;
2382 }
2383
2384 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2385 {
2386         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2387         struct vif_params params;
2388         int err;
2389         enum nl80211_iftype otype, ntype;
2390         struct net_device *dev = info->user_ptr[1];
2391         u32 _flags, *flags = NULL;
2392         bool change = false;
2393
2394         memset(&params, 0, sizeof(params));
2395
2396         otype = ntype = dev->ieee80211_ptr->iftype;
2397
2398         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2399                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2400                 if (otype != ntype)
2401                         change = true;
2402                 if (ntype > NL80211_IFTYPE_MAX)
2403                         return -EINVAL;
2404         }
2405
2406         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2407                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2408
2409                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2410                         return -EINVAL;
2411                 if (netif_running(dev))
2412                         return -EBUSY;
2413
2414                 wdev_lock(wdev);
2415                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2416                              IEEE80211_MAX_MESH_ID_LEN);
2417                 wdev->mesh_id_up_len =
2418                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2419                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2420                        wdev->mesh_id_up_len);
2421                 wdev_unlock(wdev);
2422         }
2423
2424         if (info->attrs[NL80211_ATTR_4ADDR]) {
2425                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2426                 change = true;
2427                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2428                 if (err)
2429                         return err;
2430         } else {
2431                 params.use_4addr = -1;
2432         }
2433
2434         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2435                 if (ntype != NL80211_IFTYPE_MONITOR)
2436                         return -EINVAL;
2437                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2438                                           &_flags);
2439                 if (err)
2440                         return err;
2441
2442                 flags = &_flags;
2443                 change = true;
2444         }
2445
2446         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2447             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2448                 return -EOPNOTSUPP;
2449
2450         if (change)
2451                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2452         else
2453                 err = 0;
2454
2455         if (!err && params.use_4addr != -1)
2456                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2457
2458         return err;
2459 }
2460
2461 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2462 {
2463         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2464         struct vif_params params;
2465         struct wireless_dev *wdev;
2466         struct sk_buff *msg;
2467         int err;
2468         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2469         u32 flags;
2470
2471         memset(&params, 0, sizeof(params));
2472
2473         if (!info->attrs[NL80211_ATTR_IFNAME])
2474                 return -EINVAL;
2475
2476         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2477                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2478                 if (type > NL80211_IFTYPE_MAX)
2479                         return -EINVAL;
2480         }
2481
2482         if (!rdev->ops->add_virtual_intf ||
2483             !(rdev->wiphy.interface_modes & (1 << type)))
2484                 return -EOPNOTSUPP;
2485
2486         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2487                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2488                            ETH_ALEN);
2489                 if (!is_valid_ether_addr(params.macaddr))
2490                         return -EADDRNOTAVAIL;
2491         }
2492
2493         if (info->attrs[NL80211_ATTR_4ADDR]) {
2494                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2495                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2496                 if (err)
2497                         return err;
2498         }
2499
2500         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2501         if (!msg)
2502                 return -ENOMEM;
2503
2504         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2505                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2506                                   &flags);
2507
2508         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2509             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2510                 return -EOPNOTSUPP;
2511
2512         wdev = rdev_add_virtual_intf(rdev,
2513                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2514                                 type, err ? NULL : &flags, &params);
2515         if (IS_ERR(wdev)) {
2516                 nlmsg_free(msg);
2517                 return PTR_ERR(wdev);
2518         }
2519
2520         switch (type) {
2521         case NL80211_IFTYPE_MESH_POINT:
2522                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2523                         break;
2524                 wdev_lock(wdev);
2525                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2526                              IEEE80211_MAX_MESH_ID_LEN);
2527                 wdev->mesh_id_up_len =
2528                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2529                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2530                        wdev->mesh_id_up_len);
2531                 wdev_unlock(wdev);
2532                 break;
2533         case NL80211_IFTYPE_P2P_DEVICE:
2534                 /*
2535                  * P2P Device doesn't have a netdev, so doesn't go
2536                  * through the netdev notifier and must be added here
2537                  */
2538                 mutex_init(&wdev->mtx);
2539                 INIT_LIST_HEAD(&wdev->event_list);
2540                 spin_lock_init(&wdev->event_lock);
2541                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2542                 spin_lock_init(&wdev->mgmt_registrations_lock);
2543
2544                 wdev->identifier = ++rdev->wdev_id;
2545                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2546                 rdev->devlist_generation++;
2547                 break;
2548         default:
2549                 break;
2550         }
2551
2552         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2553                                rdev, wdev) < 0) {
2554                 nlmsg_free(msg);
2555                 return -ENOBUFS;
2556         }
2557
2558         return genlmsg_reply(msg, info);
2559 }
2560
2561 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2562 {
2563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2564         struct wireless_dev *wdev = info->user_ptr[1];
2565
2566         if (!rdev->ops->del_virtual_intf)
2567                 return -EOPNOTSUPP;
2568
2569         /*
2570          * If we remove a wireless device without a netdev then clear
2571          * user_ptr[1] so that nl80211_post_doit won't dereference it
2572          * to check if it needs to do dev_put(). Otherwise it crashes
2573          * since the wdev has been freed, unlike with a netdev where
2574          * we need the dev_put() for the netdev to really be freed.
2575          */
2576         if (!wdev->netdev)
2577                 info->user_ptr[1] = NULL;
2578
2579         return rdev_del_virtual_intf(rdev, wdev);
2580 }
2581
2582 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2583 {
2584         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2585         struct net_device *dev = info->user_ptr[1];
2586         u16 noack_map;
2587
2588         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2589                 return -EINVAL;
2590
2591         if (!rdev->ops->set_noack_map)
2592                 return -EOPNOTSUPP;
2593
2594         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2595
2596         return rdev_set_noack_map(rdev, dev, noack_map);
2597 }
2598
2599 struct get_key_cookie {
2600         struct sk_buff *msg;
2601         int error;
2602         int idx;
2603 };
2604
2605 static void get_key_callback(void *c, struct key_params *params)
2606 {
2607         struct nlattr *key;
2608         struct get_key_cookie *cookie = c;
2609
2610         if ((params->key &&
2611              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2612                      params->key_len, params->key)) ||
2613             (params->seq &&
2614              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2615                      params->seq_len, params->seq)) ||
2616             (params->cipher &&
2617              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2618                          params->cipher)))
2619                 goto nla_put_failure;
2620
2621         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2622         if (!key)
2623                 goto nla_put_failure;
2624
2625         if ((params->key &&
2626              nla_put(cookie->msg, NL80211_KEY_DATA,
2627                      params->key_len, params->key)) ||
2628             (params->seq &&
2629              nla_put(cookie->msg, NL80211_KEY_SEQ,
2630                      params->seq_len, params->seq)) ||
2631             (params->cipher &&
2632              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2633                          params->cipher)))
2634                 goto nla_put_failure;
2635
2636         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2637                 goto nla_put_failure;
2638
2639         nla_nest_end(cookie->msg, key);
2640
2641         return;
2642  nla_put_failure:
2643         cookie->error = 1;
2644 }
2645
2646 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2647 {
2648         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2649         int err;
2650         struct net_device *dev = info->user_ptr[1];
2651         u8 key_idx = 0;
2652         const u8 *mac_addr = NULL;
2653         bool pairwise;
2654         struct get_key_cookie cookie = {
2655                 .error = 0,
2656         };
2657         void *hdr;
2658         struct sk_buff *msg;
2659
2660         if (info->attrs[NL80211_ATTR_KEY_IDX])
2661                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2662
2663         if (key_idx > 5)
2664                 return -EINVAL;
2665
2666         if (info->attrs[NL80211_ATTR_MAC])
2667                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2668
2669         pairwise = !!mac_addr;
2670         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2671                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2672                 if (kt >= NUM_NL80211_KEYTYPES)
2673                         return -EINVAL;
2674                 if (kt != NL80211_KEYTYPE_GROUP &&
2675                     kt != NL80211_KEYTYPE_PAIRWISE)
2676                         return -EINVAL;
2677                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2678         }
2679
2680         if (!rdev->ops->get_key)
2681                 return -EOPNOTSUPP;
2682
2683         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2684         if (!msg)
2685                 return -ENOMEM;
2686
2687         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2688                              NL80211_CMD_NEW_KEY);
2689         if (!hdr)
2690                 return -ENOBUFS;
2691
2692         cookie.msg = msg;
2693         cookie.idx = key_idx;
2694
2695         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2696             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2697                 goto nla_put_failure;
2698         if (mac_addr &&
2699             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2700                 goto nla_put_failure;
2701
2702         if (pairwise && mac_addr &&
2703             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2704                 return -ENOENT;
2705
2706         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2707                            get_key_callback);
2708
2709         if (err)
2710                 goto free_msg;
2711
2712         if (cookie.error)
2713                 goto nla_put_failure;
2714
2715         genlmsg_end(msg, hdr);
2716         return genlmsg_reply(msg, info);
2717
2718  nla_put_failure:
2719         err = -ENOBUFS;
2720  free_msg:
2721         nlmsg_free(msg);
2722         return err;
2723 }
2724
2725 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2726 {
2727         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2728         struct key_parse key;
2729         int err;
2730         struct net_device *dev = info->user_ptr[1];
2731
2732         err = nl80211_parse_key(info, &key);
2733         if (err)
2734                 return err;
2735
2736         if (key.idx < 0)
2737                 return -EINVAL;
2738
2739         /* only support setting default key */
2740         if (!key.def && !key.defmgmt)
2741                 return -EINVAL;
2742
2743         wdev_lock(dev->ieee80211_ptr);
2744
2745         if (key.def) {
2746                 if (!rdev->ops->set_default_key) {
2747                         err = -EOPNOTSUPP;
2748                         goto out;
2749                 }
2750
2751                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2752                 if (err)
2753                         goto out;
2754
2755                 err = rdev_set_default_key(rdev, dev, key.idx,
2756                                                  key.def_uni, key.def_multi);
2757
2758                 if (err)
2759                         goto out;
2760
2761 #ifdef CONFIG_CFG80211_WEXT
2762                 dev->ieee80211_ptr->wext.default_key = key.idx;
2763 #endif
2764         } else {
2765                 if (key.def_uni || !key.def_multi) {
2766                         err = -EINVAL;
2767                         goto out;
2768                 }
2769
2770                 if (!rdev->ops->set_default_mgmt_key) {
2771                         err = -EOPNOTSUPP;
2772                         goto out;
2773                 }
2774
2775                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2776                 if (err)
2777                         goto out;
2778
2779                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2780                 if (err)
2781                         goto out;
2782
2783 #ifdef CONFIG_CFG80211_WEXT
2784                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2785 #endif
2786         }
2787
2788  out:
2789         wdev_unlock(dev->ieee80211_ptr);
2790
2791         return err;
2792 }
2793
2794 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2795 {
2796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2797         int err;
2798         struct net_device *dev = info->user_ptr[1];
2799         struct key_parse key;
2800         const u8 *mac_addr = NULL;
2801
2802         err = nl80211_parse_key(info, &key);
2803         if (err)
2804                 return err;
2805
2806         if (!key.p.key)
2807                 return -EINVAL;
2808
2809         if (info->attrs[NL80211_ATTR_MAC])
2810                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2811
2812         if (key.type == -1) {
2813                 if (mac_addr)
2814                         key.type = NL80211_KEYTYPE_PAIRWISE;
2815                 else
2816                         key.type = NL80211_KEYTYPE_GROUP;
2817         }
2818
2819         /* for now */
2820         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2821             key.type != NL80211_KEYTYPE_GROUP)
2822                 return -EINVAL;
2823
2824         if (!rdev->ops->add_key)
2825                 return -EOPNOTSUPP;
2826
2827         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2828                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2829                                            mac_addr))
2830                 return -EINVAL;
2831
2832         wdev_lock(dev->ieee80211_ptr);
2833         err = nl80211_key_allowed(dev->ieee80211_ptr);
2834         if (!err)
2835                 err = rdev_add_key(rdev, dev, key.idx,
2836                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2837                                     mac_addr, &key.p);
2838         wdev_unlock(dev->ieee80211_ptr);
2839
2840         return err;
2841 }
2842
2843 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2844 {
2845         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2846         int err;
2847         struct net_device *dev = info->user_ptr[1];
2848         u8 *mac_addr = NULL;
2849         struct key_parse key;
2850
2851         err = nl80211_parse_key(info, &key);
2852         if (err)
2853                 return err;
2854
2855         if (info->attrs[NL80211_ATTR_MAC])
2856                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2857
2858         if (key.type == -1) {
2859                 if (mac_addr)
2860                         key.type = NL80211_KEYTYPE_PAIRWISE;
2861                 else
2862                         key.type = NL80211_KEYTYPE_GROUP;
2863         }
2864
2865         /* for now */
2866         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2867             key.type != NL80211_KEYTYPE_GROUP)
2868                 return -EINVAL;
2869
2870         if (!rdev->ops->del_key)
2871                 return -EOPNOTSUPP;
2872
2873         wdev_lock(dev->ieee80211_ptr);
2874         err = nl80211_key_allowed(dev->ieee80211_ptr);
2875
2876         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2877             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2878                 err = -ENOENT;
2879
2880         if (!err)
2881                 err = rdev_del_key(rdev, dev, key.idx,
2882                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2883                                    mac_addr);
2884
2885 #ifdef CONFIG_CFG80211_WEXT
2886         if (!err) {
2887                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2888                         dev->ieee80211_ptr->wext.default_key = -1;
2889                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2890                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2891         }
2892 #endif
2893         wdev_unlock(dev->ieee80211_ptr);
2894
2895         return err;
2896 }
2897
2898 /* This function returns an error or the number of nested attributes */
2899 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2900 {
2901         struct nlattr *attr;
2902         int n_entries = 0, tmp;
2903
2904         nla_for_each_nested(attr, nl_attr, tmp) {
2905                 if (nla_len(attr) != ETH_ALEN)
2906                         return -EINVAL;
2907
2908                 n_entries++;
2909         }
2910
2911         return n_entries;
2912 }
2913
2914 /*
2915  * This function parses ACL information and allocates memory for ACL data.
2916  * On successful return, the calling function is responsible to free the
2917  * ACL buffer returned by this function.
2918  */
2919 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2920                                                 struct genl_info *info)
2921 {
2922         enum nl80211_acl_policy acl_policy;
2923         struct nlattr *attr;
2924         struct cfg80211_acl_data *acl;
2925         int i = 0, n_entries, tmp;
2926
2927         if (!wiphy->max_acl_mac_addrs)
2928                 return ERR_PTR(-EOPNOTSUPP);
2929
2930         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2931                 return ERR_PTR(-EINVAL);
2932
2933         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2934         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2935             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2936                 return ERR_PTR(-EINVAL);
2937
2938         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2939                 return ERR_PTR(-EINVAL);
2940
2941         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2942         if (n_entries < 0)
2943                 return ERR_PTR(n_entries);
2944
2945         if (n_entries > wiphy->max_acl_mac_addrs)
2946                 return ERR_PTR(-ENOTSUPP);
2947
2948         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2949                       GFP_KERNEL);
2950         if (!acl)
2951                 return ERR_PTR(-ENOMEM);
2952
2953         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2954                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2955                 i++;
2956         }
2957
2958         acl->n_acl_entries = n_entries;
2959         acl->acl_policy = acl_policy;
2960
2961         return acl;
2962 }
2963
2964 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2965 {
2966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2967         struct net_device *dev = info->user_ptr[1];
2968         struct cfg80211_acl_data *acl;
2969         int err;
2970
2971         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2972             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2973                 return -EOPNOTSUPP;
2974
2975         if (!dev->ieee80211_ptr->beacon_interval)
2976                 return -EINVAL;
2977
2978         acl = parse_acl_data(&rdev->wiphy, info);
2979         if (IS_ERR(acl))
2980                 return PTR_ERR(acl);
2981
2982         err = rdev_set_mac_acl(rdev, dev, acl);
2983
2984         kfree(acl);
2985
2986         return err;
2987 }
2988
2989 static int nl80211_parse_beacon(struct nlattr *attrs[],
2990                                 struct cfg80211_beacon_data *bcn)
2991 {
2992         bool haveinfo = false;
2993
2994         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2995             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2996             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2997             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2998                 return -EINVAL;
2999
3000         memset(bcn, 0, sizeof(*bcn));
3001
3002         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3003                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3004                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3005                 if (!bcn->head_len)
3006                         return -EINVAL;
3007                 haveinfo = true;
3008         }
3009
3010         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3011                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3012                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3013                 haveinfo = true;
3014         }
3015
3016         if (!haveinfo)
3017                 return -EINVAL;
3018
3019         if (attrs[NL80211_ATTR_IE]) {
3020                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3021                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3022         }
3023
3024         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3025                 bcn->proberesp_ies =
3026                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3027                 bcn->proberesp_ies_len =
3028                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3029         }
3030
3031         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3032                 bcn->assocresp_ies =
3033                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3034                 bcn->assocresp_ies_len =
3035                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3036         }
3037
3038         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3039                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3040                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3041         }
3042
3043         return 0;
3044 }
3045
3046 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3047                                    struct cfg80211_ap_settings *params)
3048 {
3049         struct wireless_dev *wdev;
3050         bool ret = false;
3051
3052         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3053                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3054                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3055                         continue;
3056
3057                 if (!wdev->preset_chandef.chan)
3058                         continue;
3059
3060                 params->chandef = wdev->preset_chandef;
3061                 ret = true;
3062                 break;
3063         }
3064
3065         return ret;
3066 }
3067
3068 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3069                                     enum nl80211_auth_type auth_type,
3070                                     enum nl80211_commands cmd)
3071 {
3072         if (auth_type > NL80211_AUTHTYPE_MAX)
3073                 return false;
3074
3075         switch (cmd) {
3076         case NL80211_CMD_AUTHENTICATE:
3077                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3078                     auth_type == NL80211_AUTHTYPE_SAE)
3079                         return false;
3080                 return true;
3081         case NL80211_CMD_CONNECT:
3082         case NL80211_CMD_START_AP:
3083                 /* SAE not supported yet */
3084                 if (auth_type == NL80211_AUTHTYPE_SAE)
3085                         return false;
3086                 return true;
3087         default:
3088                 return false;
3089         }
3090 }
3091
3092 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3093 {
3094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3095         struct net_device *dev = info->user_ptr[1];
3096         struct wireless_dev *wdev = dev->ieee80211_ptr;
3097         struct cfg80211_ap_settings params;
3098         int err;
3099         u8 radar_detect_width = 0;
3100
3101         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3102             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3103                 return -EOPNOTSUPP;
3104
3105         if (!rdev->ops->start_ap)
3106                 return -EOPNOTSUPP;
3107
3108         if (wdev->beacon_interval)
3109                 return -EALREADY;
3110
3111         memset(&params, 0, sizeof(params));
3112
3113         /* these are required for START_AP */
3114         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3115             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3116             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3117                 return -EINVAL;
3118
3119         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3120         if (err)
3121                 return err;
3122
3123         params.beacon_interval =
3124                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3125         params.dtim_period =
3126                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3127
3128         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3129         if (err)
3130                 return err;
3131
3132         /*
3133          * In theory, some of these attributes should be required here
3134          * but since they were not used when the command was originally
3135          * added, keep them optional for old user space programs to let
3136          * them continue to work with drivers that do not need the
3137          * additional information -- drivers must check!
3138          */
3139         if (info->attrs[NL80211_ATTR_SSID]) {
3140                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3141                 params.ssid_len =
3142                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3143                 if (params.ssid_len == 0 ||
3144                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3145                         return -EINVAL;
3146         }
3147
3148         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3149                 params.hidden_ssid = nla_get_u32(
3150                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3151                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3152                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3153                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3154                         return -EINVAL;
3155         }
3156
3157         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3158
3159         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3160                 params.auth_type = nla_get_u32(
3161                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3162                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3163                                              NL80211_CMD_START_AP))
3164                         return -EINVAL;
3165         } else
3166                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3167
3168         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3169                                       NL80211_MAX_NR_CIPHER_SUITES);
3170         if (err)
3171                 return err;
3172
3173         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3174                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3175                         return -EOPNOTSUPP;
3176                 params.inactivity_timeout = nla_get_u16(
3177                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3178         }
3179
3180         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3181                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3182                         return -EINVAL;
3183                 params.p2p_ctwindow =
3184                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3185                 if (params.p2p_ctwindow > 127)
3186                         return -EINVAL;
3187                 if (params.p2p_ctwindow != 0 &&
3188                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3189                         return -EINVAL;
3190         }
3191
3192         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3193                 u8 tmp;
3194
3195                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3196                         return -EINVAL;
3197                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3198                 if (tmp > 1)
3199                         return -EINVAL;
3200                 params.p2p_opp_ps = tmp;
3201                 if (params.p2p_opp_ps != 0 &&
3202                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3203                         return -EINVAL;
3204         }
3205
3206         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3207                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3208                 if (err)
3209                         return err;
3210         } else if (wdev->preset_chandef.chan) {
3211                 params.chandef = wdev->preset_chandef;
3212         } else if (!nl80211_get_ap_channel(rdev, &params))
3213                 return -EINVAL;
3214
3215         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3216                 return -EINVAL;
3217
3218         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3219         if (err < 0)
3220                 return err;
3221         if (err) {
3222                 radar_detect_width = BIT(params.chandef.width);
3223                 params.radar_required = true;
3224         }
3225
3226         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3227                                            params.chandef.chan,
3228                                            CHAN_MODE_SHARED,
3229                                            radar_detect_width);
3230         if (err)
3231                 return err;
3232
3233         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3234                 params.acl = parse_acl_data(&rdev->wiphy, info);
3235                 if (IS_ERR(params.acl))
3236                         return PTR_ERR(params.acl);
3237         }
3238
3239         err = rdev_start_ap(rdev, dev, &params);
3240         if (!err) {
3241                 wdev->preset_chandef = params.chandef;
3242                 wdev->beacon_interval = params.beacon_interval;
3243                 wdev->channel = params.chandef.chan;
3244                 wdev->ssid_len = params.ssid_len;
3245                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3246         }
3247
3248         kfree(params.acl);
3249
3250         return err;
3251 }
3252
3253 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3254 {
3255         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3256         struct net_device *dev = info->user_ptr[1];
3257         struct wireless_dev *wdev = dev->ieee80211_ptr;
3258         struct cfg80211_beacon_data params;
3259         int err;
3260
3261         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3262             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3263                 return -EOPNOTSUPP;
3264
3265         if (!rdev->ops->change_beacon)
3266                 return -EOPNOTSUPP;
3267
3268         if (!wdev->beacon_interval)
3269                 return -EINVAL;
3270
3271         err = nl80211_parse_beacon(info->attrs, &params);
3272         if (err)
3273                 return err;
3274
3275         return rdev_change_beacon(rdev, dev, &params);
3276 }
3277
3278 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3279 {
3280         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3281         struct net_device *dev = info->user_ptr[1];
3282
3283         return cfg80211_stop_ap(rdev, dev);
3284 }
3285
3286 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3287         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3288         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3289         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3290         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3291         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3292         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3293 };
3294
3295 static int parse_station_flags(struct genl_info *info,
3296                                enum nl80211_iftype iftype,
3297                                struct station_parameters *params)
3298 {
3299         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3300         struct nlattr *nla;
3301         int flag;
3302
3303         /*
3304          * Try parsing the new attribute first so userspace
3305          * can specify both for older kernels.
3306          */
3307         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3308         if (nla) {
3309                 struct nl80211_sta_flag_update *sta_flags;
3310
3311                 sta_flags = nla_data(nla);
3312                 params->sta_flags_mask = sta_flags->mask;
3313                 params->sta_flags_set = sta_flags->set;
3314                 params->sta_flags_set &= params->sta_flags_mask;
3315                 if ((params->sta_flags_mask |
3316                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3317                         return -EINVAL;
3318                 return 0;
3319         }
3320
3321         /* if present, parse the old attribute */
3322
3323         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3324         if (!nla)
3325                 return 0;
3326
3327         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3328                              nla, sta_flags_policy))
3329                 return -EINVAL;
3330
3331         /*
3332          * Only allow certain flags for interface types so that
3333          * other attributes are silently ignored. Remember that
3334          * this is backward compatibility code with old userspace
3335          * and shouldn't be hit in other cases anyway.
