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(struct genl_ops *ops, struct sk_buff *skb,
  34                             struct genl_info *info);
  35 static void nl80211_post_doit(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 /* returns ERR_PTR values */
  51 static struct wireless_dev *
  52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  53 {
  54         struct cfg80211_registered_device *rdev;
  55         struct wireless_dev *result = NULL;
  56         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  57         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  58         u64 wdev_id;
  59         int wiphy_idx = -1;
  60         int ifidx = -1;
  61
  62         ASSERT_RTNL();
  63
  64         if (!have_ifidx && !have_wdev_id)
  65                 return ERR_PTR(-EINVAL);
  66
  67         if (have_ifidx)
  68                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  69         if (have_wdev_id) {
  70                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  71                 wiphy_idx = wdev_id >> 32;
  72         }
  73
  74         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  75                 struct wireless_dev *wdev;
  76
  77                 if (wiphy_net(&rdev->wiphy) != netns)
  78                         continue;
  79
  80                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  81                         continue;
  82
  83                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
  84                         if (have_ifidx && wdev->netdev &&
  85                             wdev->netdev->ifindex == ifidx) {
  86                                 result = wdev;
  87                                 break;
  88                         }
  89                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  90                                 result = wdev;
  91                                 break;
  92                         }
  93                 }
  94
  95                 if (result)
  96                         break;
  97         }
  98
  99         if (result)
 100                 return result;
 101         return ERR_PTR(-ENODEV);
 102 }
 103
 104 static struct cfg80211_registered_device *
 105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 106 {
 107         struct cfg80211_registered_device *rdev = NULL, *tmp;
 108         struct net_device *netdev;
 109
 110         ASSERT_RTNL();
 111
 112         if (!attrs[NL80211_ATTR_WIPHY] &&
 113             !attrs[NL80211_ATTR_IFINDEX] &&
 114             !attrs[NL80211_ATTR_WDEV])
 115                 return ERR_PTR(-EINVAL);
 116
 117         if (attrs[NL80211_ATTR_WIPHY])
 118                 rdev = cfg80211_rdev_by_wiphy_idx(
 119                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 120
 121         if (attrs[NL80211_ATTR_WDEV]) {
 122                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 123                 struct wireless_dev *wdev;
 124                 bool found = false;
 125
 126                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 127                 if (tmp) {
 128                         /* make sure wdev exists */
 129                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 130                                 if (wdev->identifier != (u32)wdev_id)
 131                                         continue;
 132                                 found = true;
 133                                 break;
 134                         }
 135
 136                         if (!found)
 137                                 tmp = NULL;
 138
 139                         if (rdev && tmp != rdev)
 140                                 return ERR_PTR(-EINVAL);
 141                         rdev = tmp;
 142                 }
 143         }
 144
 145         if (attrs[NL80211_ATTR_IFINDEX]) {
 146                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 147                 netdev = dev_get_by_index(netns, ifindex);
 148                 if (netdev) {
 149                         if (netdev->ieee80211_ptr)
 150                                 tmp = wiphy_to_dev(
 151                                                 netdev->ieee80211_ptr->wiphy);
 152                         else
 153                                 tmp = NULL;
 154
 155                         dev_put(netdev);
 156
 157                         /* not wireless device -- return error */
 158                         if (!tmp)
 159                                 return ERR_PTR(-EINVAL);
 160
 161                         /* mismatch -- return error */
 162                         if (rdev && tmp != rdev)
 163                                 return ERR_PTR(-EINVAL);
 164
 165                         rdev = tmp;
 166                 }
 167         }
 168
 169         if (!rdev)
 170                 return ERR_PTR(-ENODEV);
 171
 172         if (netns != wiphy_net(&rdev->wiphy))
 173                 return ERR_PTR(-ENODEV);
 174
 175         return rdev;
 176 }
 177
 178 /*
 179  * This function returns a pointer to the driver
 180  * that the genl_info item that is passed refers to.
 181  *
 182  * The result of this can be a PTR_ERR and hence must
 183  * be checked with IS_ERR() for errors.
 184  */
 185 static struct cfg80211_registered_device *
 186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 187 {
 188         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 189 }
 190
 191 /* policy for the attributes */
 192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 193         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 194         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 195                                       .len = 20-1 },
 196         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 197
 198         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 199         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 200         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 201         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 202         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 203
 204         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 205         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 206         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 207         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 208         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 209
 210         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 211         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 212         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 213
 214         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 215         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 216
 217         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 218         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 219                                     .len = WLAN_MAX_KEY_LEN },
 220         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 221         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 222         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 223         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 224         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 225
 226         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 227         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 229                                        .len = IEEE80211_MAX_DATA_LEN },
 230         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 231                                        .len = IEEE80211_MAX_DATA_LEN },
 232         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 233         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 234         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 235         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 236                                                .len = NL80211_MAX_SUPP_RATES },
 237         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 238         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 239         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 240         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 241                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 242         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 243
 244         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 245         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 246
 247         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 248         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 249         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 250         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 251                                            .len = NL80211_MAX_SUPP_RATES },
 252         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 253
 254         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 256
 257         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 258
 259         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 261                               .len = IEEE80211_MAX_DATA_LEN },
 262         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 263         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 264
 265         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 266                                 .len = IEEE80211_MAX_SSID_LEN },
 267         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 268         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 269         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 270         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 271         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 272         [NL80211_ATTR_STA_FLAGS2] = {
 273                 .len = sizeof(struct nl80211_sta_flag_update),
 274         },
 275         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 276         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 277         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 278         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 279         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 280         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 281         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 282         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 283         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 284                                  .len = WLAN_PMKID_LEN },
 285         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 286         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 287         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 288         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 289                                  .len = IEEE80211_MAX_DATA_LEN },
 290         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 291         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 292         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 293         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 294         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 295         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 296         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 297         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 300         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 301         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 302         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 303         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 304         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 305         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 306         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 307         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 308         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 309         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 310                                          .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 312                                          .len = IEEE80211_MAX_DATA_LEN },
 313         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 314         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 315         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 316         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 317         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 318         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 319         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 320         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 321         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 322         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 323                                       .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 325         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 326         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 327                 .len = NL80211_HT_CAPABILITY_LEN
 328         },
 329         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 330         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 331         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 332         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 333         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 334         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 335         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 336         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 337         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 338         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 339         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 340         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 341         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 342         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 343         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 344         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 346                 .len = NL80211_VHT_CAPABILITY_LEN,
 347         },
 348         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 349         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 350                                   .len = IEEE80211_MAX_DATA_LEN },
 351         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 352 };
 353
 354 /* policy for the key attributes */
 355 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 356         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 357         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 358         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 359         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 360         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 361         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 362         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 363         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 364 };
 365
 366 /* policy for the key default flags */
 367 static const struct nla_policy
 368 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 369         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 370         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 371 };
 372
 373 /* policy for WoWLAN attributes */
 374 static const struct nla_policy
 375 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 376         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 377         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 378         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 379         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 380         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 381         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 382         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 383         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 384         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 385 };
 386
 387 static const struct nla_policy
 388 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 389         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 390         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 391         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 392         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 393         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 394         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 395         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 396                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 397         },
 398         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 399                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 400         },
 401         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 402         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 403         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 404 };
 405
 406 /* policy for GTK rekey offload attributes */
 407 static const struct nla_policy
 408 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 409         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 410         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 411         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 412 };
 413
 414 static const struct nla_policy
 415 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 416         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 417                                                  .len = IEEE80211_MAX_SSID_LEN },
 418         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 419 };
 420
 421 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 422                                      struct netlink_callback *cb,
 423                                      struct cfg80211_registered_device **rdev,
 424                                      struct wireless_dev **wdev)
 425 {
 426         int err;
 427
 428         rtnl_lock();
 429
 430         if (!cb->args[0]) {
 431                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 432                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 433                                   nl80211_policy);
 434                 if (err)
 435                         goto out_unlock;
 436
 437                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 438                                                    nl80211_fam.attrbuf);
 439                 if (IS_ERR(*wdev)) {
 440                         err = PTR_ERR(*wdev);
 441                         goto out_unlock;
 442                 }
 443                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 444                 cb->args[0] = (*rdev)->wiphy_idx;
 445                 cb->args[1] = (*wdev)->identifier;
 446         } else {
 447                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
 448                 struct wireless_dev *tmp;
 449
 450                 if (!wiphy) {
 451                         err = -ENODEV;
 452                         goto out_unlock;
 453                 }
 454                 *rdev = wiphy_to_dev(wiphy);
 455                 *wdev = NULL;
 456
 457                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 458                         if (tmp->identifier == cb->args[1]) {
 459                                 *wdev = tmp;
 460                                 break;
 461                         }
 462                 }
 463
 464                 if (!*wdev) {
 465                         err = -ENODEV;
 466                         goto out_unlock;
 467                 }
 468         }
 469
 470         return 0;
 471  out_unlock:
 472         rtnl_unlock();
 473         return err;
 474 }
 475
 476 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 477 {
 478         rtnl_unlock();
 479 }
 480
 481 /* IE validation */
 482 static bool is_valid_ie_attr(const struct nlattr *attr)
 483 {
 484         const u8 *pos;
 485         int len;
 486
 487         if (!attr)
 488                 return true;
 489
 490         pos = nla_data(attr);
 491         len = nla_len(attr);
 492
 493         while (len) {
 494                 u8 elemlen;
 495
 496                 if (len < 2)
 497                         return false;
 498                 len -= 2;
 499
 500                 elemlen = pos[1];
 501                 if (elemlen > len)
 502                         return false;
 503
 504                 len -= elemlen;
 505                 pos += 2 + elemlen;
 506         }
 507
 508         return true;
 509 }
 510
 511 /* message building helper */
 512 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 513                                    int flags, u8 cmd)
 514 {
 515         /* since there is no private header just add the generic one */
 516         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 517 }
 518
 519 static int nl80211_msg_put_channel(struct sk_buff *msg,
 520                                    struct ieee80211_channel *chan,
 521                                    bool large)
 522 {
 523         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 524                         chan->center_freq))
 525                 goto nla_put_failure;
 526
 527         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 528             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 529                 goto nla_put_failure;
 530         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 531             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 532                 goto nla_put_failure;
 533         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 534             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 535                 goto nla_put_failure;
 536         if (chan->flags & IEEE80211_CHAN_RADAR) {
 537                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 538                         goto nla_put_failure;
 539                 if (large) {
 540                         u32 time;
 541
 542                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 543
 544                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 545                                         chan->dfs_state))
 546                                 goto nla_put_failure;
 547                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 548                                         time))
 549                                 goto nla_put_failure;
 550                 }
 551         }
 552
 553         if (large) {
 554                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 555                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 556                         goto nla_put_failure;
 557                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 558                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 559                         goto nla_put_failure;
 560                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 561                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 562                         goto nla_put_failure;
 563                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 564                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 565                         goto nla_put_failure;
 566         }
 567
 568         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 569                         DBM_TO_MBM(chan->max_power)))
 570                 goto nla_put_failure;
 571
 572         return 0;
 573
 574  nla_put_failure:
 575         return -ENOBUFS;
 576 }
 577
 578 /* netlink command implementations */
 579
 580 struct key_parse {
 581         struct key_params p;
 582         int idx;
 583         int type;
 584         bool def, defmgmt;
 585         bool def_uni, def_multi;
 586 };
 587
 588 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 589 {
 590         struct nlattr *tb[NL80211_KEY_MAX + 1];
 591         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 592                                    nl80211_key_policy);
 593         if (err)
 594                 return err;
 595
 596         k->def = !!tb[NL80211_KEY_DEFAULT];
 597         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 598
 599         if (k->def) {
 600                 k->def_uni = true;
 601                 k->def_multi = true;
 602         }
 603         if (k->defmgmt)
 604                 k->def_multi = true;
 605
 606         if (tb[NL80211_KEY_IDX])
 607                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 608
 609         if (tb[NL80211_KEY_DATA]) {
 610                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 611                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 612         }
 613
 614         if (tb[NL80211_KEY_SEQ]) {
 615                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 616                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 617         }
 618
 619         if (tb[NL80211_KEY_CIPHER])
 620                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 621
 622         if (tb[NL80211_KEY_TYPE]) {
 623                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 624                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 625                         return -EINVAL;
 626         }
 627
 628         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 629                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 630                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 631                                        tb[NL80211_KEY_DEFAULT_TYPES],
 632                                        nl80211_key_default_policy);
 633                 if (err)
 634                         return err;
 635
 636                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 637                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 644 {
 645         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 646                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 647                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 648         }
 649
 650         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 651                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 652                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 653         }
 654
 655         if (info->attrs[NL80211_ATTR_KEY_IDX])
 656                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 657
 658         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 659                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 660
 661         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 662         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 663
 664         if (k->def) {
 665                 k->def_uni = true;
 666                 k->def_multi = true;
 667         }
 668         if (k->defmgmt)
 669                 k->def_multi = true;
 670
 671         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 672                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 673                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 674                         return -EINVAL;
 675         }
 676
 677         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 678                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 679                 int err = nla_parse_nested(
 680                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 681                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 682                                 nl80211_key_default_policy);
 683                 if (err)
 684                         return err;
 685
 686                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 687                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 688         }
 689
 690         return 0;
 691 }
 692
 693 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 694 {
 695         int err;
 696
 697         memset(k, 0, sizeof(*k));
 698         k->idx = -1;
 699         k->type = -1;
 700
 701         if (info->attrs[NL80211_ATTR_KEY])
 702                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 703         else
 704                 err = nl80211_parse_key_old(info, k);
 705
 706         if (err)
 707                 return err;
 708
 709         if (k->def && k->defmgmt)
 710                 return -EINVAL;
 711
 712         if (k->defmgmt) {
 713                 if (k->def_uni || !k->def_multi)
 714                         return -EINVAL;
 715         }
 716
 717         if (k->idx != -1) {
 718                 if (k->defmgmt) {
 719                         if (k->idx < 4 || k->idx > 5)
 720                                 return -EINVAL;
 721                 } else if (k->def) {
 722                         if (k->idx < 0 || k->idx > 3)
 723                                 return -EINVAL;
 724                 } else {
 725                         if (k->idx < 0 || k->idx > 5)
 726                                 return -EINVAL;
 727                 }
 728         }
 729
 730         return 0;
 731 }
 732
 733 static struct cfg80211_cached_keys *
 734 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 735                        struct nlattr *keys, bool *no_ht)
 736 {
 737         struct key_parse parse;
 738         struct nlattr *key;
 739         struct cfg80211_cached_keys *result;
 740         int rem, err, def = 0;
 741
 742         result = kzalloc(sizeof(*result), GFP_KERNEL);
 743         if (!result)
 744                 return ERR_PTR(-ENOMEM);
 745
 746         result->def = -1;
 747         result->defmgmt = -1;
 748
 749         nla_for_each_nested(key, keys, rem) {
 750                 memset(&parse, 0, sizeof(parse));
 751                 parse.idx = -1;
 752
 753                 err = nl80211_parse_key_new(key, &parse);
 754                 if (err)
 755                         goto error;
 756                 err = -EINVAL;
 757                 if (!parse.p.key)
 758                         goto error;
 759                 if (parse.idx < 0 || parse.idx > 4)
 760                         goto error;
 761                 if (parse.def) {
 762                         if (def)
 763                                 goto error;
 764                         def = 1;
 765                         result->def = parse.idx;
 766                         if (!parse.def_uni || !parse.def_multi)
 767                                 goto error;
 768                 } else if (parse.defmgmt)
 769                         goto error;
 770                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 771                                                      parse.idx, false, NULL);
 772                 if (err)
 773                         goto error;
 774                 result->params[parse.idx].cipher = parse.p.cipher;
 775                 result->params[parse.idx].key_len = parse.p.key_len;
 776                 result->params[parse.idx].key = result->data[parse.idx];
 777                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 778
 779                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 780                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 781                         if (no_ht)
 782                                 *no_ht = true;
 783                 }
 784         }
 785
 786         return result;
 787  error:
 788         kfree(result);
 789         return ERR_PTR(err);
 790 }
 791
 792 static int nl80211_key_allowed(struct wireless_dev *wdev)
 793 {
 794         ASSERT_WDEV_LOCK(wdev);
 795
 796         switch (wdev->iftype) {
 797         case NL80211_IFTYPE_AP:
 798         case NL80211_IFTYPE_AP_VLAN:
 799         case NL80211_IFTYPE_P2P_GO:
 800         case NL80211_IFTYPE_MESH_POINT:
 801                 break;
 802         case NL80211_IFTYPE_ADHOC:
 803                 if (!wdev->current_bss)
 804                         return -ENOLINK;
 805                 break;
 806         case NL80211_IFTYPE_STATION:
 807         case NL80211_IFTYPE_P2P_CLIENT:
 808                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
 809                         return -ENOLINK;
 810                 break;
 811         default:
 812                 return -EINVAL;
 813         }
 814
 815         return 0;
 816 }
 817
 818 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 819 {
 820         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 821         int i;
 822
 823         if (!nl_modes)
 824                 goto nla_put_failure;
 825
 826         i = 0;
 827         while (ifmodes) {
 828                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 829                         goto nla_put_failure;
 830                 ifmodes >>= 1;
 831                 i++;
 832         }
 833
 834         nla_nest_end(msg, nl_modes);
 835         return 0;
 836
 837 nla_put_failure:
 838         return -ENOBUFS;
 839 }
 840
 841 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 842                                           struct sk_buff *msg,
 843                                           bool large)
 844 {
 845         struct nlattr *nl_combis;
 846         int i, j;
 847
 848         nl_combis = nla_nest_start(msg,
 849                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 850         if (!nl_combis)
 851                 goto nla_put_failure;
 852
 853         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 854                 const struct ieee80211_iface_combination *c;
 855                 struct nlattr *nl_combi, *nl_limits;
 856
 857                 c = &wiphy->iface_combinations[i];
 858
 859                 nl_combi = nla_nest_start(msg, i + 1);
 860                 if (!nl_combi)
 861                         goto nla_put_failure;
 862
 863                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 864                 if (!nl_limits)
 865                         goto nla_put_failure;
 866
 867                 for (j = 0; j < c->n_limits; j++) {
 868                         struct nlattr *nl_limit;
 869
 870                         nl_limit = nla_nest_start(msg, j + 1);
 871                         if (!nl_limit)
 872                                 goto nla_put_failure;
 873                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 874                                         c->limits[j].max))
 875                                 goto nla_put_failure;
 876                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 877                                                 c->limits[j].types))
 878                                 goto nla_put_failure;
 879                         nla_nest_end(msg, nl_limit);
 880                 }
 881
 882                 nla_nest_end(msg, nl_limits);
 883
 884                 if (c->beacon_int_infra_match &&
 885                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 886                         goto nla_put_failure;
 887                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 888                                 c->num_different_channels) ||
 889                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 890                                 c->max_interfaces))
 891                         goto nla_put_failure;
 892                 if (large &&
 893                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 894                                 c->radar_detect_widths))
 895                         goto nla_put_failure;
 896
 897                 nla_nest_end(msg, nl_combi);
 898         }
 899
 900         nla_nest_end(msg, nl_combis);
 901
 902         return 0;
 903 nla_put_failure:
 904         return -ENOBUFS;
 905 }
 906
 907 #ifdef CONFIG_PM
 908 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 909                                         struct sk_buff *msg)
 910 {
 911         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp;
 912         struct nlattr *nl_tcp;
 913
 914         if (!tcp)
 915                 return 0;
 916
 917         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 918         if (!nl_tcp)
 919                 return -ENOBUFS;
 920
 921         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 922                         tcp->data_payload_max))
 923                 return -ENOBUFS;
 924
 925         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 926                         tcp->data_payload_max))
 927                 return -ENOBUFS;
 928
 929         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 930                 return -ENOBUFS;
 931
 932         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 933                                 sizeof(*tcp->tok), tcp->tok))
 934                 return -ENOBUFS;
 935
 936         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 937                         tcp->data_interval_max))
 938                 return -ENOBUFS;
 939
 940         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 941                         tcp->wake_payload_max))
 942                 return -ENOBUFS;
 943
 944         nla_nest_end(msg, nl_tcp);
 945         return 0;
 946 }
 947
 948 static int nl80211_send_wowlan(struct sk_buff *msg,
 949                                struct cfg80211_registered_device *dev,
 950                                bool large)
 951 {
 952         struct nlattr *nl_wowlan;
 953
 954         if (!dev->wiphy.wowlan.flags && !dev->wiphy.wowlan.n_patterns)
 955                 return 0;
 956
 957         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 958         if (!nl_wowlan)
 959                 return -ENOBUFS;
 960
 961         if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
 962              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 963             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
 964              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 965             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 966              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 967             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 968              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 969             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
 970              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
 971             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
 972              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
 973             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
 974              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
 975             ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
 976              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
 977                 return -ENOBUFS;
 978
 979         if (dev->wiphy.wowlan.n_patterns) {
 980                 struct nl80211_wowlan_pattern_support pat = {
 981                         .max_patterns = dev->wiphy.wowlan.n_patterns,
 982                         .min_pattern_len = dev->wiphy.wowlan.pattern_min_len,
 983                         .max_pattern_len = dev->wiphy.wowlan.pattern_max_len,
 984                         .max_pkt_offset = dev->wiphy.wowlan.max_pkt_offset,
 985                 };
 986
 987                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 988                             sizeof(pat), &pat))
 989                         return -ENOBUFS;
 990         }
 991
 992         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
 993                 return -ENOBUFS;
 994
 995         nla_nest_end(msg, nl_wowlan);
 996
 997         return 0;
 998 }
 999 #endif
1000
1001 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1002                                       struct ieee80211_supported_band *sband)
1003 {
1004         struct nlattr *nl_rates, *nl_rate;
1005         struct ieee80211_rate *rate;
1006         int i;
1007
1008         /* add HT info */
1009         if (sband->ht_cap.ht_supported &&
1010             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1011                      sizeof(sband->ht_cap.mcs),
1012                      &sband->ht_cap.mcs) ||
1013              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1014                          sband->ht_cap.cap) ||
1015              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1016                         sband->ht_cap.ampdu_factor) ||
1017              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1018                         sband->ht_cap.ampdu_density)))
1019                 return -ENOBUFS;
1020
1021         /* add VHT info */
1022         if (sband->vht_cap.vht_supported &&
1023             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1024                      sizeof(sband->vht_cap.vht_mcs),
1025                      &sband->vht_cap.vht_mcs) ||
1026              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1027                          sband->vht_cap.cap)))
1028                 return -ENOBUFS;
1029
1030         /* add bitrates */
1031         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1032         if (!nl_rates)
1033                 return -ENOBUFS;
1034
1035         for (i = 0; i < sband->n_bitrates; i++) {
1036                 nl_rate = nla_nest_start(msg, i);
1037                 if (!nl_rate)
1038                         return -ENOBUFS;
1039
1040                 rate = &sband->bitrates[i];
1041                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1042                                 rate->bitrate))
1043                         return -ENOBUFS;
1044                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1045                     nla_put_flag(msg,
1046                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1047                         return -ENOBUFS;
1048
1049                 nla_nest_end(msg, nl_rate);
1050         }
1051
1052         nla_nest_end(msg, nl_rates);
1053
1054         return 0;
1055 }
1056
1057 static int
1058 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1059                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1060 {
1061         u16 stypes;
1062         struct nlattr *nl_ftypes, *nl_ifs;
1063         enum nl80211_iftype ift;
1064         int i;
1065
1066         if (!mgmt_stypes)
1067                 return 0;
1068
1069         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1070         if (!nl_ifs)
1071                 return -ENOBUFS;
1072
1073         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1074                 nl_ftypes = nla_nest_start(msg, ift);
1075                 if (!nl_ftypes)
1076                         return -ENOBUFS;
1077                 i = 0;
1078                 stypes = mgmt_stypes[ift].tx;
1079                 while (stypes) {
1080                         if ((stypes & 1) &&
1081                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1082                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1083                                 return -ENOBUFS;
1084                         stypes >>= 1;
1085                         i++;
1086                 }
1087                 nla_nest_end(msg, nl_ftypes);
1088         }
1089
1090         nla_nest_end(msg, nl_ifs);
1091
1092         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1093         if (!nl_ifs)
1094                 return -ENOBUFS;
1095
1096         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1097                 nl_ftypes = nla_nest_start(msg, ift);
1098                 if (!nl_ftypes)
1099                         return -ENOBUFS;
1100                 i = 0;
1101                 stypes = mgmt_stypes[ift].rx;
1102                 while (stypes) {
1103                         if ((stypes & 1) &&
1104                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1105                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1106                                 return -ENOBUFS;
1107                         stypes >>= 1;
1108                         i++;
1109                 }
1110                 nla_nest_end(msg, nl_ftypes);
1111         }
1112         nla_nest_end(msg, nl_ifs);
1113
1114         return 0;
1115 }
1116
1117 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1118                               struct sk_buff *msg, u32 portid, u32 seq,
1119                               int flags, bool split, long *split_start,
1120                               long *band_start, long *chan_start)
1121 {
1122         void *hdr;
1123         struct nlattr *nl_bands, *nl_band;
1124         struct nlattr *nl_freqs, *nl_freq;
1125         struct nlattr *nl_cmds;
1126         enum ieee80211_band band;
1127         struct ieee80211_channel *chan;
1128         int i;
1129         const struct ieee80211_txrx_stypes *mgmt_stypes =
1130                                 dev->wiphy.mgmt_stypes;
1131         long start = 0, start_chan = 0, start_band = 0;
1132         u32 features;
1133
1134         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1135         if (!hdr)
1136                 return -ENOBUFS;
1137
1138         /* allow always using the variables */
1139         if (!split) {
1140                 split_start = &start;
1141                 band_start = &start_band;
1142                 chan_start = &start_chan;
1143         }
1144
1145         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1146             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1147                            wiphy_name(&dev->wiphy)) ||
1148             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1149                         cfg80211_rdev_list_generation))
1150                 goto nla_put_failure;
1151
1152         switch (*split_start) {
1153         case 0:
1154                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1155                                dev->wiphy.retry_short) ||
1156                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1157                                dev->wiphy.retry_long) ||
1158                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1159                                 dev->wiphy.frag_threshold) ||
1160                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1161                                 dev->wiphy.rts_threshold) ||
1162                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1163                                dev->wiphy.coverage_class) ||
1164                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1165                                dev->wiphy.max_scan_ssids) ||
1166                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1167                                dev->wiphy.max_sched_scan_ssids) ||
1168                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1169                                 dev->wiphy.max_scan_ie_len) ||
1170                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1171                                 dev->wiphy.max_sched_scan_ie_len) ||
1172                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1173                                dev->wiphy.max_match_sets))
1174                         goto nla_put_failure;
1175
1176                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1177                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1178                         goto nla_put_failure;
1179                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1180                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1181                         goto nla_put_failure;
1182                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1183                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1184                         goto nla_put_failure;
1185                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1186                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1187                         goto nla_put_failure;
1188                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1189                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1190                         goto nla_put_failure;
1191                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1192                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1193                         goto nla_put_failure;
1194
1195                 (*split_start)++;
1196                 if (split)
1197                         break;
1198         case 1:
1199                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1200                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1201                             dev->wiphy.cipher_suites))
1202                         goto nla_put_failure;
1203
1204                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1205                                dev->wiphy.max_num_pmkids))
1206                         goto nla_put_failure;
1207
1208                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1209                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1210                         goto nla_put_failure;
1211
1212                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1213                                 dev->wiphy.available_antennas_tx) ||
1214                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1215                                 dev->wiphy.available_antennas_rx))
1216                         goto nla_put_failure;
1217
1218                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1219                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1220                                 dev->wiphy.probe_resp_offload))
1221                         goto nla_put_failure;
1222
1223                 if ((dev->wiphy.available_antennas_tx ||
1224                      dev->wiphy.available_antennas_rx) &&
1225                     dev->ops->get_antenna) {
1226                         u32 tx_ant = 0, rx_ant = 0;
1227                         int res;
1228                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1229                         if (!res) {
1230                                 if (nla_put_u32(msg,
1231                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1232                                                 tx_ant) ||
1233                                     nla_put_u32(msg,
1234                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1235                                                 rx_ant))
1236                                         goto nla_put_failure;
1237                         }
1238                 }
1239
1240                 (*split_start)++;
1241                 if (split)
1242                         break;
1243         case 2:
1244                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1245                                         dev->wiphy.interface_modes))
1246                                 goto nla_put_failure;
1247                 (*split_start)++;
1248                 if (split)
1249                         break;
1250         case 3:
1251                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1252                 if (!nl_bands)
1253                         goto nla_put_failure;
1254
1255                 for (band = *band_start; band < IEEE80211_NUM_BANDS; band++) {
1256                         struct ieee80211_supported_band *sband;
1257
1258                         sband = dev->wiphy.bands[band];
1259
1260                         if (!sband)
1261                                 continue;
1262
1263                         nl_band = nla_nest_start(msg, band);
1264                         if (!nl_band)
1265                                 goto nla_put_failure;
1266
1267                         switch (*chan_start) {
1268                         case 0:
1269                                 if (nl80211_send_band_rateinfo(msg, sband))
1270                                         goto nla_put_failure;
1271                                 (*chan_start)++;
1272                                 if (split)
1273                                         break;
1274                         default:
1275                                 /* add frequencies */
1276                                 nl_freqs = nla_nest_start(
1277                                         msg, NL80211_BAND_ATTR_FREQS);
1278                                 if (!nl_freqs)
1279                                         goto nla_put_failure;
1280
1281                                 for (i = *chan_start - 1;
1282                                      i < sband->n_channels;
1283                                      i++) {
1284                                         nl_freq = nla_nest_start(msg, i);
1285                                         if (!nl_freq)
1286                                                 goto nla_put_failure;
1287
1288                                         chan = &sband->channels[i];
1289
1290                                         if (nl80211_msg_put_channel(msg, chan,
1291                                                                     split))
1292                                                 goto nla_put_failure;
1293
1294                                         nla_nest_end(msg, nl_freq);
1295                                         if (split)
1296                                                 break;
1297                                 }
1298                                 if (i < sband->n_channels)
1299                                         *chan_start = i + 2;
1300                                 else
1301                                         *chan_start = 0;
1302                                 nla_nest_end(msg, nl_freqs);
1303                         }
1304
1305                         nla_nest_end(msg, nl_band);
1306
1307                         if (split) {
1308                                 /* start again here */
1309                                 if (*chan_start)
1310                                         band--;
1311                                 break;
1312                         }
1313                 }
1314                 nla_nest_end(msg, nl_bands);
1315
1316                 if (band < IEEE80211_NUM_BANDS)
1317                         *band_start = band + 1;
1318                 else
1319                         *band_start = 0;
1320
1321                 /* if bands & channels are done, continue outside */
1322                 if (*band_start == 0 && *chan_start == 0)
1323                         (*split_start)++;
1324                 if (split)
1325                         break;
1326         case 4:
1327                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1328                 if (!nl_cmds)
1329                         goto nla_put_failure;
1330
1331                 i = 0;
1332 #define CMD(op, n)                                                      \
1333                  do {                                                   \
1334                         if (dev->ops->op) {                             \
1335                                 i++;                                    \
1336                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1337                                         goto nla_put_failure;           \
1338                         }                                               \
1339                 } while (0)
1340
1341                 CMD(add_virtual_intf, NEW_INTERFACE);
1342                 CMD(change_virtual_intf, SET_INTERFACE);
1343                 CMD(add_key, NEW_KEY);
1344                 CMD(start_ap, START_AP);
1345                 CMD(add_station, NEW_STATION);
1346                 CMD(add_mpath, NEW_MPATH);
1347                 CMD(update_mesh_config, SET_MESH_CONFIG);
1348                 CMD(change_bss, SET_BSS);
1349                 CMD(auth, AUTHENTICATE);
1350                 CMD(assoc, ASSOCIATE);
1351                 CMD(deauth, DEAUTHENTICATE);
1352                 CMD(disassoc, DISASSOCIATE);
1353                 CMD(join_ibss, JOIN_IBSS);
1354                 CMD(join_mesh, JOIN_MESH);
1355                 CMD(set_pmksa, SET_PMKSA);
1356                 CMD(del_pmksa, DEL_PMKSA);
1357                 CMD(flush_pmksa, FLUSH_PMKSA);
1358                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1359                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1360                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1361                 CMD(mgmt_tx, FRAME);
1362                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1363                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1364                         i++;
1365                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1366                                 goto nla_put_failure;
1367                 }
1368                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1369                     dev->ops->join_mesh) {
1370                         i++;
1371                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1372                                 goto nla_put_failure;
1373                 }
1374                 CMD(set_wds_peer, SET_WDS_PEER);
1375                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1376                         CMD(tdls_mgmt, TDLS_MGMT);
1377                         CMD(tdls_oper, TDLS_OPER);
1378                 }
1379                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1380                         CMD(sched_scan_start, START_SCHED_SCAN);
1381                 CMD(probe_client, PROBE_CLIENT);
1382                 CMD(set_noack_map, SET_NOACK_MAP);
1383                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1384                         i++;
1385                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1386                                 goto nla_put_failure;
1387                 }
1388                 CMD(start_p2p_device, START_P2P_DEVICE);
1389                 CMD(set_mcast_rate, SET_MCAST_RATE);
1390                 if (split) {
1391                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1392                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1393                 }
1394
1395 #ifdef CONFIG_NL80211_TESTMODE
1396                 CMD(testmode_cmd, TESTMODE);
1397 #endif
1398
1399 #undef CMD
1400
1401                 if (dev->ops->connect || dev->ops->auth) {
1402                         i++;
1403                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1404                                 goto nla_put_failure;
1405                 }
1406
1407                 if (dev->ops->disconnect || dev->ops->deauth) {
1408                         i++;
1409                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1410                                 goto nla_put_failure;
1411                 }
1412
1413                 nla_nest_end(msg, nl_cmds);
1414                 (*split_start)++;
1415                 if (split)
1416                         break;
1417         case 5:
1418                 if (dev->ops->remain_on_channel &&
1419                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1420                     nla_put_u32(msg,
1421                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1422                                 dev->wiphy.max_remain_on_channel_duration))
1423                         goto nla_put_failure;
1424
1425                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1426                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1427                         goto nla_put_failure;
1428
1429                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1430                         goto nla_put_failure;
1431                 (*split_start)++;
1432                 if (split)
1433                         break;
1434         case 6:
1435 #ifdef CONFIG_PM
1436                 if (nl80211_send_wowlan(msg, dev, split))
1437                         goto nla_put_failure;
1438                 (*split_start)++;
1439                 if (split)
1440                         break;
1441 #else
1442                 (*split_start)++;
1443 #endif
1444         case 7:
1445                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1446                                         dev->wiphy.software_iftypes))
1447                         goto nla_put_failure;
1448
1449                 if (nl80211_put_iface_combinations(&dev->wiphy, msg, split))
1450                         goto nla_put_failure;
1451
1452                 (*split_start)++;
1453                 if (split)
1454                         break;
1455         case 8:
1456                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1457                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1458                                 dev->wiphy.ap_sme_capa))
1459                         goto nla_put_failure;
1460
1461                 features = dev->wiphy.features;
1462                 /*
1463                  * We can only add the per-channel limit information if the
1464                  * dump is split, otherwise it makes it too big. Therefore
1465                  * only advertise it in that case.
