net/wireless/nl80211.c

   1 /*
   2  * This is the new netlink-based wireless configuration interface.
   3  *
   4  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   5  */
   6
   7 #include <linux/if.h>
   8 #include <linux/module.h>
   9 #include <linux/err.h>
  10 #include <linux/slab.h>
  11 #include <linux/list.h>
  12 #include <linux/if_ether.h>
  13 #include <linux/ieee80211.h>
  14 #include <linux/nl80211.h>
  15 #include <linux/rtnetlink.h>
  16 #include <linux/netlink.h>
  17 #include <linux/etherdevice.h>
  18 #include <net/net_namespace.h>
  19 #include <net/genetlink.h>
  20 #include <net/cfg80211.h>
  21 #include <net/sock.h>
  22 #include <net/inet_connection_sock.h>
  23 #include "core.h"
  24 #include "nl80211.h"
  25 #include "reg.h"
  26 #include "rdev-ops.h"
  27
  28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  29                                    struct genl_info *info,
  30                                    struct cfg80211_crypto_settings *settings,
  31                                    int cipher_limit);
  32
  33 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
  34                             struct genl_info *info);
  35 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
  36                               struct genl_info *info);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam = {
  40         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  41         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  42         .hdrsize = 0,                   /* no private header */
  43         .version = 1,                   /* no particular meaning now */
  44         .maxattr = NL80211_ATTR_MAX,
  45         .netnsok = true,
  46         .pre_doit = nl80211_pre_doit,
  47         .post_doit = nl80211_post_doit,
  48 };
  49
  50 /* returns ERR_PTR values */
  51 static struct wireless_dev *
  52 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  53 {
  54         struct cfg80211_registered_device *rdev;
  55         struct wireless_dev *result = NULL;
  56         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  57         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  58         u64 wdev_id;
  59         int wiphy_idx = -1;
  60         int ifidx = -1;
  61
  62         ASSERT_RTNL();
  63
  64         if (!have_ifidx && !have_wdev_id)
  65                 return ERR_PTR(-EINVAL);
  66
  67         if (have_ifidx)
  68                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  69         if (have_wdev_id) {
  70                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  71                 wiphy_idx = wdev_id >> 32;
  72         }
  73
  74         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  75                 struct wireless_dev *wdev;
  76
  77                 if (wiphy_net(&rdev->wiphy) != netns)
  78                         continue;
  79
  80                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  81                         continue;
  82
  83                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
  84                         if (have_ifidx && wdev->netdev &&
  85                             wdev->netdev->ifindex == ifidx) {
  86                                 result = wdev;
  87                                 break;
  88                         }
  89                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  90                                 result = wdev;
  91                                 break;
  92                         }
  93                 }
  94
  95                 if (result)
  96                         break;
  97         }
  98
  99         if (result)
 100                 return result;
 101         return ERR_PTR(-ENODEV);
 102 }
 103
 104 static struct cfg80211_registered_device *
 105 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 106 {
 107         struct cfg80211_registered_device *rdev = NULL, *tmp;
 108         struct net_device *netdev;
 109
 110         ASSERT_RTNL();
 111
 112         if (!attrs[NL80211_ATTR_WIPHY] &&
 113             !attrs[NL80211_ATTR_IFINDEX] &&
 114             !attrs[NL80211_ATTR_WDEV])
 115                 return ERR_PTR(-EINVAL);
 116
 117         if (attrs[NL80211_ATTR_WIPHY])
 118                 rdev = cfg80211_rdev_by_wiphy_idx(
 119                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 120
 121         if (attrs[NL80211_ATTR_WDEV]) {
 122                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 123                 struct wireless_dev *wdev;
 124                 bool found = false;
 125
 126                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 127                 if (tmp) {
 128                         /* make sure wdev exists */
 129                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 130                                 if (wdev->identifier != (u32)wdev_id)
 131                                         continue;
 132                                 found = true;
 133                                 break;
 134                         }
 135
 136                         if (!found)
 137                                 tmp = NULL;
 138
 139                         if (rdev && tmp != rdev)
 140                                 return ERR_PTR(-EINVAL);
 141                         rdev = tmp;
 142                 }
 143         }
 144
 145         if (attrs[NL80211_ATTR_IFINDEX]) {
 146                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 147                 netdev = dev_get_by_index(netns, ifindex);
 148                 if (netdev) {
 149                         if (netdev->ieee80211_ptr)
 150                                 tmp = wiphy_to_dev(
 151                                                 netdev->ieee80211_ptr->wiphy);
 152                         else
 153                                 tmp = NULL;
 154
 155                         dev_put(netdev);
 156
 157                         /* not wireless device -- return error */
 158                         if (!tmp)
 159                                 return ERR_PTR(-EINVAL);
 160
 161                         /* mismatch -- return error */
 162                         if (rdev && tmp != rdev)
 163                                 return ERR_PTR(-EINVAL);
 164
 165                         rdev = tmp;
 166                 }
 167         }
 168
 169         if (!rdev)
 170                 return ERR_PTR(-ENODEV);
 171
 172         if (netns != wiphy_net(&rdev->wiphy))
 173                 return ERR_PTR(-ENODEV);
 174
 175         return rdev;
 176 }
 177
 178 /*
 179  * This function returns a pointer to the driver
 180  * that the genl_info item that is passed refers to.
 181  *
 182  * The result of this can be a PTR_ERR and hence must
 183  * be checked with IS_ERR() for errors.
 184  */
 185 static struct cfg80211_registered_device *
 186 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 187 {
 188         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 189 }
 190
 191 /* policy for the attributes */
 192 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 193         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 194         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 195                                       .len = 20-1 },
 196         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 197
 198         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 199         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 200         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 201         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 202         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 203
 204         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 205         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 206         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 207         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 208         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 209
 210         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 211         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 212         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 213
 214         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 215         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 216
 217         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 218         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 219                                     .len = WLAN_MAX_KEY_LEN },
 220         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 221         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 222         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 223         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 224         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 225
 226         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 227         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 229                                        .len = IEEE80211_MAX_DATA_LEN },
 230         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 231                                        .len = IEEE80211_MAX_DATA_LEN },
 232         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 233         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 234         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 235         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 236                                                .len = NL80211_MAX_SUPP_RATES },
 237         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 238         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 239         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 240         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 241                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 242         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 243
 244         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 245         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 246
 247         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 248         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 249         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 250         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 251                                            .len = NL80211_MAX_SUPP_RATES },
 252         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 253
 254         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 256
 257         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 258
 259         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 260         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 261                               .len = IEEE80211_MAX_DATA_LEN },
 262         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 263         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 264
 265         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 266                                 .len = IEEE80211_MAX_SSID_LEN },
 267         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 268         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 269         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 270         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 271         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 272         [NL80211_ATTR_STA_FLAGS2] = {
 273                 .len = sizeof(struct nl80211_sta_flag_update),
 274         },
 275         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 276         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 277         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 278         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 279         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 280         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 281         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 282         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 283         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 284                                  .len = WLAN_PMKID_LEN },
 285         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 286         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 287         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 288         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 289                                  .len = IEEE80211_MAX_DATA_LEN },
 290         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 291         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 292         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 293         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 294         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 295         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 296         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 297         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 299         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 300         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 301         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 302         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 303         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 304         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 305         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 306         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 307         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 308         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 309         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 310                                          .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 312                                          .len = IEEE80211_MAX_DATA_LEN },
 313         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 314         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 315         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 316         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 317         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 318         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 319         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 320         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 321         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 322         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 323                                       .len = IEEE80211_MAX_DATA_LEN },
 324         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 325         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 326         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 327                 .len = NL80211_HT_CAPABILITY_LEN
 328         },
 329         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 330         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 331         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 332         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 333         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 334         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 335         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 336         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 337         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 338         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 339         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 340         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 341         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 342         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 343         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 344         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 345         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 346                 .len = NL80211_VHT_CAPABILITY_LEN,
 347         },
 348         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 349         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 350                                   .len = IEEE80211_MAX_DATA_LEN },
 351         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 352 };
 353
 354 /* policy for the key attributes */
 355 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 356         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 357         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 358         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 359         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 360         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 361         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 362         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 363         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 364 };
 365
 366 /* policy for the key default flags */
 367 static const struct nla_policy
 368 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 369         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 370         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 371 };
 372
 373 /* policy for WoWLAN attributes */
 374 static const struct nla_policy
 375 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 376         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 377         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 378         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 379         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 380         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 381         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 382         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 383         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 384         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 385 };
 386
 387 static const struct nla_policy
 388 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 389         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 390         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 391         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 392         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 393         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 394         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 395         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 396                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 397         },
 398         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 399                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 400         },
 401         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 402         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 403         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 404 };
 405
 406 /* policy for coalesce rule attributes */
 407 static const struct nla_policy
 408 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 409         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 410         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 411         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 412 };
 413
 414 /* policy for GTK rekey offload attributes */
 415 static const struct nla_policy
 416 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 417         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 418         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 419         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 420 };
 421
 422 static const struct nla_policy
 423 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 424         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 425                                                  .len = IEEE80211_MAX_SSID_LEN },
 426         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 427 };
 428
 429 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 430                                      struct netlink_callback *cb,
 431                                      struct cfg80211_registered_device **rdev,
 432                                      struct wireless_dev **wdev)
 433 {
 434         int err;
 435
 436         rtnl_lock();
 437
 438         if (!cb->args[0]) {
 439                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 440                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 441                                   nl80211_policy);
 442                 if (err)
 443                         goto out_unlock;
 444
 445                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 446                                                    nl80211_fam.attrbuf);
 447                 if (IS_ERR(*wdev)) {
 448                         err = PTR_ERR(*wdev);
 449                         goto out_unlock;
 450                 }
 451                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 452                 cb->args[0] = (*rdev)->wiphy_idx;
 453                 cb->args[1] = (*wdev)->identifier;
 454         } else {
 455                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0]);
 456                 struct wireless_dev *tmp;
 457
 458                 if (!wiphy) {
 459                         err = -ENODEV;
 460                         goto out_unlock;
 461                 }
 462                 *rdev = wiphy_to_dev(wiphy);
 463                 *wdev = NULL;
 464
 465                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 466                         if (tmp->identifier == cb->args[1]) {
 467                                 *wdev = tmp;
 468                                 break;
 469                         }
 470                 }
 471
 472                 if (!*wdev) {
 473                         err = -ENODEV;
 474                         goto out_unlock;
 475                 }
 476         }
 477
 478         return 0;
 479  out_unlock:
 480         rtnl_unlock();
 481         return err;
 482 }
 483
 484 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 485 {
 486         rtnl_unlock();
 487 }
 488
 489 /* IE validation */
 490 static bool is_valid_ie_attr(const struct nlattr *attr)
 491 {
 492         const u8 *pos;
 493         int len;
 494
 495         if (!attr)
 496                 return true;
 497
 498         pos = nla_data(attr);
 499         len = nla_len(attr);
 500
 501         while (len) {
 502                 u8 elemlen;
 503
 504                 if (len < 2)
 505                         return false;
 506                 len -= 2;
 507
 508                 elemlen = pos[1];
 509                 if (elemlen > len)
 510                         return false;
 511
 512                 len -= elemlen;
 513                 pos += 2 + elemlen;
 514         }
 515
 516         return true;
 517 }
 518
 519 /* message building helper */
 520 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 521                                    int flags, u8 cmd)
 522 {
 523         /* since there is no private header just add the generic one */
 524         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 525 }
 526
 527 static int nl80211_msg_put_channel(struct sk_buff *msg,
 528                                    struct ieee80211_channel *chan,
 529                                    bool large)
 530 {
 531         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 532                         chan->center_freq))
 533                 goto nla_put_failure;
 534
 535         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 536             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 537                 goto nla_put_failure;
 538         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 539             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 540                 goto nla_put_failure;
 541         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 542             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 543                 goto nla_put_failure;
 544         if (chan->flags & IEEE80211_CHAN_RADAR) {
 545                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 546                         goto nla_put_failure;
 547                 if (large) {
 548                         u32 time;
 549
 550                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 551
 552                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 553                                         chan->dfs_state))
 554                                 goto nla_put_failure;
 555                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 556                                         time))
 557                                 goto nla_put_failure;
 558                 }
 559         }
 560
 561         if (large) {
 562                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 563                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 564                         goto nla_put_failure;
 565                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 566                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 567                         goto nla_put_failure;
 568                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 569                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 570                         goto nla_put_failure;
 571                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 572                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 573                         goto nla_put_failure;
 574         }
 575
 576         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 577                         DBM_TO_MBM(chan->max_power)))
 578                 goto nla_put_failure;
 579
 580         return 0;
 581
 582  nla_put_failure:
 583         return -ENOBUFS;
 584 }
 585
 586 /* netlink command implementations */
 587
 588 struct key_parse {
 589         struct key_params p;
 590         int idx;
 591         int type;
 592         bool def, defmgmt;
 593         bool def_uni, def_multi;
 594 };
 595
 596 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 597 {
 598         struct nlattr *tb[NL80211_KEY_MAX + 1];
 599         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 600                                    nl80211_key_policy);
 601         if (err)
 602                 return err;
 603
 604         k->def = !!tb[NL80211_KEY_DEFAULT];
 605         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 606
 607         if (k->def) {
 608                 k->def_uni = true;
 609                 k->def_multi = true;
 610         }
 611         if (k->defmgmt)
 612                 k->def_multi = true;
 613
 614         if (tb[NL80211_KEY_IDX])
 615                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 616
 617         if (tb[NL80211_KEY_DATA]) {
 618                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 619                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 620         }
 621
 622         if (tb[NL80211_KEY_SEQ]) {
 623                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 624                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 625         }
 626
 627         if (tb[NL80211_KEY_CIPHER])
 628                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 629
 630         if (tb[NL80211_KEY_TYPE]) {
 631                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 632                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 633                         return -EINVAL;
 634         }
 635
 636         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 637                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 638                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 639                                        tb[NL80211_KEY_DEFAULT_TYPES],
 640                                        nl80211_key_default_policy);
 641                 if (err)
 642                         return err;
 643
 644                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 645                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 646         }
 647
 648         return 0;
 649 }
 650
 651 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 652 {
 653         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 654                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 655                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 656         }
 657
 658         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 659                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 660                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 661         }
 662
 663         if (info->attrs[NL80211_ATTR_KEY_IDX])
 664                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 665
 666         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 667                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 668
 669         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 670         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 671
 672         if (k->def) {
 673                 k->def_uni = true;
 674                 k->def_multi = true;
 675         }
 676         if (k->defmgmt)
 677                 k->def_multi = true;
 678
 679         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 680                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 681                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 682                         return -EINVAL;
 683         }
 684
 685         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 686                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 687                 int err = nla_parse_nested(
 688                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 689                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 690                                 nl80211_key_default_policy);
 691                 if (err)
 692                         return err;
 693
 694                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 695                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 696         }
 697
 698         return 0;
 699 }
 700
 701 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 702 {
 703         int err;
 704
 705         memset(k, 0, sizeof(*k));
 706         k->idx = -1;
 707         k->type = -1;
 708
 709         if (info->attrs[NL80211_ATTR_KEY])
 710                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 711         else
 712                 err = nl80211_parse_key_old(info, k);
 713
 714         if (err)
 715                 return err;
 716
 717         if (k->def && k->defmgmt)
 718                 return -EINVAL;
 719
 720         if (k->defmgmt) {
 721                 if (k->def_uni || !k->def_multi)
 722                         return -EINVAL;
 723         }
 724
 725         if (k->idx != -1) {
 726                 if (k->defmgmt) {
 727                         if (k->idx < 4 || k->idx > 5)
 728                                 return -EINVAL;
 729                 } else if (k->def) {
 730                         if (k->idx < 0 || k->idx > 3)
 731                                 return -EINVAL;
 732                 } else {
 733                         if (k->idx < 0 || k->idx > 5)
 734                                 return -EINVAL;
 735                 }
 736         }
 737
 738         return 0;
 739 }
 740
 741 static struct cfg80211_cached_keys *
 742 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 743                        struct nlattr *keys, bool *no_ht)
 744 {
 745         struct key_parse parse;
 746         struct nlattr *key;
 747         struct cfg80211_cached_keys *result;
 748         int rem, err, def = 0;
 749
 750         result = kzalloc(sizeof(*result), GFP_KERNEL);
 751         if (!result)
 752                 return ERR_PTR(-ENOMEM);
 753
 754         result->def = -1;
 755         result->defmgmt = -1;
 756
 757         nla_for_each_nested(key, keys, rem) {
 758                 memset(&parse, 0, sizeof(parse));
 759                 parse.idx = -1;
 760
 761                 err = nl80211_parse_key_new(key, &parse);
 762                 if (err)
 763                         goto error;
 764                 err = -EINVAL;
 765                 if (!parse.p.key)
 766                         goto error;
 767                 if (parse.idx < 0 || parse.idx > 4)
 768                         goto error;
 769                 if (parse.def) {
 770                         if (def)
 771                                 goto error;
 772                         def = 1;
 773                         result->def = parse.idx;
 774                         if (!parse.def_uni || !parse.def_multi)
 775                                 goto error;
 776                 } else if (parse.defmgmt)
 777                         goto error;
 778                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 779                                                      parse.idx, false, NULL);
 780                 if (err)
 781                         goto error;
 782                 result->params[parse.idx].cipher = parse.p.cipher;
 783                 result->params[parse.idx].key_len = parse.p.key_len;
 784                 result->params[parse.idx].key = result->data[parse.idx];
 785                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 786
 787                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 788                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 789                         if (no_ht)
 790                                 *no_ht = true;
 791                 }
 792         }
 793
 794         return result;
 795  error:
 796         kfree(result);
 797         return ERR_PTR(err);
 798 }
 799
 800 static int nl80211_key_allowed(struct wireless_dev *wdev)
 801 {
 802         ASSERT_WDEV_LOCK(wdev);
 803
 804         switch (wdev->iftype) {
 805         case NL80211_IFTYPE_AP:
 806         case NL80211_IFTYPE_AP_VLAN:
 807         case NL80211_IFTYPE_P2P_GO:
 808         case NL80211_IFTYPE_MESH_POINT:
 809                 break;
 810         case NL80211_IFTYPE_ADHOC:
 811         case NL80211_IFTYPE_STATION:
 812         case NL80211_IFTYPE_P2P_CLIENT:
 813                 if (!wdev->current_bss)
 814                         return -ENOLINK;
 815                 break;
 816         default:
 817                 return -EINVAL;
 818         }
 819
 820         return 0;
 821 }
 822
 823 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 824 {
 825         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 826         int i;
 827
 828         if (!nl_modes)
 829                 goto nla_put_failure;
 830
 831         i = 0;
 832         while (ifmodes) {
 833                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 834                         goto nla_put_failure;
 835                 ifmodes >>= 1;
 836                 i++;
 837         }
 838
 839         nla_nest_end(msg, nl_modes);
 840         return 0;
 841
 842 nla_put_failure:
 843         return -ENOBUFS;
 844 }
 845
 846 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 847                                           struct sk_buff *msg,
 848                                           bool large)
 849 {
 850         struct nlattr *nl_combis;
 851         int i, j;
 852
 853         nl_combis = nla_nest_start(msg,
 854                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 855         if (!nl_combis)
 856                 goto nla_put_failure;
 857
 858         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 859                 const struct ieee80211_iface_combination *c;
 860                 struct nlattr *nl_combi, *nl_limits;
 861
 862                 c = &wiphy->iface_combinations[i];
 863
 864                 nl_combi = nla_nest_start(msg, i + 1);
 865                 if (!nl_combi)
 866                         goto nla_put_failure;
 867
 868                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 869                 if (!nl_limits)
 870                         goto nla_put_failure;
 871
 872                 for (j = 0; j < c->n_limits; j++) {
 873                         struct nlattr *nl_limit;
 874
 875                         nl_limit = nla_nest_start(msg, j + 1);
 876                         if (!nl_limit)
 877                                 goto nla_put_failure;
 878                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 879                                         c->limits[j].max))
 880                                 goto nla_put_failure;
 881                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 882                                                 c->limits[j].types))
 883                                 goto nla_put_failure;
 884                         nla_nest_end(msg, nl_limit);
 885                 }
 886
 887                 nla_nest_end(msg, nl_limits);
 888
 889                 if (c->beacon_int_infra_match &&
 890                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 891                         goto nla_put_failure;
 892                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 893                                 c->num_different_channels) ||
 894                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 895                                 c->max_interfaces))
 896                         goto nla_put_failure;
 897                 if (large &&
 898                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 899                                 c->radar_detect_widths))
 900                         goto nla_put_failure;
 901
 902                 nla_nest_end(msg, nl_combi);
 903         }
 904
 905         nla_nest_end(msg, nl_combis);
 906
 907         return 0;
 908 nla_put_failure:
 909         return -ENOBUFS;
 910 }
 911
 912 #ifdef CONFIG_PM
 913 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 914                                         struct sk_buff *msg)
 915 {
 916         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 917         struct nlattr *nl_tcp;
 918
 919         if (!tcp)
 920                 return 0;
 921
 922         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 923         if (!nl_tcp)
 924                 return -ENOBUFS;
 925
 926         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 927                         tcp->data_payload_max))
 928                 return -ENOBUFS;
 929
 930         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 931                         tcp->data_payload_max))
 932                 return -ENOBUFS;
 933
 934         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 935                 return -ENOBUFS;
 936
 937         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 938                                 sizeof(*tcp->tok), tcp->tok))
 939                 return -ENOBUFS;
 940
 941         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 942                         tcp->data_interval_max))
 943                 return -ENOBUFS;
 944
 945         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 946                         tcp->wake_payload_max))
 947                 return -ENOBUFS;
 948
 949         nla_nest_end(msg, nl_tcp);
 950         return 0;
 951 }
 952
 953 static int nl80211_send_wowlan(struct sk_buff *msg,
 954                                struct cfg80211_registered_device *dev,
 955                                bool large)
 956 {
 957         struct nlattr *nl_wowlan;
 958
 959         if (!dev->wiphy.wowlan)
 960                 return 0;
 961
 962         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 963         if (!nl_wowlan)
 964                 return -ENOBUFS;
 965
 966         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
 967              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 968             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
 969              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 970             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 971              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 972             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 973              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 974             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
 975              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
 976             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
 977              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
 978             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
 979              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
 980             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
 981              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
 982                 return -ENOBUFS;
 983
 984         if (dev->wiphy.wowlan->n_patterns) {
 985                 struct nl80211_pattern_support pat = {
 986                         .max_patterns = dev->wiphy.wowlan->n_patterns,
 987                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
 988                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
 989                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
 990                 };
 991
 992                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
 993                             sizeof(pat), &pat))
 994                         return -ENOBUFS;
 995         }
 996
 997         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
 998                 return -ENOBUFS;
 999
1000         nla_nest_end(msg, nl_wowlan);
1001
1002         return 0;
1003 }
1004 #endif
1005
1006 static int nl80211_send_coalesce(struct sk_buff *msg,
1007                                  struct cfg80211_registered_device *dev)
1008 {
1009         struct nl80211_coalesce_rule_support rule;
1010
1011         if (!dev->wiphy.coalesce)
1012                 return 0;
1013
1014         rule.max_rules = dev->wiphy.coalesce->n_rules;
1015         rule.max_delay = dev->wiphy.coalesce->max_delay;
1016         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1017         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1018         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1019         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1020
1021         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1022                 return -ENOBUFS;
1023
1024         return 0;
1025 }
1026
1027 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1028                                       struct ieee80211_supported_band *sband)
1029 {
1030         struct nlattr *nl_rates, *nl_rate;
1031         struct ieee80211_rate *rate;
1032         int i;
1033
1034         /* add HT info */
1035         if (sband->ht_cap.ht_supported &&
1036             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1037                      sizeof(sband->ht_cap.mcs),
1038                      &sband->ht_cap.mcs) ||
1039              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1040                          sband->ht_cap.cap) ||
1041              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1042                         sband->ht_cap.ampdu_factor) ||
1043              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1044                         sband->ht_cap.ampdu_density)))
1045                 return -ENOBUFS;
1046
1047         /* add VHT info */
1048         if (sband->vht_cap.vht_supported &&
1049             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1050                      sizeof(sband->vht_cap.vht_mcs),
1051                      &sband->vht_cap.vht_mcs) ||
1052              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1053                          sband->vht_cap.cap)))
1054                 return -ENOBUFS;
1055
1056         /* add bitrates */
1057         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1058         if (!nl_rates)
1059                 return -ENOBUFS;
1060
1061         for (i = 0; i < sband->n_bitrates; i++) {
1062                 nl_rate = nla_nest_start(msg, i);
1063                 if (!nl_rate)
1064                         return -ENOBUFS;
1065
1066                 rate = &sband->bitrates[i];
1067                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1068                                 rate->bitrate))
1069                         return -ENOBUFS;
1070                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1071                     nla_put_flag(msg,
1072                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1073                         return -ENOBUFS;
1074
1075                 nla_nest_end(msg, nl_rate);
1076         }
1077
1078         nla_nest_end(msg, nl_rates);
1079
1080         return 0;
1081 }
1082
1083 static int
1084 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1085                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1086 {
1087         u16 stypes;
1088         struct nlattr *nl_ftypes, *nl_ifs;
1089         enum nl80211_iftype ift;
1090         int i;
1091
1092         if (!mgmt_stypes)
1093                 return 0;
1094
1095         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1096         if (!nl_ifs)
1097                 return -ENOBUFS;
1098
1099         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1100                 nl_ftypes = nla_nest_start(msg, ift);
1101                 if (!nl_ftypes)
1102                         return -ENOBUFS;
1103                 i = 0;
1104                 stypes = mgmt_stypes[ift].tx;
1105                 while (stypes) {
1106                         if ((stypes & 1) &&
1107                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1108                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1109                                 return -ENOBUFS;
1110                         stypes >>= 1;
1111                         i++;
1112                 }
1113                 nla_nest_end(msg, nl_ftypes);
1114         }
1115
1116         nla_nest_end(msg, nl_ifs);
1117
1118         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1119         if (!nl_ifs)
1120                 return -ENOBUFS;
1121
1122         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1123                 nl_ftypes = nla_nest_start(msg, ift);
1124                 if (!nl_ftypes)
1125                         return -ENOBUFS;
1126                 i = 0;
1127                 stypes = mgmt_stypes[ift].rx;
1128                 while (stypes) {
1129                         if ((stypes & 1) &&
1130                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1131                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1132                                 return -ENOBUFS;
1133                         stypes >>= 1;
1134                         i++;
1135                 }
1136                 nla_nest_end(msg, nl_ftypes);
1137         }
1138         nla_nest_end(msg, nl_ifs);
1139
1140         return 0;
1141 }
1142
1143 struct nl80211_dump_wiphy_state {
1144         s64 filter_wiphy;
1145         long start;
1146         long split_start, band_start, chan_start;
1147         bool split;
1148 };
1149
1150 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1151                               struct sk_buff *msg, u32 portid, u32 seq,
1152                               int flags, struct nl80211_dump_wiphy_state *state)
1153 {
1154         void *hdr;
1155         struct nlattr *nl_bands, *nl_band;
1156         struct nlattr *nl_freqs, *nl_freq;
1157         struct nlattr *nl_cmds;
1158         enum ieee80211_band band;
1159         struct ieee80211_channel *chan;
1160         int i;
1161         const struct ieee80211_txrx_stypes *mgmt_stypes =
1162                                 dev->wiphy.mgmt_stypes;
1163         u32 features;
1164
1165         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1166         if (!hdr)
1167                 return -ENOBUFS;
1168
1169         if (WARN_ON(!state))
1170                 return -EINVAL;
1171
1172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1173             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1174                            wiphy_name(&dev->wiphy)) ||
1175             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1176                         cfg80211_rdev_list_generation))
1177                 goto nla_put_failure;
1178
1179         switch (state->split_start) {
1180         case 0:
1181                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1182                                dev->wiphy.retry_short) ||
1183                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1184                                dev->wiphy.retry_long) ||
1185                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1186                                 dev->wiphy.frag_threshold) ||
1187                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1188                                 dev->wiphy.rts_threshold) ||
1189                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1190                                dev->wiphy.coverage_class) ||
1191                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1192                                dev->wiphy.max_scan_ssids) ||
1193                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1194                                dev->wiphy.max_sched_scan_ssids) ||
1195                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1196                                 dev->wiphy.max_scan_ie_len) ||
1197                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1198                                 dev->wiphy.max_sched_scan_ie_len) ||
1199                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1200                                dev->wiphy.max_match_sets))
1201                         goto nla_put_failure;
1202
1203                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1204                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1205                         goto nla_put_failure;
1206                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1207                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1208                         goto nla_put_failure;
1209                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1210                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1211                         goto nla_put_failure;
1212                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1213                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1214                         goto nla_put_failure;
1215                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1216                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1217                         goto nla_put_failure;
1218                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1219                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1220                         goto nla_put_failure;
1221                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1222                     nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1223                         goto nla_put_failure;
1224
1225                 state->split_start++;
1226                 if (state->split)
1227                         break;
1228         case 1:
1229                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1230                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1231                             dev->wiphy.cipher_suites))
1232                         goto nla_put_failure;
1233
1234                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1235                                dev->wiphy.max_num_pmkids))
1236                         goto nla_put_failure;
1237
1238                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1239                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1240                         goto nla_put_failure;
1241
1242                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1243                                 dev->wiphy.available_antennas_tx) ||
1244                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1245                                 dev->wiphy.available_antennas_rx))
1246                         goto nla_put_failure;
1247
1248                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1249                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1250                                 dev->wiphy.probe_resp_offload))
1251                         goto nla_put_failure;
1252
1253                 if ((dev->wiphy.available_antennas_tx ||
1254                      dev->wiphy.available_antennas_rx) &&
1255                     dev->ops->get_antenna) {
1256                         u32 tx_ant = 0, rx_ant = 0;
1257                         int res;
1258                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1259                         if (!res) {
1260                                 if (nla_put_u32(msg,
1261                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1262                                                 tx_ant) ||
1263                                     nla_put_u32(msg,
1264                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1265                                                 rx_ant))
1266                                         goto nla_put_failure;
1267                         }
1268                 }
1269
1270                 state->split_start++;
1271                 if (state->split)
1272                         break;
1273         case 2:
1274                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1275                                         dev->wiphy.interface_modes))
1276                                 goto nla_put_failure;
1277                 state->split_start++;
1278                 if (state->split)
1279                         break;
1280         case 3:
1281                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1282                 if (!nl_bands)
1283                         goto nla_put_failure;
1284
1285                 for (band = state->band_start;
1286                      band < IEEE80211_NUM_BANDS; band++) {
1287                         struct ieee80211_supported_band *sband;
1288
1289                         sband = dev->wiphy.bands[band];
1290
1291                         if (!sband)
1292                                 continue;
1293
1294                         nl_band = nla_nest_start(msg, band);
1295                         if (!nl_band)
1296                                 goto nla_put_failure;
1297
1298                         switch (state->chan_start) {
1299                         case 0:
1300                                 if (nl80211_send_band_rateinfo(msg, sband))
1301                                         goto nla_put_failure;
1302                                 state->chan_start++;
1303                                 if (state->split)
1304                                         break;
1305                         default:
1306                                 /* add frequencies */
1307                                 nl_freqs = nla_nest_start(
1308                                         msg, NL80211_BAND_ATTR_FREQS);
1309                                 if (!nl_freqs)
1310                                         goto nla_put_failure;
1311
1312                                 for (i = state->chan_start - 1;
1313                                      i < sband->n_channels;
1314                                      i++) {
1315                                         nl_freq = nla_nest_start(msg, i);
1316                                         if (!nl_freq)
1317                                                 goto nla_put_failure;
1318
1319                                         chan = &sband->channels[i];
1320
1321                                         if (nl80211_msg_put_channel(
1322                                                         msg, chan,
1323                                                         state->split))
1324                                                 goto nla_put_failure;
1325
1326                                         nla_nest_end(msg, nl_freq);
1327                                         if (state->split)
1328                                                 break;
1329                                 }
1330                                 if (i < sband->n_channels)
1331                                         state->chan_start = i + 2;
1332                                 else
1333                                         state->chan_start = 0;
1334                                 nla_nest_end(msg, nl_freqs);
1335                         }
1336
1337                         nla_nest_end(msg, nl_band);
1338
1339                         if (state->split) {
1340                                 /* start again here */
1341                                 if (state->chan_start)
1342                                         band--;
1343                                 break;
1344                         }
1345                 }
1346                 nla_nest_end(msg, nl_bands);
1347
1348                 if (band < IEEE80211_NUM_BANDS)
1349                         state->band_start = band + 1;
1350                 else
1351                         state->band_start = 0;
1352
1353                 /* if bands & channels are done, continue outside */
1354                 if (state->band_start == 0 && state->chan_start == 0)
1355                         state->split_start++;
1356                 if (state->split)
1357                         break;
1358         case 4:
1359                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1360                 if (!nl_cmds)
1361                         goto nla_put_failure;
1362
1363                 i = 0;
1364 #define CMD(op, n)                                                      \
1365                  do {                                                   \
1366                         if (dev->ops->op) {                             \
1367                                 i++;                                    \
1368                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1369                                         goto nla_put_failure;           \
1370                         }                                               \
1371                 } while (0)
1372
1373                 CMD(add_virtual_intf, NEW_INTERFACE);
1374                 CMD(change_virtual_intf, SET_INTERFACE);
1375                 CMD(add_key, NEW_KEY);
1376                 CMD(start_ap, START_AP);
1377                 CMD(add_station, NEW_STATION);
1378                 CMD(add_mpath, NEW_MPATH);
1379                 CMD(update_mesh_config, SET_MESH_CONFIG);
1380                 CMD(change_bss, SET_BSS);
1381                 CMD(auth, AUTHENTICATE);
1382                 CMD(assoc, ASSOCIATE);
1383                 CMD(deauth, DEAUTHENTICATE);
1384                 CMD(disassoc, DISASSOCIATE);
1385                 CMD(join_ibss, JOIN_IBSS);
1386                 CMD(join_mesh, JOIN_MESH);
1387                 CMD(set_pmksa, SET_PMKSA);
1388                 CMD(del_pmksa, DEL_PMKSA);
1389                 CMD(flush_pmksa, FLUSH_PMKSA);
1390                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1391                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1392                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1393                 CMD(mgmt_tx, FRAME);
1394                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1395                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1396                         i++;
1397                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1398                                 goto nla_put_failure;
1399                 }
1400                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1401                     dev->ops->join_mesh) {
1402                         i++;
1403                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1404                                 goto nla_put_failure;
1405                 }
1406                 CMD(set_wds_peer, SET_WDS_PEER);
1407                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1408                         CMD(tdls_mgmt, TDLS_MGMT);
1409                         CMD(tdls_oper, TDLS_OPER);
1410                 }
1411                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1412                         CMD(sched_scan_start, START_SCHED_SCAN);
1413                 CMD(probe_client, PROBE_CLIENT);
1414                 CMD(set_noack_map, SET_NOACK_MAP);
1415                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1416                         i++;
1417                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1418                                 goto nla_put_failure;
1419                 }
1420                 CMD(start_p2p_device, START_P2P_DEVICE);
1421                 CMD(set_mcast_rate, SET_MCAST_RATE);
1422                 if (state->split) {
1423                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1424                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1425                 }
1426
1427 #ifdef CONFIG_NL80211_TESTMODE
1428                 CMD(testmode_cmd, TESTMODE);
1429 #endif
1430
1431 #undef CMD
1432
1433                 if (dev->ops->connect || dev->ops->auth) {
1434                         i++;
1435                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1436                                 goto nla_put_failure;
1437                 }
1438
1439                 if (dev->ops->disconnect || dev->ops->deauth) {
1440                         i++;
1441                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1442                                 goto nla_put_failure;
1443                 }
1444
1445                 nla_nest_end(msg, nl_cmds);
1446                 state->split_start++;
1447                 if (state->split)
1448                         break;
1449         case 5:
1450                 if (dev->ops->remain_on_channel &&
1451                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1452                     nla_put_u32(msg,
1453                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1454                                 dev->wiphy.max_remain_on_channel_duration))
1455                         goto nla_put_failure;
1456
1457                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1458                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1459                         goto nla_put_failure;
1460
1461                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1462                         goto nla_put_failure;
1463                 state->split_start++;
1464                 if (state->split)
1465                         break;
1466         case 6:
1467 #ifdef CONFIG_PM
1468                 if (nl80211_send_wowlan(msg, dev, state->split))
1469                         goto nla_put_failure;
1470                 state->split_start++;
1471                 if (state->split)
1472                         break;
1473 #else
1474                 state->split_start++;
1475 #endif
1476         case 7:
1477                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1478                                         dev->wiphy.software_iftypes))
1479                         goto nla_put_failure;
1480
1481                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1482                                                    state->split))
1483                         goto nla_put_failure;
1484
1485                 state->split_start++;
1486                 if (state->split)
1487                         break;
1488         case 8:
1489                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1490                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1491                                 dev->wiphy.ap_sme_capa))
1492                         goto nla_put_failure;
1493
1494                 features = dev->wiphy.features;
1495                 /*
1496                  * We can only add the per-channel limit information if the
1497                  * dump is split, otherwise it makes it too big. Therefore
1498                  * only advertise it in that case.