3336          */
3337         switch (iftype) {
3338         case NL80211_IFTYPE_AP:
3339         case NL80211_IFTYPE_AP_VLAN:
3340         case NL80211_IFTYPE_P2P_GO:
3341                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3342                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3343                                          BIT(NL80211_STA_FLAG_WME) |
3344                                          BIT(NL80211_STA_FLAG_MFP);
3345                 break;
3346         case NL80211_IFTYPE_P2P_CLIENT:
3347         case NL80211_IFTYPE_STATION:
3348                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3349                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3350                 break;
3351         case NL80211_IFTYPE_MESH_POINT:
3352                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3353                                          BIT(NL80211_STA_FLAG_MFP) |
3354                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3355         default:
3356                 return -EINVAL;
3357         }
3358
3359         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3360                 if (flags[flag]) {
3361                         params->sta_flags_set |= (1<<flag);
3362
3363                         /* no longer support new API additions in old API */
3364                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3365                                 return -EINVAL;
3366                 }
3367         }
3368
3369         return 0;
3370 }
3371
3372 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3373                                  int attr)
3374 {
3375         struct nlattr *rate;
3376         u32 bitrate;
3377         u16 bitrate_compat;
3378
3379         rate = nla_nest_start(msg, attr);
3380         if (!rate)
3381                 return false;
3382
3383         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3384         bitrate = cfg80211_calculate_bitrate(info);
3385         /* report 16-bit bitrate only if we can */
3386         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3387         if (bitrate > 0 &&
3388             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3389                 return false;
3390         if (bitrate_compat > 0 &&
3391             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3392                 return false;
3393
3394         if (info->flags & RATE_INFO_FLAGS_MCS) {
3395                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3396                         return false;
3397                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3398                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3399                         return false;
3400                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3401                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3402                         return false;
3403         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3404                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3405                         return false;
3406                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3407                         return false;
3408                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3409                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3410                         return false;
3411                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3412                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3413                         return false;
3414                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3415                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3416                         return false;
3417                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3418                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3419                         return false;
3420                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3421                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3422                         return false;
3423         }
3424
3425         nla_nest_end(msg, rate);
3426         return true;
3427 }
3428
3429 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3430                                int id)
3431 {
3432         void *attr;
3433         int i = 0;
3434
3435         if (!mask)
3436                 return true;
3437
3438         attr = nla_nest_start(msg, id);
3439         if (!attr)
3440                 return false;
3441
3442         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3443                 if (!(mask & BIT(i)))
3444                         continue;
3445
3446                 if (nla_put_u8(msg, i, signal[i]))
3447                         return false;
3448         }
3449
3450         nla_nest_end(msg, attr);
3451
3452         return true;
3453 }
3454
3455 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3456                                 int flags,
3457                                 struct cfg80211_registered_device *rdev,
3458                                 struct net_device *dev,
3459                                 const u8 *mac_addr, struct station_info *sinfo)
3460 {
3461         void *hdr;
3462         struct nlattr *sinfoattr, *bss_param;
3463
3464         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3465         if (!hdr)
3466                 return -1;
3467
3468         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3469             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3470             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3471                 goto nla_put_failure;
3472
3473         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3474         if (!sinfoattr)
3475                 goto nla_put_failure;
3476         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3477             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3478                         sinfo->connected_time))
3479                 goto nla_put_failure;
3480         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3481             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3482                         sinfo->inactive_time))
3483                 goto nla_put_failure;
3484         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3485                               STATION_INFO_RX_BYTES64)) &&
3486             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3487                         (u32)sinfo->rx_bytes))
3488                 goto nla_put_failure;
3489         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3490                               STATION_INFO_TX_BYTES64)) &&
3491             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3492                         (u32)sinfo->tx_bytes))
3493                 goto nla_put_failure;
3494         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3495             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3496                         sinfo->rx_bytes))
3497                 goto nla_put_failure;
3498         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3499             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3500                         sinfo->tx_bytes))
3501                 goto nla_put_failure;
3502         if ((sinfo->filled & STATION_INFO_LLID) &&
3503             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3504                 goto nla_put_failure;
3505         if ((sinfo->filled & STATION_INFO_PLID) &&
3506             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3507                 goto nla_put_failure;
3508         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3509             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3510                        sinfo->plink_state))
3511                 goto nla_put_failure;
3512         switch (rdev->wiphy.signal_type) {
3513         case CFG80211_SIGNAL_TYPE_MBM:
3514                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3515                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3516                                sinfo->signal))
3517                         goto nla_put_failure;
3518                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3519                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3520                                sinfo->signal_avg))
3521                         goto nla_put_failure;
3522                 break;
3523         default:
3524                 break;
3525         }
3526         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3527                 if (!nl80211_put_signal(msg, sinfo->chains,
3528                                         sinfo->chain_signal,
3529                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3530                         goto nla_put_failure;
3531         }
3532         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3533                 if (!nl80211_put_signal(msg, sinfo->chains,
3534                                         sinfo->chain_signal_avg,
3535                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3536                         goto nla_put_failure;
3537         }
3538         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3539                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3540                                           NL80211_STA_INFO_TX_BITRATE))
3541                         goto nla_put_failure;
3542         }
3543         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3544                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3545                                           NL80211_STA_INFO_RX_BITRATE))
3546                         goto nla_put_failure;
3547         }
3548         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3549             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3550                         sinfo->rx_packets))
3551                 goto nla_put_failure;
3552         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3553             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3554                         sinfo->tx_packets))
3555                 goto nla_put_failure;
3556         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3557             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3558                         sinfo->tx_retries))
3559                 goto nla_put_failure;
3560         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3561             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3562                         sinfo->tx_failed))
3563                 goto nla_put_failure;
3564         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3565             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3566                         sinfo->beacon_loss_count))
3567                 goto nla_put_failure;
3568         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3569             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3570                         sinfo->local_pm))
3571                 goto nla_put_failure;
3572         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3573             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3574                         sinfo->peer_pm))
3575                 goto nla_put_failure;
3576         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3577             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3578                         sinfo->nonpeer_pm))
3579                 goto nla_put_failure;
3580         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3581                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3582                 if (!bss_param)
3583                         goto nla_put_failure;
3584
3585                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3586                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3587                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3588                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3589                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3590                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3591                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3592                                sinfo->bss_param.dtim_period) ||
3593                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3594                                 sinfo->bss_param.beacon_interval))
3595                         goto nla_put_failure;
3596
3597                 nla_nest_end(msg, bss_param);
3598         }
3599         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3600             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3601                     sizeof(struct nl80211_sta_flag_update),
3602                     &sinfo->sta_flags))
3603                 goto nla_put_failure;
3604         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3605                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3606                             sinfo->t_offset))
3607                 goto nla_put_failure;
3608         nla_nest_end(msg, sinfoattr);
3609
3610         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3611             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3612                     sinfo->assoc_req_ies))
3613                 goto nla_put_failure;
3614
3615         return genlmsg_end(msg, hdr);
3616
3617  nla_put_failure:
3618         genlmsg_cancel(msg, hdr);
3619         return -EMSGSIZE;
3620 }
3621
3622 static int nl80211_dump_station(struct sk_buff *skb,
3623                                 struct netlink_callback *cb)
3624 {
3625         struct station_info sinfo;
3626         struct cfg80211_registered_device *dev;
3627         struct wireless_dev *wdev;
3628         u8 mac_addr[ETH_ALEN];
3629         int sta_idx = cb->args[2];
3630         int err;
3631
3632         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3633         if (err)
3634                 return err;
3635
3636         if (!wdev->netdev) {
3637                 err = -EINVAL;
3638                 goto out_err;
3639         }
3640
3641         if (!dev->ops->dump_station) {
3642                 err = -EOPNOTSUPP;
3643                 goto out_err;
3644         }
3645
3646         while (1) {
3647                 memset(&sinfo, 0, sizeof(sinfo));
3648                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3649                                         mac_addr, &sinfo);
3650                 if (err == -ENOENT)
3651                         break;
3652                 if (err)
3653                         goto out_err;
3654
3655                 if (nl80211_send_station(skb,
3656                                 NETLINK_CB(cb->skb).portid,
3657                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3658                                 dev, wdev->netdev, mac_addr,
3659                                 &sinfo) < 0)
3660                         goto out;
3661
3662                 sta_idx++;
3663         }
3664
3665
3666  out:
3667         cb->args[2] = sta_idx;
3668         err = skb->len;
3669  out_err:
3670         nl80211_finish_wdev_dump(dev);
3671
3672         return err;
3673 }
3674
3675 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3676 {
3677         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3678         struct net_device *dev = info->user_ptr[1];
3679         struct station_info sinfo;
3680         struct sk_buff *msg;
3681         u8 *mac_addr = NULL;
3682         int err;
3683
3684         memset(&sinfo, 0, sizeof(sinfo));
3685
3686         if (!info->attrs[NL80211_ATTR_MAC])
3687                 return -EINVAL;
3688
3689         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3690
3691         if (!rdev->ops->get_station)
3692                 return -EOPNOTSUPP;
3693
3694         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3695         if (err)
3696                 return err;
3697
3698         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3699         if (!msg)
3700                 return -ENOMEM;
3701
3702         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3703                                  rdev, dev, mac_addr, &sinfo) < 0) {
3704                 nlmsg_free(msg);
3705                 return -ENOBUFS;
3706         }
3707
3708         return genlmsg_reply(msg, info);
3709 }
3710
3711 int cfg80211_check_station_change(struct wiphy *wiphy,
3712                                   struct station_parameters *params,
3713                                   enum cfg80211_station_type statype)
3714 {
3715         if (params->listen_interval != -1)
3716                 return -EINVAL;
3717         if (params->aid)
3718                 return -EINVAL;
3719
3720         /* When you run into this, adjust the code below for the new flag */
3721         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3722
3723         switch (statype) {
3724         case CFG80211_STA_MESH_PEER_KERNEL:
3725         case CFG80211_STA_MESH_PEER_USER:
3726                 /*
3727                  * No ignoring the TDLS flag here -- the userspace mesh
3728                  * code doesn't have the bug of including TDLS in the
3729                  * mask everywhere.
3730                  */
3731                 if (params->sta_flags_mask &
3732                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3733                                   BIT(NL80211_STA_FLAG_MFP) |
3734                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3735                         return -EINVAL;
3736                 break;
3737         case CFG80211_STA_TDLS_PEER_SETUP:
3738         case CFG80211_STA_TDLS_PEER_ACTIVE:
3739                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3740                         return -EINVAL;
3741                 /* ignore since it can't change */
3742                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3743                 break;
3744         default:
3745                 /* disallow mesh-specific things */
3746                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3747                         return -EINVAL;
3748                 if (params->local_pm)
3749                         return -EINVAL;
3750                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3751                         return -EINVAL;
3752         }
3753
3754         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3755             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3756                 /* TDLS can't be set, ... */
3757                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3758                         return -EINVAL;
3759                 /*
3760                  * ... but don't bother the driver with it. This works around
3761                  * a hostapd/wpa_supplicant issue -- it always includes the
3762                  * TLDS_PEER flag in the mask even for AP mode.
3763                  */
3764                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3765         }
3766
3767         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3768                 /* reject other things that can't change */
3769                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3770                         return -EINVAL;
3771                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3772                         return -EINVAL;
3773                 if (params->supported_rates)
3774                         return -EINVAL;
3775                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3776                         return -EINVAL;
3777         }
3778
3779         if (statype != CFG80211_STA_AP_CLIENT) {
3780                 if (params->vlan)
3781                         return -EINVAL;
3782         }
3783
3784         switch (statype) {
3785         case CFG80211_STA_AP_MLME_CLIENT:
3786                 /* Use this only for authorizing/unauthorizing a station */
3787                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3788                         return -EOPNOTSUPP;
3789                 break;
3790         case CFG80211_STA_AP_CLIENT:
3791                 /* accept only the listed bits */
3792                 if (params->sta_flags_mask &
3793                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3794                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3795                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3796                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3797                                   BIT(NL80211_STA_FLAG_WME) |
3798                                   BIT(NL80211_STA_FLAG_MFP)))
3799                         return -EINVAL;
3800
3801                 /* but authenticated/associated only if driver handles it */
3802                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3803                     params->sta_flags_mask &
3804                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3805                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3806                         return -EINVAL;
3807                 break;
3808         case CFG80211_STA_IBSS:
3809         case CFG80211_STA_AP_STA:
3810                 /* reject any changes other than AUTHORIZED */
3811                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3812                         return -EINVAL;
3813                 break;
3814         case CFG80211_STA_TDLS_PEER_SETUP:
3815                 /* reject any changes other than AUTHORIZED or WME */
3816                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3817                                                BIT(NL80211_STA_FLAG_WME)))
3818                         return -EINVAL;
3819                 /* force (at least) rates when authorizing */
3820                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3821                     !params->supported_rates)
3822                         return -EINVAL;
3823                 break;
3824         case CFG80211_STA_TDLS_PEER_ACTIVE:
3825                 /* reject any changes */
3826                 return -EINVAL;
3827         case CFG80211_STA_MESH_PEER_KERNEL:
3828                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3829                         return -EINVAL;
3830                 break;
3831         case CFG80211_STA_MESH_PEER_USER:
3832                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3833                         return -EINVAL;
3834                 break;
3835         }
3836
3837         return 0;
3838 }
3839 EXPORT_SYMBOL(cfg80211_check_station_change);
3840
3841 /*
3842  * Get vlan interface making sure it is running and on the right wiphy.
3843  */
3844 static struct net_device *get_vlan(struct genl_info *info,
3845                                    struct cfg80211_registered_device *rdev)
3846 {
3847         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3848         struct net_device *v;
3849         int ret;
3850
3851         if (!vlanattr)
3852                 return NULL;
3853
3854         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3855         if (!v)
3856                 return ERR_PTR(-ENODEV);
3857
3858         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3859                 ret = -EINVAL;
3860                 goto error;
3861         }
3862
3863         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3864             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3865             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3866                 ret = -EINVAL;
3867                 goto error;
3868         }
3869
3870         if (!netif_running(v)) {
3871                 ret = -ENETDOWN;
3872                 goto error;
3873         }
3874
3875         return v;
3876  error:
3877         dev_put(v);
3878         return ERR_PTR(ret);
3879 }
3880
3881 static struct nla_policy
3882 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3883         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3884         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3885 };
3886
3887 static int nl80211_parse_sta_wme(struct genl_info *info,
3888                                  struct station_parameters *params)
3889 {
3890         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3891         struct nlattr *nla;
3892         int err;
3893
3894         /* parse WME attributes if present */
3895         if (!info->attrs[NL80211_ATTR_STA_WME])
3896                 return 0;
3897
3898         nla = info->attrs[NL80211_ATTR_STA_WME];
3899         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3900                                nl80211_sta_wme_policy);
3901         if (err)
3902                 return err;
3903
3904         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3905                 params->uapsd_queues = nla_get_u8(
3906                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3907         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3908                 return -EINVAL;
3909
3910         if (tb[NL80211_STA_WME_MAX_SP])
3911                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3912
3913         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3914                 return -EINVAL;
3915
3916         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3917
3918         return 0;
3919 }
3920
3921 static int nl80211_parse_sta_channel_info(struct genl_info *info,
3922                                       struct station_parameters *params)
3923 {
3924         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
3925                 params->supported_channels =
3926                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3927                 params->supported_channels_len =
3928                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
3929                 /*
3930                  * Need to include at least one (first channel, number of
3931                  * channels) tuple for each subband, and must have proper
3932                  * tuples for the rest of the data as well.
3933                  */
3934                 if (params->supported_channels_len < 2)
3935                         return -EINVAL;
3936                 if (params->supported_channels_len % 2)
3937                         return -EINVAL;
3938         }
3939
3940         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
3941                 params->supported_oper_classes =
3942                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3943                 params->supported_oper_classes_len =
3944                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
3945                 /*
3946                  * The value of the Length field of the Supported Operating
3947                  * Classes element is between 2 and 253.
3948                  */
3949                 if (params->supported_oper_classes_len < 2 ||
3950                     params->supported_oper_classes_len > 253)
3951                         return -EINVAL;
3952         }
3953         return 0;
3954 }
3955
3956 static int nl80211_set_station_tdls(struct genl_info *info,
3957                                     struct station_parameters *params)
3958 {
3959         int err;
3960         /* Dummy STA entry gets updated once the peer capabilities are known */
3961         if (info->attrs[NL80211_ATTR_PEER_AID])
3962                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3963         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3964                 params->ht_capa =
3965                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3966         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3967                 params->vht_capa =
3968                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3969
3970         err = nl80211_parse_sta_channel_info(info, params);
3971         if (err)
3972                 return err;
3973
3974         return nl80211_parse_sta_wme(info, params);
3975 }
3976
3977 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3978 {
3979         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3980         struct net_device *dev = info->user_ptr[1];
3981         struct station_parameters params;
3982         u8 *mac_addr;
3983         int err;
3984
3985         memset(&params, 0, sizeof(params));
3986
3987         params.listen_interval = -1;
3988
3989         if (!rdev->ops->change_station)
3990                 return -EOPNOTSUPP;
3991
3992         if (info->attrs[NL80211_ATTR_STA_AID])
3993                 return -EINVAL;
3994
3995         if (!info->attrs[NL80211_ATTR_MAC])
3996                 return -EINVAL;
3997
3998         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3999
4000         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4001                 params.supported_rates =
4002                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4003                 params.supported_rates_len =
4004                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4005         }
4006
4007         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4008                 params.capability =
4009                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4010                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4011         }
4012
4013         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4014                 params.ext_capab =
4015                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4016                 params.ext_capab_len =
4017                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4018         }
4019
4020         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4021                 return -EINVAL;
4022
4023         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4024                 return -EINVAL;
4025
4026         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4027                 params.plink_action =
4028                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4029                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4030                         return -EINVAL;
4031         }
4032
4033         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4034                 params.plink_state =
4035                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4036                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4037                         return -EINVAL;
4038                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4039         }
4040
4041         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4042                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4043                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4044
4045                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4046                     pm > NL80211_MESH_POWER_MAX)
4047                         return -EINVAL;
4048
4049                 params.local_pm = pm;
4050         }
4051
4052         /* Include parameters for TDLS peer (will check later) */
4053         err = nl80211_set_station_tdls(info, &params);
4054         if (err)
4055                 return err;
4056
4057         params.vlan = get_vlan(info, rdev);
4058         if (IS_ERR(params.vlan))
4059                 return PTR_ERR(params.vlan);
4060
4061         switch (dev->ieee80211_ptr->iftype) {
4062         case NL80211_IFTYPE_AP:
4063         case NL80211_IFTYPE_AP_VLAN:
4064         case NL80211_IFTYPE_P2P_GO:
4065         case NL80211_IFTYPE_P2P_CLIENT:
4066         case NL80211_IFTYPE_STATION:
4067         case NL80211_IFTYPE_ADHOC:
4068         case NL80211_IFTYPE_MESH_POINT:
4069                 break;
4070         default:
4071                 err = -EOPNOTSUPP;
4072                 goto out_put_vlan;
4073         }
4074
4075         /* driver will call cfg80211_check_station_change() */
4076         err = rdev_change_station(rdev, dev, mac_addr, &params);
4077
4078  out_put_vlan:
4079         if (params.vlan)
4080                 dev_put(params.vlan);
4081
4082         return err;
4083 }
4084
4085 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4086 {
4087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4088         int err;
4089         struct net_device *dev = info->user_ptr[1];
4090         struct station_parameters params;
4091         u8 *mac_addr = NULL;
4092
4093         memset(&params, 0, sizeof(params));
4094
4095         if (!rdev->ops->add_station)
4096                 return -EOPNOTSUPP;
4097
4098         if (!info->attrs[NL80211_ATTR_MAC])
4099                 return -EINVAL;
4100
4101         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4102                 return -EINVAL;
4103
4104         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4105                 return -EINVAL;
4106
4107         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4108             !info->attrs[NL80211_ATTR_PEER_AID])
4109                 return -EINVAL;
4110
4111         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4112         params.supported_rates =
4113                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4114         params.supported_rates_len =
4115                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4116         params.listen_interval =
4117                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4118
4119         if (info->attrs[NL80211_ATTR_PEER_AID])
4120                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4121         else
4122                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4123         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4124                 return -EINVAL;
4125
4126         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4127                 params.capability =
4128                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4129                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4130         }
4131
4132         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4133                 params.ext_capab =
4134                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4135                 params.ext_capab_len =
4136                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4137         }
4138
4139         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4140                 params.ht_capa =
4141                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4142
4143         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4144                 params.vht_capa =
4145                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4146
4147         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4148                 params.plink_action =
4149                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4150                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4151                         return -EINVAL;
4152         }
4153
4154         err = nl80211_parse_sta_channel_info(info, &params);
4155         if (err)
4156                 return err;
4157
4158         err = nl80211_parse_sta_wme(info, &params);
4159         if (err)
4160                 return err;
4161
4162         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4163                 return -EINVAL;
4164
4165         /* When you run into this, adjust the code below for the new flag */
4166         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4167
4168         switch (dev->ieee80211_ptr->iftype) {
4169         case NL80211_IFTYPE_AP:
4170         case NL80211_IFTYPE_AP_VLAN:
4171         case NL80211_IFTYPE_P2P_GO:
4172                 /* ignore WME attributes if iface/sta is not capable */
4173                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4174                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4175                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4176
4177                 /* TDLS peers cannot be added */
4178                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4179                     info->attrs[NL80211_ATTR_PEER_AID])
4180                         return -EINVAL;
4181                 /* but don't bother the driver with it */
4182                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4183
4184                 /* allow authenticated/associated only if driver handles it */
4185                 if (!(rdev->wiphy.features &
4186                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4187                     params.sta_flags_mask &
4188                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4189                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4190                         return -EINVAL;
4191
4192                 /* must be last in here for error handling */
4193                 params.vlan = get_vlan(info, rdev);
4194                 if (IS_ERR(params.vlan))
4195                         return PTR_ERR(params.vlan);
4196                 break;
4197         case NL80211_IFTYPE_MESH_POINT:
4198                 /* ignore uAPSD data */
4199                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4200
4201                 /* associated is disallowed */
4202                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4203                         return -EINVAL;
4204                 /* TDLS peers cannot be added */
4205                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4206                     info->attrs[NL80211_ATTR_PEER_AID])
4207                         return -EINVAL;
4208                 break;
4209         case NL80211_IFTYPE_STATION:
4210         case NL80211_IFTYPE_P2P_CLIENT:
4211                 /* ignore uAPSD data */
4212                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4213
4214                 /* these are disallowed */
4215                 if (params.sta_flags_mask &
4216                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4217                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4218                         return -EINVAL;
4219                 /* Only TDLS peers can be added */
4220                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4221                         return -EINVAL;
4222                 /* Can only add if TDLS ... */
4223                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4224                         return -EOPNOTSUPP;
4225                 /* ... with external setup is supported */
4226                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4227                         return -EOPNOTSUPP;
4228                 /*
4229                  * Older wpa_supplicant versions always mark the TDLS peer
4230                  * as authorized, but it shouldn't yet be.
4231                  */
4232                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4233                 break;
4234         default:
4235                 return -EOPNOTSUPP;
4236         }
4237
4238         /* be aware of params.vlan when changing code here */
4239
4240         err = rdev_add_station(rdev, dev, mac_addr, &params);
4241
4242         if (params.vlan)
4243                 dev_put(params.vlan);
4244         return err;
4245 }
4246
4247 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4248 {
4249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4250         struct net_device *dev = info->user_ptr[1];
4251         u8 *mac_addr = NULL;
4252
4253         if (info->attrs[NL80211_ATTR_MAC])
4254                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4255
4256         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4257             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4258             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4259             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4260                 return -EINVAL;
4261
4262         if (!rdev->ops->del_station)
4263                 return -EOPNOTSUPP;
4264
4265         return rdev_del_station(rdev, dev, mac_addr);
4266 }
4267
4268 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4269                                 int flags, struct net_device *dev,
4270                                 u8 *dst, u8 *next_hop,
4271                                 struct mpath_info *pinfo)
4272 {
4273         void *hdr;
4274         struct nlattr *pinfoattr;
4275
4276         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4277         if (!hdr)
4278                 return -1;
4279
4280         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4281             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4282             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4283             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4284                 goto nla_put_failure;
4285
4286         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4287         if (!pinfoattr)
4288                 goto nla_put_failure;
4289         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4290             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4291                         pinfo->frame_qlen))
4292                 goto nla_put_failure;
4293         if (((pinfo->filled & MPATH_INFO_SN) &&
4294              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4295             ((pinfo->filled & MPATH_INFO_METRIC) &&
4296              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4297                          pinfo->metric)) ||
4298             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4299              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4300                          pinfo->exptime)) ||
4301             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4302              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4303                         pinfo->flags)) ||
4304             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4305              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4306                          pinfo->discovery_timeout)) ||
4307             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4308              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4309                         pinfo->discovery_retries)))
4310                 goto nla_put_failure;
4311
4312         nla_nest_end(msg, pinfoattr);
4313
4314         return genlmsg_end(msg, hdr);
4315
4316  nla_put_failure:
4317         genlmsg_cancel(msg, hdr);
4318         return -EMSGSIZE;
4319 }
4320
4321 static int nl80211_dump_mpath(struct sk_buff *skb,
4322                               struct netlink_callback *cb)
4323 {
4324         struct mpath_info pinfo;
4325         struct cfg80211_registered_device *dev;
4326         struct wireless_dev *wdev;
4327         u8 dst[ETH_ALEN];
4328         u8 next_hop[ETH_ALEN];
4329         int path_idx = cb->args[2];
4330         int err;
4331
4332         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4333         if (err)
4334                 return err;
4335
4336         if (!dev->ops->dump_mpath) {
4337                 err = -EOPNOTSUPP;
4338                 goto out_err;
4339         }
4340
4341         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4342                 err = -EOPNOTSUPP;
4343                 goto out_err;
4344         }
4345
4346         while (1) {
4347                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4348                                       next_hop, &pinfo);
4349                 if (err == -ENOENT)
4350                         break;
4351                 if (err)
4352                         goto out_err;
4353
4354                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4355                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4356                                        wdev->netdev, dst, next_hop,
4357                                        &pinfo) < 0)
4358                         goto out;
4359
4360                 path_idx++;
4361         }
4362
4363
4364  out:
4365         cb->args[2] = path_idx;
4366         err = skb->len;
4367  out_err:
4368         nl80211_finish_wdev_dump(dev);
4369         return err;
4370 }
4371
4372 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4373 {
4374         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4375         int err;
4376         struct net_device *dev = info->user_ptr[1];
4377         struct mpath_info pinfo;
4378         struct sk_buff *msg;
4379         u8 *dst = NULL;
4380         u8 next_hop[ETH_ALEN];
4381
4382         memset(&pinfo, 0, sizeof(pinfo));
4383
4384         if (!info->attrs[NL80211_ATTR_MAC])
4385                 return -EINVAL;
4386
4387         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4388
4389         if (!rdev->ops->get_mpath)
4390                 return -EOPNOTSUPP;
4391
4392         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4393                 return -EOPNOTSUPP;
4394
4395         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4396         if (err)
4397                 return err;
4398
4399         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4400         if (!msg)
4401                 return -ENOMEM;
4402
4403         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4404                                  dev, dst, next_hop, &pinfo) < 0) {
4405                 nlmsg_free(msg);
4406                 return -ENOBUFS;
4407         }
4408
4409         return genlmsg_reply(msg, info);
4410 }
4411
4412 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4413 {
4414         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4415         struct net_device *dev = info->user_ptr[1];
4416         u8 *dst = NULL;
4417         u8 *next_hop = NULL;
4418
4419         if (!info->attrs[NL80211_ATTR_MAC])
4420                 return -EINVAL;
4421
4422         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4423                 return -EINVAL;
4424
4425         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4426         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4427
4428         if (!rdev->ops->change_mpath)
4429                 return -EOPNOTSUPP;
4430
4431         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4432                 return -EOPNOTSUPP;
4433
4434         return rdev_change_mpath(rdev, dev, dst, next_hop);
4435 }
4436
4437 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4438 {
4439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4440         struct net_device *dev = info->user_ptr[1];
4441         u8 *dst = NULL;
4442         u8 *next_hop = NULL;
4443
4444         if (!info->attrs[NL80211_ATTR_MAC])
4445                 return -EINVAL;
4446
4447         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4448                 return -EINVAL;
4449
4450         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4451         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4452
4453         if (!rdev->ops->add_mpath)
4454                 return -EOPNOTSUPP;
4455
4456         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4457                 return -EOPNOTSUPP;
4458
4459         return rdev_add_mpath(rdev, dev, dst, next_hop);
4460 }
4461
4462 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4463 {
4464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4465         struct net_device *dev = info->user_ptr[1];
4466         u8 *dst = NULL;
4467
4468         if (info->attrs[NL80211_ATTR_MAC])
4469                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4470
4471         if (!rdev->ops->del_mpath)
4472                 return -EOPNOTSUPP;
4473
4474         return rdev_del_mpath(rdev, dev, dst);
4475 }
4476
4477 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4478 {
4479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4480         struct net_device *dev = info->user_ptr[1];
4481         struct bss_parameters params;
4482
4483         memset(&params, 0, sizeof(params));
4484         /* default to not changing parameters */
4485         params.use_cts_prot = -1;
4486         params.use_short_preamble = -1;
4487         params.use_short_slot_time = -1;
4488         params.ap_isolate = -1;
4489         params.ht_opmode = -1;
4490         params.p2p_ctwindow = -1;
4491         params.p2p_opp_ps = -1;
4492
4493         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4494                 params.use_cts_prot =
4495                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4496         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4497                 params.use_short_preamble =
4498                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4499         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4500                 params.use_short_slot_time =
4501                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4502         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4503                 params.basic_rates =
4504                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4505                 params.basic_rates_len =
4506                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4507         }
4508         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4509                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4510         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4511                 params.ht_opmode =
4512                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4513
4514         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4515                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4516                         return -EINVAL;
4517                 params.p2p_ctwindow =
4518                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4519                 if (params.p2p_ctwindow < 0)
4520                         return -EINVAL;
4521                 if (params.p2p_ctwindow != 0 &&
4522                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4523                         return -EINVAL;
4524         }
4525
4526         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4527                 u8 tmp;
4528
4529                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4530                         return -EINVAL;
4531                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4532                 if (tmp > 1)
4533                         return -EINVAL;
4534                 params.p2p_opp_ps = tmp;
4535                 if (params.p2p_opp_ps &&
4536                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4537                         return -EINVAL;
4538         }
4539
4540         if (!rdev->ops->change_bss)
4541                 return -EOPNOTSUPP;
4542
4543         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4544             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4545                 return -EOPNOTSUPP;
4546
4547         return rdev_change_bss(rdev, dev, &params);
4548 }
4549
4550 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4551         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4552         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4553         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4554         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4555         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4556         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4557 };
4558
4559 static int parse_reg_rule(struct nlattr *tb[],
4560         struct ieee80211_reg_rule *reg_rule)
4561 {
4562         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4563         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4564
4565         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4566                 return -EINVAL;
4567         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4568                 return -EINVAL;
4569         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4570                 return -EINVAL;
4571         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4572                 return -EINVAL;
4573         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4574                 return -EINVAL;
4575
4576         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4577
4578         freq_range->start_freq_khz =
4579                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4580         freq_range->end_freq_khz =
4581                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4582         freq_range->max_bandwidth_khz =
4583                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4584
4585         power_rule->max_eirp =
4586                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4587
4588         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4589                 power_rule->max_antenna_gain =
4590                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4591
4592         return 0;
4593 }
4594
4595 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4596 {
4597         int r;
4598         char *data = NULL;
4599         enum nl80211_user_reg_hint_type user_reg_hint_type;
4600
4601         /*
4602          * You should only get this when cfg80211 hasn't yet initialized
4603          * completely when built-in to the kernel right between the time
4604          * window between nl80211_init() and regulatory_init(), if that is
4605          * even possible.
