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 "core.h"
  23 #include "nl80211.h"
  24 #include "reg.h"
  25
  26 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  27                                    struct genl_info *info,
  28                                    struct cfg80211_crypto_settings *settings,
  29                                    int cipher_limit);
  30
  31 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
  32                             struct genl_info *info);
  33 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
  34                               struct genl_info *info);
  35
  36 /* the netlink family */
  37 static struct genl_family nl80211_fam = {
  38         .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */
  39         .name = "nl80211",      /* have users key off the name instead */
  40         .hdrsize = 0,           /* no private header */
  41         .version = 1,           /* no particular meaning now */
  42         .maxattr = NL80211_ATTR_MAX,
  43         .netnsok = true,
  44         .pre_doit = nl80211_pre_doit,
  45         .post_doit = nl80211_post_doit,
  46 };
  47
  48 /* returns ERR_PTR values */
  49 static struct wireless_dev *
  50 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  51 {
  52         struct cfg80211_registered_device *rdev;
  53         struct wireless_dev *result = NULL;
  54         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  55         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  56         u64 wdev_id;
  57         int wiphy_idx = -1;
  58         int ifidx = -1;
  59
  60         assert_cfg80211_lock();
  61
  62         if (!have_ifidx && !have_wdev_id)
  63                 return ERR_PTR(-EINVAL);
  64
  65         if (have_ifidx)
  66                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  67         if (have_wdev_id) {
  68                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  69                 wiphy_idx = wdev_id >> 32;
  70         }
  71
  72         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  73                 struct wireless_dev *wdev;
  74
  75                 if (wiphy_net(&rdev->wiphy) != netns)
  76                         continue;
  77
  78                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  79                         continue;
  80
  81                 mutex_lock(&rdev->devlist_mtx);
  82                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
  83                         if (have_ifidx && wdev->netdev &&
  84                             wdev->netdev->ifindex == ifidx) {
  85                                 result = wdev;
  86                                 break;
  87                         }
  88                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  89                                 result = wdev;
  90                                 break;
  91                         }
  92                 }
  93                 mutex_unlock(&rdev->devlist_mtx);
  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_cfg80211_lock();
 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                         mutex_lock(&tmp->devlist_mtx);
 130                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 131                                 if (wdev->identifier != (u32)wdev_id)
 132                                         continue;
 133                                 found = true;
 134                                 break;
 135                         }
 136                         mutex_unlock(&tmp->devlist_mtx);
 137
 138                         if (!found)
 139                                 tmp = NULL;
 140
 141                         if (rdev && tmp != rdev)
 142                                 return ERR_PTR(-EINVAL);
 143                         rdev = tmp;
 144                 }
 145         }
 146
 147         if (attrs[NL80211_ATTR_IFINDEX]) {
 148                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 149                 netdev = dev_get_by_index(netns, ifindex);
 150                 if (netdev) {
 151                         if (netdev->ieee80211_ptr)
 152                                 tmp = wiphy_to_dev(
 153                                                 netdev->ieee80211_ptr->wiphy);
 154                         else
 155                                 tmp = NULL;
 156
 157                         dev_put(netdev);
 158
 159                         /* not wireless device -- return error */
 160                         if (!tmp)
 161                                 return ERR_PTR(-EINVAL);
 162
 163                         /* mismatch -- return error */
 164                         if (rdev && tmp != rdev)
 165                                 return ERR_PTR(-EINVAL);
 166
 167                         rdev = tmp;
 168                 }
 169         }
 170
 171         if (!rdev)
 172                 return ERR_PTR(-ENODEV);
 173
 174         if (netns != wiphy_net(&rdev->wiphy))
 175                 return ERR_PTR(-ENODEV);
 176
 177         return rdev;
 178 }
 179
 180 /*
 181  * This function returns a pointer to the driver
 182  * that the genl_info item that is passed refers to.
 183  * If successful, it returns non-NULL and also locks
 184  * the driver's mutex!
 185  *
 186  * This means that you need to call cfg80211_unlock_rdev()
 187  * before being allowed to acquire &cfg80211_mutex!
 188  *
 189  * This is necessary because we need to lock the global
 190  * mutex to get an item off the list safely, and then
 191  * we lock the rdev mutex so it doesn't go away under us.
 192  *
 193  * We don't want to keep cfg80211_mutex locked
 194  * for all the time in order to allow requests on
 195  * other interfaces to go through at the same time.
 196  *
 197  * The result of this can be a PTR_ERR and hence must
 198  * be checked with IS_ERR() for errors.
 199  */
 200 static struct cfg80211_registered_device *
 201 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 202 {
 203         struct cfg80211_registered_device *rdev;
 204
 205         mutex_lock(&cfg80211_mutex);
 206         rdev = __cfg80211_rdev_from_attrs(netns, info->attrs);
 207
 208         /* if it is not an error we grab the lock on
 209          * it to assure it won't be going away while
 210          * we operate on it */
 211         if (!IS_ERR(rdev))
 212                 mutex_lock(&rdev->mtx);
 213
 214         mutex_unlock(&cfg80211_mutex);
 215
 216         return rdev;
 217 }
 218
 219 /* policy for the attributes */
 220 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 221         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 222         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 223                                       .len = 20-1 },
 224         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 225         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 226         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 228         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 229         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 230         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 231         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 232
 233         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 234         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 235         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 236
 237         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 238         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 239
 240         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 241         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 242                                     .len = WLAN_MAX_KEY_LEN },
 243         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 244         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 245         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 246         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 247         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 248
 249         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 250         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 251         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 254                                        .len = IEEE80211_MAX_DATA_LEN },
 255         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 257         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 258         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 259                                                .len = NL80211_MAX_SUPP_RATES },
 260         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 261         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 262         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 263         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 264                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 265         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 266
 267         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 268         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 269
 270         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 272         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 273         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 274                                            .len = NL80211_MAX_SUPP_RATES },
 275         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 276
 277         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 278         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 279
 280         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 281
 282         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 283         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 284                               .len = IEEE80211_MAX_DATA_LEN },
 285         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 286         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 287
 288         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 289                                 .len = IEEE80211_MAX_SSID_LEN },
 290         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 291         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 292         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 293         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 294         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 295         [NL80211_ATTR_STA_FLAGS2] = {
 296                 .len = sizeof(struct nl80211_sta_flag_update),
 297         },
 298         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 300         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 301         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 302         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 303         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 304         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 305         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 306         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 307                                  .len = WLAN_PMKID_LEN },
 308         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 309         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 310         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 311         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 312                                  .len = IEEE80211_MAX_DATA_LEN },
 313         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 314         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 315         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 316         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 317         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 318         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 319         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 320         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 321         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 322         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 323         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 324         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 325         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 326         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 327         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 328         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 329         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 330         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 331         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 332         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 335                                          .len = IEEE80211_MAX_DATA_LEN },
 336         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 338         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 339         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 341         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 342         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 346                                       .len = IEEE80211_MAX_DATA_LEN },
 347         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 348         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 349         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 350                 .len = NL80211_HT_CAPABILITY_LEN
 351         },
 352         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 353         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 354         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 355         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 356         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 357         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 358         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 359         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 360 };
 361
 362 /* policy for the key attributes */
 363 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 364         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 365         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 366         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 367         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 368         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 369         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 370         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 371         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 372 };
 373
 374 /* policy for the key default flags */
 375 static const struct nla_policy
 376 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 377         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 378         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 379 };
 380
 381 /* policy for WoWLAN attributes */
 382 static const struct nla_policy
 383 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 384         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 385         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 386         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 387         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 388         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 389         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 390         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 391         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 392 };
 393
 394 /* policy for GTK rekey offload attributes */
 395 static const struct nla_policy
 396 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 397         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 398         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 399         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 400 };
 401
 402 static const struct nla_policy
 403 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 404         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 405                                                  .len = IEEE80211_MAX_SSID_LEN },
 406         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 407 };
 408
 409 /* ifidx get helper */
 410 static int nl80211_get_ifidx(struct netlink_callback *cb)
 411 {
 412         int res;
 413
 414         res = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 415                           nl80211_fam.attrbuf, nl80211_fam.maxattr,
 416                           nl80211_policy);
 417         if (res)
 418                 return res;
 419
 420         if (!nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX])
 421                 return -EINVAL;
 422
 423         res = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_IFINDEX]);
 424         if (!res)
 425                 return -EINVAL;
 426         return res;
 427 }
 428
 429 static int nl80211_prepare_netdev_dump(struct sk_buff *skb,
 430                                        struct netlink_callback *cb,
 431                                        struct cfg80211_registered_device **rdev,
 432                                        struct net_device **dev)
 433 {
 434         int ifidx = cb->args[0];
 435         int err;
 436
 437         if (!ifidx)
 438                 ifidx = nl80211_get_ifidx(cb);
 439         if (ifidx < 0)
 440                 return ifidx;
 441
 442         cb->args[0] = ifidx;
 443
 444         rtnl_lock();
 445
 446         *dev = __dev_get_by_index(sock_net(skb->sk), ifidx);
 447         if (!*dev) {
 448                 err = -ENODEV;
 449                 goto out_rtnl;
 450         }
 451
 452         *rdev = cfg80211_get_dev_from_ifindex(sock_net(skb->sk), ifidx);
 453         if (IS_ERR(*rdev)) {
 454                 err = PTR_ERR(*rdev);
 455                 goto out_rtnl;
 456         }
 457
 458         return 0;
 459  out_rtnl:
 460         rtnl_unlock();
 461         return err;
 462 }
 463
 464 static void nl80211_finish_netdev_dump(struct cfg80211_registered_device *rdev)
 465 {
 466         cfg80211_unlock_rdev(rdev);
 467         rtnl_unlock();
 468 }
 469
 470 /* IE validation */
 471 static bool is_valid_ie_attr(const struct nlattr *attr)
 472 {
 473         const u8 *pos;
 474         int len;
 475
 476         if (!attr)
 477                 return true;
 478
 479         pos = nla_data(attr);
 480         len = nla_len(attr);
 481
 482         while (len) {
 483                 u8 elemlen;
 484
 485                 if (len < 2)
 486                         return false;
 487                 len -= 2;
 488
 489                 elemlen = pos[1];
 490                 if (elemlen > len)
 491                         return false;
 492
 493                 len -= elemlen;
 494                 pos += 2 + elemlen;
 495         }
 496
 497         return true;
 498 }
 499
 500 /* message building helper */
 501 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 502                                    int flags, u8 cmd)
 503 {
 504         /* since there is no private header just add the generic one */
 505         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 506 }
 507
 508 static int nl80211_msg_put_channel(struct sk_buff *msg,
 509                                    struct ieee80211_channel *chan)
 510 {
 511         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 512                         chan->center_freq))
 513                 goto nla_put_failure;
 514
 515         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 516             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 517                 goto nla_put_failure;
 518         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 519             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 520                 goto nla_put_failure;
 521         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 522             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 523                 goto nla_put_failure;
 524         if ((chan->flags & IEEE80211_CHAN_RADAR) &&
 525             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 526                 goto nla_put_failure;
 527
 528         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 529                         DBM_TO_MBM(chan->max_power)))
 530                 goto nla_put_failure;
 531
 532         return 0;
 533
 534  nla_put_failure:
 535         return -ENOBUFS;
 536 }
 537
 538 /* netlink command implementations */
 539
 540 struct key_parse {
 541         struct key_params p;
 542         int idx;
 543         int type;
 544         bool def, defmgmt;
 545         bool def_uni, def_multi;
 546 };
 547
 548 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 549 {
 550         struct nlattr *tb[NL80211_KEY_MAX + 1];
 551         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 552                                    nl80211_key_policy);
 553         if (err)
 554                 return err;
 555
 556         k->def = !!tb[NL80211_KEY_DEFAULT];
 557         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 558
 559         if (k->def) {
 560                 k->def_uni = true;
 561                 k->def_multi = true;
 562         }
 563         if (k->defmgmt)
 564                 k->def_multi = true;
 565
 566         if (tb[NL80211_KEY_IDX])
 567                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 568
 569         if (tb[NL80211_KEY_DATA]) {
 570                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 571                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 572         }
 573
 574         if (tb[NL80211_KEY_SEQ]) {
 575                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 576                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 577         }
 578
 579         if (tb[NL80211_KEY_CIPHER])
 580                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 581
 582         if (tb[NL80211_KEY_TYPE]) {
 583                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 584                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 585                         return -EINVAL;
 586         }
 587
 588         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 589                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 590                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 591                                        tb[NL80211_KEY_DEFAULT_TYPES],
 592                                        nl80211_key_default_policy);
 593                 if (err)
 594                         return err;
 595
 596                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 597                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 598         }
 599
 600         return 0;
 601 }
 602
 603 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 604 {
 605         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 606                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 607                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 608         }
 609
 610         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 611                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 612                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 613         }
 614
 615         if (info->attrs[NL80211_ATTR_KEY_IDX])
 616                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 617
 618         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 619                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 620
 621         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 622         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 623
 624         if (k->def) {
 625                 k->def_uni = true;
 626                 k->def_multi = true;
 627         }
 628         if (k->defmgmt)
 629                 k->def_multi = true;
 630
 631         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 632                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 633                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 634                         return -EINVAL;
 635         }
 636
 637         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 638                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 639                 int err = nla_parse_nested(
 640                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 641                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 642                                 nl80211_key_default_policy);
 643                 if (err)
 644                         return err;
 645
 646                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 647                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 648         }
 649
 650         return 0;
 651 }
 652
 653 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 654 {
 655         int err;
 656
 657         memset(k, 0, sizeof(*k));
 658         k->idx = -1;
 659         k->type = -1;
 660
 661         if (info->attrs[NL80211_ATTR_KEY])
 662                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 663         else
 664                 err = nl80211_parse_key_old(info, k);
 665
 666         if (err)
 667                 return err;
 668
 669         if (k->def && k->defmgmt)
 670                 return -EINVAL;
 671
 672         if (k->defmgmt) {
 673                 if (k->def_uni || !k->def_multi)
 674                         return -EINVAL;
 675         }
 676
 677         if (k->idx != -1) {
 678                 if (k->defmgmt) {
 679                         if (k->idx < 4 || k->idx > 5)
 680                                 return -EINVAL;
 681                 } else if (k->def) {
 682                         if (k->idx < 0 || k->idx > 3)
 683                                 return -EINVAL;
 684                 } else {
 685                         if (k->idx < 0 || k->idx > 5)
 686                                 return -EINVAL;
 687                 }
 688         }
 689
 690         return 0;
 691 }
 692
 693 static struct cfg80211_cached_keys *
 694 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 695                        struct nlattr *keys)
 696 {
 697         struct key_parse parse;
 698         struct nlattr *key;
 699         struct cfg80211_cached_keys *result;
 700         int rem, err, def = 0;
 701
 702         result = kzalloc(sizeof(*result), GFP_KERNEL);
 703         if (!result)
 704                 return ERR_PTR(-ENOMEM);
 705
 706         result->def = -1;
 707         result->defmgmt = -1;
 708
 709         nla_for_each_nested(key, keys, rem) {
 710                 memset(&parse, 0, sizeof(parse));
 711                 parse.idx = -1;
 712
 713                 err = nl80211_parse_key_new(key, &parse);
 714                 if (err)
 715                         goto error;
 716                 err = -EINVAL;
 717                 if (!parse.p.key)
 718                         goto error;
 719                 if (parse.idx < 0 || parse.idx > 4)
 720                         goto error;
 721                 if (parse.def) {
 722                         if (def)
 723                                 goto error;
 724                         def = 1;
 725                         result->def = parse.idx;
 726                         if (!parse.def_uni || !parse.def_multi)
 727                                 goto error;
 728                 } else if (parse.defmgmt)
 729                         goto error;
 730                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 731                                                      parse.idx, false, NULL);
 732                 if (err)
 733                         goto error;
 734                 result->params[parse.idx].cipher = parse.p.cipher;
 735                 result->params[parse.idx].key_len = parse.p.key_len;
 736                 result->params[parse.idx].key = result->data[parse.idx];
 737                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 738         }
 739
 740         return result;
 741  error:
 742         kfree(result);
 743         return ERR_PTR(err);
 744 }
 745
 746 static int nl80211_key_allowed(struct wireless_dev *wdev)
 747 {
 748         ASSERT_WDEV_LOCK(wdev);
 749
 750         switch (wdev->iftype) {
 751         case NL80211_IFTYPE_AP:
 752         case NL80211_IFTYPE_AP_VLAN:
 753         case NL80211_IFTYPE_P2P_GO:
 754         case NL80211_IFTYPE_MESH_POINT:
 755                 break;
 756         case NL80211_IFTYPE_ADHOC:
 757                 if (!wdev->current_bss)
 758                         return -ENOLINK;
 759                 break;
 760         case NL80211_IFTYPE_STATION:
 761         case NL80211_IFTYPE_P2P_CLIENT:
 762                 if (wdev->sme_state != CFG80211_SME_CONNECTED)
 763                         return -ENOLINK;
 764                 break;
 765         default:
 766                 return -EINVAL;
 767         }
 768
 769         return 0;
 770 }
 771
 772 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 773 {
 774         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 775         int i;
 776
 777         if (!nl_modes)
 778                 goto nla_put_failure;
 779
 780         i = 0;
 781         while (ifmodes) {
 782                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 783                         goto nla_put_failure;
 784                 ifmodes >>= 1;
 785                 i++;
 786         }
 787
 788         nla_nest_end(msg, nl_modes);
 789         return 0;
 790
 791 nla_put_failure:
 792         return -ENOBUFS;
 793 }
 794
 795 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 796                                           struct sk_buff *msg)
 797 {
 798         struct nlattr *nl_combis;
 799         int i, j;
 800
 801         nl_combis = nla_nest_start(msg,
 802                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 803         if (!nl_combis)
 804                 goto nla_put_failure;
 805
 806         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 807                 const struct ieee80211_iface_combination *c;
 808                 struct nlattr *nl_combi, *nl_limits;
 809
 810                 c = &wiphy->iface_combinations[i];
 811
 812                 nl_combi = nla_nest_start(msg, i + 1);
 813                 if (!nl_combi)
 814                         goto nla_put_failure;
 815
 816                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 817                 if (!nl_limits)
 818                         goto nla_put_failure;
 819
 820                 for (j = 0; j < c->n_limits; j++) {
 821                         struct nlattr *nl_limit;
 822
 823                         nl_limit = nla_nest_start(msg, j + 1);
 824                         if (!nl_limit)
 825                                 goto nla_put_failure;
 826                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 827                                         c->limits[j].max))
 828                                 goto nla_put_failure;
 829                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 830                                                 c->limits[j].types))
 831                                 goto nla_put_failure;
 832                         nla_nest_end(msg, nl_limit);
 833                 }
 834
 835                 nla_nest_end(msg, nl_limits);
 836
 837                 if (c->beacon_int_infra_match &&
 838                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 839                         goto nla_put_failure;
 840                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 841                                 c->num_different_channels) ||
 842                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 843                                 c->max_interfaces))
 844                         goto nla_put_failure;
 845
 846                 nla_nest_end(msg, nl_combi);
 847         }
 848
 849         nla_nest_end(msg, nl_combis);
 850
 851         return 0;
 852 nla_put_failure:
 853         return -ENOBUFS;
 854 }
 855
 856 static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags,
 857                               struct cfg80211_registered_device *dev)
 858 {
 859         void *hdr;
 860         struct nlattr *nl_bands, *nl_band;
 861         struct nlattr *nl_freqs, *nl_freq;
 862         struct nlattr *nl_rates, *nl_rate;
 863         struct nlattr *nl_cmds;
 864         enum ieee80211_band band;
 865         struct ieee80211_channel *chan;
 866         struct ieee80211_rate *rate;
 867         int i;
 868         const struct ieee80211_txrx_stypes *mgmt_stypes =
 869                                 dev->wiphy.mgmt_stypes;
 870
 871         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
 872         if (!hdr)
 873                 return -1;
 874
 875         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
 876             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, wiphy_name(&dev->wiphy)) ||
 877             nla_put_u32(msg, NL80211_ATTR_GENERATION,
 878                         cfg80211_rdev_list_generation) ||
 879             nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
 880                        dev->wiphy.retry_short) ||
 881             nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
 882                        dev->wiphy.retry_long) ||
 883             nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
 884                         dev->wiphy.frag_threshold) ||
 885             nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
 886                         dev->wiphy.rts_threshold) ||
 887             nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
 888                        dev->wiphy.coverage_class) ||
 889             nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
 890                        dev->wiphy.max_scan_ssids) ||
 891             nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
 892                        dev->wiphy.max_sched_scan_ssids) ||
 893             nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
 894                         dev->wiphy.max_scan_ie_len) ||
 895             nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
 896                         dev->wiphy.max_sched_scan_ie_len) ||
 897             nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
 898                        dev->wiphy.max_match_sets))
 899                 goto nla_put_failure;
 900
 901         if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
 902             nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
 903                 goto nla_put_failure;
 904         if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
 905             nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
 906                 goto nla_put_failure;
 907         if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
 908             nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
 909                 goto nla_put_failure;
 910         if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
 911             nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
 912                 goto nla_put_failure;
 913         if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
 914             nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
 915                 goto nla_put_failure;
 916         if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
 917             nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
 918                 goto nla_put_failure;
 919
 920         if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
 921                     sizeof(u32) * dev->wiphy.n_cipher_suites,
 922                     dev->wiphy.cipher_suites))
 923                 goto nla_put_failure;
 924
 925         if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
 926                        dev->wiphy.max_num_pmkids))
 927                 goto nla_put_failure;
 928
 929         if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
 930             nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
 931                 goto nla_put_failure;
 932
 933         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
 934                         dev->wiphy.available_antennas_tx) ||
 935             nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
 936                         dev->wiphy.available_antennas_rx))
 937                 goto nla_put_failure;
 938
 939         if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
 940             nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
 941                         dev->wiphy.probe_resp_offload))
 942                 goto nla_put_failure;
 943
 944         if ((dev->wiphy.available_antennas_tx ||
 945              dev->wiphy.available_antennas_rx) && dev->ops->get_antenna) {
 946                 u32 tx_ant = 0, rx_ant = 0;
 947                 int res;
 948                 res = dev->ops->get_antenna(&dev->wiphy, &tx_ant, &rx_ant);
 949                 if (!res) {
 950                         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_TX,
 951                                         tx_ant) ||
 952                             nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_RX,
 953                                         rx_ant))
 954                                 goto nla_put_failure;
 955                 }
 956         }
 957
 958         if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
 959                                 dev->wiphy.interface_modes))
 960                 goto nla_put_failure;
 961
 962         nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
 963         if (!nl_bands)
 964                 goto nla_put_failure;
 965
 966         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 967                 if (!dev->wiphy.bands[band])
 968                         continue;
 969
 970                 nl_band = nla_nest_start(msg, band);
 971                 if (!nl_band)
 972                         goto nla_put_failure;
 973
 974                 /* add HT info */
 975                 if (dev->wiphy.bands[band]->ht_cap.ht_supported &&
 976                     (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
 977                              sizeof(dev->wiphy.bands[band]->ht_cap.mcs),
 978                              &dev->wiphy.bands[band]->ht_cap.mcs) ||
 979                      nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
 980                                  dev->wiphy.bands[band]->ht_cap.cap) ||
 981                      nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
 982                                 dev->wiphy.bands[band]->ht_cap.ampdu_factor) ||
 983                      nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
 984                                 dev->wiphy.bands[band]->ht_cap.ampdu_density)))
 985                         goto nla_put_failure;
 986
 987                 /* add VHT info */
 988                 if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
 989                     (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
 990                              sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
 991                              &dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
 992                      nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
 993                                  dev->wiphy.bands[band]->vht_cap.cap)))
 994                         goto nla_put_failure;
 995
 996                 /* add frequencies */
 997                 nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
 998                 if (!nl_freqs)
 999                         goto nla_put_failure;
1000
1001                 for (i = 0; i < dev->wiphy.bands[band]->n_channels; i++) {
1002                         nl_freq = nla_nest_start(msg, i);
1003                         if (!nl_freq)
1004                                 goto nla_put_failure;
1005
1006                         chan = &dev->wiphy.bands[band]->channels[i];
1007
1008                         if (nl80211_msg_put_channel(msg, chan))
1009                                 goto nla_put_failure;
1010
1011                         nla_nest_end(msg, nl_freq);
1012                 }
1013
1014                 nla_nest_end(msg, nl_freqs);
1015
1016                 /* add bitrates */
1017                 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1018                 if (!nl_rates)
1019                         goto nla_put_failure;
1020
1021                 for (i = 0; i < dev->wiphy.bands[band]->n_bitrates; i++) {
1022                         nl_rate = nla_nest_start(msg, i);
1023                         if (!nl_rate)
1024                                 goto nla_put_failure;
1025
1026                         rate = &dev->wiphy.bands[band]->bitrates[i];
1027                         if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1028                                         rate->bitrate))
1029                                 goto nla_put_failure;
1030                         if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1031                             nla_put_flag(msg,
1032                                          NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1033                                 goto nla_put_failure;
1034
1035                         nla_nest_end(msg, nl_rate);
1036                 }
1037
1038                 nla_nest_end(msg, nl_rates);
1039
1040                 nla_nest_end(msg, nl_band);
1041         }
1042         nla_nest_end(msg, nl_bands);
1043
1044         nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1045         if (!nl_cmds)
1046                 goto nla_put_failure;
1047
1048         i = 0;
1049 #define CMD(op, n)                                              \
1050          do {                                                   \
1051                 if (dev->ops->op) {                             \
1052                         i++;                                    \
1053                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1054                                 goto nla_put_failure;           \
1055                 }                                               \
1056         } while (0)
1057
1058         CMD(add_virtual_intf, NEW_INTERFACE);
1059         CMD(change_virtual_intf, SET_INTERFACE);
1060         CMD(add_key, NEW_KEY);
1061         CMD(start_ap, START_AP);
1062         CMD(add_station, NEW_STATION);
1063         CMD(add_mpath, NEW_MPATH);
1064         CMD(update_mesh_config, SET_MESH_CONFIG);
1065         CMD(change_bss, SET_BSS);
1066         CMD(auth, AUTHENTICATE);
1067         CMD(assoc, ASSOCIATE);
1068         CMD(deauth, DEAUTHENTICATE);
1069         CMD(disassoc, DISASSOCIATE);
1070         CMD(join_ibss, JOIN_IBSS);
1071         CMD(join_mesh, JOIN_MESH);
1072         CMD(set_pmksa, SET_PMKSA);
1073         CMD(del_pmksa, DEL_PMKSA);
1074         CMD(flush_pmksa, FLUSH_PMKSA);
1075         if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1076                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1077         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1078         CMD(mgmt_tx, FRAME);
1079         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1080         if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1081                 i++;
1082                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1083                         goto nla_put_failure;
1084         }
1085         if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1086             dev->ops->join_mesh) {
1087                 i++;
1088                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1089                         goto nla_put_failure;
1090         }
1091         CMD(set_wds_peer, SET_WDS_PEER);
1092         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1093                 CMD(tdls_mgmt, TDLS_MGMT);
1094                 CMD(tdls_oper, TDLS_OPER);
1095         }
1096         if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1097                 CMD(sched_scan_start, START_SCHED_SCAN);
1098         CMD(probe_client, PROBE_CLIENT);
1099         CMD(set_noack_map, SET_NOACK_MAP);
1100         if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1101                 i++;
1102                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1103                         goto nla_put_failure;
1104         }
1105         CMD(start_p2p_device, START_P2P_DEVICE);
1106
1107 #ifdef CONFIG_NL80211_TESTMODE
1108         CMD(testmode_cmd, TESTMODE);
1109 #endif
1110
1111 #undef CMD
1112
1113         if (dev->ops->connect || dev->ops->auth) {
1114                 i++;
1115                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1116                         goto nla_put_failure;
1117         }
1118
1119         if (dev->ops->disconnect || dev->ops->deauth) {
1120                 i++;
1121                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1122                         goto nla_put_failure;
1123         }
1124
1125         nla_nest_end(msg, nl_cmds);
1126
1127         if (dev->ops->remain_on_channel &&
1128             (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1129             nla_put_u32(msg, NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1130                         dev->wiphy.max_remain_on_channel_duration))
1131                 goto nla_put_failure;
1132
1133         if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1134             nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1135                 goto nla_put_failure;
1136
1137         if (mgmt_stypes) {
1138                 u16 stypes;
1139                 struct nlattr *nl_ftypes, *nl_ifs;
1140                 enum nl80211_iftype ift;
1141
1142                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1143                 if (!nl_ifs)
1144                         goto nla_put_failure;
1145
1146                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1147                         nl_ftypes = nla_nest_start(msg, ift);
1148                         if (!nl_ftypes)
1149                                 goto nla_put_failure;
1150                         i = 0;
1151                         stypes = mgmt_stypes[ift].tx;
1152                         while (stypes) {
1153                                 if ((stypes & 1) &&
1154                                     nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1155                                                 (i << 4) | IEEE80211_FTYPE_MGMT))
1156                                         goto nla_put_failure;
1157                                 stypes >>= 1;
1158                                 i++;
1159                         }
1160                         nla_nest_end(msg, nl_ftypes);
1161                 }
1162
1163                 nla_nest_end(msg, nl_ifs);
1164
1165                 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1166                 if (!nl_ifs)
1167                         goto nla_put_failure;
1168
1169                 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1170                         nl_ftypes = nla_nest_start(msg, ift);
1171                         if (!nl_ftypes)
1172                                 goto nla_put_failure;
1173                         i = 0;
1174                         stypes = mgmt_stypes[ift].rx;
1175                         while (stypes) {
1176                                 if ((stypes & 1) &&
1177                                     nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1178                                                 (i << 4) | IEEE80211_FTYPE_MGMT))
1179                                         goto nla_put_failure;
1180                                 stypes >>= 1;
1181                                 i++;
1182                         }
1183                         nla_nest_end(msg, nl_ftypes);
1184                 }
1185                 nla_nest_end(msg, nl_ifs);
1186         }
1187
1188 #ifdef CONFIG_PM
1189         if (dev->wiphy.wowlan.flags || dev->wiphy.wowlan.n_patterns) {
1190                 struct nlattr *nl_wowlan;
1191
1192                 nl_wowlan = nla_nest_start(msg,
1193                                 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1194                 if (!nl_wowlan)
1195                         goto nla_put_failure;
1196
1197                 if (((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_ANY) &&
1198                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1199                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_DISCONNECT) &&
1200                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1201                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1202                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1203                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1204                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1205                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1206                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1207                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1208                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1209                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1210                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1211                     ((dev->wiphy.wowlan.flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1212                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1213                     goto nla_put_failure;
1214                 if (dev->wiphy.wowlan.n_patterns) {
1215                         struct nl80211_wowlan_pattern_support pat = {
1216                                 .max_patterns = dev->wiphy.wowlan.n_patterns,
1217                                 .min_pattern_len =
1218                                         dev->wiphy.wowlan.pattern_min_len,
1219                                 .max_pattern_len =
1220                                         dev->wiphy.wowlan.pattern_max_len,
1221                         };
1222                         if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1223                                     sizeof(pat), &pat))
1224                                 goto nla_put_failure;
1225                 }
1226
1227                 nla_nest_end(msg, nl_wowlan);
1228         }
1229 #endif
1230
1231         if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1232                                 dev->wiphy.software_iftypes))
1233                 goto nla_put_failure;
1234
1235         if (nl80211_put_iface_combinations(&dev->wiphy, msg))
1236                 goto nla_put_failure;
1237
1238         if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1239             nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1240                         dev->wiphy.ap_sme_capa))
1241                 goto nla_put_failure;
1242
1243         if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS,
1244                         dev->wiphy.features))
1245                 goto nla_put_failure;
1246
1247         if (dev->wiphy.ht_capa_mod_mask &&
1248             nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1249                     sizeof(*dev->wiphy.ht_capa_mod_mask),
1250                     dev->wiphy.ht_capa_mod_mask))
1251                 goto nla_put_failure;
1252
1253         return genlmsg_end(msg, hdr);
1254
1255  nla_put_failure:
1256         genlmsg_cancel(msg, hdr);
1257         return -EMSGSIZE;
1258 }
1259
1260 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1261 {
1262         int idx = 0;
1263         int start = cb->args[0];
1264         struct cfg80211_registered_device *dev;
1265
1266         mutex_lock(&cfg80211_mutex);
1267         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1268                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1269                         continue;
1270                 if (++idx <= start)
1271                         continue;
1272                 if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid,
1273                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
1274                                        dev) < 0) {
1275                         idx--;
1276                         break;
1277                 }
1278         }
1279         mutex_unlock(&cfg80211_mutex);
1280
1281         cb->args[0] = idx;
1282
1283         return skb->len;
1284 }
1285
1286 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1287 {
1288         struct sk_buff *msg;
1289         struct cfg80211_registered_device *dev = info->user_ptr[0];
1290
1291         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1292         if (!msg)
1293                 return -ENOMEM;
1294
1295         if (nl80211_send_wiphy(msg, info->snd_portid, info->snd_seq, 0, dev) < 0) {
1296                 nlmsg_free(msg);
1297                 return -ENOBUFS;
1298         }
1299
1300         return genlmsg_reply(msg, info);
1301 }
1302
1303 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1304         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1305         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1306         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1307         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1308         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1309 };
1310
1311 static int parse_txq_params(struct nlattr *tb[],
1312                             struct ieee80211_txq_params *txq_params)
1313 {
1314         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1315             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1316             !tb[NL80211_TXQ_ATTR_AIFS])
1317                 return -EINVAL;
1318
1319         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1320         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1321         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1322         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1323         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1324
1325         if (txq_params->ac >= NL80211_NUM_ACS)
1326                 return -EINVAL;
1327
1328         return 0;
1329 }
1330
1331 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1332 {
1333         /*
1334          * You can only set the channel explicitly for WDS interfaces,
1335          * all others have their channel managed via their respective
1336          * "establish a connection" command (connect, join, ...)