1466                  */
1467                 if (split)
1468                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1469                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1470                         goto nla_put_failure;
1471
1472                 if (dev->wiphy.ht_capa_mod_mask &&
1473                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1474                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1475                             dev->wiphy.ht_capa_mod_mask))
1476                         goto nla_put_failure;
1477
1478                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1479                     dev->wiphy.max_acl_mac_addrs &&
1480                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1481                                 dev->wiphy.max_acl_mac_addrs))
1482                         goto nla_put_failure;
1483
1484                 /*
1485                  * Any information below this point is only available to
1486                  * applications that can deal with it being split. This
1487                  * helps ensure that newly added capabilities don't break
1488                  * older tools by overrunning their buffers.
1489                  *
1490                  * We still increment split_start so that in the split
1491                  * case we'll continue with more data in the next round,
1492                  * but break unconditionally so unsplit data stops here.
1493                  */
1494                 (*split_start)++;
1495                 break;
1496         case 9:
1497                 if (dev->wiphy.extended_capabilities &&
1498                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1499                              dev->wiphy.extended_capabilities_len,
1500                              dev->wiphy.extended_capabilities) ||
1501                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1502                              dev->wiphy.extended_capabilities_len,
1503                              dev->wiphy.extended_capabilities_mask)))
1504                         goto nla_put_failure;
1505
1506                 if (dev->wiphy.vht_capa_mod_mask &&
1507                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1508                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1509                             dev->wiphy.vht_capa_mod_mask))
1510                         goto nla_put_failure;
1511
1512                 /* done */
1513                 *split_start = 0;
1514                 break;
1515         }
1516         return genlmsg_end(msg, hdr);
1517
1518  nla_put_failure:
1519         genlmsg_cancel(msg, hdr);
1520         return -EMSGSIZE;
1521 }
1522
1523 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1524 {
1525         int idx = 0, ret;
1526         int start = cb->args[0];
1527         struct cfg80211_registered_device *dev;
1528         s64 filter_wiphy = -1;
1529         bool split = false;
1530         struct nlattr **tb;
1531         int res;
1532
1533         /* will be zeroed in nlmsg_parse() */
1534         tb = kmalloc(sizeof(*tb) * (NL80211_ATTR_MAX + 1), GFP_KERNEL);
1535         if (!tb)
1536                 return -ENOMEM;
1537
1538         rtnl_lock();
1539
1540         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1541                           tb, NL80211_ATTR_MAX, nl80211_policy);
1542         if (res == 0) {
1543                 split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1544                 if (tb[NL80211_ATTR_WIPHY])
1545                         filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1546                 if (tb[NL80211_ATTR_WDEV])
1547                         filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1548                 if (tb[NL80211_ATTR_IFINDEX]) {
1549                         struct net_device *netdev;
1550                         int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1551
1552                         netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1553                         if (!netdev) {
1554                                 rtnl_unlock();
1555                                 kfree(tb);
1556                                 return -ENODEV;
1557                         }
1558                         if (netdev->ieee80211_ptr) {
1559                                 dev = wiphy_to_dev(
1560                                         netdev->ieee80211_ptr->wiphy);
1561                                 filter_wiphy = dev->wiphy_idx;
1562                         }
1563                         dev_put(netdev);
1564                 }
1565         }
1566         kfree(tb);
1567
1568         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1569                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1570                         continue;
1571                 if (++idx <= start)
1572                         continue;
1573                 if (filter_wiphy != -1 && dev->wiphy_idx != filter_wiphy)
1574                         continue;
1575                 /* attempt to fit multiple wiphy data chunks into the skb */
1576                 do {
1577                         ret = nl80211_send_wiphy(dev, skb,
1578                                                  NETLINK_CB(cb->skb).portid,
1579                                                  cb->nlh->nlmsg_seq,
1580                                                  NLM_F_MULTI,
1581                                                  split, &cb->args[1],
1582                                                  &cb->args[2],
1583                                                  &cb->args[3]);
1584                         if (ret < 0) {
1585                                 /*
1586                                  * If sending the wiphy data didn't fit (ENOBUFS
1587                                  * or EMSGSIZE returned), this SKB is still
1588                                  * empty (so it's not too big because another
1589                                  * wiphy dataset is already in the skb) and
1590                                  * we've not tried to adjust the dump allocation
1591                                  * yet ... then adjust the alloc size to be
1592                                  * bigger, and return 1 but with the empty skb.
1593                                  * This results in an empty message being RX'ed
1594                                  * in userspace, but that is ignored.
1595                                  *
1596                                  * We can then retry with the larger buffer.
1597                                  */
1598                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1599                                     !skb->len &&
1600                                     cb->min_dump_alloc < 4096) {
1601                                         cb->min_dump_alloc = 4096;
1602                                         rtnl_unlock();
1603                                         return 1;
1604                                 }
1605                                 idx--;
1606                                 break;
1607                         }
1608                 } while (cb->args[1] > 0);
1609                 break;
1610         }
1611         rtnl_unlock();
1612
1613         cb->args[0] = idx;
1614
1615         return skb->len;
1616 }
1617
1618 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1619 {
1620         struct sk_buff *msg;
1621         struct cfg80211_registered_device *dev = info->user_ptr[0];
1622
1623         msg = nlmsg_new(4096, GFP_KERNEL);
1624         if (!msg)
1625                 return -ENOMEM;
1626
1627         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1628                                false, NULL, NULL, NULL) < 0) {
1629                 nlmsg_free(msg);
1630                 return -ENOBUFS;
1631         }
1632
1633         return genlmsg_reply(msg, info);
1634 }
1635
1636 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1637         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1638         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1639         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1640         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1641         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1642 };
1643
1644 static int parse_txq_params(struct nlattr *tb[],
1645                             struct ieee80211_txq_params *txq_params)
1646 {
1647         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1648             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1649             !tb[NL80211_TXQ_ATTR_AIFS])
1650                 return -EINVAL;
1651
1652         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1653         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1654         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1655         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1656         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1657
1658         if (txq_params->ac >= NL80211_NUM_ACS)
1659                 return -EINVAL;
1660
1661         return 0;
1662 }
1663
1664 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1665 {
1666         /*
1667          * You can only set the channel explicitly for WDS interfaces,
1668          * all others have their channel managed via their respective
1669          * "establish a connection" command (connect, join, ...)
1670          *
1671          * For AP/GO and mesh mode, the channel can be set with the
1672          * channel userspace API, but is only stored and passed to the
1673          * low-level driver when the AP starts or the mesh is joined.
1674          * This is for backward compatibility, userspace can also give
1675          * the channel in the start-ap or join-mesh commands instead.
1676          *
1677          * Monitors are special as they are normally slaved to
1678          * whatever else is going on, so they have their own special
1679          * operation to set the monitor channel if possible.
1680          */
1681         return !wdev ||
1682                 wdev->iftype == NL80211_IFTYPE_AP ||
1683                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1684                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1685                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1686 }
1687
1688 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1689                                  struct genl_info *info,
1690                                  struct cfg80211_chan_def *chandef)
1691 {
1692         u32 control_freq;
1693
1694         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1695                 return -EINVAL;
1696
1697         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1698
1699         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1700         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1701         chandef->center_freq1 = control_freq;
1702         chandef->center_freq2 = 0;
1703
1704         /* Primary channel not allowed */
1705         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1706                 return -EINVAL;
1707
1708         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1709                 enum nl80211_channel_type chantype;
1710
1711                 chantype = nla_get_u32(
1712                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1713
1714                 switch (chantype) {
1715                 case NL80211_CHAN_NO_HT:
1716                 case NL80211_CHAN_HT20:
1717                 case NL80211_CHAN_HT40PLUS:
1718                 case NL80211_CHAN_HT40MINUS:
1719                         cfg80211_chandef_create(chandef, chandef->chan,
1720                                                 chantype);
1721                         break;
1722                 default:
1723                         return -EINVAL;
1724                 }
1725         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1726                 chandef->width =
1727                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1728                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1729                         chandef->center_freq1 =
1730                                 nla_get_u32(
1731                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1732                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1733                         chandef->center_freq2 =
1734                                 nla_get_u32(
1735                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1736         }
1737
1738         if (!cfg80211_chandef_valid(chandef))
1739                 return -EINVAL;
1740
1741         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1742                                      IEEE80211_CHAN_DISABLED))
1743                 return -EINVAL;
1744
1745         return 0;
1746 }
1747
1748 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1749                                  struct wireless_dev *wdev,
1750                                  struct genl_info *info)
1751 {
1752         struct cfg80211_chan_def chandef;
1753         int result;
1754         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1755
1756         if (wdev)
1757                 iftype = wdev->iftype;
1758
1759         if (!nl80211_can_set_dev_channel(wdev))
1760                 return -EOPNOTSUPP;
1761
1762         result = nl80211_parse_chandef(rdev, info, &chandef);
1763         if (result)
1764                 return result;
1765
1766         switch (iftype) {
1767         case NL80211_IFTYPE_AP:
1768         case NL80211_IFTYPE_P2P_GO:
1769                 if (wdev->beacon_interval) {
1770                         result = -EBUSY;
1771                         break;
1772                 }
1773                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1774                         result = -EINVAL;
1775                         break;
1776                 }
1777                 wdev->preset_chandef = chandef;
1778                 result = 0;
1779                 break;
1780         case NL80211_IFTYPE_MESH_POINT:
1781                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1782                 break;
1783         case NL80211_IFTYPE_MONITOR:
1784                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1785                 break;
1786         default:
1787                 result = -EINVAL;
1788         }
1789
1790         return result;
1791 }
1792
1793 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1794 {
1795         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1796         struct net_device *netdev = info->user_ptr[1];
1797
1798         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1799 }
1800
1801 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1802 {
1803         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1804         struct net_device *dev = info->user_ptr[1];
1805         struct wireless_dev *wdev = dev->ieee80211_ptr;
1806         const u8 *bssid;
1807
1808         if (!info->attrs[NL80211_ATTR_MAC])
1809                 return -EINVAL;
1810
1811         if (netif_running(dev))
1812                 return -EBUSY;
1813
1814         if (!rdev->ops->set_wds_peer)
1815                 return -EOPNOTSUPP;
1816
1817         if (wdev->iftype != NL80211_IFTYPE_WDS)
1818                 return -EOPNOTSUPP;
1819
1820         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1821         return rdev_set_wds_peer(rdev, dev, bssid);
1822 }
1823
1824
1825 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1826 {
1827         struct cfg80211_registered_device *rdev;
1828         struct net_device *netdev = NULL;
1829         struct wireless_dev *wdev;
1830         int result = 0, rem_txq_params = 0;
1831         struct nlattr *nl_txq_params;
1832         u32 changed;
1833         u8 retry_short = 0, retry_long = 0;
1834         u32 frag_threshold = 0, rts_threshold = 0;
1835         u8 coverage_class = 0;
1836
1837         ASSERT_RTNL();
1838
1839         /*
1840          * Try to find the wiphy and netdev. Normally this
1841          * function shouldn't need the netdev, but this is
1842          * done for backward compatibility -- previously
1843          * setting the channel was done per wiphy, but now
1844          * it is per netdev. Previous userland like hostapd
1845          * also passed a netdev to set_wiphy, so that it is
1846          * possible to let that go to the right netdev!
1847          */
1848
1849         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1850                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1851
1852                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1853                 if (netdev && netdev->ieee80211_ptr)
1854                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1855                 else
1856                         netdev = NULL;
1857         }
1858
1859         if (!netdev) {
1860                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1861                                                   info->attrs);
1862                 if (IS_ERR(rdev))
1863                         return PTR_ERR(rdev);
1864                 wdev = NULL;
1865                 netdev = NULL;
1866                 result = 0;
1867         } else
1868                 wdev = netdev->ieee80211_ptr;
1869
1870         /*
1871          * end workaround code, by now the rdev is available
1872          * and locked, and wdev may or may not be NULL.
1873          */
1874
1875         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1876                 result = cfg80211_dev_rename(
1877                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1878
1879         if (result)
1880                 goto bad_res;
1881
1882         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1883                 struct ieee80211_txq_params txq_params;
1884                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1885
1886                 if (!rdev->ops->set_txq_params) {
1887                         result = -EOPNOTSUPP;
1888                         goto bad_res;
1889                 }
1890
1891                 if (!netdev) {
1892                         result = -EINVAL;
1893                         goto bad_res;
1894                 }
1895
1896                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1897                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1898                         result = -EINVAL;
1899                         goto bad_res;
1900                 }
1901
1902                 if (!netif_running(netdev)) {
1903                         result = -ENETDOWN;
1904                         goto bad_res;
1905                 }
1906
1907                 nla_for_each_nested(nl_txq_params,
1908                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1909                                     rem_txq_params) {
1910                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1911                                   nla_data(nl_txq_params),
1912                                   nla_len(nl_txq_params),
1913                                   txq_params_policy);
1914                         result = parse_txq_params(tb, &txq_params);
1915                         if (result)
1916                                 goto bad_res;
1917
1918                         result = rdev_set_txq_params(rdev, netdev,
1919                                                      &txq_params);
1920                         if (result)
1921                                 goto bad_res;
1922                 }
1923         }
1924
1925         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1926                 result = __nl80211_set_channel(rdev,
1927                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1928                                 info);
1929                 if (result)
1930                         goto bad_res;
1931         }
1932
1933         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1934                 struct wireless_dev *txp_wdev = wdev;
1935                 enum nl80211_tx_power_setting type;
1936                 int idx, mbm = 0;
1937
1938                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
1939                         txp_wdev = NULL;
1940
1941                 if (!rdev->ops->set_tx_power) {
1942                         result = -EOPNOTSUPP;
1943                         goto bad_res;
1944                 }
1945
1946                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1947                 type = nla_get_u32(info->attrs[idx]);
1948
1949                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1950                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1951                         result = -EINVAL;
1952                         goto bad_res;
1953                 }
1954
1955                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1956                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1957                         mbm = nla_get_u32(info->attrs[idx]);
1958                 }
1959
1960                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
1961                 if (result)
1962                         goto bad_res;
1963         }
1964
1965         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1966             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1967                 u32 tx_ant, rx_ant;
1968                 if ((!rdev->wiphy.available_antennas_tx &&
1969                      !rdev->wiphy.available_antennas_rx) ||
1970                     !rdev->ops->set_antenna) {
1971                         result = -EOPNOTSUPP;
1972                         goto bad_res;
1973                 }
1974
1975                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1976                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1977
1978                 /* reject antenna configurations which don't match the
1979                  * available antenna masks, except for the "all" mask */
1980                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1981                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1982                         result = -EINVAL;
1983                         goto bad_res;
1984                 }
1985
1986                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1987                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1988
1989                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
1990                 if (result)
1991                         goto bad_res;
1992         }
1993
1994         changed = 0;
1995
1996         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1997                 retry_short = nla_get_u8(
1998                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1999                 if (retry_short == 0) {
2000                         result = -EINVAL;
2001                         goto bad_res;
2002                 }
2003                 changed |= WIPHY_PARAM_RETRY_SHORT;
2004         }
2005
2006         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2007                 retry_long = nla_get_u8(
2008                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2009                 if (retry_long == 0) {
2010                         result = -EINVAL;
2011                         goto bad_res;
2012                 }
2013                 changed |= WIPHY_PARAM_RETRY_LONG;
2014         }
2015
2016         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2017                 frag_threshold = nla_get_u32(
2018                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2019                 if (frag_threshold < 256) {
2020                         result = -EINVAL;
2021                         goto bad_res;
2022                 }
2023                 if (frag_threshold != (u32) -1) {
2024                         /*
2025                          * Fragments (apart from the last one) are required to
2026                          * have even length. Make the fragmentation code
2027                          * simpler by stripping LSB should someone try to use
2028                          * odd threshold value.
2029                          */
2030                         frag_threshold &= ~0x1;
2031                 }
2032                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2033         }
2034
2035         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2036                 rts_threshold = nla_get_u32(
2037                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2038                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2039         }
2040
2041         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2042                 coverage_class = nla_get_u8(
2043                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2044                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2045         }
2046
2047         if (changed) {
2048                 u8 old_retry_short, old_retry_long;
2049                 u32 old_frag_threshold, old_rts_threshold;
2050                 u8 old_coverage_class;
2051
2052                 if (!rdev->ops->set_wiphy_params) {
2053                         result = -EOPNOTSUPP;
2054                         goto bad_res;
2055                 }
2056
2057                 old_retry_short = rdev->wiphy.retry_short;
2058                 old_retry_long = rdev->wiphy.retry_long;
2059                 old_frag_threshold = rdev->wiphy.frag_threshold;
2060                 old_rts_threshold = rdev->wiphy.rts_threshold;
2061                 old_coverage_class = rdev->wiphy.coverage_class;
2062
2063                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2064                         rdev->wiphy.retry_short = retry_short;
2065                 if (changed & WIPHY_PARAM_RETRY_LONG)
2066                         rdev->wiphy.retry_long = retry_long;
2067                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2068                         rdev->wiphy.frag_threshold = frag_threshold;
2069                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2070                         rdev->wiphy.rts_threshold = rts_threshold;
2071                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2072                         rdev->wiphy.coverage_class = coverage_class;
2073
2074                 result = rdev_set_wiphy_params(rdev, changed);
2075                 if (result) {
2076                         rdev->wiphy.retry_short = old_retry_short;
2077                         rdev->wiphy.retry_long = old_retry_long;
2078                         rdev->wiphy.frag_threshold = old_frag_threshold;
2079                         rdev->wiphy.rts_threshold = old_rts_threshold;
2080                         rdev->wiphy.coverage_class = old_coverage_class;
2081                 }
2082         }
2083
2084  bad_res:
2085         if (netdev)
2086                 dev_put(netdev);
2087         return result;
2088 }
2089
2090 static inline u64 wdev_id(struct wireless_dev *wdev)
2091 {
2092         return (u64)wdev->identifier |
2093                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2094 }
2095
2096 static int nl80211_send_chandef(struct sk_buff *msg,
2097                                  struct cfg80211_chan_def *chandef)
2098 {
2099         WARN_ON(!cfg80211_chandef_valid(chandef));
2100
2101         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2102                         chandef->chan->center_freq))
2103                 return -ENOBUFS;
2104         switch (chandef->width) {
2105         case NL80211_CHAN_WIDTH_20_NOHT:
2106         case NL80211_CHAN_WIDTH_20:
2107         case NL80211_CHAN_WIDTH_40:
2108                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2109                                 cfg80211_get_chandef_type(chandef)))
2110                         return -ENOBUFS;
2111                 break;
2112         default:
2113                 break;
2114         }
2115         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2116                 return -ENOBUFS;
2117         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2118                 return -ENOBUFS;
2119         if (chandef->center_freq2 &&
2120             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2121                 return -ENOBUFS;
2122         return 0;
2123 }
2124
2125 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2126                               struct cfg80211_registered_device *rdev,
2127                               struct wireless_dev *wdev)
2128 {
2129         struct net_device *dev = wdev->netdev;
2130         void *hdr;
2131
2132         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2133         if (!hdr)
2134                 return -1;
2135
2136         if (dev &&
2137             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2138              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2139                 goto nla_put_failure;
2140
2141         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2142             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2143             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2144             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2145             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2146                         rdev->devlist_generation ^
2147                         (cfg80211_rdev_list_generation << 2)))
2148                 goto nla_put_failure;
2149
2150         if (rdev->ops->get_channel) {
2151                 int ret;
2152                 struct cfg80211_chan_def chandef;
2153
2154                 ret = rdev_get_channel(rdev, wdev, &chandef);
2155                 if (ret == 0) {
2156                         if (nl80211_send_chandef(msg, &chandef))
2157                                 goto nla_put_failure;
2158                 }
2159         }
2160
2161         if (wdev->ssid_len) {
2162                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2163                         goto nla_put_failure;
2164         }
2165
2166         return genlmsg_end(msg, hdr);
2167
2168  nla_put_failure:
2169         genlmsg_cancel(msg, hdr);
2170         return -EMSGSIZE;
2171 }
2172
2173 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2174 {
2175         int wp_idx = 0;
2176         int if_idx = 0;
2177         int wp_start = cb->args[0];
2178         int if_start = cb->args[1];
2179         struct cfg80211_registered_device *rdev;
2180         struct wireless_dev *wdev;
2181
2182         rtnl_lock();
2183         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2184                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2185                         continue;
2186                 if (wp_idx < wp_start) {
2187                         wp_idx++;
2188                         continue;
2189                 }
2190                 if_idx = 0;
2191
2192                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2193                         if (if_idx < if_start) {
2194                                 if_idx++;
2195                                 continue;
2196                         }
2197                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2198                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2199                                                rdev, wdev) < 0) {
2200                                 goto out;
2201                         }
2202                         if_idx++;
2203                 }
2204
2205                 wp_idx++;
2206         }
2207  out:
2208         rtnl_unlock();
2209
2210         cb->args[0] = wp_idx;
2211         cb->args[1] = if_idx;
2212
2213         return skb->len;
2214 }
2215
2216 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2217 {
2218         struct sk_buff *msg;
2219         struct cfg80211_registered_device *dev = info->user_ptr[0];
2220         struct wireless_dev *wdev = info->user_ptr[1];
2221
2222         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2223         if (!msg)
2224                 return -ENOMEM;
2225
2226         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2227                                dev, wdev) < 0) {
2228                 nlmsg_free(msg);
2229                 return -ENOBUFS;
2230         }
2231
2232         return genlmsg_reply(msg, info);
2233 }
2234
2235 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2236         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2237         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2238         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2239         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2240         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2241         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2242 };
2243
2244 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2245 {
2246         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2247         int flag;
2248
2249         *mntrflags = 0;
2250
2251         if (!nla)
2252                 return -EINVAL;
2253
2254         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2255                              nla, mntr_flags_policy))
2256                 return -EINVAL;
2257
2258         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2259                 if (flags[flag])
2260                         *mntrflags |= (1<<flag);
2261
2262         return 0;
2263 }
2264
2265 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2266                                struct net_device *netdev, u8 use_4addr,
2267                                enum nl80211_iftype iftype)
2268 {
2269         if (!use_4addr) {
2270                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2271                         return -EBUSY;
2272                 return 0;
2273         }
2274
2275         switch (iftype) {
2276         case NL80211_IFTYPE_AP_VLAN:
2277                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2278                         return 0;
2279                 break;
2280         case NL80211_IFTYPE_STATION:
2281                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2282                         return 0;
2283                 break;
2284         default:
2285                 break;
2286         }
2287
2288         return -EOPNOTSUPP;
2289 }
2290
2291 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2292 {
2293         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2294         struct vif_params params;
2295         int err;
2296         enum nl80211_iftype otype, ntype;
2297         struct net_device *dev = info->user_ptr[1];
2298         u32 _flags, *flags = NULL;
2299         bool change = false;
2300
2301         memset(&params, 0, sizeof(params));
2302
2303         otype = ntype = dev->ieee80211_ptr->iftype;
2304
2305         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2306                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2307                 if (otype != ntype)
2308                         change = true;
2309                 if (ntype > NL80211_IFTYPE_MAX)
2310                         return -EINVAL;
2311         }
2312
2313         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2314                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2315
2316                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2317                         return -EINVAL;
2318                 if (netif_running(dev))
2319                         return -EBUSY;
2320
2321                 wdev_lock(wdev);
2322                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2323                              IEEE80211_MAX_MESH_ID_LEN);
2324                 wdev->mesh_id_up_len =
2325                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2326                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2327                        wdev->mesh_id_up_len);
2328                 wdev_unlock(wdev);
2329         }
2330
2331         if (info->attrs[NL80211_ATTR_4ADDR]) {
2332                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2333                 change = true;
2334                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2335                 if (err)
2336                         return err;
2337         } else {
2338                 params.use_4addr = -1;
2339         }
2340
2341         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2342                 if (ntype != NL80211_IFTYPE_MONITOR)
2343                         return -EINVAL;
2344                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2345                                           &_flags);
2346                 if (err)
2347                         return err;
2348
2349                 flags = &_flags;
2350                 change = true;
2351         }
2352
2353         if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2354             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2355                 return -EOPNOTSUPP;
2356
2357         if (change)
2358                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2359         else
2360                 err = 0;
2361
2362         if (!err && params.use_4addr != -1)
2363                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2364
2365         return err;
2366 }
2367
2368 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2369 {
2370         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2371         struct vif_params params;
2372         struct wireless_dev *wdev;
2373         struct sk_buff *msg;
2374         int err;
2375         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2376         u32 flags;
2377
2378         memset(&params, 0, sizeof(params));
2379
2380         if (!info->attrs[NL80211_ATTR_IFNAME])
2381                 return -EINVAL;
2382
2383         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2384                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2385                 if (type > NL80211_IFTYPE_MAX)
2386                         return -EINVAL;
2387         }
2388
2389         if (!rdev->ops->add_virtual_intf ||
2390             !(rdev->wiphy.interface_modes & (1 << type)))
2391                 return -EOPNOTSUPP;
2392
2393         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2394                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2395                            ETH_ALEN);
2396                 if (!is_valid_ether_addr(params.macaddr))
2397                         return -EADDRNOTAVAIL;
2398         }
2399
2400         if (info->attrs[NL80211_ATTR_4ADDR]) {
2401                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2402                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2403                 if (err)
2404                         return err;
2405         }
2406
2407         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2408         if (!msg)
2409                 return -ENOMEM;
2410
2411         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2412                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2413                                   &flags);
2414
2415         if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2416             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2417                 return -EOPNOTSUPP;
2418
2419         wdev = rdev_add_virtual_intf(rdev,
2420                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2421                                 type, err ? NULL : &flags, &params);
2422         if (IS_ERR(wdev)) {
2423                 nlmsg_free(msg);
2424                 return PTR_ERR(wdev);
2425         }
2426
2427         switch (type) {
2428         case NL80211_IFTYPE_MESH_POINT:
2429                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2430                         break;
2431                 wdev_lock(wdev);
2432                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2433                              IEEE80211_MAX_MESH_ID_LEN);
2434                 wdev->mesh_id_up_len =
2435                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2436                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2437                        wdev->mesh_id_up_len);
2438                 wdev_unlock(wdev);
2439                 break;
2440         case NL80211_IFTYPE_P2P_DEVICE:
2441                 /*
2442                  * P2P Device doesn't have a netdev, so doesn't go
2443                  * through the netdev notifier and must be added here
2444                  */
2445                 mutex_init(&wdev->mtx);
2446                 INIT_LIST_HEAD(&wdev->event_list);
2447                 spin_lock_init(&wdev->event_lock);
2448                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2449                 spin_lock_init(&wdev->mgmt_registrations_lock);
2450
2451                 wdev->identifier = ++rdev->wdev_id;
2452                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2453                 rdev->devlist_generation++;
2454                 break;
2455         default:
2456                 break;
2457         }
2458
2459         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2460                                rdev, wdev) < 0) {
2461                 nlmsg_free(msg);
2462                 return -ENOBUFS;
2463         }
2464
2465         return genlmsg_reply(msg, info);
2466 }
2467
2468 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2469 {
2470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2471         struct wireless_dev *wdev = info->user_ptr[1];
2472
2473         if (!rdev->ops->del_virtual_intf)
2474                 return -EOPNOTSUPP;
2475
2476         /*
2477          * If we remove a wireless device without a netdev then clear
2478          * user_ptr[1] so that nl80211_post_doit won't dereference it
2479          * to check if it needs to do dev_put(). Otherwise it crashes
2480          * since the wdev has been freed, unlike with a netdev where
2481          * we need the dev_put() for the netdev to really be freed.
2482          */
2483         if (!wdev->netdev)
2484                 info->user_ptr[1] = NULL;
2485
2486         return rdev_del_virtual_intf(rdev, wdev);
2487 }
2488
2489 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2490 {
2491         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2492         struct net_device *dev = info->user_ptr[1];
2493         u16 noack_map;
2494
2495         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2496                 return -EINVAL;
2497
2498         if (!rdev->ops->set_noack_map)
2499                 return -EOPNOTSUPP;
2500
2501         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2502
2503         return rdev_set_noack_map(rdev, dev, noack_map);
2504 }
2505
2506 struct get_key_cookie {
2507         struct sk_buff *msg;
2508         int error;
2509         int idx;
2510 };
2511
2512 static void get_key_callback(void *c, struct key_params *params)
2513 {
2514         struct nlattr *key;
2515         struct get_key_cookie *cookie = c;
2516
2517         if ((params->key &&
2518              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2519                      params->key_len, params->key)) ||
2520             (params->seq &&
2521              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2522                      params->seq_len, params->seq)) ||
2523             (params->cipher &&
2524              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2525                          params->cipher)))
2526                 goto nla_put_failure;
2527
2528         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2529         if (!key)
2530                 goto nla_put_failure;
2531
2532         if ((params->key &&
2533              nla_put(cookie->msg, NL80211_KEY_DATA,
2534                      params->key_len, params->key)) ||
2535             (params->seq &&
2536              nla_put(cookie->msg, NL80211_KEY_SEQ,
2537                      params->seq_len, params->seq)) ||
2538             (params->cipher &&
2539              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2540                          params->cipher)))
2541                 goto nla_put_failure;
2542
2543         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2544                 goto nla_put_failure;
2545
2546         nla_nest_end(cookie->msg, key);
2547
2548         return;
2549  nla_put_failure:
2550         cookie->error = 1;
2551 }
2552
2553 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2554 {
2555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2556         int err;
2557         struct net_device *dev = info->user_ptr[1];
2558         u8 key_idx = 0;
2559         const u8 *mac_addr = NULL;
2560         bool pairwise;
2561         struct get_key_cookie cookie = {
2562                 .error = 0,
2563         };
2564         void *hdr;
2565         struct sk_buff *msg;
2566
2567         if (info->attrs[NL80211_ATTR_KEY_IDX])
2568                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2569
2570         if (key_idx > 5)
2571                 return -EINVAL;
2572
2573         if (info->attrs[NL80211_ATTR_MAC])
2574                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2575
2576         pairwise = !!mac_addr;
2577         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2578                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2579                 if (kt >= NUM_NL80211_KEYTYPES)
2580                         return -EINVAL;
2581                 if (kt != NL80211_KEYTYPE_GROUP &&
2582                     kt != NL80211_KEYTYPE_PAIRWISE)
2583                         return -EINVAL;
2584                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2585         }
2586
2587         if (!rdev->ops->get_key)
2588                 return -EOPNOTSUPP;
2589
2590         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2591         if (!msg)
2592                 return -ENOMEM;
2593
2594         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2595                              NL80211_CMD_NEW_KEY);
2596         if (IS_ERR(hdr))
2597                 return PTR_ERR(hdr);
2598
2599         cookie.msg = msg;
2600         cookie.idx = key_idx;
2601
2602         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2603             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2604                 goto nla_put_failure;
2605         if (mac_addr &&
2606             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2607                 goto nla_put_failure;
2608
2609         if (pairwise && mac_addr &&
2610             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2611                 return -ENOENT;
2612
2613         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2614                            get_key_callback);
2615
2616         if (err)
2617                 goto free_msg;
2618
2619         if (cookie.error)
2620                 goto nla_put_failure;
2621
2622         genlmsg_end(msg, hdr);
2623         return genlmsg_reply(msg, info);
2624
2625  nla_put_failure:
2626         err = -ENOBUFS;
2627  free_msg:
2628         nlmsg_free(msg);
2629         return err;
2630 }
2631
2632 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2633 {
2634         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2635         struct key_parse key;
2636         int err;
2637         struct net_device *dev = info->user_ptr[1];
2638
2639         err = nl80211_parse_key(info, &key);
2640         if (err)
2641                 return err;
2642
2643         if (key.idx < 0)
2644                 return -EINVAL;
2645
2646         /* only support setting default key */
2647         if (!key.def && !key.defmgmt)
2648                 return -EINVAL;
2649
2650         wdev_lock(dev->ieee80211_ptr);
2651
2652         if (key.def) {
2653                 if (!rdev->ops->set_default_key) {
2654                         err = -EOPNOTSUPP;
2655                         goto out;
2656                 }
2657
2658                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2659                 if (err)
2660                         goto out;
2661
2662                 err = rdev_set_default_key(rdev, dev, key.idx,
2663                                                  key.def_uni, key.def_multi);
2664
2665                 if (err)
2666                         goto out;
2667
2668 #ifdef CONFIG_CFG80211_WEXT
2669                 dev->ieee80211_ptr->wext.default_key = key.idx;
2670 #endif
2671         } else {
2672                 if (key.def_uni || !key.def_multi) {
2673                         err = -EINVAL;
2674                         goto out;
2675                 }
2676
2677                 if (!rdev->ops->set_default_mgmt_key) {
2678                         err = -EOPNOTSUPP;
2679                         goto out;
2680                 }
2681
2682                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2683                 if (err)
2684                         goto out;
2685
2686                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2687                 if (err)
2688                         goto out;
2689
2690 #ifdef CONFIG_CFG80211_WEXT
2691                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2692 #endif
2693         }
2694
2695  out:
2696         wdev_unlock(dev->ieee80211_ptr);
2697
2698         return err;
2699 }
2700
2701 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2702 {
2703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2704         int err;
2705         struct net_device *dev = info->user_ptr[1];
2706         struct key_parse key;
2707         const u8 *mac_addr = NULL;
2708
2709         err = nl80211_parse_key(info, &key);
2710         if (err)
2711                 return err;
2712
2713         if (!key.p.key)
2714                 return -EINVAL;
2715
2716         if (info->attrs[NL80211_ATTR_MAC])
2717                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2718
2719         if (key.type == -1) {
2720                 if (mac_addr)
2721                         key.type = NL80211_KEYTYPE_PAIRWISE;
2722                 else
2723                         key.type = NL80211_KEYTYPE_GROUP;
2724         }
2725
2726         /* for now */
2727         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2728             key.type != NL80211_KEYTYPE_GROUP)
2729                 return -EINVAL;
2730
2731         if (!rdev->ops->add_key)
2732                 return -EOPNOTSUPP;
2733
2734         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2735                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2736                                            mac_addr))
2737                 return -EINVAL;
2738
2739         wdev_lock(dev->ieee80211_ptr);
2740         err = nl80211_key_allowed(dev->ieee80211_ptr);
2741         if (!err)
2742                 err = rdev_add_key(rdev, dev, key.idx,
2743                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2744                                     mac_addr, &key.p);
2745         wdev_unlock(dev->ieee80211_ptr);
2746
2747         return err;
2748 }
2749
2750 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2751 {
2752         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2753         int err;
2754         struct net_device *dev = info->user_ptr[1];
2755         u8 *mac_addr = NULL;
2756         struct key_parse key;
2757
2758         err = nl80211_parse_key(info, &key);
2759         if (err)
2760                 return err;
2761
2762         if (info->attrs[NL80211_ATTR_MAC])
2763                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2764
2765         if (key.type == -1) {
2766                 if (mac_addr)
2767                         key.type = NL80211_KEYTYPE_PAIRWISE;
2768                 else
2769                         key.type = NL80211_KEYTYPE_GROUP;
2770         }
2771
2772         /* for now */
2773         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2774             key.type != NL80211_KEYTYPE_GROUP)
2775                 return -EINVAL;
2776
2777         if (!rdev->ops->del_key)
2778                 return -EOPNOTSUPP;
2779
2780         wdev_lock(dev->ieee80211_ptr);
2781         err = nl80211_key_allowed(dev->ieee80211_ptr);
2782
2783         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2784             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2785                 err = -ENOENT;
2786
2787         if (!err)
2788                 err = rdev_del_key(rdev, dev, key.idx,
2789                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2790                                    mac_addr);
2791
2792 #ifdef CONFIG_CFG80211_WEXT
2793         if (!err) {
2794                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2795                         dev->ieee80211_ptr->wext.default_key = -1;
2796                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2797                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2798         }
2799 #endif
2800         wdev_unlock(dev->ieee80211_ptr);
2801
2802         return err;
2803 }
2804
2805 /* This function returns an error or the number of nested attributes */
2806 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2807 {
2808         struct nlattr *attr;
2809         int n_entries = 0, tmp;
2810
2811         nla_for_each_nested(attr, nl_attr, tmp) {
2812                 if (nla_len(attr) != ETH_ALEN)
2813                         return -EINVAL;
2814
2815                 n_entries++;
2816         }
2817
2818         return n_entries;
2819 }
2820
2821 /*
2822  * This function parses ACL information and allocates memory for ACL data.