4606          */
4607         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4608                 return -EINPROGRESS;
4609
4610         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4611                 return -EINVAL;
4612
4613         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4614
4615         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4616                 user_reg_hint_type =
4617                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4618         else
4619                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4620
4621         switch (user_reg_hint_type) {
4622         case NL80211_USER_REG_HINT_USER:
4623         case NL80211_USER_REG_HINT_CELL_BASE:
4624                 break;
4625         default:
4626                 return -EINVAL;
4627         }
4628
4629         r = regulatory_hint_user(data, user_reg_hint_type);
4630
4631         return r;
4632 }
4633
4634 static int nl80211_get_mesh_config(struct sk_buff *skb,
4635                                    struct genl_info *info)
4636 {
4637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4638         struct net_device *dev = info->user_ptr[1];
4639         struct wireless_dev *wdev = dev->ieee80211_ptr;
4640         struct mesh_config cur_params;
4641         int err = 0;
4642         void *hdr;
4643         struct nlattr *pinfoattr;
4644         struct sk_buff *msg;
4645
4646         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4647                 return -EOPNOTSUPP;
4648
4649         if (!rdev->ops->get_mesh_config)
4650                 return -EOPNOTSUPP;
4651
4652         wdev_lock(wdev);
4653         /* If not connected, get default parameters */
4654         if (!wdev->mesh_id_len)
4655                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4656         else
4657                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4658         wdev_unlock(wdev);
4659
4660         if (err)
4661                 return err;
4662
4663         /* Draw up a netlink message to send back */
4664         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4665         if (!msg)
4666                 return -ENOMEM;
4667         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4668                              NL80211_CMD_GET_MESH_CONFIG);
4669         if (!hdr)
4670                 goto out;
4671         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4672         if (!pinfoattr)
4673                 goto nla_put_failure;
4674         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4675             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4676                         cur_params.dot11MeshRetryTimeout) ||
4677             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4678                         cur_params.dot11MeshConfirmTimeout) ||
4679             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4680                         cur_params.dot11MeshHoldingTimeout) ||
4681             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4682                         cur_params.dot11MeshMaxPeerLinks) ||
4683             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4684                        cur_params.dot11MeshMaxRetries) ||
4685             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4686                        cur_params.dot11MeshTTL) ||
4687             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4688                        cur_params.element_ttl) ||
4689             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4690                        cur_params.auto_open_plinks) ||
4691             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4692                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4693             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4694                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4695             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4696                         cur_params.path_refresh_time) ||
4697             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4698                         cur_params.min_discovery_timeout) ||
4699             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4700                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4701             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4702                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4703             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4704                         cur_params.dot11MeshHWMPperrMinInterval) ||
4705             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4706                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4707             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4708                        cur_params.dot11MeshHWMPRootMode) ||
4709             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4710                         cur_params.dot11MeshHWMPRannInterval) ||
4711             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4712                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4713             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4714                        cur_params.dot11MeshForwarding) ||
4715             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4716                         cur_params.rssi_threshold) ||
4717             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4718                         cur_params.ht_opmode) ||
4719             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4720                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4721             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4722                         cur_params.dot11MeshHWMProotInterval) ||
4723             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4724                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4725             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4726                         cur_params.power_mode) ||
4727             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4728                         cur_params.dot11MeshAwakeWindowDuration) ||
4729             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4730                         cur_params.plink_timeout))
4731                 goto nla_put_failure;
4732         nla_nest_end(msg, pinfoattr);
4733         genlmsg_end(msg, hdr);
4734         return genlmsg_reply(msg, info);
4735
4736  nla_put_failure:
4737         genlmsg_cancel(msg, hdr);
4738  out:
4739         nlmsg_free(msg);
4740         return -ENOBUFS;
4741 }
4742
4743 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4744         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4745         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4746         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4747         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4748         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4749         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4750         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4751         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4752         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4753         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4754         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4755         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4756         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4757         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4758         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4759         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4760         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4761         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4762         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4763         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4764         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4765         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4766         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4767         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4768         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4769         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4770         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4771         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4772 };
4773
4774 static const struct nla_policy
4775         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4776         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4777         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4778         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4779         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4780         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4781         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4782         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4783                                     .len = IEEE80211_MAX_DATA_LEN },
4784         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4785 };
4786
4787 static int nl80211_parse_mesh_config(struct genl_info *info,
4788                                      struct mesh_config *cfg,
4789                                      u32 *mask_out)
4790 {
4791         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4792         u32 mask = 0;
4793
4794 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4795 do {                                                                        \
4796         if (tb[attr]) {                                                     \
4797                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4798                         return -EINVAL;                                     \
4799                 cfg->param = fn(tb[attr]);                                  \
4800                 mask |= (1 << (attr - 1));                                  \
4801         }                                                                   \
4802 } while (0)
4803
4804
4805         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4806                 return -EINVAL;
4807         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4808                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4809                              nl80211_meshconf_params_policy))
4810                 return -EINVAL;
4811
4812         /* This makes sure that there aren't more than 32 mesh config
4813          * parameters (otherwise our bitfield scheme would not work.) */
4814         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4815
4816         /* Fill in the params struct */
4817         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4818                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4819                                   nla_get_u16);
4820         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4821                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4822                                   nla_get_u16);
4823         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4824                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4825                                   nla_get_u16);
4826         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4827                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4828                                   nla_get_u16);
4829         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4830                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4831                                   nla_get_u8);
4832         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4833                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4834         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4835                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4836                                   nla_get_u8);
4837         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4838                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4839                                   nla_get_u8);
4840         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4841                                   1, 255, mask,
4842                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4843                                   nla_get_u32);
4844         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4845                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4846                                   nla_get_u8);
4847         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4848                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4849                                   nla_get_u32);
4850         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4851                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4852                                   nla_get_u16);
4853         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4854                                   1, 65535, mask,
4855                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4856                                   nla_get_u32);
4857         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4858                                   1, 65535, mask,
4859                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4860                                   nla_get_u16);
4861         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4862                                   1, 65535, mask,
4863                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4864                                   nla_get_u16);
4865         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4866                                   dot11MeshHWMPnetDiameterTraversalTime,
4867                                   1, 65535, mask,
4868                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4869                                   nla_get_u16);
4870         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4871                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4872                                   nla_get_u8);
4873         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4874                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4875                                   nla_get_u16);
4876         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4877                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4878                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4879                                   nla_get_u8);
4880         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4881                                   mask, NL80211_MESHCONF_FORWARDING,
4882                                   nla_get_u8);
4883         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4884                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4885                                   nla_get_s32);
4886         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4887                                   mask, NL80211_MESHCONF_HT_OPMODE,
4888                                   nla_get_u16);
4889         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4890                                   1, 65535, mask,
4891                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4892                                   nla_get_u32);
4893         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4894                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4895                                   nla_get_u16);
4896         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4897                                   dot11MeshHWMPconfirmationInterval,
4898                                   1, 65535, mask,
4899                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4900                                   nla_get_u16);
4901         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4902                                   NL80211_MESH_POWER_ACTIVE,
4903                                   NL80211_MESH_POWER_MAX,
4904                                   mask, NL80211_MESHCONF_POWER_MODE,
4905                                   nla_get_u32);
4906         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4907                                   0, 65535, mask,
4908                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4909         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4910                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4911                                   nla_get_u32);
4912         if (mask_out)
4913                 *mask_out = mask;
4914
4915         return 0;
4916
4917 #undef FILL_IN_MESH_PARAM_IF_SET
4918 }
4919
4920 static int nl80211_parse_mesh_setup(struct genl_info *info,
4921                                      struct mesh_setup *setup)
4922 {
4923         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4924         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4925
4926         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4927                 return -EINVAL;
4928         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4929                              info->attrs[NL80211_ATTR_MESH_SETUP],
4930                              nl80211_mesh_setup_params_policy))
4931                 return -EINVAL;
4932
4933         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4934                 setup->sync_method =
4935                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4936                  IEEE80211_SYNC_METHOD_VENDOR :
4937                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4938
4939         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4940                 setup->path_sel_proto =
4941                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4942                  IEEE80211_PATH_PROTOCOL_VENDOR :
4943                  IEEE80211_PATH_PROTOCOL_HWMP;
4944
4945         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4946                 setup->path_metric =
4947                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4948                  IEEE80211_PATH_METRIC_VENDOR :
4949                  IEEE80211_PATH_METRIC_AIRTIME;
4950
4951
4952         if (tb[NL80211_MESH_SETUP_IE]) {
4953                 struct nlattr *ieattr =
4954                         tb[NL80211_MESH_SETUP_IE];
4955                 if (!is_valid_ie_attr(ieattr))
4956                         return -EINVAL;
4957                 setup->ie = nla_data(ieattr);
4958                 setup->ie_len = nla_len(ieattr);
4959         }
4960         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4961             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4962                 return -EINVAL;
4963         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4964         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4965         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4966         if (setup->is_secure)
4967                 setup->user_mpm = true;
4968
4969         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4970                 if (!setup->user_mpm)
4971                         return -EINVAL;
4972                 setup->auth_id =
4973                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4974         }
4975
4976         return 0;
4977 }
4978
4979 static int nl80211_update_mesh_config(struct sk_buff *skb,
4980                                       struct genl_info *info)
4981 {
4982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4983         struct net_device *dev = info->user_ptr[1];
4984         struct wireless_dev *wdev = dev->ieee80211_ptr;
4985         struct mesh_config cfg;
4986         u32 mask;
4987         int err;
4988
4989         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4990                 return -EOPNOTSUPP;
4991
4992         if (!rdev->ops->update_mesh_config)
4993                 return -EOPNOTSUPP;
4994
4995         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4996         if (err)
4997                 return err;
4998
4999         wdev_lock(wdev);
5000         if (!wdev->mesh_id_len)
5001                 err = -ENOLINK;
5002
5003         if (!err)
5004                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5005
5006         wdev_unlock(wdev);
5007
5008         return err;
5009 }
5010
5011 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5012 {
5013         const struct ieee80211_regdomain *regdom;
5014         struct sk_buff *msg;
5015         void *hdr = NULL;
5016         struct nlattr *nl_reg_rules;
5017         unsigned int i;
5018
5019         if (!cfg80211_regdomain)
5020                 return -EINVAL;
5021
5022         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5023         if (!msg)
5024                 return -ENOBUFS;
5025
5026         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5027                              NL80211_CMD_GET_REG);
5028         if (!hdr)
5029                 goto put_failure;
5030
5031         if (reg_last_request_cell_base() &&
5032             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5033                         NL80211_USER_REG_HINT_CELL_BASE))
5034                 goto nla_put_failure;
5035
5036         rcu_read_lock();
5037         regdom = rcu_dereference(cfg80211_regdomain);
5038
5039         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5040             (regdom->dfs_region &&
5041              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5042                 goto nla_put_failure_rcu;
5043
5044         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5045         if (!nl_reg_rules)
5046                 goto nla_put_failure_rcu;
5047
5048         for (i = 0; i < regdom->n_reg_rules; i++) {
5049                 struct nlattr *nl_reg_rule;
5050                 const struct ieee80211_reg_rule *reg_rule;
5051                 const struct ieee80211_freq_range *freq_range;
5052                 const struct ieee80211_power_rule *power_rule;
5053
5054                 reg_rule = &regdom->reg_rules[i];
5055                 freq_range = &reg_rule->freq_range;
5056                 power_rule = &reg_rule->power_rule;
5057
5058                 nl_reg_rule = nla_nest_start(msg, i);
5059                 if (!nl_reg_rule)
5060                         goto nla_put_failure_rcu;
5061
5062                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5063                                 reg_rule->flags) ||
5064                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5065                                 freq_range->start_freq_khz) ||
5066                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5067                                 freq_range->end_freq_khz) ||
5068                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5069                                 freq_range->max_bandwidth_khz) ||
5070                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5071                                 power_rule->max_antenna_gain) ||
5072                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5073                                 power_rule->max_eirp))
5074                         goto nla_put_failure_rcu;
5075
5076                 nla_nest_end(msg, nl_reg_rule);
5077         }
5078         rcu_read_unlock();
5079
5080         nla_nest_end(msg, nl_reg_rules);
5081
5082         genlmsg_end(msg, hdr);
5083         return genlmsg_reply(msg, info);
5084
5085 nla_put_failure_rcu:
5086         rcu_read_unlock();
5087 nla_put_failure:
5088         genlmsg_cancel(msg, hdr);
5089 put_failure:
5090         nlmsg_free(msg);
5091         return -EMSGSIZE;
5092 }
5093
5094 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5095 {
5096         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5097         struct nlattr *nl_reg_rule;
5098         char *alpha2 = NULL;
5099         int rem_reg_rules = 0, r = 0;
5100         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5101         u8 dfs_region = 0;
5102         struct ieee80211_regdomain *rd = NULL;
5103
5104         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5105                 return -EINVAL;
5106
5107         if (!info->attrs[NL80211_ATTR_REG_RULES])
5108                 return -EINVAL;
5109
5110         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5111
5112         if (info->attrs[NL80211_ATTR_DFS_REGION])
5113                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5114
5115         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5116                             rem_reg_rules) {
5117                 num_rules++;
5118                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5119                         return -EINVAL;
5120         }
5121
5122         size_of_regd = sizeof(struct ieee80211_regdomain) +
5123                        num_rules * sizeof(struct ieee80211_reg_rule);
5124
5125         rd = kzalloc(size_of_regd, GFP_KERNEL);
5126         if (!rd)
5127                 return -ENOMEM;
5128
5129         rd->n_reg_rules = num_rules;
5130         rd->alpha2[0] = alpha2[0];
5131         rd->alpha2[1] = alpha2[1];
5132
5133         /*
5134          * Disable DFS master mode if the DFS region was
5135          * not supported or known on this kernel.
5136          */
5137         if (reg_supported_dfs_region(dfs_region))
5138                 rd->dfs_region = dfs_region;
5139
5140         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5141                             rem_reg_rules) {
5142                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5143                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5144                           reg_rule_policy);
5145                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5146                 if (r)
5147                         goto bad_reg;
5148
5149                 rule_idx++;
5150
5151                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5152                         r = -EINVAL;
5153                         goto bad_reg;
5154                 }
5155         }
5156
5157         r = set_regdom(rd);
5158         /* set_regdom took ownership */
5159         rd = NULL;
5160
5161  bad_reg:
5162         kfree(rd);
5163         return r;
5164 }
5165
5166 static int validate_scan_freqs(struct nlattr *freqs)
5167 {
5168         struct nlattr *attr1, *attr2;
5169         int n_channels = 0, tmp1, tmp2;
5170
5171         nla_for_each_nested(attr1, freqs, tmp1) {
5172                 n_channels++;
5173                 /*
5174                  * Some hardware has a limited channel list for
5175                  * scanning, and it is pretty much nonsensical
5176                  * to scan for a channel twice, so disallow that
5177                  * and don't require drivers to check that the
5178                  * channel list they get isn't longer than what
5179                  * they can scan, as long as they can scan all
5180                  * the channels they registered at once.
5181                  */
5182                 nla_for_each_nested(attr2, freqs, tmp2)
5183                         if (attr1 != attr2 &&
5184                             nla_get_u32(attr1) == nla_get_u32(attr2))
5185                                 return 0;
5186         }
5187
5188         return n_channels;
5189 }
5190
5191 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5192 {
5193         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5194         struct wireless_dev *wdev = info->user_ptr[1];
5195         struct cfg80211_scan_request *request;
5196         struct nlattr *attr;
5197         struct wiphy *wiphy;
5198         int err, tmp, n_ssids = 0, n_channels, i;
5199         size_t ie_len;
5200
5201         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5202                 return -EINVAL;
5203
5204         wiphy = &rdev->wiphy;
5205
5206         if (!rdev->ops->scan)
5207                 return -EOPNOTSUPP;
5208
5209         if (rdev->scan_req) {
5210                 err = -EBUSY;
5211                 goto unlock;
5212         }
5213
5214         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5215                 n_channels = validate_scan_freqs(
5216                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5217                 if (!n_channels) {
5218                         err = -EINVAL;
5219                         goto unlock;
5220                 }
5221         } else {
5222                 enum ieee80211_band band;
5223                 n_channels = 0;
5224
5225                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5226                         if (wiphy->bands[band])
5227                                 n_channels += wiphy->bands[band]->n_channels;
5228         }
5229
5230         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5231                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5232                         n_ssids++;
5233
5234         if (n_ssids > wiphy->max_scan_ssids) {
5235                 err = -EINVAL;
5236                 goto unlock;
5237         }
5238
5239         if (info->attrs[NL80211_ATTR_IE])
5240                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5241         else
5242                 ie_len = 0;
5243
5244         if (ie_len > wiphy->max_scan_ie_len) {
5245                 err = -EINVAL;
5246                 goto unlock;
5247         }
5248
5249         request = kzalloc(sizeof(*request)
5250                         + sizeof(*request->ssids) * n_ssids
5251                         + sizeof(*request->channels) * n_channels
5252                         + ie_len, GFP_KERNEL);
5253         if (!request) {
5254                 err = -ENOMEM;
5255                 goto unlock;
5256         }
5257
5258         if (n_ssids)
5259                 request->ssids = (void *)&request->channels[n_channels];
5260         request->n_ssids = n_ssids;
5261         if (ie_len) {
5262                 if (request->ssids)
5263                         request->ie = (void *)(request->ssids + n_ssids);
5264                 else
5265                         request->ie = (void *)(request->channels + n_channels);
5266         }
5267
5268         i = 0;
5269         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5270                 /* user specified, bail out if channel not found */
5271                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5272                         struct ieee80211_channel *chan;
5273
5274                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5275
5276                         if (!chan) {
5277                                 err = -EINVAL;
5278                                 goto out_free;
5279                         }
5280
5281                         /* ignore disabled channels */
5282                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5283                                 continue;
5284
5285                         request->channels[i] = chan;
5286                         i++;
5287                 }
5288         } else {
5289                 enum ieee80211_band band;
5290
5291                 /* all channels */
5292                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5293                         int j;
5294                         if (!wiphy->bands[band])
5295                                 continue;
5296                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5297                                 struct ieee80211_channel *chan;
5298
5299                                 chan = &wiphy->bands[band]->channels[j];
5300
5301                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5302                                         continue;
5303
5304                                 request->channels[i] = chan;
5305                                 i++;
5306                         }
5307                 }
5308         }
5309
5310         if (!i) {
5311                 err = -EINVAL;
5312                 goto out_free;
5313         }
5314
5315         request->n_channels = i;
5316
5317         i = 0;
5318         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5319                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5320                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5321                                 err = -EINVAL;
5322                                 goto out_free;
5323                         }
5324                         request->ssids[i].ssid_len = nla_len(attr);
5325                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5326                         i++;
5327                 }
5328         }
5329
5330         if (info->attrs[NL80211_ATTR_IE]) {
5331                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5332                 memcpy((void *)request->ie,
5333                        nla_data(info->attrs[NL80211_ATTR_IE]),
5334                        request->ie_len);
5335         }
5336
5337         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5338                 if (wiphy->bands[i])
5339                         request->rates[i] =
5340                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5341
5342         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5343                 nla_for_each_nested(attr,
5344                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5345                                     tmp) {
5346                         enum ieee80211_band band = nla_type(attr);
5347
5348                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5349                                 err = -EINVAL;
5350                                 goto out_free;
5351                         }
5352                         err = ieee80211_get_ratemask(wiphy->bands[band],
5353                                                      nla_data(attr),
5354                                                      nla_len(attr),
5355                                                      &request->rates[band]);
5356                         if (err)
5357                                 goto out_free;
5358                 }
5359         }
5360
5361         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5362                 request->flags = nla_get_u32(
5363                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5364                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5365                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5366                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5367                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5368                         err = -EOPNOTSUPP;
5369                         goto out_free;
5370                 }
5371         }
5372
5373         request->no_cck =
5374                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5375
5376         request->wdev = wdev;
5377         request->wiphy = &rdev->wiphy;
5378         request->scan_start = jiffies;
5379
5380         rdev->scan_req = request;
5381         err = rdev_scan(rdev, request);
5382
5383         if (!err) {
5384                 nl80211_send_scan_start(rdev, wdev);
5385                 if (wdev->netdev)
5386                         dev_hold(wdev->netdev);
5387         } else {
5388  out_free:
5389                 rdev->scan_req = NULL;
5390                 kfree(request);
5391         }
5392
5393  unlock:
5394         return err;
5395 }
5396
5397 static int nl80211_start_sched_scan(struct sk_buff *skb,
5398                                     struct genl_info *info)
5399 {
5400         struct cfg80211_sched_scan_request *request;
5401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5402         struct net_device *dev = info->user_ptr[1];
5403         struct nlattr *attr;
5404         struct wiphy *wiphy;
5405         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5406         u32 interval;
5407         enum ieee80211_band band;
5408         size_t ie_len;
5409         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5410
5411         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5412             !rdev->ops->sched_scan_start)
5413                 return -EOPNOTSUPP;
5414
5415         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5416                 return -EINVAL;
5417
5418         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5419                 return -EINVAL;
5420
5421         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5422         if (interval == 0)
5423                 return -EINVAL;
5424
5425         wiphy = &rdev->wiphy;
5426
5427         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5428                 n_channels = validate_scan_freqs(
5429                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5430                 if (!n_channels)
5431                         return -EINVAL;
5432         } else {
5433                 n_channels = 0;
5434
5435                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5436                         if (wiphy->bands[band])
5437                                 n_channels += wiphy->bands[band]->n_channels;
5438         }
5439
5440         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5441                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5442                                     tmp)
5443                         n_ssids++;
5444
5445         if (n_ssids > wiphy->max_sched_scan_ssids)
5446                 return -EINVAL;
5447
5448         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5449                 nla_for_each_nested(attr,
5450                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5451                                     tmp)
5452                         n_match_sets++;
5453
5454         if (n_match_sets > wiphy->max_match_sets)
5455                 return -EINVAL;
5456
5457         if (info->attrs[NL80211_ATTR_IE])
5458                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5459         else
5460                 ie_len = 0;
5461
5462         if (ie_len > wiphy->max_sched_scan_ie_len)
5463                 return -EINVAL;
5464
5465         if (rdev->sched_scan_req) {
5466                 err = -EINPROGRESS;
5467                 goto out;
5468         }
5469
5470         request = kzalloc(sizeof(*request)
5471                         + sizeof(*request->ssids) * n_ssids
5472                         + sizeof(*request->match_sets) * n_match_sets
5473                         + sizeof(*request->channels) * n_channels
5474                         + ie_len, GFP_KERNEL);
5475         if (!request) {
5476                 err = -ENOMEM;
5477                 goto out;
5478         }
5479
5480         if (n_ssids)
5481                 request->ssids = (void *)&request->channels[n_channels];
5482         request->n_ssids = n_ssids;
5483         if (ie_len) {
5484                 if (request->ssids)
5485                         request->ie = (void *)(request->ssids + n_ssids);
5486                 else
5487                         request->ie = (void *)(request->channels + n_channels);
5488         }
5489
5490         if (n_match_sets) {
5491                 if (request->ie)
5492                         request->match_sets = (void *)(request->ie + ie_len);
5493                 else if (request->ssids)
5494                         request->match_sets =
5495                                 (void *)(request->ssids + n_ssids);
5496                 else
5497                         request->match_sets =
5498                                 (void *)(request->channels + n_channels);
5499         }
5500         request->n_match_sets = n_match_sets;
5501
5502         i = 0;
5503         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5504                 /* user specified, bail out if channel not found */
5505                 nla_for_each_nested(attr,
5506                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5507                                     tmp) {
5508                         struct ieee80211_channel *chan;
5509
5510                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5511
5512                         if (!chan) {
5513                                 err = -EINVAL;
5514                                 goto out_free;
5515                         }
5516
5517                         /* ignore disabled channels */
5518                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5519                                 continue;
5520
5521                         request->channels[i] = chan;
5522                         i++;
5523                 }
5524         } else {
5525                 /* all channels */
5526                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5527                         int j;
5528                         if (!wiphy->bands[band])
5529                                 continue;
5530                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5531                                 struct ieee80211_channel *chan;
5532
5533                                 chan = &wiphy->bands[band]->channels[j];
5534
5535                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5536                                         continue;
5537
5538                                 request->channels[i] = chan;
5539                                 i++;
5540                         }
5541                 }
5542         }
5543
5544         if (!i) {
5545                 err = -EINVAL;
5546                 goto out_free;
5547         }
5548
5549         request->n_channels = i;
5550
5551         i = 0;
5552         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5553                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5554                                     tmp) {
5555                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5556                                 err = -EINVAL;
5557                                 goto out_free;
5558                         }
5559                         request->ssids[i].ssid_len = nla_len(attr);
5560                         memcpy(request->ssids[i].ssid, nla_data(attr),
5561                                nla_len(attr));
5562                         i++;
5563                 }
5564         }
5565
5566         i = 0;
5567         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5568                 nla_for_each_nested(attr,
5569                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5570                                     tmp) {
5571                         struct nlattr *ssid, *rssi;
5572
5573                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5574                                   nla_data(attr), nla_len(attr),
5575                                   nl80211_match_policy);
5576                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5577                         if (ssid) {
5578                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5579                                         err = -EINVAL;
5580                                         goto out_free;
5581                                 }
5582                                 memcpy(request->match_sets[i].ssid.ssid,
5583                                        nla_data(ssid), nla_len(ssid));
5584                                 request->match_sets[i].ssid.ssid_len =
5585                                         nla_len(ssid);
5586                         }
5587                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5588                         if (rssi)
5589                                 request->rssi_thold = nla_get_u32(rssi);
5590                         else
5591                                 request->rssi_thold =
5592                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5593                         i++;
5594                 }
5595         }
5596
5597         if (info->attrs[NL80211_ATTR_IE]) {
5598                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5599                 memcpy((void *)request->ie,
5600                        nla_data(info->attrs[NL80211_ATTR_IE]),
5601                        request->ie_len);
5602         }
5603
5604         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5605                 request->flags = nla_get_u32(
5606                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5607                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5608                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5609                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5610                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5611                         err = -EOPNOTSUPP;
5612                         goto out_free;
5613                 }
5614         }
5615
5616         request->dev = dev;
5617         request->wiphy = &rdev->wiphy;
5618         request->interval = interval;
5619         request->scan_start = jiffies;
5620
5621         err = rdev_sched_scan_start(rdev, dev, request);
5622         if (!err) {
5623                 rdev->sched_scan_req = request;
5624                 nl80211_send_sched_scan(rdev, dev,
5625                                         NL80211_CMD_START_SCHED_SCAN);
5626                 goto out;
5627         }
5628
5629 out_free:
5630         kfree(request);
5631 out:
5632         return err;
5633 }
5634
5635 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5636                                    struct genl_info *info)
5637 {
5638         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5639
5640         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5641             !rdev->ops->sched_scan_stop)
5642                 return -EOPNOTSUPP;
5643
5644         return __cfg80211_stop_sched_scan(rdev, false);
5645 }
5646
5647 static int nl80211_start_radar_detection(struct sk_buff *skb,
5648                                          struct genl_info *info)
5649 {
5650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5651         struct net_device *dev = info->user_ptr[1];
5652         struct wireless_dev *wdev = dev->ieee80211_ptr;
5653         struct cfg80211_chan_def chandef;
5654         int err;
5655
5656         err = nl80211_parse_chandef(rdev, info, &chandef);
5657         if (err)
5658                 return err;
5659
5660         if (netif_carrier_ok(dev))
5661                 return -EBUSY;
5662
5663         if (wdev->cac_started)
5664                 return -EBUSY;
5665
5666         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5667         if (err < 0)
5668                 return err;
5669
5670         if (err == 0)
5671                 return -EINVAL;
5672
5673         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5674                 return -EINVAL;
5675
5676         if (!rdev->ops->start_radar_detection)
5677                 return -EOPNOTSUPP;
5678
5679         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5680                                            chandef.chan, CHAN_MODE_SHARED,
5681                                            BIT(chandef.width));
5682         if (err)
5683                 return err;
5684
5685         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5686         if (!err) {
5687                 wdev->channel = chandef.chan;
5688                 wdev->cac_started = true;
5689                 wdev->cac_start_time = jiffies;
5690         }
5691         return err;
5692 }
5693
5694 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5695 {
5696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5697         struct net_device *dev = info->user_ptr[1];
5698         struct wireless_dev *wdev = dev->ieee80211_ptr;
5699         struct cfg80211_csa_settings params;
5700         /* csa_attrs is defined static to avoid waste of stack size - this
5701          * function is called under RTNL lock, so this should not be a problem.