1337          *
1338          * For AP/GO and mesh mode, the channel can be set with the
1339          * channel userspace API, but is only stored and passed to the
1340          * low-level driver when the AP starts or the mesh is joined.
1341          * This is for backward compatibility, userspace can also give
1342          * the channel in the start-ap or join-mesh commands instead.
1343          *
1344          * Monitors are special as they are normally slaved to
1345          * whatever else is going on, so they have their own special
1346          * operation to set the monitor channel if possible.
1347          */
1348         return !wdev ||
1349                 wdev->iftype == NL80211_IFTYPE_AP ||
1350                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1351                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1352                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1353 }
1354
1355 static bool nl80211_valid_channel_type(struct genl_info *info,
1356                                        enum nl80211_channel_type *channel_type)
1357 {
1358         enum nl80211_channel_type tmp;
1359
1360         if (!info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
1361                 return false;
1362
1363         tmp = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1364         if (tmp != NL80211_CHAN_NO_HT &&
1365             tmp != NL80211_CHAN_HT20 &&
1366             tmp != NL80211_CHAN_HT40PLUS &&
1367             tmp != NL80211_CHAN_HT40MINUS)
1368                 return false;
1369
1370         if (channel_type)
1371                 *channel_type = tmp;
1372
1373         return true;
1374 }
1375
1376 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1377                                  struct wireless_dev *wdev,
1378                                  struct genl_info *info)
1379 {
1380         struct ieee80211_channel *channel;
1381         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
1382         u32 freq;
1383         int result;
1384         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1385
1386         if (wdev)
1387                 iftype = wdev->iftype;
1388
1389         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1390                 return -EINVAL;
1391
1392         if (!nl80211_can_set_dev_channel(wdev))
1393                 return -EOPNOTSUPP;
1394
1395         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
1396             !nl80211_valid_channel_type(info, &channel_type))
1397                 return -EINVAL;
1398
1399         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1400
1401         mutex_lock(&rdev->devlist_mtx);
1402         switch (iftype) {
1403         case NL80211_IFTYPE_AP:
1404         case NL80211_IFTYPE_P2P_GO:
1405                 if (wdev->beacon_interval) {
1406                         result = -EBUSY;
1407                         break;
1408                 }
1409                 channel = rdev_freq_to_chan(rdev, freq, channel_type);
1410                 if (!channel || !cfg80211_can_beacon_sec_chan(&rdev->wiphy,
1411                                                               channel,
1412                                                               channel_type)) {
1413                         result = -EINVAL;
1414                         break;
1415                 }
1416                 wdev->preset_chan = channel;
1417                 wdev->preset_chantype = channel_type;
1418                 result = 0;
1419                 break;
1420         case NL80211_IFTYPE_MESH_POINT:
1421                 result = cfg80211_set_mesh_freq(rdev, wdev, freq, channel_type);
1422                 break;
1423         case NL80211_IFTYPE_MONITOR:
1424                 result = cfg80211_set_monitor_channel(rdev, freq, channel_type);
1425                 break;
1426         default:
1427                 result = -EINVAL;
1428         }
1429         mutex_unlock(&rdev->devlist_mtx);
1430
1431         return result;
1432 }
1433
1434 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1435 {
1436         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1437         struct net_device *netdev = info->user_ptr[1];
1438
1439         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1440 }
1441
1442 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1443 {
1444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1445         struct net_device *dev = info->user_ptr[1];
1446         struct wireless_dev *wdev = dev->ieee80211_ptr;
1447         const u8 *bssid;
1448
1449         if (!info->attrs[NL80211_ATTR_MAC])
1450                 return -EINVAL;
1451
1452         if (netif_running(dev))
1453                 return -EBUSY;
1454
1455         if (!rdev->ops->set_wds_peer)
1456                 return -EOPNOTSUPP;
1457
1458         if (wdev->iftype != NL80211_IFTYPE_WDS)
1459                 return -EOPNOTSUPP;
1460
1461         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1462         return rdev->ops->set_wds_peer(wdev->wiphy, dev, bssid);
1463 }
1464
1465
1466 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1467 {
1468         struct cfg80211_registered_device *rdev;
1469         struct net_device *netdev = NULL;
1470         struct wireless_dev *wdev;
1471         int result = 0, rem_txq_params = 0;
1472         struct nlattr *nl_txq_params;
1473         u32 changed;
1474         u8 retry_short = 0, retry_long = 0;
1475         u32 frag_threshold = 0, rts_threshold = 0;
1476         u8 coverage_class = 0;
1477
1478         /*
1479          * Try to find the wiphy and netdev. Normally this
1480          * function shouldn't need the netdev, but this is
1481          * done for backward compatibility -- previously
1482          * setting the channel was done per wiphy, but now
1483          * it is per netdev. Previous userland like hostapd
1484          * also passed a netdev to set_wiphy, so that it is
1485          * possible to let that go to the right netdev!
1486          */
1487         mutex_lock(&cfg80211_mutex);
1488
1489         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1490                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1491
1492                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1493                 if (netdev && netdev->ieee80211_ptr) {
1494                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1495                         mutex_lock(&rdev->mtx);
1496                 } else
1497                         netdev = NULL;
1498         }
1499
1500         if (!netdev) {
1501                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1502                                                   info->attrs);
1503                 if (IS_ERR(rdev)) {
1504                         mutex_unlock(&cfg80211_mutex);
1505                         return PTR_ERR(rdev);
1506                 }
1507                 wdev = NULL;
1508                 netdev = NULL;
1509                 result = 0;
1510
1511                 mutex_lock(&rdev->mtx);
1512         } else if (nl80211_can_set_dev_channel(netdev->ieee80211_ptr))
1513                 wdev = netdev->ieee80211_ptr;
1514         else
1515                 wdev = NULL;
1516
1517         /*
1518          * end workaround code, by now the rdev is available
1519          * and locked, and wdev may or may not be NULL.
1520          */
1521
1522         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1523                 result = cfg80211_dev_rename(
1524                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1525
1526         mutex_unlock(&cfg80211_mutex);
1527
1528         if (result)
1529                 goto bad_res;
1530
1531         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1532                 struct ieee80211_txq_params txq_params;
1533                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1534
1535                 if (!rdev->ops->set_txq_params) {
1536                         result = -EOPNOTSUPP;
1537                         goto bad_res;
1538                 }
1539
1540                 if (!netdev) {
1541                         result = -EINVAL;
1542                         goto bad_res;
1543                 }
1544
1545                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1546                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1547                         result = -EINVAL;
1548                         goto bad_res;
1549                 }
1550
1551                 if (!netif_running(netdev)) {
1552                         result = -ENETDOWN;
1553                         goto bad_res;
1554                 }
1555
1556                 nla_for_each_nested(nl_txq_params,
1557                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1558                                     rem_txq_params) {
1559                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1560                                   nla_data(nl_txq_params),
1561                                   nla_len(nl_txq_params),
1562                                   txq_params_policy);
1563                         result = parse_txq_params(tb, &txq_params);
1564                         if (result)
1565                                 goto bad_res;
1566
1567                         result = rdev->ops->set_txq_params(&rdev->wiphy,
1568                                                            netdev,
1569                                                            &txq_params);
1570                         if (result)
1571                                 goto bad_res;
1572                 }
1573         }
1574
1575         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1576                 result = __nl80211_set_channel(rdev, wdev, info);
1577                 if (result)
1578                         goto bad_res;
1579         }
1580
1581         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1582                 enum nl80211_tx_power_setting type;
1583                 int idx, mbm = 0;
1584
1585                 if (!rdev->ops->set_tx_power) {
1586                         result = -EOPNOTSUPP;
1587                         goto bad_res;
1588                 }
1589
1590                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
1591                 type = nla_get_u32(info->attrs[idx]);
1592
1593                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
1594                     (type != NL80211_TX_POWER_AUTOMATIC)) {
1595                         result = -EINVAL;
1596                         goto bad_res;
1597                 }
1598
1599                 if (type != NL80211_TX_POWER_AUTOMATIC) {
1600                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
1601                         mbm = nla_get_u32(info->attrs[idx]);
1602                 }
1603
1604                 result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm);
1605                 if (result)
1606                         goto bad_res;
1607         }
1608
1609         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
1610             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
1611                 u32 tx_ant, rx_ant;
1612                 if ((!rdev->wiphy.available_antennas_tx &&
1613                      !rdev->wiphy.available_antennas_rx) ||
1614                     !rdev->ops->set_antenna) {
1615                         result = -EOPNOTSUPP;
1616                         goto bad_res;
1617                 }
1618
1619                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
1620                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
1621
1622                 /* reject antenna configurations which don't match the
1623                  * available antenna masks, except for the "all" mask */
1624                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
1625                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
1626                         result = -EINVAL;
1627                         goto bad_res;
1628                 }
1629
1630                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
1631                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
1632
1633                 result = rdev->ops->set_antenna(&rdev->wiphy, tx_ant, rx_ant);
1634                 if (result)
1635                         goto bad_res;
1636         }
1637
1638         changed = 0;
1639
1640         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
1641                 retry_short = nla_get_u8(
1642                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
1643                 if (retry_short == 0) {
1644                         result = -EINVAL;
1645                         goto bad_res;
1646                 }
1647                 changed |= WIPHY_PARAM_RETRY_SHORT;
1648         }
1649
1650         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
1651                 retry_long = nla_get_u8(
1652                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
1653                 if (retry_long == 0) {
1654                         result = -EINVAL;
1655                         goto bad_res;
1656                 }
1657                 changed |= WIPHY_PARAM_RETRY_LONG;
1658         }
1659
1660         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
1661                 frag_threshold = nla_get_u32(
1662                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
1663                 if (frag_threshold < 256) {
1664                         result = -EINVAL;
1665                         goto bad_res;
1666                 }
1667                 if (frag_threshold != (u32) -1) {
1668                         /*
1669                          * Fragments (apart from the last one) are required to
1670                          * have even length. Make the fragmentation code
1671                          * simpler by stripping LSB should someone try to use
1672                          * odd threshold value.
1673                          */
1674                         frag_threshold &= ~0x1;
1675                 }
1676                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
1677         }
1678
1679         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
1680                 rts_threshold = nla_get_u32(
1681                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
1682                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
1683         }
1684
1685         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
1686                 coverage_class = nla_get_u8(
1687                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
1688                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
1689         }
1690
1691         if (changed) {
1692                 u8 old_retry_short, old_retry_long;
1693                 u32 old_frag_threshold, old_rts_threshold;
1694                 u8 old_coverage_class;
1695
1696                 if (!rdev->ops->set_wiphy_params) {
1697                         result = -EOPNOTSUPP;
1698                         goto bad_res;
1699                 }
1700
1701                 old_retry_short = rdev->wiphy.retry_short;
1702                 old_retry_long = rdev->wiphy.retry_long;
1703                 old_frag_threshold = rdev->wiphy.frag_threshold;
1704                 old_rts_threshold = rdev->wiphy.rts_threshold;
1705                 old_coverage_class = rdev->wiphy.coverage_class;
1706
1707                 if (changed & WIPHY_PARAM_RETRY_SHORT)
1708                         rdev->wiphy.retry_short = retry_short;
1709                 if (changed & WIPHY_PARAM_RETRY_LONG)
1710                         rdev->wiphy.retry_long = retry_long;
1711                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
1712                         rdev->wiphy.frag_threshold = frag_threshold;
1713                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
1714                         rdev->wiphy.rts_threshold = rts_threshold;
1715                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
1716                         rdev->wiphy.coverage_class = coverage_class;
1717
1718                 result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
1719                 if (result) {
1720                         rdev->wiphy.retry_short = old_retry_short;
1721                         rdev->wiphy.retry_long = old_retry_long;
1722                         rdev->wiphy.frag_threshold = old_frag_threshold;
1723                         rdev->wiphy.rts_threshold = old_rts_threshold;
1724                         rdev->wiphy.coverage_class = old_coverage_class;
1725                 }
1726         }
1727
1728  bad_res:
1729         mutex_unlock(&rdev->mtx);
1730         if (netdev)
1731                 dev_put(netdev);
1732         return result;
1733 }
1734
1735 static inline u64 wdev_id(struct wireless_dev *wdev)
1736 {
1737         return (u64)wdev->identifier |
1738                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
1739 }
1740
1741 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
1742                               struct cfg80211_registered_device *rdev,
1743                               struct wireless_dev *wdev)
1744 {
1745         struct net_device *dev = wdev->netdev;
1746         void *hdr;
1747
1748         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
1749         if (!hdr)
1750                 return -1;
1751
1752         if (dev &&
1753             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
1754              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
1755                 goto nla_put_failure;
1756
1757         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1758             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
1759             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
1760             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
1761             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1762                         rdev->devlist_generation ^
1763                         (cfg80211_rdev_list_generation << 2)))
1764                 goto nla_put_failure;
1765
1766         if (rdev->ops->get_channel) {
1767                 struct ieee80211_channel *chan;
1768                 enum nl80211_channel_type channel_type;
1769
1770                 chan = rdev->ops->get_channel(&rdev->wiphy, wdev,
1771                                               &channel_type);
1772                 if (chan &&
1773                     (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
1774                                  chan->center_freq) ||
1775                      nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
1776                                  channel_type)))
1777                         goto nla_put_failure;
1778         }
1779
1780         return genlmsg_end(msg, hdr);
1781
1782  nla_put_failure:
1783         genlmsg_cancel(msg, hdr);
1784         return -EMSGSIZE;
1785 }
1786
1787 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
1788 {
1789         int wp_idx = 0;
1790         int if_idx = 0;
1791         int wp_start = cb->args[0];
1792         int if_start = cb->args[1];
1793         struct cfg80211_registered_device *rdev;
1794         struct wireless_dev *wdev;
1795
1796         mutex_lock(&cfg80211_mutex);
1797         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1798                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1799                         continue;
1800                 if (wp_idx < wp_start) {
1801                         wp_idx++;
1802                         continue;
1803                 }
1804                 if_idx = 0;
1805
1806                 mutex_lock(&rdev->devlist_mtx);
1807                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
1808                         if (if_idx < if_start) {
1809                                 if_idx++;
1810                                 continue;
1811                         }
1812                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
1813                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
1814                                                rdev, wdev) < 0) {
1815                                 mutex_unlock(&rdev->devlist_mtx);
1816                                 goto out;
1817                         }
1818                         if_idx++;
1819                 }
1820                 mutex_unlock(&rdev->devlist_mtx);
1821
1822                 wp_idx++;
1823         }
1824  out:
1825         mutex_unlock(&cfg80211_mutex);
1826
1827         cb->args[0] = wp_idx;
1828         cb->args[1] = if_idx;
1829
1830         return skb->len;
1831 }
1832
1833 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
1834 {
1835         struct sk_buff *msg;
1836         struct cfg80211_registered_device *dev = info->user_ptr[0];
1837         struct wireless_dev *wdev = info->user_ptr[1];
1838
1839         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1840         if (!msg)
1841                 return -ENOMEM;
1842
1843         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
1844                                dev, wdev) < 0) {
1845                 nlmsg_free(msg);
1846                 return -ENOBUFS;
1847         }
1848
1849         return genlmsg_reply(msg, info);
1850 }
1851
1852 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
1853         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
1854         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
1855         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
1856         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
1857         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
1858 };
1859
1860 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
1861 {
1862         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
1863         int flag;
1864
1865         *mntrflags = 0;
1866
1867         if (!nla)
1868                 return -EINVAL;
1869
1870         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
1871                              nla, mntr_flags_policy))
1872                 return -EINVAL;
1873
1874         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
1875                 if (flags[flag])
1876                         *mntrflags |= (1<<flag);
1877
1878         return 0;
1879 }
1880
1881 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
1882                                struct net_device *netdev, u8 use_4addr,
1883                                enum nl80211_iftype iftype)
1884 {
1885         if (!use_4addr) {
1886                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
1887                         return -EBUSY;
1888                 return 0;
1889         }
1890
1891         switch (iftype) {
1892         case NL80211_IFTYPE_AP_VLAN:
1893                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
1894                         return 0;
1895                 break;
1896         case NL80211_IFTYPE_STATION:
1897                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
1898                         return 0;
1899                 break;
1900         default:
1901                 break;
1902         }
1903
1904         return -EOPNOTSUPP;
1905 }
1906
1907 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
1908 {
1909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1910         struct vif_params params;
1911         int err;
1912         enum nl80211_iftype otype, ntype;
1913         struct net_device *dev = info->user_ptr[1];
1914         u32 _flags, *flags = NULL;
1915         bool change = false;
1916
1917         memset(&params, 0, sizeof(params));
1918
1919         otype = ntype = dev->ieee80211_ptr->iftype;
1920
1921         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1922                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1923                 if (otype != ntype)
1924                         change = true;
1925                 if (ntype > NL80211_IFTYPE_MAX)
1926                         return -EINVAL;
1927         }
1928
1929         if (info->attrs[NL80211_ATTR_MESH_ID]) {
1930                 struct wireless_dev *wdev = dev->ieee80211_ptr;
1931
1932                 if (ntype != NL80211_IFTYPE_MESH_POINT)
1933                         return -EINVAL;
1934                 if (netif_running(dev))
1935                         return -EBUSY;
1936
1937                 wdev_lock(wdev);
1938                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
1939                              IEEE80211_MAX_MESH_ID_LEN);
1940                 wdev->mesh_id_up_len =
1941                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
1942                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
1943                        wdev->mesh_id_up_len);
1944                 wdev_unlock(wdev);
1945         }
1946
1947         if (info->attrs[NL80211_ATTR_4ADDR]) {
1948                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
1949                 change = true;
1950                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
1951                 if (err)
1952                         return err;
1953         } else {
1954                 params.use_4addr = -1;
1955         }
1956
1957         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
1958                 if (ntype != NL80211_IFTYPE_MONITOR)
1959                         return -EINVAL;
1960                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
1961                                           &_flags);
1962                 if (err)
1963                         return err;
1964
1965                 flags = &_flags;
1966                 change = true;
1967         }
1968
1969         if (change)
1970                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
1971         else
1972                 err = 0;
1973
1974         if (!err && params.use_4addr != -1)
1975                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
1976
1977         return err;
1978 }
1979
1980 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
1981 {
1982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1983         struct vif_params params;
1984         struct wireless_dev *wdev;
1985         struct sk_buff *msg;
1986         int err;
1987         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
1988         u32 flags;
1989
1990         memset(&params, 0, sizeof(params));
1991
1992         if (!info->attrs[NL80211_ATTR_IFNAME])
1993                 return -EINVAL;
1994
1995         if (info->attrs[NL80211_ATTR_IFTYPE]) {
1996                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
1997                 if (type > NL80211_IFTYPE_MAX)
1998                         return -EINVAL;
1999         }
2000
2001         if (!rdev->ops->add_virtual_intf ||
2002             !(rdev->wiphy.interface_modes & (1 << type)))
2003                 return -EOPNOTSUPP;
2004
2005         if (info->attrs[NL80211_ATTR_4ADDR]) {
2006                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2007                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2008                 if (err)
2009                         return err;
2010         }
2011
2012         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2013         if (!msg)
2014                 return -ENOMEM;
2015
2016         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2017                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2018                                   &flags);
2019         wdev = rdev->ops->add_virtual_intf(&rdev->wiphy,
2020                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2021                 type, err ? NULL : &flags, &params);
2022         if (IS_ERR(wdev)) {
2023                 nlmsg_free(msg);
2024                 return PTR_ERR(wdev);
2025         }
2026
2027         switch (type) {
2028         case NL80211_IFTYPE_MESH_POINT:
2029                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2030                         break;
2031                 wdev_lock(wdev);
2032                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2033                              IEEE80211_MAX_MESH_ID_LEN);
2034                 wdev->mesh_id_up_len =
2035                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2036                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2037                        wdev->mesh_id_up_len);
2038                 wdev_unlock(wdev);
2039                 break;
2040         case NL80211_IFTYPE_P2P_DEVICE:
2041                 /*
2042                  * P2P Device doesn't have a netdev, so doesn't go
2043                  * through the netdev notifier and must be added here
2044                  */
2045                 mutex_init(&wdev->mtx);
2046                 INIT_LIST_HEAD(&wdev->event_list);
2047                 spin_lock_init(&wdev->event_lock);
2048                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2049                 spin_lock_init(&wdev->mgmt_registrations_lock);
2050
2051                 mutex_lock(&rdev->devlist_mtx);
2052                 wdev->identifier = ++rdev->wdev_id;
2053                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2054                 rdev->devlist_generation++;
2055                 mutex_unlock(&rdev->devlist_mtx);
2056                 break;
2057         default:
2058                 break;
2059         }
2060
2061         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2062                                rdev, wdev) < 0) {
2063                 nlmsg_free(msg);
2064                 return -ENOBUFS;
2065         }
2066
2067         return genlmsg_reply(msg, info);
2068 }
2069
2070 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2071 {
2072         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2073         struct wireless_dev *wdev = info->user_ptr[1];
2074
2075         if (!rdev->ops->del_virtual_intf)
2076                 return -EOPNOTSUPP;
2077
2078         /*
2079          * If we remove a wireless device without a netdev then clear
2080          * user_ptr[1] so that nl80211_post_doit won't dereference it
2081          * to check if it needs to do dev_put(). Otherwise it crashes
2082          * since the wdev has been freed, unlike with a netdev where
2083          * we need the dev_put() for the netdev to really be freed.
2084          */
2085         if (!wdev->netdev)
2086                 info->user_ptr[1] = NULL;
2087
2088         return rdev->ops->del_virtual_intf(&rdev->wiphy, wdev);
2089 }
2090
2091 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2092 {
2093         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2094         struct net_device *dev = info->user_ptr[1];
2095         u16 noack_map;
2096
2097         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2098                 return -EINVAL;
2099
2100         if (!rdev->ops->set_noack_map)
2101                 return -EOPNOTSUPP;
2102
2103         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2104
2105         return rdev->ops->set_noack_map(&rdev->wiphy, dev, noack_map);
2106 }
2107
2108 struct get_key_cookie {
2109         struct sk_buff *msg;
2110         int error;
2111         int idx;
2112 };
2113
2114 static void get_key_callback(void *c, struct key_params *params)
2115 {
2116         struct nlattr *key;
2117         struct get_key_cookie *cookie = c;
2118
2119         if ((params->key &&
2120              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2121                      params->key_len, params->key)) ||
2122             (params->seq &&
2123              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2124                      params->seq_len, params->seq)) ||
2125             (params->cipher &&
2126              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2127                          params->cipher)))
2128                 goto nla_put_failure;
2129
2130         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2131         if (!key)
2132                 goto nla_put_failure;
2133
2134         if ((params->key &&
2135              nla_put(cookie->msg, NL80211_KEY_DATA,
2136                      params->key_len, params->key)) ||
2137             (params->seq &&
2138              nla_put(cookie->msg, NL80211_KEY_SEQ,
2139                      params->seq_len, params->seq)) ||
2140             (params->cipher &&
2141              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2142                          params->cipher)))
2143                 goto nla_put_failure;
2144
2145         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2146                 goto nla_put_failure;
2147
2148         nla_nest_end(cookie->msg, key);
2149
2150         return;
2151  nla_put_failure:
2152         cookie->error = 1;
2153 }
2154
2155 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2156 {
2157         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2158         int err;
2159         struct net_device *dev = info->user_ptr[1];
2160         u8 key_idx = 0;
2161         const u8 *mac_addr = NULL;
2162         bool pairwise;
2163         struct get_key_cookie cookie = {
2164                 .error = 0,
2165         };
2166         void *hdr;
2167         struct sk_buff *msg;
2168
2169         if (info->attrs[NL80211_ATTR_KEY_IDX])
2170                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2171
2172         if (key_idx > 5)
2173                 return -EINVAL;
2174
2175         if (info->attrs[NL80211_ATTR_MAC])
2176                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2177
2178         pairwise = !!mac_addr;
2179         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2180                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2181                 if (kt >= NUM_NL80211_KEYTYPES)
2182                         return -EINVAL;
2183                 if (kt != NL80211_KEYTYPE_GROUP &&
2184                     kt != NL80211_KEYTYPE_PAIRWISE)
2185                         return -EINVAL;
2186                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2187         }
2188
2189         if (!rdev->ops->get_key)
2190                 return -EOPNOTSUPP;
2191
2192         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2193         if (!msg)
2194                 return -ENOMEM;
2195
2196         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2197                              NL80211_CMD_NEW_KEY);
2198         if (IS_ERR(hdr))
2199                 return PTR_ERR(hdr);
2200
2201         cookie.msg = msg;
2202         cookie.idx = key_idx;
2203
2204         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2205             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2206                 goto nla_put_failure;
2207         if (mac_addr &&
2208             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2209                 goto nla_put_failure;
2210
2211         if (pairwise && mac_addr &&
2212             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2213                 return -ENOENT;
2214
2215         err = rdev->ops->get_key(&rdev->wiphy, dev, key_idx, pairwise,
2216                                  mac_addr, &cookie, get_key_callback);
2217
2218         if (err)
2219                 goto free_msg;
2220
2221         if (cookie.error)
2222                 goto nla_put_failure;
2223
2224         genlmsg_end(msg, hdr);
2225         return genlmsg_reply(msg, info);
2226
2227  nla_put_failure:
2228         err = -ENOBUFS;
2229  free_msg:
2230         nlmsg_free(msg);
2231         return err;
2232 }
2233
2234 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2235 {
2236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2237         struct key_parse key;
2238         int err;
2239         struct net_device *dev = info->user_ptr[1];
2240
2241         err = nl80211_parse_key(info, &key);
2242         if (err)
2243                 return err;
2244
2245         if (key.idx < 0)
2246                 return -EINVAL;
2247
2248         /* only support setting default key */
2249         if (!key.def && !key.defmgmt)
2250                 return -EINVAL;
2251
2252         wdev_lock(dev->ieee80211_ptr);
2253
2254         if (key.def) {
2255                 if (!rdev->ops->set_default_key) {
2256                         err = -EOPNOTSUPP;
2257                         goto out;
2258                 }
2259
2260                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2261                 if (err)
2262                         goto out;
2263
2264                 err = rdev->ops->set_default_key(&rdev->wiphy, dev, key.idx,
2265                                                  key.def_uni, key.def_multi);
2266
2267                 if (err)
2268                         goto out;
2269
2270 #ifdef CONFIG_CFG80211_WEXT
2271                 dev->ieee80211_ptr->wext.default_key = key.idx;
2272 #endif
2273         } else {
2274                 if (key.def_uni || !key.def_multi) {
2275                         err = -EINVAL;
2276                         goto out;
2277                 }
2278
2279                 if (!rdev->ops->set_default_mgmt_key) {
2280                         err = -EOPNOTSUPP;
2281                         goto out;
2282                 }
2283
2284                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2285                 if (err)
2286                         goto out;
2287
2288                 err = rdev->ops->set_default_mgmt_key(&rdev->wiphy,
2289                                                       dev, key.idx);
2290                 if (err)
2291                         goto out;
2292
2293 #ifdef CONFIG_CFG80211_WEXT
2294                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2295 #endif
2296         }
2297
2298  out:
2299         wdev_unlock(dev->ieee80211_ptr);
2300
2301         return err;
2302 }
2303
2304 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2305 {
2306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2307         int err;
2308         struct net_device *dev = info->user_ptr[1];
2309         struct key_parse key;
2310         const u8 *mac_addr = NULL;
2311
2312         err = nl80211_parse_key(info, &key);
2313         if (err)
2314                 return err;
2315
2316         if (!key.p.key)
2317                 return -EINVAL;
2318
2319         if (info->attrs[NL80211_ATTR_MAC])
2320                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2321
2322         if (key.type == -1) {
2323                 if (mac_addr)
2324                         key.type = NL80211_KEYTYPE_PAIRWISE;
2325                 else
2326                         key.type = NL80211_KEYTYPE_GROUP;
2327         }
2328
2329         /* for now */
2330         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2331             key.type != NL80211_KEYTYPE_GROUP)
2332                 return -EINVAL;
2333
2334         if (!rdev->ops->add_key)
2335                 return -EOPNOTSUPP;
2336
2337         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2338                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2339                                            mac_addr))
2340                 return -EINVAL;
2341
2342         wdev_lock(dev->ieee80211_ptr);
2343         err = nl80211_key_allowed(dev->ieee80211_ptr);
2344         if (!err)
2345                 err = rdev->ops->add_key(&rdev->wiphy, dev, key.idx,
2346                                          key.type == NL80211_KEYTYPE_PAIRWISE,
2347                                          mac_addr, &key.p);
2348         wdev_unlock(dev->ieee80211_ptr);
2349
2350         return err;
2351 }
2352
2353 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2354 {
2355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2356         int err;
2357         struct net_device *dev = info->user_ptr[1];
2358         u8 *mac_addr = NULL;
2359         struct key_parse key;
2360
2361         err = nl80211_parse_key(info, &key);
2362         if (err)
2363                 return err;
2364
2365         if (info->attrs[NL80211_ATTR_MAC])
2366                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2367
2368         if (key.type == -1) {
2369                 if (mac_addr)
2370                         key.type = NL80211_KEYTYPE_PAIRWISE;
2371                 else
2372                         key.type = NL80211_KEYTYPE_GROUP;
2373         }
2374
2375         /* for now */
2376         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2377             key.type != NL80211_KEYTYPE_GROUP)
2378                 return -EINVAL;
2379
2380         if (!rdev->ops->del_key)
2381                 return -EOPNOTSUPP;
2382
2383         wdev_lock(dev->ieee80211_ptr);
2384         err = nl80211_key_allowed(dev->ieee80211_ptr);
2385
2386         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2387             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2388                 err = -ENOENT;
2389
2390         if (!err)
2391                 err = rdev->ops->del_key(&rdev->wiphy, dev, key.idx,
2392                                          key.type == NL80211_KEYTYPE_PAIRWISE,
2393                                          mac_addr);
2394
2395 #ifdef CONFIG_CFG80211_WEXT
2396         if (!err) {
2397                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2398                         dev->ieee80211_ptr->wext.default_key = -1;
2399                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2400                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2401         }
2402 #endif
2403         wdev_unlock(dev->ieee80211_ptr);
2404
2405         return err;
2406 }
2407
2408 static int nl80211_parse_beacon(struct genl_info *info,
2409                                 struct cfg80211_beacon_data *bcn)
2410 {
2411         bool haveinfo = false;
2412
2413         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_BEACON_TAIL]) ||
2414             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]) ||
2415             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2416             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2417                 return -EINVAL;
2418
2419         memset(bcn, 0, sizeof(*bcn));
2420
2421         if (info->attrs[NL80211_ATTR_BEACON_HEAD]) {
2422                 bcn->head = nla_data(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2423                 bcn->head_len = nla_len(info->attrs[NL80211_ATTR_BEACON_HEAD]);
2424                 if (!bcn->head_len)
2425                         return -EINVAL;
2426                 haveinfo = true;
2427         }
2428
2429         if (info->attrs[NL80211_ATTR_BEACON_TAIL]) {
2430                 bcn->tail = nla_data(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2431                 bcn->tail_len =
2432                     nla_len(info->attrs[NL80211_ATTR_BEACON_TAIL]);
2433                 haveinfo = true;
2434         }
2435
2436         if (!haveinfo)
2437                 return -EINVAL;
2438
2439         if (info->attrs[NL80211_ATTR_IE]) {
2440                 bcn->beacon_ies = nla_data(info->attrs[NL80211_ATTR_IE]);
2441                 bcn->beacon_ies_len = nla_len(info->attrs[NL80211_ATTR_IE]);
2442         }
2443
2444         if (info->attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2445                 bcn->proberesp_ies =
2446                         nla_data(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2447                 bcn->proberesp_ies_len =
2448                         nla_len(info->attrs[NL80211_ATTR_IE_PROBE_RESP]);
2449         }
2450
2451         if (info->attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
2452                 bcn->assocresp_ies =
2453                         nla_data(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2454                 bcn->assocresp_ies_len =
2455                         nla_len(info->attrs[NL80211_ATTR_IE_ASSOC_RESP]);
2456         }
2457
2458         if (info->attrs[NL80211_ATTR_PROBE_RESP]) {
2459                 bcn->probe_resp =
2460                         nla_data(info->attrs[NL80211_ATTR_PROBE_RESP]);
2461                 bcn->probe_resp_len =
2462                         nla_len(info->attrs[NL80211_ATTR_PROBE_RESP]);
2463         }
2464
2465         return 0;
2466 }
2467
2468 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
2469                                    struct cfg80211_ap_settings *params)
2470 {
2471         struct wireless_dev *wdev;
2472         bool ret = false;
2473
2474         mutex_lock(&rdev->devlist_mtx);
2475
2476         list_for_each_entry(wdev, &rdev->wdev_list, list) {
2477                 if (wdev->iftype != NL80211_IFTYPE_AP &&
2478                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
2479                         continue;
2480
2481                 if (!wdev->preset_chan)
2482                         continue;
2483
2484                 params->channel = wdev->preset_chan;
2485                 params->channel_type = wdev->preset_chantype;
2486                 ret = true;
2487                 break;
2488         }
2489
2490         mutex_unlock(&rdev->devlist_mtx);
2491
2492         return ret;
2493 }
2494
2495 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
2496                                     enum nl80211_auth_type auth_type,
2497                                     enum nl80211_commands cmd)
2498 {
2499         if (auth_type > NL80211_AUTHTYPE_MAX)
2500                 return false;
2501
2502         switch (cmd) {
2503         case NL80211_CMD_AUTHENTICATE:
2504                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
2505                     auth_type == NL80211_AUTHTYPE_SAE)
2506                         return false;
2507                 return true;
2508         case NL80211_CMD_CONNECT:
2509         case NL80211_CMD_START_AP:
2510                 /* SAE not supported yet */
2511                 if (auth_type == NL80211_AUTHTYPE_SAE)
2512                         return false;
2513                 return true;
2514         default:
2515                 return false;
2516         }
2517 }
2518
2519 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
2520 {
2521         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2522         struct net_device *dev = info->user_ptr[1];
2523         struct wireless_dev *wdev = dev->ieee80211_ptr;
2524         struct cfg80211_ap_settings params;
2525         int err;
2526
2527         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2528             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2529                 return -EOPNOTSUPP;
2530
2531         if (!rdev->ops->start_ap)
2532                 return -EOPNOTSUPP;
2533
2534         if (wdev->beacon_interval)
2535                 return -EALREADY;
2536
2537         memset(&params, 0, sizeof(params));
2538
2539         /* these are required for START_AP */
2540         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
2541             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
2542             !info->attrs[NL80211_ATTR_BEACON_HEAD])
2543                 return -EINVAL;
2544
2545         err = nl80211_parse_beacon(info, &params.beacon);
2546         if (err)
2547                 return err;
2548
2549         params.beacon_interval =
2550                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
2551         params.dtim_period =
2552                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
2553
2554         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
2555         if (err)
2556                 return err;
2557
2558         /*
2559          * In theory, some of these attributes should be required here
2560          * but since they were not used when the command was originally
2561          * added, keep them optional for old user space programs to let
2562          * them continue to work with drivers that do not need the
2563          * additional information -- drivers must check!