1499                  */
1500                 if (state->split)
1501                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1502                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1503                         goto nla_put_failure;
1504
1505                 if (dev->wiphy.ht_capa_mod_mask &&
1506                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1507                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1508                             dev->wiphy.ht_capa_mod_mask))
1509                         goto nla_put_failure;
1510
1511                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1512                     dev->wiphy.max_acl_mac_addrs &&
1513                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1514                                 dev->wiphy.max_acl_mac_addrs))
1515                         goto nla_put_failure;
1516
1517                 /*
1518                  * Any information below this point is only available to
1519                  * applications that can deal with it being split. This
1520                  * helps ensure that newly added capabilities don't break
1521                  * older tools by overrunning their buffers.
1522                  *
1523                  * We still increment split_start so that in the split
1524                  * case we'll continue with more data in the next round,
1525                  * but break unconditionally so unsplit data stops here.
1526                  */
1527                 state->split_start++;
1528                 break;
1529         case 9:
1530                 if (dev->wiphy.extended_capabilities &&
1531                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1532                              dev->wiphy.extended_capabilities_len,
1533                              dev->wiphy.extended_capabilities) ||
1534                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1535                              dev->wiphy.extended_capabilities_len,
1536                              dev->wiphy.extended_capabilities_mask)))
1537                         goto nla_put_failure;
1538
1539                 if (dev->wiphy.vht_capa_mod_mask &&
1540                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1541                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1542                             dev->wiphy.vht_capa_mod_mask))
1543                         goto nla_put_failure;
1544
1545                 state->split_start++;
1546                 break;
1547         case 10:
1548                 if (nl80211_send_coalesce(msg, dev))
1549                         goto nla_put_failure;
1550
1551                 /* done */
1552                 state->split_start = 0;
1553                 break;
1554         }
1555         return genlmsg_end(msg, hdr);
1556
1557  nla_put_failure:
1558         genlmsg_cancel(msg, hdr);
1559         return -EMSGSIZE;
1560 }
1561
1562 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1563                                     struct netlink_callback *cb,
1564                                     struct nl80211_dump_wiphy_state *state)
1565 {
1566         struct nlattr **tb = nl80211_fam.attrbuf;
1567         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1568                               tb, nl80211_fam.maxattr, nl80211_policy);
1569         /* ignore parse errors for backward compatibility */
1570         if (ret)
1571                 return 0;
1572
1573         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1574         if (tb[NL80211_ATTR_WIPHY])
1575                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1576         if (tb[NL80211_ATTR_WDEV])
1577                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1578         if (tb[NL80211_ATTR_IFINDEX]) {
1579                 struct net_device *netdev;
1580                 struct cfg80211_registered_device *rdev;
1581                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1582
1583                 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1584                 if (!netdev)
1585                         return -ENODEV;
1586                 if (netdev->ieee80211_ptr) {
1587                         rdev = wiphy_to_dev(
1588                                 netdev->ieee80211_ptr->wiphy);
1589                         state->filter_wiphy = rdev->wiphy_idx;
1590                 }
1591                 dev_put(netdev);
1592         }
1593
1594         return 0;
1595 }
1596
1597 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1598 {
1599         int idx = 0, ret;
1600         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1601         struct cfg80211_registered_device *dev;
1602
1603         rtnl_lock();
1604         if (!state) {
1605                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1606                 if (!state) {
1607                         rtnl_unlock();
1608                         return -ENOMEM;
1609                 }
1610                 state->filter_wiphy = -1;
1611                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1612                 if (ret) {
1613                         kfree(state);
1614                         rtnl_unlock();
1615                         return ret;
1616                 }
1617                 cb->args[0] = (long)state;
1618         }
1619
1620         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1621                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1622                         continue;
1623                 if (++idx <= state->start)
1624                         continue;
1625                 if (state->filter_wiphy != -1 &&
1626                     state->filter_wiphy != dev->wiphy_idx)
1627                         continue;
1628                 /* attempt to fit multiple wiphy data chunks into the skb */
1629                 do {
1630                         ret = nl80211_send_wiphy(dev, skb,
1631                                                  NETLINK_CB(cb->skb).portid,
1632                                                  cb->nlh->nlmsg_seq,
1633                                                  NLM_F_MULTI, state);
1634                         if (ret < 0) {
1635                                 /*
1636                                  * If sending the wiphy data didn't fit (ENOBUFS
1637                                  * or EMSGSIZE returned), this SKB is still
1638                                  * empty (so it's not too big because another
1639                                  * wiphy dataset is already in the skb) and
1640                                  * we've not tried to adjust the dump allocation
1641                                  * yet ... then adjust the alloc size to be
1642                                  * bigger, and return 1 but with the empty skb.
1643                                  * This results in an empty message being RX'ed
1644                                  * in userspace, but that is ignored.
1645                                  *
1646                                  * We can then retry with the larger buffer.
1647                                  */
1648                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1649                                     !skb->len &&
1650                                     cb->min_dump_alloc < 4096) {
1651                                         cb->min_dump_alloc = 4096;
1652                                         rtnl_unlock();
1653                                         return 1;
1654                                 }
1655                                 idx--;
1656                                 break;
1657                         }
1658                 } while (state->split_start > 0);
1659                 break;
1660         }
1661         rtnl_unlock();
1662
1663         state->start = idx;
1664
1665         return skb->len;
1666 }
1667
1668 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1669 {
1670         kfree((void *)cb->args[0]);
1671         return 0;
1672 }
1673
1674 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1675 {
1676         struct sk_buff *msg;
1677         struct cfg80211_registered_device *dev = info->user_ptr[0];
1678         struct nl80211_dump_wiphy_state state = {};
1679
1680         msg = nlmsg_new(4096, GFP_KERNEL);
1681         if (!msg)
1682                 return -ENOMEM;
1683
1684         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1685                                &state) < 0) {
1686                 nlmsg_free(msg);
1687                 return -ENOBUFS;
1688         }
1689
1690         return genlmsg_reply(msg, info);
1691 }
1692
1693 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1694         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1695         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1696         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1697         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1698         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1699 };
1700
1701 static int parse_txq_params(struct nlattr *tb[],
1702                             struct ieee80211_txq_params *txq_params)
1703 {
1704         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1705             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1706             !tb[NL80211_TXQ_ATTR_AIFS])
1707                 return -EINVAL;
1708
1709         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1710         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1711         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1712         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1713         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1714
1715         if (txq_params->ac >= NL80211_NUM_ACS)
1716                 return -EINVAL;
1717
1718         return 0;
1719 }
1720
1721 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1722 {
1723         /*
1724          * You can only set the channel explicitly for WDS interfaces,
1725          * all others have their channel managed via their respective
1726          * "establish a connection" command (connect, join, ...)
1727          *
1728          * For AP/GO and mesh mode, the channel can be set with the
1729          * channel userspace API, but is only stored and passed to the
1730          * low-level driver when the AP starts or the mesh is joined.
1731          * This is for backward compatibility, userspace can also give
1732          * the channel in the start-ap or join-mesh commands instead.
1733          *
1734          * Monitors are special as they are normally slaved to
1735          * whatever else is going on, so they have their own special
1736          * operation to set the monitor channel if possible.
1737          */
1738         return !wdev ||
1739                 wdev->iftype == NL80211_IFTYPE_AP ||
1740                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1741                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1742                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1743 }
1744
1745 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1746                                  struct genl_info *info,
1747                                  struct cfg80211_chan_def *chandef)
1748 {
1749         u32 control_freq;
1750
1751         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1752                 return -EINVAL;
1753
1754         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1755
1756         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1757         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1758         chandef->center_freq1 = control_freq;
1759         chandef->center_freq2 = 0;
1760
1761         /* Primary channel not allowed */
1762         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1763                 return -EINVAL;
1764
1765         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1766                 enum nl80211_channel_type chantype;
1767
1768                 chantype = nla_get_u32(
1769                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1770
1771                 switch (chantype) {
1772                 case NL80211_CHAN_NO_HT:
1773                 case NL80211_CHAN_HT20:
1774                 case NL80211_CHAN_HT40PLUS:
1775                 case NL80211_CHAN_HT40MINUS:
1776                         cfg80211_chandef_create(chandef, chandef->chan,
1777                                                 chantype);
1778                         break;
1779                 default:
1780                         return -EINVAL;
1781                 }
1782         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1783                 chandef->width =
1784                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1785                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1786                         chandef->center_freq1 =
1787                                 nla_get_u32(
1788                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1789                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1790                         chandef->center_freq2 =
1791                                 nla_get_u32(
1792                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1793         }
1794
1795         if (!cfg80211_chandef_valid(chandef))
1796                 return -EINVAL;
1797
1798         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1799                                      IEEE80211_CHAN_DISABLED))
1800                 return -EINVAL;
1801
1802         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1803              chandef->width == NL80211_CHAN_WIDTH_10) &&
1804             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1805                 return -EINVAL;
1806
1807         return 0;
1808 }
1809
1810 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1811                                  struct wireless_dev *wdev,
1812                                  struct genl_info *info)
1813 {
1814         struct cfg80211_chan_def chandef;
1815         int result;
1816         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1817
1818         if (wdev)
1819                 iftype = wdev->iftype;
1820
1821         if (!nl80211_can_set_dev_channel(wdev))
1822                 return -EOPNOTSUPP;
1823
1824         result = nl80211_parse_chandef(rdev, info, &chandef);
1825         if (result)
1826                 return result;
1827
1828         switch (iftype) {
1829         case NL80211_IFTYPE_AP:
1830         case NL80211_IFTYPE_P2P_GO:
1831                 if (wdev->beacon_interval) {
1832                         result = -EBUSY;
1833                         break;
1834                 }
1835                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1836                         result = -EINVAL;
1837                         break;
1838                 }
1839                 wdev->preset_chandef = chandef;
1840                 result = 0;
1841                 break;
1842         case NL80211_IFTYPE_MESH_POINT:
1843                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1844                 break;
1845         case NL80211_IFTYPE_MONITOR:
1846                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1847                 break;
1848         default:
1849                 result = -EINVAL;
1850         }
1851
1852         return result;
1853 }
1854
1855 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1856 {
1857         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1858         struct net_device *netdev = info->user_ptr[1];
1859
1860         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1861 }
1862
1863 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1864 {
1865         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1866         struct net_device *dev = info->user_ptr[1];
1867         struct wireless_dev *wdev = dev->ieee80211_ptr;
1868         const u8 *bssid;
1869
1870         if (!info->attrs[NL80211_ATTR_MAC])
1871                 return -EINVAL;
1872
1873         if (netif_running(dev))
1874                 return -EBUSY;
1875
1876         if (!rdev->ops->set_wds_peer)
1877                 return -EOPNOTSUPP;
1878
1879         if (wdev->iftype != NL80211_IFTYPE_WDS)
1880                 return -EOPNOTSUPP;
1881
1882         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1883         return rdev_set_wds_peer(rdev, dev, bssid);
1884 }
1885
1886
1887 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1888 {
1889         struct cfg80211_registered_device *rdev;
1890         struct net_device *netdev = NULL;
1891         struct wireless_dev *wdev;
1892         int result = 0, rem_txq_params = 0;
1893         struct nlattr *nl_txq_params;
1894         u32 changed;
1895         u8 retry_short = 0, retry_long = 0;
1896         u32 frag_threshold = 0, rts_threshold = 0;
1897         u8 coverage_class = 0;
1898
1899         ASSERT_RTNL();
1900
1901         /*
1902          * Try to find the wiphy and netdev. Normally this
1903          * function shouldn't need the netdev, but this is
1904          * done for backward compatibility -- previously
1905          * setting the channel was done per wiphy, but now
1906          * it is per netdev. Previous userland like hostapd
1907          * also passed a netdev to set_wiphy, so that it is
1908          * possible to let that go to the right netdev!
1909          */
1910
1911         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1912                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1913
1914                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1915                 if (netdev && netdev->ieee80211_ptr)
1916                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1917                 else
1918                         netdev = NULL;
1919         }
1920
1921         if (!netdev) {
1922                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1923                                                   info->attrs);
1924                 if (IS_ERR(rdev))
1925                         return PTR_ERR(rdev);
1926                 wdev = NULL;
1927                 netdev = NULL;
1928                 result = 0;
1929         } else
1930                 wdev = netdev->ieee80211_ptr;
1931
1932         /*
1933          * end workaround code, by now the rdev is available
1934          * and locked, and wdev may or may not be NULL.
1935          */
1936
1937         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1938                 result = cfg80211_dev_rename(
1939                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1940
1941         if (result)
1942                 goto bad_res;
1943
1944         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1945                 struct ieee80211_txq_params txq_params;
1946                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1947
1948                 if (!rdev->ops->set_txq_params) {
1949                         result = -EOPNOTSUPP;
1950                         goto bad_res;
1951                 }
1952
1953                 if (!netdev) {
1954                         result = -EINVAL;
1955                         goto bad_res;
1956                 }
1957
1958                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1959                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1960                         result = -EINVAL;
1961                         goto bad_res;
1962                 }
1963
1964                 if (!netif_running(netdev)) {
1965                         result = -ENETDOWN;
1966                         goto bad_res;
1967                 }
1968
1969                 nla_for_each_nested(nl_txq_params,
1970                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1971                                     rem_txq_params) {
1972                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1973                                   nla_data(nl_txq_params),
1974                                   nla_len(nl_txq_params),
1975                                   txq_params_policy);
1976                         result = parse_txq_params(tb, &txq_params);
1977                         if (result)
1978                                 goto bad_res;
1979
1980                         result = rdev_set_txq_params(rdev, netdev,
1981                                                      &txq_params);
1982                         if (result)
1983                                 goto bad_res;
1984                 }
1985         }
1986
1987         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1988                 result = __nl80211_set_channel(rdev,
1989                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1990                                 info);
1991                 if (result)
1992                         goto bad_res;
1993         }
1994
1995         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
1996                 struct wireless_dev *txp_wdev = wdev;
1997                 enum nl80211_tx_power_setting type;
1998                 int idx, mbm = 0;
1999
2000                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2001                         txp_wdev = NULL;
2002
2003                 if (!rdev->ops->set_tx_power) {
2004                         result = -EOPNOTSUPP;
2005                         goto bad_res;
2006                 }
2007
2008                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2009                 type = nla_get_u32(info->attrs[idx]);
2010
2011                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2012                     (type != NL80211_TX_POWER_AUTOMATIC)) {
2013                         result = -EINVAL;
2014                         goto bad_res;
2015                 }
2016
2017                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2018                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2019                         mbm = nla_get_u32(info->attrs[idx]);
2020                 }
2021
2022                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2023                 if (result)
2024                         goto bad_res;
2025         }
2026
2027         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2028             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2029                 u32 tx_ant, rx_ant;
2030                 if ((!rdev->wiphy.available_antennas_tx &&
2031                      !rdev->wiphy.available_antennas_rx) ||
2032                     !rdev->ops->set_antenna) {
2033                         result = -EOPNOTSUPP;
2034                         goto bad_res;
2035                 }
2036
2037                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2038                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2039
2040                 /* reject antenna configurations which don't match the
2041                  * available antenna masks, except for the "all" mask */
2042                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2043                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2044                         result = -EINVAL;
2045                         goto bad_res;
2046                 }
2047
2048                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2049                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2050
2051                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2052                 if (result)
2053                         goto bad_res;
2054         }
2055
2056         changed = 0;
2057
2058         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2059                 retry_short = nla_get_u8(
2060                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2061                 if (retry_short == 0) {
2062                         result = -EINVAL;
2063                         goto bad_res;
2064                 }
2065                 changed |= WIPHY_PARAM_RETRY_SHORT;
2066         }
2067
2068         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2069                 retry_long = nla_get_u8(
2070                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2071                 if (retry_long == 0) {
2072                         result = -EINVAL;
2073                         goto bad_res;
2074                 }
2075                 changed |= WIPHY_PARAM_RETRY_LONG;
2076         }
2077
2078         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2079                 frag_threshold = nla_get_u32(
2080                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2081                 if (frag_threshold < 256) {
2082                         result = -EINVAL;
2083                         goto bad_res;
2084                 }
2085                 if (frag_threshold != (u32) -1) {
2086                         /*
2087                          * Fragments (apart from the last one) are required to
2088                          * have even length. Make the fragmentation code
2089                          * simpler by stripping LSB should someone try to use
2090                          * odd threshold value.