5702          */
5703         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5704         u8 radar_detect_width = 0;
5705         int err;
5706         bool need_new_beacon = false;
5707
5708         if (!rdev->ops->channel_switch ||
5709             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5710                 return -EOPNOTSUPP;
5711
5712         switch (dev->ieee80211_ptr->iftype) {
5713         case NL80211_IFTYPE_AP:
5714         case NL80211_IFTYPE_P2P_GO:
5715                 need_new_beacon = true;
5716
5717                 /* useless if AP is not running */
5718                 if (!wdev->beacon_interval)
5719                         return -EINVAL;
5720                 break;
5721         case NL80211_IFTYPE_ADHOC:
5722         case NL80211_IFTYPE_MESH_POINT:
5723                 break;
5724         default:
5725                 return -EOPNOTSUPP;
5726         }
5727
5728         memset(&params, 0, sizeof(params));
5729
5730         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5731             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5732                 return -EINVAL;
5733
5734         /* only important for AP, IBSS and mesh create IEs internally */
5735         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
5736                 return -EINVAL;
5737
5738         params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5739
5740         if (!need_new_beacon)
5741                 goto skip_beacons;
5742
5743         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5744         if (err)
5745                 return err;
5746
5747         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5748                                info->attrs[NL80211_ATTR_CSA_IES],
5749                                nl80211_policy);
5750         if (err)
5751                 return err;
5752
5753         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5754         if (err)
5755                 return err;
5756
5757         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5758                 return -EINVAL;
5759
5760         params.counter_offset_beacon =
5761                 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5762         if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5763                 return -EINVAL;
5764
5765         /* sanity check - counters should be the same */
5766         if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5767             params.count)
5768                 return -EINVAL;
5769
5770         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5771                 params.counter_offset_presp =
5772                         nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5773                 if (params.counter_offset_presp >=
5774                     params.beacon_csa.probe_resp_len)
5775                         return -EINVAL;
5776
5777                 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5778                     params.count)
5779                         return -EINVAL;
5780         }
5781
5782 skip_beacons:
5783         err = nl80211_parse_chandef(rdev, info, &params.chandef);
5784         if (err)
5785                 return err;
5786
5787         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5788                 return -EINVAL;
5789
5790         if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
5791             dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
5792             dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
5793                 err = cfg80211_chandef_dfs_required(wdev->wiphy,
5794                                                     &params.chandef);
5795                 if (err < 0) {
5796                         return err;
5797                 } else if (err) {
5798                         radar_detect_width = BIT(params.chandef.width);
5799                         params.radar_required = true;
5800                 }
5801         }
5802
5803         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5804                                            params.chandef.chan,
5805                                            CHAN_MODE_SHARED,
5806                                            radar_detect_width);
5807         if (err)
5808                 return err;
5809
5810         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5811                 params.block_tx = true;
5812
5813         return rdev_channel_switch(rdev, dev, &params);
5814 }
5815
5816 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5817                             u32 seq, int flags,
5818                             struct cfg80211_registered_device *rdev,
5819                             struct wireless_dev *wdev,
5820                             struct cfg80211_internal_bss *intbss)
5821 {
5822         struct cfg80211_bss *res = &intbss->pub;
5823         const struct cfg80211_bss_ies *ies;
5824         void *hdr;
5825         struct nlattr *bss;
5826         bool tsf = false;
5827
5828         ASSERT_WDEV_LOCK(wdev);
5829
5830         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5831                              NL80211_CMD_NEW_SCAN_RESULTS);
5832         if (!hdr)
5833                 return -1;
5834
5835         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5836
5837         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5838                 goto nla_put_failure;
5839         if (wdev->netdev &&
5840             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5841                 goto nla_put_failure;
5842         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5843                 goto nla_put_failure;
5844
5845         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5846         if (!bss)
5847                 goto nla_put_failure;
5848         if ((!is_zero_ether_addr(res->bssid) &&
5849              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5850                 goto nla_put_failure;
5851
5852         rcu_read_lock();
5853         ies = rcu_dereference(res->ies);
5854         if (ies) {
5855                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5856                         goto fail_unlock_rcu;
5857                 tsf = true;
5858                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5859                                         ies->len, ies->data))
5860                         goto fail_unlock_rcu;
5861         }
5862         ies = rcu_dereference(res->beacon_ies);
5863         if (ies) {
5864                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5865                         goto fail_unlock_rcu;
5866                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5867                                         ies->len, ies->data))
5868                         goto fail_unlock_rcu;
5869         }
5870         rcu_read_unlock();
5871
5872         if (res->beacon_interval &&
5873             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5874                 goto nla_put_failure;
5875         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5876             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5877             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5878             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5879                         jiffies_to_msecs(jiffies - intbss->ts)))
5880                 goto nla_put_failure;
5881
5882         switch (rdev->wiphy.signal_type) {
5883         case CFG80211_SIGNAL_TYPE_MBM:
5884                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5885                         goto nla_put_failure;
5886                 break;
5887         case CFG80211_SIGNAL_TYPE_UNSPEC:
5888                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5889                         goto nla_put_failure;
5890                 break;
5891         default:
5892                 break;
5893         }
5894
5895         switch (wdev->iftype) {
5896         case NL80211_IFTYPE_P2P_CLIENT:
5897         case NL80211_IFTYPE_STATION:
5898                 if (intbss == wdev->current_bss &&
5899                     nla_put_u32(msg, NL80211_BSS_STATUS,
5900                                 NL80211_BSS_STATUS_ASSOCIATED))
5901                         goto nla_put_failure;
5902                 break;
5903         case NL80211_IFTYPE_ADHOC:
5904                 if (intbss == wdev->current_bss &&
5905                     nla_put_u32(msg, NL80211_BSS_STATUS,
5906                                 NL80211_BSS_STATUS_IBSS_JOINED))
5907                         goto nla_put_failure;
5908                 break;
5909         default:
5910                 break;
5911         }
5912
5913         nla_nest_end(msg, bss);
5914
5915         return genlmsg_end(msg, hdr);
5916
5917  fail_unlock_rcu:
5918         rcu_read_unlock();
5919  nla_put_failure:
5920         genlmsg_cancel(msg, hdr);
5921         return -EMSGSIZE;
5922 }
5923
5924 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5925 {
5926         struct cfg80211_registered_device *rdev;
5927         struct cfg80211_internal_bss *scan;
5928         struct wireless_dev *wdev;
5929         int start = cb->args[2], idx = 0;
5930         int err;
5931
5932         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5933         if (err)
5934                 return err;
5935
5936         wdev_lock(wdev);
5937         spin_lock_bh(&rdev->bss_lock);
5938         cfg80211_bss_expire(rdev);
5939
5940         cb->seq = rdev->bss_generation;
5941
5942         list_for_each_entry(scan, &rdev->bss_list, list) {
5943                 if (++idx <= start)
5944                         continue;
5945                 if (nl80211_send_bss(skb, cb,
5946                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5947                                 rdev, wdev, scan) < 0) {
5948                         idx--;
5949                         break;
5950                 }
5951         }
5952
5953         spin_unlock_bh(&rdev->bss_lock);
5954         wdev_unlock(wdev);
5955
5956         cb->args[2] = idx;
5957         nl80211_finish_wdev_dump(rdev);
5958
5959         return skb->len;
5960 }
5961
5962 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5963                                 int flags, struct net_device *dev,
5964                                 struct survey_info *survey)
5965 {
5966         void *hdr;
5967         struct nlattr *infoattr;
5968
5969         hdr = nl80211hdr_put(msg, portid, seq, flags,
5970                              NL80211_CMD_NEW_SURVEY_RESULTS);
5971         if (!hdr)
5972                 return -ENOMEM;
5973
5974         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5975                 goto nla_put_failure;
5976
5977         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5978         if (!infoattr)
5979                 goto nla_put_failure;
5980
5981         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5982                         survey->channel->center_freq))
5983                 goto nla_put_failure;
5984
5985         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5986             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5987                 goto nla_put_failure;
5988         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5989             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5990                 goto nla_put_failure;
5991         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5992             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5993                         survey->channel_time))
5994                 goto nla_put_failure;
5995         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5996             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5997                         survey->channel_time_busy))
5998                 goto nla_put_failure;
5999         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6000             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6001                         survey->channel_time_ext_busy))
6002                 goto nla_put_failure;
6003         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6004             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6005                         survey->channel_time_rx))
6006                 goto nla_put_failure;
6007         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6008             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6009                         survey->channel_time_tx))
6010                 goto nla_put_failure;
6011
6012         nla_nest_end(msg, infoattr);
6013
6014         return genlmsg_end(msg, hdr);
6015
6016  nla_put_failure:
6017         genlmsg_cancel(msg, hdr);
6018         return -EMSGSIZE;
6019 }
6020
6021 static int nl80211_dump_survey(struct sk_buff *skb,
6022                         struct netlink_callback *cb)
6023 {
6024         struct survey_info survey;
6025         struct cfg80211_registered_device *dev;
6026         struct wireless_dev *wdev;
6027         int survey_idx = cb->args[2];
6028         int res;
6029
6030         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
6031         if (res)
6032                 return res;
6033
6034         if (!wdev->netdev) {
6035                 res = -EINVAL;
6036                 goto out_err;
6037         }
6038
6039         if (!dev->ops->dump_survey) {
6040                 res = -EOPNOTSUPP;
6041                 goto out_err;
6042         }
6043
6044         while (1) {
6045                 struct ieee80211_channel *chan;
6046
6047                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
6048                 if (res == -ENOENT)
6049                         break;
6050                 if (res)
6051                         goto out_err;
6052
6053                 /* Survey without a channel doesn't make sense */
6054                 if (!survey.channel) {
6055                         res = -EINVAL;
6056                         goto out;
6057                 }
6058
6059                 chan = ieee80211_get_channel(&dev->wiphy,
6060                                              survey.channel->center_freq);
6061                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6062                         survey_idx++;
6063                         continue;
6064                 }
6065
6066                 if (nl80211_send_survey(skb,
6067                                 NETLINK_CB(cb->skb).portid,
6068                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6069                                 wdev->netdev, &survey) < 0)
6070                         goto out;
6071                 survey_idx++;
6072         }
6073
6074  out:
6075         cb->args[2] = survey_idx;
6076         res = skb->len;
6077  out_err:
6078         nl80211_finish_wdev_dump(dev);
6079         return res;
6080 }
6081
6082 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6083 {
6084         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6085                                   NL80211_WPA_VERSION_2));
6086 }
6087
6088 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6089 {
6090         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6091         struct net_device *dev = info->user_ptr[1];
6092         struct ieee80211_channel *chan;
6093         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6094         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6095         enum nl80211_auth_type auth_type;
6096         struct key_parse key;
6097         bool local_state_change;
6098
6099         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6100                 return -EINVAL;
6101
6102         if (!info->attrs[NL80211_ATTR_MAC])
6103                 return -EINVAL;
6104
6105         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6106                 return -EINVAL;
6107
6108         if (!info->attrs[NL80211_ATTR_SSID])
6109                 return -EINVAL;
6110
6111         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6112                 return -EINVAL;
6113
6114         err = nl80211_parse_key(info, &key);
6115         if (err)
6116                 return err;
6117
6118         if (key.idx >= 0) {
6119                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6120                         return -EINVAL;
6121                 if (!key.p.key || !key.p.key_len)
6122                         return -EINVAL;
6123                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6124                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6125                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6126                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6127                         return -EINVAL;
6128                 if (key.idx > 4)
6129                         return -EINVAL;
6130         } else {
6131                 key.p.key_len = 0;
6132                 key.p.key = NULL;
6133         }
6134
6135         if (key.idx >= 0) {
6136                 int i;
6137                 bool ok = false;
6138                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6139                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6140                                 ok = true;
6141                                 break;
6142                         }
6143                 }
6144                 if (!ok)
6145                         return -EINVAL;
6146         }
6147
6148         if (!rdev->ops->auth)
6149                 return -EOPNOTSUPP;
6150
6151         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6152             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6153                 return -EOPNOTSUPP;
6154
6155         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6156         chan = ieee80211_get_channel(&rdev->wiphy,
6157                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6158         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6159                 return -EINVAL;
6160
6161         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6162         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6163
6164         if (info->attrs[NL80211_ATTR_IE]) {
6165                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6166                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6167         }
6168
6169         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6170         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6171                 return -EINVAL;
6172
6173         if (auth_type == NL80211_AUTHTYPE_SAE &&
6174             !info->attrs[NL80211_ATTR_SAE_DATA])
6175                 return -EINVAL;
6176
6177         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6178                 if (auth_type != NL80211_AUTHTYPE_SAE)
6179                         return -EINVAL;
6180                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6181                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6182                 /* need to include at least Auth Transaction and Status Code */
6183                 if (sae_data_len < 4)
6184                         return -EINVAL;
6185         }
6186
6187         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6188
6189         /*
6190          * Since we no longer track auth state, ignore
6191          * requests to only change local state.
6192          */
6193         if (local_state_change)
6194                 return 0;
6195
6196         wdev_lock(dev->ieee80211_ptr);
6197         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6198                                  ssid, ssid_len, ie, ie_len,
6199                                  key.p.key, key.p.key_len, key.idx,
6200                                  sae_data, sae_data_len);
6201         wdev_unlock(dev->ieee80211_ptr);
6202         return err;
6203 }
6204
6205 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6206                                    struct genl_info *info,
6207                                    struct cfg80211_crypto_settings *settings,
6208                                    int cipher_limit)
6209 {
6210         memset(settings, 0, sizeof(*settings));
6211
6212         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6213
6214         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6215                 u16 proto;
6216                 proto = nla_get_u16(
6217                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6218                 settings->control_port_ethertype = cpu_to_be16(proto);
6219                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6220                     proto != ETH_P_PAE)
6221                         return -EINVAL;
6222                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6223                         settings->control_port_no_encrypt = true;
6224         } else
6225                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6226
6227         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6228                 void *data;
6229                 int len, i;
6230
6231                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6232                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6233                 settings->n_ciphers_pairwise = len / sizeof(u32);
6234
6235                 if (len % sizeof(u32))
6236                         return -EINVAL;
6237
6238                 if (settings->n_ciphers_pairwise > cipher_limit)
6239                         return -EINVAL;
6240
6241                 memcpy(settings->ciphers_pairwise, data, len);
6242
6243                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6244                         if (!cfg80211_supported_cipher_suite(
6245                                         &rdev->wiphy,
6246                                         settings->ciphers_pairwise[i]))
6247                                 return -EINVAL;
6248         }
6249
6250         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6251                 settings->cipher_group =
6252                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6253                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6254                                                      settings->cipher_group))
6255                         return -EINVAL;
6256         }
6257
6258         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6259                 settings->wpa_versions =
6260                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6261                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6262                         return -EINVAL;
6263         }
6264
6265         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6266                 void *data;
6267                 int len;
6268
6269                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6270                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6271                 settings->n_akm_suites = len / sizeof(u32);
6272
6273                 if (len % sizeof(u32))
6274                         return -EINVAL;
6275
6276                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6277                         return -EINVAL;
6278
6279                 memcpy(settings->akm_suites, data, len);
6280         }
6281
6282         return 0;
6283 }
6284
6285 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6286 {
6287         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6288         struct net_device *dev = info->user_ptr[1];
6289         struct ieee80211_channel *chan;
6290         struct cfg80211_assoc_request req = {};
6291         const u8 *bssid, *ssid;
6292         int err, ssid_len = 0;
6293
6294         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6295                 return -EINVAL;
6296
6297         if (!info->attrs[NL80211_ATTR_MAC] ||
6298             !info->attrs[NL80211_ATTR_SSID] ||
6299             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6300                 return -EINVAL;
6301
6302         if (!rdev->ops->assoc)
6303                 return -EOPNOTSUPP;
6304
6305         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6306             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6307                 return -EOPNOTSUPP;
6308
6309         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6310
6311         chan = ieee80211_get_channel(&rdev->wiphy,
6312                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6313         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6314                 return -EINVAL;
6315
6316         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6317         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6318
6319         if (info->attrs[NL80211_ATTR_IE]) {
6320                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6321                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6322         }
6323
6324         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6325                 enum nl80211_mfp mfp =
6326                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6327                 if (mfp == NL80211_MFP_REQUIRED)
6328                         req.use_mfp = true;
6329                 else if (mfp != NL80211_MFP_NO)
6330                         return -EINVAL;
6331         }
6332
6333         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6334                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6335
6336         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6337                 req.flags |= ASSOC_REQ_DISABLE_HT;
6338
6339         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6340                 memcpy(&req.ht_capa_mask,
6341                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6342                        sizeof(req.ht_capa_mask));
6343
6344         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6345                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6346                         return -EINVAL;
6347                 memcpy(&req.ht_capa,
6348                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6349                        sizeof(req.ht_capa));
6350         }
6351
6352         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6353                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6354
6355         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6356                 memcpy(&req.vht_capa_mask,
6357                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6358                        sizeof(req.vht_capa_mask));
6359
6360         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6361                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6362                         return -EINVAL;
6363                 memcpy(&req.vht_capa,
6364                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6365                        sizeof(req.vht_capa));
6366         }
6367
6368         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6369         if (!err) {
6370                 wdev_lock(dev->ieee80211_ptr);
6371                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6372                                           ssid, ssid_len, &req);
6373                 wdev_unlock(dev->ieee80211_ptr);
6374         }
6375
6376         return err;
6377 }
6378
6379 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6380 {
6381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6382         struct net_device *dev = info->user_ptr[1];
6383         const u8 *ie = NULL, *bssid;
6384         int ie_len = 0, err;
6385         u16 reason_code;
6386         bool local_state_change;
6387
6388         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6389                 return -EINVAL;
6390
6391         if (!info->attrs[NL80211_ATTR_MAC])
6392                 return -EINVAL;
6393
6394         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6395                 return -EINVAL;
6396
6397         if (!rdev->ops->deauth)
6398                 return -EOPNOTSUPP;
6399
6400         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6401             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6402                 return -EOPNOTSUPP;
6403
6404         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6405
6406         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6407         if (reason_code == 0) {
6408                 /* Reason Code 0 is reserved */
6409                 return -EINVAL;
6410         }
6411
6412         if (info->attrs[NL80211_ATTR_IE]) {
6413                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6414                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6415         }
6416
6417         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6418
6419         wdev_lock(dev->ieee80211_ptr);
6420         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6421                                    local_state_change);
6422         wdev_unlock(dev->ieee80211_ptr);
6423         return err;
6424 }
6425
6426 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6427 {
6428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6429         struct net_device *dev = info->user_ptr[1];
6430         const u8 *ie = NULL, *bssid;
6431         int ie_len = 0, err;
6432         u16 reason_code;
6433         bool local_state_change;
6434
6435         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6436                 return -EINVAL;
6437
6438         if (!info->attrs[NL80211_ATTR_MAC])
6439                 return -EINVAL;
6440
6441         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6442                 return -EINVAL;
6443
6444         if (!rdev->ops->disassoc)
6445                 return -EOPNOTSUPP;
6446
6447         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6448             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6449                 return -EOPNOTSUPP;
6450
6451         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6452
6453         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6454         if (reason_code == 0) {
6455                 /* Reason Code 0 is reserved */
6456                 return -EINVAL;
6457         }
6458
6459         if (info->attrs[NL80211_ATTR_IE]) {
6460                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6461                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6462         }
6463
6464         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6465
6466         wdev_lock(dev->ieee80211_ptr);
6467         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6468                                      local_state_change);
6469         wdev_unlock(dev->ieee80211_ptr);
6470         return err;
6471 }
6472
6473 static bool
6474 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6475                          int mcast_rate[IEEE80211_NUM_BANDS],
6476                          int rateval)
6477 {
6478         struct wiphy *wiphy = &rdev->wiphy;
6479         bool found = false;
6480         int band, i;
6481
6482         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6483                 struct ieee80211_supported_band *sband;
6484
6485                 sband = wiphy->bands[band];
6486                 if (!sband)
6487                         continue;
6488
6489                 for (i = 0; i < sband->n_bitrates; i++) {
6490                         if (sband->bitrates[i].bitrate == rateval) {
6491                                 mcast_rate[band] = i + 1;
6492                                 found = true;
6493                                 break;
6494                         }
6495                 }
6496         }
6497
6498         return found;
6499 }
6500
6501 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6502 {
6503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6504         struct net_device *dev = info->user_ptr[1];
6505         struct cfg80211_ibss_params ibss;
6506         struct wiphy *wiphy;
6507         struct cfg80211_cached_keys *connkeys = NULL;
6508         int err;
6509
6510         memset(&ibss, 0, sizeof(ibss));
6511
6512         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6513                 return -EINVAL;
6514
6515         if (!info->attrs[NL80211_ATTR_SSID] ||
6516             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6517                 return -EINVAL;
6518
6519         ibss.beacon_interval = 100;
6520
6521         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6522                 ibss.beacon_interval =
6523                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6524                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6525                         return -EINVAL;
6526         }
6527
6528         if (!rdev->ops->join_ibss)
6529                 return -EOPNOTSUPP;
6530
6531         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6532                 return -EOPNOTSUPP;
6533
6534         wiphy = &rdev->wiphy;
6535
6536         if (info->attrs[NL80211_ATTR_MAC]) {
6537                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6538
6539                 if (!is_valid_ether_addr(ibss.bssid))
6540                         return -EINVAL;
6541         }
6542         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6543         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6544
6545         if (info->attrs[NL80211_ATTR_IE]) {
6546                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6547                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6548         }
6549
6550         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6551         if (err)
6552                 return err;
6553
6554         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6555                 return -EINVAL;
6556
6557         switch (ibss.chandef.width) {
6558         case NL80211_CHAN_WIDTH_5:
6559         case NL80211_CHAN_WIDTH_10:
6560         case NL80211_CHAN_WIDTH_20_NOHT:
6561                 break;
6562         case NL80211_CHAN_WIDTH_20:
6563         case NL80211_CHAN_WIDTH_40:
6564                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6565                         break;
6566         default:
6567                 return -EINVAL;
6568         }
6569
6570         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6571         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6572
6573         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6574                 u8 *rates =
6575                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6576                 int n_rates =
6577                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6578                 struct ieee80211_supported_band *sband =
6579                         wiphy->bands[ibss.chandef.chan->band];
6580
6581                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6582                                              &ibss.basic_rates);
6583                 if (err)
6584                         return err;
6585         }
6586
6587         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6588                 memcpy(&ibss.ht_capa_mask,
6589                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6590                        sizeof(ibss.ht_capa_mask));
6591
6592         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6593                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6594                         return -EINVAL;
6595                 memcpy(&ibss.ht_capa,
6596                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6597                        sizeof(ibss.ht_capa));
6598         }
6599
6600         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6601             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6602                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6603                 return -EINVAL;
6604
6605         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6606                 bool no_ht = false;
6607
6608                 connkeys = nl80211_parse_connkeys(rdev,
6609                                           info->attrs[NL80211_ATTR_KEYS],
6610                                           &no_ht);
6611                 if (IS_ERR(connkeys))
6612                         return PTR_ERR(connkeys);
6613
6614                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6615                     no_ht) {
6616                         kfree(connkeys);
6617                         return -EINVAL;
6618                 }
6619         }
6620
6621         ibss.control_port =
6622                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6623
6624         ibss.userspace_handles_dfs =
6625                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
6626
6627         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6628         if (err)
6629                 kfree(connkeys);
6630         return err;
6631 }
6632
6633 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6634 {
6635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6636         struct net_device *dev = info->user_ptr[1];
6637
6638         if (!rdev->ops->leave_ibss)
6639                 return -EOPNOTSUPP;
6640
6641         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6642                 return -EOPNOTSUPP;
6643
6644         return cfg80211_leave_ibss(rdev, dev, false);
6645 }
6646
6647 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6648 {
6649         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6650         struct net_device *dev = info->user_ptr[1];
6651         int mcast_rate[IEEE80211_NUM_BANDS];
6652         u32 nla_rate;
6653         int err;
6654
6655         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6656             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6657                 return -EOPNOTSUPP;
6658
6659         if (!rdev->ops->set_mcast_rate)
6660                 return -EOPNOTSUPP;
6661
6662         memset(mcast_rate, 0, sizeof(mcast_rate));
6663
6664         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6665                 return -EINVAL;
6666
6667         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6668         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6669                 return -EINVAL;
6670
6671         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6672
6673         return err;
6674 }
6675
6676
6677 #ifdef CONFIG_NL80211_TESTMODE
6678 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6679 {
6680         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6681         struct wireless_dev *wdev =
6682                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
6683         int err;
6684
6685         if (!rdev->ops->testmode_cmd)
6686                 return -EOPNOTSUPP;
6687
6688         if (IS_ERR(wdev)) {
6689                 err = PTR_ERR(wdev);
6690                 if (err != -EINVAL)
6691                         return err;
6692                 wdev = NULL;
6693         } else if (wdev->wiphy != &rdev->wiphy) {
6694                 return -EINVAL;
6695         }
6696
6697         if (!info->attrs[NL80211_ATTR_TESTDATA])
6698                 return -EINVAL;
6699
6700         rdev->testmode_info = info;
6701         err = rdev_testmode_cmd(rdev, wdev,
6702                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6703                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6704         rdev->testmode_info = NULL;
6705
6706         return err;
6707 }
6708
6709 static int nl80211_testmode_dump(struct sk_buff *skb,
6710                                  struct netlink_callback *cb)
6711 {
6712         struct cfg80211_registered_device *rdev;
6713         int err;
6714         long phy_idx;
6715         void *data = NULL;
6716         int data_len = 0;
6717
6718         rtnl_lock();
6719
6720         if (cb->args[0]) {
6721                 /*
6722                  * 0 is a valid index, but not valid for args[0],
6723                  * so we need to offset by 1.