2564          */
2565         if (info->attrs[NL80211_ATTR_SSID]) {
2566                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
2567                 params.ssid_len =
2568                         nla_len(info->attrs[NL80211_ATTR_SSID]);
2569                 if (params.ssid_len == 0 ||
2570                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
2571                         return -EINVAL;
2572         }
2573
2574         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
2575                 params.hidden_ssid = nla_get_u32(
2576                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
2577                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
2578                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
2579                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
2580                         return -EINVAL;
2581         }
2582
2583         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
2584
2585         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
2586                 params.auth_type = nla_get_u32(
2587                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
2588                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
2589                                              NL80211_CMD_START_AP))
2590                         return -EINVAL;
2591         } else
2592                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
2593
2594         err = nl80211_crypto_settings(rdev, info, &params.crypto,
2595                                       NL80211_MAX_NR_CIPHER_SUITES);
2596         if (err)
2597                 return err;
2598
2599         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
2600                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
2601                         return -EOPNOTSUPP;
2602                 params.inactivity_timeout = nla_get_u16(
2603                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
2604         }
2605
2606         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2607                 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
2608
2609                 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
2610                     !nl80211_valid_channel_type(info, &channel_type))
2611                         return -EINVAL;
2612
2613                 params.channel = rdev_freq_to_chan(rdev,
2614                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
2615                         channel_type);
2616                 if (!params.channel)
2617                         return -EINVAL;
2618                 params.channel_type = channel_type;
2619         } else if (wdev->preset_chan) {
2620                 params.channel = wdev->preset_chan;
2621                 params.channel_type = wdev->preset_chantype;
2622         } else if (!nl80211_get_ap_channel(rdev, &params))
2623                 return -EINVAL;
2624
2625         if (!cfg80211_can_beacon_sec_chan(&rdev->wiphy, params.channel,
2626                                           params.channel_type))
2627                 return -EINVAL;
2628
2629         mutex_lock(&rdev->devlist_mtx);
2630         err = cfg80211_can_use_chan(rdev, wdev, params.channel,
2631                                     CHAN_MODE_SHARED);
2632         mutex_unlock(&rdev->devlist_mtx);
2633
2634         if (err)
2635                 return err;
2636
2637         err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
2638         if (!err) {
2639                 wdev->preset_chan = params.channel;
2640                 wdev->preset_chantype = params.channel_type;
2641                 wdev->beacon_interval = params.beacon_interval;
2642                 wdev->channel = params.channel;
2643         }
2644         return err;
2645 }
2646
2647 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
2648 {
2649         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2650         struct net_device *dev = info->user_ptr[1];
2651         struct wireless_dev *wdev = dev->ieee80211_ptr;
2652         struct cfg80211_beacon_data params;
2653         int err;
2654
2655         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2656             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2657                 return -EOPNOTSUPP;
2658
2659         if (!rdev->ops->change_beacon)
2660                 return -EOPNOTSUPP;
2661
2662         if (!wdev->beacon_interval)
2663                 return -EINVAL;
2664
2665         err = nl80211_parse_beacon(info, &params);
2666         if (err)
2667                 return err;
2668
2669         return rdev->ops->change_beacon(&rdev->wiphy, dev, &params);
2670 }
2671
2672 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
2673 {
2674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2675         struct net_device *dev = info->user_ptr[1];
2676
2677         return cfg80211_stop_ap(rdev, dev);
2678 }
2679
2680 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
2681         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
2682         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
2683         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
2684         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
2685         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
2686         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
2687 };
2688
2689 static int parse_station_flags(struct genl_info *info,
2690                                enum nl80211_iftype iftype,
2691                                struct station_parameters *params)
2692 {
2693         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
2694         struct nlattr *nla;
2695         int flag;
2696
2697         /*
2698          * Try parsing the new attribute first so userspace
2699          * can specify both for older kernels.
2700          */
2701         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
2702         if (nla) {
2703                 struct nl80211_sta_flag_update *sta_flags;
2704
2705                 sta_flags = nla_data(nla);
2706                 params->sta_flags_mask = sta_flags->mask;
2707                 params->sta_flags_set = sta_flags->set;
2708                 if ((params->sta_flags_mask |
2709                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
2710                         return -EINVAL;
2711                 return 0;
2712         }
2713
2714         /* if present, parse the old attribute */
2715
2716         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
2717         if (!nla)
2718                 return 0;
2719
2720         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
2721                              nla, sta_flags_policy))
2722                 return -EINVAL;
2723
2724         /*
2725          * Only allow certain flags for interface types so that
2726          * other attributes are silently ignored. Remember that
2727          * this is backward compatibility code with old userspace
2728          * and shouldn't be hit in other cases anyway.
2729          */
2730         switch (iftype) {
2731         case NL80211_IFTYPE_AP:
2732         case NL80211_IFTYPE_AP_VLAN:
2733         case NL80211_IFTYPE_P2P_GO:
2734                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2735                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2736                                          BIT(NL80211_STA_FLAG_WME) |
2737                                          BIT(NL80211_STA_FLAG_MFP);
2738                 break;
2739         case NL80211_IFTYPE_P2P_CLIENT:
2740         case NL80211_IFTYPE_STATION:
2741                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2742                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
2743                 break;
2744         case NL80211_IFTYPE_MESH_POINT:
2745                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2746                                          BIT(NL80211_STA_FLAG_MFP) |
2747                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
2748         default:
2749                 return -EINVAL;
2750         }
2751
2752         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
2753                 if (flags[flag]) {
2754                         params->sta_flags_set |= (1<<flag);
2755
2756                         /* no longer support new API additions in old API */
2757                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
2758                                 return -EINVAL;
2759                 }
2760         }
2761
2762         return 0;
2763 }
2764
2765 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
2766                                  int attr)
2767 {
2768         struct nlattr *rate;
2769         u32 bitrate;
2770         u16 bitrate_compat;
2771
2772         rate = nla_nest_start(msg, attr);
2773         if (!rate)
2774                 goto nla_put_failure;
2775
2776         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
2777         bitrate = cfg80211_calculate_bitrate(info);
2778         /* report 16-bit bitrate only if we can */
2779         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
2780         if ((bitrate > 0 &&
2781              nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) ||
2782             (bitrate_compat > 0 &&
2783              nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) ||
2784             ((info->flags & RATE_INFO_FLAGS_MCS) &&
2785              nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) ||
2786             ((info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) &&
2787              nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) ||
2788             ((info->flags & RATE_INFO_FLAGS_SHORT_GI) &&
2789              nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)))
2790                 goto nla_put_failure;
2791
2792         nla_nest_end(msg, rate);
2793         return true;
2794
2795 nla_put_failure:
2796         return false;
2797 }
2798
2799 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
2800                                 int flags,
2801                                 struct cfg80211_registered_device *rdev,
2802                                 struct net_device *dev,
2803                                 const u8 *mac_addr, struct station_info *sinfo)
2804 {
2805         void *hdr;
2806         struct nlattr *sinfoattr, *bss_param;
2807
2808         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
2809         if (!hdr)
2810                 return -1;
2811
2812         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2813             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
2814             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
2815                 goto nla_put_failure;
2816
2817         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
2818         if (!sinfoattr)
2819                 goto nla_put_failure;
2820         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
2821             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
2822                         sinfo->connected_time))
2823                 goto nla_put_failure;
2824         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
2825             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
2826                         sinfo->inactive_time))
2827                 goto nla_put_failure;
2828         if ((sinfo->filled & STATION_INFO_RX_BYTES) &&
2829             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
2830                         sinfo->rx_bytes))
2831                 goto nla_put_failure;
2832         if ((sinfo->filled & STATION_INFO_TX_BYTES) &&
2833             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
2834                         sinfo->tx_bytes))
2835                 goto nla_put_failure;
2836         if ((sinfo->filled & STATION_INFO_LLID) &&
2837             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
2838                 goto nla_put_failure;
2839         if ((sinfo->filled & STATION_INFO_PLID) &&
2840             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
2841                 goto nla_put_failure;
2842         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
2843             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
2844                        sinfo->plink_state))
2845                 goto nla_put_failure;
2846         switch (rdev->wiphy.signal_type) {
2847         case CFG80211_SIGNAL_TYPE_MBM:
2848                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
2849                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
2850                                sinfo->signal))
2851                         goto nla_put_failure;
2852                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
2853                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
2854                                sinfo->signal_avg))
2855                         goto nla_put_failure;
2856                 break;
2857         default:
2858                 break;
2859         }
2860         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
2861                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
2862                                           NL80211_STA_INFO_TX_BITRATE))
2863                         goto nla_put_failure;
2864         }
2865         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
2866                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
2867                                           NL80211_STA_INFO_RX_BITRATE))
2868                         goto nla_put_failure;
2869         }
2870         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
2871             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
2872                         sinfo->rx_packets))
2873                 goto nla_put_failure;
2874         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
2875             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
2876                         sinfo->tx_packets))
2877                 goto nla_put_failure;
2878         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
2879             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
2880                         sinfo->tx_retries))
2881                 goto nla_put_failure;
2882         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
2883             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
2884                         sinfo->tx_failed))
2885                 goto nla_put_failure;
2886         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
2887             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
2888                         sinfo->beacon_loss_count))
2889                 goto nla_put_failure;
2890         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
2891                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
2892                 if (!bss_param)
2893                         goto nla_put_failure;
2894
2895                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
2896                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
2897                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
2898                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
2899                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
2900                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
2901                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
2902                                sinfo->bss_param.dtim_period) ||
2903                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
2904                                 sinfo->bss_param.beacon_interval))
2905                         goto nla_put_failure;
2906
2907                 nla_nest_end(msg, bss_param);
2908         }
2909         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
2910             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
2911                     sizeof(struct nl80211_sta_flag_update),
2912                     &sinfo->sta_flags))
2913                 goto nla_put_failure;
2914         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
2915                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
2916                             sinfo->t_offset))
2917                 goto nla_put_failure;
2918         nla_nest_end(msg, sinfoattr);
2919
2920         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
2921             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
2922                     sinfo->assoc_req_ies))
2923                 goto nla_put_failure;
2924
2925         return genlmsg_end(msg, hdr);
2926
2927  nla_put_failure:
2928         genlmsg_cancel(msg, hdr);
2929         return -EMSGSIZE;
2930 }
2931
2932 static int nl80211_dump_station(struct sk_buff *skb,
2933                                 struct netlink_callback *cb)
2934 {
2935         struct station_info sinfo;
2936         struct cfg80211_registered_device *dev;
2937         struct net_device *netdev;
2938         u8 mac_addr[ETH_ALEN];
2939         int sta_idx = cb->args[1];
2940         int err;
2941
2942         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
2943         if (err)
2944                 return err;
2945
2946         if (!dev->ops->dump_station) {
2947                 err = -EOPNOTSUPP;
2948                 goto out_err;
2949         }
2950
2951         while (1) {
2952                 memset(&sinfo, 0, sizeof(sinfo));
2953                 err = dev->ops->dump_station(&dev->wiphy, netdev, sta_idx,
2954                                              mac_addr, &sinfo);
2955                 if (err == -ENOENT)
2956                         break;
2957                 if (err)
2958                         goto out_err;
2959
2960                 if (nl80211_send_station(skb,
2961                                 NETLINK_CB(cb->skb).portid,
2962                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
2963                                 dev, netdev, mac_addr,
2964                                 &sinfo) < 0)
2965                         goto out;
2966
2967                 sta_idx++;
2968         }
2969
2970
2971  out:
2972         cb->args[1] = sta_idx;
2973         err = skb->len;
2974  out_err:
2975         nl80211_finish_netdev_dump(dev);
2976
2977         return err;
2978 }
2979
2980 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
2981 {
2982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2983         struct net_device *dev = info->user_ptr[1];
2984         struct station_info sinfo;
2985         struct sk_buff *msg;
2986         u8 *mac_addr = NULL;
2987         int err;
2988
2989         memset(&sinfo, 0, sizeof(sinfo));
2990
2991         if (!info->attrs[NL80211_ATTR_MAC])
2992                 return -EINVAL;
2993
2994         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2995
2996         if (!rdev->ops->get_station)
2997                 return -EOPNOTSUPP;
2998
2999         err = rdev->ops->get_station(&rdev->wiphy, dev, mac_addr, &sinfo);
3000         if (err)
3001                 return err;
3002
3003         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3004         if (!msg)
3005                 return -ENOMEM;
3006
3007         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3008                                  rdev, dev, mac_addr, &sinfo) < 0) {
3009                 nlmsg_free(msg);
3010                 return -ENOBUFS;
3011         }
3012
3013         return genlmsg_reply(msg, info);
3014 }
3015
3016 /*
3017  * Get vlan interface making sure it is running and on the right wiphy.
3018  */
3019 static struct net_device *get_vlan(struct genl_info *info,
3020                                    struct cfg80211_registered_device *rdev)
3021 {
3022         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3023         struct net_device *v;
3024         int ret;
3025
3026         if (!vlanattr)
3027                 return NULL;
3028
3029         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3030         if (!v)
3031                 return ERR_PTR(-ENODEV);
3032
3033         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3034                 ret = -EINVAL;
3035                 goto error;
3036         }
3037
3038         if (!netif_running(v)) {
3039                 ret = -ENETDOWN;
3040                 goto error;
3041         }
3042
3043         return v;
3044  error:
3045         dev_put(v);
3046         return ERR_PTR(ret);
3047 }
3048
3049 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3050 {
3051         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3052         int err;
3053         struct net_device *dev = info->user_ptr[1];
3054         struct station_parameters params;
3055         u8 *mac_addr = NULL;
3056
3057         memset(&params, 0, sizeof(params));
3058
3059         params.listen_interval = -1;
3060         params.plink_state = -1;
3061
3062         if (info->attrs[NL80211_ATTR_STA_AID])
3063                 return -EINVAL;
3064
3065         if (!info->attrs[NL80211_ATTR_MAC])
3066                 return -EINVAL;
3067
3068         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3069
3070         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3071                 params.supported_rates =
3072                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3073                 params.supported_rates_len =
3074                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3075         }
3076
3077         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3078                 params.listen_interval =
3079                     nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3080
3081         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3082                 params.ht_capa =
3083                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3084
3085         if (!rdev->ops->change_station)
3086                 return -EOPNOTSUPP;
3087
3088         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3089                 return -EINVAL;
3090
3091         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3092                 params.plink_action =
3093                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3094
3095         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE])
3096                 params.plink_state =
3097                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3098
3099         switch (dev->ieee80211_ptr->iftype) {
3100         case NL80211_IFTYPE_AP:
3101         case NL80211_IFTYPE_AP_VLAN:
3102         case NL80211_IFTYPE_P2P_GO:
3103                 /* disallow mesh-specific things */
3104                 if (params.plink_action)
3105                         return -EINVAL;
3106
3107                 /* TDLS can't be set, ... */
3108                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3109                         return -EINVAL;
3110                 /*
3111                  * ... but don't bother the driver with it. This works around
3112                  * a hostapd/wpa_supplicant issue -- it always includes the
3113                  * TLDS_PEER flag in the mask even for AP mode.
3114                  */
3115                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3116
3117                 /* accept only the listed bits */
3118                 if (params.sta_flags_mask &
3119                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3120                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3121                                   BIT(NL80211_STA_FLAG_WME) |
3122                                   BIT(NL80211_STA_FLAG_MFP)))
3123                         return -EINVAL;
3124
3125                 /* must be last in here for error handling */
3126                 params.vlan = get_vlan(info, rdev);
3127                 if (IS_ERR(params.vlan))
3128                         return PTR_ERR(params.vlan);
3129                 break;
3130         case NL80211_IFTYPE_P2P_CLIENT:
3131         case NL80211_IFTYPE_STATION:
3132                 /*
3133                  * Don't allow userspace to change the TDLS_PEER flag,
3134                  * but silently ignore attempts to change it since we
3135                  * don't have state here to verify that it doesn't try
3136                  * to change the flag.
3137                  */
3138                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3139                 /* fall through */
3140         case NL80211_IFTYPE_ADHOC:
3141                 /* disallow things sta doesn't support */
3142                 if (params.plink_action)
3143                         return -EINVAL;
3144                 if (params.ht_capa)
3145                         return -EINVAL;
3146                 if (params.listen_interval >= 0)
3147                         return -EINVAL;
3148                 /* reject any changes other than AUTHORIZED */
3149                 if (params.sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3150                         return -EINVAL;
3151                 break;
3152         case NL80211_IFTYPE_MESH_POINT:
3153                 /* disallow things mesh doesn't support */
3154                 if (params.vlan)
3155                         return -EINVAL;
3156                 if (params.ht_capa)
3157                         return -EINVAL;
3158                 if (params.listen_interval >= 0)
3159                         return -EINVAL;
3160                 /*
3161                  * No special handling for TDLS here -- the userspace
3162                  * mesh code doesn't have this bug.
3163                  */
3164                 if (params.sta_flags_mask &
3165                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3166                                   BIT(NL80211_STA_FLAG_MFP) |
3167                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3168                         return -EINVAL;
3169                 break;
3170         default:
3171                 return -EOPNOTSUPP;
3172         }
3173
3174         /* be aware of params.vlan when changing code here */
3175
3176         err = rdev->ops->change_station(&rdev->wiphy, dev, mac_addr, &params);
3177
3178         if (params.vlan)
3179                 dev_put(params.vlan);
3180
3181         return err;
3182 }
3183
3184 static struct nla_policy
3185 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3186         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3187         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3188 };
3189
3190 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
3191 {
3192         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3193         int err;
3194         struct net_device *dev = info->user_ptr[1];
3195         struct station_parameters params;
3196         u8 *mac_addr = NULL;
3197
3198         memset(&params, 0, sizeof(params));
3199
3200         if (!info->attrs[NL80211_ATTR_MAC])
3201                 return -EINVAL;
3202
3203         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3204                 return -EINVAL;
3205
3206         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
3207                 return -EINVAL;
3208
3209         if (!info->attrs[NL80211_ATTR_STA_AID])
3210                 return -EINVAL;
3211
3212         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3213         params.supported_rates =
3214                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3215         params.supported_rates_len =
3216                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3217         params.listen_interval =
3218                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
3219
3220         params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
3221         if (!params.aid || params.aid > IEEE80211_MAX_AID)
3222                 return -EINVAL;
3223
3224         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3225                 params.ht_capa =
3226                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3227
3228         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3229                 params.vht_capa =
3230                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3231
3232         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
3233                 params.plink_action =
3234                     nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3235
3236         if (!rdev->ops->add_station)
3237                 return -EOPNOTSUPP;
3238
3239         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3240                 return -EINVAL;
3241
3242         switch (dev->ieee80211_ptr->iftype) {
3243         case NL80211_IFTYPE_AP:
3244         case NL80211_IFTYPE_AP_VLAN:
3245         case NL80211_IFTYPE_P2P_GO:
3246                 /* parse WME attributes if sta is WME capable */
3247                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
3248                     (params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)) &&
3249                     info->attrs[NL80211_ATTR_STA_WME]) {
3250                         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3251                         struct nlattr *nla;
3252
3253                         nla = info->attrs[NL80211_ATTR_STA_WME];
3254                         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3255                                                nl80211_sta_wme_policy);
3256                         if (err)
3257                                 return err;
3258
3259                         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3260                                 params.uapsd_queues =
3261                                      nla_get_u8(tb[NL80211_STA_WME_UAPSD_QUEUES]);
3262                         if (params.uapsd_queues &
3263                                         ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3264                                 return -EINVAL;
3265
3266                         if (tb[NL80211_STA_WME_MAX_SP])
3267                                 params.max_sp =
3268                                      nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3269
3270                         if (params.max_sp &
3271                                         ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3272                                 return -EINVAL;
3273
3274                         params.sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3275                 }
3276                 /* TDLS peers cannot be added */
3277                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3278                         return -EINVAL;
3279                 /* but don't bother the driver with it */
3280                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3281
3282                 /* must be last in here for error handling */
3283                 params.vlan = get_vlan(info, rdev);
3284                 if (IS_ERR(params.vlan))
3285                         return PTR_ERR(params.vlan);
3286                 break;
3287         case NL80211_IFTYPE_MESH_POINT:
3288                 /* TDLS peers cannot be added */
3289                 if (params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3290                         return -EINVAL;
3291                 break;
3292         case NL80211_IFTYPE_STATION:
3293                 /* Only TDLS peers can be added */
3294                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3295                         return -EINVAL;
3296                 /* Can only add if TDLS ... */
3297                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
3298                         return -EOPNOTSUPP;
3299                 /* ... with external setup is supported */
3300                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
3301                         return -EOPNOTSUPP;
3302                 break;
3303         default:
3304                 return -EOPNOTSUPP;
3305         }
3306
3307         /* be aware of params.vlan when changing code here */
3308
3309         err = rdev->ops->add_station(&rdev->wiphy, dev, mac_addr, &params);
3310
3311         if (params.vlan)
3312                 dev_put(params.vlan);
3313         return err;
3314 }
3315
3316 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
3317 {
3318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3319         struct net_device *dev = info->user_ptr[1];
3320         u8 *mac_addr = NULL;
3321
3322         if (info->attrs[NL80211_ATTR_MAC])
3323                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3324
3325         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3326             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3327             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
3328             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3329                 return -EINVAL;
3330
3331         if (!rdev->ops->del_station)
3332                 return -EOPNOTSUPP;
3333
3334         return rdev->ops->del_station(&rdev->wiphy, dev, mac_addr);
3335 }
3336
3337 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
3338                                 int flags, struct net_device *dev,
3339                                 u8 *dst, u8 *next_hop,
3340                                 struct mpath_info *pinfo)
3341 {
3342         void *hdr;
3343         struct nlattr *pinfoattr;
3344
3345         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3346         if (!hdr)
3347                 return -1;
3348
3349         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3350             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
3351             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
3352             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
3353                 goto nla_put_failure;
3354
3355         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
3356         if (!pinfoattr)
3357                 goto nla_put_failure;
3358         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
3359             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
3360                         pinfo->frame_qlen))
3361                 goto nla_put_failure;
3362         if (((pinfo->filled & MPATH_INFO_SN) &&
3363              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
3364             ((pinfo->filled & MPATH_INFO_METRIC) &&
3365              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
3366                          pinfo->metric)) ||
3367             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
3368              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
3369                          pinfo->exptime)) ||
3370             ((pinfo->filled & MPATH_INFO_FLAGS) &&
3371              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
3372                         pinfo->flags)) ||
3373             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
3374              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
3375                          pinfo->discovery_timeout)) ||
3376             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
3377              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
3378                         pinfo->discovery_retries)))
3379                 goto nla_put_failure;
3380
3381         nla_nest_end(msg, pinfoattr);
3382
3383         return genlmsg_end(msg, hdr);
3384
3385  nla_put_failure:
3386         genlmsg_cancel(msg, hdr);
3387         return -EMSGSIZE;
3388 }
3389
3390 static int nl80211_dump_mpath(struct sk_buff *skb,
3391                               struct netlink_callback *cb)
3392 {
3393         struct mpath_info pinfo;
3394         struct cfg80211_registered_device *dev;
3395         struct net_device *netdev;
3396         u8 dst[ETH_ALEN];
3397         u8 next_hop[ETH_ALEN];
3398         int path_idx = cb->args[1];
3399         int err;
3400
3401         err = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
3402         if (err)
3403                 return err;
3404
3405         if (!dev->ops->dump_mpath) {
3406                 err = -EOPNOTSUPP;
3407                 goto out_err;
3408         }
3409
3410         if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) {
3411                 err = -EOPNOTSUPP;
3412                 goto out_err;
3413         }
3414
3415         while (1) {
3416                 err = dev->ops->dump_mpath(&dev->wiphy, netdev, path_idx,
3417                                            dst, next_hop, &pinfo);
3418                 if (err == -ENOENT)
3419                         break;
3420                 if (err)
3421                         goto out_err;
3422
3423                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
3424                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
3425                                        netdev, dst, next_hop,
3426                                        &pinfo) < 0)
3427                         goto out;
3428
3429                 path_idx++;
3430         }
3431
3432
3433  out:
3434         cb->args[1] = path_idx;
3435         err = skb->len;
3436  out_err:
3437         nl80211_finish_netdev_dump(dev);
3438         return err;
3439 }
3440
3441 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
3442 {
3443         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3444         int err;
3445         struct net_device *dev = info->user_ptr[1];
3446         struct mpath_info pinfo;
3447         struct sk_buff *msg;
3448         u8 *dst = NULL;
3449         u8 next_hop[ETH_ALEN];
3450
3451         memset(&pinfo, 0, sizeof(pinfo));
3452
3453         if (!info->attrs[NL80211_ATTR_MAC])
3454                 return -EINVAL;
3455
3456         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3457
3458         if (!rdev->ops->get_mpath)
3459                 return -EOPNOTSUPP;
3460
3461         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3462                 return -EOPNOTSUPP;
3463
3464         err = rdev->ops->get_mpath(&rdev->wiphy, dev, dst, next_hop, &pinfo);
3465         if (err)
3466                 return err;
3467
3468         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3469         if (!msg)
3470                 return -ENOMEM;
3471
3472         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
3473                                  dev, dst, next_hop, &pinfo) < 0) {
3474                 nlmsg_free(msg);
3475                 return -ENOBUFS;
3476         }
3477
3478         return genlmsg_reply(msg, info);
3479 }
3480
3481 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
3482 {
3483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3484         struct net_device *dev = info->user_ptr[1];
3485         u8 *dst = NULL;
3486         u8 *next_hop = NULL;
3487
3488         if (!info->attrs[NL80211_ATTR_MAC])
3489                 return -EINVAL;
3490
3491         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3492                 return -EINVAL;
3493
3494         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3495         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3496
3497         if (!rdev->ops->change_mpath)
3498                 return -EOPNOTSUPP;
3499
3500         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3501                 return -EOPNOTSUPP;
3502
3503         return rdev->ops->change_mpath(&rdev->wiphy, dev, dst, next_hop);
3504 }
3505
3506 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
3507 {
3508         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3509         struct net_device *dev = info->user_ptr[1];
3510         u8 *dst = NULL;
3511         u8 *next_hop = NULL;
3512
3513         if (!info->attrs[NL80211_ATTR_MAC])
3514                 return -EINVAL;
3515
3516         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
3517                 return -EINVAL;
3518
3519         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3520         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
3521
3522         if (!rdev->ops->add_mpath)
3523                 return -EOPNOTSUPP;
3524
3525         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
3526                 return -EOPNOTSUPP;
3527
3528         return rdev->ops->add_mpath(&rdev->wiphy, dev, dst, next_hop);
3529 }
3530
3531 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
3532 {
3533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3534         struct net_device *dev = info->user_ptr[1];
3535         u8 *dst = NULL;
3536
3537         if (info->attrs[NL80211_ATTR_MAC])
3538                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
3539
3540         if (!rdev->ops->del_mpath)
3541                 return -EOPNOTSUPP;
3542
3543         return rdev->ops->del_mpath(&rdev->wiphy, dev, dst);
3544 }
3545
3546 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
3547 {
3548         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3549         struct net_device *dev = info->user_ptr[1];
3550         struct bss_parameters params;
3551
3552         memset(&params, 0, sizeof(params));
3553         /* default to not changing parameters */
3554         params.use_cts_prot = -1;
3555         params.use_short_preamble = -1;
3556         params.use_short_slot_time = -1;
3557         params.ap_isolate = -1;
3558         params.ht_opmode = -1;
3559
3560         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
3561                 params.use_cts_prot =
3562                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
3563         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
3564                 params.use_short_preamble =
3565                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
3566         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
3567                 params.use_short_slot_time =
3568                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
3569         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
3570                 params.basic_rates =
3571                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3572                 params.basic_rates_len =
3573                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
3574         }
3575         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
3576                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
3577         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
3578                 params.ht_opmode =
3579                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
3580
3581         if (!rdev->ops->change_bss)
3582                 return -EOPNOTSUPP;
3583
3584         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3585             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3586                 return -EOPNOTSUPP;
3587
3588         return rdev->ops->change_bss(&rdev->wiphy, dev, &params);
3589 }
3590
3591 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
3592         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
3593         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
3594         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
3595         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
3596         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
3597         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
3598 };
3599
3600 static int parse_reg_rule(struct nlattr *tb[],
3601         struct ieee80211_reg_rule *reg_rule)
3602 {
3603         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
3604         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
3605
3606         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
3607                 return -EINVAL;
3608         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
3609                 return -EINVAL;
3610         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
3611                 return -EINVAL;
3612         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
3613                 return -EINVAL;
3614         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
3615                 return -EINVAL;
3616
3617         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
3618
3619         freq_range->start_freq_khz =
3620                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
3621         freq_range->end_freq_khz =
3622                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
3623         freq_range->max_bandwidth_khz =
3624                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
3625
3626         power_rule->max_eirp =
3627                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
3628
3629         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
3630                 power_rule->max_antenna_gain =
3631                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
3632
3633         return 0;
3634 }
3635
3636 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
3637 {
3638         int r;
3639         char *data = NULL;
3640         enum nl80211_user_reg_hint_type user_reg_hint_type;
3641
3642         /*
3643          * You should only get this when cfg80211 hasn't yet initialized
3644          * completely when built-in to the kernel right between the time
3645          * window between nl80211_init() and regulatory_init(), if that is
3646          * even possible.