2823  * On successful return, the calling function is responsible to free the
2824  * ACL buffer returned by this function.
2825  */
2826 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2827                                                 struct genl_info *info)
2828 {
2829         enum nl80211_acl_policy acl_policy;
2830         struct nlattr *attr;
2831         struct cfg80211_acl_data *acl;
2832         int i = 0, n_entries, tmp;
2833
2834         if (!wiphy->max_acl_mac_addrs)
2835                 return ERR_PTR(-EOPNOTSUPP);
2836
2837         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2838                 return ERR_PTR(-EINVAL);
2839
2840         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2841         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2842             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2843                 return ERR_PTR(-EINVAL);
2844
2845         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2846                 return ERR_PTR(-EINVAL);
2847
2848         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2849         if (n_entries < 0)
2850                 return ERR_PTR(n_entries);
2851
2852         if (n_entries > wiphy->max_acl_mac_addrs)
2853                 return ERR_PTR(-ENOTSUPP);
2854
2855         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2856                       GFP_KERNEL);
2857         if (!acl)
2858                 return ERR_PTR(-ENOMEM);
2859
2860         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2861                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2862                 i++;
2863         }
2864
2865         acl->n_acl_entries = n_entries;
2866         acl->acl_policy = acl_policy;
2867
2868         return acl;
2869 }
2870
2871 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2872 {
2873         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2874         struct net_device *dev = info->user_ptr[1];
2875         struct cfg80211_acl_data *acl;
2876         int err;
2877
2878         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2879             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2880                 return -EOPNOTSUPP;
2881
2882         if (!dev->ieee80211_ptr->beacon_interval)
2883                 return -EINVAL;
2884
2885         acl = parse_acl_data(&rdev->wiphy, info);
2886         if (IS_ERR(acl))
2887                 return PTR_ERR(acl);
2888
2889         err = rdev_set_mac_acl(rdev, dev, acl);
2890
2891         kfree(acl);
2892
2893         return err;
2894 }
2895
2896 static int nl80211_parse_beacon(struct genl_info *info,
2897                                 struct cfg80211_beacon_data *bcn)
2898 {
2899         bool haveinfo = false;
2900
2901         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2902             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2903             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2904             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2905                 return -EINVAL;
2906
2907         memset(bcn, 0, sizeof(*bcn));
2908
2909         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2910                 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2911                 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2912                 if (!bcn->head_len)
2913                         return -EINVAL;
2914                 haveinfo = true;
2915         }
2916
2917         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2918                 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2919                 bcn->tail_len =
2920                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2921                 haveinfo = true;
2922         }
2923
2924         if (!haveinfo)
2925                 return -EINVAL;
2926
2927         if (info->attrs[NL80211_ATTR_IE]) {
2928                 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2929                 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2930         }
2931
2932         if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2933                 bcn->proberesp_ies =
2934                         nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2935                 bcn->proberesp_ies_len =
2936                         nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2937         }
2938
2939         if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2940                 bcn->assocresp_ies =
2941                         nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2942                 bcn->assocresp_ies_len =
2943                         nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2944         }
2945
2946         if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2947                 bcn->probe_resp =
2948                         nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2949                 bcn->probe_resp_len =
2950                         nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2951         }
2952
2953         return 0;
2954 }
2955
2956 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2957                                    struct cfg80211_ap_settings *params)
2958 {
2959         struct wireless_dev *wdev;
2960         bool ret = false;
2961
2962         list_for_each_entry(wdev, &rdev->wdev_list, list) {
2963                 if (wdev->iftype != NL80211_IFTYPE_AP &&
2964                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
2965                         continue;
2966
2967                 if (!wdev->preset_chandef.chan)
2968                         continue;
2969
2970                 params->chandef = wdev->preset_chandef;
2971                 ret = true;
2972                 break;
2973         }
2974
2975         return ret;
2976 }
2977
2978 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
2979                                     enum nl80211_auth_type auth_type,
2980                                     enum nl80211_commands cmd)
2981 {
2982         if (auth_type > NL80211_AUTHTYPE_MAX)
2983                 return false;
2984
2985         switch (cmd) {
2986         case NL80211_CMD_AUTHENTICATE:
2987                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
2988                     auth_type == NL80211_AUTHTYPE_SAE)
2989                         return false;
2990                 return true;
2991         case NL80211_CMD_CONNECT:
2992         case NL80211_CMD_START_AP:
2993                 /* SAE not supported yet */
2994                 if (auth_type == NL80211_AUTHTYPE_SAE)
2995                         return false;
2996                 return true;
2997         default:
2998                 return false;
2999         }
3000 }
3001
3002 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3003 {
3004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3005         struct net_device *dev = info->user_ptr[1];
3006         struct wireless_dev *wdev = dev->ieee80211_ptr;
3007         struct cfg80211_ap_settings params;
3008         int err;
3009         u8 radar_detect_width = 0;
3010
3011         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3012             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3013                 return -EOPNOTSUPP;
3014
3015         if (!rdev->ops->start_ap)
3016                 return -EOPNOTSUPP;
3017
3018         if (wdev->beacon_interval)
3019                 return -EALREADY;
3020
3021         memset(&params, 0, sizeof(params));
3022
3023         /* these are required for START_AP */
3024         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3025             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3026             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3027                 return -EINVAL;
3028
3029         err = nl80211_parse_beacon(info, &params.beacon);
3030         if (err)
3031                 return err;
3032
3033         params.beacon_interval =
3034                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3035         params.dtim_period =
3036                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3037
3038         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3039         if (err)
3040                 return err;
3041
3042         /*
3043          * In theory, some of these attributes should be required here
3044          * but since they were not used when the command was originally
3045          * added, keep them optional for old user space programs to let
3046          * them continue to work with drivers that do not need the
3047          * additional information -- drivers must check!
3048          */
3049         if (info->attrs[NL80211_ATTR_SSID]) {
3050                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3051                 params.ssid_len =
3052                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3053                 if (params.ssid_len == 0 ||
3054                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3055                         return -EINVAL;
3056         }
3057
3058         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3059                 params.hidden_ssid = nla_get_u32(
3060                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3061                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3062                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3063                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3064                         return -EINVAL;
3065         }
3066
3067         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3068
3069         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3070                 params.auth_type = nla_get_u32(
3071                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3072                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3073                                              NL80211_CMD_START_AP))
3074                         return -EINVAL;
3075         } else
3076                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3077
3078         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3079                                       NL80211_MAX_NR_CIPHER_SUITES);
3080         if (err)
3081                 return err;
3082
3083         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3084                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3085                         return -EOPNOTSUPP;
3086                 params.inactivity_timeout = nla_get_u16(
3087                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3088         }
3089
3090         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3091                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3092                         return -EINVAL;
3093                 params.p2p_ctwindow =
3094                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3095                 if (params.p2p_ctwindow > 127)
3096                         return -EINVAL;
3097                 if (params.p2p_ctwindow != 0 &&
3098                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3099                         return -EINVAL;
3100         }
3101
3102         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3103                 u8 tmp;
3104
3105                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3106                         return -EINVAL;
3107                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3108                 if (tmp > 1)
3109                         return -EINVAL;
3110                 params.p2p_opp_ps = tmp;
3111                 if (params.p2p_opp_ps != 0 &&
3112                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3113                         return -EINVAL;
3114         }
3115
3116         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3117                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3118                 if (err)
3119                         return err;
3120         } else if (wdev->preset_chandef.chan) {
3121                 params.chandef = wdev->preset_chandef;
3122         } else if (!nl80211_get_ap_channel(rdev, &params))
3123                 return -EINVAL;
3124
3125         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3126                 return -EINVAL;
3127
3128         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3129         if (err < 0)
3130                 return err;
3131         if (err) {
3132                 radar_detect_width = BIT(params.chandef.width);
3133                 params.radar_required = true;
3134         }
3135
3136         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3137                                            params.chandef.chan,
3138                                            CHAN_MODE_SHARED,
3139                                            radar_detect_width);
3140         if (err)
3141                 return err;
3142
3143         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3144                 params.acl = parse_acl_data(&rdev->wiphy, info);
3145                 if (IS_ERR(params.acl))
3146                         return PTR_ERR(params.acl);
3147         }
3148
3149         err = rdev_start_ap(rdev, dev, &params);
3150         if (!err) {
3151                 wdev->preset_chandef = params.chandef;
3152                 wdev->beacon_interval = params.beacon_interval;
3153                 wdev->channel = params.chandef.chan;
3154                 wdev->ssid_len = params.ssid_len;
3155                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3156         }
3157
3158         kfree(params.acl);
3159
3160         return err;
3161 }
3162
3163 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3164 {
3165         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3166         struct net_device *dev = info->user_ptr[1];
3167         struct wireless_dev *wdev = dev->ieee80211_ptr;
3168         struct cfg80211_beacon_data params;
3169         int err;
3170
3171         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3172             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3173                 return -EOPNOTSUPP;
3174
3175         if (!rdev->ops->change_beacon)
3176                 return -EOPNOTSUPP;
3177
3178         if (!wdev->beacon_interval)
3179                 return -EINVAL;
3180
3181         err = nl80211_parse_beacon(info, &params);
3182         if (err)
3183                 return err;
3184
3185         return rdev_change_beacon(rdev, dev, &params);
3186 }
3187
3188 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3189 {
3190         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3191         struct net_device *dev = info->user_ptr[1];
3192
3193         return cfg80211_stop_ap(rdev, dev);
3194 }
3195
3196 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3197         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3198         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3199         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3200         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3201         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3202         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3203 };
3204
3205 static int parse_station_flags(struct genl_info *info,
3206                                enum nl80211_iftype iftype,
3207                                struct station_parameters *params)
3208 {
3209         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3210         struct nlattr *nla;
3211         int flag;
3212
3213         /*
3214          * Try parsing the new attribute first so userspace
3215          * can specify both for older kernels.
3216          */
3217         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3218         if (nla) {
3219                 struct nl80211_sta_flag_update *sta_flags;
3220
3221                 sta_flags = nla_data(nla);
3222                 params->sta_flags_mask = sta_flags->mask;
3223                 params->sta_flags_set = sta_flags->set;
3224                 params->sta_flags_set &= params->sta_flags_mask;
3225                 if ((params->sta_flags_mask |
3226                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3227                         return -EINVAL;
3228                 return 0;
3229         }
3230
3231         /* if present, parse the old attribute */
3232
3233         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3234         if (!nla)
3235                 return 0;
3236
3237         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3238                              nla, sta_flags_policy))
3239                 return -EINVAL;
3240
3241         /*
3242          * Only allow certain flags for interface types so that
3243          * other attributes are silently ignored. Remember that
3244          * this is backward compatibility code with old userspace
3245          * and shouldn't be hit in other cases anyway.
3246          */
3247         switch (iftype) {
3248         case NL80211_IFTYPE_AP:
3249         case NL80211_IFTYPE_AP_VLAN:
3250         case NL80211_IFTYPE_P2P_GO:
3251                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3252                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3253                                          BIT(NL80211_STA_FLAG_WME) |
3254                                          BIT(NL80211_STA_FLAG_MFP);
3255                 break;
3256         case NL80211_IFTYPE_P2P_CLIENT:
3257         case NL80211_IFTYPE_STATION:
3258                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3259                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3260                 break;
3261         case NL80211_IFTYPE_MESH_POINT:
3262                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3263                                          BIT(NL80211_STA_FLAG_MFP) |
3264                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3265         default:
3266                 return -EINVAL;
3267         }
3268
3269         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3270                 if (flags[flag]) {
3271                         params->sta_flags_set |= (1<<flag);
3272
3273                         /* no longer support new API additions in old API */
3274                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3275                                 return -EINVAL;
3276                 }
3277         }
3278
3279         return 0;
3280 }
3281
3282 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3283                                  int attr)
3284 {
3285         struct nlattr *rate;
3286         u32 bitrate;
3287         u16 bitrate_compat;
3288
3289         rate = nla_nest_start(msg, attr);
3290         if (!rate)
3291                 return false;
3292
3293         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3294         bitrate = cfg80211_calculate_bitrate(info);
3295         /* report 16-bit bitrate only if we can */
3296         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3297         if (bitrate > 0 &&
3298             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3299                 return false;
3300         if (bitrate_compat > 0 &&
3301             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3302                 return false;
3303
3304         if (info->flags & RATE_INFO_FLAGS_MCS) {
3305                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3306                         return false;
3307                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3308                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3309                         return false;
3310                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3311                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3312                         return false;
3313         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3314                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3315                         return false;
3316                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3317                         return false;
3318                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3319                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3320                         return false;
3321                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3322                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3323                         return false;
3324                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3325                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3326                         return false;
3327                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3328                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3329                         return false;
3330                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3331                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3332                         return false;
3333         }
3334
3335         nla_nest_end(msg, rate);
3336         return true;
3337 }
3338
3339 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3340                                int id)
3341 {
3342         void *attr;
3343         int i = 0;
3344
3345         if (!mask)
3346                 return true;
3347
3348         attr = nla_nest_start(msg, id);
3349         if (!attr)
3350                 return false;
3351
3352         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3353                 if (!(mask & BIT(i)))
3354                         continue;
3355
3356                 if (nla_put_u8(msg, i, signal[i]))
3357                         return false;
3358         }
3359
3360         nla_nest_end(msg, attr);
3361
3362         return true;
3363 }
3364
3365 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3366                                 int flags,
3367                                 struct cfg80211_registered_device *rdev,
3368                                 struct net_device *dev,
3369                                 const u8 *mac_addr, struct station_info *sinfo)
3370 {
3371         void *hdr;
3372         struct nlattr *sinfoattr, *bss_param;
3373
3374         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3375         if (!hdr)
3376                 return -1;
3377
3378         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3379             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3380             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3381                 goto nla_put_failure;
3382
3383         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3384         if (!sinfoattr)
3385                 goto nla_put_failure;
3386         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3387             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3388                         sinfo->connected_time))
3389                 goto nla_put_failure;
3390         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3391             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3392                         sinfo->inactive_time))
3393                 goto nla_put_failure;
3394         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3395                               STATION_INFO_RX_BYTES64)) &&
3396             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3397                         (u32)sinfo->rx_bytes))
3398                 goto nla_put_failure;
3399         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3400                               STATION_INFO_TX_BYTES64)) &&
3401             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3402                         (u32)sinfo->tx_bytes))
3403                 goto nla_put_failure;
3404         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3405             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3406                         sinfo->rx_bytes))
3407                 goto nla_put_failure;
3408         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3409             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3410                         sinfo->tx_bytes))
3411                 goto nla_put_failure;
3412         if ((sinfo->filled & STATION_INFO_LLID) &&
3413             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3414                 goto nla_put_failure;
3415         if ((sinfo->filled & STATION_INFO_PLID) &&
3416             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3417                 goto nla_put_failure;
3418         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3419             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3420                        sinfo->plink_state))
3421                 goto nla_put_failure;
3422         switch (rdev->wiphy.signal_type) {
3423         case CFG80211_SIGNAL_TYPE_MBM:
3424                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3425                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3426                                sinfo->signal))
3427                         goto nla_put_failure;
3428                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3429                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3430                                sinfo->signal_avg))
3431                         goto nla_put_failure;
3432                 break;
3433         default:
3434                 break;
3435         }
3436         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3437                 if (!nl80211_put_signal(msg, sinfo->chains,
3438                                         sinfo->chain_signal,
3439                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3440                         goto nla_put_failure;
3441         }
3442         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3443                 if (!nl80211_put_signal(msg, sinfo->chains,
3444                                         sinfo->chain_signal_avg,
3445                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3446                         goto nla_put_failure;
3447         }
3448         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3449                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3450                                           NL80211_STA_INFO_TX_BITRATE))
3451                         goto nla_put_failure;
3452         }
3453         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3454                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3455                                           NL80211_STA_INFO_RX_BITRATE))
3456                         goto nla_put_failure;
3457         }
3458         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3459             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3460                         sinfo->rx_packets))
3461                 goto nla_put_failure;
3462         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3463             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3464                         sinfo->tx_packets))
3465                 goto nla_put_failure;
3466         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3467             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3468                         sinfo->tx_retries))
3469                 goto nla_put_failure;
3470         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3471             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3472                         sinfo->tx_failed))
3473                 goto nla_put_failure;
3474         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3475             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3476                         sinfo->beacon_loss_count))
3477                 goto nla_put_failure;
3478         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3479             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3480                         sinfo->local_pm))
3481                 goto nla_put_failure;
3482         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3483             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3484                         sinfo->peer_pm))
3485                 goto nla_put_failure;
3486         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3487             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3488                         sinfo->nonpeer_pm))
3489                 goto nla_put_failure;
3490         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3491                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3492                 if (!bss_param)
3493                         goto nla_put_failure;
3494
3495                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3496                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3497                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3498                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3499                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3500                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3501                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3502                                sinfo->bss_param.dtim_period) ||
3503                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3504                                 sinfo->bss_param.beacon_interval))
3505                         goto nla_put_failure;
3506
3507                 nla_nest_end(msg, bss_param);
3508         }
3509         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3510             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3511                     sizeof(struct nl80211_sta_flag_update),
3512                     &sinfo->sta_flags))
3513                 goto nla_put_failure;
3514         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3515                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3516                             sinfo->t_offset))
3517                 goto nla_put_failure;
3518         nla_nest_end(msg, sinfoattr);
3519
3520         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3521             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3522                     sinfo->assoc_req_ies))
3523                 goto nla_put_failure;
3524
3525         return genlmsg_end(msg, hdr);
3526
3527  nla_put_failure:
3528         genlmsg_cancel(msg, hdr);
3529         return -EMSGSIZE;
3530 }
3531
3532 static int nl80211_dump_station(struct sk_buff *skb,
3533                                 struct netlink_callback *cb)
3534 {
3535         struct station_info sinfo;
3536         struct cfg80211_registered_device *dev;
3537         struct wireless_dev *wdev;
3538         u8 mac_addr[ETH_ALEN];
3539         int sta_idx = cb->args[2];
3540         int err;
3541
3542         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3543         if (err)
3544                 return err;
3545
3546         if (!wdev->netdev) {
3547                 err = -EINVAL;
3548                 goto out_err;
3549         }
3550
3551         if (!dev->ops->dump_station) {
3552                 err = -EOPNOTSUPP;
3553                 goto out_err;
3554         }
3555
3556         while (1) {
3557                 memset(&sinfo, 0, sizeof(sinfo));
3558                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3559                                         mac_addr, &sinfo);
3560                 if (err == -ENOENT)
3561                         break;
3562                 if (err)
3563                         goto out_err;
3564
3565                 if (nl80211_send_station(skb,
3566                                 NETLINK_CB(cb->skb).portid,
3567                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3568                                 dev, wdev->netdev, mac_addr,
3569                                 &sinfo) < 0)
3570                         goto out;
3571
3572                 sta_idx++;
3573         }
3574
3575
3576  out:
3577         cb->args[2] = sta_idx;
3578         err = skb->len;
3579  out_err:
3580         nl80211_finish_wdev_dump(dev);
3581
3582         return err;
3583 }
3584
3585 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3586 {
3587         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3588         struct net_device *dev = info->user_ptr[1];
3589         struct station_info sinfo;
3590         struct sk_buff *msg;
3591         u8 *mac_addr = NULL;
3592         int err;
3593
3594         memset(&sinfo, 0, sizeof(sinfo));
3595
3596         if (!info->attrs[NL80211_ATTR_MAC])
3597                 return -EINVAL;
3598
3599         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3600
3601         if (!rdev->ops->get_station)
3602                 return -EOPNOTSUPP;
3603
3604         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3605         if (err)
3606                 return err;
3607
3608         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3609         if (!msg)
3610                 return -ENOMEM;
3611
3612         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3613                                  rdev, dev, mac_addr, &sinfo) < 0) {
3614                 nlmsg_free(msg);
3615                 return -ENOBUFS;
3616         }
3617
3618         return genlmsg_reply(msg, info);
3619 }
3620
3621 int cfg80211_check_station_change(struct wiphy *wiphy,
3622                                   struct station_parameters *params,
3623                                   enum cfg80211_station_type statype)
3624 {
3625         if (params->listen_interval != -1)
3626                 return -EINVAL;
3627         if (params->aid)
3628                 return -EINVAL;
3629
3630         /* When you run into this, adjust the code below for the new flag */
3631         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3632
3633         switch (statype) {
3634         case CFG80211_STA_MESH_PEER_KERNEL:
3635         case CFG80211_STA_MESH_PEER_USER:
3636                 /*
3637                  * No ignoring the TDLS flag here -- the userspace mesh
3638                  * code doesn't have the bug of including TDLS in the
3639                  * mask everywhere.
3640                  */
3641                 if (params->sta_flags_mask &
3642                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3643                                   BIT(NL80211_STA_FLAG_MFP) |
3644                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3645                         return -EINVAL;
3646                 break;
3647         case CFG80211_STA_TDLS_PEER_SETUP:
3648         case CFG80211_STA_TDLS_PEER_ACTIVE:
3649                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3650                         return -EINVAL;
3651                 /* ignore since it can't change */
3652                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3653                 break;
3654         default:
3655                 /* disallow mesh-specific things */
3656                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3657                         return -EINVAL;
3658                 if (params->local_pm)
3659                         return -EINVAL;
3660                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3661                         return -EINVAL;
3662         }
3663
3664         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3665             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3666                 /* TDLS can't be set, ... */
3667                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3668                         return -EINVAL;
3669                 /*
3670                  * ... but don't bother the driver with it. This works around
3671                  * a hostapd/wpa_supplicant issue -- it always includes the
3672                  * TLDS_PEER flag in the mask even for AP mode.
3673                  */
3674                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3675         }
3676
3677         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3678                 /* reject other things that can't change */
3679                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3680                         return -EINVAL;
3681                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3682                         return -EINVAL;
3683                 if (params->supported_rates)
3684                         return -EINVAL;
3685                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3686                         return -EINVAL;
3687         }
3688
3689         if (statype != CFG80211_STA_AP_CLIENT) {
3690                 if (params->vlan)
3691                         return -EINVAL;
3692         }
3693
3694         switch (statype) {
3695         case CFG80211_STA_AP_MLME_CLIENT:
3696                 /* Use this only for authorizing/unauthorizing a station */
3697                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3698                         return -EOPNOTSUPP;
3699                 break;
3700         case CFG80211_STA_AP_CLIENT:
3701                 /* accept only the listed bits */
3702                 if (params->sta_flags_mask &
3703                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3704                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3705                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3706                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3707                                   BIT(NL80211_STA_FLAG_WME) |
3708                                   BIT(NL80211_STA_FLAG_MFP)))
3709                         return -EINVAL;
3710
3711                 /* but authenticated/associated only if driver handles it */
3712                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3713                     params->sta_flags_mask &
3714                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3715                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3716                         return -EINVAL;
3717                 break;
3718         case CFG80211_STA_IBSS:
3719         case CFG80211_STA_AP_STA:
3720                 /* reject any changes other than AUTHORIZED */
3721                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3722                         return -EINVAL;
3723                 break;
3724         case CFG80211_STA_TDLS_PEER_SETUP:
3725                 /* reject any changes other than AUTHORIZED or WME */
3726                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3727                                                BIT(NL80211_STA_FLAG_WME)))
3728                         return -EINVAL;
3729                 /* force (at least) rates when authorizing */
3730                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3731                     !params->supported_rates)
3732                         return -EINVAL;
3733                 break;
3734         case CFG80211_STA_TDLS_PEER_ACTIVE:
3735                 /* reject any changes */
3736                 return -EINVAL;
3737         case CFG80211_STA_MESH_PEER_KERNEL:
3738                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3739                         return -EINVAL;
3740                 break;
3741         case CFG80211_STA_MESH_PEER_USER:
3742                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3743                         return -EINVAL;
3744                 break;
3745         }
3746
3747         return 0;
3748 }
3749 EXPORT_SYMBOL(cfg80211_check_station_change);
3750
3751 /*
3752  * Get vlan interface making sure it is running and on the right wiphy.
3753  */
3754 static struct net_device *get_vlan(struct genl_info *info,
3755                                    struct cfg80211_registered_device *rdev)
3756 {
3757         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3758         struct net_device *v;
3759         int ret;
3760
3761         if (!vlanattr)
3762                 return NULL;
3763
3764         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3765         if (!v)
3766                 return ERR_PTR(-ENODEV);
3767
3768         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3769                 ret = -EINVAL;
3770                 goto error;
3771         }
3772
3773         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3774             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3775             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3776                 ret = -EINVAL;
3777                 goto error;
3778         }
3779
3780         if (!netif_running(v)) {
3781                 ret = -ENETDOWN;
3782                 goto error;
3783         }
3784
3785         return v;
3786  error:
3787         dev_put(v);
3788         return ERR_PTR(ret);
3789 }
3790
3791 static struct nla_policy
3792 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3793         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3794         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3795 };
3796
3797 static int nl80211_parse_sta_wme(struct genl_info *info,
3798                                  struct station_parameters *params)
3799 {
3800         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3801         struct nlattr *nla;
3802         int err;
3803
3804         /* parse WME attributes if present */
3805         if (!info->attrs[NL80211_ATTR_STA_WME])
3806                 return 0;
3807
3808         nla = info->attrs[NL80211_ATTR_STA_WME];
3809         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3810                                nl80211_sta_wme_policy);
3811         if (err)
3812                 return err;
3813
3814         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3815                 params->uapsd_queues = nla_get_u8(
3816                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3817         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3818                 return -EINVAL;
3819
3820         if (tb[NL80211_STA_WME_MAX_SP])
3821                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3822
3823         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3824                 return -EINVAL;
3825
3826         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3827
3828         return 0;
3829 }
3830
3831 static int nl80211_set_station_tdls(struct genl_info *info,
3832                                     struct station_parameters *params)
3833 {
3834         /* Dummy STA entry gets updated once the peer capabilities are known */
3835         if (info->attrs[NL80211_ATTR_PEER_AID])
3836                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3837         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3838                 params->ht_capa =
3839                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3840         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3841                 params->vht_capa =
3842                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3843
3844         return nl80211_parse_sta_wme(info, params);
3845 }
3846
3847 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3848 {
3849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3850         struct net_device *dev = info->user_ptr[1];
3851         struct station_parameters params;
3852         u8 *mac_addr;
3853         int err;
3854
3855         memset(&params, 0, sizeof(params));
3856
3857         params.listen_interval = -1;
3858
3859         if (!rdev->ops->change_station)
3860                 return -EOPNOTSUPP;
3861
3862         if (info->attrs[NL80211_ATTR_STA_AID])
3863                 return -EINVAL;
3864
3865         if (!info->attrs[NL80211_ATTR_MAC])
3866                 return -EINVAL;
3867
3868         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3869
3870         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3871                 params.supported_rates =
3872                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3873                 params.supported_rates_len =
3874                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3875         }
3876
3877         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3878                 params.capability =
3879                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3880                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3881         }
3882
3883         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3884                 params.ext_capab =
3885                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3886                 params.ext_capab_len =
3887                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3888         }
3889
3890         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3891                 return -EINVAL;
3892
3893         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3894                 return -EINVAL;
3895
3896         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3897                 params.plink_action =
3898                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3899                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3900                         return -EINVAL;
3901         }
3902
3903         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3904                 params.plink_state =
3905                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3906                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3907                         return -EINVAL;
3908                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3909         }
3910
3911         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3912                 enum nl80211_mesh_power_mode pm = nla_get_u32(
3913                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3914
3915                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3916                     pm > NL80211_MESH_POWER_MAX)
3917                         return -EINVAL;
3918
3919                 params.local_pm = pm;
3920         }
3921
3922         /* Include parameters for TDLS peer (will check later) */
3923         err = nl80211_set_station_tdls(info, &params);
3924         if (err)
3925                 return err;
3926
3927         params.vlan = get_vlan(info, rdev);
3928         if (IS_ERR(params.vlan))
3929                 return PTR_ERR(params.vlan);
3930
3931         switch (dev->ieee80211_ptr->iftype) {
3932         case NL80211_IFTYPE_AP:
3933         case NL80211_IFTYPE_AP_VLAN:
3934         case NL80211_IFTYPE_P2P_GO:
3935         case NL80211_IFTYPE_P2P_CLIENT:
3936         case NL80211_IFTYPE_STATION:
3937         case NL80211_IFTYPE_ADHOC:
3938         case NL80211_IFTYPE_MESH_POINT:
3939                 break;
3940         default:
3941                 err = -EOPNOTSUPP;
3942                 goto out_put_vlan;
3943         }
3944
3945         /* driver will call cfg80211_check_station_change() */
3946         err = rdev_change_station(rdev, dev, mac_addr, &params);
3947
3948  out_put_vlan:
3949         if (params.vlan)
3950                 dev_put(params.vlan);
3951
3952         return err;
3953 }
3954
3955 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3956 {
3957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3958         int err;
3959         struct net_device *dev = info->user_ptr[1];
3960         struct station_parameters params;
3961         u8 *mac_addr = NULL;
3962
3963         memset(&params, 0, sizeof(params));
3964
3965         if (!rdev->ops->add_station)
3966                 return -EOPNOTSUPP;
3967
3968         if (!info->attrs[NL80211_ATTR_MAC])
3969                 return -EINVAL;
3970
3971         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3972                 return -EINVAL;
3973
3974         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3975                 return -EINVAL;
3976
3977         if (!info->attrs[NL80211_ATTR_STA_AID] &&
3978             !info->attrs[NL80211_ATTR_PEER_AID])
3979                 return -EINVAL;
3980
3981         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3982         params.supported_rates =
3983                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3984         params.supported_rates_len =
3985                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3986         params.listen_interval =
3987                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3988
3989         if (info->attrs[NL80211_ATTR_STA_AID])
3990                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3991         else
3992                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3993         if (!params.aid || params.aid > IEEE80211_MAX_AID)
3994                 return -EINVAL;
3995
3996         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3997                 params.capability =
3998                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3999                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4000         }
4001
4002         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4003                 params.ext_capab =
4004                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4005                 params.ext_capab_len =
4006                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4007         }
4008
4009         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4010                 params.ht_capa =
4011                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4012
4013         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4014                 params.vht_capa =
4015                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4016
4017         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4018                 params.plink_action =
4019                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4020                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4021                         return -EINVAL;
4022         }
4023
4024         err = nl80211_parse_sta_wme(info, &params);
4025         if (err)
4026                 return err;
4027
4028         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4029                 return -EINVAL;
4030
4031         /* When you run into this, adjust the code below for the new flag */
4032         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4033
4034         switch (dev->ieee80211_ptr->iftype) {
4035         case NL80211_IFTYPE_AP:
4036         case NL80211_IFTYPE_AP_VLAN:
4037         case NL80211_IFTYPE_P2P_GO:
4038                 /* ignore WME attributes if iface/sta is not capable */
4039                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4040                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4041                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4042
4043                 /* TDLS peers cannot be added */
4044                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4045                         return -EINVAL;
4046                 /* but don't bother the driver with it */
4047                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4048
4049                 /* allow authenticated/associated only if driver handles it */
4050                 if (!(rdev->wiphy.features &
4051                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4052                     params.sta_flags_mask &
4053                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4054                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4055                         return -EINVAL;
4056
4057                 /* must be last in here for error handling */
4058                 params.vlan = get_vlan(info, rdev);
4059                 if (IS_ERR(params.vlan))
4060                         return PTR_ERR(params.vlan);
4061                 break;
4062         case NL80211_IFTYPE_MESH_POINT:
4063                 /* ignore uAPSD data */
4064                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4065
4066                 /* associated is disallowed */
4067                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4068                         return -EINVAL;
4069                 /* TDLS peers cannot be added */
4070                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
4071                         return -EINVAL;
4072                 break;
4073         case NL80211_IFTYPE_STATION:
4074         case NL80211_IFTYPE_P2P_CLIENT:
4075                 /* ignore uAPSD data */
4076                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4077
4078                 /* these are disallowed */
4079                 if (params.sta_flags_mask &
4080                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4081                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4082                         return -EINVAL;
4083                 /* Only TDLS peers can be added */
4084                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4085                         return -EINVAL;
4086                 /* Can only add if TDLS ... */
4087                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4088                         return -EOPNOTSUPP;
4089                 /* ... with external setup is supported */
4090                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4091                         return -EOPNOTSUPP;
4092                 /*
4093                  * Older wpa_supplicant versions always mark the TDLS peer
4094                  * as authorized, but it shouldn't yet be.