6724                  */
6725                 phy_idx = cb->args[0] - 1;
6726         } else {
6727                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6728                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6729                                   nl80211_policy);
6730                 if (err)
6731                         goto out_err;
6732
6733                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6734                                                   nl80211_fam.attrbuf);
6735                 if (IS_ERR(rdev)) {
6736                         err = PTR_ERR(rdev);
6737                         goto out_err;
6738                 }
6739                 phy_idx = rdev->wiphy_idx;
6740                 rdev = NULL;
6741
6742                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6743                         cb->args[1] =
6744                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6745         }
6746
6747         if (cb->args[1]) {
6748                 data = nla_data((void *)cb->args[1]);
6749                 data_len = nla_len((void *)cb->args[1]);
6750         }
6751
6752         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6753         if (!rdev) {
6754                 err = -ENOENT;
6755                 goto out_err;
6756         }
6757
6758         if (!rdev->ops->testmode_dump) {
6759                 err = -EOPNOTSUPP;
6760                 goto out_err;
6761         }
6762
6763         while (1) {
6764                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6765                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6766                                            NL80211_CMD_TESTMODE);
6767                 struct nlattr *tmdata;
6768
6769                 if (!hdr)
6770                         break;
6771
6772                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6773                         genlmsg_cancel(skb, hdr);
6774                         break;
6775                 }
6776
6777                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6778                 if (!tmdata) {
6779                         genlmsg_cancel(skb, hdr);
6780                         break;
6781                 }
6782                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6783                 nla_nest_end(skb, tmdata);
6784
6785                 if (err == -ENOBUFS || err == -ENOENT) {
6786                         genlmsg_cancel(skb, hdr);
6787                         break;
6788                 } else if (err) {
6789                         genlmsg_cancel(skb, hdr);
6790                         goto out_err;
6791                 }
6792
6793                 genlmsg_end(skb, hdr);
6794         }
6795
6796         err = skb->len;
6797         /* see above */
6798         cb->args[0] = phy_idx + 1;
6799  out_err:
6800         rtnl_unlock();
6801         return err;
6802 }
6803
6804 static struct sk_buff *
6805 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6806                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6807 {
6808         struct sk_buff *skb;
6809         void *hdr;
6810         struct nlattr *data;
6811
6812         skb = nlmsg_new(approxlen + 100, gfp);
6813         if (!skb)
6814                 return NULL;
6815
6816         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6817         if (!hdr) {
6818                 kfree_skb(skb);
6819                 return NULL;
6820         }
6821
6822         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6823                 goto nla_put_failure;
6824         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6825
6826         ((void **)skb->cb)[0] = rdev;
6827         ((void **)skb->cb)[1] = hdr;
6828         ((void **)skb->cb)[2] = data;
6829
6830         return skb;
6831
6832  nla_put_failure:
6833         kfree_skb(skb);
6834         return NULL;
6835 }
6836
6837 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6838                                                   int approxlen)
6839 {
6840         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6841
6842         if (WARN_ON(!rdev->testmode_info))
6843                 return NULL;
6844
6845         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6846                                 rdev->testmode_info->snd_portid,
6847                                 rdev->testmode_info->snd_seq,
6848                                 GFP_KERNEL);
6849 }
6850 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6851
6852 int cfg80211_testmode_reply(struct sk_buff *skb)
6853 {
6854         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6855         void *hdr = ((void **)skb->cb)[1];
6856         struct nlattr *data = ((void **)skb->cb)[2];
6857
6858         if (WARN_ON(!rdev->testmode_info)) {
6859                 kfree_skb(skb);
6860                 return -EINVAL;
6861         }
6862
6863         nla_nest_end(skb, data);
6864         genlmsg_end(skb, hdr);
6865         return genlmsg_reply(skb, rdev->testmode_info);
6866 }
6867 EXPORT_SYMBOL(cfg80211_testmode_reply);
6868
6869 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6870                                                   int approxlen, gfp_t gfp)
6871 {
6872         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6873
6874         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6875 }
6876 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6877
6878 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6879 {
6880         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6881         void *hdr = ((void **)skb->cb)[1];
6882         struct nlattr *data = ((void **)skb->cb)[2];
6883
6884         nla_nest_end(skb, data);
6885         genlmsg_end(skb, hdr);
6886         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
6887                                 NL80211_MCGRP_TESTMODE, gfp);
6888 }
6889 EXPORT_SYMBOL(cfg80211_testmode_event);
6890 #endif
6891
6892 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6893 {
6894         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6895         struct net_device *dev = info->user_ptr[1];
6896         struct cfg80211_connect_params connect;
6897         struct wiphy *wiphy;
6898         struct cfg80211_cached_keys *connkeys = NULL;
6899         int err;
6900
6901         memset(&connect, 0, sizeof(connect));
6902
6903         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6904                 return -EINVAL;
6905
6906         if (!info->attrs[NL80211_ATTR_SSID] ||
6907             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6908                 return -EINVAL;
6909
6910         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6911                 connect.auth_type =
6912                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6913                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6914                                              NL80211_CMD_CONNECT))
6915                         return -EINVAL;
6916         } else
6917                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6918
6919         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6920
6921         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6922                                       NL80211_MAX_NR_CIPHER_SUITES);
6923         if (err)
6924                 return err;
6925
6926         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6927             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6928                 return -EOPNOTSUPP;
6929
6930         wiphy = &rdev->wiphy;
6931
6932         connect.bg_scan_period = -1;
6933         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6934                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6935                 connect.bg_scan_period =
6936                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6937         }
6938
6939         if (info->attrs[NL80211_ATTR_MAC])
6940                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6941         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6942         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6943
6944         if (info->attrs[NL80211_ATTR_IE]) {
6945                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6946                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6947         }
6948
6949         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6950                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6951                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6952                     connect.mfp != NL80211_MFP_NO)
6953                         return -EINVAL;
6954         } else {
6955                 connect.mfp = NL80211_MFP_NO;
6956         }
6957
6958         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6959                 connect.channel =
6960                         ieee80211_get_channel(wiphy,
6961                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6962                 if (!connect.channel ||
6963                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6964                         return -EINVAL;
6965         }
6966
6967         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6968                 connkeys = nl80211_parse_connkeys(rdev,
6969                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6970                 if (IS_ERR(connkeys))
6971                         return PTR_ERR(connkeys);
6972         }
6973
6974         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6975                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6976
6977         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6978                 memcpy(&connect.ht_capa_mask,
6979                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6980                        sizeof(connect.ht_capa_mask));
6981
6982         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6983                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6984                         kfree(connkeys);
6985                         return -EINVAL;
6986                 }
6987                 memcpy(&connect.ht_capa,
6988                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6989                        sizeof(connect.ht_capa));
6990         }
6991
6992         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6993                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6994
6995         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6996                 memcpy(&connect.vht_capa_mask,
6997                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6998                        sizeof(connect.vht_capa_mask));
6999
7000         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7001                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7002                         kfree(connkeys);
7003                         return -EINVAL;
7004                 }
7005                 memcpy(&connect.vht_capa,
7006                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7007                        sizeof(connect.vht_capa));
7008         }
7009
7010         wdev_lock(dev->ieee80211_ptr);
7011         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7012         wdev_unlock(dev->ieee80211_ptr);
7013         if (err)
7014                 kfree(connkeys);
7015         return err;
7016 }
7017
7018 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7019 {
7020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7021         struct net_device *dev = info->user_ptr[1];
7022         u16 reason;
7023         int ret;
7024
7025         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7026                 reason = WLAN_REASON_DEAUTH_LEAVING;
7027         else
7028                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7029
7030         if (reason == 0)
7031                 return -EINVAL;
7032
7033         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7034             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7035                 return -EOPNOTSUPP;
7036
7037         wdev_lock(dev->ieee80211_ptr);
7038         ret = cfg80211_disconnect(rdev, dev, reason, true);
7039         wdev_unlock(dev->ieee80211_ptr);
7040         return ret;
7041 }
7042
7043 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7044 {
7045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7046         struct net *net;
7047         int err;
7048         u32 pid;
7049
7050         if (!info->attrs[NL80211_ATTR_PID])
7051                 return -EINVAL;
7052
7053         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7054
7055         net = get_net_ns_by_pid(pid);
7056         if (IS_ERR(net))
7057                 return PTR_ERR(net);
7058
7059         err = 0;
7060
7061         /* check if anything to do */
7062         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7063                 err = cfg80211_switch_netns(rdev, net);
7064
7065         put_net(net);
7066         return err;
7067 }
7068
7069 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7070 {
7071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7072         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7073                         struct cfg80211_pmksa *pmksa) = NULL;
7074         struct net_device *dev = info->user_ptr[1];
7075         struct cfg80211_pmksa pmksa;
7076
7077         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7078
7079         if (!info->attrs[NL80211_ATTR_MAC])
7080                 return -EINVAL;
7081
7082         if (!info->attrs[NL80211_ATTR_PMKID])
7083                 return -EINVAL;
7084
7085         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7086         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7087
7088         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7089             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7090                 return -EOPNOTSUPP;
7091
7092         switch (info->genlhdr->cmd) {
7093         case NL80211_CMD_SET_PMKSA:
7094                 rdev_ops = rdev->ops->set_pmksa;
7095                 break;
7096         case NL80211_CMD_DEL_PMKSA:
7097                 rdev_ops = rdev->ops->del_pmksa;
7098                 break;
7099         default:
7100                 WARN_ON(1);
7101                 break;
7102         }
7103
7104         if (!rdev_ops)
7105                 return -EOPNOTSUPP;
7106
7107         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7108 }
7109
7110 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7111 {
7112         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7113         struct net_device *dev = info->user_ptr[1];
7114
7115         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7116             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7117                 return -EOPNOTSUPP;
7118
7119         if (!rdev->ops->flush_pmksa)
7120                 return -EOPNOTSUPP;
7121
7122         return rdev_flush_pmksa(rdev, dev);
7123 }
7124
7125 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7126 {
7127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7128         struct net_device *dev = info->user_ptr[1];
7129         u8 action_code, dialog_token;
7130         u16 status_code;
7131         u8 *peer;
7132
7133         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7134             !rdev->ops->tdls_mgmt)
7135                 return -EOPNOTSUPP;
7136
7137         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7138             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7139             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7140             !info->attrs[NL80211_ATTR_IE] ||
7141             !info->attrs[NL80211_ATTR_MAC])
7142                 return -EINVAL;
7143
7144         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7145         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7146         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7147         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7148
7149         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7150                               dialog_token, status_code,
7151                               nla_data(info->attrs[NL80211_ATTR_IE]),
7152                               nla_len(info->attrs[NL80211_ATTR_IE]));
7153 }
7154
7155 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7156 {
7157         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7158         struct net_device *dev = info->user_ptr[1];
7159         enum nl80211_tdls_operation operation;
7160         u8 *peer;
7161
7162         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7163             !rdev->ops->tdls_oper)
7164                 return -EOPNOTSUPP;
7165
7166         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7167             !info->attrs[NL80211_ATTR_MAC])
7168                 return -EINVAL;
7169
7170         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7171         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7172
7173         return rdev_tdls_oper(rdev, dev, peer, operation);
7174 }
7175
7176 static int nl80211_remain_on_channel(struct sk_buff *skb,
7177                                      struct genl_info *info)
7178 {
7179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7180         struct wireless_dev *wdev = info->user_ptr[1];
7181         struct cfg80211_chan_def chandef;
7182         struct sk_buff *msg;
7183         void *hdr;
7184         u64 cookie;
7185         u32 duration;
7186         int err;
7187
7188         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7189             !info->attrs[NL80211_ATTR_DURATION])
7190                 return -EINVAL;
7191
7192         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7193
7194         if (!rdev->ops->remain_on_channel ||
7195             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7196                 return -EOPNOTSUPP;
7197
7198         /*
7199          * We should be on that channel for at least a minimum amount of
7200          * time (10ms) but no longer than the driver supports.
7201          */
7202         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7203             duration > rdev->wiphy.max_remain_on_channel_duration)
7204                 return -EINVAL;
7205
7206         err = nl80211_parse_chandef(rdev, info, &chandef);
7207         if (err)
7208                 return err;
7209
7210         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7211         if (!msg)
7212                 return -ENOMEM;
7213
7214         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7215                              NL80211_CMD_REMAIN_ON_CHANNEL);
7216         if (!hdr) {
7217                 err = -ENOBUFS;
7218                 goto free_msg;
7219         }
7220
7221         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7222                                      duration, &cookie);
7223
7224         if (err)
7225                 goto free_msg;
7226
7227         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7228                 goto nla_put_failure;
7229
7230         genlmsg_end(msg, hdr);
7231
7232         return genlmsg_reply(msg, info);
7233
7234  nla_put_failure:
7235         err = -ENOBUFS;
7236  free_msg:
7237         nlmsg_free(msg);
7238         return err;
7239 }
7240
7241 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7242                                             struct genl_info *info)
7243 {
7244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7245         struct wireless_dev *wdev = info->user_ptr[1];
7246         u64 cookie;
7247
7248         if (!info->attrs[NL80211_ATTR_COOKIE])
7249                 return -EINVAL;
7250
7251         if (!rdev->ops->cancel_remain_on_channel)
7252                 return -EOPNOTSUPP;
7253
7254         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7255
7256         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7257 }
7258
7259 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7260                            u8 *rates, u8 rates_len)
7261 {
7262         u8 i;
7263         u32 mask = 0;
7264
7265         for (i = 0; i < rates_len; i++) {
7266                 int rate = (rates[i] & 0x7f) * 5;
7267                 int ridx;
7268                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7269                         struct ieee80211_rate *srate =
7270                                 &sband->bitrates[ridx];
7271                         if (rate == srate->bitrate) {
7272                                 mask |= 1 << ridx;
7273                                 break;
7274                         }
7275                 }
7276                 if (ridx == sband->n_bitrates)
7277                         return 0; /* rate not found */
7278         }
7279
7280         return mask;
7281 }
7282
7283 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7284                                u8 *rates, u8 rates_len,
7285                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7286 {
7287         u8 i;
7288
7289         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7290
7291         for (i = 0; i < rates_len; i++) {
7292                 int ridx, rbit;
7293
7294                 ridx = rates[i] / 8;
7295                 rbit = BIT(rates[i] % 8);
7296
7297                 /* check validity */
7298                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7299                         return false;
7300
7301                 /* check availability */
7302                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7303                         mcs[ridx] |= rbit;
7304                 else
7305                         return false;
7306         }
7307
7308         return true;
7309 }
7310
7311 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7312         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7313                                     .len = NL80211_MAX_SUPP_RATES },
7314         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7315                                  .len = NL80211_MAX_SUPP_HT_RATES },
7316 };
7317
7318 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7319                                        struct genl_info *info)
7320 {
7321         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7322         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7323         struct cfg80211_bitrate_mask mask;
7324         int rem, i;
7325         struct net_device *dev = info->user_ptr[1];
7326         struct nlattr *tx_rates;
7327         struct ieee80211_supported_band *sband;
7328
7329         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7330                 return -EINVAL;
7331
7332         if (!rdev->ops->set_bitrate_mask)
7333                 return -EOPNOTSUPP;
7334
7335         memset(&mask, 0, sizeof(mask));
7336         /* Default to all rates enabled */
7337         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7338                 sband = rdev->wiphy.bands[i];
7339                 mask.control[i].legacy =
7340                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7341                 if (sband)
7342                         memcpy(mask.control[i].mcs,
7343                                sband->ht_cap.mcs.rx_mask,
7344                                sizeof(mask.control[i].mcs));
7345                 else
7346                         memset(mask.control[i].mcs, 0,
7347                                sizeof(mask.control[i].mcs));
7348         }
7349
7350         /*
7351          * The nested attribute uses enum nl80211_band as the index. This maps
7352          * directly to the enum ieee80211_band values used in cfg80211.
7353          */
7354         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7355         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7356         {
7357                 enum ieee80211_band band = nla_type(tx_rates);
7358                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7359                         return -EINVAL;
7360                 sband = rdev->wiphy.bands[band];
7361                 if (sband == NULL)
7362                         return -EINVAL;
7363                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7364                           nla_len(tx_rates), nl80211_txattr_policy);
7365                 if (tb[NL80211_TXRATE_LEGACY]) {
7366                         mask.control[band].legacy = rateset_to_mask(
7367                                 sband,
7368                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7369                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7370                         if ((mask.control[band].legacy == 0) &&
7371                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7372                                 return -EINVAL;
7373                 }
7374                 if (tb[NL80211_TXRATE_MCS]) {
7375                         if (!ht_rateset_to_mask(
7376                                         sband,
7377                                         nla_data(tb[NL80211_TXRATE_MCS]),
7378                                         nla_len(tb[NL80211_TXRATE_MCS]),
7379                                         mask.control[band].mcs))
7380                                 return -EINVAL;
7381                 }
7382
7383                 if (mask.control[band].legacy == 0) {
7384                         /* don't allow empty legacy rates if HT
7385                          * is not even supported. */
7386                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7387                                 return -EINVAL;
7388
7389                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7390                                 if (mask.control[band].mcs[i])
7391                                         break;
7392
7393                         /* legacy and mcs rates may not be both empty */
7394                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7395                                 return -EINVAL;
7396                 }
7397         }
7398
7399         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7400 }
7401
7402 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7403 {
7404         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7405         struct wireless_dev *wdev = info->user_ptr[1];
7406         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7407
7408         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7409                 return -EINVAL;
7410
7411         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7412                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7413
7414         switch (wdev->iftype) {
7415         case NL80211_IFTYPE_STATION:
7416         case NL80211_IFTYPE_ADHOC:
7417         case NL80211_IFTYPE_P2P_CLIENT:
7418         case NL80211_IFTYPE_AP:
7419         case NL80211_IFTYPE_AP_VLAN:
7420         case NL80211_IFTYPE_MESH_POINT:
7421         case NL80211_IFTYPE_P2P_GO:
7422         case NL80211_IFTYPE_P2P_DEVICE:
7423                 break;
7424         default:
7425                 return -EOPNOTSUPP;
7426         }
7427
7428         /* not much point in registering if we can't reply */
7429         if (!rdev->ops->mgmt_tx)
7430                 return -EOPNOTSUPP;
7431
7432         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7433                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7434                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7435 }
7436
7437 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7438 {
7439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7440         struct wireless_dev *wdev = info->user_ptr[1];
7441         struct cfg80211_chan_def chandef;
7442         int err;
7443         void *hdr = NULL;
7444         u64 cookie;
7445         struct sk_buff *msg = NULL;
7446         unsigned int wait = 0;
7447         bool offchan, no_cck, dont_wait_for_ack;
7448
7449         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7450
7451         if (!info->attrs[NL80211_ATTR_FRAME])
7452                 return -EINVAL;
7453
7454         if (!rdev->ops->mgmt_tx)
7455                 return -EOPNOTSUPP;
7456
7457         switch (wdev->iftype) {
7458         case NL80211_IFTYPE_P2P_DEVICE:
7459                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7460                         return -EINVAL;
7461         case NL80211_IFTYPE_STATION:
7462         case NL80211_IFTYPE_ADHOC:
7463         case NL80211_IFTYPE_P2P_CLIENT:
7464         case NL80211_IFTYPE_AP:
7465         case NL80211_IFTYPE_AP_VLAN:
7466         case NL80211_IFTYPE_MESH_POINT:
7467         case NL80211_IFTYPE_P2P_GO:
7468                 break;
7469         default:
7470                 return -EOPNOTSUPP;
7471         }
7472
7473         if (info->attrs[NL80211_ATTR_DURATION]) {
7474                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7475                         return -EINVAL;
7476                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7477
7478                 /*
7479                  * We should wait on the channel for at least a minimum amount
7480                  * of time (10ms) but no longer than the driver supports.
7481                  */
7482                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7483                     wait > rdev->wiphy.max_remain_on_channel_duration)
7484                         return -EINVAL;
7485
7486         }
7487
7488         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7489
7490         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7491                 return -EINVAL;
7492
7493         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7494
7495         /* get the channel if any has been specified, otherwise pass NULL to
7496          * the driver. The latter will use the current one
7497          */
7498         chandef.chan = NULL;
7499         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7500                 err = nl80211_parse_chandef(rdev, info, &chandef);
7501                 if (err)
7502                         return err;
7503         }
7504
7505         if (!chandef.chan && offchan)
7506                 return -EINVAL;
7507
7508         if (!dont_wait_for_ack) {
7509                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7510                 if (!msg)
7511                         return -ENOMEM;
7512
7513                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7514                                      NL80211_CMD_FRAME);
7515                 if (!hdr) {
7516                         err = -ENOBUFS;
7517                         goto free_msg;
7518                 }
7519         }
7520
7521         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7522                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7523                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7524                                     no_cck, dont_wait_for_ack, &cookie);
7525         if (err)
7526                 goto free_msg;
7527
7528         if (msg) {
7529                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7530                         goto nla_put_failure;
7531
7532                 genlmsg_end(msg, hdr);
7533                 return genlmsg_reply(msg, info);
7534         }
7535
7536         return 0;
7537
7538  nla_put_failure:
7539         err = -ENOBUFS;
7540  free_msg:
7541         nlmsg_free(msg);
7542         return err;
7543 }
7544
7545 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7546 {
7547         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7548         struct wireless_dev *wdev = info->user_ptr[1];
7549         u64 cookie;
7550
7551         if (!info->attrs[NL80211_ATTR_COOKIE])
7552                 return -EINVAL;
7553
7554         if (!rdev->ops->mgmt_tx_cancel_wait)
7555                 return -EOPNOTSUPP;
7556
7557         switch (wdev->iftype) {
7558         case NL80211_IFTYPE_STATION:
7559         case NL80211_IFTYPE_ADHOC:
7560         case NL80211_IFTYPE_P2P_CLIENT:
7561         case NL80211_IFTYPE_AP:
7562         case NL80211_IFTYPE_AP_VLAN:
7563         case NL80211_IFTYPE_P2P_GO:
7564         case NL80211_IFTYPE_P2P_DEVICE:
7565                 break;
7566         default:
7567                 return -EOPNOTSUPP;
7568         }
7569
7570         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7571
7572         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7573 }
7574
7575 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7576 {
7577         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7578         struct wireless_dev *wdev;
7579         struct net_device *dev = info->user_ptr[1];
7580         u8 ps_state;
7581         bool state;
7582         int err;
7583
7584         if (!info->attrs[NL80211_ATTR_PS_STATE])
7585                 return -EINVAL;
7586
7587         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7588
7589         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7590                 return -EINVAL;
7591
7592         wdev = dev->ieee80211_ptr;
7593
7594         if (!rdev->ops->set_power_mgmt)
7595                 return -EOPNOTSUPP;
7596
7597         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7598
7599         if (state == wdev->ps)
7600                 return 0;
7601
7602         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7603         if (!err)
7604                 wdev->ps = state;
7605         return err;
7606 }
7607
7608 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7609 {
7610         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7611         enum nl80211_ps_state ps_state;
7612         struct wireless_dev *wdev;
7613         struct net_device *dev = info->user_ptr[1];
7614         struct sk_buff *msg;
7615         void *hdr;
7616         int err;
7617
7618         wdev = dev->ieee80211_ptr;
7619
7620         if (!rdev->ops->set_power_mgmt)
7621                 return -EOPNOTSUPP;
7622
7623         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7624         if (!msg)
7625                 return -ENOMEM;
7626
7627         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7628                              NL80211_CMD_GET_POWER_SAVE);
7629         if (!hdr) {
7630                 err = -ENOBUFS;
7631                 goto free_msg;
7632         }
7633
7634         if (wdev->ps)
7635                 ps_state = NL80211_PS_ENABLED;
7636         else
7637                 ps_state = NL80211_PS_DISABLED;
7638
7639         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7640                 goto nla_put_failure;
7641
7642         genlmsg_end(msg, hdr);
7643         return genlmsg_reply(msg, info);
7644
7645  nla_put_failure:
7646         err = -ENOBUFS;
7647  free_msg:
7648         nlmsg_free(msg);
7649         return err;
7650 }
7651
7652 static struct nla_policy
7653 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7654         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7655         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7656         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7657         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7658         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7659         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7660 };
7661
7662 static int nl80211_set_cqm_txe(struct genl_info *info,
7663                                u32 rate, u32 pkts, u32 intvl)
7664 {
7665         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7666         struct net_device *dev = info->user_ptr[1];
7667         struct wireless_dev *wdev = dev->ieee80211_ptr;
7668
7669         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7670                 return -EINVAL;
7671
7672         if (!rdev->ops->set_cqm_txe_config)
7673                 return -EOPNOTSUPP;
7674
7675         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7676             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7677                 return -EOPNOTSUPP;
7678
7679         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7680 }
7681
7682 static int nl80211_set_cqm_rssi(struct genl_info *info,
7683                                 s32 threshold, u32 hysteresis)
7684 {
7685         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7686         struct net_device *dev = info->user_ptr[1];
7687         struct wireless_dev *wdev = dev->ieee80211_ptr;
7688
7689         if (threshold > 0)
7690                 return -EINVAL;
7691
7692         /* disabling - hysteresis should also be zero then */
7693         if (threshold == 0)
7694                 hysteresis = 0;
7695
7696         if (!rdev->ops->set_cqm_rssi_config)
7697                 return -EOPNOTSUPP;
7698
7699         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7700             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7701                 return -EOPNOTSUPP;
7702
7703         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7704 }
7705
7706 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7707 {
7708         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7709         struct nlattr *cqm;
7710         int err;
7711
7712         cqm = info->attrs[NL80211_ATTR_CQM];
7713         if (!cqm)
7714                 return -EINVAL;
7715
7716         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7717                                nl80211_attr_cqm_policy);
7718         if (err)
7719                 return err;
7720
7721         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7722             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7723                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7724                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7725
7726                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
7727         }
7728
7729         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7730             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7731             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7732                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7733                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7734                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7735
7736                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
7737         }
7738
7739         return -EINVAL;
7740 }
7741
7742 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7743 {
7744         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7745         struct net_device *dev = info->user_ptr[1];
7746         struct mesh_config cfg;
7747         struct mesh_setup setup;
7748         int err;
7749
7750         /* start with default */
7751         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7752         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7753
7754         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7755                 /* and parse parameters if given */
7756                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7757                 if (err)
7758                         return err;
7759         }
7760
7761         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7762             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7763                 return -EINVAL;
7764
7765         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7766         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7767
7768         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7769             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7770                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7771                         return -EINVAL;
7772
7773         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7774                 setup.beacon_interval =
7775                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7776                 if (setup.beacon_interval < 10 ||
7777                     setup.beacon_interval > 10000)
7778                         return -EINVAL;
7779         }
7780
7781         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7782                 setup.dtim_period =
7783                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7784                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7785                         return -EINVAL;
7786         }
7787
7788         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7789                 /* parse additional setup parameters if given */
7790                 err = nl80211_parse_mesh_setup(info, &setup);
7791                 if (err)
7792                         return err;
7793         }
7794
7795         if (setup.user_mpm)
7796                 cfg.auto_open_plinks = false;
7797
7798         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7799                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7800                 if (err)