3647          */
3648         mutex_lock(&cfg80211_mutex);
3649         if (unlikely(!cfg80211_regdomain)) {
3650                 mutex_unlock(&cfg80211_mutex);
3651                 return -EINPROGRESS;
3652         }
3653         mutex_unlock(&cfg80211_mutex);
3654
3655         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
3656                 return -EINVAL;
3657
3658         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
3659
3660         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
3661                 user_reg_hint_type =
3662                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
3663         else
3664                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
3665
3666         switch (user_reg_hint_type) {
3667         case NL80211_USER_REG_HINT_USER:
3668         case NL80211_USER_REG_HINT_CELL_BASE:
3669                 break;
3670         default:
3671                 return -EINVAL;
3672         }
3673
3674         r = regulatory_hint_user(data, user_reg_hint_type);
3675
3676         return r;
3677 }
3678
3679 static int nl80211_get_mesh_config(struct sk_buff *skb,
3680                                    struct genl_info *info)
3681 {
3682         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3683         struct net_device *dev = info->user_ptr[1];
3684         struct wireless_dev *wdev = dev->ieee80211_ptr;
3685         struct mesh_config cur_params;
3686         int err = 0;
3687         void *hdr;
3688         struct nlattr *pinfoattr;
3689         struct sk_buff *msg;
3690
3691         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3692                 return -EOPNOTSUPP;
3693
3694         if (!rdev->ops->get_mesh_config)
3695                 return -EOPNOTSUPP;
3696
3697         wdev_lock(wdev);
3698         /* If not connected, get default parameters */
3699         if (!wdev->mesh_id_len)
3700                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
3701         else
3702                 err = rdev->ops->get_mesh_config(&rdev->wiphy, dev,
3703                                                  &cur_params);
3704         wdev_unlock(wdev);
3705
3706         if (err)
3707                 return err;
3708
3709         /* Draw up a netlink message to send back */
3710         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3711         if (!msg)
3712                 return -ENOMEM;
3713         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3714                              NL80211_CMD_GET_MESH_CONFIG);
3715         if (!hdr)
3716                 goto out;
3717         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
3718         if (!pinfoattr)
3719                 goto nla_put_failure;
3720         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3721             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
3722                         cur_params.dot11MeshRetryTimeout) ||
3723             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3724                         cur_params.dot11MeshConfirmTimeout) ||
3725             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
3726                         cur_params.dot11MeshHoldingTimeout) ||
3727             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
3728                         cur_params.dot11MeshMaxPeerLinks) ||
3729             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
3730                        cur_params.dot11MeshMaxRetries) ||
3731             nla_put_u8(msg, NL80211_MESHCONF_TTL,
3732                        cur_params.dot11MeshTTL) ||
3733             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
3734                        cur_params.element_ttl) ||
3735             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3736                        cur_params.auto_open_plinks) ||
3737             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3738                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
3739             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3740                        cur_params.dot11MeshHWMPmaxPREQretries) ||
3741             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
3742                         cur_params.path_refresh_time) ||
3743             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3744                         cur_params.min_discovery_timeout) ||
3745             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3746                         cur_params.dot11MeshHWMPactivePathTimeout) ||
3747             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3748                         cur_params.dot11MeshHWMPpreqMinInterval) ||
3749             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3750                         cur_params.dot11MeshHWMPperrMinInterval) ||
3751             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3752                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
3753             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
3754                        cur_params.dot11MeshHWMPRootMode) ||
3755             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3756                         cur_params.dot11MeshHWMPRannInterval) ||
3757             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3758                        cur_params.dot11MeshGateAnnouncementProtocol) ||
3759             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
3760                        cur_params.dot11MeshForwarding) ||
3761             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
3762                         cur_params.rssi_threshold) ||
3763             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
3764                         cur_params.ht_opmode) ||
3765             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3766                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
3767             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3768                         cur_params.dot11MeshHWMProotInterval) ||
3769             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3770                         cur_params.dot11MeshHWMPconfirmationInterval))
3771                 goto nla_put_failure;
3772         nla_nest_end(msg, pinfoattr);
3773         genlmsg_end(msg, hdr);
3774         return genlmsg_reply(msg, info);
3775
3776  nla_put_failure:
3777         genlmsg_cancel(msg, hdr);
3778  out:
3779         nlmsg_free(msg);
3780         return -ENOBUFS;
3781 }
3782
3783 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
3784         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
3785         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
3786         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
3787         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
3788         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
3789         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
3790         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
3791         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
3792         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
3793         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
3794         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
3795         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
3796         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
3797         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
3798         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
3799         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
3800         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
3801         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
3802         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
3803         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
3804         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
3805         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
3806         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
3807         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
3808         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
3809 };
3810
3811 static const struct nla_policy
3812         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
3813         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
3814         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
3815         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
3816         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
3817         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
3818                                     .len = IEEE80211_MAX_DATA_LEN },
3819         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
3820 };
3821
3822 static int nl80211_parse_mesh_config(struct genl_info *info,
3823                                      struct mesh_config *cfg,
3824                                      u32 *mask_out)
3825 {
3826         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
3827         u32 mask = 0;
3828
3829 #define FILL_IN_MESH_PARAM_IF_SET(table, cfg, param, mask, attr_num, nla_fn) \
3830 do {\
3831         if (table[attr_num]) {\
3832                 cfg->param = nla_fn(table[attr_num]); \
3833                 mask |= (1 << (attr_num - 1)); \
3834         } \
3835 } while (0);\
3836
3837
3838         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
3839                 return -EINVAL;
3840         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
3841                              info->attrs[NL80211_ATTR_MESH_CONFIG],
3842                              nl80211_meshconf_params_policy))
3843                 return -EINVAL;
3844
3845         /* This makes sure that there aren't more than 32 mesh config
3846          * parameters (otherwise our bitfield scheme would not work.) */
3847         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
3848
3849         /* Fill in the params struct */
3850         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout,
3851                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
3852                                   nla_get_u16);
3853         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout,
3854                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
3855                                   nla_get_u16);
3856         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout,
3857                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
3858                                   nla_get_u16);
3859         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks,
3860                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
3861                                   nla_get_u16);
3862         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries,
3863                                   mask, NL80211_MESHCONF_MAX_RETRIES,
3864                                   nla_get_u8);
3865         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL,
3866                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
3867         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl,
3868                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
3869                                   nla_get_u8);
3870         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks,
3871                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
3872                                   nla_get_u8);
3873         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, mask,
3874                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
3875                                   nla_get_u32);
3876         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries,
3877                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
3878                                   nla_get_u8);
3879         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time,
3880                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
3881                                   nla_get_u32);
3882         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout,
3883                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
3884                                   nla_get_u16);
3885         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, mask,
3886                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
3887                                   nla_get_u32);
3888         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
3889                                   mask, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
3890                                   nla_get_u16);
3891         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
3892                                   mask, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
3893                                   nla_get_u16);
3894         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3895                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
3896                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
3897                                   nla_get_u16);
3898         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
3899                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
3900         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
3901                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
3902                                   nla_get_u16);
3903         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3904                                   dot11MeshGateAnnouncementProtocol, mask,
3905                                   NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
3906                                   nla_get_u8);
3907         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding,
3908                                   mask, NL80211_MESHCONF_FORWARDING,
3909                                   nla_get_u8);
3910         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold,
3911                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
3912                                   nla_get_u32);
3913         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode,
3914                                   mask, NL80211_MESHCONF_HT_OPMODE,
3915                                   nla_get_u16);
3916         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
3917                                   mask,
3918                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
3919                                   nla_get_u32);
3920         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval,
3921                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
3922                                   nla_get_u16);
3923         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
3924                                   dot11MeshHWMPconfirmationInterval, mask,
3925                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
3926                                   nla_get_u16);
3927         if (mask_out)
3928                 *mask_out = mask;
3929
3930         return 0;
3931
3932 #undef FILL_IN_MESH_PARAM_IF_SET
3933 }
3934
3935 static int nl80211_parse_mesh_setup(struct genl_info *info,
3936                                      struct mesh_setup *setup)
3937 {
3938         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
3939
3940         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
3941                 return -EINVAL;
3942         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
3943                              info->attrs[NL80211_ATTR_MESH_SETUP],
3944                              nl80211_mesh_setup_params_policy))
3945                 return -EINVAL;
3946
3947         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
3948                 setup->sync_method =
3949                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
3950                  IEEE80211_SYNC_METHOD_VENDOR :
3951                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
3952
3953         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
3954                 setup->path_sel_proto =
3955                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
3956                  IEEE80211_PATH_PROTOCOL_VENDOR :
3957                  IEEE80211_PATH_PROTOCOL_HWMP;
3958
3959         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
3960                 setup->path_metric =
3961                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
3962                  IEEE80211_PATH_METRIC_VENDOR :
3963                  IEEE80211_PATH_METRIC_AIRTIME;
3964
3965
3966         if (tb[NL80211_MESH_SETUP_IE]) {
3967                 struct nlattr *ieattr =
3968                         tb[NL80211_MESH_SETUP_IE];
3969                 if (!is_valid_ie_attr(ieattr))
3970                         return -EINVAL;
3971                 setup->ie = nla_data(ieattr);
3972                 setup->ie_len = nla_len(ieattr);
3973         }
3974         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
3975         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
3976
3977         return 0;
3978 }
3979
3980 static int nl80211_update_mesh_config(struct sk_buff *skb,
3981                                       struct genl_info *info)
3982 {
3983         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3984         struct net_device *dev = info->user_ptr[1];
3985         struct wireless_dev *wdev = dev->ieee80211_ptr;
3986         struct mesh_config cfg;
3987         u32 mask;
3988         int err;
3989
3990         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
3991                 return -EOPNOTSUPP;
3992
3993         if (!rdev->ops->update_mesh_config)
3994                 return -EOPNOTSUPP;
3995
3996         err = nl80211_parse_mesh_config(info, &cfg, &mask);
3997         if (err)
3998                 return err;
3999
4000         wdev_lock(wdev);
4001         if (!wdev->mesh_id_len)
4002                 err = -ENOLINK;
4003
4004         if (!err)
4005                 err = rdev->ops->update_mesh_config(&rdev->wiphy, dev,
4006                                                     mask, &cfg);
4007
4008         wdev_unlock(wdev);
4009
4010         return err;
4011 }
4012
4013 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4014 {
4015         struct sk_buff *msg;
4016         void *hdr = NULL;
4017         struct nlattr *nl_reg_rules;
4018         unsigned int i;
4019         int err = -EINVAL;
4020
4021         mutex_lock(&cfg80211_mutex);
4022
4023         if (!cfg80211_regdomain)
4024                 goto out;
4025
4026         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4027         if (!msg) {
4028                 err = -ENOBUFS;
4029                 goto out;
4030         }
4031
4032         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4033                              NL80211_CMD_GET_REG);
4034         if (!hdr)
4035                 goto put_failure;
4036
4037         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
4038                            cfg80211_regdomain->alpha2) ||
4039             (cfg80211_regdomain->dfs_region &&
4040              nla_put_u8(msg, NL80211_ATTR_DFS_REGION,
4041                         cfg80211_regdomain->dfs_region)))
4042                 goto nla_put_failure;
4043
4044         if (reg_last_request_cell_base() &&
4045             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4046                         NL80211_USER_REG_HINT_CELL_BASE))
4047                 goto nla_put_failure;
4048
4049         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4050         if (!nl_reg_rules)
4051                 goto nla_put_failure;
4052
4053         for (i = 0; i < cfg80211_regdomain->n_reg_rules; i++) {
4054                 struct nlattr *nl_reg_rule;
4055                 const struct ieee80211_reg_rule *reg_rule;
4056                 const struct ieee80211_freq_range *freq_range;
4057                 const struct ieee80211_power_rule *power_rule;
4058
4059                 reg_rule = &cfg80211_regdomain->reg_rules[i];
4060                 freq_range = &reg_rule->freq_range;
4061                 power_rule = &reg_rule->power_rule;
4062
4063                 nl_reg_rule = nla_nest_start(msg, i);
4064                 if (!nl_reg_rule)
4065                         goto nla_put_failure;
4066
4067                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4068                                 reg_rule->flags) ||
4069                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4070                                 freq_range->start_freq_khz) ||
4071                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4072                                 freq_range->end_freq_khz) ||
4073                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4074                                 freq_range->max_bandwidth_khz) ||
4075                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4076                                 power_rule->max_antenna_gain) ||
4077                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4078                                 power_rule->max_eirp))
4079                         goto nla_put_failure;
4080
4081                 nla_nest_end(msg, nl_reg_rule);
4082         }
4083
4084         nla_nest_end(msg, nl_reg_rules);
4085
4086         genlmsg_end(msg, hdr);
4087         err = genlmsg_reply(msg, info);
4088         goto out;
4089
4090 nla_put_failure:
4091         genlmsg_cancel(msg, hdr);
4092 put_failure:
4093         nlmsg_free(msg);
4094         err = -EMSGSIZE;
4095 out:
4096         mutex_unlock(&cfg80211_mutex);
4097         return err;
4098 }
4099
4100 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
4101 {
4102         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
4103         struct nlattr *nl_reg_rule;
4104         char *alpha2 = NULL;
4105         int rem_reg_rules = 0, r = 0;
4106         u32 num_rules = 0, rule_idx = 0, size_of_regd;
4107         u8 dfs_region = 0;
4108         struct ieee80211_regdomain *rd = NULL;
4109
4110         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4111                 return -EINVAL;
4112
4113         if (!info->attrs[NL80211_ATTR_REG_RULES])
4114                 return -EINVAL;
4115
4116         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4117
4118         if (info->attrs[NL80211_ATTR_DFS_REGION])
4119                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
4120
4121         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4122                         rem_reg_rules) {
4123                 num_rules++;
4124                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
4125                         return -EINVAL;
4126         }
4127
4128         mutex_lock(&cfg80211_mutex);
4129
4130         if (!reg_is_valid_request(alpha2)) {
4131                 r = -EINVAL;
4132                 goto bad_reg;
4133         }
4134
4135         size_of_regd = sizeof(struct ieee80211_regdomain) +
4136                 (num_rules * sizeof(struct ieee80211_reg_rule));
4137
4138         rd = kzalloc(size_of_regd, GFP_KERNEL);
4139         if (!rd) {
4140                 r = -ENOMEM;
4141                 goto bad_reg;
4142         }
4143
4144         rd->n_reg_rules = num_rules;
4145         rd->alpha2[0] = alpha2[0];
4146         rd->alpha2[1] = alpha2[1];
4147
4148         /*
4149          * Disable DFS master mode if the DFS region was
4150          * not supported or known on this kernel.
4151          */
4152         if (reg_supported_dfs_region(dfs_region))
4153                 rd->dfs_region = dfs_region;
4154
4155         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
4156                         rem_reg_rules) {
4157                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
4158                         nla_data(nl_reg_rule), nla_len(nl_reg_rule),
4159                         reg_rule_policy);
4160                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
4161                 if (r)
4162                         goto bad_reg;
4163
4164                 rule_idx++;
4165
4166                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
4167                         r = -EINVAL;
4168                         goto bad_reg;
4169                 }
4170         }
4171
4172         BUG_ON(rule_idx != num_rules);
4173
4174         r = set_regdom(rd);
4175
4176         mutex_unlock(&cfg80211_mutex);
4177
4178         return r;
4179
4180  bad_reg:
4181         mutex_unlock(&cfg80211_mutex);
4182         kfree(rd);
4183         return r;
4184 }
4185
4186 static int validate_scan_freqs(struct nlattr *freqs)
4187 {
4188         struct nlattr *attr1, *attr2;
4189         int n_channels = 0, tmp1, tmp2;
4190
4191         nla_for_each_nested(attr1, freqs, tmp1) {
4192                 n_channels++;
4193                 /*
4194                  * Some hardware has a limited channel list for
4195                  * scanning, and it is pretty much nonsensical
4196                  * to scan for a channel twice, so disallow that
4197                  * and don't require drivers to check that the
4198                  * channel list they get isn't longer than what
4199                  * they can scan, as long as they can scan all
4200                  * the channels they registered at once.
4201                  */
4202                 nla_for_each_nested(attr2, freqs, tmp2)
4203                         if (attr1 != attr2 &&
4204                             nla_get_u32(attr1) == nla_get_u32(attr2))
4205                                 return 0;
4206         }
4207
4208         return n_channels;
4209 }
4210
4211 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
4212 {
4213         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4214         struct wireless_dev *wdev = info->user_ptr[1];
4215         struct cfg80211_scan_request *request;
4216         struct nlattr *attr;
4217         struct wiphy *wiphy;
4218         int err, tmp, n_ssids = 0, n_channels, i;
4219         size_t ie_len;
4220
4221         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4222                 return -EINVAL;
4223
4224         wiphy = &rdev->wiphy;
4225
4226         if (!rdev->ops->scan)
4227                 return -EOPNOTSUPP;
4228
4229         if (rdev->scan_req)
4230                 return -EBUSY;
4231
4232         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4233                 n_channels = validate_scan_freqs(
4234                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4235                 if (!n_channels)
4236                         return -EINVAL;
4237         } else {
4238                 enum ieee80211_band band;
4239                 n_channels = 0;
4240
4241                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4242                         if (wiphy->bands[band])
4243                                 n_channels += wiphy->bands[band]->n_channels;
4244         }
4245
4246         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4247                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
4248                         n_ssids++;
4249
4250         if (n_ssids > wiphy->max_scan_ssids)
4251                 return -EINVAL;
4252
4253         if (info->attrs[NL80211_ATTR_IE])
4254                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4255         else
4256                 ie_len = 0;
4257
4258         if (ie_len > wiphy->max_scan_ie_len)
4259                 return -EINVAL;
4260
4261         request = kzalloc(sizeof(*request)
4262                         + sizeof(*request->ssids) * n_ssids
4263                         + sizeof(*request->channels) * n_channels
4264                         + ie_len, GFP_KERNEL);
4265         if (!request)
4266                 return -ENOMEM;
4267
4268         if (n_ssids)
4269                 request->ssids = (void *)&request->channels[n_channels];
4270         request->n_ssids = n_ssids;
4271         if (ie_len) {
4272                 if (request->ssids)
4273                         request->ie = (void *)(request->ssids + n_ssids);
4274                 else
4275                         request->ie = (void *)(request->channels + n_channels);
4276         }
4277
4278         i = 0;
4279         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4280                 /* user specified, bail out if channel not found */
4281                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
4282                         struct ieee80211_channel *chan;
4283
4284                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4285
4286                         if (!chan) {
4287                                 err = -EINVAL;
4288                                 goto out_free;
4289                         }
4290
4291                         /* ignore disabled channels */
4292                         if (chan->flags & IEEE80211_CHAN_DISABLED)
4293                                 continue;
4294
4295                         request->channels[i] = chan;
4296                         i++;
4297                 }
4298         } else {
4299                 enum ieee80211_band band;
4300
4301                 /* all channels */
4302                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4303                         int j;
4304                         if (!wiphy->bands[band])
4305                                 continue;
4306                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4307                                 struct ieee80211_channel *chan;
4308
4309                                 chan = &wiphy->bands[band]->channels[j];
4310
4311                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
4312                                         continue;
4313
4314                                 request->channels[i] = chan;
4315                                 i++;
4316                         }
4317                 }
4318         }
4319
4320         if (!i) {
4321                 err = -EINVAL;
4322                 goto out_free;
4323         }
4324
4325         request->n_channels = i;
4326
4327         i = 0;
4328         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4329                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
4330                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4331                                 err = -EINVAL;
4332                                 goto out_free;
4333                         }
4334                         request->ssids[i].ssid_len = nla_len(attr);
4335                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
4336                         i++;
4337                 }
4338         }
4339
4340         if (info->attrs[NL80211_ATTR_IE]) {
4341                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4342                 memcpy((void *)request->ie,
4343                        nla_data(info->attrs[NL80211_ATTR_IE]),
4344                        request->ie_len);
4345         }
4346
4347         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
4348                 if (wiphy->bands[i])
4349                         request->rates[i] =
4350                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
4351
4352         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
4353                 nla_for_each_nested(attr,
4354                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
4355                                     tmp) {
4356                         enum ieee80211_band band = nla_type(attr);
4357
4358                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
4359                                 err = -EINVAL;
4360                                 goto out_free;
4361                         }
4362                         err = ieee80211_get_ratemask(wiphy->bands[band],
4363                                                      nla_data(attr),
4364                                                      nla_len(attr),
4365                                                      &request->rates[band]);
4366                         if (err)
4367                                 goto out_free;
4368                 }
4369         }
4370
4371         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4372                 request->flags = nla_get_u32(
4373                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4374                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4375                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
4376                         err = -EOPNOTSUPP;
4377                         goto out_free;
4378                 }
4379         }
4380
4381         request->no_cck =
4382                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
4383
4384         request->wdev = wdev;
4385         request->wiphy = &rdev->wiphy;
4386
4387         rdev->scan_req = request;
4388         err = rdev->ops->scan(&rdev->wiphy, request);
4389
4390         if (!err) {
4391                 nl80211_send_scan_start(rdev, wdev);
4392                 if (wdev->netdev)
4393                         dev_hold(wdev->netdev);
4394         } else {
4395  out_free:
4396                 rdev->scan_req = NULL;
4397                 kfree(request);
4398         }
4399
4400         return err;
4401 }
4402
4403 static int nl80211_start_sched_scan(struct sk_buff *skb,
4404                                     struct genl_info *info)
4405 {
4406         struct cfg80211_sched_scan_request *request;
4407         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4408         struct net_device *dev = info->user_ptr[1];
4409         struct nlattr *attr;
4410         struct wiphy *wiphy;
4411         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
4412         u32 interval;
4413         enum ieee80211_band band;
4414         size_t ie_len;
4415         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
4416
4417         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4418             !rdev->ops->sched_scan_start)
4419                 return -EOPNOTSUPP;
4420
4421         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4422                 return -EINVAL;
4423
4424         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
4425                 return -EINVAL;
4426
4427         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
4428         if (interval == 0)
4429                 return -EINVAL;
4430
4431         wiphy = &rdev->wiphy;
4432
4433         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4434                 n_channels = validate_scan_freqs(
4435                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
4436                 if (!n_channels)
4437                         return -EINVAL;
4438         } else {
4439                 n_channels = 0;
4440
4441                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
4442                         if (wiphy->bands[band])
4443                                 n_channels += wiphy->bands[band]->n_channels;
4444         }
4445
4446         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
4447                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4448                                     tmp)
4449                         n_ssids++;
4450
4451         if (n_ssids > wiphy->max_sched_scan_ssids)
4452                 return -EINVAL;
4453
4454         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
4455                 nla_for_each_nested(attr,
4456                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4457                                     tmp)
4458                         n_match_sets++;
4459
4460         if (n_match_sets > wiphy->max_match_sets)
4461                 return -EINVAL;
4462
4463         if (info->attrs[NL80211_ATTR_IE])
4464                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4465         else
4466                 ie_len = 0;
4467
4468         if (ie_len > wiphy->max_sched_scan_ie_len)
4469                 return -EINVAL;
4470
4471         mutex_lock(&rdev->sched_scan_mtx);
4472
4473         if (rdev->sched_scan_req) {
4474                 err = -EINPROGRESS;
4475                 goto out;
4476         }
4477
4478         request = kzalloc(sizeof(*request)
4479                         + sizeof(*request->ssids) * n_ssids
4480                         + sizeof(*request->match_sets) * n_match_sets
4481                         + sizeof(*request->channels) * n_channels
4482                         + ie_len, GFP_KERNEL);
4483         if (!request) {
4484                 err = -ENOMEM;
4485                 goto out;
4486         }
4487
4488         if (n_ssids)
4489                 request->ssids = (void *)&request->channels[n_channels];
4490         request->n_ssids = n_ssids;
4491         if (ie_len) {
4492                 if (request->ssids)
4493                         request->ie = (void *)(request->ssids + n_ssids);
4494                 else
4495                         request->ie = (void *)(request->channels + n_channels);
4496         }
4497
4498         if (n_match_sets) {
4499                 if (request->ie)
4500                         request->match_sets = (void *)(request->ie + ie_len);
4501                 else if (request->ssids)
4502                         request->match_sets =
4503                                 (void *)(request->ssids + n_ssids);
4504                 else
4505                         request->match_sets =
4506                                 (void *)(request->channels + n_channels);
4507         }
4508         request->n_match_sets = n_match_sets;
4509
4510         i = 0;
4511         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
4512                 /* user specified, bail out if channel not found */
4513                 nla_for_each_nested(attr,
4514                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
4515                                     tmp) {
4516                         struct ieee80211_channel *chan;
4517
4518                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
4519
4520                         if (!chan) {
4521                                 err = -EINVAL;
4522                                 goto out_free;
4523                         }
4524
4525                         /* ignore disabled channels */
4526                         if (chan->flags & IEEE80211_CHAN_DISABLED)
4527                                 continue;
4528
4529                         request->channels[i] = chan;
4530                         i++;
4531                 }
4532         } else {
4533                 /* all channels */
4534                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
4535                         int j;
4536                         if (!wiphy->bands[band])
4537                                 continue;
4538                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
4539                                 struct ieee80211_channel *chan;
4540
4541                                 chan = &wiphy->bands[band]->channels[j];
4542
4543                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
4544                                         continue;
4545
4546                                 request->channels[i] = chan;
4547                                 i++;
4548                         }
4549                 }
4550         }
4551
4552         if (!i) {
4553                 err = -EINVAL;
4554                 goto out_free;
4555         }
4556
4557         request->n_channels = i;
4558
4559         i = 0;
4560         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
4561                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
4562                                     tmp) {
4563                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
4564                                 err = -EINVAL;
4565                                 goto out_free;
4566                         }
4567                         request->ssids[i].ssid_len = nla_len(attr);
4568                         memcpy(request->ssids[i].ssid, nla_data(attr),
4569                                nla_len(attr));
4570                         i++;
4571                 }
4572         }
4573
4574         i = 0;
4575         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
4576                 nla_for_each_nested(attr,
4577                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
4578                                     tmp) {
4579                         struct nlattr *ssid, *rssi;
4580
4581                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
4582                                   nla_data(attr), nla_len(attr),
4583                                   nl80211_match_policy);
4584                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
4585                         if (ssid) {
4586                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
4587                                         err = -EINVAL;
4588                                         goto out_free;
4589                                 }
4590                                 memcpy(request->match_sets[i].ssid.ssid,
4591                                        nla_data(ssid), nla_len(ssid));
4592                                 request->match_sets[i].ssid.ssid_len =
4593                                         nla_len(ssid);
4594                         }
4595                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
4596                         if (rssi)
4597                                 request->rssi_thold = nla_get_u32(rssi);
4598                         else
4599                                 request->rssi_thold =
4600                                                    NL80211_SCAN_RSSI_THOLD_OFF;
4601                         i++;
4602                 }
4603         }
4604
4605         if (info->attrs[NL80211_ATTR_IE]) {
4606                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4607                 memcpy((void *)request->ie,
4608                        nla_data(info->attrs[NL80211_ATTR_IE]),
4609                        request->ie_len);
4610         }
4611
4612         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
4613                 request->flags = nla_get_u32(
4614                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
4615                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
4616                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
4617                         err = -EOPNOTSUPP;
4618                         goto out_free;
4619                 }
4620         }
4621
4622         request->dev = dev;
4623         request->wiphy = &rdev->wiphy;
4624         request->interval = interval;
4625
4626         err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
4627         if (!err) {
4628                 rdev->sched_scan_req = request;
4629                 nl80211_send_sched_scan(rdev, dev,
4630                                         NL80211_CMD_START_SCHED_SCAN);
4631                 goto out;
4632         }
4633
4634 out_free:
4635         kfree(request);
4636 out:
4637         mutex_unlock(&rdev->sched_scan_mtx);
4638         return err;
4639 }
4640
4641 static int nl80211_stop_sched_scan(struct sk_buff *skb,
4642                                    struct genl_info *info)
4643 {
4644         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4645         int err;
4646
4647         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
4648             !rdev->ops->sched_scan_stop)
4649                 return -EOPNOTSUPP;
4650
4651         mutex_lock(&rdev->sched_scan_mtx);
4652         err = __cfg80211_stop_sched_scan(rdev, false);
4653         mutex_unlock(&rdev->sched_scan_mtx);
4654
4655         return err;
4656 }
4657
4658 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
4659                             u32 seq, int flags,
4660                             struct cfg80211_registered_device *rdev,
4661                             struct wireless_dev *wdev,
4662                             struct cfg80211_internal_bss *intbss)
4663 {
4664         struct cfg80211_bss *res = &intbss->pub;
4665         void *hdr;
4666         struct nlattr *bss;
4667
4668         ASSERT_WDEV_LOCK(wdev);
4669
4670         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
4671                              NL80211_CMD_NEW_SCAN_RESULTS);
4672         if (!hdr)
4673                 return -1;
4674
4675         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
4676
4677         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation) ||
4678             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
4679                 goto nla_put_failure;
4680
4681         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
4682         if (!bss)
4683                 goto nla_put_failure;
4684         if ((!is_zero_ether_addr(res->bssid) &&
4685              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)) ||
4686             (res->information_elements && res->len_information_elements &&
4687              nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
4688                      res->len_information_elements,
4689                      res->information_elements)) ||
4690             (res->beacon_ies && res->len_beacon_ies &&
4691              res->beacon_ies != res->information_elements &&
4692              nla_put(msg, NL80211_BSS_BEACON_IES,
4693                      res->len_beacon_ies, res->beacon_ies)))
4694                 goto nla_put_failure;
4695         if (res->tsf &&
4696             nla_put_u64(msg, NL80211_BSS_TSF, res->tsf))
4697                 goto nla_put_failure;
4698         if (res->beacon_interval &&
4699             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
4700                 goto nla_put_failure;
4701         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
4702             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
4703             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
4704                         jiffies_to_msecs(jiffies - intbss->ts)))
4705                 goto nla_put_failure;
4706
4707         switch (rdev->wiphy.signal_type) {
4708         case CFG80211_SIGNAL_TYPE_MBM:
4709                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
4710                         goto nla_put_failure;
4711                 break;
4712         case CFG80211_SIGNAL_TYPE_UNSPEC:
4713                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
4714                         goto nla_put_failure;