4095                  */
4096                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4097                 break;
4098         default:
4099                 return -EOPNOTSUPP;
4100         }
4101
4102         /* be aware of params.vlan when changing code here */
4103
4104         err = rdev_add_station(rdev, dev, mac_addr, &params);
4105
4106         if (params.vlan)
4107                 dev_put(params.vlan);
4108         return err;
4109 }
4110
4111 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4112 {
4113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4114         struct net_device *dev = info->user_ptr[1];
4115         u8 *mac_addr = NULL;
4116
4117         if (info->attrs[NL80211_ATTR_MAC])
4118                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4119
4120         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4121             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4122             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4123             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4124                 return -EINVAL;
4125
4126         if (!rdev->ops->del_station)
4127                 return -EOPNOTSUPP;
4128
4129         return rdev_del_station(rdev, dev, mac_addr);
4130 }
4131
4132 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4133                                 int flags, struct net_device *dev,
4134                                 u8 *dst, u8 *next_hop,
4135                                 struct mpath_info *pinfo)
4136 {
4137         void *hdr;
4138         struct nlattr *pinfoattr;
4139
4140         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4141         if (!hdr)
4142                 return -1;
4143
4144         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4145             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4146             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4147             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4148                 goto nla_put_failure;
4149
4150         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4151         if (!pinfoattr)
4152                 goto nla_put_failure;
4153         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4154             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4155                         pinfo->frame_qlen))
4156                 goto nla_put_failure;
4157         if (((pinfo->filled & MPATH_INFO_SN) &&
4158              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4159             ((pinfo->filled & MPATH_INFO_METRIC) &&
4160              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4161                          pinfo->metric)) ||
4162             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4163              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4164                          pinfo->exptime)) ||
4165             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4166              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4167                         pinfo->flags)) ||
4168             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4169              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4170                          pinfo->discovery_timeout)) ||
4171             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4172              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4173                         pinfo->discovery_retries)))
4174                 goto nla_put_failure;
4175
4176         nla_nest_end(msg, pinfoattr);
4177
4178         return genlmsg_end(msg, hdr);
4179
4180  nla_put_failure:
4181         genlmsg_cancel(msg, hdr);
4182         return -EMSGSIZE;
4183 }
4184
4185 static int nl80211_dump_mpath(struct sk_buff *skb,
4186                               struct netlink_callback *cb)
4187 {
4188         struct mpath_info pinfo;
4189         struct cfg80211_registered_device *dev;
4190         struct wireless_dev *wdev;
4191         u8 dst[ETH_ALEN];
4192         u8 next_hop[ETH_ALEN];
4193         int path_idx = cb->args[2];
4194         int err;
4195
4196         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4197         if (err)
4198                 return err;
4199
4200         if (!dev->ops->dump_mpath) {
4201                 err = -EOPNOTSUPP;
4202                 goto out_err;
4203         }
4204
4205         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4206                 err = -EOPNOTSUPP;
4207                 goto out_err;
4208         }
4209
4210         while (1) {
4211                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4212                                       next_hop, &pinfo);
4213                 if (err == -ENOENT)
4214                         break;
4215                 if (err)
4216                         goto out_err;
4217
4218                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4219                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4220                                        wdev->netdev, dst, next_hop,
4221                                        &pinfo) < 0)
4222                         goto out;
4223
4224                 path_idx++;
4225         }
4226
4227
4228  out:
4229         cb->args[2] = path_idx;
4230         err = skb->len;
4231  out_err:
4232         nl80211_finish_wdev_dump(dev);
4233         return err;
4234 }
4235
4236 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4237 {
4238         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4239         int err;
4240         struct net_device *dev = info->user_ptr[1];
4241         struct mpath_info pinfo;
4242         struct sk_buff *msg;
4243         u8 *dst = NULL;
4244         u8 next_hop[ETH_ALEN];
4245
4246         memset(&pinfo, 0, sizeof(pinfo));
4247
4248         if (!info->attrs[NL80211_ATTR_MAC])
4249                 return -EINVAL;
4250
4251         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4252
4253         if (!rdev->ops->get_mpath)
4254                 return -EOPNOTSUPP;
4255
4256         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4257                 return -EOPNOTSUPP;
4258
4259         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4260         if (err)
4261                 return err;
4262
4263         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4264         if (!msg)
4265                 return -ENOMEM;
4266
4267         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4268                                  dev, dst, next_hop, &pinfo) < 0) {
4269                 nlmsg_free(msg);
4270                 return -ENOBUFS;
4271         }
4272
4273         return genlmsg_reply(msg, info);
4274 }
4275
4276 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4277 {
4278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4279         struct net_device *dev = info->user_ptr[1];
4280         u8 *dst = NULL;
4281         u8 *next_hop = NULL;
4282
4283         if (!info->attrs[NL80211_ATTR_MAC])
4284                 return -EINVAL;
4285
4286         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4287                 return -EINVAL;
4288
4289         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4290         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4291
4292         if (!rdev->ops->change_mpath)
4293                 return -EOPNOTSUPP;
4294
4295         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4296                 return -EOPNOTSUPP;
4297
4298         return rdev_change_mpath(rdev, dev, dst, next_hop);
4299 }
4300
4301 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4302 {
4303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4304         struct net_device *dev = info->user_ptr[1];
4305         u8 *dst = NULL;
4306         u8 *next_hop = NULL;
4307
4308         if (!info->attrs[NL80211_ATTR_MAC])
4309                 return -EINVAL;
4310
4311         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4312                 return -EINVAL;
4313
4314         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4315         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4316
4317         if (!rdev->ops->add_mpath)
4318                 return -EOPNOTSUPP;
4319
4320         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4321                 return -EOPNOTSUPP;
4322
4323         return rdev_add_mpath(rdev, dev, dst, next_hop);
4324 }
4325
4326 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4327 {
4328         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4329         struct net_device *dev = info->user_ptr[1];
4330         u8 *dst = NULL;
4331
4332         if (info->attrs[NL80211_ATTR_MAC])
4333                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4334
4335         if (!rdev->ops->del_mpath)
4336                 return -EOPNOTSUPP;
4337
4338         return rdev_del_mpath(rdev, dev, dst);
4339 }
4340
4341 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4342 {
4343         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4344         struct net_device *dev = info->user_ptr[1];
4345         struct bss_parameters params;
4346
4347         memset(&params, 0, sizeof(params));
4348         /* default to not changing parameters */
4349         params.use_cts_prot = -1;
4350         params.use_short_preamble = -1;
4351         params.use_short_slot_time = -1;
4352         params.ap_isolate = -1;
4353         params.ht_opmode = -1;
4354         params.p2p_ctwindow = -1;
4355         params.p2p_opp_ps = -1;
4356
4357         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4358                 params.use_cts_prot =
4359                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4360         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4361                 params.use_short_preamble =
4362                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4363         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4364                 params.use_short_slot_time =
4365                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4366         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4367                 params.basic_rates =
4368                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4369                 params.basic_rates_len =
4370                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4371         }
4372         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4373                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4374         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4375                 params.ht_opmode =
4376                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4377
4378         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4379                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4380                         return -EINVAL;
4381                 params.p2p_ctwindow =
4382                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4383                 if (params.p2p_ctwindow < 0)
4384                         return -EINVAL;
4385                 if (params.p2p_ctwindow != 0 &&
4386                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4387                         return -EINVAL;
4388         }
4389
4390         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4391                 u8 tmp;
4392
4393                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4394                         return -EINVAL;
4395                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4396                 if (tmp > 1)
4397                         return -EINVAL;
4398                 params.p2p_opp_ps = tmp;
4399                 if (params.p2p_opp_ps &&
4400                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4401                         return -EINVAL;
4402         }
4403
4404         if (!rdev->ops->change_bss)
4405                 return -EOPNOTSUPP;
4406
4407         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4408             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4409                 return -EOPNOTSUPP;
4410
4411         return rdev_change_bss(rdev, dev, &params);
4412 }
4413
4414 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4415         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4416         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4417         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4418         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4419         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4420         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4421 };
4422
4423 static int parse_reg_rule(struct nlattr *tb[],
4424         struct ieee80211_reg_rule *reg_rule)
4425 {
4426         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4427         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4428
4429         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4430                 return -EINVAL;
4431         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4432                 return -EINVAL;
4433         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4434                 return -EINVAL;
4435         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4436                 return -EINVAL;
4437         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4438                 return -EINVAL;
4439
4440         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4441
4442         freq_range->start_freq_khz =
4443                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4444         freq_range->end_freq_khz =
4445                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4446         freq_range->max_bandwidth_khz =
4447                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4448
4449         power_rule->max_eirp =
4450                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4451
4452         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4453                 power_rule->max_antenna_gain =
4454                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4455
4456         return 0;
4457 }
4458
4459 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4460 {
4461         int r;
4462         char *data = NULL;
4463         enum nl80211_user_reg_hint_type user_reg_hint_type;
4464
4465         /*
4466          * You should only get this when cfg80211 hasn't yet initialized
4467          * completely when built-in to the kernel right between the time
4468          * window between nl80211_init() and regulatory_init(), if that is
4469          * even possible.
4470          */
4471         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4472                 return -EINPROGRESS;
4473
4474         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4475                 return -EINVAL;
4476
4477         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4478
4479         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4480                 user_reg_hint_type =
4481                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4482         else
4483                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4484
4485         switch (user_reg_hint_type) {
4486         case NL80211_USER_REG_HINT_USER:
4487         case NL80211_USER_REG_HINT_CELL_BASE:
4488                 break;
4489         default:
4490                 return -EINVAL;
4491         }
4492
4493         r = regulatory_hint_user(data, user_reg_hint_type);
4494
4495         return r;
4496 }
4497
4498 static int nl80211_get_mesh_config(struct sk_buff *skb,
4499                                    struct genl_info *info)
4500 {
4501         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4502         struct net_device *dev = info->user_ptr[1];
4503         struct wireless_dev *wdev = dev->ieee80211_ptr;
4504         struct mesh_config cur_params;
4505         int err = 0;
4506         void *hdr;
4507         struct nlattr *pinfoattr;
4508         struct sk_buff *msg;
4509
4510         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4511                 return -EOPNOTSUPP;
4512
4513         if (!rdev->ops->get_mesh_config)
4514                 return -EOPNOTSUPP;
4515
4516         wdev_lock(wdev);
4517         /* If not connected, get default parameters */
4518         if (!wdev->mesh_id_len)
4519                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4520         else
4521                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4522         wdev_unlock(wdev);
4523
4524         if (err)
4525                 return err;
4526
4527         /* Draw up a netlink message to send back */
4528         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4529         if (!msg)
4530                 return -ENOMEM;
4531         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4532                              NL80211_CMD_GET_MESH_CONFIG);
4533         if (!hdr)
4534                 goto out;
4535         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4536         if (!pinfoattr)
4537                 goto nla_put_failure;
4538         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4539             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4540                         cur_params.dot11MeshRetryTimeout) ||
4541             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4542                         cur_params.dot11MeshConfirmTimeout) ||
4543             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4544                         cur_params.dot11MeshHoldingTimeout) ||
4545             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4546                         cur_params.dot11MeshMaxPeerLinks) ||
4547             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4548                        cur_params.dot11MeshMaxRetries) ||
4549             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4550                        cur_params.dot11MeshTTL) ||
4551             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4552                        cur_params.element_ttl) ||
4553             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4554                        cur_params.auto_open_plinks) ||
4555             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4556                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4557             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4558                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4559             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4560                         cur_params.path_refresh_time) ||
4561             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4562                         cur_params.min_discovery_timeout) ||
4563             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4564                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4565             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4566                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4567             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4568                         cur_params.dot11MeshHWMPperrMinInterval) ||
4569             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4570                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4571             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4572                        cur_params.dot11MeshHWMPRootMode) ||
4573             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4574                         cur_params.dot11MeshHWMPRannInterval) ||
4575             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4576                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4577             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4578                        cur_params.dot11MeshForwarding) ||
4579             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4580                         cur_params.rssi_threshold) ||
4581             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4582                         cur_params.ht_opmode) ||
4583             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4584                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4585             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4586                         cur_params.dot11MeshHWMProotInterval) ||
4587             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4588                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4589             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4590                         cur_params.power_mode) ||
4591             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4592                         cur_params.dot11MeshAwakeWindowDuration))
4593                 goto nla_put_failure;
4594         nla_nest_end(msg, pinfoattr);
4595         genlmsg_end(msg, hdr);
4596         return genlmsg_reply(msg, info);
4597
4598  nla_put_failure:
4599         genlmsg_cancel(msg, hdr);
4600  out:
4601         nlmsg_free(msg);
4602         return -ENOBUFS;
4603 }
4604
4605 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4606         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4607         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4608         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4609         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4610         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4611         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4612         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4613         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4614         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4615         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4616         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4617         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4618         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4619         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4620         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4621         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4622         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4623         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4624         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4625         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4626         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4627         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4628         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4629         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4630         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4631         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4632         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4633 };
4634
4635 static const struct nla_policy
4636         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4637         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4638         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4639         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4640         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4641         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4642         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4643         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4644                                     .len = IEEE80211_MAX_DATA_LEN },
4645         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4646 };
4647
4648 static int nl80211_parse_mesh_config(struct genl_info *info,
4649                                      struct mesh_config *cfg,
4650                                      u32 *mask_out)
4651 {
4652         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4653         u32 mask = 0;
4654
4655 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4656 do {                                                                        \
4657         if (tb[attr]) {                                                     \
4658                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4659                         return -EINVAL;                                     \
4660                 cfg->param = fn(tb[attr]);                                  \
4661                 mask |= (1 << (attr - 1));                                  \
4662         }                                                                   \
4663 } while (0)
4664
4665
4666         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4667                 return -EINVAL;
4668         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4669                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4670                              nl80211_meshconf_params_policy))
4671                 return -EINVAL;
4672
4673         /* This makes sure that there aren't more than 32 mesh config
4674          * parameters (otherwise our bitfield scheme would not work.) */
4675         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4676
4677         /* Fill in the params struct */
4678         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4679                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4680                                   nla_get_u16);
4681         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4682                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4683                                   nla_get_u16);
4684         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4685                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4686                                   nla_get_u16);
4687         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4688                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4689                                   nla_get_u16);
4690         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4691                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4692                                   nla_get_u8);
4693         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4694                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4695         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4696                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4697                                   nla_get_u8);
4698         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4699                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4700                                   nla_get_u8);
4701         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4702                                   1, 255, mask,
4703                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4704                                   nla_get_u32);
4705         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4706                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4707                                   nla_get_u8);
4708         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4709                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4710                                   nla_get_u32);
4711         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4712                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4713                                   nla_get_u16);
4714         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4715                                   1, 65535, mask,
4716                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4717                                   nla_get_u32);
4718         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4719                                   1, 65535, mask,
4720                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4721                                   nla_get_u16);
4722         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4723                                   1, 65535, mask,
4724                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4725                                   nla_get_u16);
4726         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4727                                   dot11MeshHWMPnetDiameterTraversalTime,
4728                                   1, 65535, mask,
4729                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4730                                   nla_get_u16);
4731         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4732                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4733                                   nla_get_u8);
4734         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4735                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4736                                   nla_get_u16);
4737         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4738                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4739                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4740                                   nla_get_u8);
4741         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4742                                   mask, NL80211_MESHCONF_FORWARDING,
4743                                   nla_get_u8);
4744         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, 1, 255,
4745                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4746                                   nla_get_u32);
4747         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4748                                   mask, NL80211_MESHCONF_HT_OPMODE,
4749                                   nla_get_u16);
4750         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4751                                   1, 65535, mask,
4752                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4753                                   nla_get_u32);
4754         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4755                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4756                                   nla_get_u16);
4757         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4758                                   dot11MeshHWMPconfirmationInterval,
4759                                   1, 65535, mask,
4760                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4761                                   nla_get_u16);
4762         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4763                                   NL80211_MESH_POWER_ACTIVE,
4764                                   NL80211_MESH_POWER_MAX,
4765                                   mask, NL80211_MESHCONF_POWER_MODE,
4766                                   nla_get_u32);
4767         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4768                                   0, 65535, mask,
4769                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4770         if (mask_out)
4771                 *mask_out = mask;
4772
4773         return 0;
4774
4775 #undef FILL_IN_MESH_PARAM_IF_SET
4776 }
4777
4778 static int nl80211_parse_mesh_setup(struct genl_info *info,
4779                                      struct mesh_setup *setup)
4780 {
4781         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4782         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4783
4784         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4785                 return -EINVAL;
4786         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4787                              info->attrs[NL80211_ATTR_MESH_SETUP],
4788                              nl80211_mesh_setup_params_policy))
4789                 return -EINVAL;
4790
4791         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4792                 setup->sync_method =
4793                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4794                  IEEE80211_SYNC_METHOD_VENDOR :
4795                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4796
4797         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4798                 setup->path_sel_proto =
4799                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4800                  IEEE80211_PATH_PROTOCOL_VENDOR :
4801                  IEEE80211_PATH_PROTOCOL_HWMP;
4802
4803         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4804                 setup->path_metric =
4805                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4806                  IEEE80211_PATH_METRIC_VENDOR :
4807                  IEEE80211_PATH_METRIC_AIRTIME;
4808
4809
4810         if (tb[NL80211_MESH_SETUP_IE]) {
4811                 struct nlattr *ieattr =
4812                         tb[NL80211_MESH_SETUP_IE];
4813                 if (!is_valid_ie_attr(ieattr))
4814                         return -EINVAL;
4815                 setup->ie = nla_data(ieattr);
4816                 setup->ie_len = nla_len(ieattr);
4817         }
4818         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4819             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4820                 return -EINVAL;
4821         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4822         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4823         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4824         if (setup->is_secure)
4825                 setup->user_mpm = true;
4826
4827         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4828                 if (!setup->user_mpm)
4829                         return -EINVAL;
4830                 setup->auth_id =
4831                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4832         }
4833
4834         return 0;
4835 }
4836
4837 static int nl80211_update_mesh_config(struct sk_buff *skb,
4838                                       struct genl_info *info)
4839 {
4840         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4841         struct net_device *dev = info->user_ptr[1];
4842         struct wireless_dev *wdev = dev->ieee80211_ptr;
4843         struct mesh_config cfg;
4844         u32 mask;
4845         int err;
4846
4847         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4848                 return -EOPNOTSUPP;
4849
4850         if (!rdev->ops->update_mesh_config)
4851                 return -EOPNOTSUPP;
4852
4853         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4854         if (err)
4855                 return err;
4856
4857         wdev_lock(wdev);
4858         if (!wdev->mesh_id_len)
4859                 err = -ENOLINK;
4860
4861         if (!err)
4862                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4863
4864         wdev_unlock(wdev);
4865
4866         return err;
4867 }
4868
4869 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4870 {
4871         const struct ieee80211_regdomain *regdom;
4872         struct sk_buff *msg;
4873         void *hdr = NULL;
4874         struct nlattr *nl_reg_rules;
4875         unsigned int i;
4876
4877         if (!cfg80211_regdomain)
4878                 return -EINVAL;
4879
4880         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4881         if (!msg)
4882                 return -ENOBUFS;
4883
4884         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4885                              NL80211_CMD_GET_REG);
4886         if (!hdr)
4887                 goto put_failure;
4888
4889         if (reg_last_request_cell_base() &&
4890             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4891                         NL80211_USER_REG_HINT_CELL_BASE))
4892                 goto nla_put_failure;
4893
4894         rcu_read_lock();
4895         regdom = rcu_dereference(cfg80211_regdomain);
4896
4897         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4898             (regdom->dfs_region &&
4899              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4900                 goto nla_put_failure_rcu;
4901
4902         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4903         if (!nl_reg_rules)
4904                 goto nla_put_failure_rcu;
4905
4906         for (i = 0; i < regdom->n_reg_rules; i++) {
4907                 struct nlattr *nl_reg_rule;
4908                 const struct ieee80211_reg_rule *reg_rule;
4909                 const struct ieee80211_freq_range *freq_range;
4910                 const struct ieee80211_power_rule *power_rule;
4911
4912                 reg_rule = &regdom->reg_rules[i];
4913                 freq_range = &reg_rule->freq_range;
4914                 power_rule = &reg_rule->power_rule;
4915
4916                 nl_reg_rule = nla_nest_start(msg, i);
4917                 if (!nl_reg_rule)
4918                         goto nla_put_failure_rcu;
4919
4920                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4921                                 reg_rule->flags) ||
4922                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4923                                 freq_range->start_freq_khz) ||
4924                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4925                                 freq_range->end_freq_khz) ||
4926                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4927                                 freq_range->max_bandwidth_khz) ||
4928                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4929                                 power_rule->max_antenna_gain) ||
4930                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4931                                 power_rule->max_eirp))
4932                         goto nla_put_failure_rcu;
4933
4934                 nla_nest_end(msg, nl_reg_rule);
4935         }
4936         rcu_read_unlock();
4937
4938         nla_nest_end(msg, nl_reg_rules);
4939
4940         genlmsg_end(msg, hdr);
4941         return genlmsg_reply(msg, info);
4942
4943 nla_put_failure_rcu:
4944         rcu_read_unlock();
4945 nla_put_failure:
4946         genlmsg_cancel(msg, hdr);
4947 put_failure:
4948         nlmsg_free(msg);
4949         return -EMSGSIZE;
4950 }
4951
4952 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4953 {
4954         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4955         struct nlattr *nl_reg_rule;
4956         char *alpha2 = NULL;
4957         int rem_reg_rules = 0, r = 0;
4958         u32 num_rules = 0, rule_idx = 0, size_of_regd;
4959         u8 dfs_region = 0;
4960         struct ieee80211_regdomain *rd = NULL;
4961
4962         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4963                 return -EINVAL;
4964
4965         if (!info->attrs[NL80211_ATTR_REG_RULES])
4966                 return -EINVAL;
4967
4968         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4969
4970         if (info->attrs[NL80211_ATTR_DFS_REGION])
4971                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4972
4973         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4974                             rem_reg_rules) {
4975                 num_rules++;
4976                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4977                         return -EINVAL;
4978         }
4979
4980         size_of_regd = sizeof(struct ieee80211_regdomain) +
4981                        num_rules * sizeof(struct ieee80211_reg_rule);
4982
4983         rd = kzalloc(size_of_regd, GFP_KERNEL);
4984         if (!rd)
4985                 return -ENOMEM;
4986
4987         rd->n_reg_rules = num_rules;
4988         rd->alpha2[0] = alpha2[0];
4989         rd->alpha2[1] = alpha2[1];
4990
4991         /*
4992          * Disable DFS master mode if the DFS region was
4993          * not supported or known on this kernel.
4994          */
4995         if (reg_supported_dfs_region(dfs_region))
4996                 rd->dfs_region = dfs_region;
4997
4998         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4999                             rem_reg_rules) {
5000                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5001                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5002                           reg_rule_policy);
5003                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5004                 if (r)
5005                         goto bad_reg;
5006
5007                 rule_idx++;
5008
5009                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5010                         r = -EINVAL;
5011                         goto bad_reg;
5012                 }
5013         }
5014
5015         r = set_regdom(rd);
5016         /* set_regdom took ownership */
5017         rd = NULL;
5018
5019  bad_reg:
5020         kfree(rd);
5021         return r;
5022 }
5023
5024 static int validate_scan_freqs(struct nlattr *freqs)
5025 {
5026         struct nlattr *attr1, *attr2;
5027         int n_channels = 0, tmp1, tmp2;
5028
5029         nla_for_each_nested(attr1, freqs, tmp1) {
5030                 n_channels++;
5031                 /*
5032                  * Some hardware has a limited channel list for
5033                  * scanning, and it is pretty much nonsensical
5034                  * to scan for a channel twice, so disallow that
5035                  * and don't require drivers to check that the
5036                  * channel list they get isn't longer than what
5037                  * they can scan, as long as they can scan all
5038                  * the channels they registered at once.
5039                  */
5040                 nla_for_each_nested(attr2, freqs, tmp2)
5041                         if (attr1 != attr2 &&
5042                             nla_get_u32(attr1) == nla_get_u32(attr2))
5043                                 return 0;
5044         }
5045
5046         return n_channels;
5047 }
5048
5049 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5050 {
5051         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5052         struct wireless_dev *wdev = info->user_ptr[1];
5053         struct cfg80211_scan_request *request;
5054         struct nlattr *attr;
5055         struct wiphy *wiphy;
5056         int err, tmp, n_ssids = 0, n_channels, i;
5057         size_t ie_len;
5058
5059         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5060                 return -EINVAL;
5061
5062         wiphy = &rdev->wiphy;
5063
5064         if (!rdev->ops->scan)
5065                 return -EOPNOTSUPP;
5066
5067         if (rdev->scan_req) {
5068                 err = -EBUSY;
5069                 goto unlock;
5070         }
5071
5072         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5073                 n_channels = validate_scan_freqs(
5074                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5075                 if (!n_channels) {
5076                         err = -EINVAL;
5077                         goto unlock;
5078                 }
5079         } else {
5080                 enum ieee80211_band band;
5081                 n_channels = 0;
5082
5083                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5084                         if (wiphy->bands[band])
5085                                 n_channels += wiphy->bands[band]->n_channels;
5086         }
5087
5088         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5089                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5090                         n_ssids++;
5091
5092         if (n_ssids > wiphy->max_scan_ssids) {
5093                 err = -EINVAL;
5094                 goto unlock;
5095         }
5096
5097         if (info->attrs[NL80211_ATTR_IE])
5098                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5099         else
5100                 ie_len = 0;
5101
5102         if (ie_len > wiphy->max_scan_ie_len) {
5103                 err = -EINVAL;
5104                 goto unlock;
5105         }
5106
5107         request = kzalloc(sizeof(*request)
5108                         + sizeof(*request->ssids) * n_ssids
5109                         + sizeof(*request->channels) * n_channels
5110                         + ie_len, GFP_KERNEL);
5111         if (!request) {
5112                 err = -ENOMEM;
5113                 goto unlock;
5114         }
5115
5116         if (n_ssids)
5117                 request->ssids = (void *)&request->channels[n_channels];
5118         request->n_ssids = n_ssids;
5119         if (ie_len) {
5120                 if (request->ssids)
5121                         request->ie = (void *)(request->ssids + n_ssids);
5122                 else
5123                         request->ie = (void *)(request->channels + n_channels);
5124         }
5125
5126         i = 0;
5127         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5128                 /* user specified, bail out if channel not found */
5129                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5130                         struct ieee80211_channel *chan;
5131
5132                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5133
5134                         if (!chan) {
5135                                 err = -EINVAL;
5136                                 goto out_free;
5137                         }
5138
5139                         /* ignore disabled channels */
5140                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5141                                 continue;
5142
5143                         request->channels[i] = chan;
5144                         i++;
5145                 }
5146         } else {
5147                 enum ieee80211_band band;
5148
5149                 /* all channels */
5150                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5151                         int j;
5152                         if (!wiphy->bands[band])
5153                                 continue;
5154                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5155                                 struct ieee80211_channel *chan;
5156
5157                                 chan = &wiphy->bands[band]->channels[j];
5158
5159                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5160                                         continue;
5161
5162                                 request->channels[i] = chan;
5163                                 i++;
5164                         }
5165                 }
5166         }
5167
5168         if (!i) {
5169                 err = -EINVAL;
5170                 goto out_free;
5171         }
5172
5173         request->n_channels = i;
5174
5175         i = 0;
5176         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5177                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5178                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5179                                 err = -EINVAL;
5180                                 goto out_free;
5181                         }
5182                         request->ssids[i].ssid_len = nla_len(attr);
5183                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5184                         i++;
5185                 }
5186         }
5187
5188         if (info->attrs[NL80211_ATTR_IE]) {
5189                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5190                 memcpy((void *)request->ie,
5191                        nla_data(info->attrs[NL80211_ATTR_IE]),
5192                        request->ie_len);
5193         }
5194
5195         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5196                 if (wiphy->bands[i])
5197                         request->rates[i] =
5198                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5199
5200         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5201                 nla_for_each_nested(attr,
5202                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5203                                     tmp) {
5204                         enum ieee80211_band band = nla_type(attr);
5205
5206                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5207                                 err = -EINVAL;
5208                                 goto out_free;
5209                         }
5210                         err = ieee80211_get_ratemask(wiphy->bands[band],
5211                                                      nla_data(attr),
5212                                                      nla_len(attr),
5213                                                      &request->rates[band]);
5214                         if (err)
5215                                 goto out_free;
5216                 }
5217         }
5218
5219         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5220                 request->flags = nla_get_u32(
5221                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5222                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5223                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5224                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5225                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5226                         err = -EOPNOTSUPP;
5227                         goto out_free;
5228                 }
5229         }
5230
5231         request->no_cck =
5232                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5233
5234         request->wdev = wdev;
5235         request->wiphy = &rdev->wiphy;
5236         request->scan_start = jiffies;
5237
5238         rdev->scan_req = request;
5239         err = rdev_scan(rdev, request);
5240
5241         if (!err) {
5242                 nl80211_send_scan_start(rdev, wdev);
5243                 if (wdev->netdev)
5244                         dev_hold(wdev->netdev);
5245         } else {
5246  out_free:
5247                 rdev->scan_req = NULL;
5248                 kfree(request);
5249         }
5250
5251  unlock:
5252         return err;
5253 }
5254
5255 static int nl80211_start_sched_scan(struct sk_buff *skb,
5256                                     struct genl_info *info)
5257 {
5258         struct cfg80211_sched_scan_request *request;
5259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5260         struct net_device *dev = info->user_ptr[1];
5261         struct nlattr *attr;
5262         struct wiphy *wiphy;
5263         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5264         u32 interval;
5265         enum ieee80211_band band;
5266         size_t ie_len;
5267         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5268
5269         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5270             !rdev->ops->sched_scan_start)
5271                 return -EOPNOTSUPP;
5272
5273         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5274                 return -EINVAL;
5275
5276         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5277                 return -EINVAL;
5278
5279         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5280         if (interval == 0)
5281                 return -EINVAL;
5282
5283         wiphy = &rdev->wiphy;
5284
5285         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5286                 n_channels = validate_scan_freqs(
5287                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5288                 if (!n_channels)
5289                         return -EINVAL;
5290         } else {
5291                 n_channels = 0;
5292
5293                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5294                         if (wiphy->bands[band])
5295                                 n_channels += wiphy->bands[band]->n_channels;
5296         }
5297
5298         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5299                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5300                                     tmp)
5301                         n_ssids++;
5302
5303         if (n_ssids > wiphy->max_sched_scan_ssids)
5304                 return -EINVAL;
5305
5306         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5307                 nla_for_each_nested(attr,
5308                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5309                                     tmp)
5310                         n_match_sets++;
5311
5312         if (n_match_sets > wiphy->max_match_sets)
5313                 return -EINVAL;
5314
5315         if (info->attrs[NL80211_ATTR_IE])
5316                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5317         else
5318                 ie_len = 0;
5319
5320         if (ie_len > wiphy->max_sched_scan_ie_len)
5321                 return -EINVAL;
5322
5323         if (rdev->sched_scan_req) {
5324                 err = -EINPROGRESS;
5325                 goto out;
5326         }
5327
5328         request = kzalloc(sizeof(*request)
5329                         + sizeof(*request->ssids) * n_ssids
5330                         + sizeof(*request->match_sets) * n_match_sets
5331                         + sizeof(*request->channels) * n_channels
5332                         + ie_len, GFP_KERNEL);
5333         if (!request) {
5334                 err = -ENOMEM;
5335                 goto out;
5336         }
5337
5338         if (n_ssids)
5339                 request->ssids = (void *)&request->channels[n_channels];
5340         request->n_ssids = n_ssids;
5341         if (ie_len) {
5342                 if (request->ssids)
5343                         request->ie = (void *)(request->ssids + n_ssids);
5344                 else
5345                         request->ie = (void *)(request->channels + n_channels);
5346         }
5347
5348         if (n_match_sets) {
5349                 if (request->ie)
5350                         request->match_sets = (void *)(request->ie + ie_len);
5351                 else if (request->ssids)
5352                         request->match_sets =
5353                                 (void *)(request->ssids + n_ssids);
5354                 else
5355                         request->match_sets =
5356                                 (void *)(request->channels + n_channels);
5357         }
5358         request->n_match_sets = n_match_sets;
5359
5360         i = 0;
5361         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5362                 /* user specified, bail out if channel not found */
5363                 nla_for_each_nested(attr,
5364                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5365                                     tmp) {
5366                         struct ieee80211_channel *chan;
5367
5368                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5369
5370                         if (!chan) {
5371                                 err = -EINVAL;
5372                                 goto out_free;
5373                         }
5374
5375                         /* ignore disabled channels */
5376                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5377                                 continue;
5378
5379                         request->channels[i] = chan;
5380                         i++;
5381                 }
5382         } else {
5383                 /* all channels */
5384                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5385                         int j;
5386                         if (!wiphy->bands[band])
5387                                 continue;
5388                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5389                                 struct ieee80211_channel *chan;
5390
5391                                 chan = &wiphy->bands[band]->channels[j];
5392
5393                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5394                                         continue;
5395
5396                                 request->channels[i] = chan;
5397                                 i++;
5398                         }
5399                 }
5400         }
5401
5402         if (!i) {
5403                 err = -EINVAL;
5404                 goto out_free;
5405         }
5406
5407         request->n_channels = i;
5408
5409         i = 0;
5410         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5411                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5412                                     tmp) {
5413                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5414                                 err = -EINVAL;
5415                                 goto out_free;
5416                         }
5417                         request->ssids[i].ssid_len = nla_len(attr);
5418                         memcpy(request->ssids[i].ssid, nla_data(attr),
5419                                nla_len(attr));
5420                         i++;
5421                 }
5422         }
5423
5424         i = 0;
5425         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5426                 nla_for_each_nested(attr,
5427                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5428                                     tmp) {