2091                          */
2092                         frag_threshold &= ~0x1;
2093                 }
2094                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2095         }
2096
2097         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2098                 rts_threshold = nla_get_u32(
2099                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2100                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2101         }
2102
2103         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2104                 coverage_class = nla_get_u8(
2105                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2106                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2107         }
2108
2109         if (changed) {
2110                 u8 old_retry_short, old_retry_long;
2111                 u32 old_frag_threshold, old_rts_threshold;
2112                 u8 old_coverage_class;
2113
2114                 if (!rdev->ops->set_wiphy_params) {
2115                         result = -EOPNOTSUPP;
2116                         goto bad_res;
2117                 }
2118
2119                 old_retry_short = rdev->wiphy.retry_short;
2120                 old_retry_long = rdev->wiphy.retry_long;
2121                 old_frag_threshold = rdev->wiphy.frag_threshold;
2122                 old_rts_threshold = rdev->wiphy.rts_threshold;
2123                 old_coverage_class = rdev->wiphy.coverage_class;
2124
2125                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2126                         rdev->wiphy.retry_short = retry_short;
2127                 if (changed & WIPHY_PARAM_RETRY_LONG)
2128                         rdev->wiphy.retry_long = retry_long;
2129                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2130                         rdev->wiphy.frag_threshold = frag_threshold;
2131                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2132                         rdev->wiphy.rts_threshold = rts_threshold;
2133                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2134                         rdev->wiphy.coverage_class = coverage_class;
2135
2136                 result = rdev_set_wiphy_params(rdev, changed);
2137                 if (result) {
2138                         rdev->wiphy.retry_short = old_retry_short;
2139                         rdev->wiphy.retry_long = old_retry_long;
2140                         rdev->wiphy.frag_threshold = old_frag_threshold;
2141                         rdev->wiphy.rts_threshold = old_rts_threshold;
2142                         rdev->wiphy.coverage_class = old_coverage_class;
2143                 }
2144         }
2145
2146  bad_res:
2147         if (netdev)
2148                 dev_put(netdev);
2149         return result;
2150 }
2151
2152 static inline u64 wdev_id(struct wireless_dev *wdev)
2153 {
2154         return (u64)wdev->identifier |
2155                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2156 }
2157
2158 static int nl80211_send_chandef(struct sk_buff *msg,
2159                                  struct cfg80211_chan_def *chandef)
2160 {
2161         WARN_ON(!cfg80211_chandef_valid(chandef));
2162
2163         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2164                         chandef->chan->center_freq))
2165                 return -ENOBUFS;
2166         switch (chandef->width) {
2167         case NL80211_CHAN_WIDTH_20_NOHT:
2168         case NL80211_CHAN_WIDTH_20:
2169         case NL80211_CHAN_WIDTH_40:
2170                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2171                                 cfg80211_get_chandef_type(chandef)))
2172                         return -ENOBUFS;
2173                 break;
2174         default:
2175                 break;
2176         }
2177         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2178                 return -ENOBUFS;
2179         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2180                 return -ENOBUFS;
2181         if (chandef->center_freq2 &&
2182             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2183                 return -ENOBUFS;
2184         return 0;
2185 }
2186
2187 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2188                               struct cfg80211_registered_device *rdev,
2189                               struct wireless_dev *wdev)
2190 {
2191         struct net_device *dev = wdev->netdev;
2192         void *hdr;
2193
2194         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2195         if (!hdr)
2196                 return -1;
2197
2198         if (dev &&
2199             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2200              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2201                 goto nla_put_failure;
2202
2203         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2204             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2205             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2206             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2207             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2208                         rdev->devlist_generation ^
2209                         (cfg80211_rdev_list_generation << 2)))
2210                 goto nla_put_failure;
2211
2212         if (rdev->ops->get_channel) {
2213                 int ret;
2214                 struct cfg80211_chan_def chandef;
2215
2216                 ret = rdev_get_channel(rdev, wdev, &chandef);
2217                 if (ret == 0) {
2218                         if (nl80211_send_chandef(msg, &chandef))
2219                                 goto nla_put_failure;
2220                 }
2221         }
2222
2223         if (wdev->ssid_len) {
2224                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2225                         goto nla_put_failure;
2226         }
2227
2228         return genlmsg_end(msg, hdr);
2229
2230  nla_put_failure:
2231         genlmsg_cancel(msg, hdr);
2232         return -EMSGSIZE;
2233 }
2234
2235 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2236 {
2237         int wp_idx = 0;
2238         int if_idx = 0;
2239         int wp_start = cb->args[0];
2240         int if_start = cb->args[1];
2241         struct cfg80211_registered_device *rdev;
2242         struct wireless_dev *wdev;
2243
2244         rtnl_lock();
2245         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2246                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2247                         continue;
2248                 if (wp_idx < wp_start) {
2249                         wp_idx++;
2250                         continue;
2251                 }
2252                 if_idx = 0;
2253
2254                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2255                         if (if_idx < if_start) {
2256                                 if_idx++;
2257                                 continue;
2258                         }
2259                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2260                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2261                                                rdev, wdev) < 0) {
2262                                 goto out;
2263                         }
2264                         if_idx++;
2265                 }
2266
2267                 wp_idx++;
2268         }
2269  out:
2270         rtnl_unlock();
2271
2272         cb->args[0] = wp_idx;
2273         cb->args[1] = if_idx;
2274
2275         return skb->len;
2276 }
2277
2278 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2279 {
2280         struct sk_buff *msg;
2281         struct cfg80211_registered_device *dev = info->user_ptr[0];
2282         struct wireless_dev *wdev = info->user_ptr[1];
2283
2284         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2285         if (!msg)
2286                 return -ENOMEM;
2287
2288         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2289                                dev, wdev) < 0) {
2290                 nlmsg_free(msg);
2291                 return -ENOBUFS;
2292         }
2293
2294         return genlmsg_reply(msg, info);
2295 }
2296
2297 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2298         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2299         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2300         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2301         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2302         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2303         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2304 };
2305
2306 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2307 {
2308         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2309         int flag;
2310
2311         *mntrflags = 0;
2312
2313         if (!nla)
2314                 return -EINVAL;
2315
2316         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2317                              nla, mntr_flags_policy))
2318                 return -EINVAL;
2319
2320         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2321                 if (flags[flag])
2322                         *mntrflags |= (1<<flag);
2323
2324         return 0;
2325 }
2326
2327 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2328                                struct net_device *netdev, u8 use_4addr,
2329                                enum nl80211_iftype iftype)
2330 {
2331         if (!use_4addr) {
2332                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2333                         return -EBUSY;
2334                 return 0;
2335         }
2336
2337         switch (iftype) {
2338         case NL80211_IFTYPE_AP_VLAN:
2339                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2340                         return 0;
2341                 break;
2342         case NL80211_IFTYPE_STATION:
2343                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2344                         return 0;
2345                 break;
2346         default:
2347                 break;
2348         }
2349
2350         return -EOPNOTSUPP;
2351 }
2352
2353 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2354 {
2355         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2356         struct vif_params params;
2357         int err;
2358         enum nl80211_iftype otype, ntype;
2359         struct net_device *dev = info->user_ptr[1];
2360         u32 _flags, *flags = NULL;
2361         bool change = false;
2362
2363         memset(&params, 0, sizeof(params));
2364
2365         otype = ntype = dev->ieee80211_ptr->iftype;
2366
2367         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2368                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2369                 if (otype != ntype)
2370                         change = true;
2371                 if (ntype > NL80211_IFTYPE_MAX)
2372                         return -EINVAL;
2373         }
2374
2375         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2376                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2377
2378                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2379                         return -EINVAL;
2380                 if (netif_running(dev))
2381                         return -EBUSY;
2382
2383                 wdev_lock(wdev);
2384                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2385                              IEEE80211_MAX_MESH_ID_LEN);
2386                 wdev->mesh_id_up_len =
2387                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2388                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2389                        wdev->mesh_id_up_len);
2390                 wdev_unlock(wdev);
2391         }
2392
2393         if (info->attrs[NL80211_ATTR_4ADDR]) {
2394                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2395                 change = true;
2396                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2397                 if (err)
2398                         return err;
2399         } else {
2400                 params.use_4addr = -1;
2401         }
2402
2403         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2404                 if (ntype != NL80211_IFTYPE_MONITOR)
2405                         return -EINVAL;
2406                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2407                                           &_flags);
2408                 if (err)
2409                         return err;
2410
2411                 flags = &_flags;
2412                 change = true;
2413         }
2414
2415         if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2416             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2417                 return -EOPNOTSUPP;
2418
2419         if (change)
2420                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2421         else
2422                 err = 0;
2423
2424         if (!err && params.use_4addr != -1)
2425                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2426
2427         return err;
2428 }
2429
2430 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2431 {
2432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2433         struct vif_params params;
2434         struct wireless_dev *wdev;
2435         struct sk_buff *msg;
2436         int err;
2437         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2438         u32 flags;
2439
2440         memset(&params, 0, sizeof(params));
2441
2442         if (!info->attrs[NL80211_ATTR_IFNAME])
2443                 return -EINVAL;
2444
2445         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2446                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2447                 if (type > NL80211_IFTYPE_MAX)
2448                         return -EINVAL;
2449         }
2450
2451         if (!rdev->ops->add_virtual_intf ||
2452             !(rdev->wiphy.interface_modes & (1 << type)))
2453                 return -EOPNOTSUPP;
2454
2455         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2456                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2457                            ETH_ALEN);
2458                 if (!is_valid_ether_addr(params.macaddr))
2459                         return -EADDRNOTAVAIL;
2460         }
2461
2462         if (info->attrs[NL80211_ATTR_4ADDR]) {
2463                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2464                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2465                 if (err)
2466                         return err;
2467         }
2468
2469         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2470         if (!msg)
2471                 return -ENOMEM;
2472
2473         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2474                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2475                                   &flags);
2476
2477         if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2478             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2479                 return -EOPNOTSUPP;
2480
2481         wdev = rdev_add_virtual_intf(rdev,
2482                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2483                                 type, err ? NULL : &flags, &params);
2484         if (IS_ERR(wdev)) {
2485                 nlmsg_free(msg);
2486                 return PTR_ERR(wdev);
2487         }
2488
2489         switch (type) {
2490         case NL80211_IFTYPE_MESH_POINT:
2491                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2492                         break;
2493                 wdev_lock(wdev);
2494                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2495                              IEEE80211_MAX_MESH_ID_LEN);
2496                 wdev->mesh_id_up_len =
2497                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2498                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2499                        wdev->mesh_id_up_len);
2500                 wdev_unlock(wdev);
2501                 break;
2502         case NL80211_IFTYPE_P2P_DEVICE:
2503                 /*
2504                  * P2P Device doesn't have a netdev, so doesn't go
2505                  * through the netdev notifier and must be added here
2506                  */
2507                 mutex_init(&wdev->mtx);
2508                 INIT_LIST_HEAD(&wdev->event_list);
2509                 spin_lock_init(&wdev->event_lock);
2510                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2511                 spin_lock_init(&wdev->mgmt_registrations_lock);
2512
2513                 wdev->identifier = ++rdev->wdev_id;
2514                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2515                 rdev->devlist_generation++;
2516                 break;
2517         default:
2518                 break;
2519         }
2520
2521         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2522                                rdev, wdev) < 0) {
2523                 nlmsg_free(msg);
2524                 return -ENOBUFS;
2525         }
2526
2527         return genlmsg_reply(msg, info);
2528 }
2529
2530 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2531 {
2532         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2533         struct wireless_dev *wdev = info->user_ptr[1];
2534
2535         if (!rdev->ops->del_virtual_intf)
2536                 return -EOPNOTSUPP;
2537
2538         /*
2539          * If we remove a wireless device without a netdev then clear
2540          * user_ptr[1] so that nl80211_post_doit won't dereference it
2541          * to check if it needs to do dev_put(). Otherwise it crashes
2542          * since the wdev has been freed, unlike with a netdev where
2543          * we need the dev_put() for the netdev to really be freed.
2544          */
2545         if (!wdev->netdev)
2546                 info->user_ptr[1] = NULL;
2547
2548         return rdev_del_virtual_intf(rdev, wdev);
2549 }
2550
2551 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2552 {
2553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2554         struct net_device *dev = info->user_ptr[1];
2555         u16 noack_map;
2556
2557         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2558                 return -EINVAL;
2559
2560         if (!rdev->ops->set_noack_map)
2561                 return -EOPNOTSUPP;
2562
2563         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2564
2565         return rdev_set_noack_map(rdev, dev, noack_map);
2566 }
2567
2568 struct get_key_cookie {
2569         struct sk_buff *msg;
2570         int error;
2571         int idx;
2572 };
2573
2574 static void get_key_callback(void *c, struct key_params *params)
2575 {
2576         struct nlattr *key;
2577         struct get_key_cookie *cookie = c;
2578
2579         if ((params->key &&
2580              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2581                      params->key_len, params->key)) ||
2582             (params->seq &&
2583              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2584                      params->seq_len, params->seq)) ||
2585             (params->cipher &&
2586              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2587                          params->cipher)))
2588                 goto nla_put_failure;
2589
2590         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2591         if (!key)
2592                 goto nla_put_failure;
2593
2594         if ((params->key &&
2595              nla_put(cookie->msg, NL80211_KEY_DATA,
2596                      params->key_len, params->key)) ||
2597             (params->seq &&
2598              nla_put(cookie->msg, NL80211_KEY_SEQ,
2599                      params->seq_len, params->seq)) ||
2600             (params->cipher &&
2601              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2602                          params->cipher)))
2603                 goto nla_put_failure;
2604
2605         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2606                 goto nla_put_failure;
2607
2608         nla_nest_end(cookie->msg, key);
2609
2610         return;
2611  nla_put_failure:
2612         cookie->error = 1;
2613 }
2614
2615 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2616 {
2617         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2618         int err;
2619         struct net_device *dev = info->user_ptr[1];
2620         u8 key_idx = 0;
2621         const u8 *mac_addr = NULL;
2622         bool pairwise;
2623         struct get_key_cookie cookie = {
2624                 .error = 0,
2625         };
2626         void *hdr;
2627         struct sk_buff *msg;
2628
2629         if (info->attrs[NL80211_ATTR_KEY_IDX])
2630                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2631
2632         if (key_idx > 5)
2633                 return -EINVAL;
2634
2635         if (info->attrs[NL80211_ATTR_MAC])
2636                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2637
2638         pairwise = !!mac_addr;
2639         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2640                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2641                 if (kt >= NUM_NL80211_KEYTYPES)
2642                         return -EINVAL;
2643                 if (kt != NL80211_KEYTYPE_GROUP &&
2644                     kt != NL80211_KEYTYPE_PAIRWISE)
2645                         return -EINVAL;
2646                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2647         }
2648
2649         if (!rdev->ops->get_key)
2650                 return -EOPNOTSUPP;
2651
2652         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2653         if (!msg)
2654                 return -ENOMEM;
2655
2656         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2657                              NL80211_CMD_NEW_KEY);
2658         if (IS_ERR(hdr))
2659                 return PTR_ERR(hdr);
2660
2661         cookie.msg = msg;
2662         cookie.idx = key_idx;
2663
2664         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2665             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2666                 goto nla_put_failure;
2667         if (mac_addr &&
2668             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2669                 goto nla_put_failure;
2670
2671         if (pairwise && mac_addr &&
2672             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2673                 return -ENOENT;
2674
2675         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2676                            get_key_callback);
2677
2678         if (err)
2679                 goto free_msg;
2680
2681         if (cookie.error)
2682                 goto nla_put_failure;
2683
2684         genlmsg_end(msg, hdr);
2685         return genlmsg_reply(msg, info);
2686
2687  nla_put_failure:
2688         err = -ENOBUFS;
2689  free_msg:
2690         nlmsg_free(msg);
2691         return err;
2692 }
2693
2694 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2695 {
2696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2697         struct key_parse key;
2698         int err;
2699         struct net_device *dev = info->user_ptr[1];
2700
2701         err = nl80211_parse_key(info, &key);
2702         if (err)
2703                 return err;
2704
2705         if (key.idx < 0)
2706                 return -EINVAL;
2707
2708         /* only support setting default key */
2709         if (!key.def && !key.defmgmt)
2710                 return -EINVAL;
2711
2712         wdev_lock(dev->ieee80211_ptr);
2713
2714         if (key.def) {
2715                 if (!rdev->ops->set_default_key) {
2716                         err = -EOPNOTSUPP;
2717                         goto out;
2718                 }
2719
2720                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2721                 if (err)
2722                         goto out;
2723
2724                 err = rdev_set_default_key(rdev, dev, key.idx,
2725                                                  key.def_uni, key.def_multi);
2726
2727                 if (err)
2728                         goto out;
2729
2730 #ifdef CONFIG_CFG80211_WEXT
2731                 dev->ieee80211_ptr->wext.default_key = key.idx;
2732 #endif
2733         } else {
2734                 if (key.def_uni || !key.def_multi) {
2735                         err = -EINVAL;
2736                         goto out;
2737                 }
2738
2739                 if (!rdev->ops->set_default_mgmt_key) {
2740                         err = -EOPNOTSUPP;
2741                         goto out;
2742                 }
2743
2744                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2745                 if (err)
2746                         goto out;
2747
2748                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2749                 if (err)
2750                         goto out;
2751
2752 #ifdef CONFIG_CFG80211_WEXT
2753                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2754 #endif
2755         }
2756
2757  out:
2758         wdev_unlock(dev->ieee80211_ptr);
2759
2760         return err;
2761 }
2762
2763 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2764 {
2765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2766         int err;
2767         struct net_device *dev = info->user_ptr[1];
2768         struct key_parse key;
2769         const u8 *mac_addr = NULL;
2770
2771         err = nl80211_parse_key(info, &key);
2772         if (err)
2773                 return err;
2774
2775         if (!key.p.key)
2776                 return -EINVAL;
2777
2778         if (info->attrs[NL80211_ATTR_MAC])
2779                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2780
2781         if (key.type == -1) {
2782                 if (mac_addr)
2783                         key.type = NL80211_KEYTYPE_PAIRWISE;
2784                 else
2785                         key.type = NL80211_KEYTYPE_GROUP;
2786         }
2787
2788         /* for now */
2789         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2790             key.type != NL80211_KEYTYPE_GROUP)
2791                 return -EINVAL;
2792
2793         if (!rdev->ops->add_key)
2794                 return -EOPNOTSUPP;
2795
2796         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2797                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2798                                            mac_addr))
2799                 return -EINVAL;
2800
2801         wdev_lock(dev->ieee80211_ptr);
2802         err = nl80211_key_allowed(dev->ieee80211_ptr);
2803         if (!err)
2804                 err = rdev_add_key(rdev, dev, key.idx,
2805                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2806                                     mac_addr, &key.p);
2807         wdev_unlock(dev->ieee80211_ptr);
2808
2809         return err;
2810 }
2811
2812 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2813 {
2814         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2815         int err;
2816         struct net_device *dev = info->user_ptr[1];
2817         u8 *mac_addr = NULL;
2818         struct key_parse key;
2819
2820         err = nl80211_parse_key(info, &key);
2821         if (err)
2822                 return err;
2823
2824         if (info->attrs[NL80211_ATTR_MAC])
2825                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2826
2827         if (key.type == -1) {
2828                 if (mac_addr)
2829                         key.type = NL80211_KEYTYPE_PAIRWISE;
2830                 else
2831                         key.type = NL80211_KEYTYPE_GROUP;
2832         }
2833
2834         /* for now */
2835         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2836             key.type != NL80211_KEYTYPE_GROUP)
2837                 return -EINVAL;
2838
2839         if (!rdev->ops->del_key)
2840                 return -EOPNOTSUPP;
2841
2842         wdev_lock(dev->ieee80211_ptr);
2843         err = nl80211_key_allowed(dev->ieee80211_ptr);
2844
2845         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2846             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2847                 err = -ENOENT;
2848
2849         if (!err)
2850                 err = rdev_del_key(rdev, dev, key.idx,
2851                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2852                                    mac_addr);
2853
2854 #ifdef CONFIG_CFG80211_WEXT
2855         if (!err) {
2856                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2857                         dev->ieee80211_ptr->wext.default_key = -1;
2858                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2859                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2860         }
2861 #endif
2862         wdev_unlock(dev->ieee80211_ptr);
2863
2864         return err;
2865 }
2866
2867 /* This function returns an error or the number of nested attributes */
2868 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2869 {
2870         struct nlattr *attr;
2871         int n_entries = 0, tmp;
2872
2873         nla_for_each_nested(attr, nl_attr, tmp) {
2874                 if (nla_len(attr) != ETH_ALEN)
2875                         return -EINVAL;
2876
2877                 n_entries++;
2878         }
2879
2880         return n_entries;
2881 }
2882
2883 /*
2884  * This function parses ACL information and allocates memory for ACL data.
2885  * On successful return, the calling function is responsible to free the
2886  * ACL buffer returned by this function.
2887  */
2888 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2889                                                 struct genl_info *info)
2890 {
2891         enum nl80211_acl_policy acl_policy;
2892         struct nlattr *attr;
2893         struct cfg80211_acl_data *acl;
2894         int i = 0, n_entries, tmp;
2895
2896         if (!wiphy->max_acl_mac_addrs)
2897                 return ERR_PTR(-EOPNOTSUPP);
2898
2899         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2900                 return ERR_PTR(-EINVAL);
2901
2902         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2903         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2904             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2905                 return ERR_PTR(-EINVAL);
2906
2907         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2908                 return ERR_PTR(-EINVAL);
2909
2910         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2911         if (n_entries < 0)
2912                 return ERR_PTR(n_entries);
2913
2914         if (n_entries > wiphy->max_acl_mac_addrs)
2915                 return ERR_PTR(-ENOTSUPP);
2916
2917         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2918                       GFP_KERNEL);
2919         if (!acl)
2920                 return ERR_PTR(-ENOMEM);
2921
2922         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2923                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2924                 i++;
2925         }
2926
2927         acl->n_acl_entries = n_entries;
2928         acl->acl_policy = acl_policy;
2929
2930         return acl;
2931 }
2932
2933 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2934 {
2935         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2936         struct net_device *dev = info->user_ptr[1];
2937         struct cfg80211_acl_data *acl;
2938         int err;
2939
2940         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2941             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2942                 return -EOPNOTSUPP;
2943
2944         if (!dev->ieee80211_ptr->beacon_interval)
2945                 return -EINVAL;
2946
2947         acl = parse_acl_data(&rdev->wiphy, info);
2948         if (IS_ERR(acl))
2949                 return PTR_ERR(acl);
2950
2951         err = rdev_set_mac_acl(rdev, dev, acl);
2952
2953         kfree(acl);
2954
2955         return err;
2956 }
2957
2958 static int nl80211_parse_beacon(struct nlattr *attrs[],
2959                                 struct cfg80211_beacon_data *bcn)
2960 {
2961         bool haveinfo = false;
2962
2963         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2964             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2965             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2966             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2967                 return -EINVAL;
2968
2969         memset(bcn, 0, sizeof(*bcn));
2970
2971         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2972                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2973                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2974                 if (!bcn->head_len)
2975                         return -EINVAL;
2976                 haveinfo = true;
2977         }
2978
2979         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2980                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2981                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2982                 haveinfo = true;
2983         }
2984
2985         if (!haveinfo)
2986                 return -EINVAL;
2987
2988         if (attrs[NL80211_ATTR_IE]) {
2989                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
2990                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
2991         }
2992
2993         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
2994                 bcn->proberesp_ies =
2995                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2996                 bcn->proberesp_ies_len =
2997                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
2998         }
2999
3000         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3001                 bcn->assocresp_ies =
3002                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3003                 bcn->assocresp_ies_len =
3004                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3005         }
3006
3007         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3008                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3009                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3010         }
3011
3012         return 0;
3013 }
3014
3015 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3016                                    struct cfg80211_ap_settings *params)
3017 {
3018         struct wireless_dev *wdev;
3019         bool ret = false;
3020
3021         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3022                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3023                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3024                         continue;
3025
3026                 if (!wdev->preset_chandef.chan)
3027                         continue;
3028
3029                 params->chandef = wdev->preset_chandef;
3030                 ret = true;
3031                 break;
3032         }
3033
3034         return ret;
3035 }
3036
3037 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3038                                     enum nl80211_auth_type auth_type,
3039                                     enum nl80211_commands cmd)
3040 {
3041         if (auth_type > NL80211_AUTHTYPE_MAX)
3042                 return false;
3043
3044         switch (cmd) {
3045         case NL80211_CMD_AUTHENTICATE:
3046                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3047                     auth_type == NL80211_AUTHTYPE_SAE)
3048                         return false;
3049                 return true;
3050         case NL80211_CMD_CONNECT:
3051         case NL80211_CMD_START_AP:
3052                 /* SAE not supported yet */
3053                 if (auth_type == NL80211_AUTHTYPE_SAE)
3054                         return false;
3055                 return true;
3056         default:
3057                 return false;
3058         }
3059 }
3060
3061 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3062 {
3063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3064         struct net_device *dev = info->user_ptr[1];
3065         struct wireless_dev *wdev = dev->ieee80211_ptr;
3066         struct cfg80211_ap_settings params;
3067         int err;
3068         u8 radar_detect_width = 0;
3069
3070         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3071             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3072                 return -EOPNOTSUPP;
3073
3074         if (!rdev->ops->start_ap)
3075                 return -EOPNOTSUPP;
3076
3077         if (wdev->beacon_interval)
3078                 return -EALREADY;
3079
3080         memset(&params, 0, sizeof(params));
3081
3082         /* these are required for START_AP */
3083         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3084             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3085             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3086                 return -EINVAL;
3087
3088         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3089         if (err)
3090                 return err;
3091
3092         params.beacon_interval =
3093                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3094         params.dtim_period =
3095                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3096
3097         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3098         if (err)
3099                 return err;
3100
3101         /*
3102          * In theory, some of these attributes should be required here
3103          * but since they were not used when the command was originally
3104          * added, keep them optional for old user space programs to let
3105          * them continue to work with drivers that do not need the
3106          * additional information -- drivers must check!
3107          */
3108         if (info->attrs[NL80211_ATTR_SSID]) {
3109                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3110                 params.ssid_len =
3111                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3112                 if (params.ssid_len == 0 ||
3113                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3114                         return -EINVAL;
3115         }
3116
3117         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3118                 params.hidden_ssid = nla_get_u32(
3119                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3120                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3121                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3122                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3123                         return -EINVAL;
3124         }
3125
3126         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3127
3128         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3129                 params.auth_type = nla_get_u32(
3130                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3131                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3132                                              NL80211_CMD_START_AP))
3133                         return -EINVAL;
3134         } else
3135                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3136
3137         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3138                                       NL80211_MAX_NR_CIPHER_SUITES);
3139         if (err)
3140                 return err;
3141
3142         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3143                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3144                         return -EOPNOTSUPP;
3145                 params.inactivity_timeout = nla_get_u16(
3146                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3147         }
3148
3149         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3150                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3151                         return -EINVAL;
3152                 params.p2p_ctwindow =
3153                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3154                 if (params.p2p_ctwindow > 127)
3155                         return -EINVAL;
3156                 if (params.p2p_ctwindow != 0 &&
3157                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3158                         return -EINVAL;
3159         }
3160
3161         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3162                 u8 tmp;
3163
3164                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3165                         return -EINVAL;
3166                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3167                 if (tmp > 1)
3168                         return -EINVAL;
3169                 params.p2p_opp_ps = tmp;
3170                 if (params.p2p_opp_ps != 0 &&
3171                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3172                         return -EINVAL;
3173         }
3174
3175         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3176                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3177                 if (err)
3178                         return err;
3179         } else if (wdev->preset_chandef.chan) {
3180                 params.chandef = wdev->preset_chandef;
3181         } else if (!nl80211_get_ap_channel(rdev, &params))
3182                 return -EINVAL;
3183
3184         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3185                 return -EINVAL;
3186
3187         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3188         if (err < 0)
3189                 return err;
3190         if (err) {
3191                 radar_detect_width = BIT(params.chandef.width);
3192                 params.radar_required = true;
3193         }
3194
3195         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3196                                            params.chandef.chan,
3197                                            CHAN_MODE_SHARED,
3198                                            radar_detect_width);
3199         if (err)
3200                 return err;
3201
3202         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3203                 params.acl = parse_acl_data(&rdev->wiphy, info);
3204                 if (IS_ERR(params.acl))
3205                         return PTR_ERR(params.acl);
3206         }
3207
3208         err = rdev_start_ap(rdev, dev, &params);
3209         if (!err) {
3210                 wdev->preset_chandef = params.chandef;
3211                 wdev->beacon_interval = params.beacon_interval;
3212                 wdev->channel = params.chandef.chan;
3213                 wdev->ssid_len = params.ssid_len;
3214                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3215         }
3216
3217         kfree(params.acl);
3218
3219         return err;
3220 }
3221
3222 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3223 {
3224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3225         struct net_device *dev = info->user_ptr[1];
3226         struct wireless_dev *wdev = dev->ieee80211_ptr;
3227         struct cfg80211_beacon_data params;
3228         int err;
3229
3230         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3231             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3232                 return -EOPNOTSUPP;
3233
3234         if (!rdev->ops->change_beacon)
3235                 return -EOPNOTSUPP;
3236
3237         if (!wdev->beacon_interval)
3238                 return -EINVAL;
3239
3240         err = nl80211_parse_beacon(info->attrs, &params);
3241         if (err)
3242                 return err;
3243
3244         return rdev_change_beacon(rdev, dev, &params);
3245 }
3246
3247 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3248 {
3249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3250         struct net_device *dev = info->user_ptr[1];
3251
3252         return cfg80211_stop_ap(rdev, dev);
3253 }
3254
3255 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3256         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3257         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3258         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3259         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3260         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3261         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3262 };
3263
3264 static int parse_station_flags(struct genl_info *info,
3265                                enum nl80211_iftype iftype,
3266                                struct station_parameters *params)
3267 {
3268         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3269         struct nlattr *nla;
3270         int flag;
3271
3272         /*
3273          * Try parsing the new attribute first so userspace
3274          * can specify both for older kernels.
3275          */
3276         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3277         if (nla) {
3278                 struct nl80211_sta_flag_update *sta_flags;
3279
3280                 sta_flags = nla_data(nla);
3281                 params->sta_flags_mask = sta_flags->mask;
3282                 params->sta_flags_set = sta_flags->set;
3283                 params->sta_flags_set &= params->sta_flags_mask;
3284                 if ((params->sta_flags_mask |
3285                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3286                         return -EINVAL;
3287                 return 0;
3288         }
3289
3290         /* if present, parse the old attribute */
3291
3292         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3293         if (!nla)
3294                 return 0;
3295
3296         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3297                              nla, sta_flags_policy))
3298                 return -EINVAL;
3299
3300         /*
3301          * Only allow certain flags for interface types so that
3302          * other attributes are silently ignored. Remember that
3303          * this is backward compatibility code with old userspace
3304          * and shouldn't be hit in other cases anyway.