4715                 break;
4716         default:
4717                 break;
4718         }
4719
4720         switch (wdev->iftype) {
4721         case NL80211_IFTYPE_P2P_CLIENT:
4722         case NL80211_IFTYPE_STATION:
4723                 if (intbss == wdev->current_bss &&
4724                     nla_put_u32(msg, NL80211_BSS_STATUS,
4725                                 NL80211_BSS_STATUS_ASSOCIATED))
4726                         goto nla_put_failure;
4727                 break;
4728         case NL80211_IFTYPE_ADHOC:
4729                 if (intbss == wdev->current_bss &&
4730                     nla_put_u32(msg, NL80211_BSS_STATUS,
4731                                 NL80211_BSS_STATUS_IBSS_JOINED))
4732                         goto nla_put_failure;
4733                 break;
4734         default:
4735                 break;
4736         }
4737
4738         nla_nest_end(msg, bss);
4739
4740         return genlmsg_end(msg, hdr);
4741
4742  nla_put_failure:
4743         genlmsg_cancel(msg, hdr);
4744         return -EMSGSIZE;
4745 }
4746
4747 static int nl80211_dump_scan(struct sk_buff *skb,
4748                              struct netlink_callback *cb)
4749 {
4750         struct cfg80211_registered_device *rdev;
4751         struct net_device *dev;
4752         struct cfg80211_internal_bss *scan;
4753         struct wireless_dev *wdev;
4754         int start = cb->args[1], idx = 0;
4755         int err;
4756
4757         err = nl80211_prepare_netdev_dump(skb, cb, &rdev, &dev);
4758         if (err)
4759                 return err;
4760
4761         wdev = dev->ieee80211_ptr;
4762
4763         wdev_lock(wdev);
4764         spin_lock_bh(&rdev->bss_lock);
4765         cfg80211_bss_expire(rdev);
4766
4767         cb->seq = rdev->bss_generation;
4768
4769         list_for_each_entry(scan, &rdev->bss_list, list) {
4770                 if (++idx <= start)
4771                         continue;
4772                 if (nl80211_send_bss(skb, cb,
4773                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4774                                 rdev, wdev, scan) < 0) {
4775                         idx--;
4776                         break;
4777                 }
4778         }
4779
4780         spin_unlock_bh(&rdev->bss_lock);
4781         wdev_unlock(wdev);
4782
4783         cb->args[1] = idx;
4784         nl80211_finish_netdev_dump(rdev);
4785
4786         return skb->len;
4787 }
4788
4789 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
4790                                 int flags, struct net_device *dev,
4791                                 struct survey_info *survey)
4792 {
4793         void *hdr;
4794         struct nlattr *infoattr;
4795
4796         hdr = nl80211hdr_put(msg, portid, seq, flags,
4797                              NL80211_CMD_NEW_SURVEY_RESULTS);
4798         if (!hdr)
4799                 return -ENOMEM;
4800
4801         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
4802                 goto nla_put_failure;
4803
4804         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
4805         if (!infoattr)
4806                 goto nla_put_failure;
4807
4808         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
4809                         survey->channel->center_freq))
4810                 goto nla_put_failure;
4811
4812         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
4813             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
4814                 goto nla_put_failure;
4815         if ((survey->filled & SURVEY_INFO_IN_USE) &&
4816             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
4817                 goto nla_put_failure;
4818         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
4819             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
4820                         survey->channel_time))
4821                 goto nla_put_failure;
4822         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
4823             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
4824                         survey->channel_time_busy))
4825                 goto nla_put_failure;
4826         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
4827             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
4828                         survey->channel_time_ext_busy))
4829                 goto nla_put_failure;
4830         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
4831             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
4832                         survey->channel_time_rx))
4833                 goto nla_put_failure;
4834         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
4835             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
4836                         survey->channel_time_tx))
4837                 goto nla_put_failure;
4838
4839         nla_nest_end(msg, infoattr);
4840
4841         return genlmsg_end(msg, hdr);
4842
4843  nla_put_failure:
4844         genlmsg_cancel(msg, hdr);
4845         return -EMSGSIZE;
4846 }
4847
4848 static int nl80211_dump_survey(struct sk_buff *skb,
4849                         struct netlink_callback *cb)
4850 {
4851         struct survey_info survey;
4852         struct cfg80211_registered_device *dev;
4853         struct net_device *netdev;
4854         int survey_idx = cb->args[1];
4855         int res;
4856
4857         res = nl80211_prepare_netdev_dump(skb, cb, &dev, &netdev);
4858         if (res)
4859                 return res;
4860
4861         if (!dev->ops->dump_survey) {
4862                 res = -EOPNOTSUPP;
4863                 goto out_err;
4864         }
4865
4866         while (1) {
4867                 struct ieee80211_channel *chan;
4868
4869                 res = dev->ops->dump_survey(&dev->wiphy, netdev, survey_idx,
4870                                             &survey);
4871                 if (res == -ENOENT)
4872                         break;
4873                 if (res)
4874                         goto out_err;
4875
4876                 /* Survey without a channel doesn't make sense */
4877                 if (!survey.channel) {
4878                         res = -EINVAL;
4879                         goto out;
4880                 }
4881
4882                 chan = ieee80211_get_channel(&dev->wiphy,
4883                                              survey.channel->center_freq);
4884                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
4885                         survey_idx++;
4886                         continue;
4887                 }
4888
4889                 if (nl80211_send_survey(skb,
4890                                 NETLINK_CB(cb->skb).portid,
4891                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
4892                                 netdev,
4893                                 &survey) < 0)
4894                         goto out;
4895                 survey_idx++;
4896         }
4897
4898  out:
4899         cb->args[1] = survey_idx;
4900         res = skb->len;
4901  out_err:
4902         nl80211_finish_netdev_dump(dev);
4903         return res;
4904 }
4905
4906 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
4907 {
4908         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
4909                                   NL80211_WPA_VERSION_2));
4910 }
4911
4912 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
4913 {
4914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4915         struct net_device *dev = info->user_ptr[1];
4916         struct ieee80211_channel *chan;
4917         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
4918         int err, ssid_len, ie_len = 0, sae_data_len = 0;
4919         enum nl80211_auth_type auth_type;
4920         struct key_parse key;
4921         bool local_state_change;
4922
4923         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
4924                 return -EINVAL;
4925
4926         if (!info->attrs[NL80211_ATTR_MAC])
4927                 return -EINVAL;
4928
4929         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
4930                 return -EINVAL;
4931
4932         if (!info->attrs[NL80211_ATTR_SSID])
4933                 return -EINVAL;
4934
4935         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
4936                 return -EINVAL;
4937
4938         err = nl80211_parse_key(info, &key);
4939         if (err)
4940                 return err;
4941
4942         if (key.idx >= 0) {
4943                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
4944                         return -EINVAL;
4945                 if (!key.p.key || !key.p.key_len)
4946                         return -EINVAL;
4947                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
4948                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
4949                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
4950                      key.p.key_len != WLAN_KEY_LEN_WEP104))
4951                         return -EINVAL;
4952                 if (key.idx > 4)
4953                         return -EINVAL;
4954         } else {
4955                 key.p.key_len = 0;
4956                 key.p.key = NULL;
4957         }
4958
4959         if (key.idx >= 0) {
4960                 int i;
4961                 bool ok = false;
4962                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
4963                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
4964                                 ok = true;
4965                                 break;
4966                         }
4967                 }
4968                 if (!ok)
4969                         return -EINVAL;
4970         }
4971
4972         if (!rdev->ops->auth)
4973                 return -EOPNOTSUPP;
4974
4975         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
4976             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
4977                 return -EOPNOTSUPP;
4978
4979         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
4980         chan = ieee80211_get_channel(&rdev->wiphy,
4981                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
4982         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
4983                 return -EINVAL;
4984
4985         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4986         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
4987
4988         if (info->attrs[NL80211_ATTR_IE]) {
4989                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
4990                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
4991         }
4992
4993         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
4994         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
4995                 return -EINVAL;
4996
4997         if (auth_type == NL80211_AUTHTYPE_SAE &&
4998             !info->attrs[NL80211_ATTR_SAE_DATA])
4999                 return -EINVAL;
5000
5001         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5002                 if (auth_type != NL80211_AUTHTYPE_SAE)
5003                         return -EINVAL;
5004                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5005                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5006                 /* need to include at least Auth Transaction and Status Code */
5007                 if (sae_data_len < 4)
5008                         return -EINVAL;
5009         }
5010
5011         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5012
5013         /*
5014          * Since we no longer track auth state, ignore
5015          * requests to only change local state.
5016          */
5017         if (local_state_change)
5018                 return 0;
5019
5020         return cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5021                                   ssid, ssid_len, ie, ie_len,
5022                                   key.p.key, key.p.key_len, key.idx,
5023                                   sae_data, sae_data_len);
5024 }
5025
5026 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
5027                                    struct genl_info *info,
5028                                    struct cfg80211_crypto_settings *settings,
5029                                    int cipher_limit)
5030 {
5031         memset(settings, 0, sizeof(*settings));
5032
5033         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
5034
5035         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
5036                 u16 proto;
5037                 proto = nla_get_u16(
5038                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
5039                 settings->control_port_ethertype = cpu_to_be16(proto);
5040                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
5041                     proto != ETH_P_PAE)
5042                         return -EINVAL;
5043                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
5044                         settings->control_port_no_encrypt = true;
5045         } else
5046                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
5047
5048         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
5049                 void *data;
5050                 int len, i;
5051
5052                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5053                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
5054                 settings->n_ciphers_pairwise = len / sizeof(u32);
5055
5056                 if (len % sizeof(u32))
5057                         return -EINVAL;
5058
5059                 if (settings->n_ciphers_pairwise > cipher_limit)
5060                         return -EINVAL;
5061
5062                 memcpy(settings->ciphers_pairwise, data, len);
5063
5064                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
5065                         if (!cfg80211_supported_cipher_suite(
5066                                         &rdev->wiphy,
5067                                         settings->ciphers_pairwise[i]))
5068                                 return -EINVAL;
5069         }
5070
5071         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
5072                 settings->cipher_group =
5073                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
5074                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
5075                                                      settings->cipher_group))
5076                         return -EINVAL;
5077         }
5078
5079         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
5080                 settings->wpa_versions =
5081                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
5082                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
5083                         return -EINVAL;
5084         }
5085
5086         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
5087                 void *data;
5088                 int len;
5089
5090                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
5091                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
5092                 settings->n_akm_suites = len / sizeof(u32);
5093
5094                 if (len % sizeof(u32))
5095                         return -EINVAL;
5096
5097                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
5098                         return -EINVAL;
5099
5100                 memcpy(settings->akm_suites, data, len);
5101         }
5102
5103         return 0;
5104 }
5105
5106 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
5107 {
5108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5109         struct net_device *dev = info->user_ptr[1];
5110         struct cfg80211_crypto_settings crypto;
5111         struct ieee80211_channel *chan;
5112         const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
5113         int err, ssid_len, ie_len = 0;
5114         bool use_mfp = false;
5115         u32 flags = 0;
5116         struct ieee80211_ht_cap *ht_capa = NULL;
5117         struct ieee80211_ht_cap *ht_capa_mask = NULL;
5118
5119         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5120                 return -EINVAL;
5121
5122         if (!info->attrs[NL80211_ATTR_MAC] ||
5123             !info->attrs[NL80211_ATTR_SSID] ||
5124             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
5125                 return -EINVAL;
5126
5127         if (!rdev->ops->assoc)
5128                 return -EOPNOTSUPP;
5129
5130         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5131             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5132                 return -EOPNOTSUPP;
5133
5134         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5135
5136         chan = ieee80211_get_channel(&rdev->wiphy,
5137                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5138         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5139                 return -EINVAL;
5140
5141         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5142         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5143
5144         if (info->attrs[NL80211_ATTR_IE]) {
5145                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5146                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5147         }
5148
5149         if (info->attrs[NL80211_ATTR_USE_MFP]) {
5150                 enum nl80211_mfp mfp =
5151                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
5152                 if (mfp == NL80211_MFP_REQUIRED)
5153                         use_mfp = true;
5154                 else if (mfp != NL80211_MFP_NO)
5155                         return -EINVAL;
5156         }
5157
5158         if (info->attrs[NL80211_ATTR_PREV_BSSID])
5159                 prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
5160
5161         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5162                 flags |= ASSOC_REQ_DISABLE_HT;
5163
5164         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5165                 ht_capa_mask =
5166                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]);
5167
5168         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5169                 if (!ht_capa_mask)
5170                         return -EINVAL;
5171                 ht_capa = nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5172         }
5173
5174         err = nl80211_crypto_settings(rdev, info, &crypto, 1);
5175         if (!err)
5176                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, prev_bssid,
5177                                           ssid, ssid_len, ie, ie_len, use_mfp,
5178                                           &crypto, flags, ht_capa,
5179                                           ht_capa_mask);
5180
5181         return err;
5182 }
5183
5184 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
5185 {
5186         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5187         struct net_device *dev = info->user_ptr[1];
5188         const u8 *ie = NULL, *bssid;
5189         int ie_len = 0;
5190         u16 reason_code;
5191         bool local_state_change;
5192
5193         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5194                 return -EINVAL;
5195
5196         if (!info->attrs[NL80211_ATTR_MAC])
5197                 return -EINVAL;
5198
5199         if (!info->attrs[NL80211_ATTR_REASON_CODE])
5200                 return -EINVAL;
5201
5202         if (!rdev->ops->deauth)
5203                 return -EOPNOTSUPP;
5204
5205         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5206             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5207                 return -EOPNOTSUPP;
5208
5209         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5210
5211         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5212         if (reason_code == 0) {
5213                 /* Reason Code 0 is reserved */
5214                 return -EINVAL;
5215         }
5216
5217         if (info->attrs[NL80211_ATTR_IE]) {
5218                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5219                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5220         }
5221
5222         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5223
5224         return cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
5225                                     local_state_change);
5226 }
5227
5228 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
5229 {
5230         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5231         struct net_device *dev = info->user_ptr[1];
5232         const u8 *ie = NULL, *bssid;
5233         int ie_len = 0;
5234         u16 reason_code;
5235         bool local_state_change;
5236
5237         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5238                 return -EINVAL;
5239
5240         if (!info->attrs[NL80211_ATTR_MAC])
5241                 return -EINVAL;
5242
5243         if (!info->attrs[NL80211_ATTR_REASON_CODE])
5244                 return -EINVAL;
5245
5246         if (!rdev->ops->disassoc)
5247                 return -EOPNOTSUPP;
5248
5249         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5250             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5251                 return -EOPNOTSUPP;
5252
5253         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5254
5255         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5256         if (reason_code == 0) {
5257                 /* Reason Code 0 is reserved */
5258                 return -EINVAL;
5259         }
5260
5261         if (info->attrs[NL80211_ATTR_IE]) {
5262                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5263                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5264         }
5265
5266         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5267
5268         return cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
5269                                       local_state_change);
5270 }
5271
5272 static bool
5273 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
5274                          int mcast_rate[IEEE80211_NUM_BANDS],
5275                          int rateval)
5276 {
5277         struct wiphy *wiphy = &rdev->wiphy;
5278         bool found = false;
5279         int band, i;
5280
5281         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5282                 struct ieee80211_supported_band *sband;
5283
5284                 sband = wiphy->bands[band];
5285                 if (!sband)
5286                         continue;
5287
5288                 for (i = 0; i < sband->n_bitrates; i++) {
5289                         if (sband->bitrates[i].bitrate == rateval) {
5290                                 mcast_rate[band] = i + 1;
5291                                 found = true;
5292                                 break;
5293                         }
5294                 }
5295         }
5296
5297         return found;
5298 }
5299
5300 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
5301 {
5302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5303         struct net_device *dev = info->user_ptr[1];
5304         struct cfg80211_ibss_params ibss;
5305         struct wiphy *wiphy;
5306         struct cfg80211_cached_keys *connkeys = NULL;
5307         int err;
5308
5309         memset(&ibss, 0, sizeof(ibss));
5310
5311         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5312                 return -EINVAL;
5313
5314         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5315             !info->attrs[NL80211_ATTR_SSID] ||
5316             !nla_len(info->attrs[NL80211_ATTR_SSID]))
5317                 return -EINVAL;
5318
5319         ibss.beacon_interval = 100;
5320
5321         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
5322                 ibss.beacon_interval =
5323                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5324                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
5325                         return -EINVAL;
5326         }
5327
5328         if (!rdev->ops->join_ibss)
5329                 return -EOPNOTSUPP;
5330
5331         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5332                 return -EOPNOTSUPP;
5333
5334         wiphy = &rdev->wiphy;
5335
5336         if (info->attrs[NL80211_ATTR_MAC]) {
5337                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5338
5339                 if (!is_valid_ether_addr(ibss.bssid))
5340                         return -EINVAL;
5341         }
5342         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5343         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5344
5345         if (info->attrs[NL80211_ATTR_IE]) {
5346                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5347                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5348         }
5349
5350         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
5351                 enum nl80211_channel_type channel_type;
5352
5353                 if (!nl80211_valid_channel_type(info, &channel_type))
5354                         return -EINVAL;
5355
5356                 if (channel_type != NL80211_CHAN_NO_HT &&
5357                     !(wiphy->features & NL80211_FEATURE_HT_IBSS))
5358                         return -EINVAL;
5359
5360                 ibss.channel_type = channel_type;
5361         } else {
5362                 ibss.channel_type = NL80211_CHAN_NO_HT;
5363         }
5364
5365         ibss.channel = rdev_freq_to_chan(rdev,
5366                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
5367                 ibss.channel_type);
5368         if (!ibss.channel ||
5369             ibss.channel->flags & IEEE80211_CHAN_NO_IBSS ||
5370             ibss.channel->flags & IEEE80211_CHAN_DISABLED)
5371                 return -EINVAL;
5372
5373         /* Both channels should be able to initiate communication */
5374         if ((ibss.channel_type == NL80211_CHAN_HT40PLUS ||
5375              ibss.channel_type == NL80211_CHAN_HT40MINUS) &&
5376             !cfg80211_can_beacon_sec_chan(&rdev->wiphy, ibss.channel,
5377                                           ibss.channel_type))
5378                 return -EINVAL;
5379
5380         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
5381         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5382
5383         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
5384                 u8 *rates =
5385                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5386                 int n_rates =
5387                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
5388                 struct ieee80211_supported_band *sband =
5389                         wiphy->bands[ibss.channel->band];
5390
5391                 err = ieee80211_get_ratemask(sband, rates, n_rates,
5392                                              &ibss.basic_rates);
5393                 if (err)
5394                         return err;
5395         }
5396
5397         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
5398             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
5399                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
5400                 return -EINVAL;
5401
5402         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5403                 connkeys = nl80211_parse_connkeys(rdev,
5404                                         info->attrs[NL80211_ATTR_KEYS]);
5405                 if (IS_ERR(connkeys))
5406                         return PTR_ERR(connkeys);
5407         }
5408
5409         ibss.control_port =
5410                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
5411
5412         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
5413         if (err)
5414                 kfree(connkeys);
5415         return err;
5416 }
5417
5418 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
5419 {
5420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5421         struct net_device *dev = info->user_ptr[1];
5422
5423         if (!rdev->ops->leave_ibss)
5424                 return -EOPNOTSUPP;
5425
5426         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
5427                 return -EOPNOTSUPP;
5428
5429         return cfg80211_leave_ibss(rdev, dev, false);
5430 }
5431
5432 #ifdef CONFIG_NL80211_TESTMODE
5433 static struct genl_multicast_group nl80211_testmode_mcgrp = {
5434         .name = "testmode",
5435 };
5436
5437 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
5438 {
5439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5440         int err;
5441
5442         if (!info->attrs[NL80211_ATTR_TESTDATA])
5443                 return -EINVAL;
5444
5445         err = -EOPNOTSUPP;
5446         if (rdev->ops->testmode_cmd) {
5447                 rdev->testmode_info = info;
5448                 err = rdev->ops->testmode_cmd(&rdev->wiphy,
5449                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
5450                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
5451                 rdev->testmode_info = NULL;
5452         }
5453
5454         return err;
5455 }
5456
5457 static int nl80211_testmode_dump(struct sk_buff *skb,
5458                                  struct netlink_callback *cb)
5459 {
5460         struct cfg80211_registered_device *rdev;
5461         int err;
5462         long phy_idx;
5463         void *data = NULL;
5464         int data_len = 0;
5465
5466         if (cb->args[0]) {
5467                 /*
5468                  * 0 is a valid index, but not valid for args[0],
5469                  * so we need to offset by 1.
5470                  */
5471                 phy_idx = cb->args[0] - 1;
5472         } else {
5473                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
5474                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
5475                                   nl80211_policy);
5476                 if (err)
5477                         return err;
5478
5479                 mutex_lock(&cfg80211_mutex);
5480                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
5481                                                   nl80211_fam.attrbuf);
5482                 if (IS_ERR(rdev)) {
5483                         mutex_unlock(&cfg80211_mutex);
5484                         return PTR_ERR(rdev);
5485                 }
5486                 phy_idx = rdev->wiphy_idx;
5487                 rdev = NULL;
5488                 mutex_unlock(&cfg80211_mutex);
5489
5490                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
5491                         cb->args[1] =
5492                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
5493         }
5494
5495         if (cb->args[1]) {
5496                 data = nla_data((void *)cb->args[1]);
5497                 data_len = nla_len((void *)cb->args[1]);
5498         }
5499
5500         mutex_lock(&cfg80211_mutex);
5501         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
5502         if (!rdev) {
5503                 mutex_unlock(&cfg80211_mutex);
5504                 return -ENOENT;
5505         }
5506         cfg80211_lock_rdev(rdev);
5507         mutex_unlock(&cfg80211_mutex);
5508
5509         if (!rdev->ops->testmode_dump) {
5510                 err = -EOPNOTSUPP;
5511                 goto out_err;
5512         }
5513
5514         while (1) {
5515                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
5516                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
5517                                            NL80211_CMD_TESTMODE);
5518                 struct nlattr *tmdata;
5519
5520                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
5521                         genlmsg_cancel(skb, hdr);
5522                         break;
5523                 }
5524
5525                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5526                 if (!tmdata) {
5527                         genlmsg_cancel(skb, hdr);
5528                         break;
5529                 }
5530                 err = rdev->ops->testmode_dump(&rdev->wiphy, skb, cb,
5531                                                data, data_len);
5532                 nla_nest_end(skb, tmdata);
5533
5534                 if (err == -ENOBUFS || err == -ENOENT) {
5535                         genlmsg_cancel(skb, hdr);
5536                         break;
5537                 } else if (err) {
5538                         genlmsg_cancel(skb, hdr);
5539                         goto out_err;
5540                 }
5541
5542                 genlmsg_end(skb, hdr);
5543         }
5544
5545         err = skb->len;
5546         /* see above */
5547         cb->args[0] = phy_idx + 1;
5548  out_err:
5549         cfg80211_unlock_rdev(rdev);
5550         return err;
5551 }
5552
5553 static struct sk_buff *
5554 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
5555                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
5556 {
5557         struct sk_buff *skb;
5558         void *hdr;
5559         struct nlattr *data;
5560
5561         skb = nlmsg_new(approxlen + 100, gfp);
5562         if (!skb)
5563                 return NULL;
5564
5565         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
5566         if (!hdr) {
5567                 kfree_skb(skb);
5568                 return NULL;
5569         }
5570
5571         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
5572                 goto nla_put_failure;
5573         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
5574
5575         ((void **)skb->cb)[0] = rdev;
5576         ((void **)skb->cb)[1] = hdr;
5577         ((void **)skb->cb)[2] = data;
5578
5579         return skb;
5580
5581  nla_put_failure:
5582         kfree_skb(skb);
5583         return NULL;
5584 }
5585
5586 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
5587                                                   int approxlen)
5588 {
5589         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5590
5591         if (WARN_ON(!rdev->testmode_info))
5592                 return NULL;
5593
5594         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
5595                                 rdev->testmode_info->snd_portid,
5596                                 rdev->testmode_info->snd_seq,
5597                                 GFP_KERNEL);
5598 }
5599 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
5600
5601 int cfg80211_testmode_reply(struct sk_buff *skb)
5602 {
5603         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
5604         void *hdr = ((void **)skb->cb)[1];
5605         struct nlattr *data = ((void **)skb->cb)[2];
5606
5607         if (WARN_ON(!rdev->testmode_info)) {
5608                 kfree_skb(skb);
5609                 return -EINVAL;
5610         }
5611
5612         nla_nest_end(skb, data);
5613         genlmsg_end(skb, hdr);
5614         return genlmsg_reply(skb, rdev->testmode_info);
5615 }
5616 EXPORT_SYMBOL(cfg80211_testmode_reply);
5617
5618 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
5619                                                   int approxlen, gfp_t gfp)
5620 {
5621         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
5622
5623         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
5624 }
5625 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
5626
5627 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
5628 {
5629         void *hdr = ((void **)skb->cb)[1];
5630         struct nlattr *data = ((void **)skb->cb)[2];
5631
5632         nla_nest_end(skb, data);
5633         genlmsg_end(skb, hdr);
5634         genlmsg_multicast(skb, 0, nl80211_testmode_mcgrp.id, gfp);
5635 }
5636 EXPORT_SYMBOL(cfg80211_testmode_event);
5637 #endif
5638
5639 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
5640 {
5641         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5642         struct net_device *dev = info->user_ptr[1];
5643         struct cfg80211_connect_params connect;
5644         struct wiphy *wiphy;
5645         struct cfg80211_cached_keys *connkeys = NULL;
5646         int err;
5647
5648         memset(&connect, 0, sizeof(connect));
5649
5650         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5651                 return -EINVAL;
5652
5653         if (!info->attrs[NL80211_ATTR_SSID] ||
5654             !nla_len(info->attrs[NL80211_ATTR_SSID]))
5655                 return -EINVAL;
5656
5657         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5658                 connect.auth_type =
5659                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5660                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
5661                                              NL80211_CMD_CONNECT))
5662                         return -EINVAL;
5663         } else
5664                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5665
5666         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
5667
5668         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
5669                                       NL80211_MAX_NR_CIPHER_SUITES);
5670         if (err)
5671                 return err;
5672
5673         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5674             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5675                 return -EOPNOTSUPP;
5676
5677         wiphy = &rdev->wiphy;
5678
5679         connect.bg_scan_period = -1;
5680         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
5681                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
5682                 connect.bg_scan_period =
5683                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
5684         }
5685
5686         if (info->attrs[NL80211_ATTR_MAC])
5687                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5688         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5689         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5690
5691         if (info->attrs[NL80211_ATTR_IE]) {
5692                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5693                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5694         }
5695
5696         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5697                 connect.channel =
5698                         ieee80211_get_channel(wiphy,
5699                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5700                 if (!connect.channel ||
5701                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
5702                         return -EINVAL;
5703         }
5704
5705         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
5706                 connkeys = nl80211_parse_connkeys(rdev,
5707                                         info->attrs[NL80211_ATTR_KEYS]);
5708                 if (IS_ERR(connkeys))
5709                         return PTR_ERR(connkeys);
5710         }
5711
5712         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
5713                 connect.flags |= ASSOC_REQ_DISABLE_HT;
5714
5715         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
5716                 memcpy(&connect.ht_capa_mask,
5717                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
5718                        sizeof(connect.ht_capa_mask));
5719
5720         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
5721                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
5722                         kfree(connkeys);
5723                         return -EINVAL;
5724                 }
5725                 memcpy(&connect.ht_capa,
5726                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
5727                        sizeof(connect.ht_capa));
5728         }
5729
5730         err = cfg80211_connect(rdev, dev, &connect, connkeys);
5731         if (err)
5732                 kfree(connkeys);
5733         return err;
5734 }
5735
5736 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
5737 {
5738         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5739         struct net_device *dev = info->user_ptr[1];
5740         u16 reason;
5741
5742         if (!info->attrs[NL80211_ATTR_REASON_CODE])
5743                 reason = WLAN_REASON_DEAUTH_LEAVING;
5744         else
5745                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
5746
5747         if (reason == 0)
5748                 return -EINVAL;
5749
5750         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5751             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5752                 return -EOPNOTSUPP;
5753
5754         return cfg80211_disconnect(rdev, dev, reason, true);
5755 }
5756
5757 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
5758 {
5759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5760         struct net *net;
5761         int err;
5762         u32 pid;
5763
5764         if (!info->attrs[NL80211_ATTR_PID])
5765                 return -EINVAL;
5766
5767         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
5768
5769         net = get_net_ns_by_pid(pid);
5770         if (IS_ERR(net))
5771                 return PTR_ERR(net);
5772
5773         err = 0;
5774
5775         /* check if anything to do */
5776         if (!net_eq(wiphy_net(&rdev->wiphy), net))
5777                 err = cfg80211_switch_netns(rdev, net);
5778
5779         put_net(net);
5780         return err;
5781 }
5782
5783 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
5784 {
5785         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5786         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
5787                         struct cfg80211_pmksa *pmksa) = NULL;
5788         struct net_device *dev = info->user_ptr[1];
5789         struct cfg80211_pmksa pmksa;
5790
5791         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
5792
5793         if (!info->attrs[NL80211_ATTR_MAC])
5794                 return -EINVAL;
5795
5796         if (!info->attrs[NL80211_ATTR_PMKID])
5797                 return -EINVAL;
5798
5799         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
5800         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5801
5802         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5803             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5804                 return -EOPNOTSUPP;
5805
5806         switch (info->genlhdr->cmd) {
5807         case NL80211_CMD_SET_PMKSA:
5808                 rdev_ops = rdev->ops->set_pmksa;
5809                 break;
5810         case NL80211_CMD_DEL_PMKSA:
5811                 rdev_ops = rdev->ops->del_pmksa;
5812                 break;
5813         default:
5814                 WARN_ON(1);
5815                 break;
5816         }
5817
5818         if (!rdev_ops)
5819                 return -EOPNOTSUPP;
5820
5821         return rdev_ops(&rdev->wiphy, dev, &pmksa);
5822 }
5823
5824 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
5825 {
5826         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5827         struct net_device *dev = info->user_ptr[1];
5828
5829         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5830             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5831                 return -EOPNOTSUPP;
5832
5833         if (!rdev->ops->flush_pmksa)
5834                 return -EOPNOTSUPP;
5835
5836         return rdev->ops->flush_pmksa(&rdev->wiphy, dev);
5837 }
5838
5839 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
5840 {
5841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5842         struct net_device *dev = info->user_ptr[1];
5843         u8 action_code, dialog_token;
5844         u16 status_code;
5845         u8 *peer;
5846
5847         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5848             !rdev->ops->tdls_mgmt)
5849                 return -EOPNOTSUPP;
5850
5851         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
5852             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
5853             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
5854             !info->attrs[NL80211_ATTR_IE] ||
5855             !info->attrs[NL80211_ATTR_MAC])
5856                 return -EINVAL;
5857
5858         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5859         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
5860         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
5861         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
5862
5863         return rdev->ops->tdls_mgmt(&rdev->wiphy, dev, peer, action_code,
5864                                     dialog_token, status_code,
5865                                     nla_data(info->attrs[NL80211_ATTR_IE]),
5866                                     nla_len(info->attrs[NL80211_ATTR_IE]));
5867 }
5868
5869 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
5870 {
5871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5872         struct net_device *dev = info->user_ptr[1];
5873         enum nl80211_tdls_operation operation;
5874         u8 *peer;
5875
5876         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
5877             !rdev->ops->tdls_oper)
5878                 return -EOPNOTSUPP;
5879
5880         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
5881             !info->attrs[NL80211_ATTR_MAC])
5882                 return -EINVAL;
5883
5884         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
5885         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
5886
5887         return rdev->ops->tdls_oper(&rdev->wiphy, dev, peer, operation);
5888 }
5889
5890 static int nl80211_remain_on_channel(struct sk_buff *skb,
5891                                      struct genl_info *info)
5892 {
5893         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5894         struct wireless_dev *wdev = info->user_ptr[1];
5895         struct ieee80211_channel *chan;
5896         struct sk_buff *msg;
5897         void *hdr;
5898         u64 cookie;
5899         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
5900         u32 freq, duration;
5901         int err;
5902
5903         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5904             !info->attrs[NL80211_ATTR_DURATION])
5905                 return -EINVAL;
5906
5907         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
5908
5909         if (!rdev->ops->remain_on_channel ||
5910             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
5911                 return -EOPNOTSUPP;
5912
5913         /*
5914          * We should be on that channel for at least a minimum amount of
5915          * time (10ms) but no longer than the driver supports.