5429                         struct nlattr *ssid, *rssi;
5430
5431                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5432                                   nla_data(attr), nla_len(attr),
5433                                   nl80211_match_policy);
5434                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5435                         if (ssid) {
5436                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5437                                         err = -EINVAL;
5438                                         goto out_free;
5439                                 }
5440                                 memcpy(request->match_sets[i].ssid.ssid,
5441                                        nla_data(ssid), nla_len(ssid));
5442                                 request->match_sets[i].ssid.ssid_len =
5443                                         nla_len(ssid);
5444                         }
5445                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5446                         if (rssi)
5447                                 request->rssi_thold = nla_get_u32(rssi);
5448                         else
5449                                 request->rssi_thold =
5450                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5451                         i++;
5452                 }
5453         }
5454
5455         if (info->attrs[NL80211_ATTR_IE]) {
5456                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5457                 memcpy((void *)request->ie,
5458                        nla_data(info->attrs[NL80211_ATTR_IE]),
5459                        request->ie_len);
5460         }
5461
5462         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5463                 request->flags = nla_get_u32(
5464                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5465                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5466                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5467                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5468                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5469                         err = -EOPNOTSUPP;
5470                         goto out_free;
5471                 }
5472         }
5473
5474         request->dev = dev;
5475         request->wiphy = &rdev->wiphy;
5476         request->interval = interval;
5477         request->scan_start = jiffies;
5478
5479         err = rdev_sched_scan_start(rdev, dev, request);
5480         if (!err) {
5481                 rdev->sched_scan_req = request;
5482                 nl80211_send_sched_scan(rdev, dev,
5483                                         NL80211_CMD_START_SCHED_SCAN);
5484                 goto out;
5485         }
5486
5487 out_free:
5488         kfree(request);
5489 out:
5490         return err;
5491 }
5492
5493 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5494                                    struct genl_info *info)
5495 {
5496         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5497
5498         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5499             !rdev->ops->sched_scan_stop)
5500                 return -EOPNOTSUPP;
5501
5502         return __cfg80211_stop_sched_scan(rdev, false);
5503 }
5504
5505 static int nl80211_start_radar_detection(struct sk_buff *skb,
5506                                          struct genl_info *info)
5507 {
5508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5509         struct net_device *dev = info->user_ptr[1];
5510         struct wireless_dev *wdev = dev->ieee80211_ptr;
5511         struct cfg80211_chan_def chandef;
5512         int err;
5513
5514         err = nl80211_parse_chandef(rdev, info, &chandef);
5515         if (err)
5516                 return err;
5517
5518         if (wdev->cac_started)
5519                 return -EBUSY;
5520
5521         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5522         if (err < 0)
5523                 return err;
5524
5525         if (err == 0)
5526                 return -EINVAL;
5527
5528         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5529                 return -EINVAL;
5530
5531         if (!rdev->ops->start_radar_detection)
5532                 return -EOPNOTSUPP;
5533
5534         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5535                                            chandef.chan, CHAN_MODE_SHARED,
5536                                            BIT(chandef.width));
5537         if (err)
5538                 return err;
5539
5540         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5541         if (!err) {
5542                 wdev->channel = chandef.chan;
5543                 wdev->cac_started = true;
5544                 wdev->cac_start_time = jiffies;
5545         }
5546         return err;
5547 }
5548
5549 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5550                             u32 seq, int flags,
5551                             struct cfg80211_registered_device *rdev,
5552                             struct wireless_dev *wdev,
5553                             struct cfg80211_internal_bss *intbss)
5554 {
5555         struct cfg80211_bss *res = &intbss->pub;
5556         const struct cfg80211_bss_ies *ies;
5557         void *hdr;
5558         struct nlattr *bss;
5559         bool tsf = false;
5560
5561         ASSERT_WDEV_LOCK(wdev);
5562
5563         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5564                              NL80211_CMD_NEW_SCAN_RESULTS);
5565         if (!hdr)
5566                 return -1;
5567
5568         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5569
5570         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5571                 goto nla_put_failure;
5572         if (wdev->netdev &&
5573             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5574                 goto nla_put_failure;
5575         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5576                 goto nla_put_failure;
5577
5578         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5579         if (!bss)
5580                 goto nla_put_failure;
5581         if ((!is_zero_ether_addr(res->bssid) &&
5582              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5583                 goto nla_put_failure;
5584
5585         rcu_read_lock();
5586         ies = rcu_dereference(res->ies);
5587         if (ies) {
5588                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5589                         goto fail_unlock_rcu;
5590                 tsf = true;
5591                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5592                                         ies->len, ies->data))
5593                         goto fail_unlock_rcu;
5594         }
5595         ies = rcu_dereference(res->beacon_ies);
5596         if (ies) {
5597                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5598                         goto fail_unlock_rcu;
5599                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5600                                         ies->len, ies->data))
5601                         goto fail_unlock_rcu;
5602         }
5603         rcu_read_unlock();
5604
5605         if (res->beacon_interval &&
5606             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5607                 goto nla_put_failure;
5608         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5609             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5610             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5611                         jiffies_to_msecs(jiffies - intbss->ts)))
5612                 goto nla_put_failure;
5613
5614         switch (rdev->wiphy.signal_type) {
5615         case CFG80211_SIGNAL_TYPE_MBM:
5616                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5617                         goto nla_put_failure;
5618                 break;
5619         case CFG80211_SIGNAL_TYPE_UNSPEC:
5620                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5621                         goto nla_put_failure;
5622                 break;
5623         default:
5624                 break;
5625         }
5626
5627         switch (wdev->iftype) {
5628         case NL80211_IFTYPE_P2P_CLIENT:
5629         case NL80211_IFTYPE_STATION:
5630                 if (intbss == wdev->current_bss &&
5631                     nla_put_u32(msg, NL80211_BSS_STATUS,
5632                                 NL80211_BSS_STATUS_ASSOCIATED))
5633                         goto nla_put_failure;
5634                 break;
5635         case NL80211_IFTYPE_ADHOC:
5636                 if (intbss == wdev->current_bss &&
5637                     nla_put_u32(msg, NL80211_BSS_STATUS,
5638                                 NL80211_BSS_STATUS_IBSS_JOINED))
5639                         goto nla_put_failure;
5640                 break;
5641         default:
5642                 break;
5643         }
5644
5645         nla_nest_end(msg, bss);
5646
5647         return genlmsg_end(msg, hdr);
5648
5649  fail_unlock_rcu:
5650         rcu_read_unlock();
5651  nla_put_failure:
5652         genlmsg_cancel(msg, hdr);
5653         return -EMSGSIZE;
5654 }
5655
5656 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5657 {
5658         struct cfg80211_registered_device *rdev;
5659         struct cfg80211_internal_bss *scan;
5660         struct wireless_dev *wdev;
5661         int start = cb->args[2], idx = 0;
5662         int err;
5663
5664         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5665         if (err)
5666                 return err;
5667
5668         wdev_lock(wdev);
5669         spin_lock_bh(&rdev->bss_lock);
5670         cfg80211_bss_expire(rdev);
5671
5672         cb->seq = rdev->bss_generation;
5673
5674         list_for_each_entry(scan, &rdev->bss_list, list) {
5675                 if (++idx <= start)
5676                         continue;
5677                 if (nl80211_send_bss(skb, cb,
5678                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5679                                 rdev, wdev, scan) < 0) {
5680                         idx--;
5681                         break;
5682                 }
5683         }
5684
5685         spin_unlock_bh(&rdev->bss_lock);
5686         wdev_unlock(wdev);
5687
5688         cb->args[2] = idx;
5689         nl80211_finish_wdev_dump(rdev);
5690
5691         return skb->len;
5692 }
5693
5694 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5695                                 int flags, struct net_device *dev,
5696                                 struct survey_info *survey)
5697 {
5698         void *hdr;
5699         struct nlattr *infoattr;
5700
5701         hdr = nl80211hdr_put(msg, portid, seq, flags,
5702                              NL80211_CMD_NEW_SURVEY_RESULTS);
5703         if (!hdr)
5704                 return -ENOMEM;
5705
5706         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5707                 goto nla_put_failure;
5708
5709         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5710         if (!infoattr)
5711                 goto nla_put_failure;
5712
5713         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5714                         survey->channel->center_freq))
5715                 goto nla_put_failure;
5716
5717         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5718             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5719                 goto nla_put_failure;
5720         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5721             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5722                 goto nla_put_failure;
5723         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5724             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5725                         survey->channel_time))
5726                 goto nla_put_failure;
5727         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5728             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5729                         survey->channel_time_busy))
5730                 goto nla_put_failure;
5731         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5732             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5733                         survey->channel_time_ext_busy))
5734                 goto nla_put_failure;
5735         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5736             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5737                         survey->channel_time_rx))
5738                 goto nla_put_failure;
5739         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5740             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5741                         survey->channel_time_tx))
5742                 goto nla_put_failure;
5743
5744         nla_nest_end(msg, infoattr);
5745
5746         return genlmsg_end(msg, hdr);
5747
5748  nla_put_failure:
5749         genlmsg_cancel(msg, hdr);
5750         return -EMSGSIZE;
5751 }
5752
5753 static int nl80211_dump_survey(struct sk_buff *skb,
5754                         struct netlink_callback *cb)
5755 {
5756         struct survey_info survey;
5757         struct cfg80211_registered_device *dev;
5758         struct wireless_dev *wdev;
5759         int survey_idx = cb->args[2];
5760         int res;
5761
5762         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5763         if (res)
5764                 return res;
5765
5766         if (!wdev->netdev) {
5767                 res = -EINVAL;
5768                 goto out_err;
5769         }
5770
5771         if (!dev->ops->dump_survey) {
5772                 res = -EOPNOTSUPP;
5773                 goto out_err;
5774         }
5775
5776         while (1) {
5777                 struct ieee80211_channel *chan;
5778
5779                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5780                 if (res == -ENOENT)
5781                         break;
5782                 if (res)
5783                         goto out_err;
5784
5785                 /* Survey without a channel doesn't make sense */
5786                 if (!survey.channel) {
5787                         res = -EINVAL;
5788                         goto out;
5789                 }
5790
5791                 chan = ieee80211_get_channel(&dev->wiphy,
5792                                              survey.channel->center_freq);
5793                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5794                         survey_idx++;
5795                         continue;
5796                 }
5797
5798                 if (nl80211_send_survey(skb,
5799                                 NETLINK_CB(cb->skb).portid,
5800                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5801                                 wdev->netdev, &survey) < 0)
5802                         goto out;
5803                 survey_idx++;
5804         }
5805
5806  out:
5807         cb->args[2] = survey_idx;
5808         res = skb->len;
5809  out_err:
5810         nl80211_finish_wdev_dump(dev);
5811         return res;
5812 }
5813
5814 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5815 {
5816         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5817                                   NL80211_WPA_VERSION_2));
5818 }
5819
5820 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5821 {
5822         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5823         struct net_device *dev = info->user_ptr[1];
5824         struct ieee80211_channel *chan;
5825         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5826         int err, ssid_len, ie_len = 0, sae_data_len = 0;
5827         enum nl80211_auth_type auth_type;
5828         struct key_parse key;
5829         bool local_state_change;
5830
5831         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5832                 return -EINVAL;
5833
5834         if (!info->attrs[NL80211_ATTR_MAC])
5835                 return -EINVAL;
5836
5837         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5838                 return -EINVAL;
5839
5840         if (!info->attrs[NL80211_ATTR_SSID])
5841                 return -EINVAL;
5842
5843         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5844                 return -EINVAL;
5845
5846         err = nl80211_parse_key(info, &key);
5847         if (err)
5848                 return err;
5849
5850         if (key.idx >= 0) {
5851                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5852                         return -EINVAL;
5853                 if (!key.p.key || !key.p.key_len)
5854                         return -EINVAL;
5855                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5856                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5857                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5858                      key.p.key_len != WLAN_KEY_LEN_WEP104))
5859                         return -EINVAL;
5860                 if (key.idx > 4)
5861                         return -EINVAL;
5862         } else {
5863                 key.p.key_len = 0;
5864                 key.p.key = NULL;
5865         }
5866
5867         if (key.idx >= 0) {
5868                 int i;
5869                 bool ok = false;
5870                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5871                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5872                                 ok = true;
5873                                 break;
5874                         }
5875                 }
5876                 if (!ok)
5877                         return -EINVAL;
5878         }
5879
5880         if (!rdev->ops->auth)
5881                 return -EOPNOTSUPP;
5882
5883         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5884             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5885                 return -EOPNOTSUPP;
5886
5887         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5888         chan = ieee80211_get_channel(&rdev->wiphy,
5889                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5890         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5891                 return -EINVAL;
5892
5893         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5894         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5895
5896         if (info->attrs[NL80211_ATTR_IE]) {
5897                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5898                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5899         }
5900
5901         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5902         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5903                 return -EINVAL;
5904
5905         if (auth_type == NL80211_AUTHTYPE_SAE &&
5906             !info->attrs[NL80211_ATTR_SAE_DATA])
5907                 return -EINVAL;
5908
5909         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5910                 if (auth_type != NL80211_AUTHTYPE_SAE)
5911                         return -EINVAL;
5912                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5913                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5914                 /* need to include at least Auth Transaction and Status Code */
5915                 if (sae_data_len < 4)
5916                         return -EINVAL;
5917         }
5918
5919         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5920
5921         /*
5922          * Since we no longer track auth state, ignore
5923          * requests to only change local state.
5924          */
5925         if (local_state_change)
5926                 return 0;
5927
5928         wdev_lock(dev->ieee80211_ptr);
5929         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5930                                  ssid, ssid_len, ie, ie_len,
5931                                  key.p.key, key.p.key_len, key.idx,
5932                                  sae_data, sae_data_len);
5933         wdev_unlock(dev->ieee80211_ptr);
5934         return err;
5935 }
5936
5937 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5938                                    struct genl_info *info,
5939                                    struct cfg80211_crypto_settings *settings,
5940                                    int cipher_limit)
5941 {
5942         memset(settings, 0, sizeof(*settings));
5943
5944         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5945
5946         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5947                 u16 proto;
5948                 proto = nla_get_u16(
5949                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5950                 settings->control_port_ethertype = cpu_to_be16(proto);
5951                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5952                     proto != ETH_P_PAE)
5953                         return -EINVAL;
5954                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5955                         settings->control_port_no_encrypt = true;
5956         } else
5957                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5958
5959         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5960                 void *data;
5961                 int len, i;
5962
5963                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5964                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5965                 settings->n_ciphers_pairwise = len / sizeof(u32);
5966
5967                 if (len % sizeof(u32))
5968                         return -EINVAL;
5969
5970                 if (settings->n_ciphers_pairwise > cipher_limit)
5971                         return -EINVAL;
5972
5973                 memcpy(settings->ciphers_pairwise, data, len);
5974
5975                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5976                         if (!cfg80211_supported_cipher_suite(
5977                                         &rdev->wiphy,
5978                                         settings->ciphers_pairwise[i]))
5979                                 return -EINVAL;
5980         }
5981
5982         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5983                 settings->cipher_group =
5984                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5985                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5986                                                      settings->cipher_group))
5987                         return -EINVAL;
5988         }
5989
5990         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5991                 settings->wpa_versions =
5992                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5993                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5994                         return -EINVAL;
5995         }
5996
5997         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5998                 void *data;
5999                 int len;
6000
6001                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6002                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6003                 settings->n_akm_suites = len / sizeof(u32);
6004
6005                 if (len % sizeof(u32))
6006                         return -EINVAL;
6007
6008                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6009                         return -EINVAL;
6010
6011                 memcpy(settings->akm_suites, data, len);
6012         }
6013
6014         return 0;
6015 }
6016
6017 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6018 {
6019         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6020         struct net_device *dev = info->user_ptr[1];
6021         struct ieee80211_channel *chan;
6022         struct cfg80211_assoc_request req = {};
6023         const u8 *bssid, *ssid;
6024         int err, ssid_len = 0;
6025
6026         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6027                 return -EINVAL;
6028
6029         if (!info->attrs[NL80211_ATTR_MAC] ||
6030             !info->attrs[NL80211_ATTR_SSID] ||
6031             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6032                 return -EINVAL;
6033
6034         if (!rdev->ops->assoc)
6035                 return -EOPNOTSUPP;
6036
6037         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6038             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6039                 return -EOPNOTSUPP;
6040
6041         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6042
6043         chan = ieee80211_get_channel(&rdev->wiphy,
6044                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6045         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6046                 return -EINVAL;
6047
6048         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6049         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6050
6051         if (info->attrs[NL80211_ATTR_IE]) {
6052                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6053                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6054         }
6055
6056         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6057                 enum nl80211_mfp mfp =
6058                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6059                 if (mfp == NL80211_MFP_REQUIRED)
6060                         req.use_mfp = true;
6061                 else if (mfp != NL80211_MFP_NO)
6062                         return -EINVAL;
6063         }
6064
6065         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6066                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6067
6068         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6069                 req.flags |= ASSOC_REQ_DISABLE_HT;
6070
6071         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6072                 memcpy(&req.ht_capa_mask,
6073                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6074                        sizeof(req.ht_capa_mask));
6075
6076         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6077                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6078                         return -EINVAL;
6079                 memcpy(&req.ht_capa,
6080                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6081                        sizeof(req.ht_capa));
6082         }
6083
6084         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6085                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6086
6087         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6088                 memcpy(&req.vht_capa_mask,
6089                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6090                        sizeof(req.vht_capa_mask));
6091
6092         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6093                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6094                         return -EINVAL;
6095                 memcpy(&req.vht_capa,
6096                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6097                        sizeof(req.vht_capa));
6098         }
6099
6100         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6101         if (!err) {
6102                 wdev_lock(dev->ieee80211_ptr);
6103                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6104                                           ssid, ssid_len, &req);
6105                 wdev_unlock(dev->ieee80211_ptr);
6106         }
6107
6108         return err;
6109 }
6110
6111 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6112 {
6113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6114         struct net_device *dev = info->user_ptr[1];
6115         const u8 *ie = NULL, *bssid;
6116         int ie_len = 0, err;
6117         u16 reason_code;
6118         bool local_state_change;
6119
6120         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6121                 return -EINVAL;
6122
6123         if (!info->attrs[NL80211_ATTR_MAC])
6124                 return -EINVAL;
6125
6126         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6127                 return -EINVAL;
6128
6129         if (!rdev->ops->deauth)
6130                 return -EOPNOTSUPP;
6131
6132         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6133             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6134                 return -EOPNOTSUPP;
6135
6136         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6137
6138         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6139         if (reason_code == 0) {
6140                 /* Reason Code 0 is reserved */
6141                 return -EINVAL;
6142         }
6143
6144         if (info->attrs[NL80211_ATTR_IE]) {
6145                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6146                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6147         }
6148
6149         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6150
6151         wdev_lock(dev->ieee80211_ptr);
6152         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6153                                    local_state_change);
6154         wdev_unlock(dev->ieee80211_ptr);
6155         return err;
6156 }
6157
6158 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6159 {
6160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6161         struct net_device *dev = info->user_ptr[1];
6162         const u8 *ie = NULL, *bssid;
6163         int ie_len = 0, err;
6164         u16 reason_code;
6165         bool local_state_change;
6166
6167         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6168                 return -EINVAL;
6169
6170         if (!info->attrs[NL80211_ATTR_MAC])
6171                 return -EINVAL;
6172
6173         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6174                 return -EINVAL;
6175
6176         if (!rdev->ops->disassoc)
6177                 return -EOPNOTSUPP;
6178
6179         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6180             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6181                 return -EOPNOTSUPP;
6182
6183         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6184
6185         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6186         if (reason_code == 0) {
6187                 /* Reason Code 0 is reserved */
6188                 return -EINVAL;
6189         }
6190
6191         if (info->attrs[NL80211_ATTR_IE]) {
6192                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6193                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6194         }
6195
6196         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6197
6198         wdev_lock(dev->ieee80211_ptr);
6199         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6200                                      local_state_change);
6201         wdev_unlock(dev->ieee80211_ptr);
6202         return err;
6203 }
6204
6205 static bool
6206 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6207                          int mcast_rate[IEEE80211_NUM_BANDS],
6208                          int rateval)
6209 {
6210         struct wiphy *wiphy = &rdev->wiphy;
6211         bool found = false;
6212         int band, i;
6213
6214         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6215                 struct ieee80211_supported_band *sband;
6216
6217                 sband = wiphy->bands[band];
6218                 if (!sband)
6219                         continue;
6220
6221                 for (i = 0; i < sband->n_bitrates; i++) {
6222                         if (sband->bitrates[i].bitrate == rateval) {
6223                                 mcast_rate[band] = i + 1;
6224                                 found = true;
6225                                 break;
6226                         }
6227                 }
6228         }
6229
6230         return found;
6231 }
6232
6233 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6234 {
6235         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6236         struct net_device *dev = info->user_ptr[1];
6237         struct cfg80211_ibss_params ibss;
6238         struct wiphy *wiphy;
6239         struct cfg80211_cached_keys *connkeys = NULL;
6240         int err;
6241
6242         memset(&ibss, 0, sizeof(ibss));
6243
6244         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6245                 return -EINVAL;
6246
6247         if (!info->attrs[NL80211_ATTR_SSID] ||
6248             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6249                 return -EINVAL;
6250
6251         ibss.beacon_interval = 100;
6252
6253         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6254                 ibss.beacon_interval =
6255                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6256                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6257                         return -EINVAL;
6258         }
6259
6260         if (!rdev->ops->join_ibss)
6261                 return -EOPNOTSUPP;
6262
6263         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6264                 return -EOPNOTSUPP;
6265
6266         wiphy = &rdev->wiphy;
6267
6268         if (info->attrs[NL80211_ATTR_MAC]) {
6269                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6270
6271                 if (!is_valid_ether_addr(ibss.bssid))
6272                         return -EINVAL;
6273         }
6274         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6275         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6276
6277         if (info->attrs[NL80211_ATTR_IE]) {
6278                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6279                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6280         }
6281
6282         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6283         if (err)
6284                 return err;
6285
6286         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6287                 return -EINVAL;
6288
6289         if (ibss.chandef.width > NL80211_CHAN_WIDTH_40)
6290                 return -EINVAL;
6291         if (ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
6292             !(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
6293                 return -EINVAL;
6294
6295         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6296         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6297
6298         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6299                 u8 *rates =
6300                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6301                 int n_rates =
6302                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6303                 struct ieee80211_supported_band *sband =
6304                         wiphy->bands[ibss.chandef.chan->band];
6305
6306                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6307                                              &ibss.basic_rates);
6308                 if (err)
6309                         return err;
6310         }
6311
6312         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6313             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6314                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6315                 return -EINVAL;
6316
6317         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6318                 bool no_ht = false;
6319
6320                 connkeys = nl80211_parse_connkeys(rdev,
6321                                           info->attrs[NL80211_ATTR_KEYS],
6322                                           &no_ht);
6323                 if (IS_ERR(connkeys))
6324                         return PTR_ERR(connkeys);
6325
6326                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6327                     no_ht) {
6328                         kfree(connkeys);
6329                         return -EINVAL;
6330                 }
6331         }
6332
6333         ibss.control_port =
6334                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6335
6336         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6337         if (err)
6338                 kfree(connkeys);
6339         return err;
6340 }
6341
6342 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6343 {
6344         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6345         struct net_device *dev = info->user_ptr[1];
6346
6347         if (!rdev->ops->leave_ibss)
6348                 return -EOPNOTSUPP;
6349
6350         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6351                 return -EOPNOTSUPP;
6352
6353         return cfg80211_leave_ibss(rdev, dev, false);
6354 }
6355
6356 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6357 {
6358         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6359         struct net_device *dev = info->user_ptr[1];
6360         int mcast_rate[IEEE80211_NUM_BANDS];
6361         u32 nla_rate;
6362         int err;
6363
6364         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6365             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6366                 return -EOPNOTSUPP;
6367
6368         if (!rdev->ops->set_mcast_rate)
6369                 return -EOPNOTSUPP;
6370
6371         memset(mcast_rate, 0, sizeof(mcast_rate));
6372
6373         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6374                 return -EINVAL;
6375
6376         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6377         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6378                 return -EINVAL;
6379
6380         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6381
6382         return err;
6383 }
6384
6385
6386 #ifdef CONFIG_NL80211_TESTMODE
6387 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6388         .name = "testmode",
6389 };
6390
6391 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6392 {
6393         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6394         int err;
6395
6396         if (!info->attrs[NL80211_ATTR_TESTDATA])
6397                 return -EINVAL;
6398
6399         err = -EOPNOTSUPP;
6400         if (rdev->ops->testmode_cmd) {
6401                 rdev->testmode_info = info;
6402                 err = rdev_testmode_cmd(rdev,
6403                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6404                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6405                 rdev->testmode_info = NULL;
6406         }
6407
6408         return err;
6409 }
6410
6411 static int nl80211_testmode_dump(struct sk_buff *skb,
6412                                  struct netlink_callback *cb)
6413 {
6414         struct cfg80211_registered_device *rdev;
6415         int err;
6416         long phy_idx;
6417         void *data = NULL;
6418         int data_len = 0;
6419
6420         rtnl_lock();
6421
6422         if (cb->args[0]) {
6423                 /*
6424                  * 0 is a valid index, but not valid for args[0],
6425                  * so we need to offset by 1.
6426                  */
6427                 phy_idx = cb->args[0] - 1;
6428         } else {
6429                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6430                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6431                                   nl80211_policy);
6432                 if (err)
6433                         goto out_err;
6434
6435                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6436                                                   nl80211_fam.attrbuf);
6437                 if (IS_ERR(rdev)) {
6438                         err = PTR_ERR(rdev);
6439                         goto out_err;
6440                 }
6441                 phy_idx = rdev->wiphy_idx;
6442                 rdev = NULL;
6443
6444                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6445                         cb->args[1] =
6446                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6447         }
6448
6449         if (cb->args[1]) {
6450                 data = nla_data((void *)cb->args[1]);
6451                 data_len = nla_len((void *)cb->args[1]);
6452         }
6453
6454         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6455         if (!rdev) {
6456                 err = -ENOENT;
6457                 goto out_err;
6458         }
6459
6460         if (!rdev->ops->testmode_dump) {
6461                 err = -EOPNOTSUPP;
6462                 goto out_err;
6463         }
6464
6465         while (1) {
6466                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6467                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6468                                            NL80211_CMD_TESTMODE);
6469                 struct nlattr *tmdata;
6470
6471                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6472                         genlmsg_cancel(skb, hdr);
6473                         break;
6474                 }
6475
6476                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6477                 if (!tmdata) {
6478                         genlmsg_cancel(skb, hdr);
6479                         break;
6480                 }
6481                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6482                 nla_nest_end(skb, tmdata);
6483
6484                 if (err == -ENOBUFS || err == -ENOENT) {
6485                         genlmsg_cancel(skb, hdr);
6486                         break;
6487                 } else if (err) {
6488                         genlmsg_cancel(skb, hdr);
6489                         goto out_err;
6490                 }
6491
6492                 genlmsg_end(skb, hdr);
6493         }
6494
6495         err = skb->len;
6496         /* see above */
6497         cb->args[0] = phy_idx + 1;
6498  out_err:
6499         rtnl_unlock();
6500         return err;
6501 }
6502
6503 static struct sk_buff *
6504 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6505                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6506 {
6507         struct sk_buff *skb;
6508         void *hdr;
6509         struct nlattr *data;
6510
6511         skb = nlmsg_new(approxlen + 100, gfp);
6512         if (!skb)
6513                 return NULL;
6514
6515         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6516         if (!hdr) {
6517                 kfree_skb(skb);
6518                 return NULL;
6519         }
6520
6521         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6522                 goto nla_put_failure;
6523         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6524
6525         ((void **)skb->cb)[0] = rdev;
6526         ((void **)skb->cb)[1] = hdr;
6527         ((void **)skb->cb)[2] = data;
6528
6529         return skb;
6530
6531  nla_put_failure:
6532         kfree_skb(skb);
6533         return NULL;
6534 }
6535
6536 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6537                                                   int approxlen)
6538 {
6539         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6540
6541         if (WARN_ON(!rdev->testmode_info))
6542                 return NULL;
6543
6544         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6545                                 rdev->testmode_info->snd_portid,
6546                                 rdev->testmode_info->snd_seq,
6547                                 GFP_KERNEL);
6548 }
6549 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6550
6551 int cfg80211_testmode_reply(struct sk_buff *skb)
6552 {
6553         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6554         void *hdr = ((void **)skb->cb)[1];
6555         struct nlattr *data = ((void **)skb->cb)[2];
6556
6557         if (WARN_ON(!rdev->testmode_info)) {
6558                 kfree_skb(skb);
6559                 return -EINVAL;
6560         }
6561
6562         nla_nest_end(skb, data);
6563         genlmsg_end(skb, hdr);
6564         return genlmsg_reply(skb, rdev->testmode_info);
6565 }
6566 EXPORT_SYMBOL(cfg80211_testmode_reply);
6567
6568 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6569                                                   int approxlen, gfp_t gfp)
6570 {
6571         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6572
6573         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6574 }
6575 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6576
6577 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6578 {
6579         void *hdr = ((void **)skb->cb)[1];
6580         struct nlattr *data = ((void **)skb->cb)[2];
6581
6582         nla_nest_end(skb, data);
6583         genlmsg_end(skb, hdr);
6584         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
6585 }
6586 EXPORT_SYMBOL(cfg80211_testmode_event);
6587 #endif
6588
6589 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6590 {
6591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6592         struct net_device *dev = info->user_ptr[1];
6593         struct cfg80211_connect_params connect;
6594         struct wiphy *wiphy;
6595         struct cfg80211_cached_keys *connkeys = NULL;
6596         int err;
6597
6598         memset(&connect, 0, sizeof(connect));
6599
6600         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6601                 return -EINVAL;
6602
6603         if (!info->attrs[NL80211_ATTR_SSID] ||
6604             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6605                 return -EINVAL;
6606
6607         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6608                 connect.auth_type =
6609                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6610                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6611                                              NL80211_CMD_CONNECT))
6612                         return -EINVAL;
6613         } else
6614                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6615
6616         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6617
6618         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6619                                       NL80211_MAX_NR_CIPHER_SUITES);
6620         if (err)
6621                 return err;
6622
6623         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6624             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6625                 return -EOPNOTSUPP;
6626
6627         wiphy = &rdev->wiphy;
6628
6629         connect.bg_scan_period = -1;
6630         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6631                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6632                 connect.bg_scan_period =
6633                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6634         }
6635
6636         if (info->attrs[NL80211_ATTR_MAC])
6637                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6638         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6639         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6640
6641         if (info->attrs[NL80211_ATTR_IE]) {
6642                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6643                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6644         }
6645
6646         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6647                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6648                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6649                     connect.mfp != NL80211_MFP_NO)
6650                         return -EINVAL;
6651         } else {
6652                 connect.mfp = NL80211_MFP_NO;
6653         }
6654
6655         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6656                 connect.channel =
6657                         ieee80211_get_channel(wiphy,
6658                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6659                 if (!connect.channel ||
6660                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6661                         return -EINVAL;
6662         }
6663
6664         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6665                 connkeys = nl80211_parse_connkeys(rdev,
6666                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6667                 if (IS_ERR(connkeys))
6668                         return PTR_ERR(connkeys);
6669         }
6670
6671         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6672                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6673
6674         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6675                 memcpy(&connect.ht_capa_mask,
6676                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6677                        sizeof(connect.ht_capa_mask));
6678
6679         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6680                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6681                         kfree(connkeys);
6682                         return -EINVAL;
6683                 }
6684                 memcpy(&connect.ht_capa,
6685                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6686                        sizeof(connect.ht_capa));
6687         }
6688
6689         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6690                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6691
6692         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6693                 memcpy(&connect.vht_capa_mask,
6694                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6695                        sizeof(connect.vht_capa_mask));
6696
6697         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6698                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6699                         kfree(connkeys);
6700                         return -EINVAL;
6701                 }
6702                 memcpy(&connect.vht_capa,
6703                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6704                        sizeof(connect.vht_capa));
6705         }
6706
6707         wdev_lock(dev->ieee80211_ptr);
6708         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6709         wdev_unlock(dev->ieee80211_ptr);
6710         if (err)
6711                 kfree(connkeys);
6712         return err;
6713 }
6714
6715 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6716 {
6717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6718         struct net_device *dev = info->user_ptr[1];
6719         u16 reason;
6720         int ret;
6721
6722         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6723                 reason = WLAN_REASON_DEAUTH_LEAVING;
6724         else
6725                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6726
6727         if (reason == 0)
6728                 return -EINVAL;
6729
6730         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6731             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6732                 return -EOPNOTSUPP;
6733
6734         wdev_lock(dev->ieee80211_ptr);
6735         ret = cfg80211_disconnect(rdev, dev, reason, true);
6736         wdev_unlock(dev->ieee80211_ptr);
6737         return ret;
6738 }
6739
6740 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6741 {
6742         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6743         struct net *net;
6744         int err;
6745         u32 pid;
6746
6747         if (!info->attrs[NL80211_ATTR_PID])
6748                 return -EINVAL;
6749
6750         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6751
6752         net = get_net_ns_by_pid(pid);
6753         if (IS_ERR(net))
6754                 return PTR_ERR(net);
6755
6756         err = 0;
6757
6758         /* check if anything to do */
6759         if (!net_eq(wiphy_net(&rdev->wiphy), net))
6760                 err = cfg80211_switch_netns(rdev, net);
6761
6762         put_net(net);
6763         return err;
6764 }
6765
6766 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6767 {
6768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6769         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6770                         struct cfg80211_pmksa *pmksa) = NULL;
6771         struct net_device *dev = info->user_ptr[1];
6772         struct cfg80211_pmksa pmksa;
6773
6774         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6775
6776         if (!info->attrs[NL80211_ATTR_MAC])
6777                 return -EINVAL;
6778
6779         if (!info->attrs[NL80211_ATTR_PMKID])
6780                 return -EINVAL;
6781
6782         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6783         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6784
6785         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6786             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6787                 return -EOPNOTSUPP;
6788
6789         switch (info->genlhdr->cmd) {
6790         case NL80211_CMD_SET_PMKSA:
6791                 rdev_ops = rdev->ops->set_pmksa;
6792                 break;
6793         case NL80211_CMD_DEL_PMKSA:
6794                 rdev_ops = rdev->ops->del_pmksa;
6795                 break;
6796         default:
6797                 WARN_ON(1);
6798                 break;
6799         }
6800
6801         if (!rdev_ops)
6802                 return -EOPNOTSUPP;
6803
6804         return rdev_ops(&rdev->wiphy, dev, &pmksa);
6805 }
6806
6807 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6808 {
6809         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6810         struct net_device *dev = info->user_ptr[1];
6811
6812         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6813             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6814                 return -EOPNOTSUPP;
6815
6816         if (!rdev->ops->flush_pmksa)
6817                 return -EOPNOTSUPP;
6818
6819         return rdev_flush_pmksa(rdev, dev);
6820 }
6821
6822 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6823 {
6824         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6825         struct net_device *dev = info->user_ptr[1];
6826         u8 action_code, dialog_token;
6827         u16 status_code;
6828         u8 *peer;
6829
6830         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6831             !rdev->ops->tdls_mgmt)
6832                 return -EOPNOTSUPP;
6833
6834         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6835             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6836             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6837             !info->attrs[NL80211_ATTR_IE] ||
6838             !info->attrs[NL80211_ATTR_MAC])
6839                 return -EINVAL;
6840
6841         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6842         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6843         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6844         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6845
6846         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6847                               dialog_token, status_code,
6848                               nla_data(info->attrs[NL80211_ATTR_IE]),
6849                               nla_len(info->attrs[NL80211_ATTR_IE]));
6850 }
6851
6852 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6853 {
6854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6855         struct net_device *dev = info->user_ptr[1];
6856         enum nl80211_tdls_operation operation;
6857         u8 *peer;
6858
6859         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6860             !rdev->ops->tdls_oper)
6861                 return -EOPNOTSUPP;
6862
6863         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6864             !info->attrs[NL80211_ATTR_MAC])
6865                 return -EINVAL;
6866
6867         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6868         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6869
6870         return rdev_tdls_oper(rdev, dev, peer, operation);
6871 }
6872
6873 static int nl80211_remain_on_channel(struct sk_buff *skb,
6874                                      struct genl_info *info)
6875 {
6876         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6877         struct wireless_dev *wdev = info->user_ptr[1];
6878         struct cfg80211_chan_def chandef;
6879         struct sk_buff *msg;
6880         void *hdr;
6881         u64 cookie;
6882         u32 duration;
6883         int err;
6884
6885         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6886             !info->attrs[NL80211_ATTR_DURATION])
6887                 return -EINVAL;
6888
6889         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6890
6891         if (!rdev->ops->remain_on_channel ||
6892             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6893                 return -EOPNOTSUPP;
6894
6895         /*
6896          * We should be on that channel for at least a minimum amount of
6897          * time (10ms) but no longer than the driver supports.