3305          */
3306         switch (iftype) {
3307         case NL80211_IFTYPE_AP:
3308         case NL80211_IFTYPE_AP_VLAN:
3309         case NL80211_IFTYPE_P2P_GO:
3310                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3311                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3312                                          BIT(NL80211_STA_FLAG_WME) |
3313                                          BIT(NL80211_STA_FLAG_MFP);
3314                 break;
3315         case NL80211_IFTYPE_P2P_CLIENT:
3316         case NL80211_IFTYPE_STATION:
3317                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3318                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3319                 break;
3320         case NL80211_IFTYPE_MESH_POINT:
3321                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3322                                          BIT(NL80211_STA_FLAG_MFP) |
3323                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3324         default:
3325                 return -EINVAL;
3326         }
3327
3328         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3329                 if (flags[flag]) {
3330                         params->sta_flags_set |= (1<<flag);
3331
3332                         /* no longer support new API additions in old API */
3333                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3334                                 return -EINVAL;
3335                 }
3336         }
3337
3338         return 0;
3339 }
3340
3341 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3342                                  int attr)
3343 {
3344         struct nlattr *rate;
3345         u32 bitrate;
3346         u16 bitrate_compat;
3347
3348         rate = nla_nest_start(msg, attr);
3349         if (!rate)
3350                 return false;
3351
3352         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3353         bitrate = cfg80211_calculate_bitrate(info);
3354         /* report 16-bit bitrate only if we can */
3355         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3356         if (bitrate > 0 &&
3357             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3358                 return false;
3359         if (bitrate_compat > 0 &&
3360             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3361                 return false;
3362
3363         if (info->flags & RATE_INFO_FLAGS_MCS) {
3364                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3365                         return false;
3366                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3367                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3368                         return false;
3369                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3370                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3371                         return false;
3372         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3373                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3374                         return false;
3375                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3376                         return false;
3377                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3378                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3379                         return false;
3380                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3381                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3382                         return false;
3383                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3384                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3385                         return false;
3386                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3387                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3388                         return false;
3389                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3390                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3391                         return false;
3392         }
3393
3394         nla_nest_end(msg, rate);
3395         return true;
3396 }
3397
3398 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3399                                int id)
3400 {
3401         void *attr;
3402         int i = 0;
3403
3404         if (!mask)
3405                 return true;
3406
3407         attr = nla_nest_start(msg, id);
3408         if (!attr)
3409                 return false;
3410
3411         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3412                 if (!(mask & BIT(i)))
3413                         continue;
3414
3415                 if (nla_put_u8(msg, i, signal[i]))
3416                         return false;
3417         }
3418
3419         nla_nest_end(msg, attr);
3420
3421         return true;
3422 }
3423
3424 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3425                                 int flags,
3426                                 struct cfg80211_registered_device *rdev,
3427                                 struct net_device *dev,
3428                                 const u8 *mac_addr, struct station_info *sinfo)
3429 {
3430         void *hdr;
3431         struct nlattr *sinfoattr, *bss_param;
3432
3433         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3434         if (!hdr)
3435                 return -1;
3436
3437         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3438             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3439             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3440                 goto nla_put_failure;
3441
3442         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3443         if (!sinfoattr)
3444                 goto nla_put_failure;
3445         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3446             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3447                         sinfo->connected_time))
3448                 goto nla_put_failure;
3449         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3450             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3451                         sinfo->inactive_time))
3452                 goto nla_put_failure;
3453         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3454                               STATION_INFO_RX_BYTES64)) &&
3455             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3456                         (u32)sinfo->rx_bytes))
3457                 goto nla_put_failure;
3458         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3459                               STATION_INFO_TX_BYTES64)) &&
3460             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3461                         (u32)sinfo->tx_bytes))
3462                 goto nla_put_failure;
3463         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3464             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3465                         sinfo->rx_bytes))
3466                 goto nla_put_failure;
3467         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3468             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3469                         sinfo->tx_bytes))
3470                 goto nla_put_failure;
3471         if ((sinfo->filled & STATION_INFO_LLID) &&
3472             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3473                 goto nla_put_failure;
3474         if ((sinfo->filled & STATION_INFO_PLID) &&
3475             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3476                 goto nla_put_failure;
3477         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3478             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3479                        sinfo->plink_state))
3480                 goto nla_put_failure;
3481         switch (rdev->wiphy.signal_type) {
3482         case CFG80211_SIGNAL_TYPE_MBM:
3483                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3484                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3485                                sinfo->signal))
3486                         goto nla_put_failure;
3487                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3488                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3489                                sinfo->signal_avg))
3490                         goto nla_put_failure;
3491                 break;
3492         default:
3493                 break;
3494         }
3495         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3496                 if (!nl80211_put_signal(msg, sinfo->chains,
3497                                         sinfo->chain_signal,
3498                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3499                         goto nla_put_failure;
3500         }
3501         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3502                 if (!nl80211_put_signal(msg, sinfo->chains,
3503                                         sinfo->chain_signal_avg,
3504                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3505                         goto nla_put_failure;
3506         }
3507         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3508                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3509                                           NL80211_STA_INFO_TX_BITRATE))
3510                         goto nla_put_failure;
3511         }
3512         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3513                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3514                                           NL80211_STA_INFO_RX_BITRATE))
3515                         goto nla_put_failure;
3516         }
3517         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3518             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3519                         sinfo->rx_packets))
3520                 goto nla_put_failure;
3521         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3522             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3523                         sinfo->tx_packets))
3524                 goto nla_put_failure;
3525         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3526             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3527                         sinfo->tx_retries))
3528                 goto nla_put_failure;
3529         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3530             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3531                         sinfo->tx_failed))
3532                 goto nla_put_failure;
3533         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3534             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3535                         sinfo->beacon_loss_count))
3536                 goto nla_put_failure;
3537         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3538             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3539                         sinfo->local_pm))
3540                 goto nla_put_failure;
3541         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3542             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3543                         sinfo->peer_pm))
3544                 goto nla_put_failure;
3545         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3546             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3547                         sinfo->nonpeer_pm))
3548                 goto nla_put_failure;
3549         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3550                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3551                 if (!bss_param)
3552                         goto nla_put_failure;
3553
3554                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3555                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3556                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3557                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3558                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3559                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3560                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3561                                sinfo->bss_param.dtim_period) ||
3562                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3563                                 sinfo->bss_param.beacon_interval))
3564                         goto nla_put_failure;
3565
3566                 nla_nest_end(msg, bss_param);
3567         }
3568         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3569             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3570                     sizeof(struct nl80211_sta_flag_update),
3571                     &sinfo->sta_flags))
3572                 goto nla_put_failure;
3573         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3574                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3575                             sinfo->t_offset))
3576                 goto nla_put_failure;
3577         nla_nest_end(msg, sinfoattr);
3578
3579         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3580             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3581                     sinfo->assoc_req_ies))
3582                 goto nla_put_failure;
3583
3584         return genlmsg_end(msg, hdr);
3585
3586  nla_put_failure:
3587         genlmsg_cancel(msg, hdr);
3588         return -EMSGSIZE;
3589 }
3590
3591 static int nl80211_dump_station(struct sk_buff *skb,
3592                                 struct netlink_callback *cb)
3593 {
3594         struct station_info sinfo;
3595         struct cfg80211_registered_device *dev;
3596         struct wireless_dev *wdev;
3597         u8 mac_addr[ETH_ALEN];
3598         int sta_idx = cb->args[2];
3599         int err;
3600
3601         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3602         if (err)
3603                 return err;
3604
3605         if (!wdev->netdev) {
3606                 err = -EINVAL;
3607                 goto out_err;
3608         }
3609
3610         if (!dev->ops->dump_station) {
3611                 err = -EOPNOTSUPP;
3612                 goto out_err;
3613         }
3614
3615         while (1) {
3616                 memset(&sinfo, 0, sizeof(sinfo));
3617                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3618                                         mac_addr, &sinfo);
3619                 if (err == -ENOENT)
3620                         break;
3621                 if (err)
3622                         goto out_err;
3623
3624                 if (nl80211_send_station(skb,
3625                                 NETLINK_CB(cb->skb).portid,
3626                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3627                                 dev, wdev->netdev, mac_addr,
3628                                 &sinfo) < 0)
3629                         goto out;
3630
3631                 sta_idx++;
3632         }
3633
3634
3635  out:
3636         cb->args[2] = sta_idx;
3637         err = skb->len;
3638  out_err:
3639         nl80211_finish_wdev_dump(dev);
3640
3641         return err;
3642 }
3643
3644 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3645 {
3646         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3647         struct net_device *dev = info->user_ptr[1];
3648         struct station_info sinfo;
3649         struct sk_buff *msg;
3650         u8 *mac_addr = NULL;
3651         int err;
3652
3653         memset(&sinfo, 0, sizeof(sinfo));
3654
3655         if (!info->attrs[NL80211_ATTR_MAC])
3656                 return -EINVAL;
3657
3658         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3659
3660         if (!rdev->ops->get_station)
3661                 return -EOPNOTSUPP;
3662
3663         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3664         if (err)
3665                 return err;
3666
3667         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3668         if (!msg)
3669                 return -ENOMEM;
3670
3671         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3672                                  rdev, dev, mac_addr, &sinfo) < 0) {
3673                 nlmsg_free(msg);
3674                 return -ENOBUFS;
3675         }
3676
3677         return genlmsg_reply(msg, info);
3678 }
3679
3680 int cfg80211_check_station_change(struct wiphy *wiphy,
3681                                   struct station_parameters *params,
3682                                   enum cfg80211_station_type statype)
3683 {
3684         if (params->listen_interval != -1)
3685                 return -EINVAL;
3686         if (params->aid)
3687                 return -EINVAL;
3688
3689         /* When you run into this, adjust the code below for the new flag */
3690         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3691
3692         switch (statype) {
3693         case CFG80211_STA_MESH_PEER_KERNEL:
3694         case CFG80211_STA_MESH_PEER_USER:
3695                 /*
3696                  * No ignoring the TDLS flag here -- the userspace mesh
3697                  * code doesn't have the bug of including TDLS in the
3698                  * mask everywhere.
3699                  */
3700                 if (params->sta_flags_mask &
3701                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3702                                   BIT(NL80211_STA_FLAG_MFP) |
3703                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3704                         return -EINVAL;
3705                 break;
3706         case CFG80211_STA_TDLS_PEER_SETUP:
3707         case CFG80211_STA_TDLS_PEER_ACTIVE:
3708                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3709                         return -EINVAL;
3710                 /* ignore since it can't change */
3711                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3712                 break;
3713         default:
3714                 /* disallow mesh-specific things */
3715                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3716                         return -EINVAL;
3717                 if (params->local_pm)
3718                         return -EINVAL;
3719                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3720                         return -EINVAL;
3721         }
3722
3723         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3724             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3725                 /* TDLS can't be set, ... */
3726                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3727                         return -EINVAL;
3728                 /*
3729                  * ... but don't bother the driver with it. This works around
3730                  * a hostapd/wpa_supplicant issue -- it always includes the
3731                  * TLDS_PEER flag in the mask even for AP mode.
3732                  */
3733                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3734         }
3735
3736         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3737                 /* reject other things that can't change */
3738                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3739                         return -EINVAL;
3740                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3741                         return -EINVAL;
3742                 if (params->supported_rates)
3743                         return -EINVAL;
3744                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3745                         return -EINVAL;
3746         }
3747
3748         if (statype != CFG80211_STA_AP_CLIENT) {
3749                 if (params->vlan)
3750                         return -EINVAL;
3751         }
3752
3753         switch (statype) {
3754         case CFG80211_STA_AP_MLME_CLIENT:
3755                 /* Use this only for authorizing/unauthorizing a station */
3756                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3757                         return -EOPNOTSUPP;
3758                 break;
3759         case CFG80211_STA_AP_CLIENT:
3760                 /* accept only the listed bits */
3761                 if (params->sta_flags_mask &
3762                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3763                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3764                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3765                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3766                                   BIT(NL80211_STA_FLAG_WME) |
3767                                   BIT(NL80211_STA_FLAG_MFP)))
3768                         return -EINVAL;
3769
3770                 /* but authenticated/associated only if driver handles it */
3771                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3772                     params->sta_flags_mask &
3773                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3774                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3775                         return -EINVAL;
3776                 break;
3777         case CFG80211_STA_IBSS:
3778         case CFG80211_STA_AP_STA:
3779                 /* reject any changes other than AUTHORIZED */
3780                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3781                         return -EINVAL;
3782                 break;
3783         case CFG80211_STA_TDLS_PEER_SETUP:
3784                 /* reject any changes other than AUTHORIZED or WME */
3785                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3786                                                BIT(NL80211_STA_FLAG_WME)))
3787                         return -EINVAL;
3788                 /* force (at least) rates when authorizing */
3789                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3790                     !params->supported_rates)
3791                         return -EINVAL;
3792                 break;
3793         case CFG80211_STA_TDLS_PEER_ACTIVE:
3794                 /* reject any changes */
3795                 return -EINVAL;
3796         case CFG80211_STA_MESH_PEER_KERNEL:
3797                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3798                         return -EINVAL;
3799                 break;
3800         case CFG80211_STA_MESH_PEER_USER:
3801                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3802                         return -EINVAL;
3803                 break;
3804         }
3805
3806         return 0;
3807 }
3808 EXPORT_SYMBOL(cfg80211_check_station_change);
3809
3810 /*
3811  * Get vlan interface making sure it is running and on the right wiphy.
3812  */
3813 static struct net_device *get_vlan(struct genl_info *info,
3814                                    struct cfg80211_registered_device *rdev)
3815 {
3816         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3817         struct net_device *v;
3818         int ret;
3819
3820         if (!vlanattr)
3821                 return NULL;
3822
3823         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3824         if (!v)
3825                 return ERR_PTR(-ENODEV);
3826
3827         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3828                 ret = -EINVAL;
3829                 goto error;
3830         }
3831
3832         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3833             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3834             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3835                 ret = -EINVAL;
3836                 goto error;
3837         }
3838
3839         if (!netif_running(v)) {
3840                 ret = -ENETDOWN;
3841                 goto error;
3842         }
3843
3844         return v;
3845  error:
3846         dev_put(v);
3847         return ERR_PTR(ret);
3848 }
3849
3850 static struct nla_policy
3851 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3852         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3853         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3854 };
3855
3856 static int nl80211_parse_sta_wme(struct genl_info *info,
3857                                  struct station_parameters *params)
3858 {
3859         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3860         struct nlattr *nla;
3861         int err;
3862
3863         /* parse WME attributes if present */
3864         if (!info->attrs[NL80211_ATTR_STA_WME])
3865                 return 0;
3866
3867         nla = info->attrs[NL80211_ATTR_STA_WME];
3868         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3869                                nl80211_sta_wme_policy);
3870         if (err)
3871                 return err;
3872
3873         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3874                 params->uapsd_queues = nla_get_u8(
3875                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3876         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3877                 return -EINVAL;
3878
3879         if (tb[NL80211_STA_WME_MAX_SP])
3880                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3881
3882         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3883                 return -EINVAL;
3884
3885         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3886
3887         return 0;
3888 }
3889
3890 static int nl80211_set_station_tdls(struct genl_info *info,
3891                                     struct station_parameters *params)
3892 {
3893         /* Dummy STA entry gets updated once the peer capabilities are known */
3894         if (info->attrs[NL80211_ATTR_PEER_AID])
3895                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3896         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3897                 params->ht_capa =
3898                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3899         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3900                 params->vht_capa =
3901                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3902
3903         return nl80211_parse_sta_wme(info, params);
3904 }
3905
3906 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3907 {
3908         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3909         struct net_device *dev = info->user_ptr[1];
3910         struct station_parameters params;
3911         u8 *mac_addr;
3912         int err;
3913
3914         memset(&params, 0, sizeof(params));
3915
3916         params.listen_interval = -1;
3917
3918         if (!rdev->ops->change_station)
3919                 return -EOPNOTSUPP;
3920
3921         if (info->attrs[NL80211_ATTR_STA_AID])
3922                 return -EINVAL;
3923
3924         if (!info->attrs[NL80211_ATTR_MAC])
3925                 return -EINVAL;
3926
3927         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3928
3929         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3930                 params.supported_rates =
3931                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3932                 params.supported_rates_len =
3933                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3934         }
3935
3936         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3937                 params.capability =
3938                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3939                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3940         }
3941
3942         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3943                 params.ext_capab =
3944                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3945                 params.ext_capab_len =
3946                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3947         }
3948
3949         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3950                 return -EINVAL;
3951
3952         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3953                 return -EINVAL;
3954
3955         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3956                 params.plink_action =
3957                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3958                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3959                         return -EINVAL;
3960         }
3961
3962         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3963                 params.plink_state =
3964                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3965                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3966                         return -EINVAL;
3967                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3968         }
3969
3970         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3971                 enum nl80211_mesh_power_mode pm = nla_get_u32(
3972                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3973
3974                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3975                     pm > NL80211_MESH_POWER_MAX)
3976                         return -EINVAL;
3977
3978                 params.local_pm = pm;
3979         }
3980
3981         /* Include parameters for TDLS peer (will check later) */
3982         err = nl80211_set_station_tdls(info, &params);
3983         if (err)
3984                 return err;
3985
3986         params.vlan = get_vlan(info, rdev);
3987         if (IS_ERR(params.vlan))
3988                 return PTR_ERR(params.vlan);
3989
3990         switch (dev->ieee80211_ptr->iftype) {
3991         case NL80211_IFTYPE_AP:
3992         case NL80211_IFTYPE_AP_VLAN:
3993         case NL80211_IFTYPE_P2P_GO:
3994         case NL80211_IFTYPE_P2P_CLIENT:
3995         case NL80211_IFTYPE_STATION:
3996         case NL80211_IFTYPE_ADHOC:
3997         case NL80211_IFTYPE_MESH_POINT:
3998                 break;
3999         default:
4000                 err = -EOPNOTSUPP;
4001                 goto out_put_vlan;
4002         }
4003
4004         /* driver will call cfg80211_check_station_change() */
4005         err = rdev_change_station(rdev, dev, mac_addr, &params);
4006
4007  out_put_vlan:
4008         if (params.vlan)
4009                 dev_put(params.vlan);
4010
4011         return err;
4012 }
4013
4014 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4015 {
4016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4017         int err;
4018         struct net_device *dev = info->user_ptr[1];
4019         struct station_parameters params;
4020         u8 *mac_addr = NULL;
4021
4022         memset(&params, 0, sizeof(params));
4023
4024         if (!rdev->ops->add_station)
4025                 return -EOPNOTSUPP;
4026
4027         if (!info->attrs[NL80211_ATTR_MAC])
4028                 return -EINVAL;
4029
4030         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4031                 return -EINVAL;
4032
4033         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4034                 return -EINVAL;
4035
4036         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4037             !info->attrs[NL80211_ATTR_PEER_AID])
4038                 return -EINVAL;
4039
4040         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4041         params.supported_rates =
4042                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4043         params.supported_rates_len =
4044                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4045         params.listen_interval =
4046                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4047
4048         if (info->attrs[NL80211_ATTR_PEER_AID])
4049                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4050         else
4051                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4052         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4053                 return -EINVAL;
4054
4055         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4056                 params.capability =
4057                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4058                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4059         }
4060
4061         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4062                 params.ext_capab =
4063                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4064                 params.ext_capab_len =
4065                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4066         }
4067
4068         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4069                 params.ht_capa =
4070                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4071
4072         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4073                 params.vht_capa =
4074                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4075
4076         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4077                 params.plink_action =
4078                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4079                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4080                         return -EINVAL;
4081         }
4082
4083         err = nl80211_parse_sta_wme(info, &params);
4084         if (err)
4085                 return err;
4086
4087         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4088                 return -EINVAL;
4089
4090         /* When you run into this, adjust the code below for the new flag */
4091         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4092
4093         switch (dev->ieee80211_ptr->iftype) {
4094         case NL80211_IFTYPE_AP:
4095         case NL80211_IFTYPE_AP_VLAN:
4096         case NL80211_IFTYPE_P2P_GO:
4097                 /* ignore WME attributes if iface/sta is not capable */
4098                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4099                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4100                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4101
4102                 /* TDLS peers cannot be added */
4103                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4104                     info->attrs[NL80211_ATTR_PEER_AID])
4105                         return -EINVAL;
4106                 /* but don't bother the driver with it */
4107                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4108
4109                 /* allow authenticated/associated only if driver handles it */
4110                 if (!(rdev->wiphy.features &
4111                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4112                     params.sta_flags_mask &
4113                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4114                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4115                         return -EINVAL;
4116
4117                 /* must be last in here for error handling */
4118                 params.vlan = get_vlan(info, rdev);
4119                 if (IS_ERR(params.vlan))
4120                         return PTR_ERR(params.vlan);
4121                 break;
4122         case NL80211_IFTYPE_MESH_POINT:
4123                 /* ignore uAPSD data */
4124                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4125
4126                 /* associated is disallowed */
4127                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4128                         return -EINVAL;
4129                 /* TDLS peers cannot be added */
4130                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4131                     info->attrs[NL80211_ATTR_PEER_AID])
4132                         return -EINVAL;
4133                 break;
4134         case NL80211_IFTYPE_STATION:
4135         case NL80211_IFTYPE_P2P_CLIENT:
4136                 /* ignore uAPSD data */
4137                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4138
4139                 /* these are disallowed */
4140                 if (params.sta_flags_mask &
4141                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4142                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4143                         return -EINVAL;
4144                 /* Only TDLS peers can be added */
4145                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4146                         return -EINVAL;
4147                 /* Can only add if TDLS ... */
4148                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4149                         return -EOPNOTSUPP;
4150                 /* ... with external setup is supported */
4151                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4152                         return -EOPNOTSUPP;
4153                 /*
4154                  * Older wpa_supplicant versions always mark the TDLS peer
4155                  * as authorized, but it shouldn't yet be.
4156                  */
4157                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4158                 break;
4159         default:
4160                 return -EOPNOTSUPP;
4161         }
4162
4163         /* be aware of params.vlan when changing code here */
4164
4165         err = rdev_add_station(rdev, dev, mac_addr, &params);
4166
4167         if (params.vlan)
4168                 dev_put(params.vlan);
4169         return err;
4170 }
4171
4172 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4173 {
4174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4175         struct net_device *dev = info->user_ptr[1];
4176         u8 *mac_addr = NULL;
4177
4178         if (info->attrs[NL80211_ATTR_MAC])
4179                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4180
4181         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4182             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4183             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4184             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4185                 return -EINVAL;
4186
4187         if (!rdev->ops->del_station)
4188                 return -EOPNOTSUPP;
4189
4190         return rdev_del_station(rdev, dev, mac_addr);
4191 }
4192
4193 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4194                                 int flags, struct net_device *dev,
4195                                 u8 *dst, u8 *next_hop,
4196                                 struct mpath_info *pinfo)
4197 {
4198         void *hdr;
4199         struct nlattr *pinfoattr;
4200
4201         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4202         if (!hdr)
4203                 return -1;
4204
4205         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4206             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4207             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4208             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4209                 goto nla_put_failure;
4210
4211         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4212         if (!pinfoattr)
4213                 goto nla_put_failure;
4214         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4215             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4216                         pinfo->frame_qlen))
4217                 goto nla_put_failure;
4218         if (((pinfo->filled & MPATH_INFO_SN) &&
4219              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4220             ((pinfo->filled & MPATH_INFO_METRIC) &&
4221              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4222                          pinfo->metric)) ||
4223             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4224              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4225                          pinfo->exptime)) ||
4226             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4227              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4228                         pinfo->flags)) ||
4229             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4230              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4231                          pinfo->discovery_timeout)) ||
4232             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4233              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4234                         pinfo->discovery_retries)))
4235                 goto nla_put_failure;
4236
4237         nla_nest_end(msg, pinfoattr);
4238
4239         return genlmsg_end(msg, hdr);
4240
4241  nla_put_failure:
4242         genlmsg_cancel(msg, hdr);
4243         return -EMSGSIZE;
4244 }
4245
4246 static int nl80211_dump_mpath(struct sk_buff *skb,
4247                               struct netlink_callback *cb)
4248 {
4249         struct mpath_info pinfo;
4250         struct cfg80211_registered_device *dev;
4251         struct wireless_dev *wdev;
4252         u8 dst[ETH_ALEN];
4253         u8 next_hop[ETH_ALEN];
4254         int path_idx = cb->args[2];
4255         int err;
4256
4257         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4258         if (err)
4259                 return err;
4260
4261         if (!dev->ops->dump_mpath) {
4262                 err = -EOPNOTSUPP;
4263                 goto out_err;
4264         }
4265
4266         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4267                 err = -EOPNOTSUPP;
4268                 goto out_err;
4269         }
4270
4271         while (1) {
4272                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4273                                       next_hop, &pinfo);
4274                 if (err == -ENOENT)
4275                         break;
4276                 if (err)
4277                         goto out_err;
4278
4279                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4280                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4281                                        wdev->netdev, dst, next_hop,
4282                                        &pinfo) < 0)
4283                         goto out;
4284
4285                 path_idx++;
4286         }
4287
4288
4289  out:
4290         cb->args[2] = path_idx;
4291         err = skb->len;
4292  out_err:
4293         nl80211_finish_wdev_dump(dev);
4294         return err;
4295 }
4296
4297 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4298 {
4299         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4300         int err;
4301         struct net_device *dev = info->user_ptr[1];
4302         struct mpath_info pinfo;
4303         struct sk_buff *msg;
4304         u8 *dst = NULL;
4305         u8 next_hop[ETH_ALEN];
4306
4307         memset(&pinfo, 0, sizeof(pinfo));
4308
4309         if (!info->attrs[NL80211_ATTR_MAC])
4310                 return -EINVAL;
4311
4312         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4313
4314         if (!rdev->ops->get_mpath)
4315                 return -EOPNOTSUPP;
4316
4317         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4318                 return -EOPNOTSUPP;
4319
4320         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4321         if (err)
4322                 return err;
4323
4324         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4325         if (!msg)
4326                 return -ENOMEM;
4327
4328         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4329                                  dev, dst, next_hop, &pinfo) < 0) {
4330                 nlmsg_free(msg);
4331                 return -ENOBUFS;
4332         }
4333
4334         return genlmsg_reply(msg, info);
4335 }
4336
4337 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4338 {
4339         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4340         struct net_device *dev = info->user_ptr[1];
4341         u8 *dst = NULL;
4342         u8 *next_hop = NULL;
4343
4344         if (!info->attrs[NL80211_ATTR_MAC])
4345                 return -EINVAL;
4346
4347         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4348                 return -EINVAL;
4349
4350         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4351         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4352
4353         if (!rdev->ops->change_mpath)
4354                 return -EOPNOTSUPP;
4355
4356         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4357                 return -EOPNOTSUPP;
4358
4359         return rdev_change_mpath(rdev, dev, dst, next_hop);
4360 }
4361
4362 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4363 {
4364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4365         struct net_device *dev = info->user_ptr[1];
4366         u8 *dst = NULL;
4367         u8 *next_hop = NULL;
4368
4369         if (!info->attrs[NL80211_ATTR_MAC])
4370                 return -EINVAL;
4371
4372         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4373                 return -EINVAL;
4374
4375         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4376         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4377
4378         if (!rdev->ops->add_mpath)
4379                 return -EOPNOTSUPP;
4380
4381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4382                 return -EOPNOTSUPP;
4383
4384         return rdev_add_mpath(rdev, dev, dst, next_hop);
4385 }
4386
4387 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4388 {
4389         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4390         struct net_device *dev = info->user_ptr[1];
4391         u8 *dst = NULL;
4392
4393         if (info->attrs[NL80211_ATTR_MAC])
4394                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4395
4396         if (!rdev->ops->del_mpath)
4397                 return -EOPNOTSUPP;
4398
4399         return rdev_del_mpath(rdev, dev, dst);
4400 }
4401
4402 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4403 {
4404         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4405         struct net_device *dev = info->user_ptr[1];
4406         struct bss_parameters params;
4407
4408         memset(&params, 0, sizeof(params));
4409         /* default to not changing parameters */
4410         params.use_cts_prot = -1;
4411         params.use_short_preamble = -1;
4412         params.use_short_slot_time = -1;
4413         params.ap_isolate = -1;
4414         params.ht_opmode = -1;
4415         params.p2p_ctwindow = -1;
4416         params.p2p_opp_ps = -1;
4417
4418         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4419                 params.use_cts_prot =
4420                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4421         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4422                 params.use_short_preamble =
4423                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4424         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4425                 params.use_short_slot_time =
4426                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4427         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4428                 params.basic_rates =
4429                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4430                 params.basic_rates_len =
4431                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4432         }
4433         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4434                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4435         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4436                 params.ht_opmode =
4437                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4438
4439         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4440                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4441                         return -EINVAL;
4442                 params.p2p_ctwindow =
4443                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4444                 if (params.p2p_ctwindow < 0)
4445                         return -EINVAL;
4446                 if (params.p2p_ctwindow != 0 &&
4447                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4448                         return -EINVAL;
4449         }
4450
4451         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4452                 u8 tmp;
4453
4454                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4455                         return -EINVAL;
4456                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4457                 if (tmp > 1)
4458                         return -EINVAL;
4459                 params.p2p_opp_ps = tmp;
4460                 if (params.p2p_opp_ps &&
4461                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4462                         return -EINVAL;
4463         }
4464
4465         if (!rdev->ops->change_bss)
4466                 return -EOPNOTSUPP;
4467
4468         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4469             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4470                 return -EOPNOTSUPP;
4471
4472         return rdev_change_bss(rdev, dev, &params);
4473 }
4474
4475 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4476         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4477         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4478         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4479         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4480         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4481         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4482 };
4483
4484 static int parse_reg_rule(struct nlattr *tb[],
4485         struct ieee80211_reg_rule *reg_rule)
4486 {
4487         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4488         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4489
4490         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4491                 return -EINVAL;
4492         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4493                 return -EINVAL;
4494         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4495                 return -EINVAL;
4496         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4497                 return -EINVAL;
4498         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4499                 return -EINVAL;
4500
4501         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4502
4503         freq_range->start_freq_khz =
4504                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4505         freq_range->end_freq_khz =
4506                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4507         freq_range->max_bandwidth_khz =
4508                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4509
4510         power_rule->max_eirp =
4511                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4512
4513         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4514                 power_rule->max_antenna_gain =
4515                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4516
4517         return 0;
4518 }
4519
4520 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4521 {
4522         int r;
4523         char *data = NULL;
4524         enum nl80211_user_reg_hint_type user_reg_hint_type;
4525
4526         /*
4527          * You should only get this when cfg80211 hasn't yet initialized
4528          * completely when built-in to the kernel right between the time
4529          * window between nl80211_init() and regulatory_init(), if that is
4530          * even possible.