5916          */
5917         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
5918             duration > rdev->wiphy.max_remain_on_channel_duration)
5919                 return -EINVAL;
5920
5921         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
5922             !nl80211_valid_channel_type(info, &channel_type))
5923                 return -EINVAL;
5924
5925         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
5926         chan = rdev_freq_to_chan(rdev, freq, channel_type);
5927         if (chan == NULL)
5928                 return -EINVAL;
5929
5930         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5931         if (!msg)
5932                 return -ENOMEM;
5933
5934         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5935                              NL80211_CMD_REMAIN_ON_CHANNEL);
5936
5937         if (IS_ERR(hdr)) {
5938                 err = PTR_ERR(hdr);
5939                 goto free_msg;
5940         }
5941
5942         err = rdev->ops->remain_on_channel(&rdev->wiphy, wdev, chan,
5943                                            channel_type, duration, &cookie);
5944
5945         if (err)
5946                 goto free_msg;
5947
5948         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
5949                 goto nla_put_failure;
5950
5951         genlmsg_end(msg, hdr);
5952
5953         return genlmsg_reply(msg, info);
5954
5955  nla_put_failure:
5956         err = -ENOBUFS;
5957  free_msg:
5958         nlmsg_free(msg);
5959         return err;
5960 }
5961
5962 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
5963                                             struct genl_info *info)
5964 {
5965         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5966         struct wireless_dev *wdev = info->user_ptr[1];
5967         u64 cookie;
5968
5969         if (!info->attrs[NL80211_ATTR_COOKIE])
5970                 return -EINVAL;
5971
5972         if (!rdev->ops->cancel_remain_on_channel)
5973                 return -EOPNOTSUPP;
5974
5975         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
5976
5977         return rdev->ops->cancel_remain_on_channel(&rdev->wiphy, wdev, cookie);
5978 }
5979
5980 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
5981                            u8 *rates, u8 rates_len)
5982 {
5983         u8 i;
5984         u32 mask = 0;
5985
5986         for (i = 0; i < rates_len; i++) {
5987                 int rate = (rates[i] & 0x7f) * 5;
5988                 int ridx;
5989                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
5990                         struct ieee80211_rate *srate =
5991                                 &sband->bitrates[ridx];
5992                         if (rate == srate->bitrate) {
5993                                 mask |= 1 << ridx;
5994                                 break;
5995                         }
5996                 }
5997                 if (ridx == sband->n_bitrates)
5998                         return 0; /* rate not found */
5999         }
6000
6001         return mask;
6002 }
6003
6004 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
6005                                u8 *rates, u8 rates_len,
6006                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
6007 {
6008         u8 i;
6009
6010         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
6011
6012         for (i = 0; i < rates_len; i++) {
6013                 int ridx, rbit;
6014
6015                 ridx = rates[i] / 8;
6016                 rbit = BIT(rates[i] % 8);
6017
6018                 /* check validity */
6019                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
6020                         return false;
6021
6022                 /* check availability */
6023                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
6024                         mcs[ridx] |= rbit;
6025                 else
6026                         return false;
6027         }
6028
6029         return true;
6030 }
6031
6032 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
6033         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
6034                                     .len = NL80211_MAX_SUPP_RATES },
6035         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
6036                                  .len = NL80211_MAX_SUPP_HT_RATES },
6037 };
6038
6039 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
6040                                        struct genl_info *info)
6041 {
6042         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
6043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6044         struct cfg80211_bitrate_mask mask;
6045         int rem, i;
6046         struct net_device *dev = info->user_ptr[1];
6047         struct nlattr *tx_rates;
6048         struct ieee80211_supported_band *sband;
6049
6050         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
6051                 return -EINVAL;
6052
6053         if (!rdev->ops->set_bitrate_mask)
6054                 return -EOPNOTSUPP;
6055
6056         memset(&mask, 0, sizeof(mask));
6057         /* Default to all rates enabled */
6058         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
6059                 sband = rdev->wiphy.bands[i];
6060                 mask.control[i].legacy =
6061                         sband ? (1 << sband->n_bitrates) - 1 : 0;
6062                 if (sband)
6063                         memcpy(mask.control[i].mcs,
6064                                sband->ht_cap.mcs.rx_mask,
6065                                sizeof(mask.control[i].mcs));
6066                 else
6067                         memset(mask.control[i].mcs, 0,
6068                                sizeof(mask.control[i].mcs));
6069         }
6070
6071         /*
6072          * The nested attribute uses enum nl80211_band as the index. This maps
6073          * directly to the enum ieee80211_band values used in cfg80211.
6074          */
6075         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
6076         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
6077         {
6078                 enum ieee80211_band band = nla_type(tx_rates);
6079                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
6080                         return -EINVAL;
6081                 sband = rdev->wiphy.bands[band];
6082                 if (sband == NULL)
6083                         return -EINVAL;
6084                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
6085                           nla_len(tx_rates), nl80211_txattr_policy);
6086                 if (tb[NL80211_TXRATE_LEGACY]) {
6087                         mask.control[band].legacy = rateset_to_mask(
6088                                 sband,
6089                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
6090                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
6091                         if ((mask.control[band].legacy == 0) &&
6092                             nla_len(tb[NL80211_TXRATE_LEGACY]))
6093                                 return -EINVAL;
6094                 }
6095                 if (tb[NL80211_TXRATE_MCS]) {
6096                         if (!ht_rateset_to_mask(
6097                                         sband,
6098                                         nla_data(tb[NL80211_TXRATE_MCS]),
6099                                         nla_len(tb[NL80211_TXRATE_MCS]),
6100                                         mask.control[band].mcs))
6101                                 return -EINVAL;
6102                 }
6103
6104                 if (mask.control[band].legacy == 0) {
6105                         /* don't allow empty legacy rates if HT
6106                          * is not even supported. */
6107                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
6108                                 return -EINVAL;
6109
6110                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
6111                                 if (mask.control[band].mcs[i])
6112                                         break;
6113
6114                         /* legacy and mcs rates may not be both empty */
6115                         if (i == IEEE80211_HT_MCS_MASK_LEN)
6116                                 return -EINVAL;
6117                 }
6118         }
6119
6120         return rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
6121 }
6122
6123 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
6124 {
6125         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6126         struct wireless_dev *wdev = info->user_ptr[1];
6127         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
6128
6129         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
6130                 return -EINVAL;
6131
6132         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
6133                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
6134
6135         switch (wdev->iftype) {
6136         case NL80211_IFTYPE_STATION:
6137         case NL80211_IFTYPE_ADHOC:
6138         case NL80211_IFTYPE_P2P_CLIENT:
6139         case NL80211_IFTYPE_AP:
6140         case NL80211_IFTYPE_AP_VLAN:
6141         case NL80211_IFTYPE_MESH_POINT:
6142         case NL80211_IFTYPE_P2P_GO:
6143         case NL80211_IFTYPE_P2P_DEVICE:
6144                 break;
6145         default:
6146                 return -EOPNOTSUPP;
6147         }
6148
6149         /* not much point in registering if we can't reply */
6150         if (!rdev->ops->mgmt_tx)
6151                 return -EOPNOTSUPP;
6152
6153         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
6154                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
6155                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
6156 }
6157
6158 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
6159 {
6160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6161         struct wireless_dev *wdev = info->user_ptr[1];
6162         struct ieee80211_channel *chan;
6163         enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6164         bool channel_type_valid = false;
6165         u32 freq;
6166         int err;
6167         void *hdr = NULL;
6168         u64 cookie;
6169         struct sk_buff *msg = NULL;
6170         unsigned int wait = 0;
6171         bool offchan, no_cck, dont_wait_for_ack;
6172
6173         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
6174
6175         if (!info->attrs[NL80211_ATTR_FRAME] ||
6176             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6177                 return -EINVAL;
6178
6179         if (!rdev->ops->mgmt_tx)
6180                 return -EOPNOTSUPP;
6181
6182         switch (wdev->iftype) {
6183         case NL80211_IFTYPE_STATION:
6184         case NL80211_IFTYPE_ADHOC:
6185         case NL80211_IFTYPE_P2P_CLIENT:
6186         case NL80211_IFTYPE_AP:
6187         case NL80211_IFTYPE_AP_VLAN:
6188         case NL80211_IFTYPE_MESH_POINT:
6189         case NL80211_IFTYPE_P2P_GO:
6190         case NL80211_IFTYPE_P2P_DEVICE:
6191                 break;
6192         default:
6193                 return -EOPNOTSUPP;
6194         }
6195
6196         if (info->attrs[NL80211_ATTR_DURATION]) {
6197                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6198                         return -EINVAL;
6199                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6200
6201                 /*
6202                  * We should wait on the channel for at least a minimum amount
6203                  * of time (10ms) but no longer than the driver supports.
6204                  */
6205                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6206                     wait > rdev->wiphy.max_remain_on_channel_duration)
6207                         return -EINVAL;
6208
6209         }
6210
6211         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
6212                 if (!nl80211_valid_channel_type(info, &channel_type))
6213                         return -EINVAL;
6214                 channel_type_valid = true;
6215         }
6216
6217         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
6218
6219         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
6220                 return -EINVAL;
6221
6222         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
6223
6224         freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6225         chan = rdev_freq_to_chan(rdev, freq, channel_type);
6226         if (chan == NULL)
6227                 return -EINVAL;
6228
6229         if (!dont_wait_for_ack) {
6230                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6231                 if (!msg)
6232                         return -ENOMEM;
6233
6234                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6235                                      NL80211_CMD_FRAME);
6236
6237                 if (IS_ERR(hdr)) {
6238                         err = PTR_ERR(hdr);
6239                         goto free_msg;
6240                 }
6241         }
6242
6243         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chan, offchan, channel_type,
6244                                     channel_type_valid, wait,
6245                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
6246                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
6247                                     no_cck, dont_wait_for_ack, &cookie);
6248         if (err)
6249                 goto free_msg;
6250
6251         if (msg) {
6252                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6253                         goto nla_put_failure;
6254
6255                 genlmsg_end(msg, hdr);
6256                 return genlmsg_reply(msg, info);
6257         }
6258
6259         return 0;
6260
6261  nla_put_failure:
6262         err = -ENOBUFS;
6263  free_msg:
6264         nlmsg_free(msg);
6265         return err;
6266 }
6267
6268 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
6269 {
6270         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6271         struct wireless_dev *wdev = info->user_ptr[1];
6272         u64 cookie;
6273
6274         if (!info->attrs[NL80211_ATTR_COOKIE])
6275                 return -EINVAL;
6276
6277         if (!rdev->ops->mgmt_tx_cancel_wait)
6278                 return -EOPNOTSUPP;
6279
6280         switch (wdev->iftype) {
6281         case NL80211_IFTYPE_STATION:
6282         case NL80211_IFTYPE_ADHOC:
6283         case NL80211_IFTYPE_P2P_CLIENT:
6284         case NL80211_IFTYPE_AP:
6285         case NL80211_IFTYPE_AP_VLAN:
6286         case NL80211_IFTYPE_P2P_GO:
6287         case NL80211_IFTYPE_P2P_DEVICE:
6288                 break;
6289         default:
6290                 return -EOPNOTSUPP;
6291         }
6292
6293         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
6294
6295         return rdev->ops->mgmt_tx_cancel_wait(&rdev->wiphy, wdev, cookie);
6296 }
6297
6298 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
6299 {
6300         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6301         struct wireless_dev *wdev;
6302         struct net_device *dev = info->user_ptr[1];
6303         u8 ps_state;
6304         bool state;
6305         int err;
6306
6307         if (!info->attrs[NL80211_ATTR_PS_STATE])
6308                 return -EINVAL;
6309
6310         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
6311
6312         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
6313                 return -EINVAL;
6314
6315         wdev = dev->ieee80211_ptr;
6316
6317         if (!rdev->ops->set_power_mgmt)
6318                 return -EOPNOTSUPP;
6319
6320         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
6321
6322         if (state == wdev->ps)
6323                 return 0;
6324
6325         err = rdev->ops->set_power_mgmt(wdev->wiphy, dev, state,
6326                                         wdev->ps_timeout);
6327         if (!err)
6328                 wdev->ps = state;
6329         return err;
6330 }
6331
6332 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
6333 {
6334         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6335         enum nl80211_ps_state ps_state;
6336         struct wireless_dev *wdev;
6337         struct net_device *dev = info->user_ptr[1];
6338         struct sk_buff *msg;
6339         void *hdr;
6340         int err;
6341
6342         wdev = dev->ieee80211_ptr;
6343
6344         if (!rdev->ops->set_power_mgmt)
6345                 return -EOPNOTSUPP;
6346
6347         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6348         if (!msg)
6349                 return -ENOMEM;
6350
6351         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6352                              NL80211_CMD_GET_POWER_SAVE);
6353         if (!hdr) {
6354                 err = -ENOBUFS;
6355                 goto free_msg;
6356         }
6357
6358         if (wdev->ps)
6359                 ps_state = NL80211_PS_ENABLED;
6360         else
6361                 ps_state = NL80211_PS_DISABLED;
6362
6363         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
6364                 goto nla_put_failure;
6365
6366         genlmsg_end(msg, hdr);
6367         return genlmsg_reply(msg, info);
6368
6369  nla_put_failure:
6370         err = -ENOBUFS;
6371  free_msg:
6372         nlmsg_free(msg);
6373         return err;
6374 }
6375
6376 static struct nla_policy
6377 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
6378         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
6379         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
6380         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
6381         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
6382         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
6383         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
6384 };
6385
6386 static int nl80211_set_cqm_txe(struct genl_info *info,
6387                                 u32 rate, u32 pkts, u32 intvl)
6388 {
6389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6390         struct wireless_dev *wdev;
6391         struct net_device *dev = info->user_ptr[1];
6392
6393         if ((rate < 0 || rate > 100) ||
6394             (intvl < 0 || intvl > NL80211_CQM_TXE_MAX_INTVL))
6395                 return -EINVAL;
6396
6397         wdev = dev->ieee80211_ptr;
6398
6399         if (!rdev->ops->set_cqm_txe_config)
6400                 return -EOPNOTSUPP;
6401
6402         if (wdev->iftype != NL80211_IFTYPE_STATION &&
6403             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6404                 return -EOPNOTSUPP;
6405
6406         return rdev->ops->set_cqm_txe_config(wdev->wiphy, dev,
6407                                              rate, pkts, intvl);
6408 }
6409
6410 static int nl80211_set_cqm_rssi(struct genl_info *info,
6411                                 s32 threshold, u32 hysteresis)
6412 {
6413         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6414         struct wireless_dev *wdev;
6415         struct net_device *dev = info->user_ptr[1];
6416
6417         if (threshold > 0)
6418                 return -EINVAL;
6419
6420         wdev = dev->ieee80211_ptr;
6421
6422         if (!rdev->ops->set_cqm_rssi_config)
6423                 return -EOPNOTSUPP;
6424
6425         if (wdev->iftype != NL80211_IFTYPE_STATION &&
6426             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
6427                 return -EOPNOTSUPP;
6428
6429         return rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
6430                                               threshold, hysteresis);
6431 }
6432
6433 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
6434 {
6435         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
6436         struct nlattr *cqm;
6437         int err;
6438
6439         cqm = info->attrs[NL80211_ATTR_CQM];
6440         if (!cqm) {
6441                 err = -EINVAL;
6442                 goto out;
6443         }
6444
6445         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
6446                                nl80211_attr_cqm_policy);
6447         if (err)
6448                 goto out;
6449
6450         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
6451             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
6452                 s32 threshold;
6453                 u32 hysteresis;
6454                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
6455                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
6456                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
6457         } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
6458                    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
6459                    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
6460                 u32 rate, pkts, intvl;
6461                 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
6462                 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
6463                 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
6464                 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
6465         } else
6466                 err = -EINVAL;
6467
6468 out:
6469         return err;
6470 }
6471
6472 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
6473 {
6474         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6475         struct net_device *dev = info->user_ptr[1];
6476         struct mesh_config cfg;
6477         struct mesh_setup setup;
6478         int err;
6479
6480         /* start with default */
6481         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
6482         memcpy(&setup, &default_mesh_setup, sizeof(setup));
6483
6484         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
6485                 /* and parse parameters if given */
6486                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
6487                 if (err)
6488                         return err;
6489         }
6490
6491         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
6492             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
6493                 return -EINVAL;
6494
6495         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
6496         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
6497
6498         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6499             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
6500                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6501                         return -EINVAL;
6502
6503         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
6504                 /* parse additional setup parameters if given */
6505                 err = nl80211_parse_mesh_setup(info, &setup);
6506                 if (err)
6507                         return err;
6508         }
6509
6510         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6511                 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
6512
6513                 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE] &&
6514                     !nl80211_valid_channel_type(info, &channel_type))
6515                         return -EINVAL;
6516
6517                 setup.channel = rdev_freq_to_chan(rdev,
6518                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]),
6519                         channel_type);
6520                 if (!setup.channel)
6521                         return -EINVAL;
6522                 setup.channel_type = channel_type;
6523         } else {
6524                 /* cfg80211_join_mesh() will sort it out */
6525                 setup.channel = NULL;
6526         }
6527
6528         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
6529 }
6530
6531 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
6532 {
6533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6534         struct net_device *dev = info->user_ptr[1];
6535
6536         return cfg80211_leave_mesh(rdev, dev);
6537 }
6538
6539 #ifdef CONFIG_PM
6540 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
6541 {
6542         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6543         struct sk_buff *msg;
6544         void *hdr;
6545
6546         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6547                 return -EOPNOTSUPP;
6548
6549         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6550         if (!msg)
6551                 return -ENOMEM;
6552
6553         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6554                              NL80211_CMD_GET_WOWLAN);
6555         if (!hdr)
6556                 goto nla_put_failure;
6557
6558         if (rdev->wowlan) {
6559                 struct nlattr *nl_wowlan;
6560
6561                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
6562                 if (!nl_wowlan)
6563                         goto nla_put_failure;
6564
6565                 if ((rdev->wowlan->any &&
6566                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
6567                     (rdev->wowlan->disconnect &&
6568                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
6569                     (rdev->wowlan->magic_pkt &&
6570                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
6571                     (rdev->wowlan->gtk_rekey_failure &&
6572                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
6573                     (rdev->wowlan->eap_identity_req &&
6574                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
6575                     (rdev->wowlan->four_way_handshake &&
6576                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
6577                     (rdev->wowlan->rfkill_release &&
6578                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
6579                         goto nla_put_failure;
6580                 if (rdev->wowlan->n_patterns) {
6581                         struct nlattr *nl_pats, *nl_pat;
6582                         int i, pat_len;
6583
6584                         nl_pats = nla_nest_start(msg,
6585                                         NL80211_WOWLAN_TRIG_PKT_PATTERN);
6586                         if (!nl_pats)
6587                                 goto nla_put_failure;
6588
6589                         for (i = 0; i < rdev->wowlan->n_patterns; i++) {
6590                                 nl_pat = nla_nest_start(msg, i + 1);
6591                                 if (!nl_pat)
6592                                         goto nla_put_failure;
6593                                 pat_len = rdev->wowlan->patterns[i].pattern_len;
6594                                 if (nla_put(msg, NL80211_WOWLAN_PKTPAT_MASK,
6595                                             DIV_ROUND_UP(pat_len, 8),
6596                                             rdev->wowlan->patterns[i].mask) ||
6597                                     nla_put(msg, NL80211_WOWLAN_PKTPAT_PATTERN,
6598                                             pat_len,
6599                                             rdev->wowlan->patterns[i].pattern))
6600                                         goto nla_put_failure;
6601                                 nla_nest_end(msg, nl_pat);
6602                         }
6603                         nla_nest_end(msg, nl_pats);
6604                 }
6605
6606                 nla_nest_end(msg, nl_wowlan);
6607         }
6608
6609         genlmsg_end(msg, hdr);
6610         return genlmsg_reply(msg, info);
6611
6612 nla_put_failure:
6613         nlmsg_free(msg);
6614         return -ENOBUFS;
6615 }
6616
6617 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
6618 {
6619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6620         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
6621         struct cfg80211_wowlan new_triggers = {};
6622         struct cfg80211_wowlan *ntrig;
6623         struct wiphy_wowlan_support *wowlan = &rdev->wiphy.wowlan;
6624         int err, i;
6625         bool prev_enabled = rdev->wowlan;
6626
6627         if (!rdev->wiphy.wowlan.flags && !rdev->wiphy.wowlan.n_patterns)
6628                 return -EOPNOTSUPP;
6629
6630         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
6631                 cfg80211_rdev_free_wowlan(rdev);
6632                 rdev->wowlan = NULL;
6633                 goto set_wakeup;
6634         }
6635
6636         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
6637                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6638                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
6639                         nl80211_wowlan_policy);
6640         if (err)
6641                 return err;
6642
6643         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
6644                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
6645                         return -EINVAL;
6646                 new_triggers.any = true;
6647         }
6648
6649         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
6650                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
6651                         return -EINVAL;
6652                 new_triggers.disconnect = true;
6653         }
6654
6655         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
6656                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
6657                         return -EINVAL;
6658                 new_triggers.magic_pkt = true;
6659         }
6660
6661         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
6662                 return -EINVAL;
6663
6664         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
6665                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
6666                         return -EINVAL;
6667                 new_triggers.gtk_rekey_failure = true;
6668         }
6669
6670         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
6671                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
6672                         return -EINVAL;
6673                 new_triggers.eap_identity_req = true;
6674         }
6675
6676         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
6677                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
6678                         return -EINVAL;
6679                 new_triggers.four_way_handshake = true;
6680         }
6681
6682         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
6683                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
6684                         return -EINVAL;
6685                 new_triggers.rfkill_release = true;
6686         }
6687
6688         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
6689                 struct nlattr *pat;
6690                 int n_patterns = 0;
6691                 int rem, pat_len, mask_len;
6692                 struct nlattr *pat_tb[NUM_NL80211_WOWLAN_PKTPAT];
6693
6694                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6695                                     rem)
6696                         n_patterns++;
6697                 if (n_patterns > wowlan->n_patterns)
6698                         return -EINVAL;
6699
6700                 new_triggers.patterns = kcalloc(n_patterns,
6701                                                 sizeof(new_triggers.patterns[0]),
6702                                                 GFP_KERNEL);
6703                 if (!new_triggers.patterns)
6704                         return -ENOMEM;
6705
6706                 new_triggers.n_patterns = n_patterns;
6707                 i = 0;
6708
6709                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
6710                                     rem) {
6711                         nla_parse(pat_tb, MAX_NL80211_WOWLAN_PKTPAT,
6712                                   nla_data(pat), nla_len(pat), NULL);
6713                         err = -EINVAL;
6714                         if (!pat_tb[NL80211_WOWLAN_PKTPAT_MASK] ||
6715                             !pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN])
6716                                 goto error;
6717                         pat_len = nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]);
6718                         mask_len = DIV_ROUND_UP(pat_len, 8);
6719                         if (nla_len(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]) !=
6720                             mask_len)
6721                                 goto error;
6722                         if (pat_len > wowlan->pattern_max_len ||
6723                             pat_len < wowlan->pattern_min_len)
6724                                 goto error;
6725
6726                         new_triggers.patterns[i].mask =
6727                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
6728                         if (!new_triggers.patterns[i].mask) {
6729                                 err = -ENOMEM;
6730                                 goto error;
6731                         }
6732                         new_triggers.patterns[i].pattern =
6733                                 new_triggers.patterns[i].mask + mask_len;
6734                         memcpy(new_triggers.patterns[i].mask,
6735                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_MASK]),
6736                                mask_len);
6737                         new_triggers.patterns[i].pattern_len = pat_len;
6738                         memcpy(new_triggers.patterns[i].pattern,
6739                                nla_data(pat_tb[NL80211_WOWLAN_PKTPAT_PATTERN]),
6740                                pat_len);
6741                         i++;
6742                 }
6743         }
6744
6745         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
6746         if (!ntrig) {
6747                 err = -ENOMEM;
6748                 goto error;
6749         }
6750         cfg80211_rdev_free_wowlan(rdev);
6751         rdev->wowlan = ntrig;
6752
6753  set_wakeup:
6754         if (rdev->ops->set_wakeup && prev_enabled != !!rdev->wowlan)
6755                 rdev->ops->set_wakeup(&rdev->wiphy, rdev->wowlan);
6756
6757         return 0;
6758  error:
6759         for (i = 0; i < new_triggers.n_patterns; i++)
6760                 kfree(new_triggers.patterns[i].mask);
6761         kfree(new_triggers.patterns);
6762         return err;
6763 }
6764 #endif
6765
6766 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
6767 {
6768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6769         struct net_device *dev = info->user_ptr[1];
6770         struct wireless_dev *wdev = dev->ieee80211_ptr;
6771         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
6772         struct cfg80211_gtk_rekey_data rekey_data;
6773         int err;
6774
6775         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
6776                 return -EINVAL;
6777
6778         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
6779                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
6780                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
6781                         nl80211_rekey_policy);
6782         if (err)
6783                 return err;
6784
6785         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
6786                 return -ERANGE;
6787         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
6788                 return -ERANGE;
6789         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
6790                 return -ERANGE;
6791
6792         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
6793                NL80211_KEK_LEN);
6794         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
6795                NL80211_KCK_LEN);
6796         memcpy(rekey_data.replay_ctr,
6797                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
6798                NL80211_REPLAY_CTR_LEN);
6799
6800         wdev_lock(wdev);
6801         if (!wdev->current_bss) {
6802                 err = -ENOTCONN;
6803                 goto out;
6804         }
6805
6806         if (!rdev->ops->set_rekey_data) {
6807                 err = -EOPNOTSUPP;
6808                 goto out;
6809         }
6810
6811         err = rdev->ops->set_rekey_data(&rdev->wiphy, dev, &rekey_data);
6812  out:
6813         wdev_unlock(wdev);
6814         return err;
6815 }
6816
6817 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
6818                                              struct genl_info *info)
6819 {
6820         struct net_device *dev = info->user_ptr[1];
6821         struct wireless_dev *wdev = dev->ieee80211_ptr;
6822
6823         if (wdev->iftype != NL80211_IFTYPE_AP &&
6824             wdev->iftype != NL80211_IFTYPE_P2P_GO)
6825                 return -EINVAL;
6826
6827         if (wdev->ap_unexpected_nlportid)
6828                 return -EBUSY;
6829
6830         wdev->ap_unexpected_nlportid = info->snd_portid;
6831         return 0;
6832 }
6833
6834 static int nl80211_probe_client(struct sk_buff *skb,
6835                                 struct genl_info *info)
6836 {
6837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6838         struct net_device *dev = info->user_ptr[1];
6839         struct wireless_dev *wdev = dev->ieee80211_ptr;
6840         struct sk_buff *msg;
6841         void *hdr;
6842         const u8 *addr;
6843         u64 cookie;
6844         int err;
6845
6846         if (wdev->iftype != NL80211_IFTYPE_AP &&
6847             wdev->iftype != NL80211_IFTYPE_P2P_GO)
6848                 return -EOPNOTSUPP;
6849
6850         if (!info->attrs[NL80211_ATTR_MAC])
6851                 return -EINVAL;
6852
6853         if (!rdev->ops->probe_client)
6854                 return -EOPNOTSUPP;
6855
6856         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6857         if (!msg)
6858                 return -ENOMEM;
6859
6860         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6861                              NL80211_CMD_PROBE_CLIENT);
6862
6863         if (IS_ERR(hdr)) {
6864                 err = PTR_ERR(hdr);
6865                 goto free_msg;
6866         }
6867
6868         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6869
6870         err = rdev->ops->probe_client(&rdev->wiphy, dev, addr, &cookie);
6871         if (err)
6872                 goto free_msg;
6873
6874         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
6875                 goto nla_put_failure;
6876
6877         genlmsg_end(msg, hdr);
6878
6879         return genlmsg_reply(msg, info);
6880
6881  nla_put_failure:
6882         err = -ENOBUFS;
6883  free_msg:
6884         nlmsg_free(msg);
6885         return err;
6886 }
6887
6888 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
6889 {
6890         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6891
6892         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
6893                 return -EOPNOTSUPP;
6894
6895         if (rdev->ap_beacons_nlportid)