7801                         return err;
7802         } else {
7803                 /* cfg80211_join_mesh() will sort it out */
7804                 setup.chandef.chan = NULL;
7805         }
7806
7807         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7808                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7809                 int n_rates =
7810                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7811                 struct ieee80211_supported_band *sband;
7812
7813                 if (!setup.chandef.chan)
7814                         return -EINVAL;
7815
7816                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7817
7818                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7819                                              &setup.basic_rates);
7820                 if (err)
7821                         return err;
7822         }
7823
7824         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7825 }
7826
7827 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7828 {
7829         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7830         struct net_device *dev = info->user_ptr[1];
7831
7832         return cfg80211_leave_mesh(rdev, dev);
7833 }
7834
7835 #ifdef CONFIG_PM
7836 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7837                                         struct cfg80211_registered_device *rdev)
7838 {
7839         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7840         struct nlattr *nl_pats, *nl_pat;
7841         int i, pat_len;
7842
7843         if (!wowlan->n_patterns)
7844                 return 0;
7845
7846         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7847         if (!nl_pats)
7848                 return -ENOBUFS;
7849
7850         for (i = 0; i < wowlan->n_patterns; i++) {
7851                 nl_pat = nla_nest_start(msg, i + 1);
7852                 if (!nl_pat)
7853                         return -ENOBUFS;
7854                 pat_len = wowlan->patterns[i].pattern_len;
7855                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7856                             wowlan->patterns[i].mask) ||
7857                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7858                             wowlan->patterns[i].pattern) ||
7859                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7860                                 wowlan->patterns[i].pkt_offset))
7861                         return -ENOBUFS;
7862                 nla_nest_end(msg, nl_pat);
7863         }
7864         nla_nest_end(msg, nl_pats);
7865
7866         return 0;
7867 }
7868
7869 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7870                                    struct cfg80211_wowlan_tcp *tcp)
7871 {
7872         struct nlattr *nl_tcp;
7873
7874         if (!tcp)
7875                 return 0;
7876
7877         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7878         if (!nl_tcp)
7879                 return -ENOBUFS;
7880
7881         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7882             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7883             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7884             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7885             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7886             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7887                     tcp->payload_len, tcp->payload) ||
7888             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7889                         tcp->data_interval) ||
7890             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7891                     tcp->wake_len, tcp->wake_data) ||
7892             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7893                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7894                 return -ENOBUFS;
7895
7896         if (tcp->payload_seq.len &&
7897             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7898                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7899                 return -ENOBUFS;
7900
7901         if (tcp->payload_tok.len &&
7902             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7903                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7904                     &tcp->payload_tok))
7905                 return -ENOBUFS;
7906
7907         nla_nest_end(msg, nl_tcp);
7908
7909         return 0;
7910 }
7911
7912 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7913 {
7914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7915         struct sk_buff *msg;
7916         void *hdr;
7917         u32 size = NLMSG_DEFAULT_SIZE;
7918
7919         if (!rdev->wiphy.wowlan)
7920                 return -EOPNOTSUPP;
7921
7922         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7923                 /* adjust size to have room for all the data */
7924                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7925                         rdev->wiphy.wowlan_config->tcp->payload_len +
7926                         rdev->wiphy.wowlan_config->tcp->wake_len +
7927                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7928         }
7929
7930         msg = nlmsg_new(size, GFP_KERNEL);
7931         if (!msg)
7932                 return -ENOMEM;
7933
7934         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7935                              NL80211_CMD_GET_WOWLAN);
7936         if (!hdr)
7937                 goto nla_put_failure;
7938
7939         if (rdev->wiphy.wowlan_config) {
7940                 struct nlattr *nl_wowlan;
7941
7942                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7943                 if (!nl_wowlan)
7944                         goto nla_put_failure;
7945
7946                 if ((rdev->wiphy.wowlan_config->any &&
7947                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7948                     (rdev->wiphy.wowlan_config->disconnect &&
7949                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7950                     (rdev->wiphy.wowlan_config->magic_pkt &&
7951                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7952                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7953                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7954                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7955                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7956                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7957                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7958                     (rdev->wiphy.wowlan_config->rfkill_release &&
7959                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7960                         goto nla_put_failure;
7961
7962                 if (nl80211_send_wowlan_patterns(msg, rdev))
7963                         goto nla_put_failure;
7964
7965                 if (nl80211_send_wowlan_tcp(msg,
7966                                             rdev->wiphy.wowlan_config->tcp))
7967                         goto nla_put_failure;
7968
7969                 nla_nest_end(msg, nl_wowlan);
7970         }
7971
7972         genlmsg_end(msg, hdr);
7973         return genlmsg_reply(msg, info);
7974
7975 nla_put_failure:
7976         nlmsg_free(msg);
7977         return -ENOBUFS;
7978 }
7979
7980 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7981                                     struct nlattr *attr,
7982                                     struct cfg80211_wowlan *trig)
7983 {
7984         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7985         struct cfg80211_wowlan_tcp *cfg;
7986         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7987         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7988         u32 size;
7989         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7990         int err, port;
7991
7992         if (!rdev->wiphy.wowlan->tcp)
7993                 return -EINVAL;
7994
7995         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7996                         nla_data(attr), nla_len(attr),
7997                         nl80211_wowlan_tcp_policy);
7998         if (err)
7999                 return err;
8000
8001         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8002             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8003             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8004             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8005             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8006             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8007             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8008             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8009                 return -EINVAL;
8010
8011         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8012         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8013                 return -EINVAL;
8014
8015         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8016                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8017             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8018                 return -EINVAL;
8019
8020         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8021         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8022                 return -EINVAL;
8023
8024         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8025         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8026                 return -EINVAL;
8027
8028         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8029                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8030
8031                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8032                 tokens_size = tokln - sizeof(*tok);
8033
8034                 if (!tok->len || tokens_size % tok->len)
8035                         return -EINVAL;
8036                 if (!rdev->wiphy.wowlan->tcp->tok)
8037                         return -EINVAL;
8038                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8039                         return -EINVAL;
8040                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8041                         return -EINVAL;
8042                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8043                         return -EINVAL;
8044                 if (tok->offset + tok->len > data_size)
8045                         return -EINVAL;
8046         }
8047
8048         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8049                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8050                 if (!rdev->wiphy.wowlan->tcp->seq)
8051                         return -EINVAL;
8052                 if (seq->len == 0 || seq->len > 4)
8053                         return -EINVAL;
8054                 if (seq->len + seq->offset > data_size)
8055                         return -EINVAL;
8056         }
8057
8058         size = sizeof(*cfg);
8059         size += data_size;
8060         size += wake_size + wake_mask_size;
8061         size += tokens_size;
8062
8063         cfg = kzalloc(size, GFP_KERNEL);
8064         if (!cfg)
8065                 return -ENOMEM;
8066         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8067         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8068         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8069                ETH_ALEN);
8070         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8071                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8072         else
8073                 port = 0;
8074 #ifdef CONFIG_INET
8075         /* allocate a socket and port for it and use it */
8076         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8077                             IPPROTO_TCP, &cfg->sock, 1);
8078         if (err) {
8079                 kfree(cfg);
8080                 return err;
8081         }
8082         if (inet_csk_get_port(cfg->sock->sk, port)) {
8083                 sock_release(cfg->sock);
8084                 kfree(cfg);
8085                 return -EADDRINUSE;
8086         }
8087         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8088 #else
8089         if (!port) {
8090                 kfree(cfg);
8091                 return -EINVAL;
8092         }
8093         cfg->src_port = port;
8094 #endif
8095
8096         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8097         cfg->payload_len = data_size;
8098         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8099         memcpy((void *)cfg->payload,
8100                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8101                data_size);
8102         if (seq)
8103                 cfg->payload_seq = *seq;
8104         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8105         cfg->wake_len = wake_size;
8106         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8107         memcpy((void *)cfg->wake_data,
8108                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8109                wake_size);
8110         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8111                          data_size + wake_size;
8112         memcpy((void *)cfg->wake_mask,
8113                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8114                wake_mask_size);
8115         if (tok) {
8116                 cfg->tokens_size = tokens_size;
8117                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8118         }
8119
8120         trig->tcp = cfg;
8121
8122         return 0;
8123 }
8124
8125 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8126 {
8127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8128         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8129         struct cfg80211_wowlan new_triggers = {};
8130         struct cfg80211_wowlan *ntrig;
8131         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8132         int err, i;
8133         bool prev_enabled = rdev->wiphy.wowlan_config;
8134
8135         if (!wowlan)
8136                 return -EOPNOTSUPP;
8137
8138         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8139                 cfg80211_rdev_free_wowlan(rdev);
8140                 rdev->wiphy.wowlan_config = NULL;
8141                 goto set_wakeup;
8142         }
8143
8144         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8145                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8146                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8147                         nl80211_wowlan_policy);
8148         if (err)
8149                 return err;
8150
8151         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8152                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8153                         return -EINVAL;
8154                 new_triggers.any = true;
8155         }
8156
8157         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8158                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8159                         return -EINVAL;
8160                 new_triggers.disconnect = true;
8161         }
8162
8163         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8164                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8165                         return -EINVAL;
8166                 new_triggers.magic_pkt = true;
8167         }
8168
8169         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8170                 return -EINVAL;
8171
8172         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8173                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8174                         return -EINVAL;
8175                 new_triggers.gtk_rekey_failure = true;
8176         }
8177
8178         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8179                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8180                         return -EINVAL;
8181                 new_triggers.eap_identity_req = true;
8182         }
8183
8184         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8185                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8186                         return -EINVAL;
8187                 new_triggers.four_way_handshake = true;
8188         }
8189
8190         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8191                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8192                         return -EINVAL;
8193                 new_triggers.rfkill_release = true;
8194         }
8195
8196         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8197                 struct nlattr *pat;
8198                 int n_patterns = 0;
8199                 int rem, pat_len, mask_len, pkt_offset;
8200                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8201
8202                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8203                                     rem)
8204                         n_patterns++;
8205                 if (n_patterns > wowlan->n_patterns)
8206                         return -EINVAL;
8207
8208                 new_triggers.patterns = kcalloc(n_patterns,
8209                                                 sizeof(new_triggers.patterns[0]),
8210                                                 GFP_KERNEL);
8211                 if (!new_triggers.patterns)
8212                         return -ENOMEM;
8213
8214                 new_triggers.n_patterns = n_patterns;
8215                 i = 0;
8216
8217                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8218                                     rem) {
8219                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8220                                   nla_len(pat), NULL);
8221                         err = -EINVAL;
8222                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8223                             !pat_tb[NL80211_PKTPAT_PATTERN])
8224                                 goto error;
8225                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8226                         mask_len = DIV_ROUND_UP(pat_len, 8);
8227                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8228                                 goto error;
8229                         if (pat_len > wowlan->pattern_max_len ||
8230                             pat_len < wowlan->pattern_min_len)
8231                                 goto error;
8232
8233                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8234                                 pkt_offset = 0;
8235                         else
8236                                 pkt_offset = nla_get_u32(
8237                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8238                         if (pkt_offset > wowlan->max_pkt_offset)
8239                                 goto error;
8240                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8241
8242                         new_triggers.patterns[i].mask =
8243                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8244                         if (!new_triggers.patterns[i].mask) {
8245                                 err = -ENOMEM;
8246                                 goto error;
8247                         }
8248                         new_triggers.patterns[i].pattern =
8249                                 new_triggers.patterns[i].mask + mask_len;
8250                         memcpy(new_triggers.patterns[i].mask,
8251                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8252                                mask_len);
8253                         new_triggers.patterns[i].pattern_len = pat_len;
8254                         memcpy(new_triggers.patterns[i].pattern,
8255                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8256                                pat_len);
8257                         i++;
8258                 }
8259         }
8260
8261         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8262                 err = nl80211_parse_wowlan_tcp(
8263                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8264                         &new_triggers);
8265                 if (err)
8266                         goto error;
8267         }
8268
8269         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8270         if (!ntrig) {
8271                 err = -ENOMEM;
8272                 goto error;
8273         }
8274         cfg80211_rdev_free_wowlan(rdev);
8275         rdev->wiphy.wowlan_config = ntrig;
8276
8277  set_wakeup:
8278         if (rdev->ops->set_wakeup &&
8279             prev_enabled != !!rdev->wiphy.wowlan_config)
8280                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8281
8282         return 0;
8283  error:
8284         for (i = 0; i < new_triggers.n_patterns; i++)
8285                 kfree(new_triggers.patterns[i].mask);
8286         kfree(new_triggers.patterns);
8287         if (new_triggers.tcp && new_triggers.tcp->sock)
8288                 sock_release(new_triggers.tcp->sock);
8289         kfree(new_triggers.tcp);
8290         return err;
8291 }
8292 #endif
8293
8294 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8295                                        struct cfg80211_registered_device *rdev)
8296 {
8297         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8298         int i, j, pat_len;
8299         struct cfg80211_coalesce_rules *rule;
8300
8301         if (!rdev->coalesce->n_rules)
8302                 return 0;
8303
8304         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8305         if (!nl_rules)
8306                 return -ENOBUFS;
8307
8308         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8309                 nl_rule = nla_nest_start(msg, i + 1);
8310                 if (!nl_rule)
8311                         return -ENOBUFS;
8312
8313                 rule = &rdev->coalesce->rules[i];
8314                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8315                                 rule->delay))
8316                         return -ENOBUFS;
8317
8318                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8319                                 rule->condition))
8320                         return -ENOBUFS;
8321
8322                 nl_pats = nla_nest_start(msg,
8323                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8324                 if (!nl_pats)
8325                         return -ENOBUFS;
8326
8327                 for (j = 0; j < rule->n_patterns; j++) {
8328                         nl_pat = nla_nest_start(msg, j + 1);
8329                         if (!nl_pat)
8330                                 return -ENOBUFS;
8331                         pat_len = rule->patterns[j].pattern_len;
8332                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8333                                     DIV_ROUND_UP(pat_len, 8),
8334                                     rule->patterns[j].mask) ||
8335                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8336                                     rule->patterns[j].pattern) ||
8337                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8338                                         rule->patterns[j].pkt_offset))
8339                                 return -ENOBUFS;
8340                         nla_nest_end(msg, nl_pat);
8341                 }
8342                 nla_nest_end(msg, nl_pats);
8343                 nla_nest_end(msg, nl_rule);
8344         }
8345         nla_nest_end(msg, nl_rules);
8346
8347         return 0;
8348 }
8349
8350 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8351 {
8352         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8353         struct sk_buff *msg;
8354         void *hdr;
8355
8356         if (!rdev->wiphy.coalesce)
8357                 return -EOPNOTSUPP;
8358
8359         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8360         if (!msg)
8361                 return -ENOMEM;
8362
8363         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8364                              NL80211_CMD_GET_COALESCE);
8365         if (!hdr)
8366                 goto nla_put_failure;
8367
8368         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8369                 goto nla_put_failure;
8370
8371         genlmsg_end(msg, hdr);
8372         return genlmsg_reply(msg, info);
8373
8374 nla_put_failure:
8375         nlmsg_free(msg);
8376         return -ENOBUFS;
8377 }
8378
8379 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8380 {
8381         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8382         int i, j;
8383         struct cfg80211_coalesce_rules *rule;
8384
8385         if (!coalesce)
8386                 return;
8387
8388         for (i = 0; i < coalesce->n_rules; i++) {
8389                 rule = &coalesce->rules[i];
8390                 for (j = 0; j < rule->n_patterns; j++)
8391                         kfree(rule->patterns[j].mask);
8392                 kfree(rule->patterns);
8393         }
8394         kfree(coalesce->rules);
8395         kfree(coalesce);
8396         rdev->coalesce = NULL;
8397 }
8398
8399 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8400                                        struct nlattr *rule,
8401                                        struct cfg80211_coalesce_rules *new_rule)
8402 {
8403         int err, i;
8404         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8405         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8406         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8407         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8408
8409         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8410                         nla_len(rule), nl80211_coalesce_policy);
8411         if (err)
8412                 return err;
8413
8414         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8415                 new_rule->delay =
8416                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8417         if (new_rule->delay > coalesce->max_delay)
8418                 return -EINVAL;
8419
8420         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8421                 new_rule->condition =
8422                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8423         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8424             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8425                 return -EINVAL;
8426
8427         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8428                 return -EINVAL;
8429
8430         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8431                             rem)
8432                 n_patterns++;
8433         if (n_patterns > coalesce->n_patterns)
8434                 return -EINVAL;
8435
8436         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8437                                      GFP_KERNEL);
8438         if (!new_rule->patterns)
8439                 return -ENOMEM;
8440
8441         new_rule->n_patterns = n_patterns;
8442         i = 0;
8443
8444         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8445                             rem) {
8446                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8447                           nla_len(pat), NULL);
8448                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8449                     !pat_tb[NL80211_PKTPAT_PATTERN])
8450                         return -EINVAL;
8451                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8452                 mask_len = DIV_ROUND_UP(pat_len, 8);
8453                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8454                         return -EINVAL;
8455                 if (pat_len > coalesce->pattern_max_len ||
8456                     pat_len < coalesce->pattern_min_len)
8457                         return -EINVAL;
8458
8459                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8460                         pkt_offset = 0;
8461                 else
8462                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8463                 if (pkt_offset > coalesce->max_pkt_offset)
8464                         return -EINVAL;
8465                 new_rule->patterns[i].pkt_offset = pkt_offset;
8466
8467                 new_rule->patterns[i].mask =
8468                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8469                 if (!new_rule->patterns[i].mask)
8470                         return -ENOMEM;
8471                 new_rule->patterns[i].pattern =
8472                         new_rule->patterns[i].mask + mask_len;
8473                 memcpy(new_rule->patterns[i].mask,
8474                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8475                 new_rule->patterns[i].pattern_len = pat_len;
8476                 memcpy(new_rule->patterns[i].pattern,
8477                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8478                 i++;
8479         }
8480
8481         return 0;
8482 }
8483
8484 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8485 {
8486         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8487         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8488         struct cfg80211_coalesce new_coalesce = {};
8489         struct cfg80211_coalesce *n_coalesce;
8490         int err, rem_rule, n_rules = 0, i, j;
8491         struct nlattr *rule;
8492         struct cfg80211_coalesce_rules *tmp_rule;
8493
8494         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8495                 return -EOPNOTSUPP;
8496
8497         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8498                 cfg80211_rdev_free_coalesce(rdev);
8499                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8500                 return 0;
8501         }
8502
8503         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8504                             rem_rule)
8505                 n_rules++;
8506         if (n_rules > coalesce->n_rules)
8507                 return -EINVAL;
8508
8509         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8510                                      GFP_KERNEL);
8511         if (!new_coalesce.rules)
8512                 return -ENOMEM;
8513
8514         new_coalesce.n_rules = n_rules;
8515         i = 0;
8516
8517         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8518                             rem_rule) {
8519                 err = nl80211_parse_coalesce_rule(rdev, rule,
8520                                                   &new_coalesce.rules[i]);
8521                 if (err)
8522                         goto error;
8523
8524                 i++;
8525         }
8526
8527         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8528         if (err)
8529                 goto error;
8530
8531         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8532         if (!n_coalesce) {
8533                 err = -ENOMEM;
8534                 goto error;
8535         }
8536         cfg80211_rdev_free_coalesce(rdev);
8537         rdev->coalesce = n_coalesce;
8538
8539         return 0;
8540 error:
8541         for (i = 0; i < new_coalesce.n_rules; i++) {
8542                 tmp_rule = &new_coalesce.rules[i];
8543                 for (j = 0; j < tmp_rule->n_patterns; j++)
8544                         kfree(tmp_rule->patterns[j].mask);
8545                 kfree(tmp_rule->patterns);
8546         }
8547         kfree(new_coalesce.rules);
8548
8549         return err;
8550 }
8551
8552 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8553 {
8554         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8555         struct net_device *dev = info->user_ptr[1];
8556         struct wireless_dev *wdev = dev->ieee80211_ptr;
8557         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8558         struct cfg80211_gtk_rekey_data rekey_data;
8559         int err;
8560
8561         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8562                 return -EINVAL;
8563
8564         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8565                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8566                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8567                         nl80211_rekey_policy);
8568         if (err)
8569                 return err;
8570
8571         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8572                 return -ERANGE;
8573         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8574                 return -ERANGE;
8575         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8576                 return -ERANGE;
8577
8578         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8579                NL80211_KEK_LEN);
8580         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8581                NL80211_KCK_LEN);
8582         memcpy(rekey_data.replay_ctr,
8583                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8584                NL80211_REPLAY_CTR_LEN);
8585
8586         wdev_lock(wdev);
8587         if (!wdev->current_bss) {
8588                 err = -ENOTCONN;
8589                 goto out;
8590         }
8591
8592         if (!rdev->ops->set_rekey_data) {
8593                 err = -EOPNOTSUPP;
8594                 goto out;
8595         }
8596
8597         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8598  out:
8599         wdev_unlock(wdev);
8600         return err;
8601 }
8602
8603 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8604                                              struct genl_info *info)
8605 {
8606         struct net_device *dev = info->user_ptr[1];
8607         struct wireless_dev *wdev = dev->ieee80211_ptr;
8608
8609         if (wdev->iftype != NL80211_IFTYPE_AP &&
8610             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8611                 return -EINVAL;
8612
8613         if (wdev->ap_unexpected_nlportid)
8614                 return -EBUSY;
8615
8616         wdev->ap_unexpected_nlportid = info->snd_portid;
8617         return 0;
8618 }
8619
8620 static int nl80211_probe_client(struct sk_buff *skb,
8621                                 struct genl_info *info)
8622 {
8623         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8624         struct net_device *dev = info->user_ptr[1];
8625         struct wireless_dev *wdev = dev->ieee80211_ptr;
8626         struct sk_buff *msg;
8627         void *hdr;
8628         const u8 *addr;
8629         u64 cookie;
8630         int err;
8631
8632         if (wdev->iftype != NL80211_IFTYPE_AP &&
8633             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8634                 return -EOPNOTSUPP;
8635
8636         if (!info->attrs[NL80211_ATTR_MAC])
8637                 return -EINVAL;
8638
8639         if (!rdev->ops->probe_client)
8640                 return -EOPNOTSUPP;
8641
8642         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8643         if (!msg)
8644                 return -ENOMEM;
8645
8646         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8647                              NL80211_CMD_PROBE_CLIENT);
8648         if (!hdr) {
8649                 err = -ENOBUFS;
8650                 goto free_msg;
8651         }
8652
8653         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8654
8655         err = rdev_probe_client(rdev, dev, addr, &cookie);
8656         if (err)
8657                 goto free_msg;
8658
8659         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8660                 goto nla_put_failure;
8661
8662         genlmsg_end(msg, hdr);
8663
8664         return genlmsg_reply(msg, info);
8665
8666  nla_put_failure:
8667         err = -ENOBUFS;
8668  free_msg:
8669         nlmsg_free(msg);
8670         return err;
8671 }
8672
8673 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8674 {
8675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8676         struct cfg80211_beacon_registration *reg, *nreg;
8677         int rv;
8678
8679         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8680                 return -EOPNOTSUPP;
8681
8682         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8683         if (!nreg)
8684                 return -ENOMEM;
8685
8686         /* First, check if already registered. */
8687         spin_lock_bh(&rdev->beacon_registrations_lock);
8688         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8689                 if (reg->nlportid == info->snd_portid) {
8690                         rv = -EALREADY;
8691                         goto out_err;
8692                 }
8693         }
8694         /* Add it to the list */
8695         nreg->nlportid = info->snd_portid;
8696         list_add(&nreg->list, &rdev->beacon_registrations);
8697
8698         spin_unlock_bh(&rdev->beacon_registrations_lock);
8699
8700         return 0;
8701 out_err:
8702         spin_unlock_bh(&rdev->beacon_registrations_lock);
8703         kfree(nreg);
8704         return rv;
8705 }
8706
8707 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8708 {
8709         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8710         struct wireless_dev *wdev = info->user_ptr[1];
8711         int err;
8712
8713         if (!rdev->ops->start_p2p_device)
8714                 return -EOPNOTSUPP;
8715
8716         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8717                 return -EOPNOTSUPP;
8718
8719         if (wdev->p2p_started)
8720                 return 0;
8721
8722         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8723         if (err)
8724                 return err;
8725
8726         err = rdev_start_p2p_device(rdev, wdev);
8727         if (err)
8728                 return err;
8729
8730         wdev->p2p_started = true;
8731         rdev->opencount++;
8732
8733         return 0;
8734 }
8735
8736 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8737 {
8738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8739         struct wireless_dev *wdev = info->user_ptr[1];
8740
8741         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8742                 return -EOPNOTSUPP;
8743
8744         if (!rdev->ops->stop_p2p_device)
8745                 return -EOPNOTSUPP;
8746
8747         cfg80211_stop_p2p_device(rdev, wdev);
8748
8749         return 0;
8750 }
8751
8752 static int nl80211_get_protocol_features(struct sk_buff *skb,
8753                                          struct genl_info *info)
8754 {
8755         void *hdr;
8756         struct sk_buff *msg;
8757
8758         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8759         if (!msg)
8760                 return -ENOMEM;
8761
8762         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8763                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8764         if (!hdr)
8765                 goto nla_put_failure;
8766
8767         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8768                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8769                 goto nla_put_failure;
8770
8771         genlmsg_end(msg, hdr);
8772         return genlmsg_reply(msg, info);
8773
8774  nla_put_failure:
8775         kfree_skb(msg);
8776         return -ENOBUFS;
8777 }
8778
8779 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8780 {
8781         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8782         struct cfg80211_update_ft_ies_params ft_params;
8783         struct net_device *dev = info->user_ptr[1];
8784
8785         if (!rdev->ops->update_ft_ies)
8786                 return -EOPNOTSUPP;
8787
8788         if (!info->attrs[NL80211_ATTR_MDID] ||
8789             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8790                 return -EINVAL;
8791
8792         memset(&ft_params, 0, sizeof(ft_params));
8793         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8794         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8795         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8796
8797         return rdev_update_ft_ies(rdev, dev, &ft_params);
8798 }
8799
8800 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8801                                        struct genl_info *info)
8802 {
8803         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8804         struct wireless_dev *wdev = info->user_ptr[1];
8805         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8806         u16 duration;
8807         int ret;
8808
8809         if (!rdev->ops->crit_proto_start)
8810                 return -EOPNOTSUPP;
8811
8812         if (WARN_ON(!rdev->ops->crit_proto_stop))
8813                 return -EINVAL;
8814
8815         if (rdev->crit_proto_nlportid)
8816                 return -EBUSY;
8817
8818         /* determine protocol if provided */
8819         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8820                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8821