6898          */
6899         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6900             duration > rdev->wiphy.max_remain_on_channel_duration)
6901                 return -EINVAL;
6902
6903         err = nl80211_parse_chandef(rdev, info, &chandef);
6904         if (err)
6905                 return err;
6906
6907         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6908         if (!msg)
6909                 return -ENOMEM;
6910
6911         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6912                              NL80211_CMD_REMAIN_ON_CHANNEL);
6913
6914         if (IS_ERR(hdr)) {
6915                 err = PTR_ERR(hdr);
6916                 goto free_msg;
6917         }
6918
6919         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
6920                                      duration, &cookie);
6921
6922         if (err)
6923                 goto free_msg;
6924
6925         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6926                 goto nla_put_failure;
6927
6928         genlmsg_end(msg, hdr);
6929
6930         return genlmsg_reply(msg, info);
6931
6932  nla_put_failure:
6933         err = -ENOBUFS;
6934  free_msg:
6935         nlmsg_free(msg);
6936         return err;
6937 }
6938
6939 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
6940                                             struct genl_info *info)
6941 {
6942         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6943         struct wireless_dev *wdev = info->user_ptr[1];
6944         u64 cookie;
6945
6946         if (!info->attrs[NL80211_ATTR_COOKIE])
6947                 return -EINVAL;
6948
6949         if (!rdev->ops->cancel_remain_on_channel)
6950                 return -EOPNOTSUPP;
6951
6952         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6953
6954         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
6955 }
6956
6957 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
6958                            u8 *rates, u8 rates_len)
6959 {
6960         u8 i;
6961         u32 mask = 0;
6962
6963         for (i = 0; i < rates_len; i++) {
6964                 int rate = (rates[i] & 0x7f) * 5;
6965                 int ridx;
6966                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
6967                         struct ieee80211_rate *srate =
6968                                 &sband->bitrates[ridx];
6969                         if (rate == srate->bitrate) {
6970                                 mask |= 1 << ridx;
6971                                 break;
6972                         }
6973                 }
6974                 if (ridx == sband->n_bitrates)
6975                         return 0; /* rate not found */
6976         }
6977
6978         return mask;
6979 }
6980
6981 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6982                                u8 *rates, u8 rates_len,
6983                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6984 {
6985         u8 i;
6986
6987         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6988
6989         for (i = 0; i < rates_len; i++) {
6990                 int ridx, rbit;
6991
6992                 ridx = rates[i] / 8;
6993                 rbit = BIT(rates[i] % 8);
6994
6995                 /* check validity */
6996                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6997                         return false;
6998
6999                 /* check availability */
7000                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7001                         mcs[ridx] |= rbit;
7002                 else
7003                         return false;
7004         }
7005
7006         return true;
7007 }
7008
7009 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7010         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7011                                     .len = NL80211_MAX_SUPP_RATES },
7012         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7013                                  .len = NL80211_MAX_SUPP_HT_RATES },
7014 };
7015
7016 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7017                                        struct genl_info *info)
7018 {
7019         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7020         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7021         struct cfg80211_bitrate_mask mask;
7022         int rem, i;
7023         struct net_device *dev = info->user_ptr[1];
7024         struct nlattr *tx_rates;
7025         struct ieee80211_supported_band *sband;
7026
7027         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7028                 return -EINVAL;
7029
7030         if (!rdev->ops->set_bitrate_mask)
7031                 return -EOPNOTSUPP;
7032
7033         memset(&mask, 0, sizeof(mask));
7034         /* Default to all rates enabled */
7035         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7036                 sband = rdev->wiphy.bands[i];
7037                 mask.control[i].legacy =
7038                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7039                 if (sband)
7040                         memcpy(mask.control[i].mcs,
7041                                sband->ht_cap.mcs.rx_mask,
7042                                sizeof(mask.control[i].mcs));
7043                 else
7044                         memset(mask.control[i].mcs, 0,
7045                                sizeof(mask.control[i].mcs));
7046         }
7047
7048         /*
7049          * The nested attribute uses enum nl80211_band as the index. This maps
7050          * directly to the enum ieee80211_band values used in cfg80211.
7051          */
7052         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7053         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7054         {
7055                 enum ieee80211_band band = nla_type(tx_rates);
7056                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7057                         return -EINVAL;
7058                 sband = rdev->wiphy.bands[band];
7059                 if (sband == NULL)
7060                         return -EINVAL;
7061                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7062                           nla_len(tx_rates), nl80211_txattr_policy);
7063                 if (tb[NL80211_TXRATE_LEGACY]) {
7064                         mask.control[band].legacy = rateset_to_mask(
7065                                 sband,
7066                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7067                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7068                         if ((mask.control[band].legacy == 0) &&
7069                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7070                                 return -EINVAL;
7071                 }
7072                 if (tb[NL80211_TXRATE_MCS]) {
7073                         if (!ht_rateset_to_mask(
7074                                         sband,
7075                                         nla_data(tb[NL80211_TXRATE_MCS]),
7076                                         nla_len(tb[NL80211_TXRATE_MCS]),
7077                                         mask.control[band].mcs))
7078                                 return -EINVAL;
7079                 }
7080
7081                 if (mask.control[band].legacy == 0) {
7082                         /* don't allow empty legacy rates if HT
7083                          * is not even supported. */
7084                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7085                                 return -EINVAL;
7086
7087                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7088                                 if (mask.control[band].mcs[i])
7089                                         break;
7090
7091                         /* legacy and mcs rates may not be both empty */
7092                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7093                                 return -EINVAL;
7094                 }
7095         }
7096
7097         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7098 }
7099
7100 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7101 {
7102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7103         struct wireless_dev *wdev = info->user_ptr[1];
7104         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7105
7106         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7107                 return -EINVAL;
7108
7109         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7110                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7111
7112         switch (wdev->iftype) {
7113         case NL80211_IFTYPE_STATION:
7114         case NL80211_IFTYPE_ADHOC:
7115         case NL80211_IFTYPE_P2P_CLIENT:
7116         case NL80211_IFTYPE_AP:
7117         case NL80211_IFTYPE_AP_VLAN:
7118         case NL80211_IFTYPE_MESH_POINT:
7119         case NL80211_IFTYPE_P2P_GO:
7120         case NL80211_IFTYPE_P2P_DEVICE:
7121                 break;
7122         default:
7123                 return -EOPNOTSUPP;
7124         }
7125
7126         /* not much point in registering if we can't reply */
7127         if (!rdev->ops->mgmt_tx)
7128                 return -EOPNOTSUPP;
7129
7130         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7131                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7132                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7133 }
7134
7135 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7136 {
7137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7138         struct wireless_dev *wdev = info->user_ptr[1];
7139         struct cfg80211_chan_def chandef;
7140         int err;
7141         void *hdr = NULL;
7142         u64 cookie;
7143         struct sk_buff *msg = NULL;
7144         unsigned int wait = 0;
7145         bool offchan, no_cck, dont_wait_for_ack;
7146
7147         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7148
7149         if (!info->attrs[NL80211_ATTR_FRAME])
7150                 return -EINVAL;
7151
7152         if (!rdev->ops->mgmt_tx)
7153                 return -EOPNOTSUPP;
7154
7155         switch (wdev->iftype) {
7156         case NL80211_IFTYPE_STATION:
7157         case NL80211_IFTYPE_ADHOC:
7158         case NL80211_IFTYPE_P2P_CLIENT:
7159         case NL80211_IFTYPE_AP:
7160         case NL80211_IFTYPE_AP_VLAN:
7161         case NL80211_IFTYPE_MESH_POINT:
7162         case NL80211_IFTYPE_P2P_GO:
7163         case NL80211_IFTYPE_P2P_DEVICE:
7164                 break;
7165         default:
7166                 return -EOPNOTSUPP;
7167         }
7168
7169         if (info->attrs[NL80211_ATTR_DURATION]) {
7170                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7171                         return -EINVAL;
7172                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7173
7174                 /*
7175                  * We should wait on the channel for at least a minimum amount
7176                  * of time (10ms) but no longer than the driver supports.
7177                  */
7178                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7179                     wait > rdev->wiphy.max_remain_on_channel_duration)
7180                         return -EINVAL;
7181
7182         }
7183
7184         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7185
7186         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7187                 return -EINVAL;
7188
7189         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7190
7191         err = nl80211_parse_chandef(rdev, info, &chandef);
7192         if (err)
7193                 return err;
7194
7195         if (!dont_wait_for_ack) {
7196                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7197                 if (!msg)
7198                         return -ENOMEM;
7199
7200                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7201                                      NL80211_CMD_FRAME);
7202
7203                 if (IS_ERR(hdr)) {
7204                         err = PTR_ERR(hdr);
7205                         goto free_msg;
7206                 }
7207         }
7208
7209         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7210                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7211                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7212                                     no_cck, dont_wait_for_ack, &cookie);
7213         if (err)
7214                 goto free_msg;
7215
7216         if (msg) {
7217                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7218                         goto nla_put_failure;
7219
7220                 genlmsg_end(msg, hdr);
7221                 return genlmsg_reply(msg, info);
7222         }
7223
7224         return 0;
7225
7226  nla_put_failure:
7227         err = -ENOBUFS;
7228  free_msg:
7229         nlmsg_free(msg);
7230         return err;
7231 }
7232
7233 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7234 {
7235         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7236         struct wireless_dev *wdev = info->user_ptr[1];
7237         u64 cookie;
7238
7239         if (!info->attrs[NL80211_ATTR_COOKIE])
7240                 return -EINVAL;
7241
7242         if (!rdev->ops->mgmt_tx_cancel_wait)
7243                 return -EOPNOTSUPP;
7244
7245         switch (wdev->iftype) {
7246         case NL80211_IFTYPE_STATION:
7247         case NL80211_IFTYPE_ADHOC:
7248         case NL80211_IFTYPE_P2P_CLIENT:
7249         case NL80211_IFTYPE_AP:
7250         case NL80211_IFTYPE_AP_VLAN:
7251         case NL80211_IFTYPE_P2P_GO:
7252         case NL80211_IFTYPE_P2P_DEVICE:
7253                 break;
7254         default:
7255                 return -EOPNOTSUPP;
7256         }
7257
7258         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7259
7260         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7261 }
7262
7263 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7264 {
7265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7266         struct wireless_dev *wdev;
7267         struct net_device *dev = info->user_ptr[1];
7268         u8 ps_state;
7269         bool state;
7270         int err;
7271
7272         if (!info->attrs[NL80211_ATTR_PS_STATE])
7273                 return -EINVAL;
7274
7275         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7276
7277         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7278                 return -EINVAL;
7279
7280         wdev = dev->ieee80211_ptr;
7281
7282         if (!rdev->ops->set_power_mgmt)
7283                 return -EOPNOTSUPP;
7284
7285         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7286
7287         if (state == wdev->ps)
7288                 return 0;
7289
7290         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7291         if (!err)
7292                 wdev->ps = state;
7293         return err;
7294 }
7295
7296 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7297 {
7298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7299         enum nl80211_ps_state ps_state;
7300         struct wireless_dev *wdev;
7301         struct net_device *dev = info->user_ptr[1];
7302         struct sk_buff *msg;
7303         void *hdr;
7304         int err;
7305
7306         wdev = dev->ieee80211_ptr;
7307
7308         if (!rdev->ops->set_power_mgmt)
7309                 return -EOPNOTSUPP;
7310
7311         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7312         if (!msg)
7313                 return -ENOMEM;
7314
7315         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7316                              NL80211_CMD_GET_POWER_SAVE);
7317         if (!hdr) {
7318                 err = -ENOBUFS;
7319                 goto free_msg;
7320         }
7321
7322         if (wdev->ps)
7323                 ps_state = NL80211_PS_ENABLED;
7324         else
7325                 ps_state = NL80211_PS_DISABLED;
7326
7327         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7328                 goto nla_put_failure;
7329
7330         genlmsg_end(msg, hdr);
7331         return genlmsg_reply(msg, info);
7332
7333  nla_put_failure:
7334         err = -ENOBUFS;
7335  free_msg:
7336         nlmsg_free(msg);
7337         return err;
7338 }
7339
7340 static struct nla_policy
7341 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7342         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7343         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7344         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7345         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7346         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7347         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7348 };
7349
7350 static int nl80211_set_cqm_txe(struct genl_info *info,
7351                                u32 rate, u32 pkts, u32 intvl)
7352 {
7353         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7354         struct wireless_dev *wdev;
7355         struct net_device *dev = info->user_ptr[1];
7356
7357         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7358                 return -EINVAL;
7359
7360         wdev = dev->ieee80211_ptr;
7361
7362         if (!rdev->ops->set_cqm_txe_config)
7363                 return -EOPNOTSUPP;
7364
7365         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7366             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7367                 return -EOPNOTSUPP;
7368
7369         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7370 }
7371
7372 static int nl80211_set_cqm_rssi(struct genl_info *info,
7373                                 s32 threshold, u32 hysteresis)
7374 {
7375         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7376         struct wireless_dev *wdev;
7377         struct net_device *dev = info->user_ptr[1];
7378
7379         if (threshold > 0)
7380                 return -EINVAL;
7381
7382         wdev = dev->ieee80211_ptr;
7383
7384         if (!rdev->ops->set_cqm_rssi_config)
7385                 return -EOPNOTSUPP;
7386
7387         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7388             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7389                 return -EOPNOTSUPP;
7390
7391         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7392 }
7393
7394 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7395 {
7396         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7397         struct nlattr *cqm;
7398         int err;
7399
7400         cqm = info->attrs[NL80211_ATTR_CQM];
7401         if (!cqm) {
7402                 err = -EINVAL;
7403                 goto out;
7404         }
7405
7406         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7407                                nl80211_attr_cqm_policy);
7408         if (err)
7409                 goto out;
7410
7411         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7412             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7413                 s32 threshold;
7414                 u32 hysteresis;
7415                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7416                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7417                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7418         } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7419                    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7420                    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7421                 u32 rate, pkts, intvl;
7422                 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7423                 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7424                 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7425                 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7426         } else
7427                 err = -EINVAL;
7428
7429 out:
7430         return err;
7431 }
7432
7433 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7434 {
7435         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7436         struct net_device *dev = info->user_ptr[1];
7437         struct mesh_config cfg;
7438         struct mesh_setup setup;
7439         int err;
7440
7441         /* start with default */
7442         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7443         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7444
7445         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7446                 /* and parse parameters if given */
7447                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7448                 if (err)
7449                         return err;
7450         }
7451
7452         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7453             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7454                 return -EINVAL;
7455
7456         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7457         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7458
7459         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7460             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7461                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7462                         return -EINVAL;
7463
7464         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7465                 setup.beacon_interval =
7466                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7467                 if (setup.beacon_interval < 10 ||
7468                     setup.beacon_interval > 10000)
7469                         return -EINVAL;
7470         }
7471
7472         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7473                 setup.dtim_period =
7474                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7475                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7476                         return -EINVAL;
7477         }
7478
7479         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7480                 /* parse additional setup parameters if given */
7481                 err = nl80211_parse_mesh_setup(info, &setup);
7482                 if (err)
7483                         return err;
7484         }
7485
7486         if (setup.user_mpm)
7487                 cfg.auto_open_plinks = false;
7488
7489         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7490                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7491                 if (err)
7492                         return err;
7493         } else {
7494                 /* cfg80211_join_mesh() will sort it out */
7495                 setup.chandef.chan = NULL;
7496         }
7497
7498         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7499 }
7500
7501 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7502 {
7503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7504         struct net_device *dev = info->user_ptr[1];
7505
7506         return cfg80211_leave_mesh(rdev, dev);
7507 }
7508
7509 #ifdef CONFIG_PM
7510 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7511                                         struct cfg80211_registered_device *rdev)
7512 {
7513         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7514         struct nlattr *nl_pats, *nl_pat;
7515         int i, pat_len;
7516
7517         if (!wowlan->n_patterns)
7518                 return 0;
7519
7520         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7521         if (!nl_pats)
7522                 return -ENOBUFS;
7523
7524         for (i = 0; i < wowlan->n_patterns; i++) {
7525                 nl_pat = nla_nest_start(msg, i + 1);
7526                 if (!nl_pat)
7527                         return -ENOBUFS;
7528                 pat_len = wowlan->patterns[i].pattern_len;
7529                 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
7530                             DIV_ROUND_UP(pat_len, 8),
7531                             wowlan->patterns[i].mask) ||
7532                     nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
7533                             pat_len, wowlan->patterns[i].pattern) ||
7534                     nla_put_u32(msg, NL80211_WOWLAN_PKTPAT_OFFSET,
7535                                 wowlan->patterns[i].pkt_offset))
7536                         return -ENOBUFS;
7537                 nla_nest_end(msg, nl_pat);
7538         }
7539         nla_nest_end(msg, nl_pats);
7540
7541         return 0;
7542 }
7543
7544 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7545                                    struct cfg80211_wowlan_tcp *tcp)
7546 {
7547         struct nlattr *nl_tcp;
7548
7549         if (!tcp)
7550                 return 0;
7551
7552         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7553         if (!nl_tcp)
7554                 return -ENOBUFS;
7555
7556         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7557             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7558             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7559             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7560             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7561             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7562                     tcp->payload_len, tcp->payload) ||
7563             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7564                         tcp->data_interval) ||
7565             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7566                     tcp->wake_len, tcp->wake_data) ||
7567             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7568                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7569                 return -ENOBUFS;
7570
7571         if (tcp->payload_seq.len &&
7572             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7573                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7574                 return -ENOBUFS;
7575
7576         if (tcp->payload_tok.len &&
7577             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7578                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7579                     &tcp->payload_tok))
7580                 return -ENOBUFS;
7581
7582         nla_nest_end(msg, nl_tcp);
7583
7584         return 0;
7585 }
7586
7587 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7588 {
7589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7590         struct sk_buff *msg;
7591         void *hdr;
7592         u32 size = NLMSG_DEFAULT_SIZE;
7593
7594         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7595             !rdev->wiphy.wowlan.tcp)
7596                 return -EOPNOTSUPP;
7597
7598         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7599                 /* adjust size to have room for all the data */
7600                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7601                         rdev->wiphy.wowlan_config->tcp->payload_len +
7602                         rdev->wiphy.wowlan_config->tcp->wake_len +
7603                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7604         }
7605
7606         msg = nlmsg_new(size, GFP_KERNEL);
7607         if (!msg)
7608                 return -ENOMEM;
7609
7610         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7611                              NL80211_CMD_GET_WOWLAN);
7612         if (!hdr)
7613                 goto nla_put_failure;
7614
7615         if (rdev->wiphy.wowlan_config) {
7616                 struct nlattr *nl_wowlan;
7617
7618                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7619                 if (!nl_wowlan)
7620                         goto nla_put_failure;
7621
7622                 if ((rdev->wiphy.wowlan_config->any &&
7623                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7624                     (rdev->wiphy.wowlan_config->disconnect &&
7625                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7626                     (rdev->wiphy.wowlan_config->magic_pkt &&
7627                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7628                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7629                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7630                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7631                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7632                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7633                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7634                     (rdev->wiphy.wowlan_config->rfkill_release &&
7635                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7636                         goto nla_put_failure;
7637
7638                 if (nl80211_send_wowlan_patterns(msg, rdev))
7639                         goto nla_put_failure;
7640
7641                 if (nl80211_send_wowlan_tcp(msg,
7642                                             rdev->wiphy.wowlan_config->tcp))
7643                         goto nla_put_failure;
7644
7645                 nla_nest_end(msg, nl_wowlan);
7646         }
7647
7648         genlmsg_end(msg, hdr);
7649         return genlmsg_reply(msg, info);
7650
7651 nla_put_failure:
7652         nlmsg_free(msg);
7653         return -ENOBUFS;
7654 }
7655
7656 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7657                                     struct nlattr *attr,
7658                                     struct cfg80211_wowlan *trig)
7659 {
7660         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7661         struct cfg80211_wowlan_tcp *cfg;
7662         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7663         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7664         u32 size;
7665         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7666         int err, port;
7667
7668         if (!rdev->wiphy.wowlan.tcp)
7669                 return -EINVAL;
7670
7671         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7672                         nla_data(attr), nla_len(attr),
7673                         nl80211_wowlan_tcp_policy);
7674         if (err)
7675                 return err;
7676
7677         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7678             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7679             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7680             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7681             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7682             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7683             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7684             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7685                 return -EINVAL;
7686
7687         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7688         if (data_size > rdev->wiphy.wowlan.tcp->data_payload_max)
7689                 return -EINVAL;
7690
7691         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7692                         rdev->wiphy.wowlan.tcp->data_interval_max ||
7693             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7694                 return -EINVAL;
7695
7696         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7697         if (wake_size > rdev->wiphy.wowlan.tcp->wake_payload_max)
7698                 return -EINVAL;
7699
7700         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7701         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7702                 return -EINVAL;
7703
7704         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7705                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7706
7707                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7708                 tokens_size = tokln - sizeof(*tok);
7709
7710                 if (!tok->len || tokens_size % tok->len)
7711                         return -EINVAL;
7712                 if (!rdev->wiphy.wowlan.tcp->tok)
7713                         return -EINVAL;
7714                 if (tok->len > rdev->wiphy.wowlan.tcp->tok->max_len)
7715                         return -EINVAL;
7716                 if (tok->len < rdev->wiphy.wowlan.tcp->tok->min_len)
7717                         return -EINVAL;
7718                 if (tokens_size > rdev->wiphy.wowlan.tcp->tok->bufsize)
7719                         return -EINVAL;
7720                 if (tok->offset + tok->len > data_size)
7721                         return -EINVAL;
7722         }
7723
7724         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7725                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7726                 if (!rdev->wiphy.wowlan.tcp->seq)
7727                         return -EINVAL;
7728                 if (seq->len == 0 || seq->len > 4)
7729                         return -EINVAL;
7730                 if (seq->len + seq->offset > data_size)
7731                         return -EINVAL;
7732         }
7733
7734         size = sizeof(*cfg);
7735         size += data_size;
7736         size += wake_size + wake_mask_size;
7737         size += tokens_size;
7738
7739         cfg = kzalloc(size, GFP_KERNEL);
7740         if (!cfg)
7741                 return -ENOMEM;
7742         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7743         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7744         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7745                ETH_ALEN);
7746         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7747                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7748         else
7749                 port = 0;
7750 #ifdef CONFIG_INET
7751         /* allocate a socket and port for it and use it */
7752         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7753                             IPPROTO_TCP, &cfg->sock, 1);
7754         if (err) {
7755                 kfree(cfg);
7756                 return err;
7757         }
7758         if (inet_csk_get_port(cfg->sock->sk, port)) {
7759                 sock_release(cfg->sock);
7760                 kfree(cfg);
7761                 return -EADDRINUSE;
7762         }
7763         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7764 #else
7765         if (!port) {
7766                 kfree(cfg);
7767                 return -EINVAL;
7768         }
7769         cfg->src_port = port;
7770 #endif
7771
7772         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7773         cfg->payload_len = data_size;
7774         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7775         memcpy((void *)cfg->payload,
7776                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7777                data_size);
7778         if (seq)
7779                 cfg->payload_seq = *seq;
7780         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7781         cfg->wake_len = wake_size;
7782         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7783         memcpy((void *)cfg->wake_data,
7784                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7785                wake_size);
7786         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7787                          data_size + wake_size;
7788         memcpy((void *)cfg->wake_mask,
7789                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7790                wake_mask_size);
7791         if (tok) {
7792                 cfg->tokens_size = tokens_size;
7793                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7794         }
7795
7796         trig->tcp = cfg;
7797
7798         return 0;
7799 }
7800
7801 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7802 {
7803         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7804         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7805         struct cfg80211_wowlan new_triggers = {};
7806         struct cfg80211_wowlan *ntrig;
7807         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
7808         int err, i;
7809         bool prev_enabled = rdev->wiphy.wowlan_config;
7810
7811         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns &&
7812             !rdev->wiphy.wowlan.tcp)
7813                 return -EOPNOTSUPP;
7814
7815         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7816                 cfg80211_rdev_free_wowlan(rdev);
7817                 rdev->wiphy.wowlan_config = NULL;
7818                 goto set_wakeup;
7819         }
7820
7821         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7822                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7823                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7824                         nl80211_wowlan_policy);
7825         if (err)
7826                 return err;
7827
7828         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7829                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7830                         return -EINVAL;
7831                 new_triggers.any = true;
7832         }
7833
7834         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7835                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7836                         return -EINVAL;
7837                 new_triggers.disconnect = true;
7838         }
7839
7840         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7841                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7842                         return -EINVAL;
7843                 new_triggers.magic_pkt = true;
7844         }
7845
7846         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7847                 return -EINVAL;
7848
7849         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7850                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7851                         return -EINVAL;
7852                 new_triggers.gtk_rekey_failure = true;
7853         }
7854
7855         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7856                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7857                         return -EINVAL;
7858                 new_triggers.eap_identity_req = true;
7859         }
7860
7861         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7862                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7863                         return -EINVAL;
7864                 new_triggers.four_way_handshake = true;
7865         }
7866
7867         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7868                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7869                         return -EINVAL;
7870                 new_triggers.rfkill_release = true;
7871         }
7872
7873         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7874                 struct nlattr *pat;
7875                 int n_patterns = 0;
7876                 int rem, pat_len, mask_len, pkt_offset;
7877                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
7878
7879                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7880                                     rem)
7881                         n_patterns++;
7882                 if (n_patterns > wowlan->n_patterns)
7883                         return -EINVAL;
7884
7885                 new_triggers.patterns = kcalloc(n_patterns,
7886                                                 sizeof(new_triggers.patterns[0]),
7887                                                 GFP_KERNEL);
7888                 if (!new_triggers.patterns)
7889                         return -ENOMEM;
7890
7891                 new_triggers.n_patterns = n_patterns;
7892                 i = 0;
7893
7894                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7895                                     rem) {
7896                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
7897                                   nla_data(pat), nla_len(pat), NULL);
7898                         err = -EINVAL;
7899                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
7900                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
7901                                 goto error;
7902                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
7903                         mask_len = DIV_ROUND_UP(pat_len, 8);
7904                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
7905                             mask_len)
7906                                 goto error;
7907                         if (pat_len > wowlan->pattern_max_len ||
7908                             pat_len < wowlan->pattern_min_len)
7909                                 goto error;
7910
7911                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET])
7912                                 pkt_offset = 0;
7913                         else
7914                                 pkt_offset = nla_get_u32(
7915                                         pat_tb[NL80211_WOWLAN_PKTPAT_OFFSET]);
7916                         if (pkt_offset > wowlan->max_pkt_offset)
7917                                 goto error;
7918                         new_triggers.patterns[i].pkt_offset = pkt_offset;
7919
7920                         new_triggers.patterns[i].mask =
7921                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
7922                         if (!new_triggers.patterns[i].mask) {
7923                                 err = -ENOMEM;
7924                                 goto error;
7925                         }
7926                         new_triggers.patterns[i].pattern =
7927                                 new_triggers.patterns[i].mask + mask_len;
7928                         memcpy(new_triggers.patterns[i].mask,
7929                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
7930                                mask_len);
7931                         new_triggers.patterns[i].pattern_len = pat_len;
7932                         memcpy(new_triggers.patterns[i].pattern,
7933                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
7934                                pat_len);
7935                         i++;
7936                 }
7937         }
7938
7939         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
7940                 err = nl80211_parse_wowlan_tcp(
7941                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
7942                         &new_triggers);
7943                 if (err)
7944                         goto error;
7945         }
7946
7947         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
7948         if (!ntrig) {
7949                 err = -ENOMEM;
7950                 goto error;
7951         }
7952         cfg80211_rdev_free_wowlan(rdev);
7953         rdev->wiphy.wowlan_config = ntrig;
7954
7955  set_wakeup:
7956         if (rdev->ops->set_wakeup &&
7957             prev_enabled != !!rdev->wiphy.wowlan_config)
7958                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
7959
7960         return 0;
7961  error:
7962         for (i = 0; i < new_triggers.n_patterns; i++)
7963                 kfree(new_triggers.patterns[i].mask);
7964         kfree(new_triggers.patterns);
7965         if (new_triggers.tcp && new_triggers.tcp->sock)
7966                 sock_release(new_triggers.tcp->sock);
7967         kfree(new_triggers.tcp);
7968         return err;
7969 }
7970 #endif
7971
7972 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
7973 {
7974         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7975         struct net_device *dev = info->user_ptr[1];
7976         struct wireless_dev *wdev = dev->ieee80211_ptr;
7977         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
7978         struct cfg80211_gtk_rekey_data rekey_data;
7979         int err;
7980
7981         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
7982                 return -EINVAL;
7983
7984         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
7985                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
7986                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
7987                         nl80211_rekey_policy);
7988         if (err)
7989                 return err;
7990
7991         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
7992                 return -ERANGE;
7993         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
7994                 return -ERANGE;
7995         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
7996                 return -ERANGE;
7997
7998         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
7999                NL80211_KEK_LEN);
8000         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8001                NL80211_KCK_LEN);
8002         memcpy(rekey_data.replay_ctr,
8003                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8004                NL80211_REPLAY_CTR_LEN);
8005
8006         wdev_lock(wdev);
8007         if (!wdev->current_bss) {
8008                 err = -ENOTCONN;
8009                 goto out;
8010         }
8011
8012         if (!rdev->ops->set_rekey_data) {
8013                 err = -EOPNOTSUPP;
8014                 goto out;
8015         }
8016
8017         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8018  out:
8019         wdev_unlock(wdev);
8020         return err;
8021 }
8022
8023 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8024                                              struct genl_info *info)
8025 {
8026         struct net_device *dev = info->user_ptr[1];
8027         struct wireless_dev *wdev = dev->ieee80211_ptr;
8028
8029         if (wdev->iftype != NL80211_IFTYPE_AP &&
8030             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8031                 return -EINVAL;
8032
8033         if (wdev->ap_unexpected_nlportid)
8034                 return -EBUSY;
8035
8036         wdev->ap_unexpected_nlportid = info->snd_portid;
8037         return 0;
8038 }
8039
8040 static int nl80211_probe_client(struct sk_buff *skb,
8041                                 struct genl_info *info)
8042 {
8043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8044         struct net_device *dev = info->user_ptr[1];
8045         struct wireless_dev *wdev = dev->ieee80211_ptr;
8046         struct sk_buff *msg;
8047         void *hdr;
8048         const u8 *addr;
8049         u64 cookie;
8050         int err;
8051
8052         if (wdev->iftype != NL80211_IFTYPE_AP &&
8053             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8054                 return -EOPNOTSUPP;