6896                 return -EBUSY;
6897
6898         rdev->ap_beacons_nlportid = info->snd_portid;
6899
6900         return 0;
6901 }
6902
6903 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
6904 {
6905         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6906         struct wireless_dev *wdev = info->user_ptr[1];
6907         int err;
6908
6909         if (!rdev->ops->start_p2p_device)
6910                 return -EOPNOTSUPP;
6911
6912         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6913                 return -EOPNOTSUPP;
6914
6915         if (wdev->p2p_started)
6916                 return 0;
6917
6918         mutex_lock(&rdev->devlist_mtx);
6919         err = cfg80211_can_add_interface(rdev, wdev->iftype);
6920         mutex_unlock(&rdev->devlist_mtx);
6921         if (err)
6922                 return err;
6923
6924         err = rdev->ops->start_p2p_device(&rdev->wiphy, wdev);
6925         if (err)
6926                 return err;
6927
6928         wdev->p2p_started = true;
6929         mutex_lock(&rdev->devlist_mtx);
6930         rdev->opencount++;
6931         mutex_unlock(&rdev->devlist_mtx);
6932
6933         return 0;
6934 }
6935
6936 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
6937 {
6938         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6939         struct wireless_dev *wdev = info->user_ptr[1];
6940
6941         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
6942                 return -EOPNOTSUPP;
6943
6944         if (!rdev->ops->stop_p2p_device)
6945                 return -EOPNOTSUPP;
6946
6947         if (!wdev->p2p_started)
6948                 return 0;
6949
6950         rdev->ops->stop_p2p_device(&rdev->wiphy, wdev);
6951         wdev->p2p_started = false;
6952
6953         mutex_lock(&rdev->devlist_mtx);
6954         rdev->opencount--;
6955         mutex_unlock(&rdev->devlist_mtx);
6956
6957         if (WARN_ON(rdev->scan_req && rdev->scan_req->wdev == wdev)) {
6958                 rdev->scan_req->aborted = true;
6959                 ___cfg80211_scan_done(rdev, true);
6960         }
6961
6962         return 0;
6963 }
6964
6965 #define NL80211_FLAG_NEED_WIPHY         0x01
6966 #define NL80211_FLAG_NEED_NETDEV        0x02
6967 #define NL80211_FLAG_NEED_RTNL          0x04
6968 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
6969 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
6970                                          NL80211_FLAG_CHECK_NETDEV_UP)
6971 #define NL80211_FLAG_NEED_WDEV          0x10
6972 /* If a netdev is associated, it must be UP, P2P must be started */
6973 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
6974                                          NL80211_FLAG_CHECK_NETDEV_UP)
6975
6976 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
6977                             struct genl_info *info)
6978 {
6979         struct cfg80211_registered_device *rdev;
6980         struct wireless_dev *wdev;
6981         struct net_device *dev;
6982         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
6983
6984         if (rtnl)
6985                 rtnl_lock();
6986
6987         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
6988                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
6989                 if (IS_ERR(rdev)) {
6990                         if (rtnl)
6991                                 rtnl_unlock();
6992                         return PTR_ERR(rdev);
6993                 }
6994                 info->user_ptr[0] = rdev;
6995         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
6996                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
6997                 mutex_lock(&cfg80211_mutex);
6998                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
6999                                                   info->attrs);
7000                 if (IS_ERR(wdev)) {
7001                         mutex_unlock(&cfg80211_mutex);
7002                         if (rtnl)
7003                                 rtnl_unlock();
7004                         return PTR_ERR(wdev);
7005                 }
7006
7007                 dev = wdev->netdev;
7008                 rdev = wiphy_to_dev(wdev->wiphy);
7009
7010                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
7011                         if (!dev) {
7012                                 mutex_unlock(&cfg80211_mutex);
7013                                 if (rtnl)
7014                                         rtnl_unlock();
7015                                 return -EINVAL;
7016                         }
7017
7018                         info->user_ptr[1] = dev;
7019                 } else {
7020                         info->user_ptr[1] = wdev;
7021                 }
7022
7023                 if (dev) {
7024                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
7025                             !netif_running(dev)) {
7026                                 mutex_unlock(&cfg80211_mutex);
7027                                 if (rtnl)
7028                                         rtnl_unlock();
7029                                 return -ENETDOWN;
7030                         }
7031
7032                         dev_hold(dev);
7033                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
7034                         if (!wdev->p2p_started) {
7035                                 mutex_unlock(&cfg80211_mutex);
7036                                 if (rtnl)
7037                                         rtnl_unlock();
7038                                 return -ENETDOWN;
7039                         }
7040                 }
7041
7042                 cfg80211_lock_rdev(rdev);
7043
7044                 mutex_unlock(&cfg80211_mutex);
7045
7046                 info->user_ptr[0] = rdev;
7047         }
7048
7049         return 0;
7050 }
7051
7052 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
7053                               struct genl_info *info)
7054 {
7055         if (info->user_ptr[0])
7056                 cfg80211_unlock_rdev(info->user_ptr[0]);
7057         if (info->user_ptr[1]) {
7058                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
7059                         struct wireless_dev *wdev = info->user_ptr[1];
7060
7061                         if (wdev->netdev)
7062                                 dev_put(wdev->netdev);
7063                 } else {
7064                         dev_put(info->user_ptr[1]);
7065                 }
7066         }
7067         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
7068                 rtnl_unlock();
7069 }
7070
7071 static struct genl_ops nl80211_ops[] = {
7072         {
7073                 .cmd = NL80211_CMD_GET_WIPHY,
7074                 .doit = nl80211_get_wiphy,
7075                 .dumpit = nl80211_dump_wiphy,
7076                 .policy = nl80211_policy,
7077                 /* can be retrieved by unprivileged users */
7078                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
7079         },
7080         {
7081                 .cmd = NL80211_CMD_SET_WIPHY,
7082                 .doit = nl80211_set_wiphy,
7083                 .policy = nl80211_policy,
7084                 .flags = GENL_ADMIN_PERM,
7085                 .internal_flags = NL80211_FLAG_NEED_RTNL,
7086         },
7087         {
7088                 .cmd = NL80211_CMD_GET_INTERFACE,
7089                 .doit = nl80211_get_interface,
7090                 .dumpit = nl80211_dump_interface,
7091                 .policy = nl80211_policy,
7092                 /* can be retrieved by unprivileged users */
7093                 .internal_flags = NL80211_FLAG_NEED_WDEV,
7094         },
7095         {
7096                 .cmd = NL80211_CMD_SET_INTERFACE,
7097                 .doit = nl80211_set_interface,
7098                 .policy = nl80211_policy,
7099                 .flags = GENL_ADMIN_PERM,
7100                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7101                                   NL80211_FLAG_NEED_RTNL,
7102         },
7103         {
7104                 .cmd = NL80211_CMD_NEW_INTERFACE,
7105                 .doit = nl80211_new_interface,
7106                 .policy = nl80211_policy,
7107                 .flags = GENL_ADMIN_PERM,
7108                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7109                                   NL80211_FLAG_NEED_RTNL,
7110         },
7111         {
7112                 .cmd = NL80211_CMD_DEL_INTERFACE,
7113                 .doit = nl80211_del_interface,
7114                 .policy = nl80211_policy,
7115                 .flags = GENL_ADMIN_PERM,
7116                 .internal_flags = NL80211_FLAG_NEED_WDEV |
7117                                   NL80211_FLAG_NEED_RTNL,
7118         },
7119         {
7120                 .cmd = NL80211_CMD_GET_KEY,
7121                 .doit = nl80211_get_key,
7122                 .policy = nl80211_policy,
7123                 .flags = GENL_ADMIN_PERM,
7124                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7125                                   NL80211_FLAG_NEED_RTNL,
7126         },
7127         {
7128                 .cmd = NL80211_CMD_SET_KEY,
7129                 .doit = nl80211_set_key,
7130                 .policy = nl80211_policy,
7131                 .flags = GENL_ADMIN_PERM,
7132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7133                                   NL80211_FLAG_NEED_RTNL,
7134         },
7135         {
7136                 .cmd = NL80211_CMD_NEW_KEY,
7137                 .doit = nl80211_new_key,
7138                 .policy = nl80211_policy,
7139                 .flags = GENL_ADMIN_PERM,
7140                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7141                                   NL80211_FLAG_NEED_RTNL,
7142         },
7143         {
7144                 .cmd = NL80211_CMD_DEL_KEY,
7145                 .doit = nl80211_del_key,
7146                 .policy = nl80211_policy,
7147                 .flags = GENL_ADMIN_PERM,
7148                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7149                                   NL80211_FLAG_NEED_RTNL,
7150         },
7151         {
7152                 .cmd = NL80211_CMD_SET_BEACON,
7153                 .policy = nl80211_policy,
7154                 .flags = GENL_ADMIN_PERM,
7155                 .doit = nl80211_set_beacon,
7156                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7157                                   NL80211_FLAG_NEED_RTNL,
7158         },
7159         {
7160                 .cmd = NL80211_CMD_START_AP,
7161                 .policy = nl80211_policy,
7162                 .flags = GENL_ADMIN_PERM,
7163                 .doit = nl80211_start_ap,
7164                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7165                                   NL80211_FLAG_NEED_RTNL,
7166         },
7167         {
7168                 .cmd = NL80211_CMD_STOP_AP,
7169                 .policy = nl80211_policy,
7170                 .flags = GENL_ADMIN_PERM,
7171                 .doit = nl80211_stop_ap,
7172                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7173                                   NL80211_FLAG_NEED_RTNL,
7174         },
7175         {
7176                 .cmd = NL80211_CMD_GET_STATION,
7177                 .doit = nl80211_get_station,
7178                 .dumpit = nl80211_dump_station,
7179                 .policy = nl80211_policy,
7180                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7181                                   NL80211_FLAG_NEED_RTNL,
7182         },
7183         {
7184                 .cmd = NL80211_CMD_SET_STATION,
7185                 .doit = nl80211_set_station,
7186                 .policy = nl80211_policy,
7187                 .flags = GENL_ADMIN_PERM,
7188                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7189                                   NL80211_FLAG_NEED_RTNL,
7190         },
7191         {
7192                 .cmd = NL80211_CMD_NEW_STATION,
7193                 .doit = nl80211_new_station,
7194                 .policy = nl80211_policy,
7195                 .flags = GENL_ADMIN_PERM,
7196                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7197                                   NL80211_FLAG_NEED_RTNL,
7198         },
7199         {
7200                 .cmd = NL80211_CMD_DEL_STATION,
7201                 .doit = nl80211_del_station,
7202                 .policy = nl80211_policy,
7203                 .flags = GENL_ADMIN_PERM,
7204                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7205                                   NL80211_FLAG_NEED_RTNL,
7206         },
7207         {
7208                 .cmd = NL80211_CMD_GET_MPATH,
7209                 .doit = nl80211_get_mpath,
7210                 .dumpit = nl80211_dump_mpath,
7211                 .policy = nl80211_policy,
7212                 .flags = GENL_ADMIN_PERM,
7213                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7214                                   NL80211_FLAG_NEED_RTNL,
7215         },
7216         {
7217                 .cmd = NL80211_CMD_SET_MPATH,
7218                 .doit = nl80211_set_mpath,
7219                 .policy = nl80211_policy,
7220                 .flags = GENL_ADMIN_PERM,
7221                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7222                                   NL80211_FLAG_NEED_RTNL,
7223         },
7224         {
7225                 .cmd = NL80211_CMD_NEW_MPATH,
7226                 .doit = nl80211_new_mpath,
7227                 .policy = nl80211_policy,
7228                 .flags = GENL_ADMIN_PERM,
7229                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7230                                   NL80211_FLAG_NEED_RTNL,
7231         },
7232         {
7233                 .cmd = NL80211_CMD_DEL_MPATH,
7234                 .doit = nl80211_del_mpath,
7235                 .policy = nl80211_policy,
7236                 .flags = GENL_ADMIN_PERM,
7237                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7238                                   NL80211_FLAG_NEED_RTNL,
7239         },
7240         {
7241                 .cmd = NL80211_CMD_SET_BSS,
7242                 .doit = nl80211_set_bss,
7243                 .policy = nl80211_policy,
7244                 .flags = GENL_ADMIN_PERM,
7245                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7246                                   NL80211_FLAG_NEED_RTNL,
7247         },
7248         {
7249                 .cmd = NL80211_CMD_GET_REG,
7250                 .doit = nl80211_get_reg,
7251                 .policy = nl80211_policy,
7252                 /* can be retrieved by unprivileged users */
7253         },
7254         {
7255                 .cmd = NL80211_CMD_SET_REG,
7256                 .doit = nl80211_set_reg,
7257                 .policy = nl80211_policy,
7258                 .flags = GENL_ADMIN_PERM,
7259         },
7260         {
7261                 .cmd = NL80211_CMD_REQ_SET_REG,
7262                 .doit = nl80211_req_set_reg,
7263                 .policy = nl80211_policy,
7264                 .flags = GENL_ADMIN_PERM,
7265         },
7266         {
7267                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
7268                 .doit = nl80211_get_mesh_config,
7269                 .policy = nl80211_policy,
7270                 /* can be retrieved by unprivileged users */
7271                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7272                                   NL80211_FLAG_NEED_RTNL,
7273         },
7274         {
7275                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
7276                 .doit = nl80211_update_mesh_config,
7277                 .policy = nl80211_policy,
7278                 .flags = GENL_ADMIN_PERM,
7279                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7280                                   NL80211_FLAG_NEED_RTNL,
7281         },
7282         {
7283                 .cmd = NL80211_CMD_TRIGGER_SCAN,
7284                 .doit = nl80211_trigger_scan,
7285                 .policy = nl80211_policy,
7286                 .flags = GENL_ADMIN_PERM,
7287                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7288                                   NL80211_FLAG_NEED_RTNL,
7289         },
7290         {
7291                 .cmd = NL80211_CMD_GET_SCAN,
7292                 .policy = nl80211_policy,
7293                 .dumpit = nl80211_dump_scan,
7294         },
7295         {
7296                 .cmd = NL80211_CMD_START_SCHED_SCAN,
7297                 .doit = nl80211_start_sched_scan,
7298                 .policy = nl80211_policy,
7299                 .flags = GENL_ADMIN_PERM,
7300                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7301                                   NL80211_FLAG_NEED_RTNL,
7302         },
7303         {
7304                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
7305                 .doit = nl80211_stop_sched_scan,
7306                 .policy = nl80211_policy,
7307                 .flags = GENL_ADMIN_PERM,
7308                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7309                                   NL80211_FLAG_NEED_RTNL,
7310         },
7311         {
7312                 .cmd = NL80211_CMD_AUTHENTICATE,
7313                 .doit = nl80211_authenticate,
7314                 .policy = nl80211_policy,
7315                 .flags = GENL_ADMIN_PERM,
7316                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7317                                   NL80211_FLAG_NEED_RTNL,
7318         },
7319         {
7320                 .cmd = NL80211_CMD_ASSOCIATE,
7321                 .doit = nl80211_associate,
7322                 .policy = nl80211_policy,
7323                 .flags = GENL_ADMIN_PERM,
7324                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7325                                   NL80211_FLAG_NEED_RTNL,
7326         },
7327         {
7328                 .cmd = NL80211_CMD_DEAUTHENTICATE,
7329                 .doit = nl80211_deauthenticate,
7330                 .policy = nl80211_policy,
7331                 .flags = GENL_ADMIN_PERM,
7332                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7333                                   NL80211_FLAG_NEED_RTNL,
7334         },
7335         {
7336                 .cmd = NL80211_CMD_DISASSOCIATE,
7337                 .doit = nl80211_disassociate,
7338                 .policy = nl80211_policy,
7339                 .flags = GENL_ADMIN_PERM,
7340                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7341                                   NL80211_FLAG_NEED_RTNL,
7342         },
7343         {
7344                 .cmd = NL80211_CMD_JOIN_IBSS,
7345                 .doit = nl80211_join_ibss,
7346                 .policy = nl80211_policy,
7347                 .flags = GENL_ADMIN_PERM,
7348                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7349                                   NL80211_FLAG_NEED_RTNL,
7350         },
7351         {
7352                 .cmd = NL80211_CMD_LEAVE_IBSS,
7353                 .doit = nl80211_leave_ibss,
7354                 .policy = nl80211_policy,
7355                 .flags = GENL_ADMIN_PERM,
7356                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7357                                   NL80211_FLAG_NEED_RTNL,
7358         },
7359 #ifdef CONFIG_NL80211_TESTMODE
7360         {
7361                 .cmd = NL80211_CMD_TESTMODE,
7362                 .doit = nl80211_testmode_do,
7363                 .dumpit = nl80211_testmode_dump,
7364                 .policy = nl80211_policy,
7365                 .flags = GENL_ADMIN_PERM,
7366                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7367                                   NL80211_FLAG_NEED_RTNL,
7368         },
7369 #endif
7370         {
7371                 .cmd = NL80211_CMD_CONNECT,
7372                 .doit = nl80211_connect,
7373                 .policy = nl80211_policy,
7374                 .flags = GENL_ADMIN_PERM,
7375                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7376                                   NL80211_FLAG_NEED_RTNL,
7377         },
7378         {
7379                 .cmd = NL80211_CMD_DISCONNECT,
7380                 .doit = nl80211_disconnect,
7381                 .policy = nl80211_policy,
7382                 .flags = GENL_ADMIN_PERM,
7383                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7384                                   NL80211_FLAG_NEED_RTNL,
7385         },
7386         {
7387                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
7388                 .doit = nl80211_wiphy_netns,
7389                 .policy = nl80211_policy,
7390                 .flags = GENL_ADMIN_PERM,
7391                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7392                                   NL80211_FLAG_NEED_RTNL,
7393         },
7394         {
7395                 .cmd = NL80211_CMD_GET_SURVEY,
7396                 .policy = nl80211_policy,
7397                 .dumpit = nl80211_dump_survey,
7398         },
7399         {
7400                 .cmd = NL80211_CMD_SET_PMKSA,
7401                 .doit = nl80211_setdel_pmksa,
7402                 .policy = nl80211_policy,
7403                 .flags = GENL_ADMIN_PERM,
7404                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7405                                   NL80211_FLAG_NEED_RTNL,
7406         },
7407         {
7408                 .cmd = NL80211_CMD_DEL_PMKSA,
7409                 .doit = nl80211_setdel_pmksa,
7410                 .policy = nl80211_policy,
7411                 .flags = GENL_ADMIN_PERM,
7412                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7413                                   NL80211_FLAG_NEED_RTNL,
7414         },
7415         {
7416                 .cmd = NL80211_CMD_FLUSH_PMKSA,
7417                 .doit = nl80211_flush_pmksa,
7418                 .policy = nl80211_policy,
7419                 .flags = GENL_ADMIN_PERM,
7420                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7421                                   NL80211_FLAG_NEED_RTNL,
7422         },
7423         {
7424                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
7425                 .doit = nl80211_remain_on_channel,
7426                 .policy = nl80211_policy,
7427                 .flags = GENL_ADMIN_PERM,
7428                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7429                                   NL80211_FLAG_NEED_RTNL,
7430         },
7431         {
7432                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
7433                 .doit = nl80211_cancel_remain_on_channel,
7434                 .policy = nl80211_policy,
7435                 .flags = GENL_ADMIN_PERM,
7436                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7437                                   NL80211_FLAG_NEED_RTNL,
7438         },
7439         {
7440                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
7441                 .doit = nl80211_set_tx_bitrate_mask,
7442                 .policy = nl80211_policy,
7443                 .flags = GENL_ADMIN_PERM,
7444                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7445                                   NL80211_FLAG_NEED_RTNL,
7446         },
7447         {
7448                 .cmd = NL80211_CMD_REGISTER_FRAME,
7449                 .doit = nl80211_register_mgmt,
7450                 .policy = nl80211_policy,
7451                 .flags = GENL_ADMIN_PERM,
7452                 .internal_flags = NL80211_FLAG_NEED_WDEV |
7453                                   NL80211_FLAG_NEED_RTNL,
7454         },
7455         {
7456                 .cmd = NL80211_CMD_FRAME,
7457                 .doit = nl80211_tx_mgmt,
7458                 .policy = nl80211_policy,
7459                 .flags = GENL_ADMIN_PERM,
7460                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7461                                   NL80211_FLAG_NEED_RTNL,
7462         },
7463         {
7464                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
7465                 .doit = nl80211_tx_mgmt_cancel_wait,
7466                 .policy = nl80211_policy,
7467                 .flags = GENL_ADMIN_PERM,
7468                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7469                                   NL80211_FLAG_NEED_RTNL,
7470         },
7471         {
7472                 .cmd = NL80211_CMD_SET_POWER_SAVE,
7473                 .doit = nl80211_set_power_save,
7474                 .policy = nl80211_policy,
7475                 .flags = GENL_ADMIN_PERM,
7476                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7477                                   NL80211_FLAG_NEED_RTNL,
7478         },
7479         {
7480                 .cmd = NL80211_CMD_GET_POWER_SAVE,
7481                 .doit = nl80211_get_power_save,
7482                 .policy = nl80211_policy,
7483                 /* can be retrieved by unprivileged users */
7484                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7485                                   NL80211_FLAG_NEED_RTNL,
7486         },
7487         {
7488                 .cmd = NL80211_CMD_SET_CQM,
7489                 .doit = nl80211_set_cqm,
7490                 .policy = nl80211_policy,
7491                 .flags = GENL_ADMIN_PERM,
7492                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7493                                   NL80211_FLAG_NEED_RTNL,
7494         },
7495         {
7496                 .cmd = NL80211_CMD_SET_CHANNEL,
7497                 .doit = nl80211_set_channel,
7498                 .policy = nl80211_policy,
7499                 .flags = GENL_ADMIN_PERM,
7500                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7501                                   NL80211_FLAG_NEED_RTNL,
7502         },
7503         {
7504                 .cmd = NL80211_CMD_SET_WDS_PEER,
7505                 .doit = nl80211_set_wds_peer,
7506                 .policy = nl80211_policy,
7507                 .flags = GENL_ADMIN_PERM,
7508                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7509                                   NL80211_FLAG_NEED_RTNL,
7510         },
7511         {
7512                 .cmd = NL80211_CMD_JOIN_MESH,
7513                 .doit = nl80211_join_mesh,
7514                 .policy = nl80211_policy,
7515                 .flags = GENL_ADMIN_PERM,
7516                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7517                                   NL80211_FLAG_NEED_RTNL,
7518         },
7519         {
7520                 .cmd = NL80211_CMD_LEAVE_MESH,
7521                 .doit = nl80211_leave_mesh,
7522                 .policy = nl80211_policy,
7523                 .flags = GENL_ADMIN_PERM,
7524                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7525                                   NL80211_FLAG_NEED_RTNL,
7526         },
7527 #ifdef CONFIG_PM
7528         {
7529                 .cmd = NL80211_CMD_GET_WOWLAN,
7530                 .doit = nl80211_get_wowlan,
7531                 .policy = nl80211_policy,
7532                 /* can be retrieved by unprivileged users */
7533                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7534                                   NL80211_FLAG_NEED_RTNL,
7535         },
7536         {
7537                 .cmd = NL80211_CMD_SET_WOWLAN,
7538                 .doit = nl80211_set_wowlan,
7539                 .policy = nl80211_policy,
7540                 .flags = GENL_ADMIN_PERM,
7541                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7542                                   NL80211_FLAG_NEED_RTNL,
7543         },
7544 #endif
7545         {
7546                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
7547                 .doit = nl80211_set_rekey_data,
7548                 .policy = nl80211_policy,
7549                 .flags = GENL_ADMIN_PERM,
7550                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7551                                   NL80211_FLAG_NEED_RTNL,
7552         },
7553         {
7554                 .cmd = NL80211_CMD_TDLS_MGMT,
7555                 .doit = nl80211_tdls_mgmt,
7556                 .policy = nl80211_policy,
7557                 .flags = GENL_ADMIN_PERM,
7558                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7559                                   NL80211_FLAG_NEED_RTNL,
7560         },
7561         {
7562                 .cmd = NL80211_CMD_TDLS_OPER,
7563                 .doit = nl80211_tdls_oper,
7564                 .policy = nl80211_policy,
7565                 .flags = GENL_ADMIN_PERM,
7566                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7567                                   NL80211_FLAG_NEED_RTNL,
7568         },
7569         {
7570                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
7571                 .doit = nl80211_register_unexpected_frame,
7572                 .policy = nl80211_policy,
7573                 .flags = GENL_ADMIN_PERM,
7574                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7575                                   NL80211_FLAG_NEED_RTNL,
7576         },
7577         {
7578                 .cmd = NL80211_CMD_PROBE_CLIENT,
7579                 .doit = nl80211_probe_client,
7580                 .policy = nl80211_policy,
7581                 .flags = GENL_ADMIN_PERM,
7582                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
7583                                   NL80211_FLAG_NEED_RTNL,
7584         },
7585         {
7586                 .cmd = NL80211_CMD_REGISTER_BEACONS,
7587                 .doit = nl80211_register_beacons,
7588                 .policy = nl80211_policy,
7589                 .flags = GENL_ADMIN_PERM,
7590                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
7591                                   NL80211_FLAG_NEED_RTNL,
7592         },
7593         {
7594                 .cmd = NL80211_CMD_SET_NOACK_MAP,
7595                 .doit = nl80211_set_noack_map,
7596                 .policy = nl80211_policy,
7597                 .flags = GENL_ADMIN_PERM,
7598                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
7599                                   NL80211_FLAG_NEED_RTNL,
7600         },
7601         {
7602                 .cmd = NL80211_CMD_START_P2P_DEVICE,
7603                 .doit = nl80211_start_p2p_device,
7604                 .policy = nl80211_policy,
7605                 .flags = GENL_ADMIN_PERM,
7606                 .internal_flags = NL80211_FLAG_NEED_WDEV |
7607                                   NL80211_FLAG_NEED_RTNL,
7608         },
7609         {
7610                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
7611                 .doit = nl80211_stop_p2p_device,
7612                 .policy = nl80211_policy,
7613                 .flags = GENL_ADMIN_PERM,
7614                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
7615                                   NL80211_FLAG_NEED_RTNL,
7616         },
7617 };
7618
7619 static struct genl_multicast_group nl80211_mlme_mcgrp = {
7620         .name = "mlme",
7621 };
7622
7623 /* multicast groups */
7624 static struct genl_multicast_group nl80211_config_mcgrp = {
7625         .name = "config",
7626 };
7627 static struct genl_multicast_group nl80211_scan_mcgrp = {
7628         .name = "scan",
7629 };
7630 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
7631         .name = "regulatory",
7632 };
7633
7634 /* notification functions */
7635
7636 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
7637 {
7638         struct sk_buff *msg;
7639
7640         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7641         if (!msg)
7642                 return;
7643
7644         if (nl80211_send_wiphy(msg, 0, 0, 0, rdev) < 0) {
7645                 nlmsg_free(msg);
7646                 return;
7647         }
7648
7649         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7650                                 nl80211_config_mcgrp.id, GFP_KERNEL);
7651 }
7652
7653 static int nl80211_add_scan_req(struct sk_buff *msg,
7654                                 struct cfg80211_registered_device *rdev)
7655 {
7656         struct cfg80211_scan_request *req = rdev->scan_req;
7657         struct nlattr *nest;
7658         int i;
7659
7660         ASSERT_RDEV_LOCK(rdev);
7661
7662         if (WARN_ON(!req))
7663                 return 0;
7664
7665         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
7666         if (!nest)
7667                 goto nla_put_failure;
7668         for (i = 0; i < req->n_ssids; i++) {
7669                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
7670                         goto nla_put_failure;
7671         }
7672         nla_nest_end(msg, nest);
7673
7674         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
7675         if (!nest)
7676                 goto nla_put_failure;
7677         for (i = 0; i < req->n_channels; i++) {
7678                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
7679                         goto nla_put_failure;
7680         }
7681         nla_nest_end(msg, nest);
7682
7683         if (req->ie &&
7684             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
7685                 goto nla_put_failure;
7686
7687         if (req->flags)
7688                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
7689
7690         return 0;
7691  nla_put_failure:
7692         return -ENOBUFS;
7693 }
7694
7695 static int nl80211_send_scan_msg(struct sk_buff *msg,
7696                                  struct cfg80211_registered_device *rdev,
7697                                  struct wireless_dev *wdev,
7698                                  u32 portid, u32 seq, int flags,
7699                                  u32 cmd)
7700 {
7701         void *hdr;
7702
7703         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7704         if (!hdr)
7705                 return -1;
7706
7707         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7708             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
7709                                          wdev->netdev->ifindex)) ||
7710             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
7711                 goto nla_put_failure;
7712
7713         /* ignore errors and send incomplete event anyway */
7714         nl80211_add_scan_req(msg, rdev);
7715
7716         return genlmsg_end(msg, hdr);
7717
7718  nla_put_failure:
7719         genlmsg_cancel(msg, hdr);
7720         return -EMSGSIZE;
7721 }
7722
7723 static int
7724 nl80211_send_sched_scan_msg(struct sk_buff *msg,
7725                             struct cfg80211_registered_device *rdev,
7726                             struct net_device *netdev,
7727                             u32 portid, u32 seq, int flags, u32 cmd)
7728 {
7729         void *hdr;
7730
7731         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
7732         if (!hdr)
7733                 return -1;
7734
7735         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7736             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
7737                 goto nla_put_failure;
7738
7739         return genlmsg_end(msg, hdr);
7740
7741  nla_put_failure:
7742         genlmsg_cancel(msg, hdr);
7743         return -EMSGSIZE;
7744 }
7745
7746 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
7747                              struct wireless_dev *wdev)
7748 {
7749         struct sk_buff *msg;
7750
7751         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7752         if (!msg)
7753                 return;
7754
7755         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7756                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
7757                 nlmsg_free(msg);
7758                 return;
7759         }
7760
7761         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7762                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7763 }
7764
7765 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
7766                             struct wireless_dev *wdev)
7767 {
7768         struct sk_buff *msg;
7769
7770         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7771         if (!msg)
7772                 return;
7773
7774         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7775                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
7776                 nlmsg_free(msg);
7777                 return;
7778         }
7779
7780         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7781                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7782 }
7783
7784 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
7785                                struct wireless_dev *wdev)
7786 {
7787         struct sk_buff *msg;
7788
7789         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7790         if (!msg)
7791                 return;
7792
7793         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
7794                                   NL80211_CMD_SCAN_ABORTED) < 0) {
7795                 nlmsg_free(msg);
7796                 return;
7797         }
7798
7799         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7800                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7801 }
7802
7803 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
7804                                      struct net_device *netdev)
7805 {
7806         struct sk_buff *msg;
7807
7808         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7809         if (!msg)
7810                 return;
7811
7812         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
7813                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
7814                 nlmsg_free(msg);
7815                 return;
7816         }
7817
7818         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7819                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7820 }
7821
7822 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
7823                              struct net_device *netdev, u32 cmd)
7824 {
7825         struct sk_buff *msg;
7826
7827         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7828         if (!msg)
7829                 return;
7830
7831         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
7832                 nlmsg_free(msg);
7833                 return;
7834         }
7835
7836         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7837                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
7838 }
7839
7840 /*
7841  * This can happen on global regulatory changes or device specific settings
7842  * based on custom world regulatory domains.