8822         if (proto >= NUM_NL80211_CRIT_PROTO)
8823                 return -EINVAL;
8824
8825         /* timeout must be provided */
8826         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8827                 return -EINVAL;
8828
8829         duration =
8830                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8831
8832         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8833                 return -ERANGE;
8834
8835         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8836         if (!ret)
8837                 rdev->crit_proto_nlportid = info->snd_portid;
8838
8839         return ret;
8840 }
8841
8842 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8843                                       struct genl_info *info)
8844 {
8845         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8846         struct wireless_dev *wdev = info->user_ptr[1];
8847
8848         if (!rdev->ops->crit_proto_stop)
8849                 return -EOPNOTSUPP;
8850
8851         if (rdev->crit_proto_nlportid) {
8852                 rdev->crit_proto_nlportid = 0;
8853                 rdev_crit_proto_stop(rdev, wdev);
8854         }
8855         return 0;
8856 }
8857
8858 #define NL80211_FLAG_NEED_WIPHY         0x01
8859 #define NL80211_FLAG_NEED_NETDEV        0x02
8860 #define NL80211_FLAG_NEED_RTNL          0x04
8861 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8862 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8863                                          NL80211_FLAG_CHECK_NETDEV_UP)
8864 #define NL80211_FLAG_NEED_WDEV          0x10
8865 /* If a netdev is associated, it must be UP, P2P must be started */
8866 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8867                                          NL80211_FLAG_CHECK_NETDEV_UP)
8868
8869 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
8870                             struct genl_info *info)
8871 {
8872         struct cfg80211_registered_device *rdev;
8873         struct wireless_dev *wdev;
8874         struct net_device *dev;
8875         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8876
8877         if (rtnl)
8878                 rtnl_lock();
8879
8880         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8881                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8882                 if (IS_ERR(rdev)) {
8883                         if (rtnl)
8884                                 rtnl_unlock();
8885                         return PTR_ERR(rdev);
8886                 }
8887                 info->user_ptr[0] = rdev;
8888         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8889                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8890                 ASSERT_RTNL();
8891
8892                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8893                                                   info->attrs);
8894                 if (IS_ERR(wdev)) {
8895                         if (rtnl)
8896                                 rtnl_unlock();
8897                         return PTR_ERR(wdev);
8898                 }
8899
8900                 dev = wdev->netdev;
8901                 rdev = wiphy_to_dev(wdev->wiphy);
8902
8903                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8904                         if (!dev) {
8905                                 if (rtnl)
8906                                         rtnl_unlock();
8907                                 return -EINVAL;
8908                         }
8909
8910                         info->user_ptr[1] = dev;
8911                 } else {
8912                         info->user_ptr[1] = wdev;
8913                 }
8914
8915                 if (dev) {
8916                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8917                             !netif_running(dev)) {
8918                                 if (rtnl)
8919                                         rtnl_unlock();
8920                                 return -ENETDOWN;
8921                         }
8922
8923                         dev_hold(dev);
8924                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8925                         if (!wdev->p2p_started) {
8926                                 if (rtnl)
8927                                         rtnl_unlock();
8928                                 return -ENETDOWN;
8929                         }
8930                 }
8931
8932                 info->user_ptr[0] = rdev;
8933         }
8934
8935         return 0;
8936 }
8937
8938 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
8939                               struct genl_info *info)
8940 {
8941         if (info->user_ptr[1]) {
8942                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8943                         struct wireless_dev *wdev = info->user_ptr[1];
8944
8945                         if (wdev->netdev)
8946                                 dev_put(wdev->netdev);
8947                 } else {
8948                         dev_put(info->user_ptr[1]);
8949                 }
8950         }
8951         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8952                 rtnl_unlock();
8953 }
8954
8955 static const struct genl_ops nl80211_ops[] = {
8956         {
8957                 .cmd = NL80211_CMD_GET_WIPHY,
8958                 .doit = nl80211_get_wiphy,
8959                 .dumpit = nl80211_dump_wiphy,
8960                 .done = nl80211_dump_wiphy_done,
8961                 .policy = nl80211_policy,
8962                 /* can be retrieved by unprivileged users */
8963                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8964                                   NL80211_FLAG_NEED_RTNL,
8965         },
8966         {
8967                 .cmd = NL80211_CMD_SET_WIPHY,
8968                 .doit = nl80211_set_wiphy,
8969                 .policy = nl80211_policy,
8970                 .flags = GENL_ADMIN_PERM,
8971                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8972         },
8973         {
8974                 .cmd = NL80211_CMD_GET_INTERFACE,
8975                 .doit = nl80211_get_interface,
8976                 .dumpit = nl80211_dump_interface,
8977                 .policy = nl80211_policy,
8978                 /* can be retrieved by unprivileged users */
8979                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8980                                   NL80211_FLAG_NEED_RTNL,
8981         },
8982         {
8983                 .cmd = NL80211_CMD_SET_INTERFACE,
8984                 .doit = nl80211_set_interface,
8985                 .policy = nl80211_policy,
8986                 .flags = GENL_ADMIN_PERM,
8987                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8988                                   NL80211_FLAG_NEED_RTNL,
8989         },
8990         {
8991                 .cmd = NL80211_CMD_NEW_INTERFACE,
8992                 .doit = nl80211_new_interface,
8993                 .policy = nl80211_policy,
8994                 .flags = GENL_ADMIN_PERM,
8995                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8996                                   NL80211_FLAG_NEED_RTNL,
8997         },
8998         {
8999                 .cmd = NL80211_CMD_DEL_INTERFACE,
9000                 .doit = nl80211_del_interface,
9001                 .policy = nl80211_policy,
9002                 .flags = GENL_ADMIN_PERM,
9003                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9004                                   NL80211_FLAG_NEED_RTNL,
9005         },
9006         {
9007                 .cmd = NL80211_CMD_GET_KEY,
9008                 .doit = nl80211_get_key,
9009                 .policy = nl80211_policy,
9010                 .flags = GENL_ADMIN_PERM,
9011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9012                                   NL80211_FLAG_NEED_RTNL,
9013         },
9014         {
9015                 .cmd = NL80211_CMD_SET_KEY,
9016                 .doit = nl80211_set_key,
9017                 .policy = nl80211_policy,
9018                 .flags = GENL_ADMIN_PERM,
9019                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9020                                   NL80211_FLAG_NEED_RTNL,
9021         },
9022         {
9023                 .cmd = NL80211_CMD_NEW_KEY,
9024                 .doit = nl80211_new_key,
9025                 .policy = nl80211_policy,
9026                 .flags = GENL_ADMIN_PERM,
9027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9028                                   NL80211_FLAG_NEED_RTNL,
9029         },
9030         {
9031                 .cmd = NL80211_CMD_DEL_KEY,
9032                 .doit = nl80211_del_key,
9033                 .policy = nl80211_policy,
9034                 .flags = GENL_ADMIN_PERM,
9035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9036                                   NL80211_FLAG_NEED_RTNL,
9037         },
9038         {
9039                 .cmd = NL80211_CMD_SET_BEACON,
9040                 .policy = nl80211_policy,
9041                 .flags = GENL_ADMIN_PERM,
9042                 .doit = nl80211_set_beacon,
9043                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9044                                   NL80211_FLAG_NEED_RTNL,
9045         },
9046         {
9047                 .cmd = NL80211_CMD_START_AP,
9048                 .policy = nl80211_policy,
9049                 .flags = GENL_ADMIN_PERM,
9050                 .doit = nl80211_start_ap,
9051                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9052                                   NL80211_FLAG_NEED_RTNL,
9053         },
9054         {
9055                 .cmd = NL80211_CMD_STOP_AP,
9056                 .policy = nl80211_policy,
9057                 .flags = GENL_ADMIN_PERM,
9058                 .doit = nl80211_stop_ap,
9059                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9060                                   NL80211_FLAG_NEED_RTNL,
9061         },
9062         {
9063                 .cmd = NL80211_CMD_GET_STATION,
9064                 .doit = nl80211_get_station,
9065                 .dumpit = nl80211_dump_station,
9066                 .policy = nl80211_policy,
9067                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9068                                   NL80211_FLAG_NEED_RTNL,
9069         },
9070         {
9071                 .cmd = NL80211_CMD_SET_STATION,
9072                 .doit = nl80211_set_station,
9073                 .policy = nl80211_policy,
9074                 .flags = GENL_ADMIN_PERM,
9075                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9076                                   NL80211_FLAG_NEED_RTNL,
9077         },
9078         {
9079                 .cmd = NL80211_CMD_NEW_STATION,
9080                 .doit = nl80211_new_station,
9081                 .policy = nl80211_policy,
9082                 .flags = GENL_ADMIN_PERM,
9083                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9084                                   NL80211_FLAG_NEED_RTNL,
9085         },
9086         {
9087                 .cmd = NL80211_CMD_DEL_STATION,
9088                 .doit = nl80211_del_station,
9089                 .policy = nl80211_policy,
9090                 .flags = GENL_ADMIN_PERM,
9091                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9092                                   NL80211_FLAG_NEED_RTNL,
9093         },
9094         {
9095                 .cmd = NL80211_CMD_GET_MPATH,
9096                 .doit = nl80211_get_mpath,
9097                 .dumpit = nl80211_dump_mpath,
9098                 .policy = nl80211_policy,
9099                 .flags = GENL_ADMIN_PERM,
9100                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9101                                   NL80211_FLAG_NEED_RTNL,
9102         },
9103         {
9104                 .cmd = NL80211_CMD_SET_MPATH,
9105                 .doit = nl80211_set_mpath,
9106                 .policy = nl80211_policy,
9107                 .flags = GENL_ADMIN_PERM,
9108                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9109                                   NL80211_FLAG_NEED_RTNL,
9110         },
9111         {
9112                 .cmd = NL80211_CMD_NEW_MPATH,
9113                 .doit = nl80211_new_mpath,
9114                 .policy = nl80211_policy,
9115                 .flags = GENL_ADMIN_PERM,
9116                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9117                                   NL80211_FLAG_NEED_RTNL,
9118         },
9119         {
9120                 .cmd = NL80211_CMD_DEL_MPATH,
9121                 .doit = nl80211_del_mpath,
9122                 .policy = nl80211_policy,
9123                 .flags = GENL_ADMIN_PERM,
9124                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9125                                   NL80211_FLAG_NEED_RTNL,
9126         },
9127         {
9128                 .cmd = NL80211_CMD_SET_BSS,
9129                 .doit = nl80211_set_bss,
9130                 .policy = nl80211_policy,
9131                 .flags = GENL_ADMIN_PERM,
9132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9133                                   NL80211_FLAG_NEED_RTNL,
9134         },
9135         {
9136                 .cmd = NL80211_CMD_GET_REG,
9137                 .doit = nl80211_get_reg,
9138                 .policy = nl80211_policy,
9139                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9140                 /* can be retrieved by unprivileged users */
9141         },
9142         {
9143                 .cmd = NL80211_CMD_SET_REG,
9144                 .doit = nl80211_set_reg,
9145                 .policy = nl80211_policy,
9146                 .flags = GENL_ADMIN_PERM,
9147                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9148         },
9149         {
9150                 .cmd = NL80211_CMD_REQ_SET_REG,
9151                 .doit = nl80211_req_set_reg,
9152                 .policy = nl80211_policy,
9153                 .flags = GENL_ADMIN_PERM,
9154         },
9155         {
9156                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9157                 .doit = nl80211_get_mesh_config,
9158                 .policy = nl80211_policy,
9159                 /* can be retrieved by unprivileged users */
9160                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9161                                   NL80211_FLAG_NEED_RTNL,
9162         },
9163         {
9164                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9165                 .doit = nl80211_update_mesh_config,
9166                 .policy = nl80211_policy,
9167                 .flags = GENL_ADMIN_PERM,
9168                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9169                                   NL80211_FLAG_NEED_RTNL,
9170         },
9171         {
9172                 .cmd = NL80211_CMD_TRIGGER_SCAN,
9173                 .doit = nl80211_trigger_scan,
9174                 .policy = nl80211_policy,
9175                 .flags = GENL_ADMIN_PERM,
9176                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9177                                   NL80211_FLAG_NEED_RTNL,
9178         },
9179         {
9180                 .cmd = NL80211_CMD_GET_SCAN,
9181                 .policy = nl80211_policy,
9182                 .dumpit = nl80211_dump_scan,
9183         },
9184         {
9185                 .cmd = NL80211_CMD_START_SCHED_SCAN,
9186                 .doit = nl80211_start_sched_scan,
9187                 .policy = nl80211_policy,
9188                 .flags = GENL_ADMIN_PERM,
9189                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9190                                   NL80211_FLAG_NEED_RTNL,
9191         },
9192         {
9193                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9194                 .doit = nl80211_stop_sched_scan,
9195                 .policy = nl80211_policy,
9196                 .flags = GENL_ADMIN_PERM,
9197                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9198                                   NL80211_FLAG_NEED_RTNL,
9199         },
9200         {
9201                 .cmd = NL80211_CMD_AUTHENTICATE,
9202                 .doit = nl80211_authenticate,
9203                 .policy = nl80211_policy,
9204                 .flags = GENL_ADMIN_PERM,
9205                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9206                                   NL80211_FLAG_NEED_RTNL,
9207         },
9208         {
9209                 .cmd = NL80211_CMD_ASSOCIATE,
9210                 .doit = nl80211_associate,
9211                 .policy = nl80211_policy,
9212                 .flags = GENL_ADMIN_PERM,
9213                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9214                                   NL80211_FLAG_NEED_RTNL,
9215         },
9216         {
9217                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9218                 .doit = nl80211_deauthenticate,
9219                 .policy = nl80211_policy,
9220                 .flags = GENL_ADMIN_PERM,
9221                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9222                                   NL80211_FLAG_NEED_RTNL,
9223         },
9224         {
9225                 .cmd = NL80211_CMD_DISASSOCIATE,
9226                 .doit = nl80211_disassociate,
9227                 .policy = nl80211_policy,
9228                 .flags = GENL_ADMIN_PERM,
9229                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9230                                   NL80211_FLAG_NEED_RTNL,
9231         },
9232         {
9233                 .cmd = NL80211_CMD_JOIN_IBSS,
9234                 .doit = nl80211_join_ibss,
9235                 .policy = nl80211_policy,
9236                 .flags = GENL_ADMIN_PERM,
9237                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9238                                   NL80211_FLAG_NEED_RTNL,
9239         },
9240         {
9241                 .cmd = NL80211_CMD_LEAVE_IBSS,
9242                 .doit = nl80211_leave_ibss,
9243                 .policy = nl80211_policy,
9244                 .flags = GENL_ADMIN_PERM,
9245                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9246                                   NL80211_FLAG_NEED_RTNL,
9247         },
9248 #ifdef CONFIG_NL80211_TESTMODE
9249         {
9250                 .cmd = NL80211_CMD_TESTMODE,
9251                 .doit = nl80211_testmode_do,
9252                 .dumpit = nl80211_testmode_dump,
9253                 .policy = nl80211_policy,
9254                 .flags = GENL_ADMIN_PERM,
9255                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9256                                   NL80211_FLAG_NEED_RTNL,
9257         },
9258 #endif
9259         {
9260                 .cmd = NL80211_CMD_CONNECT,
9261                 .doit = nl80211_connect,
9262                 .policy = nl80211_policy,
9263                 .flags = GENL_ADMIN_PERM,
9264                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9265                                   NL80211_FLAG_NEED_RTNL,
9266         },
9267         {
9268                 .cmd = NL80211_CMD_DISCONNECT,
9269                 .doit = nl80211_disconnect,
9270                 .policy = nl80211_policy,
9271                 .flags = GENL_ADMIN_PERM,
9272                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9273                                   NL80211_FLAG_NEED_RTNL,
9274         },
9275         {
9276                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9277                 .doit = nl80211_wiphy_netns,
9278                 .policy = nl80211_policy,
9279                 .flags = GENL_ADMIN_PERM,
9280                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9281                                   NL80211_FLAG_NEED_RTNL,
9282         },
9283         {
9284                 .cmd = NL80211_CMD_GET_SURVEY,
9285                 .policy = nl80211_policy,
9286                 .dumpit = nl80211_dump_survey,
9287         },
9288         {
9289                 .cmd = NL80211_CMD_SET_PMKSA,
9290                 .doit = nl80211_setdel_pmksa,
9291                 .policy = nl80211_policy,
9292                 .flags = GENL_ADMIN_PERM,
9293                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9294                                   NL80211_FLAG_NEED_RTNL,
9295         },
9296         {
9297                 .cmd = NL80211_CMD_DEL_PMKSA,
9298                 .doit = nl80211_setdel_pmksa,
9299                 .policy = nl80211_policy,
9300                 .flags = GENL_ADMIN_PERM,
9301                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9302                                   NL80211_FLAG_NEED_RTNL,
9303         },
9304         {
9305                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9306                 .doit = nl80211_flush_pmksa,
9307                 .policy = nl80211_policy,
9308                 .flags = GENL_ADMIN_PERM,
9309                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9310                                   NL80211_FLAG_NEED_RTNL,
9311         },
9312         {
9313                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9314                 .doit = nl80211_remain_on_channel,
9315                 .policy = nl80211_policy,
9316                 .flags = GENL_ADMIN_PERM,
9317                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9318                                   NL80211_FLAG_NEED_RTNL,
9319         },
9320         {
9321                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9322                 .doit = nl80211_cancel_remain_on_channel,
9323                 .policy = nl80211_policy,
9324                 .flags = GENL_ADMIN_PERM,
9325                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9326                                   NL80211_FLAG_NEED_RTNL,
9327         },
9328         {
9329                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9330                 .doit = nl80211_set_tx_bitrate_mask,
9331                 .policy = nl80211_policy,
9332                 .flags = GENL_ADMIN_PERM,
9333                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9334                                   NL80211_FLAG_NEED_RTNL,
9335         },
9336         {
9337                 .cmd = NL80211_CMD_REGISTER_FRAME,
9338                 .doit = nl80211_register_mgmt,
9339                 .policy = nl80211_policy,
9340                 .flags = GENL_ADMIN_PERM,
9341                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9342                                   NL80211_FLAG_NEED_RTNL,
9343         },
9344         {
9345                 .cmd = NL80211_CMD_FRAME,
9346                 .doit = nl80211_tx_mgmt,
9347                 .policy = nl80211_policy,
9348                 .flags = GENL_ADMIN_PERM,
9349                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9350                                   NL80211_FLAG_NEED_RTNL,
9351         },
9352         {
9353                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9354                 .doit = nl80211_tx_mgmt_cancel_wait,
9355                 .policy = nl80211_policy,
9356                 .flags = GENL_ADMIN_PERM,
9357                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9358                                   NL80211_FLAG_NEED_RTNL,
9359         },
9360         {
9361                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9362                 .doit = nl80211_set_power_save,
9363                 .policy = nl80211_policy,
9364                 .flags = GENL_ADMIN_PERM,
9365                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9366                                   NL80211_FLAG_NEED_RTNL,
9367         },
9368         {
9369                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9370                 .doit = nl80211_get_power_save,
9371                 .policy = nl80211_policy,
9372                 /* can be retrieved by unprivileged users */
9373                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9374                                   NL80211_FLAG_NEED_RTNL,
9375         },
9376         {
9377                 .cmd = NL80211_CMD_SET_CQM,
9378                 .doit = nl80211_set_cqm,
9379                 .policy = nl80211_policy,
9380                 .flags = GENL_ADMIN_PERM,
9381                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9382                                   NL80211_FLAG_NEED_RTNL,
9383         },
9384         {
9385                 .cmd = NL80211_CMD_SET_CHANNEL,
9386                 .doit = nl80211_set_channel,
9387                 .policy = nl80211_policy,
9388                 .flags = GENL_ADMIN_PERM,
9389                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9390                                   NL80211_FLAG_NEED_RTNL,
9391         },
9392         {
9393                 .cmd = NL80211_CMD_SET_WDS_PEER,
9394                 .doit = nl80211_set_wds_peer,
9395                 .policy = nl80211_policy,
9396                 .flags = GENL_ADMIN_PERM,
9397                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9398                                   NL80211_FLAG_NEED_RTNL,
9399         },
9400         {
9401                 .cmd = NL80211_CMD_JOIN_MESH,
9402                 .doit = nl80211_join_mesh,
9403                 .policy = nl80211_policy,
9404                 .flags = GENL_ADMIN_PERM,
9405                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9406                                   NL80211_FLAG_NEED_RTNL,
9407         },
9408         {
9409                 .cmd = NL80211_CMD_LEAVE_MESH,
9410                 .doit = nl80211_leave_mesh,
9411                 .policy = nl80211_policy,
9412                 .flags = GENL_ADMIN_PERM,
9413                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9414                                   NL80211_FLAG_NEED_RTNL,
9415         },
9416 #ifdef CONFIG_PM
9417         {
9418                 .cmd = NL80211_CMD_GET_WOWLAN,
9419                 .doit = nl80211_get_wowlan,
9420                 .policy = nl80211_policy,
9421                 /* can be retrieved by unprivileged users */
9422                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9423                                   NL80211_FLAG_NEED_RTNL,
9424         },
9425         {
9426                 .cmd = NL80211_CMD_SET_WOWLAN,
9427                 .doit = nl80211_set_wowlan,
9428                 .policy = nl80211_policy,
9429                 .flags = GENL_ADMIN_PERM,
9430                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9431                                   NL80211_FLAG_NEED_RTNL,
9432         },
9433 #endif
9434         {
9435                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9436                 .doit = nl80211_set_rekey_data,
9437                 .policy = nl80211_policy,
9438                 .flags = GENL_ADMIN_PERM,
9439                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9440                                   NL80211_FLAG_NEED_RTNL,
9441         },
9442         {
9443                 .cmd = NL80211_CMD_TDLS_MGMT,
9444                 .doit = nl80211_tdls_mgmt,
9445                 .policy = nl80211_policy,
9446                 .flags = GENL_ADMIN_PERM,
9447                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9448                                   NL80211_FLAG_NEED_RTNL,
9449         },
9450         {
9451                 .cmd = NL80211_CMD_TDLS_OPER,
9452                 .doit = nl80211_tdls_oper,
9453                 .policy = nl80211_policy,
9454                 .flags = GENL_ADMIN_PERM,
9455                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9456                                   NL80211_FLAG_NEED_RTNL,
9457         },
9458         {
9459                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9460                 .doit = nl80211_register_unexpected_frame,
9461                 .policy = nl80211_policy,
9462                 .flags = GENL_ADMIN_PERM,
9463                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9464                                   NL80211_FLAG_NEED_RTNL,
9465         },
9466         {
9467                 .cmd = NL80211_CMD_PROBE_CLIENT,
9468                 .doit = nl80211_probe_client,
9469                 .policy = nl80211_policy,
9470                 .flags = GENL_ADMIN_PERM,
9471                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9472                                   NL80211_FLAG_NEED_RTNL,
9473         },
9474         {
9475                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9476                 .doit = nl80211_register_beacons,
9477                 .policy = nl80211_policy,
9478                 .flags = GENL_ADMIN_PERM,
9479                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9480                                   NL80211_FLAG_NEED_RTNL,
9481         },
9482         {
9483                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9484                 .doit = nl80211_set_noack_map,
9485                 .policy = nl80211_policy,
9486                 .flags = GENL_ADMIN_PERM,
9487                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9488                                   NL80211_FLAG_NEED_RTNL,
9489         },
9490         {
9491                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9492                 .doit = nl80211_start_p2p_device,
9493                 .policy = nl80211_policy,
9494                 .flags = GENL_ADMIN_PERM,
9495                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9496                                   NL80211_FLAG_NEED_RTNL,
9497         },
9498         {
9499                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9500                 .doit = nl80211_stop_p2p_device,
9501                 .policy = nl80211_policy,
9502                 .flags = GENL_ADMIN_PERM,
9503                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9504                                   NL80211_FLAG_NEED_RTNL,
9505         },
9506         {
9507                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9508                 .doit = nl80211_set_mcast_rate,
9509                 .policy = nl80211_policy,
9510                 .flags = GENL_ADMIN_PERM,
9511                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9512                                   NL80211_FLAG_NEED_RTNL,
9513         },
9514         {
9515                 .cmd = NL80211_CMD_SET_MAC_ACL,
9516                 .doit = nl80211_set_mac_acl,
9517                 .policy = nl80211_policy,
9518                 .flags = GENL_ADMIN_PERM,
9519                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9520                                   NL80211_FLAG_NEED_RTNL,
9521         },
9522         {
9523                 .cmd = NL80211_CMD_RADAR_DETECT,
9524                 .doit = nl80211_start_radar_detection,
9525                 .policy = nl80211_policy,
9526                 .flags = GENL_ADMIN_PERM,
9527                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9528                                   NL80211_FLAG_NEED_RTNL,
9529         },
9530         {
9531                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9532                 .doit = nl80211_get_protocol_features,
9533                 .policy = nl80211_policy,
9534         },
9535         {
9536                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9537                 .doit = nl80211_update_ft_ies,
9538                 .policy = nl80211_policy,
9539                 .flags = GENL_ADMIN_PERM,
9540                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9541                                   NL80211_FLAG_NEED_RTNL,
9542         },
9543         {
9544                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9545                 .doit = nl80211_crit_protocol_start,
9546                 .policy = nl80211_policy,
9547                 .flags = GENL_ADMIN_PERM,
9548                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9549                                   NL80211_FLAG_NEED_RTNL,
9550         },
9551         {
9552                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9553                 .doit = nl80211_crit_protocol_stop,
9554                 .policy = nl80211_policy,
9555                 .flags = GENL_ADMIN_PERM,
9556                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9557                                   NL80211_FLAG_NEED_RTNL,
9558         },
9559         {
9560                 .cmd = NL80211_CMD_GET_COALESCE,
9561                 .doit = nl80211_get_coalesce,
9562                 .policy = nl80211_policy,
9563                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9564                                   NL80211_FLAG_NEED_RTNL,
9565         },
9566         {
9567                 .cmd = NL80211_CMD_SET_COALESCE,
9568                 .doit = nl80211_set_coalesce,
9569                 .policy = nl80211_policy,
9570                 .flags = GENL_ADMIN_PERM,
9571                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9572                                   NL80211_FLAG_NEED_RTNL,
9573         },
9574         {
9575                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9576                 .doit = nl80211_channel_switch,
9577                 .policy = nl80211_policy,
9578                 .flags = GENL_ADMIN_PERM,
9579                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9580                                   NL80211_FLAG_NEED_RTNL,
9581         },
9582 };
9583
9584 /* notification functions */
9585
9586 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9587 {
9588         struct sk_buff *msg;
9589         struct nl80211_dump_wiphy_state state = {};
9590
9591         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9592         if (!msg)
9593                 return;
9594
9595         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9596                 nlmsg_free(msg);
9597                 return;
9598         }
9599
9600         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9601                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
9602 }
9603
9604 static int nl80211_add_scan_req(struct sk_buff *msg,
9605                                 struct cfg80211_registered_device *rdev)
9606 {
9607         struct cfg80211_scan_request *req = rdev->scan_req;
9608         struct nlattr *nest;
9609         int i;
9610
9611         if (WARN_ON(!req))
9612                 return 0;
9613
9614         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9615         if (!nest)
9616                 goto nla_put_failure;
9617         for (i = 0; i < req->n_ssids; i++) {
9618                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9619                         goto nla_put_failure;
9620         }
9621         nla_nest_end(msg, nest);
9622
9623         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9624         if (!nest)
9625                 goto nla_put_failure;
9626         for (i = 0; i < req->n_channels; i++) {
9627                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9628                         goto nla_put_failure;
9629         }
9630         nla_nest_end(msg, nest);
9631
9632         if (req->ie &&
9633             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9634                 goto nla_put_failure;
9635
9636         if (req->flags)
9637                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9638
9639         return 0;
9640  nla_put_failure:
9641         return -ENOBUFS;
9642 }
9643
9644 static int nl80211_send_scan_msg(struct sk_buff *msg,
9645                                  struct cfg80211_registered_device *rdev,
9646                                  struct wireless_dev *wdev,
9647                                  u32 portid, u32 seq, int flags,
9648                                  u32 cmd)
9649 {
9650         void *hdr;
9651
9652         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9653         if (!hdr)
9654                 return -1;
9655
9656         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9657             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9658                                          wdev->netdev->ifindex)) ||
9659             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9660                 goto nla_put_failure;
9661
9662         /* ignore errors and send incomplete event anyway */
9663         nl80211_add_scan_req(msg, rdev);
9664
9665         return genlmsg_end(msg, hdr);
9666
9667  nla_put_failure:
9668         genlmsg_cancel(msg, hdr);
9669         return -EMSGSIZE;
9670 }
9671
9672 static int
9673 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9674                             struct cfg80211_registered_device *rdev,
9675                             struct net_device *netdev,
9676                             u32 portid, u32 seq, int flags, u32 cmd)
9677 {
9678         void *hdr;
9679
9680         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9681         if (!hdr)
9682                 return -1;
9683
9684         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9685             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9686                 goto nla_put_failure;
9687
9688         return genlmsg_end(msg, hdr);
9689
9690  nla_put_failure:
9691         genlmsg_cancel(msg, hdr);
9692         return -EMSGSIZE;
9693 }
9694
9695 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9696                              struct wireless_dev *wdev)
9697 {
9698         struct sk_buff *msg;
9699
9700         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9701         if (!msg)
9702                 return;
9703
9704         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9705                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9706                 nlmsg_free(msg);
9707                 return;
9708         }
9709
9710         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9711                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
9712 }
9713
9714 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9715                             struct wireless_dev *wdev)
9716 {
9717         struct sk_buff *msg;
9718
9719         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9720         if (!msg)
9721                 return;
9722
9723         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9724                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9725                 nlmsg_free(msg);
9726                 return;
9727         }
9728
9729         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9730                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
9731 }
9732
9733 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9734                                struct wireless_dev *wdev)
9735 {
9736         struct sk_buff *msg;
9737
9738         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9739         if (!msg)
9740                 return;
9741
9742         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9743                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9744                 nlmsg_free(msg);
9745                 return;
9746         }
9747
9748         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9749                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
9750 }
9751
9752 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9753                                      struct net_device *netdev)
9754 {
9755         struct sk_buff *msg;
9756
9757         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9758         if (!msg)
9759                 return;
9760
9761         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9762                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9763                 nlmsg_free(msg);
9764                 return;
9765         }
9766
9767         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9768                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
9769 }
9770
9771 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9772                              struct net_device *netdev, u32 cmd)
9773 {
9774         struct sk_buff *msg;
9775
9776         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9777         if (!msg)
9778                 return;
9779
9780         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9781                 nlmsg_free(msg);
9782                 return;
9783         }
9784
9785         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9786                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
9787 }
9788
9789 /*
9790  * This can happen on global regulatory changes or device specific settings
9791  * based on custom world regulatory domains.