4531          */
4532         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4533                 return -EINPROGRESS;
4534
4535         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4536                 return -EINVAL;
4537
4538         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4539
4540         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4541                 user_reg_hint_type =
4542                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4543         else
4544                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4545
4546         switch (user_reg_hint_type) {
4547         case NL80211_USER_REG_HINT_USER:
4548         case NL80211_USER_REG_HINT_CELL_BASE:
4549                 break;
4550         default:
4551                 return -EINVAL;
4552         }
4553
4554         r = regulatory_hint_user(data, user_reg_hint_type);
4555
4556         return r;
4557 }
4558
4559 static int nl80211_get_mesh_config(struct sk_buff *skb,
4560                                    struct genl_info *info)
4561 {
4562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4563         struct net_device *dev = info->user_ptr[1];
4564         struct wireless_dev *wdev = dev->ieee80211_ptr;
4565         struct mesh_config cur_params;
4566         int err = 0;
4567         void *hdr;
4568         struct nlattr *pinfoattr;
4569         struct sk_buff *msg;
4570
4571         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4572                 return -EOPNOTSUPP;
4573
4574         if (!rdev->ops->get_mesh_config)
4575                 return -EOPNOTSUPP;
4576
4577         wdev_lock(wdev);
4578         /* If not connected, get default parameters */
4579         if (!wdev->mesh_id_len)
4580                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4581         else
4582                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4583         wdev_unlock(wdev);
4584
4585         if (err)
4586                 return err;
4587
4588         /* Draw up a netlink message to send back */
4589         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4590         if (!msg)
4591                 return -ENOMEM;
4592         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4593                              NL80211_CMD_GET_MESH_CONFIG);
4594         if (!hdr)
4595                 goto out;
4596         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4597         if (!pinfoattr)
4598                 goto nla_put_failure;
4599         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4600             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4601                         cur_params.dot11MeshRetryTimeout) ||
4602             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4603                         cur_params.dot11MeshConfirmTimeout) ||
4604             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4605                         cur_params.dot11MeshHoldingTimeout) ||
4606             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4607                         cur_params.dot11MeshMaxPeerLinks) ||
4608             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4609                        cur_params.dot11MeshMaxRetries) ||
4610             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4611                        cur_params.dot11MeshTTL) ||
4612             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4613                        cur_params.element_ttl) ||
4614             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4615                        cur_params.auto_open_plinks) ||
4616             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4617                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4618             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4619                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4620             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4621                         cur_params.path_refresh_time) ||
4622             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4623                         cur_params.min_discovery_timeout) ||
4624             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4625                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4626             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4627                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4628             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4629                         cur_params.dot11MeshHWMPperrMinInterval) ||
4630             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4631                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4632             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4633                        cur_params.dot11MeshHWMPRootMode) ||
4634             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4635                         cur_params.dot11MeshHWMPRannInterval) ||
4636             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4637                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4638             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4639                        cur_params.dot11MeshForwarding) ||
4640             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4641                         cur_params.rssi_threshold) ||
4642             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4643                         cur_params.ht_opmode) ||
4644             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4645                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4646             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4647                         cur_params.dot11MeshHWMProotInterval) ||
4648             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4649                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4650             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4651                         cur_params.power_mode) ||
4652             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4653                         cur_params.dot11MeshAwakeWindowDuration) ||
4654             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4655                         cur_params.plink_timeout))
4656                 goto nla_put_failure;
4657         nla_nest_end(msg, pinfoattr);
4658         genlmsg_end(msg, hdr);
4659         return genlmsg_reply(msg, info);
4660
4661  nla_put_failure:
4662         genlmsg_cancel(msg, hdr);
4663  out:
4664         nlmsg_free(msg);
4665         return -ENOBUFS;
4666 }
4667
4668 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4669         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4670         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4671         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4672         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4673         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4674         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4675         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4676         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4677         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4678         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4679         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4680         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4681         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4682         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4683         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4684         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4685         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4686         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4687         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4688         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4689         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4690         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4691         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4692         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4693         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4694         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4695         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4696         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4697 };
4698
4699 static const struct nla_policy
4700         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4701         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4702         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4703         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4704         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4705         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4706         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4707         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4708                                     .len = IEEE80211_MAX_DATA_LEN },
4709         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4710 };
4711
4712 static int nl80211_parse_mesh_config(struct genl_info *info,
4713                                      struct mesh_config *cfg,
4714                                      u32 *mask_out)
4715 {
4716         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4717         u32 mask = 0;
4718
4719 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4720 do {                                                                        \
4721         if (tb[attr]) {                                                     \
4722                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4723                         return -EINVAL;                                     \
4724                 cfg->param = fn(tb[attr]);                                  \
4725                 mask |= (1 << (attr - 1));                                  \
4726         }                                                                   \
4727 } while (0)
4728
4729
4730         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4731                 return -EINVAL;
4732         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4733                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4734                              nl80211_meshconf_params_policy))
4735                 return -EINVAL;
4736
4737         /* This makes sure that there aren't more than 32 mesh config
4738          * parameters (otherwise our bitfield scheme would not work.) */
4739         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4740
4741         /* Fill in the params struct */
4742         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4743                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4744                                   nla_get_u16);
4745         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4746                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4747                                   nla_get_u16);
4748         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4749                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4750                                   nla_get_u16);
4751         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4752                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4753                                   nla_get_u16);
4754         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4755                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4756                                   nla_get_u8);
4757         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4758                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4759         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4760                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4761                                   nla_get_u8);
4762         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4763                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4764                                   nla_get_u8);
4765         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4766                                   1, 255, mask,
4767                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4768                                   nla_get_u32);
4769         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4770                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4771                                   nla_get_u8);
4772         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4773                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4774                                   nla_get_u32);
4775         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4776                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4777                                   nla_get_u16);
4778         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4779                                   1, 65535, mask,
4780                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4781                                   nla_get_u32);
4782         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4783                                   1, 65535, mask,
4784                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4785                                   nla_get_u16);
4786         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4787                                   1, 65535, mask,
4788                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4789                                   nla_get_u16);
4790         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4791                                   dot11MeshHWMPnetDiameterTraversalTime,
4792                                   1, 65535, mask,
4793                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4794                                   nla_get_u16);
4795         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4796                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4797                                   nla_get_u8);
4798         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4799                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4800                                   nla_get_u16);
4801         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4802                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4803                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4804                                   nla_get_u8);
4805         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4806                                   mask, NL80211_MESHCONF_FORWARDING,
4807                                   nla_get_u8);
4808         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4809                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4810                                   nla_get_s32);
4811         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4812                                   mask, NL80211_MESHCONF_HT_OPMODE,
4813                                   nla_get_u16);
4814         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4815                                   1, 65535, mask,
4816                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4817                                   nla_get_u32);
4818         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4819                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4820                                   nla_get_u16);
4821         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4822                                   dot11MeshHWMPconfirmationInterval,
4823                                   1, 65535, mask,
4824                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4825                                   nla_get_u16);
4826         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4827                                   NL80211_MESH_POWER_ACTIVE,
4828                                   NL80211_MESH_POWER_MAX,
4829                                   mask, NL80211_MESHCONF_POWER_MODE,
4830                                   nla_get_u32);
4831         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4832                                   0, 65535, mask,
4833                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4834         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4835                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4836                                   nla_get_u32);
4837         if (mask_out)
4838                 *mask_out = mask;
4839
4840         return 0;
4841
4842 #undef FILL_IN_MESH_PARAM_IF_SET
4843 }
4844
4845 static int nl80211_parse_mesh_setup(struct genl_info *info,
4846                                      struct mesh_setup *setup)
4847 {
4848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4849         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4850
4851         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4852                 return -EINVAL;
4853         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4854                              info->attrs[NL80211_ATTR_MESH_SETUP],
4855                              nl80211_mesh_setup_params_policy))
4856                 return -EINVAL;
4857
4858         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4859                 setup->sync_method =
4860                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4861                  IEEE80211_SYNC_METHOD_VENDOR :
4862                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4863
4864         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4865                 setup->path_sel_proto =
4866                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4867                  IEEE80211_PATH_PROTOCOL_VENDOR :
4868                  IEEE80211_PATH_PROTOCOL_HWMP;
4869
4870         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4871                 setup->path_metric =
4872                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4873                  IEEE80211_PATH_METRIC_VENDOR :
4874                  IEEE80211_PATH_METRIC_AIRTIME;
4875
4876
4877         if (tb[NL80211_MESH_SETUP_IE]) {
4878                 struct nlattr *ieattr =
4879                         tb[NL80211_MESH_SETUP_IE];
4880                 if (!is_valid_ie_attr(ieattr))
4881                         return -EINVAL;
4882                 setup->ie = nla_data(ieattr);
4883                 setup->ie_len = nla_len(ieattr);
4884         }
4885         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4886             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4887                 return -EINVAL;
4888         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4889         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4890         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4891         if (setup->is_secure)
4892                 setup->user_mpm = true;
4893
4894         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4895                 if (!setup->user_mpm)
4896                         return -EINVAL;
4897                 setup->auth_id =
4898                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4899         }
4900
4901         return 0;
4902 }
4903
4904 static int nl80211_update_mesh_config(struct sk_buff *skb,
4905                                       struct genl_info *info)
4906 {
4907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4908         struct net_device *dev = info->user_ptr[1];
4909         struct wireless_dev *wdev = dev->ieee80211_ptr;
4910         struct mesh_config cfg;
4911         u32 mask;
4912         int err;
4913
4914         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4915                 return -EOPNOTSUPP;
4916
4917         if (!rdev->ops->update_mesh_config)
4918                 return -EOPNOTSUPP;
4919
4920         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4921         if (err)
4922                 return err;
4923
4924         wdev_lock(wdev);
4925         if (!wdev->mesh_id_len)
4926                 err = -ENOLINK;
4927
4928         if (!err)
4929                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4930
4931         wdev_unlock(wdev);
4932
4933         return err;
4934 }
4935
4936 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4937 {
4938         const struct ieee80211_regdomain *regdom;
4939         struct sk_buff *msg;
4940         void *hdr = NULL;
4941         struct nlattr *nl_reg_rules;
4942         unsigned int i;
4943
4944         if (!cfg80211_regdomain)
4945                 return -EINVAL;
4946
4947         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4948         if (!msg)
4949                 return -ENOBUFS;
4950
4951         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4952                              NL80211_CMD_GET_REG);
4953         if (!hdr)
4954                 goto put_failure;
4955
4956         if (reg_last_request_cell_base() &&
4957             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4958                         NL80211_USER_REG_HINT_CELL_BASE))
4959                 goto nla_put_failure;
4960
4961         rcu_read_lock();
4962         regdom = rcu_dereference(cfg80211_regdomain);
4963
4964         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4965             (regdom->dfs_region &&
4966              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4967                 goto nla_put_failure_rcu;
4968
4969         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4970         if (!nl_reg_rules)
4971                 goto nla_put_failure_rcu;
4972
4973         for (i = 0; i < regdom->n_reg_rules; i++) {
4974                 struct nlattr *nl_reg_rule;
4975                 const struct ieee80211_reg_rule *reg_rule;
4976                 const struct ieee80211_freq_range *freq_range;
4977                 const struct ieee80211_power_rule *power_rule;
4978
4979                 reg_rule = &regdom->reg_rules[i];
4980                 freq_range = &reg_rule->freq_range;
4981                 power_rule = &reg_rule->power_rule;
4982
4983                 nl_reg_rule = nla_nest_start(msg, i);
4984                 if (!nl_reg_rule)
4985                         goto nla_put_failure_rcu;
4986
4987                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4988                                 reg_rule->flags) ||
4989                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4990                                 freq_range->start_freq_khz) ||
4991                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
4992                                 freq_range->end_freq_khz) ||
4993                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
4994                                 freq_range->max_bandwidth_khz) ||
4995                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
4996                                 power_rule->max_antenna_gain) ||
4997                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
4998                                 power_rule->max_eirp))
4999                         goto nla_put_failure_rcu;
5000
5001                 nla_nest_end(msg, nl_reg_rule);
5002         }
5003         rcu_read_unlock();
5004
5005         nla_nest_end(msg, nl_reg_rules);
5006
5007         genlmsg_end(msg, hdr);
5008         return genlmsg_reply(msg, info);
5009
5010 nla_put_failure_rcu:
5011         rcu_read_unlock();
5012 nla_put_failure:
5013         genlmsg_cancel(msg, hdr);
5014 put_failure:
5015         nlmsg_free(msg);
5016         return -EMSGSIZE;
5017 }
5018
5019 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5020 {
5021         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5022         struct nlattr *nl_reg_rule;
5023         char *alpha2 = NULL;
5024         int rem_reg_rules = 0, r = 0;
5025         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5026         u8 dfs_region = 0;
5027         struct ieee80211_regdomain *rd = NULL;
5028
5029         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5030                 return -EINVAL;
5031
5032         if (!info->attrs[NL80211_ATTR_REG_RULES])
5033                 return -EINVAL;
5034
5035         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5036
5037         if (info->attrs[NL80211_ATTR_DFS_REGION])
5038                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5039
5040         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5041                             rem_reg_rules) {
5042                 num_rules++;
5043                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5044                         return -EINVAL;
5045         }
5046
5047         size_of_regd = sizeof(struct ieee80211_regdomain) +
5048                        num_rules * sizeof(struct ieee80211_reg_rule);
5049
5050         rd = kzalloc(size_of_regd, GFP_KERNEL);
5051         if (!rd)
5052                 return -ENOMEM;
5053
5054         rd->n_reg_rules = num_rules;
5055         rd->alpha2[0] = alpha2[0];
5056         rd->alpha2[1] = alpha2[1];
5057
5058         /*
5059          * Disable DFS master mode if the DFS region was
5060          * not supported or known on this kernel.
5061          */
5062         if (reg_supported_dfs_region(dfs_region))
5063                 rd->dfs_region = dfs_region;
5064
5065         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5066                             rem_reg_rules) {
5067                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5068                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5069                           reg_rule_policy);
5070                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5071                 if (r)
5072                         goto bad_reg;
5073
5074                 rule_idx++;
5075
5076                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5077                         r = -EINVAL;
5078                         goto bad_reg;
5079                 }
5080         }
5081
5082         r = set_regdom(rd);
5083         /* set_regdom took ownership */
5084         rd = NULL;
5085
5086  bad_reg:
5087         kfree(rd);
5088         return r;
5089 }
5090
5091 static int validate_scan_freqs(struct nlattr *freqs)
5092 {
5093         struct nlattr *attr1, *attr2;
5094         int n_channels = 0, tmp1, tmp2;
5095
5096         nla_for_each_nested(attr1, freqs, tmp1) {
5097                 n_channels++;
5098                 /*
5099                  * Some hardware has a limited channel list for
5100                  * scanning, and it is pretty much nonsensical
5101                  * to scan for a channel twice, so disallow that
5102                  * and don't require drivers to check that the
5103                  * channel list they get isn't longer than what
5104                  * they can scan, as long as they can scan all
5105                  * the channels they registered at once.
5106                  */
5107                 nla_for_each_nested(attr2, freqs, tmp2)
5108                         if (attr1 != attr2 &&
5109                             nla_get_u32(attr1) == nla_get_u32(attr2))
5110                                 return 0;
5111         }
5112
5113         return n_channels;
5114 }
5115
5116 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5117 {
5118         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5119         struct wireless_dev *wdev = info->user_ptr[1];
5120         struct cfg80211_scan_request *request;
5121         struct nlattr *attr;
5122         struct wiphy *wiphy;
5123         int err, tmp, n_ssids = 0, n_channels, i;
5124         size_t ie_len;
5125
5126         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5127                 return -EINVAL;
5128
5129         wiphy = &rdev->wiphy;
5130
5131         if (!rdev->ops->scan)
5132                 return -EOPNOTSUPP;
5133
5134         if (rdev->scan_req) {
5135                 err = -EBUSY;
5136                 goto unlock;
5137         }
5138
5139         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5140                 n_channels = validate_scan_freqs(
5141                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5142                 if (!n_channels) {
5143                         err = -EINVAL;
5144                         goto unlock;
5145                 }
5146         } else {
5147                 enum ieee80211_band band;
5148                 n_channels = 0;
5149
5150                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5151                         if (wiphy->bands[band])
5152                                 n_channels += wiphy->bands[band]->n_channels;
5153         }
5154
5155         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5156                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5157                         n_ssids++;
5158
5159         if (n_ssids > wiphy->max_scan_ssids) {
5160                 err = -EINVAL;
5161                 goto unlock;
5162         }
5163
5164         if (info->attrs[NL80211_ATTR_IE])
5165                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5166         else
5167                 ie_len = 0;
5168
5169         if (ie_len > wiphy->max_scan_ie_len) {
5170                 err = -EINVAL;
5171                 goto unlock;
5172         }
5173
5174         request = kzalloc(sizeof(*request)
5175                         + sizeof(*request->ssids) * n_ssids
5176                         + sizeof(*request->channels) * n_channels
5177                         + ie_len, GFP_KERNEL);
5178         if (!request) {
5179                 err = -ENOMEM;
5180                 goto unlock;
5181         }
5182
5183         if (n_ssids)
5184                 request->ssids = (void *)&request->channels[n_channels];
5185         request->n_ssids = n_ssids;
5186         if (ie_len) {
5187                 if (request->ssids)
5188                         request->ie = (void *)(request->ssids + n_ssids);
5189                 else
5190                         request->ie = (void *)(request->channels + n_channels);
5191         }
5192
5193         i = 0;
5194         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5195                 /* user specified, bail out if channel not found */
5196                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5197                         struct ieee80211_channel *chan;
5198
5199                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5200
5201                         if (!chan) {
5202                                 err = -EINVAL;
5203                                 goto out_free;
5204                         }
5205
5206                         /* ignore disabled channels */
5207                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5208                                 continue;
5209
5210                         request->channels[i] = chan;
5211                         i++;
5212                 }
5213         } else {
5214                 enum ieee80211_band band;
5215
5216                 /* all channels */
5217                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5218                         int j;
5219                         if (!wiphy->bands[band])
5220                                 continue;
5221                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5222                                 struct ieee80211_channel *chan;
5223
5224                                 chan = &wiphy->bands[band]->channels[j];
5225
5226                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5227                                         continue;
5228
5229                                 request->channels[i] = chan;
5230                                 i++;
5231                         }
5232                 }
5233         }
5234
5235         if (!i) {
5236                 err = -EINVAL;
5237                 goto out_free;
5238         }
5239
5240         request->n_channels = i;
5241
5242         i = 0;
5243         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5244                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5245                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5246                                 err = -EINVAL;
5247                                 goto out_free;
5248                         }
5249                         request->ssids[i].ssid_len = nla_len(attr);
5250                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5251                         i++;
5252                 }
5253         }
5254
5255         if (info->attrs[NL80211_ATTR_IE]) {
5256                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5257                 memcpy((void *)request->ie,
5258                        nla_data(info->attrs[NL80211_ATTR_IE]),
5259                        request->ie_len);
5260         }
5261
5262         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5263                 if (wiphy->bands[i])
5264                         request->rates[i] =
5265                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5266
5267         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5268                 nla_for_each_nested(attr,
5269                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5270                                     tmp) {
5271                         enum ieee80211_band band = nla_type(attr);
5272
5273                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5274                                 err = -EINVAL;
5275                                 goto out_free;
5276                         }
5277                         err = ieee80211_get_ratemask(wiphy->bands[band],
5278                                                      nla_data(attr),
5279                                                      nla_len(attr),
5280                                                      &request->rates[band]);
5281                         if (err)
5282                                 goto out_free;
5283                 }
5284         }
5285
5286         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5287                 request->flags = nla_get_u32(
5288                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5289                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5290                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5291                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5292                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5293                         err = -EOPNOTSUPP;
5294                         goto out_free;
5295                 }
5296         }
5297
5298         request->no_cck =
5299                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5300
5301         request->wdev = wdev;
5302         request->wiphy = &rdev->wiphy;
5303         request->scan_start = jiffies;
5304
5305         rdev->scan_req = request;
5306         err = rdev_scan(rdev, request);
5307
5308         if (!err) {
5309                 nl80211_send_scan_start(rdev, wdev);
5310                 if (wdev->netdev)
5311                         dev_hold(wdev->netdev);
5312         } else {
5313  out_free:
5314                 rdev->scan_req = NULL;
5315                 kfree(request);
5316         }
5317
5318  unlock:
5319         return err;
5320 }
5321
5322 static int nl80211_start_sched_scan(struct sk_buff *skb,
5323                                     struct genl_info *info)
5324 {
5325         struct cfg80211_sched_scan_request *request;
5326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5327         struct net_device *dev = info->user_ptr[1];
5328         struct nlattr *attr;
5329         struct wiphy *wiphy;
5330         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5331         u32 interval;
5332         enum ieee80211_band band;
5333         size_t ie_len;
5334         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5335
5336         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5337             !rdev->ops->sched_scan_start)
5338                 return -EOPNOTSUPP;
5339
5340         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5341                 return -EINVAL;
5342
5343         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5344                 return -EINVAL;
5345
5346         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5347         if (interval == 0)
5348                 return -EINVAL;
5349
5350         wiphy = &rdev->wiphy;
5351
5352         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5353                 n_channels = validate_scan_freqs(
5354                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5355                 if (!n_channels)
5356                         return -EINVAL;
5357         } else {
5358                 n_channels = 0;
5359
5360                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5361                         if (wiphy->bands[band])
5362                                 n_channels += wiphy->bands[band]->n_channels;
5363         }
5364
5365         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5366                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5367                                     tmp)
5368                         n_ssids++;
5369
5370         if (n_ssids > wiphy->max_sched_scan_ssids)
5371                 return -EINVAL;
5372
5373         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5374                 nla_for_each_nested(attr,
5375                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5376                                     tmp)
5377                         n_match_sets++;
5378
5379         if (n_match_sets > wiphy->max_match_sets)
5380                 return -EINVAL;
5381
5382         if (info->attrs[NL80211_ATTR_IE])
5383                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5384         else
5385                 ie_len = 0;
5386
5387         if (ie_len > wiphy->max_sched_scan_ie_len)
5388                 return -EINVAL;
5389
5390         if (rdev->sched_scan_req) {
5391                 err = -EINPROGRESS;
5392                 goto out;
5393         }
5394
5395         request = kzalloc(sizeof(*request)
5396                         + sizeof(*request->ssids) * n_ssids
5397                         + sizeof(*request->match_sets) * n_match_sets
5398                         + sizeof(*request->channels) * n_channels
5399                         + ie_len, GFP_KERNEL);
5400         if (!request) {
5401                 err = -ENOMEM;
5402                 goto out;
5403         }
5404
5405         if (n_ssids)
5406                 request->ssids = (void *)&request->channels[n_channels];
5407         request->n_ssids = n_ssids;
5408         if (ie_len) {
5409                 if (request->ssids)
5410                         request->ie = (void *)(request->ssids + n_ssids);
5411                 else
5412                         request->ie = (void *)(request->channels + n_channels);
5413         }
5414
5415         if (n_match_sets) {
5416                 if (request->ie)
5417                         request->match_sets = (void *)(request->ie + ie_len);
5418                 else if (request->ssids)
5419                         request->match_sets =
5420                                 (void *)(request->ssids + n_ssids);
5421                 else
5422                         request->match_sets =
5423                                 (void *)(request->channels + n_channels);
5424         }
5425         request->n_match_sets = n_match_sets;
5426
5427         i = 0;
5428         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5429                 /* user specified, bail out if channel not found */
5430                 nla_for_each_nested(attr,
5431                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5432                                     tmp) {
5433                         struct ieee80211_channel *chan;
5434
5435                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5436
5437                         if (!chan) {
5438                                 err = -EINVAL;
5439                                 goto out_free;
5440                         }
5441
5442                         /* ignore disabled channels */
5443                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5444                                 continue;
5445
5446                         request->channels[i] = chan;
5447                         i++;
5448                 }
5449         } else {
5450                 /* all channels */
5451                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5452                         int j;
5453                         if (!wiphy->bands[band])
5454                                 continue;
5455                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5456                                 struct ieee80211_channel *chan;
5457
5458                                 chan = &wiphy->bands[band]->channels[j];
5459
5460                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5461                                         continue;
5462
5463                                 request->channels[i] = chan;
5464                                 i++;
5465                         }
5466                 }
5467         }
5468
5469         if (!i) {
5470                 err = -EINVAL;
5471                 goto out_free;
5472         }
5473
5474         request->n_channels = i;
5475
5476         i = 0;
5477         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5478                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5479                                     tmp) {
5480                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5481                                 err = -EINVAL;
5482                                 goto out_free;
5483                         }
5484                         request->ssids[i].ssid_len = nla_len(attr);
5485                         memcpy(request->ssids[i].ssid, nla_data(attr),
5486                                nla_len(attr));
5487                         i++;
5488                 }
5489         }
5490
5491         i = 0;
5492         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5493                 nla_for_each_nested(attr,
5494                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5495                                     tmp) {
5496                         struct nlattr *ssid, *rssi;
5497
5498                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5499                                   nla_data(attr), nla_len(attr),
5500                                   nl80211_match_policy);
5501                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5502                         if (ssid) {
5503                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5504                                         err = -EINVAL;
5505                                         goto out_free;
5506                                 }
5507                                 memcpy(request->match_sets[i].ssid.ssid,
5508                                        nla_data(ssid), nla_len(ssid));
5509                                 request->match_sets[i].ssid.ssid_len =
5510                                         nla_len(ssid);
5511                         }
5512                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5513                         if (rssi)
5514                                 request->rssi_thold = nla_get_u32(rssi);
5515                         else
5516                                 request->rssi_thold =
5517                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5518                         i++;
5519                 }
5520         }
5521
5522         if (info->attrs[NL80211_ATTR_IE]) {
5523                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5524                 memcpy((void *)request->ie,
5525                        nla_data(info->attrs[NL80211_ATTR_IE]),
5526                        request->ie_len);
5527         }
5528
5529         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5530                 request->flags = nla_get_u32(
5531                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5532                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5533                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5534                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5535                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5536                         err = -EOPNOTSUPP;
5537                         goto out_free;
5538                 }
5539         }
5540
5541         request->dev = dev;
5542         request->wiphy = &rdev->wiphy;
5543         request->interval = interval;
5544         request->scan_start = jiffies;
5545
5546         err = rdev_sched_scan_start(rdev, dev, request);
5547         if (!err) {
5548                 rdev->sched_scan_req = request;
5549                 nl80211_send_sched_scan(rdev, dev,
5550                                         NL80211_CMD_START_SCHED_SCAN);
5551                 goto out;
5552         }
5553
5554 out_free:
5555         kfree(request);
5556 out:
5557         return err;
5558 }
5559
5560 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5561                                    struct genl_info *info)
5562 {
5563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5564
5565         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5566             !rdev->ops->sched_scan_stop)
5567                 return -EOPNOTSUPP;
5568
5569         return __cfg80211_stop_sched_scan(rdev, false);
5570 }
5571
5572 static int nl80211_start_radar_detection(struct sk_buff *skb,
5573                                          struct genl_info *info)
5574 {
5575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5576         struct net_device *dev = info->user_ptr[1];
5577         struct wireless_dev *wdev = dev->ieee80211_ptr;
5578         struct cfg80211_chan_def chandef;
5579         int err;
5580
5581         err = nl80211_parse_chandef(rdev, info, &chandef);
5582         if (err)
5583                 return err;
5584
5585         if (wdev->cac_started)
5586                 return -EBUSY;
5587
5588         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5589         if (err < 0)
5590                 return err;
5591
5592         if (err == 0)
5593                 return -EINVAL;
5594
5595         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5596                 return -EINVAL;
5597
5598         if (!rdev->ops->start_radar_detection)
5599                 return -EOPNOTSUPP;
5600
5601         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5602                                            chandef.chan, CHAN_MODE_SHARED,
5603                                            BIT(chandef.width));
5604         if (err)
5605                 return err;
5606
5607         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5608         if (!err) {
5609                 wdev->channel = chandef.chan;
5610                 wdev->cac_started = true;
5611                 wdev->cac_start_time = jiffies;
5612         }
5613         return err;
5614 }
5615
5616 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5617                             u32 seq, int flags,
5618                             struct cfg80211_registered_device *rdev,
5619                             struct wireless_dev *wdev,
5620                             struct cfg80211_internal_bss *intbss)
5621 {
5622         struct cfg80211_bss *res = &intbss->pub;
5623         const struct cfg80211_bss_ies *ies;
5624         void *hdr;
5625         struct nlattr *bss;
5626         bool tsf = false;
5627
5628         ASSERT_WDEV_LOCK(wdev);
5629
5630         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5631                              NL80211_CMD_NEW_SCAN_RESULTS);
5632         if (!hdr)
5633                 return -1;
5634
5635         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5636
5637         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5638                 goto nla_put_failure;
5639         if (wdev->netdev &&
5640             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5641                 goto nla_put_failure;
5642         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5643                 goto nla_put_failure;
5644
5645         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5646         if (!bss)
5647                 goto nla_put_failure;
5648         if ((!is_zero_ether_addr(res->bssid) &&
5649              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5650                 goto nla_put_failure;
5651
5652         rcu_read_lock();
5653         ies = rcu_dereference(res->ies);
5654         if (ies) {
5655                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5656                         goto fail_unlock_rcu;
5657                 tsf = true;
5658                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5659                                         ies->len, ies->data))
5660                         goto fail_unlock_rcu;
5661         }
5662         ies = rcu_dereference(res->beacon_ies);
5663         if (ies) {
5664                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5665                         goto fail_unlock_rcu;
5666                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5667                                         ies->len, ies->data))
5668                         goto fail_unlock_rcu;
5669         }
5670         rcu_read_unlock();
5671
5672         if (res->beacon_interval &&
5673             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5674                 goto nla_put_failure;
5675         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5676             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5677             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5678             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5679                         jiffies_to_msecs(jiffies - intbss->ts)))
5680                 goto nla_put_failure;
5681
5682         switch (rdev->wiphy.signal_type) {
5683         case CFG80211_SIGNAL_TYPE_MBM:
5684                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5685                         goto nla_put_failure;
5686                 break;
5687         case CFG80211_SIGNAL_TYPE_UNSPEC:
5688                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5689                         goto nla_put_failure;
5690                 break;
5691         default:
5692                 break;
5693         }
5694
5695         switch (wdev->iftype) {
5696         case NL80211_IFTYPE_P2P_CLIENT:
5697         case NL80211_IFTYPE_STATION:
5698                 if (intbss == wdev->current_bss &&
5699                     nla_put_u32(msg, NL80211_BSS_STATUS,
5700                                 NL80211_BSS_STATUS_ASSOCIATED))
5701                         goto nla_put_failure;
5702                 break;
5703         case NL80211_IFTYPE_ADHOC:
5704                 if (intbss == wdev->current_bss &&
5705                     nla_put_u32(msg, NL80211_BSS_STATUS,
5706                                 NL80211_BSS_STATUS_IBSS_JOINED))
5707                         goto nla_put_failure;
5708                 break;
5709         default:
5710                 break;
5711         }
5712
5713         nla_nest_end(msg, bss);
5714
5715         return genlmsg_end(msg, hdr);
5716
5717  fail_unlock_rcu:
5718         rcu_read_unlock();
5719  nla_put_failure:
5720         genlmsg_cancel(msg, hdr);
5721         return -EMSGSIZE;
5722 }
5723
5724 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5725 {
5726         struct cfg80211_registered_device *rdev;
5727         struct cfg80211_internal_bss *scan;
5728         struct wireless_dev *wdev;
5729         int start = cb->args[2], idx = 0;
5730         int err;
5731
5732         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5733         if (err)
5734                 return err;
5735
5736         wdev_lock(wdev);
5737         spin_lock_bh(&rdev->bss_lock);
5738         cfg80211_bss_expire(rdev);
5739
5740         cb->seq = rdev->bss_generation;
5741
5742         list_for_each_entry(scan, &rdev->bss_list, list) {
5743                 if (++idx <= start)
5744                         continue;
5745                 if (nl80211_send_bss(skb, cb,
5746                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5747                                 rdev, wdev, scan) < 0) {
5748                         idx--;
5749                         break;
5750                 }
5751         }
5752
5753         spin_unlock_bh(&rdev->bss_lock);
5754         wdev_unlock(wdev);
5755
5756         cb->args[2] = idx;
5757         nl80211_finish_wdev_dump(rdev);
5758
5759         return skb->len;
5760 }
5761
5762 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5763                                 int flags, struct net_device *dev,
5764                                 struct survey_info *survey)
5765 {
5766         void *hdr;
5767         struct nlattr *infoattr;
5768
5769         hdr = nl80211hdr_put(msg, portid, seq, flags,
5770                              NL80211_CMD_NEW_SURVEY_RESULTS);
5771         if (!hdr)
5772                 return -ENOMEM;
5773
5774         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5775                 goto nla_put_failure;
5776
5777         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5778         if (!infoattr)
5779                 goto nla_put_failure;
5780
5781         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5782                         survey->channel->center_freq))
5783                 goto nla_put_failure;
5784
5785         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5786             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5787                 goto nla_put_failure;
5788         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5789             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5790                 goto nla_put_failure;
5791         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5792             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5793                         survey->channel_time))
5794                 goto nla_put_failure;
5795         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5796             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5797                         survey->channel_time_busy))
5798                 goto nla_put_failure;
5799         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5800             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5801                         survey->channel_time_ext_busy))
5802                 goto nla_put_failure;
5803         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5804             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5805                         survey->channel_time_rx))
5806                 goto nla_put_failure;
5807         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5808             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5809                         survey->channel_time_tx))
5810                 goto nla_put_failure;
5811
5812         nla_nest_end(msg, infoattr);
5813
5814         return genlmsg_end(msg, hdr);
5815
5816  nla_put_failure:
5817         genlmsg_cancel(msg, hdr);
5818         return -EMSGSIZE;
5819 }
5820
5821 static int nl80211_dump_survey(struct sk_buff *skb,
5822                         struct netlink_callback *cb)
5823 {
5824         struct survey_info survey;
5825         struct cfg80211_registered_device *dev;
5826         struct wireless_dev *wdev;
5827         int survey_idx = cb->args[2];
5828         int res;
5829
5830         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5831         if (res)
5832                 return res;
5833
5834         if (!wdev->netdev) {
5835                 res = -EINVAL;
5836                 goto out_err;
5837         }
5838
5839         if (!dev->ops->dump_survey) {
5840                 res = -EOPNOTSUPP;
5841                 goto out_err;
5842         }
5843
5844         while (1) {
5845                 struct ieee80211_channel *chan;
5846
5847                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5848                 if (res == -ENOENT)
5849                         break;
5850                 if (res)
5851                         goto out_err;
5852
5853                 /* Survey without a channel doesn't make sense */
5854                 if (!survey.channel) {
5855                         res = -EINVAL;
5856                         goto out;
5857                 }
5858
5859                 chan = ieee80211_get_channel(&dev->wiphy,
5860                                              survey.channel->center_freq);
5861                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5862                         survey_idx++;
5863                         continue;
5864                 }
5865
5866                 if (nl80211_send_survey(skb,
5867                                 NETLINK_CB(cb->skb).portid,
5868                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5869                                 wdev->netdev, &survey) < 0)
5870                         goto out;
5871                 survey_idx++;
5872         }
5873
5874  out:
5875         cb->args[2] = survey_idx;
5876         res = skb->len;
5877  out_err:
5878         nl80211_finish_wdev_dump(dev);
5879         return res;
5880 }
5881
5882 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5883 {
5884         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5885                                   NL80211_WPA_VERSION_2));
5886 }
5887
5888 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
5889 {
5890         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5891         struct net_device *dev = info->user_ptr[1];
5892         struct ieee80211_channel *chan;
5893         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
5894         int err, ssid_len, ie_len = 0, sae_data_len = 0;
5895         enum nl80211_auth_type auth_type;
5896         struct key_parse key;
5897         bool local_state_change;
5898
5899         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5900                 return -EINVAL;
5901
5902         if (!info->attrs[NL80211_ATTR_MAC])
5903                 return -EINVAL;
5904
5905         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
5906                 return -EINVAL;
5907
5908         if (!info->attrs[NL80211_ATTR_SSID])
5909                 return -EINVAL;
5910
5911         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
5912                 return -EINVAL;
5913
5914         err = nl80211_parse_key(info, &key);
5915         if (err)
5916                 return err;
5917
5918         if (key.idx >= 0) {
5919                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
5920                         return -EINVAL;
5921                 if (!key.p.key || !key.p.key_len)
5922                         return -EINVAL;
5923                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
5924                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
5925                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
5926                      key.p.key_len != WLAN_KEY_LEN_WEP104))
5927                         return -EINVAL;
5928                 if (key.idx > 4)
5929                         return -EINVAL;
5930         } else {
5931                 key.p.key_len = 0;
5932                 key.p.key = NULL;
5933         }
5934
5935         if (key.idx >= 0) {
5936                 int i;
5937                 bool ok = false;
5938                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
5939                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
5940                                 ok = true;
5941                                 break;
5942                         }
5943                 }
5944                 if (!ok)
5945                         return -EINVAL;
5946         }
5947
5948         if (!rdev->ops->auth)
5949                 return -EOPNOTSUPP;
5950
5951         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
5952             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
5953                 return -EOPNOTSUPP;
5954
5955         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
5956         chan = ieee80211_get_channel(&rdev->wiphy,
5957                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
5958         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
5959                 return -EINVAL;
5960
5961         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5962         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
5963
5964         if (info->attrs[NL80211_ATTR_IE]) {
5965                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
5966                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5967         }
5968
5969         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
5970         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
5971                 return -EINVAL;
5972
5973         if (auth_type == NL80211_AUTHTYPE_SAE &&
5974             !info->attrs[NL80211_ATTR_SAE_DATA])
5975                 return -EINVAL;
5976
5977         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
5978                 if (auth_type != NL80211_AUTHTYPE_SAE)
5979                         return -EINVAL;
5980                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
5981                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
5982                 /* need to include at least Auth Transaction and Status Code */
5983                 if (sae_data_len < 4)
5984                         return -EINVAL;
5985         }
5986
5987         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
5988
5989         /*
5990          * Since we no longer track auth state, ignore
5991          * requests to only change local state.