8055
8056         if (!info->attrs[NL80211_ATTR_MAC])
8057                 return -EINVAL;
8058
8059         if (!rdev->ops->probe_client)
8060                 return -EOPNOTSUPP;
8061
8062         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8063         if (!msg)
8064                 return -ENOMEM;
8065
8066         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8067                              NL80211_CMD_PROBE_CLIENT);
8068
8069         if (IS_ERR(hdr)) {
8070                 err = PTR_ERR(hdr);
8071                 goto free_msg;
8072         }
8073
8074         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8075
8076         err = rdev_probe_client(rdev, dev, addr, &cookie);
8077         if (err)
8078                 goto free_msg;
8079
8080         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8081                 goto nla_put_failure;
8082
8083         genlmsg_end(msg, hdr);
8084
8085         return genlmsg_reply(msg, info);
8086
8087  nla_put_failure:
8088         err = -ENOBUFS;
8089  free_msg:
8090         nlmsg_free(msg);
8091         return err;
8092 }
8093
8094 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8095 {
8096         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8097         struct cfg80211_beacon_registration *reg, *nreg;
8098         int rv;
8099
8100         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8101                 return -EOPNOTSUPP;
8102
8103         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8104         if (!nreg)
8105                 return -ENOMEM;
8106
8107         /* First, check if already registered. */
8108         spin_lock_bh(&rdev->beacon_registrations_lock);
8109         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8110                 if (reg->nlportid == info->snd_portid) {
8111                         rv = -EALREADY;
8112                         goto out_err;
8113                 }
8114         }
8115         /* Add it to the list */
8116         nreg->nlportid = info->snd_portid;
8117         list_add(&nreg->list, &rdev->beacon_registrations);
8118
8119         spin_unlock_bh(&rdev->beacon_registrations_lock);
8120
8121         return 0;
8122 out_err:
8123         spin_unlock_bh(&rdev->beacon_registrations_lock);
8124         kfree(nreg);
8125         return rv;
8126 }
8127
8128 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8129 {
8130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8131         struct wireless_dev *wdev = info->user_ptr[1];
8132         int err;
8133
8134         if (!rdev->ops->start_p2p_device)
8135                 return -EOPNOTSUPP;
8136
8137         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8138                 return -EOPNOTSUPP;
8139
8140         if (wdev->p2p_started)
8141                 return 0;
8142
8143         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8144         if (err)
8145                 return err;
8146
8147         err = rdev_start_p2p_device(rdev, wdev);
8148         if (err)
8149                 return err;
8150
8151         wdev->p2p_started = true;
8152         rdev->opencount++;
8153
8154         return 0;
8155 }
8156
8157 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8158 {
8159         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8160         struct wireless_dev *wdev = info->user_ptr[1];
8161
8162         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8163                 return -EOPNOTSUPP;
8164
8165         if (!rdev->ops->stop_p2p_device)
8166                 return -EOPNOTSUPP;
8167
8168         cfg80211_stop_p2p_device(rdev, wdev);
8169
8170         return 0;
8171 }
8172
8173 static int nl80211_get_protocol_features(struct sk_buff *skb,
8174                                          struct genl_info *info)
8175 {
8176         void *hdr;
8177         struct sk_buff *msg;
8178
8179         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8180         if (!msg)
8181                 return -ENOMEM;
8182
8183         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8184                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8185         if (!hdr)
8186                 goto nla_put_failure;
8187
8188         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8189                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8190                 goto nla_put_failure;
8191
8192         genlmsg_end(msg, hdr);
8193         return genlmsg_reply(msg, info);
8194
8195  nla_put_failure:
8196         kfree_skb(msg);
8197         return -ENOBUFS;
8198 }
8199
8200 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8201 {
8202         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8203         struct cfg80211_update_ft_ies_params ft_params;
8204         struct net_device *dev = info->user_ptr[1];
8205
8206         if (!rdev->ops->update_ft_ies)
8207                 return -EOPNOTSUPP;
8208
8209         if (!info->attrs[NL80211_ATTR_MDID] ||
8210             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8211                 return -EINVAL;
8212
8213         memset(&ft_params, 0, sizeof(ft_params));
8214         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8215         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8216         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8217
8218         return rdev_update_ft_ies(rdev, dev, &ft_params);
8219 }
8220
8221 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8222                                        struct genl_info *info)
8223 {
8224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8225         struct wireless_dev *wdev = info->user_ptr[1];
8226         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8227         u16 duration;
8228         int ret;
8229
8230         if (!rdev->ops->crit_proto_start)
8231                 return -EOPNOTSUPP;
8232
8233         if (WARN_ON(!rdev->ops->crit_proto_stop))
8234                 return -EINVAL;
8235
8236         if (rdev->crit_proto_nlportid)
8237                 return -EBUSY;
8238
8239         /* determine protocol if provided */
8240         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8241                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8242
8243         if (proto >= NUM_NL80211_CRIT_PROTO)
8244                 return -EINVAL;
8245
8246         /* timeout must be provided */
8247         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8248                 return -EINVAL;
8249
8250         duration =
8251                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8252
8253         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8254                 return -ERANGE;
8255
8256         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8257         if (!ret)
8258                 rdev->crit_proto_nlportid = info->snd_portid;
8259
8260         return ret;
8261 }
8262
8263 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8264                                       struct genl_info *info)
8265 {
8266         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8267         struct wireless_dev *wdev = info->user_ptr[1];
8268
8269         if (!rdev->ops->crit_proto_stop)
8270                 return -EOPNOTSUPP;
8271
8272         if (rdev->crit_proto_nlportid) {
8273                 rdev->crit_proto_nlportid = 0;
8274                 rdev_crit_proto_stop(rdev, wdev);
8275         }
8276         return 0;
8277 }
8278
8279 #define NL80211_FLAG_NEED_WIPHY         0x01
8280 #define NL80211_FLAG_NEED_NETDEV        0x02
8281 #define NL80211_FLAG_NEED_RTNL          0x04
8282 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8283 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8284                                          NL80211_FLAG_CHECK_NETDEV_UP)
8285 #define NL80211_FLAG_NEED_WDEV          0x10
8286 /* If a netdev is associated, it must be UP, P2P must be started */
8287 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8288                                          NL80211_FLAG_CHECK_NETDEV_UP)
8289
8290 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8291                             struct genl_info *info)
8292 {
8293         struct cfg80211_registered_device *rdev;
8294         struct wireless_dev *wdev;
8295         struct net_device *dev;
8296         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8297
8298         if (rtnl)
8299                 rtnl_lock();
8300
8301         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8302                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8303                 if (IS_ERR(rdev)) {
8304                         if (rtnl)
8305                                 rtnl_unlock();
8306                         return PTR_ERR(rdev);
8307                 }
8308                 info->user_ptr[0] = rdev;
8309         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8310                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8311                 ASSERT_RTNL();
8312
8313                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8314                                                   info->attrs);
8315                 if (IS_ERR(wdev)) {
8316                         if (rtnl)
8317                                 rtnl_unlock();
8318                         return PTR_ERR(wdev);
8319                 }
8320
8321                 dev = wdev->netdev;
8322                 rdev = wiphy_to_dev(wdev->wiphy);
8323
8324                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8325                         if (!dev) {
8326                                 if (rtnl)
8327                                         rtnl_unlock();
8328                                 return -EINVAL;
8329                         }
8330
8331                         info->user_ptr[1] = dev;
8332                 } else {
8333                         info->user_ptr[1] = wdev;
8334                 }
8335
8336                 if (dev) {
8337                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8338                             !netif_running(dev)) {
8339                                 if (rtnl)
8340                                         rtnl_unlock();
8341                                 return -ENETDOWN;
8342                         }
8343
8344                         dev_hold(dev);
8345                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8346                         if (!wdev->p2p_started) {
8347                                 if (rtnl)
8348                                         rtnl_unlock();
8349                                 return -ENETDOWN;
8350                         }
8351                 }
8352
8353                 info->user_ptr[0] = rdev;
8354         }
8355
8356         return 0;
8357 }
8358
8359 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8360                               struct genl_info *info)
8361 {
8362         if (info->user_ptr[1]) {
8363                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8364                         struct wireless_dev *wdev = info->user_ptr[1];
8365
8366                         if (wdev->netdev)
8367                                 dev_put(wdev->netdev);
8368                 } else {
8369                         dev_put(info->user_ptr[1]);
8370                 }
8371         }
8372         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8373                 rtnl_unlock();
8374 }
8375
8376 static struct genl_ops nl80211_ops[] = {
8377         {
8378                 .cmd = NL80211_CMD_GET_WIPHY,
8379                 .doit = nl80211_get_wiphy,
8380                 .dumpit = nl80211_dump_wiphy,
8381                 .policy = nl80211_policy,
8382                 /* can be retrieved by unprivileged users */
8383                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8384                                   NL80211_FLAG_NEED_RTNL,
8385         },
8386         {
8387                 .cmd = NL80211_CMD_SET_WIPHY,
8388                 .doit = nl80211_set_wiphy,
8389                 .policy = nl80211_policy,
8390                 .flags = GENL_ADMIN_PERM,
8391                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8392         },
8393         {
8394                 .cmd = NL80211_CMD_GET_INTERFACE,
8395                 .doit = nl80211_get_interface,
8396                 .dumpit = nl80211_dump_interface,
8397                 .policy = nl80211_policy,
8398                 /* can be retrieved by unprivileged users */
8399                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8400                                   NL80211_FLAG_NEED_RTNL,
8401         },
8402         {
8403                 .cmd = NL80211_CMD_SET_INTERFACE,
8404                 .doit = nl80211_set_interface,
8405                 .policy = nl80211_policy,
8406                 .flags = GENL_ADMIN_PERM,
8407                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8408                                   NL80211_FLAG_NEED_RTNL,
8409         },
8410         {
8411                 .cmd = NL80211_CMD_NEW_INTERFACE,
8412                 .doit = nl80211_new_interface,
8413                 .policy = nl80211_policy,
8414                 .flags = GENL_ADMIN_PERM,
8415                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8416                                   NL80211_FLAG_NEED_RTNL,
8417         },
8418         {
8419                 .cmd = NL80211_CMD_DEL_INTERFACE,
8420                 .doit = nl80211_del_interface,
8421                 .policy = nl80211_policy,
8422                 .flags = GENL_ADMIN_PERM,
8423                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8424                                   NL80211_FLAG_NEED_RTNL,
8425         },
8426         {
8427                 .cmd = NL80211_CMD_GET_KEY,
8428                 .doit = nl80211_get_key,
8429                 .policy = nl80211_policy,
8430                 .flags = GENL_ADMIN_PERM,
8431                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8432                                   NL80211_FLAG_NEED_RTNL,
8433         },
8434         {
8435                 .cmd = NL80211_CMD_SET_KEY,
8436                 .doit = nl80211_set_key,
8437                 .policy = nl80211_policy,
8438                 .flags = GENL_ADMIN_PERM,
8439                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8440                                   NL80211_FLAG_NEED_RTNL,
8441         },
8442         {
8443                 .cmd = NL80211_CMD_NEW_KEY,
8444                 .doit = nl80211_new_key,
8445                 .policy = nl80211_policy,
8446                 .flags = GENL_ADMIN_PERM,
8447                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8448                                   NL80211_FLAG_NEED_RTNL,
8449         },
8450         {
8451                 .cmd = NL80211_CMD_DEL_KEY,
8452                 .doit = nl80211_del_key,
8453                 .policy = nl80211_policy,
8454                 .flags = GENL_ADMIN_PERM,
8455                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8456                                   NL80211_FLAG_NEED_RTNL,
8457         },
8458         {
8459                 .cmd = NL80211_CMD_SET_BEACON,
8460                 .policy = nl80211_policy,
8461                 .flags = GENL_ADMIN_PERM,
8462                 .doit = nl80211_set_beacon,
8463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8464                                   NL80211_FLAG_NEED_RTNL,
8465         },
8466         {
8467                 .cmd = NL80211_CMD_START_AP,
8468                 .policy = nl80211_policy,
8469                 .flags = GENL_ADMIN_PERM,
8470                 .doit = nl80211_start_ap,
8471                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8472                                   NL80211_FLAG_NEED_RTNL,
8473         },
8474         {
8475                 .cmd = NL80211_CMD_STOP_AP,
8476                 .policy = nl80211_policy,
8477                 .flags = GENL_ADMIN_PERM,
8478                 .doit = nl80211_stop_ap,
8479                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8480                                   NL80211_FLAG_NEED_RTNL,
8481         },
8482         {
8483                 .cmd = NL80211_CMD_GET_STATION,
8484                 .doit = nl80211_get_station,
8485                 .dumpit = nl80211_dump_station,
8486                 .policy = nl80211_policy,
8487                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8488                                   NL80211_FLAG_NEED_RTNL,
8489         },
8490         {
8491                 .cmd = NL80211_CMD_SET_STATION,
8492                 .doit = nl80211_set_station,
8493                 .policy = nl80211_policy,
8494                 .flags = GENL_ADMIN_PERM,
8495                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8496                                   NL80211_FLAG_NEED_RTNL,
8497         },
8498         {
8499                 .cmd = NL80211_CMD_NEW_STATION,
8500                 .doit = nl80211_new_station,
8501                 .policy = nl80211_policy,
8502                 .flags = GENL_ADMIN_PERM,
8503                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8504                                   NL80211_FLAG_NEED_RTNL,
8505         },
8506         {
8507                 .cmd = NL80211_CMD_DEL_STATION,
8508                 .doit = nl80211_del_station,
8509                 .policy = nl80211_policy,
8510                 .flags = GENL_ADMIN_PERM,
8511                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8512                                   NL80211_FLAG_NEED_RTNL,
8513         },
8514         {
8515                 .cmd = NL80211_CMD_GET_MPATH,
8516                 .doit = nl80211_get_mpath,
8517                 .dumpit = nl80211_dump_mpath,
8518                 .policy = nl80211_policy,
8519                 .flags = GENL_ADMIN_PERM,
8520                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8521                                   NL80211_FLAG_NEED_RTNL,
8522         },
8523         {
8524                 .cmd = NL80211_CMD_SET_MPATH,
8525                 .doit = nl80211_set_mpath,
8526                 .policy = nl80211_policy,
8527                 .flags = GENL_ADMIN_PERM,
8528                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8529                                   NL80211_FLAG_NEED_RTNL,
8530         },
8531         {
8532                 .cmd = NL80211_CMD_NEW_MPATH,
8533                 .doit = nl80211_new_mpath,
8534                 .policy = nl80211_policy,
8535                 .flags = GENL_ADMIN_PERM,
8536                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8537                                   NL80211_FLAG_NEED_RTNL,
8538         },
8539         {
8540                 .cmd = NL80211_CMD_DEL_MPATH,
8541                 .doit = nl80211_del_mpath,
8542                 .policy = nl80211_policy,
8543                 .flags = GENL_ADMIN_PERM,
8544                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8545                                   NL80211_FLAG_NEED_RTNL,
8546         },
8547         {
8548                 .cmd = NL80211_CMD_SET_BSS,
8549                 .doit = nl80211_set_bss,
8550                 .policy = nl80211_policy,
8551                 .flags = GENL_ADMIN_PERM,
8552                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8553                                   NL80211_FLAG_NEED_RTNL,
8554         },
8555         {
8556                 .cmd = NL80211_CMD_GET_REG,
8557                 .doit = nl80211_get_reg,
8558                 .policy = nl80211_policy,
8559                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8560                 /* can be retrieved by unprivileged users */
8561         },
8562         {
8563                 .cmd = NL80211_CMD_SET_REG,
8564                 .doit = nl80211_set_reg,
8565                 .policy = nl80211_policy,
8566                 .flags = GENL_ADMIN_PERM,
8567                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8568         },
8569         {
8570                 .cmd = NL80211_CMD_REQ_SET_REG,
8571                 .doit = nl80211_req_set_reg,
8572                 .policy = nl80211_policy,
8573                 .flags = GENL_ADMIN_PERM,
8574         },
8575         {
8576                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8577                 .doit = nl80211_get_mesh_config,
8578                 .policy = nl80211_policy,
8579                 /* can be retrieved by unprivileged users */
8580                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8581                                   NL80211_FLAG_NEED_RTNL,
8582         },
8583         {
8584                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8585                 .doit = nl80211_update_mesh_config,
8586                 .policy = nl80211_policy,
8587                 .flags = GENL_ADMIN_PERM,
8588                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8589                                   NL80211_FLAG_NEED_RTNL,
8590         },
8591         {
8592                 .cmd = NL80211_CMD_TRIGGER_SCAN,
8593                 .doit = nl80211_trigger_scan,
8594                 .policy = nl80211_policy,
8595                 .flags = GENL_ADMIN_PERM,
8596                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8597                                   NL80211_FLAG_NEED_RTNL,
8598         },
8599         {
8600                 .cmd = NL80211_CMD_GET_SCAN,
8601                 .policy = nl80211_policy,
8602                 .dumpit = nl80211_dump_scan,
8603         },
8604         {
8605                 .cmd = NL80211_CMD_START_SCHED_SCAN,
8606                 .doit = nl80211_start_sched_scan,
8607                 .policy = nl80211_policy,
8608                 .flags = GENL_ADMIN_PERM,
8609                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8610                                   NL80211_FLAG_NEED_RTNL,
8611         },
8612         {
8613                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8614                 .doit = nl80211_stop_sched_scan,
8615                 .policy = nl80211_policy,
8616                 .flags = GENL_ADMIN_PERM,
8617                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8618                                   NL80211_FLAG_NEED_RTNL,
8619         },
8620         {
8621                 .cmd = NL80211_CMD_AUTHENTICATE,
8622                 .doit = nl80211_authenticate,
8623                 .policy = nl80211_policy,
8624                 .flags = GENL_ADMIN_PERM,
8625                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8626                                   NL80211_FLAG_NEED_RTNL,
8627         },
8628         {
8629                 .cmd = NL80211_CMD_ASSOCIATE,
8630                 .doit = nl80211_associate,
8631                 .policy = nl80211_policy,
8632                 .flags = GENL_ADMIN_PERM,
8633                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8634                                   NL80211_FLAG_NEED_RTNL,
8635         },
8636         {
8637                 .cmd = NL80211_CMD_DEAUTHENTICATE,
8638                 .doit = nl80211_deauthenticate,
8639                 .policy = nl80211_policy,
8640                 .flags = GENL_ADMIN_PERM,
8641                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8642                                   NL80211_FLAG_NEED_RTNL,
8643         },
8644         {
8645                 .cmd = NL80211_CMD_DISASSOCIATE,
8646                 .doit = nl80211_disassociate,
8647                 .policy = nl80211_policy,
8648                 .flags = GENL_ADMIN_PERM,
8649                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8650                                   NL80211_FLAG_NEED_RTNL,
8651         },
8652         {
8653                 .cmd = NL80211_CMD_JOIN_IBSS,
8654                 .doit = nl80211_join_ibss,
8655                 .policy = nl80211_policy,
8656                 .flags = GENL_ADMIN_PERM,
8657                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8658                                   NL80211_FLAG_NEED_RTNL,
8659         },
8660         {
8661                 .cmd = NL80211_CMD_LEAVE_IBSS,
8662                 .doit = nl80211_leave_ibss,
8663                 .policy = nl80211_policy,
8664                 .flags = GENL_ADMIN_PERM,
8665                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8666                                   NL80211_FLAG_NEED_RTNL,
8667         },
8668 #ifdef CONFIG_NL80211_TESTMODE
8669         {
8670                 .cmd = NL80211_CMD_TESTMODE,
8671                 .doit = nl80211_testmode_do,
8672                 .dumpit = nl80211_testmode_dump,
8673                 .policy = nl80211_policy,
8674                 .flags = GENL_ADMIN_PERM,
8675                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8676                                   NL80211_FLAG_NEED_RTNL,
8677         },
8678 #endif
8679         {
8680                 .cmd = NL80211_CMD_CONNECT,
8681                 .doit = nl80211_connect,
8682                 .policy = nl80211_policy,
8683                 .flags = GENL_ADMIN_PERM,
8684                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8685                                   NL80211_FLAG_NEED_RTNL,
8686         },
8687         {
8688                 .cmd = NL80211_CMD_DISCONNECT,
8689                 .doit = nl80211_disconnect,
8690                 .policy = nl80211_policy,
8691                 .flags = GENL_ADMIN_PERM,
8692                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8693                                   NL80211_FLAG_NEED_RTNL,
8694         },
8695         {
8696                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
8697                 .doit = nl80211_wiphy_netns,
8698                 .policy = nl80211_policy,
8699                 .flags = GENL_ADMIN_PERM,
8700                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8701                                   NL80211_FLAG_NEED_RTNL,
8702         },
8703         {
8704                 .cmd = NL80211_CMD_GET_SURVEY,
8705                 .policy = nl80211_policy,
8706                 .dumpit = nl80211_dump_survey,
8707         },
8708         {
8709                 .cmd = NL80211_CMD_SET_PMKSA,
8710                 .doit = nl80211_setdel_pmksa,
8711                 .policy = nl80211_policy,
8712                 .flags = GENL_ADMIN_PERM,
8713                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8714                                   NL80211_FLAG_NEED_RTNL,
8715         },
8716         {
8717                 .cmd = NL80211_CMD_DEL_PMKSA,
8718                 .doit = nl80211_setdel_pmksa,
8719                 .policy = nl80211_policy,
8720                 .flags = GENL_ADMIN_PERM,
8721                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8722                                   NL80211_FLAG_NEED_RTNL,
8723         },
8724         {
8725                 .cmd = NL80211_CMD_FLUSH_PMKSA,
8726                 .doit = nl80211_flush_pmksa,
8727                 .policy = nl80211_policy,
8728                 .flags = GENL_ADMIN_PERM,
8729                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8730                                   NL80211_FLAG_NEED_RTNL,
8731         },
8732         {
8733                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
8734                 .doit = nl80211_remain_on_channel,
8735                 .policy = nl80211_policy,
8736                 .flags = GENL_ADMIN_PERM,
8737                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8738                                   NL80211_FLAG_NEED_RTNL,
8739         },
8740         {
8741                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8742                 .doit = nl80211_cancel_remain_on_channel,
8743                 .policy = nl80211_policy,
8744                 .flags = GENL_ADMIN_PERM,
8745                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8746                                   NL80211_FLAG_NEED_RTNL,
8747         },
8748         {
8749                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
8750                 .doit = nl80211_set_tx_bitrate_mask,
8751                 .policy = nl80211_policy,
8752                 .flags = GENL_ADMIN_PERM,
8753                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8754                                   NL80211_FLAG_NEED_RTNL,
8755         },
8756         {
8757                 .cmd = NL80211_CMD_REGISTER_FRAME,
8758                 .doit = nl80211_register_mgmt,
8759                 .policy = nl80211_policy,
8760                 .flags = GENL_ADMIN_PERM,
8761                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8762                                   NL80211_FLAG_NEED_RTNL,
8763         },
8764         {
8765                 .cmd = NL80211_CMD_FRAME,
8766                 .doit = nl80211_tx_mgmt,
8767                 .policy = nl80211_policy,
8768                 .flags = GENL_ADMIN_PERM,
8769                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8770                                   NL80211_FLAG_NEED_RTNL,
8771         },
8772         {
8773                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
8774                 .doit = nl80211_tx_mgmt_cancel_wait,
8775                 .policy = nl80211_policy,
8776                 .flags = GENL_ADMIN_PERM,
8777                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8778                                   NL80211_FLAG_NEED_RTNL,
8779         },
8780         {
8781                 .cmd = NL80211_CMD_SET_POWER_SAVE,
8782                 .doit = nl80211_set_power_save,
8783                 .policy = nl80211_policy,
8784                 .flags = GENL_ADMIN_PERM,
8785                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8786                                   NL80211_FLAG_NEED_RTNL,
8787         },
8788         {
8789                 .cmd = NL80211_CMD_GET_POWER_SAVE,
8790                 .doit = nl80211_get_power_save,
8791                 .policy = nl80211_policy,
8792                 /* can be retrieved by unprivileged users */
8793                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8794                                   NL80211_FLAG_NEED_RTNL,
8795         },
8796         {
8797                 .cmd = NL80211_CMD_SET_CQM,
8798                 .doit = nl80211_set_cqm,
8799                 .policy = nl80211_policy,
8800                 .flags = GENL_ADMIN_PERM,
8801                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8802                                   NL80211_FLAG_NEED_RTNL,
8803         },
8804         {
8805                 .cmd = NL80211_CMD_SET_CHANNEL,
8806                 .doit = nl80211_set_channel,
8807                 .policy = nl80211_policy,
8808                 .flags = GENL_ADMIN_PERM,
8809                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8810                                   NL80211_FLAG_NEED_RTNL,
8811         },
8812         {
8813                 .cmd = NL80211_CMD_SET_WDS_PEER,
8814                 .doit = nl80211_set_wds_peer,
8815                 .policy = nl80211_policy,
8816                 .flags = GENL_ADMIN_PERM,
8817                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8818                                   NL80211_FLAG_NEED_RTNL,
8819         },
8820         {
8821                 .cmd = NL80211_CMD_JOIN_MESH,
8822                 .doit = nl80211_join_mesh,
8823                 .policy = nl80211_policy,
8824                 .flags = GENL_ADMIN_PERM,
8825                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8826                                   NL80211_FLAG_NEED_RTNL,
8827         },
8828         {
8829                 .cmd = NL80211_CMD_LEAVE_MESH,
8830                 .doit = nl80211_leave_mesh,
8831                 .policy = nl80211_policy,
8832                 .flags = GENL_ADMIN_PERM,
8833                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8834                                   NL80211_FLAG_NEED_RTNL,
8835         },
8836 #ifdef CONFIG_PM
8837         {
8838                 .cmd = NL80211_CMD_GET_WOWLAN,
8839                 .doit = nl80211_get_wowlan,
8840                 .policy = nl80211_policy,
8841                 /* can be retrieved by unprivileged users */
8842                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8843                                   NL80211_FLAG_NEED_RTNL,
8844         },
8845         {
8846                 .cmd = NL80211_CMD_SET_WOWLAN,
8847                 .doit = nl80211_set_wowlan,
8848                 .policy = nl80211_policy,
8849                 .flags = GENL_ADMIN_PERM,
8850                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8851                                   NL80211_FLAG_NEED_RTNL,
8852         },
8853 #endif
8854         {
8855                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
8856                 .doit = nl80211_set_rekey_data,
8857                 .policy = nl80211_policy,
8858                 .flags = GENL_ADMIN_PERM,
8859                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8860                                   NL80211_FLAG_NEED_RTNL,
8861         },
8862         {
8863                 .cmd = NL80211_CMD_TDLS_MGMT,
8864                 .doit = nl80211_tdls_mgmt,
8865                 .policy = nl80211_policy,
8866                 .flags = GENL_ADMIN_PERM,
8867                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8868                                   NL80211_FLAG_NEED_RTNL,
8869         },
8870         {
8871                 .cmd = NL80211_CMD_TDLS_OPER,
8872                 .doit = nl80211_tdls_oper,
8873                 .policy = nl80211_policy,
8874                 .flags = GENL_ADMIN_PERM,
8875                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8876                                   NL80211_FLAG_NEED_RTNL,
8877         },
8878         {
8879                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
8880                 .doit = nl80211_register_unexpected_frame,
8881                 .policy = nl80211_policy,
8882                 .flags = GENL_ADMIN_PERM,
8883                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8884                                   NL80211_FLAG_NEED_RTNL,
8885         },
8886         {
8887                 .cmd = NL80211_CMD_PROBE_CLIENT,
8888                 .doit = nl80211_probe_client,
8889                 .policy = nl80211_policy,
8890                 .flags = GENL_ADMIN_PERM,
8891                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8892                                   NL80211_FLAG_NEED_RTNL,
8893         },
8894         {
8895                 .cmd = NL80211_CMD_REGISTER_BEACONS,
8896                 .doit = nl80211_register_beacons,
8897                 .policy = nl80211_policy,
8898                 .flags = GENL_ADMIN_PERM,
8899                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8900                                   NL80211_FLAG_NEED_RTNL,
8901         },
8902         {
8903                 .cmd = NL80211_CMD_SET_NOACK_MAP,
8904                 .doit = nl80211_set_noack_map,
8905                 .policy = nl80211_policy,
8906                 .flags = GENL_ADMIN_PERM,
8907                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8908                                   NL80211_FLAG_NEED_RTNL,
8909         },
8910         {
8911                 .cmd = NL80211_CMD_START_P2P_DEVICE,
8912                 .doit = nl80211_start_p2p_device,
8913                 .policy = nl80211_policy,
8914                 .flags = GENL_ADMIN_PERM,
8915                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8916                                   NL80211_FLAG_NEED_RTNL,
8917         },
8918         {
8919                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
8920                 .doit = nl80211_stop_p2p_device,
8921                 .policy = nl80211_policy,
8922                 .flags = GENL_ADMIN_PERM,
8923                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8924                                   NL80211_FLAG_NEED_RTNL,
8925         },
8926         {
8927                 .cmd = NL80211_CMD_SET_MCAST_RATE,
8928                 .doit = nl80211_set_mcast_rate,
8929                 .policy = nl80211_policy,
8930                 .flags = GENL_ADMIN_PERM,
8931                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8932                                   NL80211_FLAG_NEED_RTNL,
8933         },
8934         {
8935                 .cmd = NL80211_CMD_SET_MAC_ACL,
8936                 .doit = nl80211_set_mac_acl,
8937                 .policy = nl80211_policy,
8938                 .flags = GENL_ADMIN_PERM,
8939                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8940                                   NL80211_FLAG_NEED_RTNL,
8941         },
8942         {
8943                 .cmd = NL80211_CMD_RADAR_DETECT,
8944                 .doit = nl80211_start_radar_detection,
8945                 .policy = nl80211_policy,
8946                 .flags = GENL_ADMIN_PERM,
8947                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8948                                   NL80211_FLAG_NEED_RTNL,
8949         },
8950         {
8951                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
8952                 .doit = nl80211_get_protocol_features,
8953                 .policy = nl80211_policy,
8954         },
8955         {
8956                 .cmd = NL80211_CMD_UPDATE_FT_IES,
8957                 .doit = nl80211_update_ft_ies,
8958                 .policy = nl80211_policy,
8959                 .flags = GENL_ADMIN_PERM,
8960                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8961                                   NL80211_FLAG_NEED_RTNL,
8962         },
8963         {
8964                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
8965                 .doit = nl80211_crit_protocol_start,
8966                 .policy = nl80211_policy,
8967                 .flags = GENL_ADMIN_PERM,
8968                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8969                                   NL80211_FLAG_NEED_RTNL,
8970         },
8971         {
8972                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
8973                 .doit = nl80211_crit_protocol_stop,
8974                 .policy = nl80211_policy,
8975                 .flags = GENL_ADMIN_PERM,
8976                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8977                                   NL80211_FLAG_NEED_RTNL,
8978         }
8979 };
8980
8981 static struct genl_multicast_group nl80211_mlme_mcgrp = {
8982         .name = "mlme",
8983 };
8984
8985 /* multicast groups */
8986 static struct genl_multicast_group nl80211_config_mcgrp = {
8987         .name = "config",
8988 };
8989 static struct genl_multicast_group nl80211_scan_mcgrp = {
8990         .name = "scan",
8991 };
8992 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
8993         .name = "regulatory",
8994 };
8995
8996 /* notification functions */
8997
8998 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
8999 {
9000         struct sk_buff *msg;
9001
9002         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9003         if (!msg)
9004                 return;
9005
9006         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0,
9007                                false, NULL, NULL, NULL) < 0) {
9008                 nlmsg_free(msg);
9009                 return;
9010         }
9011
9012         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9013                                 nl80211_config_mcgrp.id, GFP_KERNEL);
9014 }
9015
9016 static int nl80211_add_scan_req(struct sk_buff *msg,
9017                                 struct cfg80211_registered_device *rdev)
9018 {
9019         struct cfg80211_scan_request *req = rdev->scan_req;
9020         struct nlattr *nest;
9021         int i;
9022
9023         if (WARN_ON(!req))
9024                 return 0;
9025
9026         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9027         if (!nest)
9028                 goto nla_put_failure;
9029         for (i = 0; i < req->n_ssids; i++) {
9030                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9031                         goto nla_put_failure;
9032         }
9033         nla_nest_end(msg, nest);
9034
9035         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9036         if (!nest)
9037                 goto nla_put_failure;
9038         for (i = 0; i < req->n_channels; i++) {
9039                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9040                         goto nla_put_failure;
9041         }
9042         nla_nest_end(msg, nest);
9043
9044         if (req->ie &&
9045             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9046                 goto nla_put_failure;
9047
9048         if (req->flags)
9049                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9050
9051         return 0;
9052  nla_put_failure:
9053         return -ENOBUFS;
9054 }
9055
9056 static int nl80211_send_scan_msg(struct sk_buff *msg,
9057                                  struct cfg80211_registered_device *rdev,
9058                                  struct wireless_dev *wdev,
9059                                  u32 portid, u32 seq, int flags,
9060                                  u32 cmd)
9061 {
9062         void *hdr;
9063
9064         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9065         if (!hdr)
9066                 return -1;
9067
9068         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9069             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9070                                          wdev->netdev->ifindex)) ||
9071             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9072                 goto nla_put_failure;
9073
9074         /* ignore errors and send incomplete event anyway */
9075         nl80211_add_scan_req(msg, rdev);
9076
9077         return genlmsg_end(msg, hdr);
9078
9079  nla_put_failure:
9080         genlmsg_cancel(msg, hdr);
9081         return -EMSGSIZE;
9082 }
9083
9084 static int
9085 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9086                             struct cfg80211_registered_device *rdev,
9087                             struct net_device *netdev,
9088                             u32 portid, u32 seq, int flags, u32 cmd)
9089 {
9090         void *hdr;
9091
9092         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9093         if (!hdr)
9094                 return -1;
9095
9096         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9097             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9098                 goto nla_put_failure;
9099
9100         return genlmsg_end(msg, hdr);
9101
9102  nla_put_failure:
9103         genlmsg_cancel(msg, hdr);
9104         return -EMSGSIZE;
9105 }
9106
9107 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9108                              struct wireless_dev *wdev)
9109 {
9110         struct sk_buff *msg;
9111
9112         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9113         if (!msg)
9114                 return;
9115
9116         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9117                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9118                 nlmsg_free(msg);
9119                 return;
9120         }
9121
9122         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9123                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9124 }
9125
9126 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9127                             struct wireless_dev *wdev)
9128 {
9129         struct sk_buff *msg;
9130
9131         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9132         if (!msg)
9133                 return;
9134
9135         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9136                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9137                 nlmsg_free(msg);
9138                 return;
9139         }
9140
9141         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9142                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9143 }
9144
9145 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9146                                struct wireless_dev *wdev)
9147 {
9148         struct sk_buff *msg;
9149
9150         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9151         if (!msg)
9152                 return;
9153
9154         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9155                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9156                 nlmsg_free(msg);
9157                 return;
9158         }
9159
9160         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9161                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9162 }
9163
9164 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9165                                      struct net_device *netdev)
9166 {
9167         struct sk_buff *msg;
9168
9169         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9170         if (!msg)
9171                 return;
9172
9173         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9174                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9175                 nlmsg_free(msg);
9176                 return;
9177         }
9178
9179         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9180                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9181 }
9182
9183 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9184                              struct net_device *netdev, u32 cmd)
9185 {
9186         struct sk_buff *msg;
9187
9188         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9189         if (!msg)
9190                 return;
9191
9192         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9193                 nlmsg_free(msg);
9194                 return;
9195         }
9196
9197         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9198                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9199 }
9200
9201 /*
9202  * This can happen on global regulatory changes or device specific settings
9203  * based on custom world regulatory domains.