9792  */
9793 void nl80211_send_reg_change_event(struct regulatory_request *request)
9794 {
9795         struct sk_buff *msg;
9796         void *hdr;
9797
9798         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9799         if (!msg)
9800                 return;
9801
9802         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9803         if (!hdr) {
9804                 nlmsg_free(msg);
9805                 return;
9806         }
9807
9808         /* Userspace can always count this one always being set */
9809         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9810                 goto nla_put_failure;
9811
9812         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9813                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9814                                NL80211_REGDOM_TYPE_WORLD))
9815                         goto nla_put_failure;
9816         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9817                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9818                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9819                         goto nla_put_failure;
9820         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9821                    request->intersect) {
9822                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9823                                NL80211_REGDOM_TYPE_INTERSECTION))
9824                         goto nla_put_failure;
9825         } else {
9826                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9827                                NL80211_REGDOM_TYPE_COUNTRY) ||
9828                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9829                                    request->alpha2))
9830                         goto nla_put_failure;
9831         }
9832
9833         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9834             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9835                 goto nla_put_failure;
9836
9837         genlmsg_end(msg, hdr);
9838
9839         rcu_read_lock();
9840         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
9841                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
9842         rcu_read_unlock();
9843
9844         return;
9845
9846 nla_put_failure:
9847         genlmsg_cancel(msg, hdr);
9848         nlmsg_free(msg);
9849 }
9850
9851 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9852                                     struct net_device *netdev,
9853                                     const u8 *buf, size_t len,
9854                                     enum nl80211_commands cmd, gfp_t gfp)
9855 {
9856         struct sk_buff *msg;
9857         void *hdr;
9858
9859         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9860         if (!msg)
9861                 return;
9862
9863         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9864         if (!hdr) {
9865                 nlmsg_free(msg);
9866                 return;
9867         }
9868
9869         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9870             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9871             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9872                 goto nla_put_failure;
9873
9874         genlmsg_end(msg, hdr);
9875
9876         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9877                                 NL80211_MCGRP_MLME, gfp);
9878         return;
9879
9880  nla_put_failure:
9881         genlmsg_cancel(msg, hdr);
9882         nlmsg_free(msg);
9883 }
9884
9885 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9886                           struct net_device *netdev, const u8 *buf,
9887                           size_t len, gfp_t gfp)
9888 {
9889         nl80211_send_mlme_event(rdev, netdev, buf, len,
9890                                 NL80211_CMD_AUTHENTICATE, gfp);
9891 }
9892
9893 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9894                            struct net_device *netdev, const u8 *buf,
9895                            size_t len, gfp_t gfp)
9896 {
9897         nl80211_send_mlme_event(rdev, netdev, buf, len,
9898                                 NL80211_CMD_ASSOCIATE, gfp);
9899 }
9900
9901 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9902                          struct net_device *netdev, const u8 *buf,
9903                          size_t len, gfp_t gfp)
9904 {
9905         nl80211_send_mlme_event(rdev, netdev, buf, len,
9906                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9907 }
9908
9909 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9910                            struct net_device *netdev, const u8 *buf,
9911                            size_t len, gfp_t gfp)
9912 {
9913         nl80211_send_mlme_event(rdev, netdev, buf, len,
9914                                 NL80211_CMD_DISASSOCIATE, gfp);
9915 }
9916
9917 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9918                                   size_t len)
9919 {
9920         struct wireless_dev *wdev = dev->ieee80211_ptr;
9921         struct wiphy *wiphy = wdev->wiphy;
9922         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9923         const struct ieee80211_mgmt *mgmt = (void *)buf;
9924         u32 cmd;
9925
9926         if (WARN_ON(len < 2))
9927                 return;
9928
9929         if (ieee80211_is_deauth(mgmt->frame_control))
9930                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9931         else
9932                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9933
9934         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9935         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9936 }
9937 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9938
9939 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9940                                       struct net_device *netdev, int cmd,
9941                                       const u8 *addr, gfp_t gfp)
9942 {
9943         struct sk_buff *msg;
9944         void *hdr;
9945
9946         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9947         if (!msg)
9948                 return;
9949
9950         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9951         if (!hdr) {
9952                 nlmsg_free(msg);
9953                 return;
9954         }
9955
9956         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9957             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9958             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9959             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9960                 goto nla_put_failure;
9961
9962         genlmsg_end(msg, hdr);
9963
9964         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
9965                                 NL80211_MCGRP_MLME, gfp);
9966         return;
9967
9968  nla_put_failure:
9969         genlmsg_cancel(msg, hdr);
9970         nlmsg_free(msg);
9971 }
9972
9973 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9974                                struct net_device *netdev, const u8 *addr,
9975                                gfp_t gfp)
9976 {
9977         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9978                                   addr, gfp);
9979 }
9980
9981 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9982                                 struct net_device *netdev, const u8 *addr,
9983                                 gfp_t gfp)
9984 {
9985         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9986                                   addr, gfp);
9987 }
9988
9989 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9990                                  struct net_device *netdev, const u8 *bssid,
9991                                  const u8 *req_ie, size_t req_ie_len,
9992                                  const u8 *resp_ie, size_t resp_ie_len,
9993                                  u16 status, gfp_t gfp)
9994 {
9995         struct sk_buff *msg;
9996         void *hdr;
9997
9998         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9999         if (!msg)
10000                 return;
10001
10002         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10003         if (!hdr) {
10004                 nlmsg_free(msg);
10005                 return;
10006         }
10007
10008         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10009             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10010             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10011             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10012             (req_ie &&
10013              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10014             (resp_ie &&
10015              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10016                 goto nla_put_failure;
10017
10018         genlmsg_end(msg, hdr);
10019
10020         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10021                                 NL80211_MCGRP_MLME, gfp);
10022         return;
10023
10024  nla_put_failure:
10025         genlmsg_cancel(msg, hdr);
10026         nlmsg_free(msg);
10027
10028 }
10029
10030 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10031                          struct net_device *netdev, const u8 *bssid,
10032                          const u8 *req_ie, size_t req_ie_len,
10033                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10034 {
10035         struct sk_buff *msg;
10036         void *hdr;
10037
10038         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10039         if (!msg)
10040                 return;
10041
10042         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10043         if (!hdr) {
10044                 nlmsg_free(msg);
10045                 return;
10046         }
10047
10048         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10049             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10050             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10051             (req_ie &&
10052              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10053             (resp_ie &&
10054              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10055                 goto nla_put_failure;
10056
10057         genlmsg_end(msg, hdr);
10058
10059         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10060                                 NL80211_MCGRP_MLME, gfp);
10061         return;
10062
10063  nla_put_failure:
10064         genlmsg_cancel(msg, hdr);
10065         nlmsg_free(msg);
10066
10067 }
10068
10069 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10070                                struct net_device *netdev, u16 reason,
10071                                const u8 *ie, size_t ie_len, bool from_ap)
10072 {
10073         struct sk_buff *msg;
10074         void *hdr;
10075
10076         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10077         if (!msg)
10078                 return;
10079
10080         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10081         if (!hdr) {
10082                 nlmsg_free(msg);
10083                 return;
10084         }
10085
10086         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10087             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10088             (from_ap && reason &&
10089              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10090             (from_ap &&
10091              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10092             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10093                 goto nla_put_failure;
10094
10095         genlmsg_end(msg, hdr);
10096
10097         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10098                                 NL80211_MCGRP_MLME, GFP_KERNEL);
10099         return;
10100
10101  nla_put_failure:
10102         genlmsg_cancel(msg, hdr);
10103         nlmsg_free(msg);
10104
10105 }
10106
10107 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10108                              struct net_device *netdev, const u8 *bssid,
10109                              gfp_t gfp)
10110 {
10111         struct sk_buff *msg;
10112         void *hdr;
10113
10114         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10115         if (!msg)
10116                 return;
10117
10118         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10119         if (!hdr) {
10120                 nlmsg_free(msg);
10121                 return;
10122         }
10123
10124         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10125             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10126             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10127                 goto nla_put_failure;
10128
10129         genlmsg_end(msg, hdr);
10130
10131         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10132                                 NL80211_MCGRP_MLME, gfp);
10133         return;
10134
10135  nla_put_failure:
10136         genlmsg_cancel(msg, hdr);
10137         nlmsg_free(msg);
10138 }
10139
10140 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10141                                         const u8* ie, u8 ie_len, gfp_t gfp)
10142 {
10143         struct wireless_dev *wdev = dev->ieee80211_ptr;
10144         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10145         struct sk_buff *msg;
10146         void *hdr;
10147
10148         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10149                 return;
10150
10151         trace_cfg80211_notify_new_peer_candidate(dev, addr);
10152
10153         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10154         if (!msg)
10155                 return;
10156
10157         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10158         if (!hdr) {
10159                 nlmsg_free(msg);
10160                 return;
10161         }
10162
10163         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10164             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10165             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10166             (ie_len && ie &&
10167              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10168                 goto nla_put_failure;
10169
10170         genlmsg_end(msg, hdr);
10171
10172         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10173                                 NL80211_MCGRP_MLME, gfp);
10174         return;
10175
10176  nla_put_failure:
10177         genlmsg_cancel(msg, hdr);
10178         nlmsg_free(msg);
10179 }
10180 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10181
10182 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10183                                  struct net_device *netdev, const u8 *addr,
10184                                  enum nl80211_key_type key_type, int key_id,
10185                                  const u8 *tsc, gfp_t gfp)
10186 {
10187         struct sk_buff *msg;
10188         void *hdr;
10189
10190         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10191         if (!msg)
10192                 return;
10193
10194         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10195         if (!hdr) {
10196                 nlmsg_free(msg);
10197                 return;
10198         }
10199
10200         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10201             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10202             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10203             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10204             (key_id != -1 &&
10205              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10206             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10207                 goto nla_put_failure;
10208
10209         genlmsg_end(msg, hdr);
10210
10211         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10212                                 NL80211_MCGRP_MLME, gfp);
10213         return;
10214
10215  nla_put_failure:
10216         genlmsg_cancel(msg, hdr);
10217         nlmsg_free(msg);
10218 }
10219
10220 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10221                                     struct ieee80211_channel *channel_before,
10222                                     struct ieee80211_channel *channel_after)
10223 {
10224         struct sk_buff *msg;
10225         void *hdr;
10226         struct nlattr *nl_freq;
10227
10228         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10229         if (!msg)
10230                 return;
10231
10232         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10233         if (!hdr) {
10234                 nlmsg_free(msg);
10235                 return;
10236         }
10237
10238         /*
10239          * Since we are applying the beacon hint to a wiphy we know its
10240          * wiphy_idx is valid
10241          */
10242         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10243                 goto nla_put_failure;
10244
10245         /* Before */
10246         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10247         if (!nl_freq)
10248                 goto nla_put_failure;
10249         if (nl80211_msg_put_channel(msg, channel_before, false))
10250                 goto nla_put_failure;
10251         nla_nest_end(msg, nl_freq);
10252
10253         /* After */
10254         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10255         if (!nl_freq)
10256                 goto nla_put_failure;
10257         if (nl80211_msg_put_channel(msg, channel_after, false))
10258                 goto nla_put_failure;
10259         nla_nest_end(msg, nl_freq);
10260
10261         genlmsg_end(msg, hdr);
10262
10263         rcu_read_lock();
10264         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10265                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10266         rcu_read_unlock();
10267
10268         return;
10269
10270 nla_put_failure:
10271         genlmsg_cancel(msg, hdr);
10272         nlmsg_free(msg);
10273 }
10274
10275 static void nl80211_send_remain_on_chan_event(
10276         int cmd, struct cfg80211_registered_device *rdev,
10277         struct wireless_dev *wdev, u64 cookie,
10278         struct ieee80211_channel *chan,
10279         unsigned int duration, gfp_t gfp)
10280 {
10281         struct sk_buff *msg;
10282         void *hdr;
10283
10284         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10285         if (!msg)
10286                 return;
10287
10288         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10289         if (!hdr) {
10290                 nlmsg_free(msg);
10291                 return;
10292         }
10293
10294         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10295             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10296                                          wdev->netdev->ifindex)) ||
10297             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10298             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10299             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10300                         NL80211_CHAN_NO_HT) ||
10301             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10302                 goto nla_put_failure;
10303
10304         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10305             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10306                 goto nla_put_failure;
10307
10308         genlmsg_end(msg, hdr);
10309
10310         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10311                                 NL80211_MCGRP_MLME, gfp);
10312         return;
10313
10314  nla_put_failure:
10315         genlmsg_cancel(msg, hdr);
10316         nlmsg_free(msg);
10317 }
10318
10319 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10320                                struct ieee80211_channel *chan,
10321                                unsigned int duration, gfp_t gfp)
10322 {
10323         struct wiphy *wiphy = wdev->wiphy;
10324         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10325
10326         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10327         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10328                                           rdev, wdev, cookie, chan,
10329                                           duration, gfp);
10330 }
10331 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10332
10333 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10334                                         struct ieee80211_channel *chan,
10335                                         gfp_t gfp)
10336 {
10337         struct wiphy *wiphy = wdev->wiphy;
10338         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10339
10340         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10341         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10342                                           rdev, wdev, cookie, chan, 0, gfp);
10343 }
10344 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10345
10346 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10347                       struct station_info *sinfo, gfp_t gfp)
10348 {
10349         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10350         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10351         struct sk_buff *msg;
10352
10353         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10354
10355         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10356         if (!msg)
10357                 return;
10358
10359         if (nl80211_send_station(msg, 0, 0, 0,
10360                                  rdev, dev, mac_addr, sinfo) < 0) {
10361                 nlmsg_free(msg);
10362                 return;
10363         }
10364
10365         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10366                                 NL80211_MCGRP_MLME, gfp);
10367 }
10368 EXPORT_SYMBOL(cfg80211_new_sta);
10369
10370 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10371 {
10372         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10373         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10374         struct sk_buff *msg;
10375         void *hdr;
10376
10377         trace_cfg80211_del_sta(dev, mac_addr);
10378
10379         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10380         if (!msg)
10381                 return;
10382
10383         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10384         if (!hdr) {
10385                 nlmsg_free(msg);
10386                 return;
10387         }
10388
10389         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10390             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10391                 goto nla_put_failure;
10392
10393         genlmsg_end(msg, hdr);
10394
10395         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10396                                 NL80211_MCGRP_MLME, gfp);
10397         return;
10398
10399  nla_put_failure:
10400         genlmsg_cancel(msg, hdr);
10401         nlmsg_free(msg);
10402 }
10403 EXPORT_SYMBOL(cfg80211_del_sta);
10404
10405 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10406                           enum nl80211_connect_failed_reason reason,
10407                           gfp_t gfp)
10408 {
10409         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10410         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10411         struct sk_buff *msg;
10412         void *hdr;
10413
10414         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10415         if (!msg)
10416                 return;
10417
10418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10419         if (!hdr) {
10420                 nlmsg_free(msg);
10421                 return;
10422         }
10423
10424         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10425             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10426             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
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 EXPORT_SYMBOL(cfg80211_conn_failed);
10440
10441 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10442                                        const u8 *addr, gfp_t gfp)
10443 {
10444         struct wireless_dev *wdev = dev->ieee80211_ptr;
10445         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10446         struct sk_buff *msg;
10447         void *hdr;
10448         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10449
10450         if (!nlportid)
10451                 return false;
10452
10453         msg = nlmsg_new(100, gfp);
10454         if (!msg)
10455                 return true;
10456
10457         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10458         if (!hdr) {
10459                 nlmsg_free(msg);
10460                 return true;
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                 goto nla_put_failure;
10467
10468         genlmsg_end(msg, hdr);
10469         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10470         return true;
10471
10472  nla_put_failure:
10473         genlmsg_cancel(msg, hdr);
10474         nlmsg_free(msg);
10475         return true;
10476 }
10477
10478 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10479                                 const u8 *addr, gfp_t gfp)
10480 {
10481         struct wireless_dev *wdev = dev->ieee80211_ptr;
10482         bool ret;
10483
10484         trace_cfg80211_rx_spurious_frame(dev, addr);
10485
10486         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10487                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10488                 trace_cfg80211_return_bool(false);
10489                 return false;
10490         }
10491         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10492                                          addr, gfp);
10493         trace_cfg80211_return_bool(ret);
10494         return ret;
10495 }
10496 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10497
10498 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10499                                         const u8 *addr, gfp_t gfp)
10500 {
10501         struct wireless_dev *wdev = dev->ieee80211_ptr;
10502         bool ret;
10503
10504         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10505
10506         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10507                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10508                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10509                 trace_cfg80211_return_bool(false);
10510                 return false;
10511         }
10512         ret = __nl80211_unexpected_frame(dev,
10513                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10514                                          addr, gfp);
10515         trace_cfg80211_return_bool(ret);
10516         return ret;
10517 }
10518 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10519
10520 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10521                       struct wireless_dev *wdev, u32 nlportid,
10522                       int freq, int sig_dbm,
10523                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
10524 {
10525         struct net_device *netdev = wdev->netdev;
10526         struct sk_buff *msg;
10527         void *hdr;
10528
10529         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10530         if (!msg)
10531                 return -ENOMEM;
10532
10533         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10534         if (!hdr) {
10535                 nlmsg_free(msg);
10536                 return -ENOMEM;
10537         }
10538
10539         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10540             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10541                                         netdev->ifindex)) ||
10542             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10543             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10544             (sig_dbm &&
10545              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10546             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10547             (flags &&
10548              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
10549                 goto nla_put_failure;
10550
10551         genlmsg_end(msg, hdr);
10552
10553         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10554
10555  nla_put_failure:
10556         genlmsg_cancel(msg, hdr);
10557         nlmsg_free(msg);
10558         return -ENOBUFS;
10559 }
10560
10561 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10562                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10563 {
10564         struct wiphy *wiphy = wdev->wiphy;
10565         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10566         struct net_device *netdev = wdev->netdev;
10567         struct sk_buff *msg;
10568         void *hdr;
10569
10570         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10571
10572         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10573         if (!msg)
10574                 return;
10575
10576         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10577         if (!hdr) {
10578                 nlmsg_free(msg);
10579                 return;
10580         }
10581
10582         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10583             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10584                                    netdev->ifindex)) ||
10585             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10586             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10587             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10588             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10589                 goto nla_put_failure;
10590
10591         genlmsg_end(msg, hdr);
10592
10593         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10594                                 NL80211_MCGRP_MLME, gfp);
10595         return;
10596
10597  nla_put_failure:
10598         genlmsg_cancel(msg, hdr);
10599         nlmsg_free(msg);
10600 }
10601 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10602
10603 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10604                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10605                               gfp_t gfp)
10606 {
10607         struct wireless_dev *wdev = dev->ieee80211_ptr;
10608         struct wiphy *wiphy = wdev->wiphy;
10609         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10610         struct sk_buff *msg;
10611         struct nlattr *pinfoattr;
10612         void *hdr;
10613
10614         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10615
10616         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10617         if (!msg)
10618                 return;
10619
10620         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10621         if (!hdr) {
10622                 nlmsg_free(msg);
10623                 return;
10624         }
10625
10626         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10627             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10628                 goto nla_put_failure;
10629
10630         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10631         if (!pinfoattr)
10632                 goto nla_put_failure;
10633
10634         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10635                         rssi_event))
10636                 goto nla_put_failure;
10637
10638         nla_nest_end(msg, pinfoattr);
10639
10640         genlmsg_end(msg, hdr);
10641
10642         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10643                                 NL80211_MCGRP_MLME, gfp);
10644         return;
10645
10646  nla_put_failure:
10647         genlmsg_cancel(msg, hdr);
10648         nlmsg_free(msg);
10649 }
10650 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10651
10652 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10653                                      struct net_device *netdev, const u8 *bssid,
10654                                      const u8 *replay_ctr, gfp_t gfp)
10655 {
10656         struct sk_buff *msg;
10657         struct nlattr *rekey_attr;
10658         void *hdr;
10659
10660         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10661         if (!msg)
10662                 return;
10663
10664         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10665         if (!hdr) {
10666                 nlmsg_free(msg);
10667                 return;
10668         }
10669
10670         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10671             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10672             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10673                 goto nla_put_failure;
10674
10675         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10676         if (!rekey_attr)
10677                 goto nla_put_failure;
10678
10679         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10680                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10681                 goto nla_put_failure;
10682
10683         nla_nest_end(msg, rekey_attr);
10684
10685         genlmsg_end(msg, hdr);
10686
10687         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10688                                 NL80211_MCGRP_MLME, gfp);
10689         return;
10690
10691  nla_put_failure:
10692         genlmsg_cancel(msg, hdr);
10693         nlmsg_free(msg);
10694 }
10695
10696 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10697                                const u8 *replay_ctr, gfp_t gfp)
10698 {
10699         struct wireless_dev *wdev = dev->ieee80211_ptr;
10700         struct wiphy *wiphy = wdev->wiphy;
10701         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10702
10703         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10704         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10705 }
10706 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10707
10708 static void
10709 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10710                                struct net_device *netdev, int index,
10711                                const u8 *bssid, bool preauth, gfp_t gfp)
10712 {
10713         struct sk_buff *msg;
10714         struct nlattr *attr;
10715         void *hdr;
10716
10717         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10718         if (!msg)
10719                 return;
10720
10721         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10722         if (!hdr) {
10723                 nlmsg_free(msg);
10724                 return;
10725         }
10726
10727         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10728             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10729                 goto nla_put_failure;
10730
10731         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10732         if (!attr)
10733                 goto nla_put_failure;
10734
10735         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10736             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10737             (preauth &&
10738              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10739                 goto nla_put_failure;
10740
10741         nla_nest_end(msg, attr);
10742
10743         genlmsg_end(msg, hdr);
10744
10745         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10746                                 NL80211_MCGRP_MLME, gfp);
10747         return;
10748
10749  nla_put_failure:
10750         genlmsg_cancel(msg, hdr);
10751         nlmsg_free(msg);
10752 }
10753
10754 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10755                                      const u8 *bssid, bool preauth, gfp_t gfp)
10756 {
10757         struct wireless_dev *wdev = dev->ieee80211_ptr;
10758         struct wiphy *wiphy = wdev->wiphy;
10759         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10760
10761         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10762         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10763 }
10764 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10765
10766 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10767                                      struct net_device *netdev,
10768                                      struct cfg80211_chan_def *chandef,
10769                                      gfp_t gfp)
10770 {
10771         struct sk_buff *msg;
10772         void *hdr;
10773
10774         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10775         if (!msg)
10776                 return;
10777
10778         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10779         if (!hdr) {
10780                 nlmsg_free(msg);
10781                 return;
10782         }
10783
10784         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10785                 goto nla_put_failure;
10786
10787         if (nl80211_send_chandef(msg, chandef))
10788                 goto nla_put_failure;
10789
10790         genlmsg_end(msg, hdr);
10791
10792         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10793                                 NL80211_MCGRP_MLME, gfp);
10794         return;
10795
10796  nla_put_failure:
10797         genlmsg_cancel(msg, hdr);
10798         nlmsg_free(msg);
10799 }
10800
10801 void cfg80211_ch_switch_notify(struct net_device *dev,
10802                                struct cfg80211_chan_def *chandef)
10803 {
10804         struct wireless_dev *wdev = dev->ieee80211_ptr;
10805         struct wiphy *wiphy = wdev->wiphy;
10806         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10807
10808         trace_cfg80211_ch_switch_notify(dev, chandef);
10809
10810         wdev_lock(wdev);
10811
10812         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10813                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10814                     wdev->iftype != NL80211_IFTYPE_ADHOC &&
10815                     wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10816                 goto out;
10817
10818         wdev->channel = chandef->chan;
10819         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10820 out:
10821         wdev_unlock(wdev);
10822         return;
10823 }
10824 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10825
10826 void cfg80211_cqm_txe_notify(struct net_device *dev,
10827                              const u8 *peer, u32 num_packets,
10828                              u32 rate, u32 intvl, gfp_t gfp)
10829 {
10830         struct wireless_dev *wdev = dev->ieee80211_ptr;
10831         struct wiphy *wiphy = wdev->wiphy;
10832         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10833         struct sk_buff *msg;
10834         struct nlattr *pinfoattr;
10835         void *hdr;
10836
10837         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10838         if (!msg)
10839                 return;
10840
10841         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10842         if (!hdr) {
10843                 nlmsg_free(msg);
10844                 return;
10845         }
10846
10847         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10848             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10849             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10850                 goto nla_put_failure;
10851
10852         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10853         if (!pinfoattr)
10854                 goto nla_put_failure;
10855
10856         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10857                 goto nla_put_failure;
10858
10859         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10860                 goto nla_put_failure;
10861
10862         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10863                 goto nla_put_failure;
10864
10865         nla_nest_end(msg, pinfoattr);
10866
10867         genlmsg_end(msg, hdr);
10868
10869         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10870                                 NL80211_MCGRP_MLME, gfp);
10871         return;
10872
10873  nla_put_failure:
10874         genlmsg_cancel(msg, hdr);
10875         nlmsg_free(msg);
10876 }
10877 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10878
10879 void
10880 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10881                      struct cfg80211_chan_def *chandef,
10882                      enum nl80211_radar_event event,
10883                      struct net_device *netdev, gfp_t gfp)
10884 {
10885         struct sk_buff *msg;
10886         void *hdr;
10887
10888         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10889         if (!msg)
10890                 return;
10891
10892         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10893         if (!hdr) {
10894                 nlmsg_free(msg);
10895                 return;
10896         }
10897
10898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10899                 goto nla_put_failure;
10900
10901         /* NOP and radar events don't need a netdev parameter */
10902         if (netdev) {
10903                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10904
10905                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10906                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10907                         goto nla_put_failure;
10908         }
10909
10910         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10911                 goto nla_put_failure;
10912
10913         if (nl80211_send_chandef(msg, chandef))
10914                 goto nla_put_failure;
10915
10916         genlmsg_end(msg, hdr);
10917
10918         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10919                                 NL80211_MCGRP_MLME, gfp);
10920         return;
10921
10922  nla_put_failure:
10923         genlmsg_cancel(msg, hdr);
10924         nlmsg_free(msg);
10925 }
10926
10927 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10928                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10929 {
10930         struct wireless_dev *wdev = dev->ieee80211_ptr;
10931         struct wiphy *wiphy = wdev->wiphy;
10932         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10933         struct sk_buff *msg;
10934         struct nlattr *pinfoattr;
10935         void *hdr;
10936
10937         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10938
10939         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10940         if (!msg)
10941                 return;
10942
10943         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10944         if (!hdr) {
10945                 nlmsg_free(msg);
10946                 return;
10947         }
10948
10949         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10950             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10951             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10952                 goto nla_put_failure;
10953
10954         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10955         if (!pinfoattr)
10956                 goto nla_put_failure;
10957
10958         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10959                 goto nla_put_failure;
10960
10961         nla_nest_end(msg, pinfoattr);
10962
10963         genlmsg_end(msg, hdr);
10964
10965         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10966                                 NL80211_MCGRP_MLME, gfp);
10967         return;
10968
10969  nla_put_failure:
10970         genlmsg_cancel(msg, hdr);
10971         nlmsg_free(msg);
10972 }
10973 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10974
10975 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10976                            u64 cookie, bool acked, gfp_t gfp)
10977 {
10978         struct wireless_dev *wdev = dev->ieee80211_ptr;
10979         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10980         struct sk_buff *msg;
10981         void *hdr;
10982
10983         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10984
10985         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10986
10987         if (!msg)
10988                 return;
10989
10990         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10991         if (!hdr) {
10992                 nlmsg_free(msg);
10993                 return;
10994         }
10995
10996         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10997             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10998             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10999             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11000             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11001                 goto nla_put_failure;
11002
11003         genlmsg_end(msg, hdr);
11004
11005         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11006                                 NL80211_MCGRP_MLME, gfp);
11007         return;
11008
11009  nla_put_failure:
11010         genlmsg_cancel(msg, hdr);
11011         nlmsg_free(msg);
11012 }
11013 EXPORT_SYMBOL(cfg80211_probe_status);
11014
11015 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11016                                  const u8 *frame, size_t len,
11017                                  int freq, int sig_dbm)
11018 {
11019         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11020         struct sk_buff *msg;
11021         void *hdr;
11022         struct cfg80211_beacon_registration *reg;
11023
11024         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11025
11026         spin_lock_bh(&rdev->beacon_registrations_lock);
11027         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11028                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11029                 if (!msg) {
11030                         spin_unlock_bh(&rdev->beacon_registrations_lock);
11031                         return;
11032                 }
11033
11034                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11035                 if (!hdr)
11036                         goto nla_put_failure;
11037
11038                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11039                     (freq &&
11040                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11041                     (sig_dbm &&
11042                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11043                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11044                         goto nla_put_failure;
11045
11046                 genlmsg_end(msg, hdr);
11047
11048                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11049         }
11050         spin_unlock_bh(&rdev->beacon_registrations_lock);
11051         return;
11052
11053  nla_put_failure:
11054         spin_unlock_bh(&rdev->beacon_registrations_lock);
11055         if (hdr)
11056                 genlmsg_cancel(msg, hdr);
11057         nlmsg_free(msg);
11058 }
11059 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11060
11061 #ifdef CONFIG_PM
11062 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11063                                    struct cfg80211_wowlan_wakeup *wakeup,
11064                                    gfp_t gfp)
11065 {
11066         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11067         struct sk_buff *msg;
11068         void *hdr;
11069         int size = 200;
11070
11071         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11072
11073         if (wakeup)
11074                 size += wakeup->packet_present_len;
11075
11076         msg = nlmsg_new(size, gfp);
11077         if (!msg)
11078                 return;
11079
11080         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11081         if (!hdr)
11082                 goto free_msg;
11083
11084         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11085             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11086                 goto free_msg;
11087
11088         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11089                                         wdev->netdev->ifindex))
11090                 goto free_msg;
11091
11092         if (wakeup) {
11093                 struct nlattr *reasons;
11094
11095                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11096
11097                 if (wakeup->disconnect &&
11098                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11099                         goto free_msg;
11100                 if (wakeup->magic_pkt &&
11101                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11102                         goto free_msg;
11103                 if (wakeup->gtk_rekey_failure &&
11104                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11105                         goto free_msg;
11106                 if (wakeup->eap_identity_req &&
11107                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11108                         goto free_msg;
11109                 if (wakeup->four_way_handshake &&
11110                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11111                         goto free_msg;
11112                 if (wakeup->rfkill_release &&
11113                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11114                         goto free_msg;
11115
11116                 if (wakeup->pattern_idx >= 0 &&
11117                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11118                                 wakeup->pattern_idx))
11119                         goto free_msg;
11120
11121                 if (wakeup->tcp_match)
11122                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11123
11124                 if (wakeup->tcp_connlost)
11125                         nla_put_flag(msg,
11126                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11127
11128                 if (wakeup->tcp_nomoretokens)
11129                         nla_put_flag(msg,
11130                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11131
11132                 if (wakeup->packet) {
11133                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11134                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11135
11136                         if (!wakeup->packet_80211) {
11137                                 pkt_attr =
11138                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11139                                 len_attr =
11140                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11141                         }
11142
11143                         if (wakeup->packet_len &&
11144                             nla_put_u32(msg, len_attr, wakeup->packet_len))
11145                                 goto free_msg;
11146
11147                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11148                                     wakeup->packet))
11149                                 goto free_msg;
11150                 }
11151
11152                 nla_nest_end(msg, reasons);
11153         }
11154
11155         genlmsg_end(msg, hdr);
11156
11157         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11158                                 NL80211_MCGRP_MLME, gfp);
11159         return;
11160
11161  free_msg:
11162         nlmsg_free(msg);
11163 }
11164 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11165 #endif
11166
11167 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11168                                 enum nl80211_tdls_operation oper,
11169                                 u16 reason_code, gfp_t gfp)
11170 {
11171         struct wireless_dev *wdev = dev->ieee80211_ptr;
11172         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11173         struct sk_buff *msg;
11174         void *hdr;
11175
11176         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11177                                          reason_code);
11178
11179         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11180         if (!msg)
11181                 return;
11182
11183         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
11184         if (!hdr) {
11185                 nlmsg_free(msg);
11186                 return;
11187         }
11188
11189         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11190             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11191             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11192             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11193             (reason_code > 0 &&
11194              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11195                 goto nla_put_failure;
11196
11197         genlmsg_end(msg, hdr);
11198
11199         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11200                                 NL80211_MCGRP_MLME, gfp);
11201         return;
11202
11203  nla_put_failure:
11204         genlmsg_cancel(msg, hdr);
11205         nlmsg_free(msg);
11206 }
11207 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11208
11209 static int nl80211_netlink_notify(struct notifier_block * nb,
11210                                   unsigned long state,
11211                                   void *_notify)
11212 {
11213         struct netlink_notify *notify = _notify;
11214         struct cfg80211_registered_device *rdev;
11215         struct wireless_dev *wdev;
11216         struct cfg80211_beacon_registration *reg, *tmp;
11217
11218         if (state != NETLINK_URELEASE)
11219                 return NOTIFY_DONE;
11220
11221         rcu_read_lock();
11222
11223         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11224                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11225                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11226
11227                 spin_lock_bh(&rdev->beacon_registrations_lock);
11228                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11229                                          list) {
11230                         if (reg->nlportid == notify->portid) {
11231                                 list_del(&reg->list);
11232                                 kfree(reg);
11233                                 break;
11234                         }
11235                 }
11236                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11237         }
11238
11239         rcu_read_unlock();
11240
11241         return NOTIFY_DONE;
11242 }
11243
11244 static struct notifier_block nl80211_netlink_notifier = {
11245         .notifier_call = nl80211_netlink_notify,
11246 };
11247
11248 void cfg80211_ft_event(struct net_device *netdev,
11249                        struct cfg80211_ft_event_params *ft_event)
11250 {
11251         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11252         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11253         struct sk_buff *msg;
11254         void *hdr;
11255
11256         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11257
11258         if (!ft_event->target_ap)
11259                 return;
11260
11261         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11262         if (!msg)
11263                 return;
11264
11265         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11266         if (!hdr) {
11267                 nlmsg_free(msg);
11268                 return;
11269         }
11270
11271         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11272         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11273         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11274         if (ft_event->ies)
11275                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11276         if (ft_event->ric_ies)
11277                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11278                         ft_event->ric_ies);
11279
11280         genlmsg_end(msg, hdr);
11281
11282         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11283                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11284 }
11285 EXPORT_SYMBOL(cfg80211_ft_event);
11286
11287 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11288 {
11289         struct cfg80211_registered_device *rdev;
11290         struct sk_buff *msg;
11291         void *hdr;
11292         u32 nlportid;
11293
11294         rdev = wiphy_to_dev(wdev->wiphy);
11295         if (!rdev->crit_proto_nlportid)
11296                 return;
11297
11298         nlportid = rdev->crit_proto_nlportid;
11299         rdev->crit_proto_nlportid = 0;
11300
11301         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11302         if (!msg)
11303                 return;
11304
11305         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11306         if (!hdr)
11307                 goto nla_put_failure;
11308
11309         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11310             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11311                 goto nla_put_failure;
11312
11313         genlmsg_end(msg, hdr);
11314
11315         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11316         return;
11317
11318  nla_put_failure:
11319         if (hdr)
11320                 genlmsg_cancel(msg, hdr);
11321         nlmsg_free(msg);
11322
11323 }
11324 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11325
11326 /* initialisation/exit functions */
11327
11328 int nl80211_init(void)
11329 {
11330         int err;
11331
11332         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
11333                                                    nl80211_mcgrps);
11334         if (err)
11335                 return err;
11336
11337         err = netlink_register_notifier(&nl80211_netlink_notifier);
11338         if (err)
11339                 goto err_out;
11340
11341         return 0;
11342  err_out:
11343         genl_unregister_family(&nl80211_fam);
11344         return err;
11345 }
11346
11347 void nl80211_exit(void)
11348 {
11349         netlink_unregister_notifier(&nl80211_netlink_notifier);
11350         genl_unregister_family(&nl80211_fam);
11351 }