5992          */
5993         if (local_state_change)
5994                 return 0;
5995
5996         wdev_lock(dev->ieee80211_ptr);
5997         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
5998                                  ssid, ssid_len, ie, ie_len,
5999                                  key.p.key, key.p.key_len, key.idx,
6000                                  sae_data, sae_data_len);
6001         wdev_unlock(dev->ieee80211_ptr);
6002         return err;
6003 }
6004
6005 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6006                                    struct genl_info *info,
6007                                    struct cfg80211_crypto_settings *settings,
6008                                    int cipher_limit)
6009 {
6010         memset(settings, 0, sizeof(*settings));
6011
6012         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6013
6014         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6015                 u16 proto;
6016                 proto = nla_get_u16(
6017                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6018                 settings->control_port_ethertype = cpu_to_be16(proto);
6019                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6020                     proto != ETH_P_PAE)
6021                         return -EINVAL;
6022                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6023                         settings->control_port_no_encrypt = true;
6024         } else
6025                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6026
6027         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6028                 void *data;
6029                 int len, i;
6030
6031                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6032                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6033                 settings->n_ciphers_pairwise = len / sizeof(u32);
6034
6035                 if (len % sizeof(u32))
6036                         return -EINVAL;
6037
6038                 if (settings->n_ciphers_pairwise > cipher_limit)
6039                         return -EINVAL;
6040
6041                 memcpy(settings->ciphers_pairwise, data, len);
6042
6043                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6044                         if (!cfg80211_supported_cipher_suite(
6045                                         &rdev->wiphy,
6046                                         settings->ciphers_pairwise[i]))
6047                                 return -EINVAL;
6048         }
6049
6050         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6051                 settings->cipher_group =
6052                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6053                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6054                                                      settings->cipher_group))
6055                         return -EINVAL;
6056         }
6057
6058         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6059                 settings->wpa_versions =
6060                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6061                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6062                         return -EINVAL;
6063         }
6064
6065         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6066                 void *data;
6067                 int len;
6068
6069                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6070                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6071                 settings->n_akm_suites = len / sizeof(u32);
6072
6073                 if (len % sizeof(u32))
6074                         return -EINVAL;
6075
6076                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6077                         return -EINVAL;
6078
6079                 memcpy(settings->akm_suites, data, len);
6080         }
6081
6082         return 0;
6083 }
6084
6085 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6086 {
6087         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6088         struct net_device *dev = info->user_ptr[1];
6089         struct ieee80211_channel *chan;
6090         struct cfg80211_assoc_request req = {};
6091         const u8 *bssid, *ssid;
6092         int err, ssid_len = 0;
6093
6094         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6095                 return -EINVAL;
6096
6097         if (!info->attrs[NL80211_ATTR_MAC] ||
6098             !info->attrs[NL80211_ATTR_SSID] ||
6099             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6100                 return -EINVAL;
6101
6102         if (!rdev->ops->assoc)
6103                 return -EOPNOTSUPP;
6104
6105         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6106             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6107                 return -EOPNOTSUPP;
6108
6109         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6110
6111         chan = ieee80211_get_channel(&rdev->wiphy,
6112                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6113         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6114                 return -EINVAL;
6115
6116         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6117         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6118
6119         if (info->attrs[NL80211_ATTR_IE]) {
6120                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6121                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6122         }
6123
6124         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6125                 enum nl80211_mfp mfp =
6126                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6127                 if (mfp == NL80211_MFP_REQUIRED)
6128                         req.use_mfp = true;
6129                 else if (mfp != NL80211_MFP_NO)
6130                         return -EINVAL;
6131         }
6132
6133         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6134                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6135
6136         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6137                 req.flags |= ASSOC_REQ_DISABLE_HT;
6138
6139         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6140                 memcpy(&req.ht_capa_mask,
6141                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6142                        sizeof(req.ht_capa_mask));
6143
6144         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6145                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6146                         return -EINVAL;
6147                 memcpy(&req.ht_capa,
6148                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6149                        sizeof(req.ht_capa));
6150         }
6151
6152         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6153                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6154
6155         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6156                 memcpy(&req.vht_capa_mask,
6157                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6158                        sizeof(req.vht_capa_mask));
6159
6160         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6161                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6162                         return -EINVAL;
6163                 memcpy(&req.vht_capa,
6164                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6165                        sizeof(req.vht_capa));
6166         }
6167
6168         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6169         if (!err) {
6170                 wdev_lock(dev->ieee80211_ptr);
6171                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6172                                           ssid, ssid_len, &req);
6173                 wdev_unlock(dev->ieee80211_ptr);
6174         }
6175
6176         return err;
6177 }
6178
6179 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6180 {
6181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6182         struct net_device *dev = info->user_ptr[1];
6183         const u8 *ie = NULL, *bssid;
6184         int ie_len = 0, err;
6185         u16 reason_code;
6186         bool local_state_change;
6187
6188         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6189                 return -EINVAL;
6190
6191         if (!info->attrs[NL80211_ATTR_MAC])
6192                 return -EINVAL;
6193
6194         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6195                 return -EINVAL;
6196
6197         if (!rdev->ops->deauth)
6198                 return -EOPNOTSUPP;
6199
6200         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6201             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6202                 return -EOPNOTSUPP;
6203
6204         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6205
6206         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6207         if (reason_code == 0) {
6208                 /* Reason Code 0 is reserved */
6209                 return -EINVAL;
6210         }
6211
6212         if (info->attrs[NL80211_ATTR_IE]) {
6213                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6214                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6215         }
6216
6217         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6218
6219         wdev_lock(dev->ieee80211_ptr);
6220         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6221                                    local_state_change);
6222         wdev_unlock(dev->ieee80211_ptr);
6223         return err;
6224 }
6225
6226 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6227 {
6228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6229         struct net_device *dev = info->user_ptr[1];
6230         const u8 *ie = NULL, *bssid;
6231         int ie_len = 0, err;
6232         u16 reason_code;
6233         bool local_state_change;
6234
6235         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6236                 return -EINVAL;
6237
6238         if (!info->attrs[NL80211_ATTR_MAC])
6239                 return -EINVAL;
6240
6241         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6242                 return -EINVAL;
6243
6244         if (!rdev->ops->disassoc)
6245                 return -EOPNOTSUPP;
6246
6247         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6248             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6249                 return -EOPNOTSUPP;
6250
6251         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6252
6253         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6254         if (reason_code == 0) {
6255                 /* Reason Code 0 is reserved */
6256                 return -EINVAL;
6257         }
6258
6259         if (info->attrs[NL80211_ATTR_IE]) {
6260                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6261                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6262         }
6263
6264         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6265
6266         wdev_lock(dev->ieee80211_ptr);
6267         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6268                                      local_state_change);
6269         wdev_unlock(dev->ieee80211_ptr);
6270         return err;
6271 }
6272
6273 static bool
6274 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6275                          int mcast_rate[IEEE80211_NUM_BANDS],
6276                          int rateval)
6277 {
6278         struct wiphy *wiphy = &rdev->wiphy;
6279         bool found = false;
6280         int band, i;
6281
6282         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6283                 struct ieee80211_supported_band *sband;
6284
6285                 sband = wiphy->bands[band];
6286                 if (!sband)
6287                         continue;
6288
6289                 for (i = 0; i < sband->n_bitrates; i++) {
6290                         if (sband->bitrates[i].bitrate == rateval) {
6291                                 mcast_rate[band] = i + 1;
6292                                 found = true;
6293                                 break;
6294                         }
6295                 }
6296         }
6297
6298         return found;
6299 }
6300
6301 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6302 {
6303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6304         struct net_device *dev = info->user_ptr[1];
6305         struct cfg80211_ibss_params ibss;
6306         struct wiphy *wiphy;
6307         struct cfg80211_cached_keys *connkeys = NULL;
6308         int err;
6309
6310         memset(&ibss, 0, sizeof(ibss));
6311
6312         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6313                 return -EINVAL;
6314
6315         if (!info->attrs[NL80211_ATTR_SSID] ||
6316             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6317                 return -EINVAL;
6318
6319         ibss.beacon_interval = 100;
6320
6321         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6322                 ibss.beacon_interval =
6323                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6324                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6325                         return -EINVAL;
6326         }
6327
6328         if (!rdev->ops->join_ibss)
6329                 return -EOPNOTSUPP;
6330
6331         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6332                 return -EOPNOTSUPP;
6333
6334         wiphy = &rdev->wiphy;
6335
6336         if (info->attrs[NL80211_ATTR_MAC]) {
6337                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6338
6339                 if (!is_valid_ether_addr(ibss.bssid))
6340                         return -EINVAL;
6341         }
6342         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6343         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6344
6345         if (info->attrs[NL80211_ATTR_IE]) {
6346                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6347                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6348         }
6349
6350         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6351         if (err)
6352                 return err;
6353
6354         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6355                 return -EINVAL;
6356
6357         switch (ibss.chandef.width) {
6358         case NL80211_CHAN_WIDTH_5:
6359         case NL80211_CHAN_WIDTH_10:
6360         case NL80211_CHAN_WIDTH_20_NOHT:
6361                 break;
6362         case NL80211_CHAN_WIDTH_20:
6363         case NL80211_CHAN_WIDTH_40:
6364                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6365                         break;
6366         default:
6367                 return -EINVAL;
6368         }
6369
6370         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6371         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6372
6373         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6374                 u8 *rates =
6375                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6376                 int n_rates =
6377                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6378                 struct ieee80211_supported_band *sband =
6379                         wiphy->bands[ibss.chandef.chan->band];
6380
6381                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6382                                              &ibss.basic_rates);
6383                 if (err)
6384                         return err;
6385         }
6386
6387         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6388                 memcpy(&ibss.ht_capa_mask,
6389                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6390                        sizeof(ibss.ht_capa_mask));
6391
6392         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6393                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6394                         return -EINVAL;
6395                 memcpy(&ibss.ht_capa,
6396                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6397                        sizeof(ibss.ht_capa));
6398         }
6399
6400         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6401             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6402                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6403                 return -EINVAL;
6404
6405         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6406                 bool no_ht = false;
6407
6408                 connkeys = nl80211_parse_connkeys(rdev,
6409                                           info->attrs[NL80211_ATTR_KEYS],
6410                                           &no_ht);
6411                 if (IS_ERR(connkeys))
6412                         return PTR_ERR(connkeys);
6413
6414                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6415                     no_ht) {
6416                         kfree(connkeys);
6417                         return -EINVAL;
6418                 }
6419         }
6420
6421         ibss.control_port =
6422                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6423
6424         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6425         if (err)
6426                 kfree(connkeys);
6427         return err;
6428 }
6429
6430 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6431 {
6432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6433         struct net_device *dev = info->user_ptr[1];
6434
6435         if (!rdev->ops->leave_ibss)
6436                 return -EOPNOTSUPP;
6437
6438         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6439                 return -EOPNOTSUPP;
6440
6441         return cfg80211_leave_ibss(rdev, dev, false);
6442 }
6443
6444 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6445 {
6446         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6447         struct net_device *dev = info->user_ptr[1];
6448         int mcast_rate[IEEE80211_NUM_BANDS];
6449         u32 nla_rate;
6450         int err;
6451
6452         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6453             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6454                 return -EOPNOTSUPP;
6455
6456         if (!rdev->ops->set_mcast_rate)
6457                 return -EOPNOTSUPP;
6458
6459         memset(mcast_rate, 0, sizeof(mcast_rate));
6460
6461         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6462                 return -EINVAL;
6463
6464         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6465         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6466                 return -EINVAL;
6467
6468         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6469
6470         return err;
6471 }
6472
6473
6474 #ifdef CONFIG_NL80211_TESTMODE
6475 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6476         .name = "testmode",
6477 };
6478
6479 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6480 {
6481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6482         int err;
6483
6484         if (!info->attrs[NL80211_ATTR_TESTDATA])
6485                 return -EINVAL;
6486
6487         err = -EOPNOTSUPP;
6488         if (rdev->ops->testmode_cmd) {
6489                 rdev->testmode_info = info;
6490                 err = rdev_testmode_cmd(rdev,
6491                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6492                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6493                 rdev->testmode_info = NULL;
6494         }
6495
6496         return err;
6497 }
6498
6499 static int nl80211_testmode_dump(struct sk_buff *skb,
6500                                  struct netlink_callback *cb)
6501 {
6502         struct cfg80211_registered_device *rdev;
6503         int err;
6504         long phy_idx;
6505         void *data = NULL;
6506         int data_len = 0;
6507
6508         rtnl_lock();
6509
6510         if (cb->args[0]) {
6511                 /*
6512                  * 0 is a valid index, but not valid for args[0],
6513                  * so we need to offset by 1.
6514                  */
6515                 phy_idx = cb->args[0] - 1;
6516         } else {
6517                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6518                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6519                                   nl80211_policy);
6520                 if (err)
6521                         goto out_err;
6522
6523                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6524                                                   nl80211_fam.attrbuf);
6525                 if (IS_ERR(rdev)) {
6526                         err = PTR_ERR(rdev);
6527                         goto out_err;
6528                 }
6529                 phy_idx = rdev->wiphy_idx;
6530                 rdev = NULL;
6531
6532                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6533                         cb->args[1] =
6534                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6535         }
6536
6537         if (cb->args[1]) {
6538                 data = nla_data((void *)cb->args[1]);
6539                 data_len = nla_len((void *)cb->args[1]);
6540         }
6541
6542         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6543         if (!rdev) {
6544                 err = -ENOENT;
6545                 goto out_err;
6546         }
6547
6548         if (!rdev->ops->testmode_dump) {
6549                 err = -EOPNOTSUPP;
6550                 goto out_err;
6551         }
6552
6553         while (1) {
6554                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6555                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6556                                            NL80211_CMD_TESTMODE);
6557                 struct nlattr *tmdata;
6558
6559                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6560                         genlmsg_cancel(skb, hdr);
6561                         break;
6562                 }
6563
6564                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6565                 if (!tmdata) {
6566                         genlmsg_cancel(skb, hdr);
6567                         break;
6568                 }
6569                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6570                 nla_nest_end(skb, tmdata);
6571
6572                 if (err == -ENOBUFS || err == -ENOENT) {
6573                         genlmsg_cancel(skb, hdr);
6574                         break;
6575                 } else if (err) {
6576                         genlmsg_cancel(skb, hdr);
6577                         goto out_err;
6578                 }
6579
6580                 genlmsg_end(skb, hdr);
6581         }
6582
6583         err = skb->len;
6584         /* see above */
6585         cb->args[0] = phy_idx + 1;
6586  out_err:
6587         rtnl_unlock();
6588         return err;
6589 }
6590
6591 static struct sk_buff *
6592 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6593                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6594 {
6595         struct sk_buff *skb;
6596         void *hdr;
6597         struct nlattr *data;
6598
6599         skb = nlmsg_new(approxlen + 100, gfp);
6600         if (!skb)
6601                 return NULL;
6602
6603         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6604         if (!hdr) {
6605                 kfree_skb(skb);
6606                 return NULL;
6607         }
6608
6609         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6610                 goto nla_put_failure;
6611         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6612
6613         ((void **)skb->cb)[0] = rdev;
6614         ((void **)skb->cb)[1] = hdr;
6615         ((void **)skb->cb)[2] = data;
6616
6617         return skb;
6618
6619  nla_put_failure:
6620         kfree_skb(skb);
6621         return NULL;
6622 }
6623
6624 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6625                                                   int approxlen)
6626 {
6627         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6628
6629         if (WARN_ON(!rdev->testmode_info))
6630                 return NULL;
6631
6632         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6633                                 rdev->testmode_info->snd_portid,
6634                                 rdev->testmode_info->snd_seq,
6635                                 GFP_KERNEL);
6636 }
6637 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6638
6639 int cfg80211_testmode_reply(struct sk_buff *skb)
6640 {
6641         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6642         void *hdr = ((void **)skb->cb)[1];
6643         struct nlattr *data = ((void **)skb->cb)[2];
6644
6645         if (WARN_ON(!rdev->testmode_info)) {
6646                 kfree_skb(skb);
6647                 return -EINVAL;
6648         }
6649
6650         nla_nest_end(skb, data);
6651         genlmsg_end(skb, hdr);
6652         return genlmsg_reply(skb, rdev->testmode_info);
6653 }
6654 EXPORT_SYMBOL(cfg80211_testmode_reply);
6655
6656 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6657                                                   int approxlen, gfp_t gfp)
6658 {
6659         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6660
6661         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6662 }
6663 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6664
6665 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6666 {
6667         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6668         void *hdr = ((void **)skb->cb)[1];
6669         struct nlattr *data = ((void **)skb->cb)[2];
6670
6671         nla_nest_end(skb, data);
6672         genlmsg_end(skb, hdr);
6673         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6674                                 nl80211_testmode_mcgrp.id, gfp);
6675 }
6676 EXPORT_SYMBOL(cfg80211_testmode_event);
6677 #endif
6678
6679 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6680 {
6681         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6682         struct net_device *dev = info->user_ptr[1];
6683         struct cfg80211_connect_params connect;
6684         struct wiphy *wiphy;
6685         struct cfg80211_cached_keys *connkeys = NULL;
6686         int err;
6687
6688         memset(&connect, 0, sizeof(connect));
6689
6690         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6691                 return -EINVAL;
6692
6693         if (!info->attrs[NL80211_ATTR_SSID] ||
6694             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6695                 return -EINVAL;
6696
6697         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6698                 connect.auth_type =
6699                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6700                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6701                                              NL80211_CMD_CONNECT))
6702                         return -EINVAL;
6703         } else
6704                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6705
6706         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6707
6708         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6709                                       NL80211_MAX_NR_CIPHER_SUITES);
6710         if (err)
6711                 return err;
6712
6713         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6714             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6715                 return -EOPNOTSUPP;
6716
6717         wiphy = &rdev->wiphy;
6718
6719         connect.bg_scan_period = -1;
6720         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6721                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6722                 connect.bg_scan_period =
6723                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6724         }
6725
6726         if (info->attrs[NL80211_ATTR_MAC])
6727                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6728         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6729         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6730
6731         if (info->attrs[NL80211_ATTR_IE]) {
6732                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6733                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6734         }
6735
6736         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6737                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6738                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6739                     connect.mfp != NL80211_MFP_NO)
6740                         return -EINVAL;
6741         } else {
6742                 connect.mfp = NL80211_MFP_NO;
6743         }
6744
6745         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6746                 connect.channel =
6747                         ieee80211_get_channel(wiphy,
6748                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6749                 if (!connect.channel ||
6750                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6751                         return -EINVAL;
6752         }
6753
6754         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6755                 connkeys = nl80211_parse_connkeys(rdev,
6756                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6757                 if (IS_ERR(connkeys))
6758                         return PTR_ERR(connkeys);
6759         }
6760
6761         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6762                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6763
6764         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6765                 memcpy(&connect.ht_capa_mask,
6766                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6767                        sizeof(connect.ht_capa_mask));
6768
6769         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6770                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6771                         kfree(connkeys);
6772                         return -EINVAL;
6773                 }
6774                 memcpy(&connect.ht_capa,
6775                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6776                        sizeof(connect.ht_capa));
6777         }
6778
6779         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6780                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6781
6782         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6783                 memcpy(&connect.vht_capa_mask,
6784                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6785                        sizeof(connect.vht_capa_mask));
6786
6787         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6788                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6789                         kfree(connkeys);
6790                         return -EINVAL;
6791                 }
6792                 memcpy(&connect.vht_capa,
6793                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6794                        sizeof(connect.vht_capa));
6795         }
6796
6797         wdev_lock(dev->ieee80211_ptr);
6798         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6799         wdev_unlock(dev->ieee80211_ptr);
6800         if (err)
6801                 kfree(connkeys);
6802         return err;
6803 }
6804
6805 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6806 {
6807         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6808         struct net_device *dev = info->user_ptr[1];
6809         u16 reason;
6810         int ret;
6811
6812         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6813                 reason = WLAN_REASON_DEAUTH_LEAVING;
6814         else
6815                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6816
6817         if (reason == 0)
6818                 return -EINVAL;
6819
6820         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6821             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6822                 return -EOPNOTSUPP;
6823
6824         wdev_lock(dev->ieee80211_ptr);
6825         ret = cfg80211_disconnect(rdev, dev, reason, true);
6826         wdev_unlock(dev->ieee80211_ptr);
6827         return ret;
6828 }
6829
6830 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6831 {
6832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6833         struct net *net;
6834         int err;
6835         u32 pid;
6836
6837         if (!info->attrs[NL80211_ATTR_PID])
6838                 return -EINVAL;
6839
6840         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6841
6842         net = get_net_ns_by_pid(pid);
6843         if (IS_ERR(net))
6844                 return PTR_ERR(net);
6845
6846         err = 0;
6847
6848         /* check if anything to do */
6849         if (!net_eq(wiphy_net(&rdev->wiphy), net))
6850                 err = cfg80211_switch_netns(rdev, net);
6851
6852         put_net(net);
6853         return err;
6854 }
6855
6856 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6857 {
6858         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6859         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6860                         struct cfg80211_pmksa *pmksa) = NULL;
6861         struct net_device *dev = info->user_ptr[1];
6862         struct cfg80211_pmksa pmksa;
6863
6864         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6865
6866         if (!info->attrs[NL80211_ATTR_MAC])
6867                 return -EINVAL;
6868
6869         if (!info->attrs[NL80211_ATTR_PMKID])
6870                 return -EINVAL;
6871
6872         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6873         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6874
6875         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6876             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6877                 return -EOPNOTSUPP;
6878
6879         switch (info->genlhdr->cmd) {
6880         case NL80211_CMD_SET_PMKSA:
6881                 rdev_ops = rdev->ops->set_pmksa;
6882                 break;
6883         case NL80211_CMD_DEL_PMKSA:
6884                 rdev_ops = rdev->ops->del_pmksa;
6885                 break;
6886         default:
6887                 WARN_ON(1);
6888                 break;
6889         }
6890
6891         if (!rdev_ops)
6892                 return -EOPNOTSUPP;
6893
6894         return rdev_ops(&rdev->wiphy, dev, &pmksa);
6895 }
6896
6897 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
6898 {
6899         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6900         struct net_device *dev = info->user_ptr[1];
6901
6902         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6903             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6904                 return -EOPNOTSUPP;
6905
6906         if (!rdev->ops->flush_pmksa)
6907                 return -EOPNOTSUPP;
6908
6909         return rdev_flush_pmksa(rdev, dev);
6910 }
6911
6912 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
6913 {
6914         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6915         struct net_device *dev = info->user_ptr[1];
6916         u8 action_code, dialog_token;
6917         u16 status_code;
6918         u8 *peer;
6919
6920         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6921             !rdev->ops->tdls_mgmt)
6922                 return -EOPNOTSUPP;
6923
6924         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
6925             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
6926             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
6927             !info->attrs[NL80211_ATTR_IE] ||
6928             !info->attrs[NL80211_ATTR_MAC])
6929                 return -EINVAL;
6930
6931         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6932         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
6933         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
6934         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
6935
6936         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
6937                               dialog_token, status_code,
6938                               nla_data(info->attrs[NL80211_ATTR_IE]),
6939                               nla_len(info->attrs[NL80211_ATTR_IE]));
6940 }
6941
6942 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
6943 {
6944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6945         struct net_device *dev = info->user_ptr[1];
6946         enum nl80211_tdls_operation operation;
6947         u8 *peer;
6948
6949         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
6950             !rdev->ops->tdls_oper)
6951                 return -EOPNOTSUPP;
6952
6953         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
6954             !info->attrs[NL80211_ATTR_MAC])
6955                 return -EINVAL;
6956
6957         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
6958         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
6959
6960         return rdev_tdls_oper(rdev, dev, peer, operation);
6961 }
6962
6963 static int nl80211_remain_on_channel(struct sk_buff *skb,
6964                                      struct genl_info *info)
6965 {
6966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6967         struct wireless_dev *wdev = info->user_ptr[1];
6968         struct cfg80211_chan_def chandef;
6969         struct sk_buff *msg;
6970         void *hdr;
6971         u64 cookie;
6972         u32 duration;
6973         int err;
6974
6975         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6976             !info->attrs[NL80211_ATTR_DURATION])
6977                 return -EINVAL;
6978
6979         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
6980
6981         if (!rdev->ops->remain_on_channel ||
6982             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
6983                 return -EOPNOTSUPP;
6984
6985         /*
6986          * We should be on that channel for at least a minimum amount of
6987          * time (10ms) but no longer than the driver supports.