9204  */
9205 void nl80211_send_reg_change_event(struct regulatory_request *request)
9206 {
9207         struct sk_buff *msg;
9208         void *hdr;
9209
9210         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9211         if (!msg)
9212                 return;
9213
9214         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9215         if (!hdr) {
9216                 nlmsg_free(msg);
9217                 return;
9218         }
9219
9220         /* Userspace can always count this one always being set */
9221         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9222                 goto nla_put_failure;
9223
9224         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9225                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9226                                NL80211_REGDOM_TYPE_WORLD))
9227                         goto nla_put_failure;
9228         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9229                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9230                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9231                         goto nla_put_failure;
9232         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9233                    request->intersect) {
9234                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9235                                NL80211_REGDOM_TYPE_INTERSECTION))
9236                         goto nla_put_failure;
9237         } else {
9238                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9239                                NL80211_REGDOM_TYPE_COUNTRY) ||
9240                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9241                                    request->alpha2))
9242                         goto nla_put_failure;
9243         }
9244
9245         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9246             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9247                 goto nla_put_failure;
9248
9249         genlmsg_end(msg, hdr);
9250
9251         rcu_read_lock();
9252         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9253                                 GFP_ATOMIC);
9254         rcu_read_unlock();
9255
9256         return;
9257
9258 nla_put_failure:
9259         genlmsg_cancel(msg, hdr);
9260         nlmsg_free(msg);
9261 }
9262
9263 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9264                                     struct net_device *netdev,
9265                                     const u8 *buf, size_t len,
9266                                     enum nl80211_commands cmd, gfp_t gfp)
9267 {
9268         struct sk_buff *msg;
9269         void *hdr;
9270
9271         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9272         if (!msg)
9273                 return;
9274
9275         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9276         if (!hdr) {
9277                 nlmsg_free(msg);
9278                 return;
9279         }
9280
9281         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9282             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9283             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9284                 goto nla_put_failure;
9285
9286         genlmsg_end(msg, hdr);
9287
9288         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9289                                 nl80211_mlme_mcgrp.id, gfp);
9290         return;
9291
9292  nla_put_failure:
9293         genlmsg_cancel(msg, hdr);
9294         nlmsg_free(msg);
9295 }
9296
9297 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9298                           struct net_device *netdev, const u8 *buf,
9299                           size_t len, gfp_t gfp)
9300 {
9301         nl80211_send_mlme_event(rdev, netdev, buf, len,
9302                                 NL80211_CMD_AUTHENTICATE, gfp);
9303 }
9304
9305 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9306                            struct net_device *netdev, const u8 *buf,
9307                            size_t len, gfp_t gfp)
9308 {
9309         nl80211_send_mlme_event(rdev, netdev, buf, len,
9310                                 NL80211_CMD_ASSOCIATE, gfp);
9311 }
9312
9313 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9314                          struct net_device *netdev, const u8 *buf,
9315                          size_t len, gfp_t gfp)
9316 {
9317         nl80211_send_mlme_event(rdev, netdev, buf, len,
9318                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9319 }
9320
9321 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9322                            struct net_device *netdev, const u8 *buf,
9323                            size_t len, gfp_t gfp)
9324 {
9325         nl80211_send_mlme_event(rdev, netdev, buf, len,
9326                                 NL80211_CMD_DISASSOCIATE, gfp);
9327 }
9328
9329 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf,
9330                                  size_t len)
9331 {
9332         struct wireless_dev *wdev = dev->ieee80211_ptr;
9333         struct wiphy *wiphy = wdev->wiphy;
9334         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9335
9336         trace_cfg80211_send_unprot_deauth(dev);
9337         nl80211_send_mlme_event(rdev, dev, buf, len,
9338                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, GFP_ATOMIC);
9339 }
9340 EXPORT_SYMBOL(cfg80211_send_unprot_deauth);
9341
9342 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf,
9343                                    size_t len)
9344 {
9345         struct wireless_dev *wdev = dev->ieee80211_ptr;
9346         struct wiphy *wiphy = wdev->wiphy;
9347         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9348
9349         trace_cfg80211_send_unprot_disassoc(dev);
9350         nl80211_send_mlme_event(rdev, dev, buf, len,
9351                                 NL80211_CMD_UNPROT_DISASSOCIATE, GFP_ATOMIC);
9352 }
9353 EXPORT_SYMBOL(cfg80211_send_unprot_disassoc);
9354
9355 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9356                                       struct net_device *netdev, int cmd,
9357                                       const u8 *addr, gfp_t gfp)
9358 {
9359         struct sk_buff *msg;
9360         void *hdr;
9361
9362         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9363         if (!msg)
9364                 return;
9365
9366         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9367         if (!hdr) {
9368                 nlmsg_free(msg);
9369                 return;
9370         }
9371
9372         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9373             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9374             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9375             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9376                 goto nla_put_failure;
9377
9378         genlmsg_end(msg, hdr);
9379
9380         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9381                                 nl80211_mlme_mcgrp.id, gfp);
9382         return;
9383
9384  nla_put_failure:
9385         genlmsg_cancel(msg, hdr);
9386         nlmsg_free(msg);
9387 }
9388
9389 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9390                                struct net_device *netdev, const u8 *addr,
9391                                gfp_t gfp)
9392 {
9393         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9394                                   addr, gfp);
9395 }
9396
9397 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9398                                 struct net_device *netdev, const u8 *addr,
9399                                 gfp_t gfp)
9400 {
9401         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9402                                   addr, gfp);
9403 }
9404
9405 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9406                                  struct net_device *netdev, const u8 *bssid,
9407                                  const u8 *req_ie, size_t req_ie_len,
9408                                  const u8 *resp_ie, size_t resp_ie_len,
9409                                  u16 status, gfp_t gfp)
9410 {
9411         struct sk_buff *msg;
9412         void *hdr;
9413
9414         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9415         if (!msg)
9416                 return;
9417
9418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9419         if (!hdr) {
9420                 nlmsg_free(msg);
9421                 return;
9422         }
9423
9424         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9425             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9426             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9427             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9428             (req_ie &&
9429              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9430             (resp_ie &&
9431              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9432                 goto nla_put_failure;
9433
9434         genlmsg_end(msg, hdr);
9435
9436         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9437                                 nl80211_mlme_mcgrp.id, gfp);
9438         return;
9439
9440  nla_put_failure:
9441         genlmsg_cancel(msg, hdr);
9442         nlmsg_free(msg);
9443
9444 }
9445
9446 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9447                          struct net_device *netdev, const u8 *bssid,
9448                          const u8 *req_ie, size_t req_ie_len,
9449                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9450 {
9451         struct sk_buff *msg;
9452         void *hdr;
9453
9454         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9455         if (!msg)
9456                 return;
9457
9458         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9459         if (!hdr) {
9460                 nlmsg_free(msg);
9461                 return;
9462         }
9463
9464         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9465             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9466             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9467             (req_ie &&
9468              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9469             (resp_ie &&
9470              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9471                 goto nla_put_failure;
9472
9473         genlmsg_end(msg, hdr);
9474
9475         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9476                                 nl80211_mlme_mcgrp.id, gfp);
9477         return;
9478
9479  nla_put_failure:
9480         genlmsg_cancel(msg, hdr);
9481         nlmsg_free(msg);
9482
9483 }
9484
9485 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9486                                struct net_device *netdev, u16 reason,
9487                                const u8 *ie, size_t ie_len, bool from_ap)
9488 {
9489         struct sk_buff *msg;
9490         void *hdr;
9491
9492         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9493         if (!msg)
9494                 return;
9495
9496         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9497         if (!hdr) {
9498                 nlmsg_free(msg);
9499                 return;
9500         }
9501
9502         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9503             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9504             (from_ap && reason &&
9505              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9506             (from_ap &&
9507              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9508             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9509                 goto nla_put_failure;
9510
9511         genlmsg_end(msg, hdr);
9512
9513         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9514                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9515         return;
9516
9517  nla_put_failure:
9518         genlmsg_cancel(msg, hdr);
9519         nlmsg_free(msg);
9520
9521 }
9522
9523 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9524                              struct net_device *netdev, const u8 *bssid,
9525                              gfp_t gfp)
9526 {
9527         struct sk_buff *msg;
9528         void *hdr;
9529
9530         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9531         if (!msg)
9532                 return;
9533
9534         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9535         if (!hdr) {
9536                 nlmsg_free(msg);
9537                 return;
9538         }
9539
9540         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9541             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9542             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9543                 goto nla_put_failure;
9544
9545         genlmsg_end(msg, hdr);
9546
9547         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9548                                 nl80211_mlme_mcgrp.id, gfp);
9549         return;
9550
9551  nla_put_failure:
9552         genlmsg_cancel(msg, hdr);
9553         nlmsg_free(msg);
9554 }
9555
9556 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9557                                         const u8* ie, u8 ie_len, gfp_t gfp)
9558 {
9559         struct wireless_dev *wdev = dev->ieee80211_ptr;
9560         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9561         struct sk_buff *msg;
9562         void *hdr;
9563
9564         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9565                 return;
9566
9567         trace_cfg80211_notify_new_peer_candidate(dev, addr);
9568
9569         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9570         if (!msg)
9571                 return;
9572
9573         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9574         if (!hdr) {
9575                 nlmsg_free(msg);
9576                 return;
9577         }
9578
9579         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9580             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9581             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9582             (ie_len && ie &&
9583              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9584                 goto nla_put_failure;
9585
9586         genlmsg_end(msg, hdr);
9587
9588         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9589                                 nl80211_mlme_mcgrp.id, gfp);
9590         return;
9591
9592  nla_put_failure:
9593         genlmsg_cancel(msg, hdr);
9594         nlmsg_free(msg);
9595 }
9596 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9597
9598 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9599                                  struct net_device *netdev, const u8 *addr,
9600                                  enum nl80211_key_type key_type, int key_id,
9601                                  const u8 *tsc, gfp_t gfp)
9602 {
9603         struct sk_buff *msg;
9604         void *hdr;
9605
9606         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9607         if (!msg)
9608                 return;
9609
9610         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9611         if (!hdr) {
9612                 nlmsg_free(msg);
9613                 return;
9614         }
9615
9616         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9617             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9618             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
9619             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
9620             (key_id != -1 &&
9621              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
9622             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
9623                 goto nla_put_failure;
9624
9625         genlmsg_end(msg, hdr);
9626
9627         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9628                                 nl80211_mlme_mcgrp.id, gfp);
9629         return;
9630
9631  nla_put_failure:
9632         genlmsg_cancel(msg, hdr);
9633         nlmsg_free(msg);
9634 }
9635
9636 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
9637                                     struct ieee80211_channel *channel_before,
9638                                     struct ieee80211_channel *channel_after)
9639 {
9640         struct sk_buff *msg;
9641         void *hdr;
9642         struct nlattr *nl_freq;
9643
9644         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
9645         if (!msg)
9646                 return;
9647
9648         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
9649         if (!hdr) {
9650                 nlmsg_free(msg);
9651                 return;
9652         }
9653
9654         /*
9655          * Since we are applying the beacon hint to a wiphy we know its
9656          * wiphy_idx is valid
9657          */
9658         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
9659                 goto nla_put_failure;
9660
9661         /* Before */
9662         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
9663         if (!nl_freq)
9664                 goto nla_put_failure;
9665         if (nl80211_msg_put_channel(msg, channel_before, false))
9666                 goto nla_put_failure;
9667         nla_nest_end(msg, nl_freq);
9668
9669         /* After */
9670         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
9671         if (!nl_freq)
9672                 goto nla_put_failure;
9673         if (nl80211_msg_put_channel(msg, channel_after, false))
9674                 goto nla_put_failure;
9675         nla_nest_end(msg, nl_freq);
9676
9677         genlmsg_end(msg, hdr);
9678
9679         rcu_read_lock();
9680         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9681                                 GFP_ATOMIC);
9682         rcu_read_unlock();
9683
9684         return;
9685
9686 nla_put_failure:
9687         genlmsg_cancel(msg, hdr);
9688         nlmsg_free(msg);
9689 }
9690
9691 static void nl80211_send_remain_on_chan_event(
9692         int cmd, struct cfg80211_registered_device *rdev,
9693         struct wireless_dev *wdev, u64 cookie,
9694         struct ieee80211_channel *chan,
9695         unsigned int duration, gfp_t gfp)
9696 {
9697         struct sk_buff *msg;
9698         void *hdr;
9699
9700         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9701         if (!msg)
9702                 return;
9703
9704         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9705         if (!hdr) {
9706                 nlmsg_free(msg);
9707                 return;
9708         }
9709
9710         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9711             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9712                                          wdev->netdev->ifindex)) ||
9713             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9714             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
9715             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
9716                         NL80211_CHAN_NO_HT) ||
9717             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9718                 goto nla_put_failure;
9719
9720         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
9721             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
9722                 goto nla_put_failure;
9723
9724         genlmsg_end(msg, hdr);
9725
9726         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9727                                 nl80211_mlme_mcgrp.id, gfp);
9728         return;
9729
9730  nla_put_failure:
9731         genlmsg_cancel(msg, hdr);
9732         nlmsg_free(msg);
9733 }
9734
9735 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
9736                                struct ieee80211_channel *chan,
9737                                unsigned int duration, gfp_t gfp)
9738 {
9739         struct wiphy *wiphy = wdev->wiphy;
9740         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9741
9742         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
9743         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
9744                                           rdev, wdev, cookie, chan,
9745                                           duration, gfp);
9746 }
9747 EXPORT_SYMBOL(cfg80211_ready_on_channel);
9748
9749 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
9750                                         struct ieee80211_channel *chan,
9751                                         gfp_t gfp)
9752 {
9753         struct wiphy *wiphy = wdev->wiphy;
9754         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9755
9756         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
9757         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9758                                           rdev, wdev, cookie, chan, 0, gfp);
9759 }
9760 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
9761
9762 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
9763                       struct station_info *sinfo, gfp_t gfp)
9764 {
9765         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9766         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9767         struct sk_buff *msg;
9768
9769         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
9770
9771         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9772         if (!msg)
9773                 return;
9774
9775         if (nl80211_send_station(msg, 0, 0, 0,
9776                                  rdev, dev, mac_addr, sinfo) < 0) {
9777                 nlmsg_free(msg);
9778                 return;
9779         }
9780
9781         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9782                                 nl80211_mlme_mcgrp.id, gfp);
9783 }
9784 EXPORT_SYMBOL(cfg80211_new_sta);
9785
9786 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
9787 {
9788         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9789         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9790         struct sk_buff *msg;
9791         void *hdr;
9792
9793         trace_cfg80211_del_sta(dev, mac_addr);
9794
9795         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9796         if (!msg)
9797                 return;
9798
9799         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
9800         if (!hdr) {
9801                 nlmsg_free(msg);
9802                 return;
9803         }
9804
9805         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9806             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
9807                 goto nla_put_failure;
9808
9809         genlmsg_end(msg, hdr);
9810
9811         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9812                                 nl80211_mlme_mcgrp.id, gfp);
9813         return;
9814
9815  nla_put_failure:
9816         genlmsg_cancel(msg, hdr);
9817         nlmsg_free(msg);
9818 }
9819 EXPORT_SYMBOL(cfg80211_del_sta);
9820
9821 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
9822                           enum nl80211_connect_failed_reason reason,
9823                           gfp_t gfp)
9824 {
9825         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
9826         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9827         struct sk_buff *msg;
9828         void *hdr;
9829
9830         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
9831         if (!msg)
9832                 return;
9833
9834         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
9835         if (!hdr) {
9836                 nlmsg_free(msg);
9837                 return;
9838         }
9839
9840         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9841             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
9842             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
9843                 goto nla_put_failure;
9844
9845         genlmsg_end(msg, hdr);
9846
9847         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9848                                 nl80211_mlme_mcgrp.id, gfp);
9849         return;
9850
9851  nla_put_failure:
9852         genlmsg_cancel(msg, hdr);
9853         nlmsg_free(msg);
9854 }
9855 EXPORT_SYMBOL(cfg80211_conn_failed);
9856
9857 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
9858                                        const u8 *addr, gfp_t gfp)
9859 {
9860         struct wireless_dev *wdev = dev->ieee80211_ptr;
9861         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9862         struct sk_buff *msg;
9863         void *hdr;
9864         int err;
9865         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
9866
9867         if (!nlportid)
9868                 return false;
9869
9870         msg = nlmsg_new(100, gfp);
9871         if (!msg)
9872                 return true;
9873
9874         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9875         if (!hdr) {
9876                 nlmsg_free(msg);
9877                 return true;
9878         }
9879
9880         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9881             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9882             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9883                 goto nla_put_failure;
9884
9885         err = genlmsg_end(msg, hdr);
9886         if (err < 0) {
9887                 nlmsg_free(msg);
9888                 return true;
9889         }
9890
9891         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9892         return true;
9893
9894  nla_put_failure:
9895         genlmsg_cancel(msg, hdr);
9896         nlmsg_free(msg);
9897         return true;
9898 }
9899
9900 bool cfg80211_rx_spurious_frame(struct net_device *dev,
9901                                 const u8 *addr, gfp_t gfp)
9902 {
9903         struct wireless_dev *wdev = dev->ieee80211_ptr;
9904         bool ret;
9905
9906         trace_cfg80211_rx_spurious_frame(dev, addr);
9907
9908         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9909                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
9910                 trace_cfg80211_return_bool(false);
9911                 return false;
9912         }
9913         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
9914                                          addr, gfp);
9915         trace_cfg80211_return_bool(ret);
9916         return ret;
9917 }
9918 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
9919
9920 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
9921                                         const u8 *addr, gfp_t gfp)
9922 {
9923         struct wireless_dev *wdev = dev->ieee80211_ptr;
9924         bool ret;
9925
9926         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
9927
9928         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
9929                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
9930                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
9931                 trace_cfg80211_return_bool(false);
9932                 return false;
9933         }
9934         ret = __nl80211_unexpected_frame(dev,
9935                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
9936                                          addr, gfp);
9937         trace_cfg80211_return_bool(ret);
9938         return ret;
9939 }
9940 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
9941
9942 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
9943                       struct wireless_dev *wdev, u32 nlportid,
9944                       int freq, int sig_dbm,
9945                       const u8 *buf, size_t len, gfp_t gfp)
9946 {
9947         struct net_device *netdev = wdev->netdev;
9948         struct sk_buff *msg;
9949         void *hdr;
9950
9951         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9952         if (!msg)
9953                 return -ENOMEM;
9954
9955         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
9956         if (!hdr) {
9957                 nlmsg_free(msg);
9958                 return -ENOMEM;
9959         }
9960
9961         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9962             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9963                                         netdev->ifindex)) ||
9964             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
9965             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
9966             (sig_dbm &&
9967              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
9968             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9969                 goto nla_put_failure;
9970
9971         genlmsg_end(msg, hdr);
9972
9973         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
9974
9975  nla_put_failure:
9976         genlmsg_cancel(msg, hdr);
9977         nlmsg_free(msg);
9978         return -ENOBUFS;
9979 }
9980
9981 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
9982                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
9983 {
9984         struct wiphy *wiphy = wdev->wiphy;
9985         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9986         struct net_device *netdev = wdev->netdev;
9987         struct sk_buff *msg;
9988         void *hdr;
9989
9990         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
9991
9992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9993         if (!msg)
9994                 return;
9995
9996         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
9997         if (!hdr) {
9998                 nlmsg_free(msg);
9999                 return;
10000         }
10001
10002         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10003             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10004                                    netdev->ifindex)) ||
10005             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10006             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10007             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10008             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10009                 goto nla_put_failure;
10010
10011         genlmsg_end(msg, hdr);
10012
10013         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
10014         return;
10015
10016  nla_put_failure:
10017         genlmsg_cancel(msg, hdr);
10018         nlmsg_free(msg);
10019 }
10020 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10021
10022 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10023                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10024                               gfp_t gfp)
10025 {
10026         struct wireless_dev *wdev = dev->ieee80211_ptr;
10027         struct wiphy *wiphy = wdev->wiphy;
10028         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10029         struct sk_buff *msg;
10030         struct nlattr *pinfoattr;
10031         void *hdr;
10032
10033         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10034
10035         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10036         if (!msg)
10037                 return;
10038
10039         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10040         if (!hdr) {
10041                 nlmsg_free(msg);
10042                 return;
10043         }
10044
10045         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10046             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10047                 goto nla_put_failure;
10048
10049         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10050         if (!pinfoattr)
10051                 goto nla_put_failure;
10052
10053         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10054                         rssi_event))
10055                 goto nla_put_failure;
10056
10057         nla_nest_end(msg, pinfoattr);
10058
10059         genlmsg_end(msg, hdr);
10060
10061         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10062                                 nl80211_mlme_mcgrp.id, gfp);
10063         return;
10064
10065  nla_put_failure:
10066         genlmsg_cancel(msg, hdr);
10067         nlmsg_free(msg);
10068 }
10069 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10070
10071 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10072                                      struct net_device *netdev, const u8 *bssid,
10073                                      const u8 *replay_ctr, gfp_t gfp)
10074 {
10075         struct sk_buff *msg;
10076         struct nlattr *rekey_attr;
10077         void *hdr;
10078
10079         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10080         if (!msg)
10081                 return;
10082
10083         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10084         if (!hdr) {
10085                 nlmsg_free(msg);
10086                 return;
10087         }
10088
10089         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10090             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10091             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10092                 goto nla_put_failure;
10093
10094         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10095         if (!rekey_attr)
10096                 goto nla_put_failure;
10097
10098         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10099                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10100                 goto nla_put_failure;
10101
10102         nla_nest_end(msg, rekey_attr);
10103
10104         genlmsg_end(msg, hdr);
10105
10106         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10107                                 nl80211_mlme_mcgrp.id, gfp);
10108         return;
10109
10110  nla_put_failure:
10111         genlmsg_cancel(msg, hdr);
10112         nlmsg_free(msg);
10113 }
10114
10115 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10116                                const u8 *replay_ctr, gfp_t gfp)
10117 {
10118         struct wireless_dev *wdev = dev->ieee80211_ptr;
10119         struct wiphy *wiphy = wdev->wiphy;
10120         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10121
10122         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10123         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10124 }
10125 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10126
10127 static void
10128 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10129                                struct net_device *netdev, int index,
10130                                const u8 *bssid, bool preauth, gfp_t gfp)
10131 {
10132         struct sk_buff *msg;
10133         struct nlattr *attr;
10134         void *hdr;
10135
10136         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10137         if (!msg)
10138                 return;
10139
10140         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10141         if (!hdr) {
10142                 nlmsg_free(msg);
10143                 return;
10144         }
10145
10146         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10147             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10148                 goto nla_put_failure;
10149
10150         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10151         if (!attr)
10152                 goto nla_put_failure;
10153
10154         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10155             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10156             (preauth &&
10157              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10158                 goto nla_put_failure;
10159
10160         nla_nest_end(msg, attr);
10161
10162         genlmsg_end(msg, hdr);
10163
10164         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10165                                 nl80211_mlme_mcgrp.id, gfp);
10166         return;
10167
10168  nla_put_failure:
10169         genlmsg_cancel(msg, hdr);
10170         nlmsg_free(msg);
10171 }
10172
10173 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10174                                      const u8 *bssid, bool preauth, gfp_t gfp)
10175 {
10176         struct wireless_dev *wdev = dev->ieee80211_ptr;
10177         struct wiphy *wiphy = wdev->wiphy;
10178         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10179
10180         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10181         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10182 }
10183 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10184
10185 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10186                                      struct net_device *netdev,
10187                                      struct cfg80211_chan_def *chandef,
10188                                      gfp_t gfp)
10189 {
10190         struct sk_buff *msg;
10191         void *hdr;
10192
10193         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10194         if (!msg)
10195                 return;
10196
10197         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10198         if (!hdr) {
10199                 nlmsg_free(msg);
10200                 return;
10201         }
10202
10203         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10204                 goto nla_put_failure;
10205
10206         if (nl80211_send_chandef(msg, chandef))
10207                 goto nla_put_failure;
10208
10209         genlmsg_end(msg, hdr);
10210
10211         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10212                                 nl80211_mlme_mcgrp.id, gfp);
10213         return;
10214
10215  nla_put_failure:
10216         genlmsg_cancel(msg, hdr);
10217         nlmsg_free(msg);
10218 }
10219
10220 void cfg80211_ch_switch_notify(struct net_device *dev,
10221                                struct cfg80211_chan_def *chandef)
10222 {
10223         struct wireless_dev *wdev = dev->ieee80211_ptr;
10224         struct wiphy *wiphy = wdev->wiphy;
10225         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10226
10227         trace_cfg80211_ch_switch_notify(dev, chandef);
10228
10229         wdev_lock(wdev);
10230
10231         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10232                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
10233                 goto out;
10234
10235         wdev->channel = chandef->chan;
10236         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10237 out:
10238         wdev_unlock(wdev);
10239         return;
10240 }
10241 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10242
10243 void cfg80211_cqm_txe_notify(struct net_device *dev,
10244                              const u8 *peer, u32 num_packets,
10245                              u32 rate, u32 intvl, gfp_t gfp)
10246 {
10247         struct wireless_dev *wdev = dev->ieee80211_ptr;
10248         struct wiphy *wiphy = wdev->wiphy;
10249         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10250         struct sk_buff *msg;
10251         struct nlattr *pinfoattr;
10252         void *hdr;
10253
10254         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10255         if (!msg)
10256                 return;
10257
10258         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10259         if (!hdr) {
10260                 nlmsg_free(msg);
10261                 return;
10262         }
10263
10264         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10265             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10266             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10267                 goto nla_put_failure;
10268
10269         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10270         if (!pinfoattr)
10271                 goto nla_put_failure;
10272
10273         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10274                 goto nla_put_failure;
10275
10276         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10277                 goto nla_put_failure;
10278
10279         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10280                 goto nla_put_failure;
10281
10282         nla_nest_end(msg, pinfoattr);
10283
10284         genlmsg_end(msg, hdr);
10285
10286         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10287                                 nl80211_mlme_mcgrp.id, gfp);
10288         return;
10289
10290  nla_put_failure:
10291         genlmsg_cancel(msg, hdr);
10292         nlmsg_free(msg);
10293 }
10294 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10295
10296 void
10297 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10298                      struct cfg80211_chan_def *chandef,
10299                      enum nl80211_radar_event event,
10300                      struct net_device *netdev, gfp_t gfp)
10301 {
10302         struct sk_buff *msg;
10303         void *hdr;
10304
10305         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10306         if (!msg)
10307                 return;
10308
10309         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10310         if (!hdr) {
10311                 nlmsg_free(msg);
10312                 return;
10313         }
10314
10315         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10316                 goto nla_put_failure;
10317
10318         /* NOP and radar events don't need a netdev parameter */
10319         if (netdev) {
10320                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10321
10322                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10323                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10324                         goto nla_put_failure;
10325         }
10326
10327         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10328                 goto nla_put_failure;
10329
10330         if (nl80211_send_chandef(msg, chandef))
10331                 goto nla_put_failure;
10332
10333         if (genlmsg_end(msg, hdr) < 0) {
10334                 nlmsg_free(msg);
10335                 return;
10336         }
10337
10338         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10339                                 nl80211_mlme_mcgrp.id, gfp);
10340         return;
10341
10342  nla_put_failure:
10343         genlmsg_cancel(msg, hdr);
10344         nlmsg_free(msg);
10345 }
10346
10347 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10348                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10349 {
10350         struct wireless_dev *wdev = dev->ieee80211_ptr;
10351         struct wiphy *wiphy = wdev->wiphy;
10352         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10353         struct sk_buff *msg;
10354         struct nlattr *pinfoattr;
10355         void *hdr;
10356
10357         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10358
10359         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10360         if (!msg)
10361                 return;
10362
10363         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10364         if (!hdr) {
10365                 nlmsg_free(msg);
10366                 return;
10367         }
10368
10369         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10370             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10371             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10372                 goto nla_put_failure;
10373
10374         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10375         if (!pinfoattr)
10376                 goto nla_put_failure;
10377
10378         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10379                 goto nla_put_failure;
10380
10381         nla_nest_end(msg, pinfoattr);
10382
10383         genlmsg_end(msg, hdr);
10384
10385         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10386                                 nl80211_mlme_mcgrp.id, gfp);
10387         return;
10388
10389  nla_put_failure:
10390         genlmsg_cancel(msg, hdr);
10391         nlmsg_free(msg);
10392 }
10393 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10394
10395 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10396                            u64 cookie, bool acked, gfp_t gfp)
10397 {
10398         struct wireless_dev *wdev = dev->ieee80211_ptr;
10399         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10400         struct sk_buff *msg;
10401         void *hdr;
10402         int err;
10403
10404         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10405
10406         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10407
10408         if (!msg)
10409                 return;
10410
10411         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10412         if (!hdr) {
10413                 nlmsg_free(msg);
10414                 return;
10415         }
10416
10417         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10418             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10419             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10420             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10421             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10422                 goto nla_put_failure;
10423
10424         err = genlmsg_end(msg, hdr);
10425         if (err < 0) {
10426                 nlmsg_free(msg);
10427                 return;
10428         }
10429
10430         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10431                                 nl80211_mlme_mcgrp.id, gfp);
10432         return;
10433
10434  nla_put_failure:
10435         genlmsg_cancel(msg, hdr);
10436         nlmsg_free(msg);
10437 }
10438 EXPORT_SYMBOL(cfg80211_probe_status);
10439
10440 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10441                                  const u8 *frame, size_t len,
10442                                  int freq, int sig_dbm)
10443 {
10444         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10445         struct sk_buff *msg;
10446         void *hdr;
10447         struct cfg80211_beacon_registration *reg;
10448
10449         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10450
10451         spin_lock_bh(&rdev->beacon_registrations_lock);
10452         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10453                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10454                 if (!msg) {
10455                         spin_unlock_bh(&rdev->beacon_registrations_lock);
10456                         return;
10457                 }
10458
10459                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10460                 if (!hdr)
10461                         goto nla_put_failure;
10462
10463                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10464                     (freq &&
10465                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10466                     (sig_dbm &&
10467                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10468                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10469                         goto nla_put_failure;
10470
10471                 genlmsg_end(msg, hdr);
10472
10473                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10474         }
10475         spin_unlock_bh(&rdev->beacon_registrations_lock);
10476         return;
10477
10478  nla_put_failure:
10479         spin_unlock_bh(&rdev->beacon_registrations_lock);
10480         if (hdr)
10481                 genlmsg_cancel(msg, hdr);
10482         nlmsg_free(msg);
10483 }
10484 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10485
10486 #ifdef CONFIG_PM
10487 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10488                                    struct cfg80211_wowlan_wakeup *wakeup,
10489                                    gfp_t gfp)
10490 {
10491         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10492         struct sk_buff *msg;
10493         void *hdr;
10494         int err, size = 200;
10495
10496         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10497
10498         if (wakeup)
10499                 size += wakeup->packet_present_len;
10500
10501         msg = nlmsg_new(size, gfp);
10502         if (!msg)
10503                 return;
10504
10505         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10506         if (!hdr)
10507                 goto free_msg;
10508
10509         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10510             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10511                 goto free_msg;
10512
10513         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10514                                         wdev->netdev->ifindex))
10515                 goto free_msg;
10516
10517         if (wakeup) {
10518                 struct nlattr *reasons;
10519
10520                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10521
10522                 if (wakeup->disconnect &&
10523                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10524                         goto free_msg;
10525                 if (wakeup->magic_pkt &&
10526                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10527                         goto free_msg;
10528                 if (wakeup->gtk_rekey_failure &&
10529                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10530                         goto free_msg;
10531                 if (wakeup->eap_identity_req &&
10532                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10533                         goto free_msg;
10534                 if (wakeup->four_way_handshake &&
10535                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10536                         goto free_msg;
10537                 if (wakeup->rfkill_release &&
10538                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10539                         goto free_msg;
10540
10541                 if (wakeup->pattern_idx >= 0 &&
10542                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10543                                 wakeup->pattern_idx))
10544                         goto free_msg;
10545
10546                 if (wakeup->tcp_match)
10547                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10548
10549                 if (wakeup->tcp_connlost)
10550                         nla_put_flag(msg,
10551                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10552
10553                 if (wakeup->tcp_nomoretokens)
10554                         nla_put_flag(msg,
10555                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10556
10557                 if (wakeup->packet) {
10558                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10559                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10560
10561                         if (!wakeup->packet_80211) {
10562                                 pkt_attr =
10563                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10564                                 len_attr =
10565                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10566                         }
10567
10568                         if (wakeup->packet_len &&
10569                             nla_put_u32(msg, len_attr, wakeup->packet_len))
10570                                 goto free_msg;
10571
10572                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10573                                     wakeup->packet))
10574                                 goto free_msg;
10575                 }
10576
10577                 nla_nest_end(msg, reasons);
10578         }
10579
10580         err = genlmsg_end(msg, hdr);
10581         if (err < 0)
10582                 goto free_msg;
10583
10584         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10585                                 nl80211_mlme_mcgrp.id, gfp);
10586         return;
10587
10588  free_msg:
10589         nlmsg_free(msg);
10590 }
10591 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10592 #endif
10593
10594 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10595                                 enum nl80211_tdls_operation oper,
10596                                 u16 reason_code, gfp_t gfp)
10597 {
10598         struct wireless_dev *wdev = dev->ieee80211_ptr;
10599         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10600         struct sk_buff *msg;
10601         void *hdr;
10602         int err;
10603
10604         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10605                                          reason_code);
10606
10607         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10608         if (!msg)
10609                 return;
10610
10611         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10612         if (!hdr) {
10613                 nlmsg_free(msg);
10614                 return;
10615         }
10616
10617         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10618             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10619             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10620             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10621             (reason_code > 0 &&
10622              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10623                 goto nla_put_failure;
10624
10625         err = genlmsg_end(msg, hdr);
10626         if (err < 0) {
10627                 nlmsg_free(msg);
10628                 return;
10629         }
10630
10631         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10632                                 nl80211_mlme_mcgrp.id, gfp);
10633         return;
10634
10635  nla_put_failure:
10636         genlmsg_cancel(msg, hdr);
10637         nlmsg_free(msg);
10638 }
10639 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
10640
10641 static int nl80211_netlink_notify(struct notifier_block * nb,
10642                                   unsigned long state,
10643                                   void *_notify)
10644 {
10645         struct netlink_notify *notify = _notify;
10646         struct cfg80211_registered_device *rdev;
10647         struct wireless_dev *wdev;
10648         struct cfg80211_beacon_registration *reg, *tmp;
10649
10650         if (state != NETLINK_URELEASE)
10651                 return NOTIFY_DONE;
10652
10653         rcu_read_lock();
10654
10655         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
10656                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
10657                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
10658
10659                 spin_lock_bh(&rdev->beacon_registrations_lock);
10660                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
10661                                          list) {
10662                         if (reg->nlportid == notify->portid) {
10663                                 list_del(&reg->list);
10664                                 kfree(reg);
10665                                 break;
10666                         }
10667                 }
10668                 spin_unlock_bh(&rdev->beacon_registrations_lock);
10669         }
10670
10671         rcu_read_unlock();
10672
10673         return NOTIFY_DONE;
10674 }
10675
10676 static struct notifier_block nl80211_netlink_notifier = {
10677         .notifier_call = nl80211_netlink_notify,
10678 };
10679
10680 void cfg80211_ft_event(struct net_device *netdev,
10681                        struct cfg80211_ft_event_params *ft_event)
10682 {
10683         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
10684         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10685         struct sk_buff *msg;
10686         void *hdr;
10687         int err;
10688
10689         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
10690
10691         if (!ft_event->target_ap)
10692                 return;
10693
10694         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10695         if (!msg)
10696                 return;
10697
10698         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
10699         if (!hdr) {
10700                 nlmsg_free(msg);
10701                 return;
10702         }
10703
10704         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
10705         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
10706         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
10707         if (ft_event->ies)
10708                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
10709         if (ft_event->ric_ies)
10710                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
10711                         ft_event->ric_ies);
10712
10713         err = genlmsg_end(msg, hdr);
10714         if (err < 0) {
10715                 nlmsg_free(msg);
10716                 return;
10717         }
10718
10719         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10720                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10721 }
10722 EXPORT_SYMBOL(cfg80211_ft_event);
10723
10724 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
10725 {
10726         struct cfg80211_registered_device *rdev;
10727         struct sk_buff *msg;
10728         void *hdr;
10729         u32 nlportid;
10730
10731         rdev = wiphy_to_dev(wdev->wiphy);
10732         if (!rdev->crit_proto_nlportid)
10733                 return;
10734
10735         nlportid = rdev->crit_proto_nlportid;
10736         rdev->crit_proto_nlportid = 0;
10737
10738         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10739         if (!msg)
10740                 return;
10741
10742         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
10743         if (!hdr)
10744                 goto nla_put_failure;
10745
10746         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10747             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10748                 goto nla_put_failure;
10749
10750         genlmsg_end(msg, hdr);
10751
10752         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10753         return;
10754
10755  nla_put_failure:
10756         if (hdr)
10757                 genlmsg_cancel(msg, hdr);
10758         nlmsg_free(msg);
10759
10760 }
10761 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
10762
10763 /* initialisation/exit functions */
10764
10765 int nl80211_init(void)
10766 {
10767         int err;
10768
10769         err = genl_register_family_with_ops(&nl80211_fam,
10770                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
10771         if (err)
10772                 return err;
10773
10774         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
10775         if (err)
10776                 goto err_out;
10777
10778         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
10779         if (err)
10780                 goto err_out;
10781
10782         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
10783         if (err)
10784                 goto err_out;
10785
10786         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
10787         if (err)
10788                 goto err_out;
10789
10790 #ifdef CONFIG_NL80211_TESTMODE
10791         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
10792         if (err)
10793                 goto err_out;
10794 #endif
10795
10796         err = netlink_register_notifier(&nl80211_netlink_notifier);
10797         if (err)
10798                 goto err_out;
10799
10800         return 0;
10801  err_out:
10802         genl_unregister_family(&nl80211_fam);
10803         return err;
10804 }
10805
10806 void nl80211_exit(void)
10807 {
10808         netlink_unregister_notifier(&nl80211_netlink_notifier);
10809         genl_unregister_family(&nl80211_fam);
10810 }