7843  */
7844 void nl80211_send_reg_change_event(struct regulatory_request *request)
7845 {
7846         struct sk_buff *msg;
7847         void *hdr;
7848
7849         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7850         if (!msg)
7851                 return;
7852
7853         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
7854         if (!hdr) {
7855                 nlmsg_free(msg);
7856                 return;
7857         }
7858
7859         /* Userspace can always count this one always being set */
7860         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
7861                 goto nla_put_failure;
7862
7863         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
7864                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7865                                NL80211_REGDOM_TYPE_WORLD))
7866                         goto nla_put_failure;
7867         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
7868                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7869                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
7870                         goto nla_put_failure;
7871         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
7872                    request->intersect) {
7873                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7874                                NL80211_REGDOM_TYPE_INTERSECTION))
7875                         goto nla_put_failure;
7876         } else {
7877                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
7878                                NL80211_REGDOM_TYPE_COUNTRY) ||
7879                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
7880                                    request->alpha2))
7881                         goto nla_put_failure;
7882         }
7883
7884         if (wiphy_idx_valid(request->wiphy_idx) &&
7885             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
7886                 goto nla_put_failure;
7887
7888         genlmsg_end(msg, hdr);
7889
7890         rcu_read_lock();
7891         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
7892                                 GFP_ATOMIC);
7893         rcu_read_unlock();
7894
7895         return;
7896
7897 nla_put_failure:
7898         genlmsg_cancel(msg, hdr);
7899         nlmsg_free(msg);
7900 }
7901
7902 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
7903                                     struct net_device *netdev,
7904                                     const u8 *buf, size_t len,
7905                                     enum nl80211_commands cmd, gfp_t gfp)
7906 {
7907         struct sk_buff *msg;
7908         void *hdr;
7909
7910         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7911         if (!msg)
7912                 return;
7913
7914         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7915         if (!hdr) {
7916                 nlmsg_free(msg);
7917                 return;
7918         }
7919
7920         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
7921             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
7922             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
7923                 goto nla_put_failure;
7924
7925         genlmsg_end(msg, hdr);
7926
7927         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
7928                                 nl80211_mlme_mcgrp.id, gfp);
7929         return;
7930
7931  nla_put_failure:
7932         genlmsg_cancel(msg, hdr);
7933         nlmsg_free(msg);
7934 }
7935
7936 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
7937                           struct net_device *netdev, const u8 *buf,
7938                           size_t len, gfp_t gfp)
7939 {
7940         nl80211_send_mlme_event(rdev, netdev, buf, len,
7941                                 NL80211_CMD_AUTHENTICATE, gfp);
7942 }
7943
7944 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
7945                            struct net_device *netdev, const u8 *buf,
7946                            size_t len, gfp_t gfp)
7947 {
7948         nl80211_send_mlme_event(rdev, netdev, buf, len,
7949                                 NL80211_CMD_ASSOCIATE, gfp);
7950 }
7951
7952 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
7953                          struct net_device *netdev, const u8 *buf,
7954                          size_t len, gfp_t gfp)
7955 {
7956         nl80211_send_mlme_event(rdev, netdev, buf, len,
7957                                 NL80211_CMD_DEAUTHENTICATE, gfp);
7958 }
7959
7960 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
7961                            struct net_device *netdev, const u8 *buf,
7962                            size_t len, gfp_t gfp)
7963 {
7964         nl80211_send_mlme_event(rdev, netdev, buf, len,
7965                                 NL80211_CMD_DISASSOCIATE, gfp);
7966 }
7967
7968 void nl80211_send_unprot_deauth(struct cfg80211_registered_device *rdev,
7969                                 struct net_device *netdev, const u8 *buf,
7970                                 size_t len, gfp_t gfp)
7971 {
7972         nl80211_send_mlme_event(rdev, netdev, buf, len,
7973                                 NL80211_CMD_UNPROT_DEAUTHENTICATE, gfp);
7974 }
7975
7976 void nl80211_send_unprot_disassoc(struct cfg80211_registered_device *rdev,
7977                                   struct net_device *netdev, const u8 *buf,
7978                                   size_t len, gfp_t gfp)
7979 {
7980         nl80211_send_mlme_event(rdev, netdev, buf, len,
7981                                 NL80211_CMD_UNPROT_DISASSOCIATE, gfp);
7982 }
7983
7984 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
7985                                       struct net_device *netdev, int cmd,
7986                                       const u8 *addr, gfp_t gfp)
7987 {
7988         struct sk_buff *msg;
7989         void *hdr;
7990
7991         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
7992         if (!msg)
7993                 return;
7994
7995         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
7996         if (!hdr) {
7997                 nlmsg_free(msg);
7998                 return;
7999         }
8000
8001         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8002             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8003             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
8004             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8005                 goto nla_put_failure;
8006
8007         genlmsg_end(msg, hdr);
8008
8009         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8010                                 nl80211_mlme_mcgrp.id, gfp);
8011         return;
8012
8013  nla_put_failure:
8014         genlmsg_cancel(msg, hdr);
8015         nlmsg_free(msg);
8016 }
8017
8018 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
8019                                struct net_device *netdev, const u8 *addr,
8020                                gfp_t gfp)
8021 {
8022         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
8023                                   addr, gfp);
8024 }
8025
8026 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
8027                                 struct net_device *netdev, const u8 *addr,
8028                                 gfp_t gfp)
8029 {
8030         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
8031                                   addr, gfp);
8032 }
8033
8034 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
8035                                  struct net_device *netdev, const u8 *bssid,
8036                                  const u8 *req_ie, size_t req_ie_len,
8037                                  const u8 *resp_ie, size_t resp_ie_len,
8038                                  u16 status, gfp_t gfp)
8039 {
8040         struct sk_buff *msg;
8041         void *hdr;
8042
8043         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8044         if (!msg)
8045                 return;
8046
8047         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
8048         if (!hdr) {
8049                 nlmsg_free(msg);
8050                 return;
8051         }
8052
8053         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8054             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8055             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
8056             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
8057             (req_ie &&
8058              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8059             (resp_ie &&
8060              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8061                 goto nla_put_failure;
8062
8063         genlmsg_end(msg, hdr);
8064
8065         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8066                                 nl80211_mlme_mcgrp.id, gfp);
8067         return;
8068
8069  nla_put_failure:
8070         genlmsg_cancel(msg, hdr);
8071         nlmsg_free(msg);
8072
8073 }
8074
8075 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
8076                          struct net_device *netdev, const u8 *bssid,
8077                          const u8 *req_ie, size_t req_ie_len,
8078                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
8079 {
8080         struct sk_buff *msg;
8081         void *hdr;
8082
8083         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8084         if (!msg)
8085                 return;
8086
8087         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
8088         if (!hdr) {
8089                 nlmsg_free(msg);
8090                 return;
8091         }
8092
8093         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8094             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8095             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
8096             (req_ie &&
8097              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
8098             (resp_ie &&
8099              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
8100                 goto nla_put_failure;
8101
8102         genlmsg_end(msg, hdr);
8103
8104         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8105                                 nl80211_mlme_mcgrp.id, gfp);
8106         return;
8107
8108  nla_put_failure:
8109         genlmsg_cancel(msg, hdr);
8110         nlmsg_free(msg);
8111
8112 }
8113
8114 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
8115                                struct net_device *netdev, u16 reason,
8116                                const u8 *ie, size_t ie_len, bool from_ap)
8117 {
8118         struct sk_buff *msg;
8119         void *hdr;
8120
8121         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8122         if (!msg)
8123                 return;
8124
8125         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
8126         if (!hdr) {
8127                 nlmsg_free(msg);
8128                 return;
8129         }
8130
8131         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8132             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8133             (from_ap && reason &&
8134              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
8135             (from_ap &&
8136              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
8137             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
8138                 goto nla_put_failure;
8139
8140         genlmsg_end(msg, hdr);
8141
8142         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8143                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
8144         return;
8145
8146  nla_put_failure:
8147         genlmsg_cancel(msg, hdr);
8148         nlmsg_free(msg);
8149
8150 }
8151
8152 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
8153                              struct net_device *netdev, const u8 *bssid,
8154                              gfp_t gfp)
8155 {
8156         struct sk_buff *msg;
8157         void *hdr;
8158
8159         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8160         if (!msg)
8161                 return;
8162
8163         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
8164         if (!hdr) {
8165                 nlmsg_free(msg);
8166                 return;
8167         }
8168
8169         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8170             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8171             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8172                 goto nla_put_failure;
8173
8174         genlmsg_end(msg, hdr);
8175
8176         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8177                                 nl80211_mlme_mcgrp.id, gfp);
8178         return;
8179
8180  nla_put_failure:
8181         genlmsg_cancel(msg, hdr);
8182         nlmsg_free(msg);
8183 }
8184
8185 void nl80211_send_new_peer_candidate(struct cfg80211_registered_device *rdev,
8186                 struct net_device *netdev,
8187                 const u8 *macaddr, const u8* ie, u8 ie_len,
8188                 gfp_t gfp)
8189 {
8190         struct sk_buff *msg;
8191         void *hdr;
8192
8193         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8194         if (!msg)
8195                 return;
8196
8197         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
8198         if (!hdr) {
8199                 nlmsg_free(msg);
8200                 return;
8201         }
8202
8203         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8204             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8205             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, macaddr) ||
8206             (ie_len && ie &&
8207              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
8208                 goto nla_put_failure;
8209
8210         genlmsg_end(msg, hdr);
8211
8212         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8213                                 nl80211_mlme_mcgrp.id, gfp);
8214         return;
8215
8216  nla_put_failure:
8217         genlmsg_cancel(msg, hdr);
8218         nlmsg_free(msg);
8219 }
8220
8221 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
8222                                  struct net_device *netdev, const u8 *addr,
8223                                  enum nl80211_key_type key_type, int key_id,
8224                                  const u8 *tsc, gfp_t gfp)
8225 {
8226         struct sk_buff *msg;
8227         void *hdr;
8228
8229         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8230         if (!msg)
8231                 return;
8232
8233         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
8234         if (!hdr) {
8235                 nlmsg_free(msg);
8236                 return;
8237         }
8238
8239         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8240             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8241             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
8242             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
8243             (key_id != -1 &&
8244              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
8245             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
8246                 goto nla_put_failure;
8247
8248         genlmsg_end(msg, hdr);
8249
8250         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8251                                 nl80211_mlme_mcgrp.id, gfp);
8252         return;
8253
8254  nla_put_failure:
8255         genlmsg_cancel(msg, hdr);
8256         nlmsg_free(msg);
8257 }
8258
8259 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
8260                                     struct ieee80211_channel *channel_before,
8261                                     struct ieee80211_channel *channel_after)
8262 {
8263         struct sk_buff *msg;
8264         void *hdr;
8265         struct nlattr *nl_freq;
8266
8267         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
8268         if (!msg)
8269                 return;
8270
8271         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
8272         if (!hdr) {
8273                 nlmsg_free(msg);
8274                 return;
8275         }
8276
8277         /*
8278          * Since we are applying the beacon hint to a wiphy we know its
8279          * wiphy_idx is valid
8280          */
8281         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
8282                 goto nla_put_failure;
8283
8284         /* Before */
8285         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
8286         if (!nl_freq)
8287                 goto nla_put_failure;
8288         if (nl80211_msg_put_channel(msg, channel_before))
8289                 goto nla_put_failure;
8290         nla_nest_end(msg, nl_freq);
8291
8292         /* After */
8293         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
8294         if (!nl_freq)
8295                 goto nla_put_failure;
8296         if (nl80211_msg_put_channel(msg, channel_after))
8297                 goto nla_put_failure;
8298         nla_nest_end(msg, nl_freq);
8299
8300         genlmsg_end(msg, hdr);
8301
8302         rcu_read_lock();
8303         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
8304                                 GFP_ATOMIC);
8305         rcu_read_unlock();
8306
8307         return;
8308
8309 nla_put_failure:
8310         genlmsg_cancel(msg, hdr);
8311         nlmsg_free(msg);
8312 }
8313
8314 static void nl80211_send_remain_on_chan_event(
8315         int cmd, struct cfg80211_registered_device *rdev,
8316         struct wireless_dev *wdev, u64 cookie,
8317         struct ieee80211_channel *chan,
8318         enum nl80211_channel_type channel_type,
8319         unsigned int duration, gfp_t gfp)
8320 {
8321         struct sk_buff *msg;
8322         void *hdr;
8323
8324         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8325         if (!msg)
8326                 return;
8327
8328         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8329         if (!hdr) {
8330                 nlmsg_free(msg);
8331                 return;
8332         }
8333
8334         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8335             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8336                                          wdev->netdev->ifindex)) ||
8337             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
8338             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
8339             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type) ||
8340             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8341                 goto nla_put_failure;
8342
8343         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
8344             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
8345                 goto nla_put_failure;
8346
8347         genlmsg_end(msg, hdr);
8348
8349         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8350                                 nl80211_mlme_mcgrp.id, gfp);
8351         return;
8352
8353  nla_put_failure:
8354         genlmsg_cancel(msg, hdr);
8355         nlmsg_free(msg);
8356 }
8357
8358 void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
8359                                     struct wireless_dev *wdev, u64 cookie,
8360                                     struct ieee80211_channel *chan,
8361                                     enum nl80211_channel_type channel_type,
8362                                     unsigned int duration, gfp_t gfp)
8363 {
8364         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
8365                                           rdev, wdev, cookie, chan,
8366                                           channel_type, duration, gfp);
8367 }
8368
8369 void nl80211_send_remain_on_channel_cancel(
8370         struct cfg80211_registered_device *rdev,
8371         struct wireless_dev *wdev,
8372         u64 cookie, struct ieee80211_channel *chan,
8373         enum nl80211_channel_type channel_type, gfp_t gfp)
8374 {
8375         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
8376                                           rdev, wdev, cookie, chan,
8377                                           channel_type, 0, gfp);
8378 }
8379
8380 void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
8381                             struct net_device *dev, const u8 *mac_addr,
8382                             struct station_info *sinfo, gfp_t gfp)
8383 {
8384         struct sk_buff *msg;
8385
8386         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8387         if (!msg)
8388                 return;
8389
8390         if (nl80211_send_station(msg, 0, 0, 0,
8391                                  rdev, dev, mac_addr, sinfo) < 0) {
8392                 nlmsg_free(msg);
8393                 return;
8394         }
8395
8396         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8397                                 nl80211_mlme_mcgrp.id, gfp);
8398 }
8399
8400 void nl80211_send_sta_del_event(struct cfg80211_registered_device *rdev,
8401                                 struct net_device *dev, const u8 *mac_addr,
8402                                 gfp_t gfp)
8403 {
8404         struct sk_buff *msg;
8405         void *hdr;
8406
8407         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8408         if (!msg)
8409                 return;
8410
8411         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
8412         if (!hdr) {
8413                 nlmsg_free(msg);
8414                 return;
8415         }
8416
8417         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8418             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
8419                 goto nla_put_failure;
8420
8421         genlmsg_end(msg, hdr);
8422
8423         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8424                                 nl80211_mlme_mcgrp.id, gfp);
8425         return;
8426
8427  nla_put_failure:
8428         genlmsg_cancel(msg, hdr);
8429         nlmsg_free(msg);
8430 }
8431
8432 void nl80211_send_conn_failed_event(struct cfg80211_registered_device *rdev,
8433                                     struct net_device *dev, const u8 *mac_addr,
8434                                     enum nl80211_connect_failed_reason reason,
8435                                     gfp_t gfp)
8436 {
8437         struct sk_buff *msg;
8438         void *hdr;
8439
8440         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8441         if (!msg)
8442                 return;
8443
8444         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
8445         if (!hdr) {
8446                 nlmsg_free(msg);
8447                 return;
8448         }
8449
8450         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8451             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
8452             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
8453                 goto nla_put_failure;
8454
8455         genlmsg_end(msg, hdr);
8456
8457         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8458                                 nl80211_mlme_mcgrp.id, gfp);
8459         return;
8460
8461  nla_put_failure:
8462         genlmsg_cancel(msg, hdr);
8463         nlmsg_free(msg);
8464 }
8465
8466 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
8467                                        const u8 *addr, gfp_t gfp)
8468 {
8469         struct wireless_dev *wdev = dev->ieee80211_ptr;
8470         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8471         struct sk_buff *msg;
8472         void *hdr;
8473         int err;
8474         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
8475
8476         if (!nlportid)
8477                 return false;
8478
8479         msg = nlmsg_new(100, gfp);
8480         if (!msg)
8481                 return true;
8482
8483         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
8484         if (!hdr) {
8485                 nlmsg_free(msg);
8486                 return true;
8487         }
8488
8489         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8490             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8491             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
8492                 goto nla_put_failure;
8493
8494         err = genlmsg_end(msg, hdr);
8495         if (err < 0) {
8496                 nlmsg_free(msg);
8497                 return true;
8498         }
8499
8500         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8501         return true;
8502
8503  nla_put_failure:
8504         genlmsg_cancel(msg, hdr);
8505         nlmsg_free(msg);
8506         return true;
8507 }
8508
8509 bool nl80211_unexpected_frame(struct net_device *dev, const u8 *addr, gfp_t gfp)
8510 {
8511         return __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
8512                                           addr, gfp);
8513 }
8514
8515 bool nl80211_unexpected_4addr_frame(struct net_device *dev,
8516                                     const u8 *addr, gfp_t gfp)
8517 {
8518         return __nl80211_unexpected_frame(dev,
8519                                           NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
8520                                           addr, gfp);
8521 }
8522
8523 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
8524                       struct wireless_dev *wdev, u32 nlportid,
8525                       int freq, int sig_dbm,
8526                       const u8 *buf, size_t len, gfp_t gfp)
8527 {
8528         struct net_device *netdev = wdev->netdev;
8529         struct sk_buff *msg;
8530         void *hdr;
8531
8532         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8533         if (!msg)
8534                 return -ENOMEM;
8535
8536         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8537         if (!hdr) {
8538                 nlmsg_free(msg);
8539                 return -ENOMEM;
8540         }
8541
8542         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8543             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8544                                         netdev->ifindex)) ||
8545             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8546             (sig_dbm &&
8547              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8548             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
8549                 goto nla_put_failure;
8550
8551         genlmsg_end(msg, hdr);
8552
8553         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8554
8555  nla_put_failure:
8556         genlmsg_cancel(msg, hdr);
8557         nlmsg_free(msg);
8558         return -ENOBUFS;
8559 }
8560
8561 void nl80211_send_mgmt_tx_status(struct cfg80211_registered_device *rdev,
8562                                  struct wireless_dev *wdev, u64 cookie,
8563                                  const u8 *buf, size_t len, bool ack,
8564                                  gfp_t gfp)
8565 {
8566         struct net_device *netdev = wdev->netdev;
8567         struct sk_buff *msg;
8568         void *hdr;
8569
8570         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8571         if (!msg)
8572                 return;
8573
8574         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
8575         if (!hdr) {
8576                 nlmsg_free(msg);
8577                 return;
8578         }
8579
8580         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8581             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
8582                                    netdev->ifindex)) ||
8583             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
8584             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8585             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
8586                 goto nla_put_failure;
8587
8588         genlmsg_end(msg, hdr);
8589
8590         genlmsg_multicast(msg, 0, nl80211_mlme_mcgrp.id, gfp);
8591         return;
8592
8593  nla_put_failure:
8594         genlmsg_cancel(msg, hdr);
8595         nlmsg_free(msg);
8596 }
8597
8598 void
8599 nl80211_send_cqm_rssi_notify(struct cfg80211_registered_device *rdev,
8600                              struct net_device *netdev,
8601                              enum nl80211_cqm_rssi_threshold_event rssi_event,
8602                              gfp_t gfp)
8603 {
8604         struct sk_buff *msg;
8605         struct nlattr *pinfoattr;
8606         void *hdr;
8607
8608         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8609         if (!msg)
8610                 return;
8611
8612         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8613         if (!hdr) {
8614                 nlmsg_free(msg);
8615                 return;
8616         }
8617
8618         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8619             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8620                 goto nla_put_failure;
8621
8622         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8623         if (!pinfoattr)
8624                 goto nla_put_failure;
8625
8626         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
8627                         rssi_event))
8628                 goto nla_put_failure;
8629
8630         nla_nest_end(msg, pinfoattr);
8631
8632         genlmsg_end(msg, hdr);
8633
8634         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8635                                 nl80211_mlme_mcgrp.id, gfp);
8636         return;
8637
8638  nla_put_failure:
8639         genlmsg_cancel(msg, hdr);
8640         nlmsg_free(msg);
8641 }
8642
8643 void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
8644                               struct net_device *netdev, const u8 *bssid,
8645                               const u8 *replay_ctr, gfp_t gfp)
8646 {
8647         struct sk_buff *msg;
8648         struct nlattr *rekey_attr;
8649         void *hdr;
8650
8651         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8652         if (!msg)
8653                 return;
8654
8655         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
8656         if (!hdr) {
8657                 nlmsg_free(msg);
8658                 return;
8659         }
8660
8661         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8662             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8663             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
8664                 goto nla_put_failure;
8665
8666         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
8667         if (!rekey_attr)
8668                 goto nla_put_failure;
8669
8670         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
8671                     NL80211_REPLAY_CTR_LEN, replay_ctr))
8672                 goto nla_put_failure;
8673
8674         nla_nest_end(msg, rekey_attr);
8675
8676         genlmsg_end(msg, hdr);
8677
8678         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8679                                 nl80211_mlme_mcgrp.id, gfp);
8680         return;
8681
8682  nla_put_failure:
8683         genlmsg_cancel(msg, hdr);
8684         nlmsg_free(msg);
8685 }
8686
8687 void nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
8688                                     struct net_device *netdev, int index,
8689                                     const u8 *bssid, bool preauth, gfp_t gfp)
8690 {
8691         struct sk_buff *msg;
8692         struct nlattr *attr;
8693         void *hdr;
8694
8695         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8696         if (!msg)
8697                 return;
8698
8699         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
8700         if (!hdr) {
8701                 nlmsg_free(msg);
8702                 return;
8703         }
8704
8705         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8706             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
8707                 goto nla_put_failure;
8708
8709         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
8710         if (!attr)
8711                 goto nla_put_failure;
8712
8713         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
8714             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
8715             (preauth &&
8716              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
8717                 goto nla_put_failure;
8718
8719         nla_nest_end(msg, attr);
8720
8721         genlmsg_end(msg, hdr);
8722
8723         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8724                                 nl80211_mlme_mcgrp.id, gfp);
8725         return;
8726
8727  nla_put_failure:
8728         genlmsg_cancel(msg, hdr);
8729         nlmsg_free(msg);
8730 }
8731
8732 void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
8733                               struct net_device *netdev, int freq,
8734                               enum nl80211_channel_type type, gfp_t gfp)
8735 {
8736         struct sk_buff *msg;
8737         void *hdr;
8738
8739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8740         if (!msg)
8741                 return;
8742
8743         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
8744         if (!hdr) {
8745                 nlmsg_free(msg);
8746                 return;
8747         }
8748
8749         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8750             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
8751             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, type))
8752                 goto nla_put_failure;
8753
8754         genlmsg_end(msg, hdr);
8755
8756         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8757                                 nl80211_mlme_mcgrp.id, gfp);
8758         return;
8759
8760  nla_put_failure:
8761         genlmsg_cancel(msg, hdr);
8762         nlmsg_free(msg);
8763 }
8764
8765 void
8766 nl80211_send_cqm_txe_notify(struct cfg80211_registered_device *rdev,
8767                             struct net_device *netdev, const u8 *peer,
8768                             u32 num_packets, u32 rate, u32 intvl, gfp_t gfp)
8769 {
8770         struct sk_buff *msg;
8771         struct nlattr *pinfoattr;
8772         void *hdr;
8773
8774         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
8775         if (!msg)
8776                 return;
8777
8778         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8779         if (!hdr) {
8780                 nlmsg_free(msg);
8781                 return;
8782         }
8783
8784         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8785             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8786             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8787                 goto nla_put_failure;
8788
8789         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8790         if (!pinfoattr)
8791                 goto nla_put_failure;
8792
8793         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
8794                 goto nla_put_failure;
8795
8796         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
8797                 goto nla_put_failure;
8798
8799         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
8800                 goto nla_put_failure;
8801
8802         nla_nest_end(msg, pinfoattr);
8803
8804         genlmsg_end(msg, hdr);
8805
8806         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8807                                 nl80211_mlme_mcgrp.id, gfp);
8808         return;
8809
8810  nla_put_failure:
8811         genlmsg_cancel(msg, hdr);
8812         nlmsg_free(msg);
8813 }
8814
8815 void
8816 nl80211_send_cqm_pktloss_notify(struct cfg80211_registered_device *rdev,
8817                                 struct net_device *netdev, const u8 *peer,
8818                                 u32 num_packets, gfp_t gfp)
8819 {
8820         struct sk_buff *msg;
8821         struct nlattr *pinfoattr;
8822         void *hdr;
8823
8824         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8825         if (!msg)
8826                 return;
8827
8828         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
8829         if (!hdr) {
8830                 nlmsg_free(msg);
8831                 return;
8832         }
8833
8834         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8835             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
8836             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
8837                 goto nla_put_failure;
8838
8839         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
8840         if (!pinfoattr)
8841                 goto nla_put_failure;
8842
8843         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
8844                 goto nla_put_failure;
8845
8846         nla_nest_end(msg, pinfoattr);
8847
8848         genlmsg_end(msg, hdr);
8849
8850         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8851                                 nl80211_mlme_mcgrp.id, gfp);
8852         return;
8853
8854  nla_put_failure:
8855         genlmsg_cancel(msg, hdr);
8856         nlmsg_free(msg);
8857 }
8858
8859 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
8860                            u64 cookie, bool acked, gfp_t gfp)
8861 {
8862         struct wireless_dev *wdev = dev->ieee80211_ptr;
8863         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
8864         struct sk_buff *msg;
8865         void *hdr;
8866         int err;
8867
8868         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
8869         if (!msg)
8870                 return;
8871
8872         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
8873         if (!hdr) {
8874                 nlmsg_free(msg);
8875                 return;
8876         }
8877
8878         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8879             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
8880             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
8881             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
8882             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
8883                 goto nla_put_failure;
8884
8885         err = genlmsg_end(msg, hdr);
8886         if (err < 0) {
8887                 nlmsg_free(msg);
8888                 return;
8889         }
8890
8891         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
8892                                 nl80211_mlme_mcgrp.id, gfp);
8893         return;
8894
8895  nla_put_failure:
8896         genlmsg_cancel(msg, hdr);
8897         nlmsg_free(msg);
8898 }
8899 EXPORT_SYMBOL(cfg80211_probe_status);
8900
8901 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
8902                                  const u8 *frame, size_t len,
8903                                  int freq, int sig_dbm, gfp_t gfp)
8904 {
8905         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
8906         struct sk_buff *msg;
8907         void *hdr;
8908         u32 nlportid = ACCESS_ONCE(rdev->ap_beacons_nlportid);
8909
8910         if (!nlportid)
8911                 return;
8912
8913         msg = nlmsg_new(len + 100, gfp);
8914         if (!msg)
8915                 return;
8916
8917         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
8918         if (!hdr) {
8919                 nlmsg_free(msg);
8920                 return;
8921         }
8922
8923         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
8924             (freq &&
8925              nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
8926             (sig_dbm &&
8927              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
8928             nla_put(msg, NL80211_ATTR_FRAME, len, frame))
8929                 goto nla_put_failure;
8930
8931         genlmsg_end(msg, hdr);
8932
8933         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
8934         return;
8935
8936  nla_put_failure:
8937         genlmsg_cancel(msg, hdr);
8938         nlmsg_free(msg);
8939 }
8940 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
8941
8942 static int nl80211_netlink_notify(struct notifier_block * nb,
8943                                   unsigned long state,
8944                                   void *_notify)
8945 {
8946         struct netlink_notify *notify = _notify;
8947         struct cfg80211_registered_device *rdev;
8948         struct wireless_dev *wdev;
8949
8950         if (state != NETLINK_URELEASE)
8951                 return NOTIFY_DONE;
8952
8953         rcu_read_lock();
8954
8955         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
8956                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
8957                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
8958                 if (rdev->ap_beacons_nlportid == notify->portid)
8959                         rdev->ap_beacons_nlportid = 0;
8960         }
8961
8962         rcu_read_unlock();
8963
8964         return NOTIFY_DONE;
8965 }
8966
8967 static struct notifier_block nl80211_netlink_notifier = {
8968         .notifier_call = nl80211_netlink_notify,
8969 };
8970
8971 /* initialisation/exit functions */
8972
8973 int nl80211_init(void)
8974 {
8975         int err;
8976
8977         err = genl_register_family_with_ops(&nl80211_fam,
8978                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
8979         if (err)
8980                 return err;
8981
8982         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
8983         if (err)
8984                 goto err_out;
8985
8986         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
8987         if (err)
8988                 goto err_out;
8989
8990         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
8991         if (err)
8992                 goto err_out;
8993
8994         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
8995         if (err)
8996                 goto err_out;
8997
8998 #ifdef CONFIG_NL80211_TESTMODE
8999         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
9000         if (err)
9001                 goto err_out;
9002 #endif
9003
9004         err = netlink_register_notifier(&nl80211_netlink_notifier);
9005         if (err)
9006                 goto err_out;
9007
9008         return 0;
9009  err_out:
9010         genl_unregister_family(&nl80211_fam);
9011         return err;
9012 }
9013
9014 void nl80211_exit(void)
9015 {
9016         netlink_unregister_notifier(&nl80211_netlink_notifier);
9017         genl_unregister_family(&nl80211_fam);
9018 }