6988          */
6989         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
6990             duration > rdev->wiphy.max_remain_on_channel_duration)
6991                 return -EINVAL;
6992
6993         err = nl80211_parse_chandef(rdev, info, &chandef);
6994         if (err)
6995                 return err;
6996
6997         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6998         if (!msg)
6999                 return -ENOMEM;
7000
7001         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7002                              NL80211_CMD_REMAIN_ON_CHANNEL);
7003
7004         if (IS_ERR(hdr)) {
7005                 err = PTR_ERR(hdr);
7006                 goto free_msg;
7007         }
7008
7009         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7010                                      duration, &cookie);
7011
7012         if (err)
7013                 goto free_msg;
7014
7015         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7016                 goto nla_put_failure;
7017
7018         genlmsg_end(msg, hdr);
7019
7020         return genlmsg_reply(msg, info);
7021
7022  nla_put_failure:
7023         err = -ENOBUFS;
7024  free_msg:
7025         nlmsg_free(msg);
7026         return err;
7027 }
7028
7029 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7030                                             struct genl_info *info)
7031 {
7032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7033         struct wireless_dev *wdev = info->user_ptr[1];
7034         u64 cookie;
7035
7036         if (!info->attrs[NL80211_ATTR_COOKIE])
7037                 return -EINVAL;
7038
7039         if (!rdev->ops->cancel_remain_on_channel)
7040                 return -EOPNOTSUPP;
7041
7042         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7043
7044         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7045 }
7046
7047 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7048                            u8 *rates, u8 rates_len)
7049 {
7050         u8 i;
7051         u32 mask = 0;
7052
7053         for (i = 0; i < rates_len; i++) {
7054                 int rate = (rates[i] & 0x7f) * 5;
7055                 int ridx;
7056                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7057                         struct ieee80211_rate *srate =
7058                                 &sband->bitrates[ridx];
7059                         if (rate == srate->bitrate) {
7060                                 mask |= 1 << ridx;
7061                                 break;
7062                         }
7063                 }
7064                 if (ridx == sband->n_bitrates)
7065                         return 0; /* rate not found */
7066         }
7067
7068         return mask;
7069 }
7070
7071 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7072                                u8 *rates, u8 rates_len,
7073                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7074 {
7075         u8 i;
7076
7077         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7078
7079         for (i = 0; i < rates_len; i++) {
7080                 int ridx, rbit;
7081
7082                 ridx = rates[i] / 8;
7083                 rbit = BIT(rates[i] % 8);
7084
7085                 /* check validity */
7086                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7087                         return false;
7088
7089                 /* check availability */
7090                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7091                         mcs[ridx] |= rbit;
7092                 else
7093                         return false;
7094         }
7095
7096         return true;
7097 }
7098
7099 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7100         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7101                                     .len = NL80211_MAX_SUPP_RATES },
7102         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7103                                  .len = NL80211_MAX_SUPP_HT_RATES },
7104 };
7105
7106 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7107                                        struct genl_info *info)
7108 {
7109         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7110         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7111         struct cfg80211_bitrate_mask mask;
7112         int rem, i;
7113         struct net_device *dev = info->user_ptr[1];
7114         struct nlattr *tx_rates;
7115         struct ieee80211_supported_band *sband;
7116
7117         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7118                 return -EINVAL;
7119
7120         if (!rdev->ops->set_bitrate_mask)
7121                 return -EOPNOTSUPP;
7122
7123         memset(&mask, 0, sizeof(mask));
7124         /* Default to all rates enabled */
7125         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7126                 sband = rdev->wiphy.bands[i];
7127                 mask.control[i].legacy =
7128                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7129                 if (sband)
7130                         memcpy(mask.control[i].mcs,
7131                                sband->ht_cap.mcs.rx_mask,
7132                                sizeof(mask.control[i].mcs));
7133                 else
7134                         memset(mask.control[i].mcs, 0,
7135                                sizeof(mask.control[i].mcs));
7136         }
7137
7138         /*
7139          * The nested attribute uses enum nl80211_band as the index. This maps
7140          * directly to the enum ieee80211_band values used in cfg80211.
7141          */
7142         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7143         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7144         {
7145                 enum ieee80211_band band = nla_type(tx_rates);
7146                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7147                         return -EINVAL;
7148                 sband = rdev->wiphy.bands[band];
7149                 if (sband == NULL)
7150                         return -EINVAL;
7151                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7152                           nla_len(tx_rates), nl80211_txattr_policy);
7153                 if (tb[NL80211_TXRATE_LEGACY]) {
7154                         mask.control[band].legacy = rateset_to_mask(
7155                                 sband,
7156                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7157                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7158                         if ((mask.control[band].legacy == 0) &&
7159                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7160                                 return -EINVAL;
7161                 }
7162                 if (tb[NL80211_TXRATE_MCS]) {
7163                         if (!ht_rateset_to_mask(
7164                                         sband,
7165                                         nla_data(tb[NL80211_TXRATE_MCS]),
7166                                         nla_len(tb[NL80211_TXRATE_MCS]),
7167                                         mask.control[band].mcs))
7168                                 return -EINVAL;
7169                 }
7170
7171                 if (mask.control[band].legacy == 0) {
7172                         /* don't allow empty legacy rates if HT
7173                          * is not even supported. */
7174                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7175                                 return -EINVAL;
7176
7177                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7178                                 if (mask.control[band].mcs[i])
7179                                         break;
7180
7181                         /* legacy and mcs rates may not be both empty */
7182                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7183                                 return -EINVAL;
7184                 }
7185         }
7186
7187         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7188 }
7189
7190 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7191 {
7192         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7193         struct wireless_dev *wdev = info->user_ptr[1];
7194         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7195
7196         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7197                 return -EINVAL;
7198
7199         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7200                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7201
7202         switch (wdev->iftype) {
7203         case NL80211_IFTYPE_STATION:
7204         case NL80211_IFTYPE_ADHOC:
7205         case NL80211_IFTYPE_P2P_CLIENT:
7206         case NL80211_IFTYPE_AP:
7207         case NL80211_IFTYPE_AP_VLAN:
7208         case NL80211_IFTYPE_MESH_POINT:
7209         case NL80211_IFTYPE_P2P_GO:
7210         case NL80211_IFTYPE_P2P_DEVICE:
7211                 break;
7212         default:
7213                 return -EOPNOTSUPP;
7214         }
7215
7216         /* not much point in registering if we can't reply */
7217         if (!rdev->ops->mgmt_tx)
7218                 return -EOPNOTSUPP;
7219
7220         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7221                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7222                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7223 }
7224
7225 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7226 {
7227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7228         struct wireless_dev *wdev = info->user_ptr[1];
7229         struct cfg80211_chan_def chandef;
7230         int err;
7231         void *hdr = NULL;
7232         u64 cookie;
7233         struct sk_buff *msg = NULL;
7234         unsigned int wait = 0;
7235         bool offchan, no_cck, dont_wait_for_ack;
7236
7237         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7238
7239         if (!info->attrs[NL80211_ATTR_FRAME])
7240                 return -EINVAL;
7241
7242         if (!rdev->ops->mgmt_tx)
7243                 return -EOPNOTSUPP;
7244
7245         switch (wdev->iftype) {
7246         case NL80211_IFTYPE_P2P_DEVICE:
7247                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7248                         return -EINVAL;
7249         case NL80211_IFTYPE_STATION:
7250         case NL80211_IFTYPE_ADHOC:
7251         case NL80211_IFTYPE_P2P_CLIENT:
7252         case NL80211_IFTYPE_AP:
7253         case NL80211_IFTYPE_AP_VLAN:
7254         case NL80211_IFTYPE_MESH_POINT:
7255         case NL80211_IFTYPE_P2P_GO:
7256                 break;
7257         default:
7258                 return -EOPNOTSUPP;
7259         }
7260
7261         if (info->attrs[NL80211_ATTR_DURATION]) {
7262                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7263                         return -EINVAL;
7264                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7265
7266                 /*
7267                  * We should wait on the channel for at least a minimum amount
7268                  * of time (10ms) but no longer than the driver supports.
7269                  */
7270                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7271                     wait > rdev->wiphy.max_remain_on_channel_duration)
7272                         return -EINVAL;
7273
7274         }
7275
7276         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7277
7278         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7279                 return -EINVAL;
7280
7281         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7282
7283         /* get the channel if any has been specified, otherwise pass NULL to
7284          * the driver. The latter will use the current one
7285          */
7286         chandef.chan = NULL;
7287         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7288                 err = nl80211_parse_chandef(rdev, info, &chandef);
7289                 if (err)
7290                         return err;
7291         }
7292
7293         if (!chandef.chan && offchan)
7294                 return -EINVAL;
7295
7296         if (!dont_wait_for_ack) {
7297                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7298                 if (!msg)
7299                         return -ENOMEM;
7300
7301                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7302                                      NL80211_CMD_FRAME);
7303
7304                 if (IS_ERR(hdr)) {
7305                         err = PTR_ERR(hdr);
7306                         goto free_msg;
7307                 }
7308         }
7309
7310         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7311                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7312                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7313                                     no_cck, dont_wait_for_ack, &cookie);
7314         if (err)
7315                 goto free_msg;
7316
7317         if (msg) {
7318                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7319                         goto nla_put_failure;
7320
7321                 genlmsg_end(msg, hdr);
7322                 return genlmsg_reply(msg, info);
7323         }
7324
7325         return 0;
7326
7327  nla_put_failure:
7328         err = -ENOBUFS;
7329  free_msg:
7330         nlmsg_free(msg);
7331         return err;
7332 }
7333
7334 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7335 {
7336         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7337         struct wireless_dev *wdev = info->user_ptr[1];
7338         u64 cookie;
7339
7340         if (!info->attrs[NL80211_ATTR_COOKIE])
7341                 return -EINVAL;
7342
7343         if (!rdev->ops->mgmt_tx_cancel_wait)
7344                 return -EOPNOTSUPP;
7345
7346         switch (wdev->iftype) {
7347         case NL80211_IFTYPE_STATION:
7348         case NL80211_IFTYPE_ADHOC:
7349         case NL80211_IFTYPE_P2P_CLIENT:
7350         case NL80211_IFTYPE_AP:
7351         case NL80211_IFTYPE_AP_VLAN:
7352         case NL80211_IFTYPE_P2P_GO:
7353         case NL80211_IFTYPE_P2P_DEVICE:
7354                 break;
7355         default:
7356                 return -EOPNOTSUPP;
7357         }
7358
7359         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7360
7361         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7362 }
7363
7364 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7365 {
7366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7367         struct wireless_dev *wdev;
7368         struct net_device *dev = info->user_ptr[1];
7369         u8 ps_state;
7370         bool state;
7371         int err;
7372
7373         if (!info->attrs[NL80211_ATTR_PS_STATE])
7374                 return -EINVAL;
7375
7376         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7377
7378         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7379                 return -EINVAL;
7380
7381         wdev = dev->ieee80211_ptr;
7382
7383         if (!rdev->ops->set_power_mgmt)
7384                 return -EOPNOTSUPP;
7385
7386         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7387
7388         if (state == wdev->ps)
7389                 return 0;
7390
7391         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7392         if (!err)
7393                 wdev->ps = state;
7394         return err;
7395 }
7396
7397 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7398 {
7399         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7400         enum nl80211_ps_state ps_state;
7401         struct wireless_dev *wdev;
7402         struct net_device *dev = info->user_ptr[1];
7403         struct sk_buff *msg;
7404         void *hdr;
7405         int err;
7406
7407         wdev = dev->ieee80211_ptr;
7408
7409         if (!rdev->ops->set_power_mgmt)
7410                 return -EOPNOTSUPP;
7411
7412         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7413         if (!msg)
7414                 return -ENOMEM;
7415
7416         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7417                              NL80211_CMD_GET_POWER_SAVE);
7418         if (!hdr) {
7419                 err = -ENOBUFS;
7420                 goto free_msg;
7421         }
7422
7423         if (wdev->ps)
7424                 ps_state = NL80211_PS_ENABLED;
7425         else
7426                 ps_state = NL80211_PS_DISABLED;
7427
7428         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7429                 goto nla_put_failure;
7430
7431         genlmsg_end(msg, hdr);
7432         return genlmsg_reply(msg, info);
7433
7434  nla_put_failure:
7435         err = -ENOBUFS;
7436  free_msg:
7437         nlmsg_free(msg);
7438         return err;
7439 }
7440
7441 static struct nla_policy
7442 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7443         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7444         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7445         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7446         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7447         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7448         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7449 };
7450
7451 static int nl80211_set_cqm_txe(struct genl_info *info,
7452                                u32 rate, u32 pkts, u32 intvl)
7453 {
7454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7455         struct wireless_dev *wdev;
7456         struct net_device *dev = info->user_ptr[1];
7457
7458         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7459                 return -EINVAL;
7460
7461         wdev = dev->ieee80211_ptr;
7462
7463         if (!rdev->ops->set_cqm_txe_config)
7464                 return -EOPNOTSUPP;
7465
7466         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7467             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7468                 return -EOPNOTSUPP;
7469
7470         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7471 }
7472
7473 static int nl80211_set_cqm_rssi(struct genl_info *info,
7474                                 s32 threshold, u32 hysteresis)
7475 {
7476         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7477         struct wireless_dev *wdev;
7478         struct net_device *dev = info->user_ptr[1];
7479
7480         if (threshold > 0)
7481                 return -EINVAL;
7482
7483         wdev = dev->ieee80211_ptr;
7484
7485         if (!rdev->ops->set_cqm_rssi_config)
7486                 return -EOPNOTSUPP;
7487
7488         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7489             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7490                 return -EOPNOTSUPP;
7491
7492         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7493 }
7494
7495 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7496 {
7497         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7498         struct nlattr *cqm;
7499         int err;
7500
7501         cqm = info->attrs[NL80211_ATTR_CQM];
7502         if (!cqm) {
7503                 err = -EINVAL;
7504                 goto out;
7505         }
7506
7507         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7508                                nl80211_attr_cqm_policy);
7509         if (err)
7510                 goto out;
7511
7512         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7513             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7514                 s32 threshold;
7515                 u32 hysteresis;
7516                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7517                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7518                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7519         } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7520                    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7521                    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7522                 u32 rate, pkts, intvl;
7523                 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7524                 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7525                 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7526                 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7527         } else
7528                 err = -EINVAL;
7529
7530 out:
7531         return err;
7532 }
7533
7534 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7535 {
7536         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7537         struct net_device *dev = info->user_ptr[1];
7538         struct mesh_config cfg;
7539         struct mesh_setup setup;
7540         int err;
7541
7542         /* start with default */
7543         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7544         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7545
7546         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7547                 /* and parse parameters if given */
7548                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7549                 if (err)
7550                         return err;
7551         }
7552
7553         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7554             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7555                 return -EINVAL;
7556
7557         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7558         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7559
7560         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7561             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7562                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7563                         return -EINVAL;
7564
7565         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7566                 setup.beacon_interval =
7567                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7568                 if (setup.beacon_interval < 10 ||
7569                     setup.beacon_interval > 10000)
7570                         return -EINVAL;
7571         }
7572
7573         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7574                 setup.dtim_period =
7575                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7576                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7577                         return -EINVAL;
7578         }
7579
7580         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7581                 /* parse additional setup parameters if given */
7582                 err = nl80211_parse_mesh_setup(info, &setup);
7583                 if (err)
7584                         return err;
7585         }
7586
7587         if (setup.user_mpm)
7588                 cfg.auto_open_plinks = false;
7589
7590         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7591                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7592                 if (err)
7593                         return err;
7594         } else {
7595                 /* cfg80211_join_mesh() will sort it out */
7596                 setup.chandef.chan = NULL;
7597         }
7598
7599         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7600                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7601                 int n_rates =
7602                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7603                 struct ieee80211_supported_band *sband;
7604
7605                 if (!setup.chandef.chan)
7606                         return -EINVAL;
7607
7608                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7609
7610                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7611                                              &setup.basic_rates);
7612                 if (err)
7613                         return err;
7614         }
7615
7616         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7617 }
7618
7619 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7620 {
7621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7622         struct net_device *dev = info->user_ptr[1];
7623
7624         return cfg80211_leave_mesh(rdev, dev);
7625 }
7626
7627 #ifdef CONFIG_PM
7628 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7629                                         struct cfg80211_registered_device *rdev)
7630 {
7631         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7632         struct nlattr *nl_pats, *nl_pat;
7633         int i, pat_len;
7634
7635         if (!wowlan->n_patterns)
7636                 return 0;
7637
7638         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7639         if (!nl_pats)
7640                 return -ENOBUFS;
7641
7642         for (i = 0; i < wowlan->n_patterns; i++) {
7643                 nl_pat = nla_nest_start(msg, i + 1);
7644                 if (!nl_pat)
7645                         return -ENOBUFS;
7646                 pat_len = wowlan->patterns[i].pattern_len;
7647                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7648                             wowlan->patterns[i].mask) ||
7649                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7650                             wowlan->patterns[i].pattern) ||
7651                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7652                                 wowlan->patterns[i].pkt_offset))
7653                         return -ENOBUFS;
7654                 nla_nest_end(msg, nl_pat);
7655         }
7656         nla_nest_end(msg, nl_pats);
7657
7658         return 0;
7659 }
7660
7661 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7662                                    struct cfg80211_wowlan_tcp *tcp)
7663 {
7664         struct nlattr *nl_tcp;
7665
7666         if (!tcp)
7667                 return 0;
7668
7669         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7670         if (!nl_tcp)
7671                 return -ENOBUFS;
7672
7673         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7674             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7675             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7676             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7677             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7678             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7679                     tcp->payload_len, tcp->payload) ||
7680             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7681                         tcp->data_interval) ||
7682             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7683                     tcp->wake_len, tcp->wake_data) ||
7684             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7685                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7686                 return -ENOBUFS;
7687
7688         if (tcp->payload_seq.len &&
7689             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7690                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7691                 return -ENOBUFS;
7692
7693         if (tcp->payload_tok.len &&
7694             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7695                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7696                     &tcp->payload_tok))
7697                 return -ENOBUFS;
7698
7699         nla_nest_end(msg, nl_tcp);
7700
7701         return 0;
7702 }
7703
7704 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7705 {
7706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7707         struct sk_buff *msg;
7708         void *hdr;
7709         u32 size = NLMSG_DEFAULT_SIZE;
7710
7711         if (!rdev->wiphy.wowlan)
7712                 return -EOPNOTSUPP;
7713
7714         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7715                 /* adjust size to have room for all the data */
7716                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7717                         rdev->wiphy.wowlan_config->tcp->payload_len +
7718                         rdev->wiphy.wowlan_config->tcp->wake_len +
7719                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7720         }
7721
7722         msg = nlmsg_new(size, GFP_KERNEL);
7723         if (!msg)
7724                 return -ENOMEM;
7725
7726         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7727                              NL80211_CMD_GET_WOWLAN);
7728         if (!hdr)
7729                 goto nla_put_failure;
7730
7731         if (rdev->wiphy.wowlan_config) {
7732                 struct nlattr *nl_wowlan;
7733
7734                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7735                 if (!nl_wowlan)
7736                         goto nla_put_failure;
7737
7738                 if ((rdev->wiphy.wowlan_config->any &&
7739                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7740                     (rdev->wiphy.wowlan_config->disconnect &&
7741                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7742                     (rdev->wiphy.wowlan_config->magic_pkt &&
7743                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7744                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7745                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7746                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7747                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7748                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7749                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7750                     (rdev->wiphy.wowlan_config->rfkill_release &&
7751                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7752                         goto nla_put_failure;
7753
7754                 if (nl80211_send_wowlan_patterns(msg, rdev))
7755                         goto nla_put_failure;
7756
7757                 if (nl80211_send_wowlan_tcp(msg,
7758                                             rdev->wiphy.wowlan_config->tcp))
7759                         goto nla_put_failure;
7760
7761                 nla_nest_end(msg, nl_wowlan);
7762         }
7763
7764         genlmsg_end(msg, hdr);
7765         return genlmsg_reply(msg, info);
7766
7767 nla_put_failure:
7768         nlmsg_free(msg);
7769         return -ENOBUFS;
7770 }
7771
7772 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7773                                     struct nlattr *attr,
7774                                     struct cfg80211_wowlan *trig)
7775 {
7776         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7777         struct cfg80211_wowlan_tcp *cfg;
7778         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7779         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7780         u32 size;
7781         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7782         int err, port;
7783
7784         if (!rdev->wiphy.wowlan->tcp)
7785                 return -EINVAL;
7786
7787         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7788                         nla_data(attr), nla_len(attr),
7789                         nl80211_wowlan_tcp_policy);
7790         if (err)
7791                 return err;
7792
7793         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7794             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7795             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7796             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7797             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7798             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7799             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7800             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7801                 return -EINVAL;
7802
7803         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7804         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7805                 return -EINVAL;
7806
7807         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7808                         rdev->wiphy.wowlan->tcp->data_interval_max ||
7809             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7810                 return -EINVAL;
7811
7812         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7813         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7814                 return -EINVAL;
7815
7816         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7817         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7818                 return -EINVAL;
7819
7820         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7821                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7822
7823                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7824                 tokens_size = tokln - sizeof(*tok);
7825
7826                 if (!tok->len || tokens_size % tok->len)
7827                         return -EINVAL;
7828                 if (!rdev->wiphy.wowlan->tcp->tok)
7829                         return -EINVAL;
7830                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7831                         return -EINVAL;
7832                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7833                         return -EINVAL;
7834                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7835                         return -EINVAL;
7836                 if (tok->offset + tok->len > data_size)
7837                         return -EINVAL;
7838         }
7839
7840         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7841                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7842                 if (!rdev->wiphy.wowlan->tcp->seq)
7843                         return -EINVAL;
7844                 if (seq->len == 0 || seq->len > 4)
7845                         return -EINVAL;
7846                 if (seq->len + seq->offset > data_size)
7847                         return -EINVAL;
7848         }
7849
7850         size = sizeof(*cfg);
7851         size += data_size;
7852         size += wake_size + wake_mask_size;
7853         size += tokens_size;
7854
7855         cfg = kzalloc(size, GFP_KERNEL);
7856         if (!cfg)
7857                 return -ENOMEM;
7858         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7859         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7860         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7861                ETH_ALEN);
7862         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7863                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7864         else
7865                 port = 0;
7866 #ifdef CONFIG_INET
7867         /* allocate a socket and port for it and use it */
7868         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7869                             IPPROTO_TCP, &cfg->sock, 1);
7870         if (err) {
7871                 kfree(cfg);
7872                 return err;
7873         }
7874         if (inet_csk_get_port(cfg->sock->sk, port)) {
7875                 sock_release(cfg->sock);
7876                 kfree(cfg);
7877                 return -EADDRINUSE;
7878         }
7879         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7880 #else
7881         if (!port) {
7882                 kfree(cfg);
7883                 return -EINVAL;
7884         }
7885         cfg->src_port = port;
7886 #endif
7887
7888         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
7889         cfg->payload_len = data_size;
7890         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
7891         memcpy((void *)cfg->payload,
7892                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
7893                data_size);
7894         if (seq)
7895                 cfg->payload_seq = *seq;
7896         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
7897         cfg->wake_len = wake_size;
7898         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
7899         memcpy((void *)cfg->wake_data,
7900                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
7901                wake_size);
7902         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
7903                          data_size + wake_size;
7904         memcpy((void *)cfg->wake_mask,
7905                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
7906                wake_mask_size);
7907         if (tok) {
7908                 cfg->tokens_size = tokens_size;
7909                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
7910         }
7911
7912         trig->tcp = cfg;
7913
7914         return 0;
7915 }
7916
7917 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
7918 {
7919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7920         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
7921         struct cfg80211_wowlan new_triggers = {};
7922         struct cfg80211_wowlan *ntrig;
7923         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
7924         int err, i;
7925         bool prev_enabled = rdev->wiphy.wowlan_config;
7926
7927         if (!wowlan)
7928                 return -EOPNOTSUPP;
7929
7930         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
7931                 cfg80211_rdev_free_wowlan(rdev);
7932                 rdev->wiphy.wowlan_config = NULL;
7933                 goto set_wakeup;
7934         }
7935
7936         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
7937                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7938                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
7939                         nl80211_wowlan_policy);
7940         if (err)
7941                 return err;
7942
7943         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
7944                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
7945                         return -EINVAL;
7946                 new_triggers.any = true;
7947         }
7948
7949         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
7950                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
7951                         return -EINVAL;
7952                 new_triggers.disconnect = true;
7953         }
7954
7955         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
7956                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
7957                         return -EINVAL;
7958                 new_triggers.magic_pkt = true;
7959         }
7960
7961         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
7962                 return -EINVAL;
7963
7964         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
7965                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
7966                         return -EINVAL;
7967                 new_triggers.gtk_rekey_failure = true;
7968         }
7969
7970         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
7971                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
7972                         return -EINVAL;
7973                 new_triggers.eap_identity_req = true;
7974         }
7975
7976         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
7977                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
7978                         return -EINVAL;
7979                 new_triggers.four_way_handshake = true;
7980         }
7981
7982         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
7983                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
7984                         return -EINVAL;
7985                 new_triggers.rfkill_release = true;
7986         }
7987
7988         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
7989                 struct nlattr *pat;
7990                 int n_patterns = 0;
7991                 int rem, pat_len, mask_len, pkt_offset;
7992                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
7993
7994                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
7995                                     rem)
7996                         n_patterns++;
7997                 if (n_patterns > wowlan->n_patterns)
7998                         return -EINVAL;
7999
8000                 new_triggers.patterns = kcalloc(n_patterns,
8001                                                 sizeof(new_triggers.patterns[0]),
8002                                                 GFP_KERNEL);
8003                 if (!new_triggers.patterns)
8004                         return -ENOMEM;
8005
8006                 new_triggers.n_patterns = n_patterns;
8007                 i = 0;
8008
8009                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8010                                     rem) {
8011                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8012                                   nla_len(pat), NULL);
8013                         err = -EINVAL;
8014                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8015                             !pat_tb[NL80211_PKTPAT_PATTERN])
8016                                 goto error;
8017                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8018                         mask_len = DIV_ROUND_UP(pat_len, 8);
8019                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8020                                 goto error;
8021                         if (pat_len > wowlan->pattern_max_len ||
8022                             pat_len < wowlan->pattern_min_len)
8023                                 goto error;
8024
8025                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8026                                 pkt_offset = 0;
8027                         else
8028                                 pkt_offset = nla_get_u32(
8029                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8030                         if (pkt_offset > wowlan->max_pkt_offset)
8031                                 goto error;
8032                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8033
8034                         new_triggers.patterns[i].mask =
8035                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8036                         if (!new_triggers.patterns[i].mask) {
8037                                 err = -ENOMEM;
8038                                 goto error;
8039                         }
8040                         new_triggers.patterns[i].pattern =
8041                                 new_triggers.patterns[i].mask + mask_len;
8042                         memcpy(new_triggers.patterns[i].mask,
8043                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8044                                mask_len);
8045                         new_triggers.patterns[i].pattern_len = pat_len;
8046                         memcpy(new_triggers.patterns[i].pattern,
8047                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8048                                pat_len);
8049                         i++;
8050                 }
8051         }
8052
8053         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8054                 err = nl80211_parse_wowlan_tcp(
8055                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8056                         &new_triggers);
8057                 if (err)
8058                         goto error;
8059         }
8060
8061         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8062         if (!ntrig) {
8063                 err = -ENOMEM;
8064                 goto error;
8065         }
8066         cfg80211_rdev_free_wowlan(rdev);
8067         rdev->wiphy.wowlan_config = ntrig;
8068
8069  set_wakeup:
8070         if (rdev->ops->set_wakeup &&
8071             prev_enabled != !!rdev->wiphy.wowlan_config)
8072                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8073
8074         return 0;
8075  error:
8076         for (i = 0; i < new_triggers.n_patterns; i++)
8077                 kfree(new_triggers.patterns[i].mask);
8078         kfree(new_triggers.patterns);
8079         if (new_triggers.tcp && new_triggers.tcp->sock)
8080                 sock_release(new_triggers.tcp->sock);
8081         kfree(new_triggers.tcp);
8082         return err;
8083 }
8084 #endif
8085
8086 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8087                                        struct cfg80211_registered_device *rdev)
8088 {
8089         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8090         int i, j, pat_len;
8091         struct cfg80211_coalesce_rules *rule;
8092
8093         if (!rdev->coalesce->n_rules)
8094                 return 0;
8095
8096         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8097         if (!nl_rules)
8098                 return -ENOBUFS;
8099
8100         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8101                 nl_rule = nla_nest_start(msg, i + 1);
8102                 if (!nl_rule)
8103                         return -ENOBUFS;
8104
8105                 rule = &rdev->coalesce->rules[i];
8106                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8107                                 rule->delay))
8108                         return -ENOBUFS;
8109
8110                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8111                                 rule->condition))
8112                         return -ENOBUFS;
8113
8114                 nl_pats = nla_nest_start(msg,
8115                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8116                 if (!nl_pats)
8117                         return -ENOBUFS;
8118
8119                 for (j = 0; j < rule->n_patterns; j++) {
8120                         nl_pat = nla_nest_start(msg, j + 1);
8121                         if (!nl_pat)
8122                                 return -ENOBUFS;
8123                         pat_len = rule->patterns[j].pattern_len;
8124                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8125                                     DIV_ROUND_UP(pat_len, 8),
8126                                     rule->patterns[j].mask) ||
8127                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8128                                     rule->patterns[j].pattern) ||
8129                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8130                                         rule->patterns[j].pkt_offset))
8131                                 return -ENOBUFS;
8132                         nla_nest_end(msg, nl_pat);
8133                 }
8134                 nla_nest_end(msg, nl_pats);
8135                 nla_nest_end(msg, nl_rule);
8136         }
8137         nla_nest_end(msg, nl_rules);
8138
8139         return 0;
8140 }
8141
8142 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8143 {
8144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8145         struct sk_buff *msg;
8146         void *hdr;
8147
8148         if (!rdev->wiphy.coalesce)
8149                 return -EOPNOTSUPP;
8150
8151         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8152         if (!msg)
8153                 return -ENOMEM;
8154
8155         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8156                              NL80211_CMD_GET_COALESCE);
8157         if (!hdr)
8158                 goto nla_put_failure;
8159
8160         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8161                 goto nla_put_failure;
8162
8163         genlmsg_end(msg, hdr);
8164         return genlmsg_reply(msg, info);
8165
8166 nla_put_failure:
8167         nlmsg_free(msg);
8168         return -ENOBUFS;
8169 }
8170
8171 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8172 {
8173         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8174         int i, j;
8175         struct cfg80211_coalesce_rules *rule;
8176
8177         if (!coalesce)
8178                 return;
8179
8180         for (i = 0; i < coalesce->n_rules; i++) {
8181                 rule = &coalesce->rules[i];
8182                 for (j = 0; j < rule->n_patterns; j++)
8183                         kfree(rule->patterns[j].mask);
8184                 kfree(rule->patterns);
8185         }
8186         kfree(coalesce->rules);
8187         kfree(coalesce);
8188         rdev->coalesce = NULL;
8189 }
8190
8191 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8192                                        struct nlattr *rule,
8193                                        struct cfg80211_coalesce_rules *new_rule)
8194 {
8195         int err, i;
8196         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8197         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8198         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8199         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8200
8201         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8202                         nla_len(rule), nl80211_coalesce_policy);
8203         if (err)
8204                 return err;
8205
8206         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8207                 new_rule->delay =
8208                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8209         if (new_rule->delay > coalesce->max_delay)
8210                 return -EINVAL;
8211
8212         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8213                 new_rule->condition =
8214                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8215         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8216             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8217                 return -EINVAL;
8218
8219         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8220                 return -EINVAL;
8221
8222         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8223                             rem)
8224                 n_patterns++;
8225         if (n_patterns > coalesce->n_patterns)
8226                 return -EINVAL;
8227
8228         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8229                                      GFP_KERNEL);
8230         if (!new_rule->patterns)
8231                 return -ENOMEM;
8232
8233         new_rule->n_patterns = n_patterns;
8234         i = 0;
8235
8236         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8237                             rem) {
8238                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8239                           nla_len(pat), NULL);
8240                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8241                     !pat_tb[NL80211_PKTPAT_PATTERN])
8242                         return -EINVAL;
8243                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8244                 mask_len = DIV_ROUND_UP(pat_len, 8);
8245                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8246                         return -EINVAL;
8247                 if (pat_len > coalesce->pattern_max_len ||
8248                     pat_len < coalesce->pattern_min_len)
8249                         return -EINVAL;
8250
8251                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8252                         pkt_offset = 0;
8253                 else
8254                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8255                 if (pkt_offset > coalesce->max_pkt_offset)
8256                         return -EINVAL;
8257                 new_rule->patterns[i].pkt_offset = pkt_offset;
8258
8259                 new_rule->patterns[i].mask =
8260                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8261                 if (!new_rule->patterns[i].mask)
8262                         return -ENOMEM;
8263                 new_rule->patterns[i].pattern =
8264                         new_rule->patterns[i].mask + mask_len;
8265                 memcpy(new_rule->patterns[i].mask,
8266                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8267                 new_rule->patterns[i].pattern_len = pat_len;
8268                 memcpy(new_rule->patterns[i].pattern,
8269                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8270                 i++;
8271         }
8272
8273         return 0;
8274 }
8275
8276 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8277 {
8278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8279         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8280         struct cfg80211_coalesce new_coalesce = {};
8281         struct cfg80211_coalesce *n_coalesce;
8282         int err, rem_rule, n_rules = 0, i, j;
8283         struct nlattr *rule;
8284         struct cfg80211_coalesce_rules *tmp_rule;
8285
8286         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8287                 return -EOPNOTSUPP;
8288
8289         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8290                 cfg80211_rdev_free_coalesce(rdev);
8291                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8292                 return 0;
8293         }
8294
8295         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8296                             rem_rule)
8297                 n_rules++;
8298         if (n_rules > coalesce->n_rules)
8299                 return -EINVAL;
8300
8301         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8302                                      GFP_KERNEL);
8303         if (!new_coalesce.rules)
8304                 return -ENOMEM;
8305
8306         new_coalesce.n_rules = n_rules;
8307         i = 0;
8308
8309         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8310                             rem_rule) {
8311                 err = nl80211_parse_coalesce_rule(rdev, rule,
8312                                                   &new_coalesce.rules[i]);
8313                 if (err)
8314                         goto error;
8315
8316                 i++;
8317         }
8318
8319         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8320         if (err)
8321                 goto error;
8322
8323         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8324         if (!n_coalesce) {
8325                 err = -ENOMEM;
8326                 goto error;
8327         }
8328         cfg80211_rdev_free_coalesce(rdev);
8329         rdev->coalesce = n_coalesce;
8330
8331         return 0;
8332 error:
8333         for (i = 0; i < new_coalesce.n_rules; i++) {
8334                 tmp_rule = &new_coalesce.rules[i];
8335                 for (j = 0; j < tmp_rule->n_patterns; j++)
8336                         kfree(tmp_rule->patterns[j].mask);
8337                 kfree(tmp_rule->patterns);
8338         }
8339         kfree(new_coalesce.rules);
8340
8341         return err;
8342 }
8343
8344 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8345 {
8346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8347         struct net_device *dev = info->user_ptr[1];
8348         struct wireless_dev *wdev = dev->ieee80211_ptr;
8349         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8350         struct cfg80211_gtk_rekey_data rekey_data;
8351         int err;
8352
8353         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8354                 return -EINVAL;
8355
8356         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8357                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8358                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8359                         nl80211_rekey_policy);
8360         if (err)
8361                 return err;
8362
8363         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8364                 return -ERANGE;
8365         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8366                 return -ERANGE;
8367         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8368                 return -ERANGE;
8369
8370         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8371                NL80211_KEK_LEN);
8372         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8373                NL80211_KCK_LEN);
8374         memcpy(rekey_data.replay_ctr,
8375                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8376                NL80211_REPLAY_CTR_LEN);
8377
8378         wdev_lock(wdev);
8379         if (!wdev->current_bss) {
8380                 err = -ENOTCONN;
8381                 goto out;
8382         }
8383
8384         if (!rdev->ops->set_rekey_data) {
8385                 err = -EOPNOTSUPP;
8386                 goto out;
8387         }
8388
8389         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8390  out:
8391         wdev_unlock(wdev);
8392         return err;
8393 }
8394
8395 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8396                                              struct genl_info *info)
8397 {
8398         struct net_device *dev = info->user_ptr[1];
8399         struct wireless_dev *wdev = dev->ieee80211_ptr;
8400
8401         if (wdev->iftype != NL80211_IFTYPE_AP &&
8402             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8403                 return -EINVAL;
8404
8405         if (wdev->ap_unexpected_nlportid)
8406                 return -EBUSY;
8407
8408         wdev->ap_unexpected_nlportid = info->snd_portid;
8409         return 0;
8410 }
8411
8412 static int nl80211_probe_client(struct sk_buff *skb,
8413                                 struct genl_info *info)
8414 {
8415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8416         struct net_device *dev = info->user_ptr[1];
8417         struct wireless_dev *wdev = dev->ieee80211_ptr;
8418         struct sk_buff *msg;
8419         void *hdr;
8420         const u8 *addr;
8421         u64 cookie;
8422         int err;
8423
8424         if (wdev->iftype != NL80211_IFTYPE_AP &&
8425             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8426                 return -EOPNOTSUPP;
8427
8428         if (!info->attrs[NL80211_ATTR_MAC])
8429                 return -EINVAL;
8430
8431         if (!rdev->ops->probe_client)
8432                 return -EOPNOTSUPP;
8433
8434         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8435         if (!msg)
8436                 return -ENOMEM;
8437
8438         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8439                              NL80211_CMD_PROBE_CLIENT);
8440
8441         if (IS_ERR(hdr)) {
8442                 err = PTR_ERR(hdr);
8443                 goto free_msg;
8444         }
8445
8446         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8447
8448         err = rdev_probe_client(rdev, dev, addr, &cookie);
8449         if (err)
8450                 goto free_msg;
8451
8452         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8453                 goto nla_put_failure;
8454
8455         genlmsg_end(msg, hdr);
8456
8457         return genlmsg_reply(msg, info);
8458
8459  nla_put_failure:
8460         err = -ENOBUFS;
8461  free_msg:
8462         nlmsg_free(msg);
8463         return err;
8464 }
8465
8466 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8467 {
8468         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8469         struct cfg80211_beacon_registration *reg, *nreg;
8470         int rv;
8471
8472         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8473                 return -EOPNOTSUPP;
8474
8475         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8476         if (!nreg)
8477                 return -ENOMEM;
8478
8479         /* First, check if already registered. */
8480         spin_lock_bh(&rdev->beacon_registrations_lock);
8481         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8482                 if (reg->nlportid == info->snd_portid) {
8483                         rv = -EALREADY;
8484                         goto out_err;
8485                 }
8486         }
8487         /* Add it to the list */
8488         nreg->nlportid = info->snd_portid;
8489         list_add(&nreg->list, &rdev->beacon_registrations);
8490
8491         spin_unlock_bh(&rdev->beacon_registrations_lock);
8492
8493         return 0;
8494 out_err:
8495         spin_unlock_bh(&rdev->beacon_registrations_lock);
8496         kfree(nreg);
8497         return rv;
8498 }
8499
8500 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8501 {
8502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8503         struct wireless_dev *wdev = info->user_ptr[1];
8504         int err;
8505
8506         if (!rdev->ops->start_p2p_device)
8507                 return -EOPNOTSUPP;
8508
8509         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8510                 return -EOPNOTSUPP;
8511
8512         if (wdev->p2p_started)
8513                 return 0;
8514
8515         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8516         if (err)
8517                 return err;
8518
8519         err = rdev_start_p2p_device(rdev, wdev);
8520         if (err)
8521                 return err;
8522
8523         wdev->p2p_started = true;
8524         rdev->opencount++;
8525
8526         return 0;
8527 }
8528
8529 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8530 {
8531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8532         struct wireless_dev *wdev = info->user_ptr[1];
8533
8534         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8535                 return -EOPNOTSUPP;
8536
8537         if (!rdev->ops->stop_p2p_device)
8538                 return -EOPNOTSUPP;
8539
8540         cfg80211_stop_p2p_device(rdev, wdev);
8541
8542         return 0;
8543 }
8544
8545 static int nl80211_get_protocol_features(struct sk_buff *skb,
8546                                          struct genl_info *info)
8547 {
8548         void *hdr;
8549         struct sk_buff *msg;
8550
8551         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8552         if (!msg)
8553                 return -ENOMEM;
8554
8555         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8556                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8557         if (!hdr)
8558                 goto nla_put_failure;
8559
8560         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8561                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8562                 goto nla_put_failure;
8563
8564         genlmsg_end(msg, hdr);
8565         return genlmsg_reply(msg, info);
8566
8567  nla_put_failure:
8568         kfree_skb(msg);
8569         return -ENOBUFS;
8570 }
8571
8572 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8573 {
8574         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8575         struct cfg80211_update_ft_ies_params ft_params;
8576         struct net_device *dev = info->user_ptr[1];
8577
8578         if (!rdev->ops->update_ft_ies)
8579                 return -EOPNOTSUPP;
8580
8581         if (!info->attrs[NL80211_ATTR_MDID] ||
8582             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8583                 return -EINVAL;
8584
8585         memset(&ft_params, 0, sizeof(ft_params));
8586         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8587         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8588         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8589
8590         return rdev_update_ft_ies(rdev, dev, &ft_params);
8591 }
8592
8593 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8594                                        struct genl_info *info)
8595 {
8596         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8597         struct wireless_dev *wdev = info->user_ptr[1];
8598         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8599         u16 duration;
8600         int ret;
8601
8602         if (!rdev->ops->crit_proto_start)
8603                 return -EOPNOTSUPP;
8604
8605         if (WARN_ON(!rdev->ops->crit_proto_stop))
8606                 return -EINVAL;
8607
8608         if (rdev->crit_proto_nlportid)
8609                 return -EBUSY;
8610
8611         /* determine protocol if provided */
8612         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8613                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8614
8615         if (proto >= NUM_NL80211_CRIT_PROTO)
8616                 return -EINVAL;
8617
8618         /* timeout must be provided */
8619         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8620                 return -EINVAL;
8621
8622         duration =
8623                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8624
8625         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8626                 return -ERANGE;
8627
8628         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8629         if (!ret)
8630                 rdev->crit_proto_nlportid = info->snd_portid;
8631
8632         return ret;
8633 }
8634
8635 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8636                                       struct genl_info *info)
8637 {
8638         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8639         struct wireless_dev *wdev = info->user_ptr[1];
8640
8641         if (!rdev->ops->crit_proto_stop)
8642                 return -EOPNOTSUPP;
8643
8644         if (rdev->crit_proto_nlportid) {
8645                 rdev->crit_proto_nlportid = 0;
8646                 rdev_crit_proto_stop(rdev, wdev);
8647         }
8648         return 0;
8649 }
8650
8651 #define NL80211_FLAG_NEED_WIPHY         0x01
8652 #define NL80211_FLAG_NEED_NETDEV        0x02
8653 #define NL80211_FLAG_NEED_RTNL          0x04
8654 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8655 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8656                                          NL80211_FLAG_CHECK_NETDEV_UP)
8657 #define NL80211_FLAG_NEED_WDEV          0x10
8658 /* If a netdev is associated, it must be UP, P2P must be started */
8659 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8660                                          NL80211_FLAG_CHECK_NETDEV_UP)
8661
8662 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8663                             struct genl_info *info)
8664 {
8665         struct cfg80211_registered_device *rdev;
8666         struct wireless_dev *wdev;
8667         struct net_device *dev;
8668         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8669
8670         if (rtnl)
8671                 rtnl_lock();
8672
8673         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8674                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8675                 if (IS_ERR(rdev)) {
8676                         if (rtnl)
8677                                 rtnl_unlock();
8678                         return PTR_ERR(rdev);
8679                 }
8680                 info->user_ptr[0] = rdev;
8681         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8682                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8683                 ASSERT_RTNL();
8684
8685                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8686                                                   info->attrs);
8687                 if (IS_ERR(wdev)) {
8688                         if (rtnl)
8689                                 rtnl_unlock();
8690                         return PTR_ERR(wdev);
8691                 }
8692
8693                 dev = wdev->netdev;
8694                 rdev = wiphy_to_dev(wdev->wiphy);
8695
8696                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8697                         if (!dev) {
8698                                 if (rtnl)
8699                                         rtnl_unlock();
8700                                 return -EINVAL;
8701                         }
8702
8703                         info->user_ptr[1] = dev;
8704                 } else {
8705                         info->user_ptr[1] = wdev;
8706                 }
8707
8708                 if (dev) {
8709                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8710                             !netif_running(dev)) {
8711                                 if (rtnl)
8712                                         rtnl_unlock();
8713                                 return -ENETDOWN;
8714                         }
8715
8716                         dev_hold(dev);
8717                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8718                         if (!wdev->p2p_started) {
8719                                 if (rtnl)
8720                                         rtnl_unlock();
8721                                 return -ENETDOWN;
8722                         }
8723                 }
8724
8725                 info->user_ptr[0] = rdev;
8726         }
8727
8728         return 0;
8729 }
8730
8731 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8732                               struct genl_info *info)
8733 {
8734         if (info->user_ptr[1]) {
8735                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8736                         struct wireless_dev *wdev = info->user_ptr[1];
8737
8738                         if (wdev->netdev)
8739                                 dev_put(wdev->netdev);
8740                 } else {
8741                         dev_put(info->user_ptr[1]);
8742                 }
8743         }
8744         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8745                 rtnl_unlock();
8746 }
8747
8748 static struct genl_ops nl80211_ops[] = {
8749         {
8750                 .cmd = NL80211_CMD_GET_WIPHY,
8751                 .doit = nl80211_get_wiphy,
8752                 .dumpit = nl80211_dump_wiphy,
8753                 .done = nl80211_dump_wiphy_done,
8754                 .policy = nl80211_policy,
8755                 /* can be retrieved by unprivileged users */
8756                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8757                                   NL80211_FLAG_NEED_RTNL,
8758         },
8759         {
8760                 .cmd = NL80211_CMD_SET_WIPHY,
8761                 .doit = nl80211_set_wiphy,
8762                 .policy = nl80211_policy,
8763                 .flags = GENL_ADMIN_PERM,
8764                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8765         },
8766         {
8767                 .cmd = NL80211_CMD_GET_INTERFACE,
8768                 .doit = nl80211_get_interface,
8769                 .dumpit = nl80211_dump_interface,
8770                 .policy = nl80211_policy,
8771                 /* can be retrieved by unprivileged users */
8772                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8773                                   NL80211_FLAG_NEED_RTNL,
8774         },
8775         {
8776                 .cmd = NL80211_CMD_SET_INTERFACE,
8777                 .doit = nl80211_set_interface,
8778                 .policy = nl80211_policy,
8779                 .flags = GENL_ADMIN_PERM,
8780                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8781                                   NL80211_FLAG_NEED_RTNL,
8782         },
8783         {
8784                 .cmd = NL80211_CMD_NEW_INTERFACE,
8785                 .doit = nl80211_new_interface,
8786                 .policy = nl80211_policy,
8787                 .flags = GENL_ADMIN_PERM,
8788                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8789                                   NL80211_FLAG_NEED_RTNL,
8790         },
8791         {
8792                 .cmd = NL80211_CMD_DEL_INTERFACE,
8793                 .doit = nl80211_del_interface,
8794                 .policy = nl80211_policy,
8795                 .flags = GENL_ADMIN_PERM,
8796                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8797                                   NL80211_FLAG_NEED_RTNL,
8798         },
8799         {
8800                 .cmd = NL80211_CMD_GET_KEY,
8801                 .doit = nl80211_get_key,
8802                 .policy = nl80211_policy,
8803                 .flags = GENL_ADMIN_PERM,
8804                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8805                                   NL80211_FLAG_NEED_RTNL,
8806         },
8807         {
8808                 .cmd = NL80211_CMD_SET_KEY,
8809                 .doit = nl80211_set_key,
8810                 .policy = nl80211_policy,
8811                 .flags = GENL_ADMIN_PERM,
8812                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8813                                   NL80211_FLAG_NEED_RTNL,
8814         },
8815         {
8816                 .cmd = NL80211_CMD_NEW_KEY,
8817                 .doit = nl80211_new_key,
8818                 .policy = nl80211_policy,
8819                 .flags = GENL_ADMIN_PERM,
8820                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8821                                   NL80211_FLAG_NEED_RTNL,
8822         },
8823         {
8824                 .cmd = NL80211_CMD_DEL_KEY,
8825                 .doit = nl80211_del_key,
8826                 .policy = nl80211_policy,
8827                 .flags = GENL_ADMIN_PERM,
8828                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8829                                   NL80211_FLAG_NEED_RTNL,
8830         },
8831         {
8832                 .cmd = NL80211_CMD_SET_BEACON,
8833                 .policy = nl80211_policy,
8834                 .flags = GENL_ADMIN_PERM,
8835                 .doit = nl80211_set_beacon,
8836                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8837                                   NL80211_FLAG_NEED_RTNL,
8838         },
8839         {
8840                 .cmd = NL80211_CMD_START_AP,
8841                 .policy = nl80211_policy,
8842                 .flags = GENL_ADMIN_PERM,
8843                 .doit = nl80211_start_ap,
8844                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8845                                   NL80211_FLAG_NEED_RTNL,
8846         },
8847         {
8848                 .cmd = NL80211_CMD_STOP_AP,
8849                 .policy = nl80211_policy,
8850                 .flags = GENL_ADMIN_PERM,
8851                 .doit = nl80211_stop_ap,
8852                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8853                                   NL80211_FLAG_NEED_RTNL,
8854         },
8855         {
8856                 .cmd = NL80211_CMD_GET_STATION,
8857                 .doit = nl80211_get_station,
8858                 .dumpit = nl80211_dump_station,
8859                 .policy = nl80211_policy,
8860                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8861                                   NL80211_FLAG_NEED_RTNL,
8862         },
8863         {
8864                 .cmd = NL80211_CMD_SET_STATION,
8865                 .doit = nl80211_set_station,
8866                 .policy = nl80211_policy,
8867                 .flags = GENL_ADMIN_PERM,
8868                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8869                                   NL80211_FLAG_NEED_RTNL,
8870         },
8871         {
8872                 .cmd = NL80211_CMD_NEW_STATION,
8873                 .doit = nl80211_new_station,
8874                 .policy = nl80211_policy,
8875                 .flags = GENL_ADMIN_PERM,
8876                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8877                                   NL80211_FLAG_NEED_RTNL,
8878         },
8879         {
8880                 .cmd = NL80211_CMD_DEL_STATION,
8881                 .doit = nl80211_del_station,
8882                 .policy = nl80211_policy,
8883                 .flags = GENL_ADMIN_PERM,
8884                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8885                                   NL80211_FLAG_NEED_RTNL,
8886         },
8887         {
8888                 .cmd = NL80211_CMD_GET_MPATH,
8889                 .doit = nl80211_get_mpath,
8890                 .dumpit = nl80211_dump_mpath,
8891                 .policy = nl80211_policy,
8892                 .flags = GENL_ADMIN_PERM,
8893                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8894                                   NL80211_FLAG_NEED_RTNL,
8895         },
8896         {
8897                 .cmd = NL80211_CMD_SET_MPATH,
8898                 .doit = nl80211_set_mpath,
8899                 .policy = nl80211_policy,
8900                 .flags = GENL_ADMIN_PERM,
8901                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8902                                   NL80211_FLAG_NEED_RTNL,
8903         },
8904         {
8905                 .cmd = NL80211_CMD_NEW_MPATH,
8906                 .doit = nl80211_new_mpath,
8907                 .policy = nl80211_policy,
8908                 .flags = GENL_ADMIN_PERM,
8909                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8910                                   NL80211_FLAG_NEED_RTNL,
8911         },
8912         {
8913                 .cmd = NL80211_CMD_DEL_MPATH,
8914                 .doit = nl80211_del_mpath,
8915                 .policy = nl80211_policy,
8916                 .flags = GENL_ADMIN_PERM,
8917                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8918                                   NL80211_FLAG_NEED_RTNL,
8919         },
8920         {
8921                 .cmd = NL80211_CMD_SET_BSS,
8922                 .doit = nl80211_set_bss,
8923                 .policy = nl80211_policy,
8924                 .flags = GENL_ADMIN_PERM,
8925                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8926                                   NL80211_FLAG_NEED_RTNL,
8927         },
8928         {
8929                 .cmd = NL80211_CMD_GET_REG,
8930                 .doit = nl80211_get_reg,
8931                 .policy = nl80211_policy,
8932                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8933                 /* can be retrieved by unprivileged users */
8934         },
8935         {
8936                 .cmd = NL80211_CMD_SET_REG,
8937                 .doit = nl80211_set_reg,
8938                 .policy = nl80211_policy,
8939                 .flags = GENL_ADMIN_PERM,
8940                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8941         },
8942         {
8943                 .cmd = NL80211_CMD_REQ_SET_REG,
8944                 .doit = nl80211_req_set_reg,
8945                 .policy = nl80211_policy,
8946                 .flags = GENL_ADMIN_PERM,
8947         },
8948         {
8949                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
8950                 .doit = nl80211_get_mesh_config,
8951                 .policy = nl80211_policy,
8952                 /* can be retrieved by unprivileged users */
8953                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8954                                   NL80211_FLAG_NEED_RTNL,
8955         },
8956         {
8957                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
8958                 .doit = nl80211_update_mesh_config,
8959                 .policy = nl80211_policy,
8960                 .flags = GENL_ADMIN_PERM,
8961                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8962                                   NL80211_FLAG_NEED_RTNL,
8963         },
8964         {
8965                 .cmd = NL80211_CMD_TRIGGER_SCAN,
8966                 .doit = nl80211_trigger_scan,
8967                 .policy = nl80211_policy,
8968                 .flags = GENL_ADMIN_PERM,
8969                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
8970                                   NL80211_FLAG_NEED_RTNL,
8971         },
8972         {
8973                 .cmd = NL80211_CMD_GET_SCAN,
8974                 .policy = nl80211_policy,
8975                 .dumpit = nl80211_dump_scan,
8976         },
8977         {
8978                 .cmd = NL80211_CMD_START_SCHED_SCAN,
8979                 .doit = nl80211_start_sched_scan,
8980                 .policy = nl80211_policy,
8981                 .flags = GENL_ADMIN_PERM,
8982                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8983                                   NL80211_FLAG_NEED_RTNL,
8984         },
8985         {
8986                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
8987                 .doit = nl80211_stop_sched_scan,
8988                 .policy = nl80211_policy,
8989                 .flags = GENL_ADMIN_PERM,
8990                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8991                                   NL80211_FLAG_NEED_RTNL,
8992         },
8993         {
8994                 .cmd = NL80211_CMD_AUTHENTICATE,
8995                 .doit = nl80211_authenticate,
8996                 .policy = nl80211_policy,
8997                 .flags = GENL_ADMIN_PERM,
8998                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8999                                   NL80211_FLAG_NEED_RTNL,
9000         },
9001         {
9002                 .cmd = NL80211_CMD_ASSOCIATE,
9003                 .doit = nl80211_associate,
9004                 .policy = nl80211_policy,
9005                 .flags = GENL_ADMIN_PERM,
9006                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9007                                   NL80211_FLAG_NEED_RTNL,
9008         },
9009         {
9010                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9011                 .doit = nl80211_deauthenticate,
9012                 .policy = nl80211_policy,
9013                 .flags = GENL_ADMIN_PERM,
9014                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9015                                   NL80211_FLAG_NEED_RTNL,
9016         },
9017         {
9018                 .cmd = NL80211_CMD_DISASSOCIATE,
9019                 .doit = nl80211_disassociate,
9020                 .policy = nl80211_policy,
9021                 .flags = GENL_ADMIN_PERM,
9022                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9023                                   NL80211_FLAG_NEED_RTNL,
9024         },
9025         {
9026                 .cmd = NL80211_CMD_JOIN_IBSS,
9027                 .doit = nl80211_join_ibss,
9028                 .policy = nl80211_policy,
9029                 .flags = GENL_ADMIN_PERM,
9030                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9031                                   NL80211_FLAG_NEED_RTNL,
9032         },
9033         {
9034                 .cmd = NL80211_CMD_LEAVE_IBSS,
9035                 .doit = nl80211_leave_ibss,
9036                 .policy = nl80211_policy,
9037                 .flags = GENL_ADMIN_PERM,
9038                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9039                                   NL80211_FLAG_NEED_RTNL,
9040         },
9041 #ifdef CONFIG_NL80211_TESTMODE
9042         {
9043                 .cmd = NL80211_CMD_TESTMODE,
9044                 .doit = nl80211_testmode_do,
9045                 .dumpit = nl80211_testmode_dump,
9046                 .policy = nl80211_policy,
9047                 .flags = GENL_ADMIN_PERM,
9048                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9049                                   NL80211_FLAG_NEED_RTNL,
9050         },
9051 #endif
9052         {
9053                 .cmd = NL80211_CMD_CONNECT,
9054                 .doit = nl80211_connect,
9055                 .policy = nl80211_policy,
9056                 .flags = GENL_ADMIN_PERM,
9057                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9058                                   NL80211_FLAG_NEED_RTNL,
9059         },
9060         {
9061                 .cmd = NL80211_CMD_DISCONNECT,
9062                 .doit = nl80211_disconnect,
9063                 .policy = nl80211_policy,
9064                 .flags = GENL_ADMIN_PERM,
9065                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9066                                   NL80211_FLAG_NEED_RTNL,
9067         },
9068         {
9069                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9070                 .doit = nl80211_wiphy_netns,
9071                 .policy = nl80211_policy,
9072                 .flags = GENL_ADMIN_PERM,
9073                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9074                                   NL80211_FLAG_NEED_RTNL,
9075         },
9076         {
9077                 .cmd = NL80211_CMD_GET_SURVEY,
9078                 .policy = nl80211_policy,
9079                 .dumpit = nl80211_dump_survey,
9080         },
9081         {
9082                 .cmd = NL80211_CMD_SET_PMKSA,
9083                 .doit = nl80211_setdel_pmksa,
9084                 .policy = nl80211_policy,
9085                 .flags = GENL_ADMIN_PERM,
9086                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9087                                   NL80211_FLAG_NEED_RTNL,
9088         },
9089         {
9090                 .cmd = NL80211_CMD_DEL_PMKSA,
9091                 .doit = nl80211_setdel_pmksa,
9092                 .policy = nl80211_policy,
9093                 .flags = GENL_ADMIN_PERM,
9094                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9095                                   NL80211_FLAG_NEED_RTNL,
9096         },
9097         {
9098                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9099                 .doit = nl80211_flush_pmksa,
9100                 .policy = nl80211_policy,
9101                 .flags = GENL_ADMIN_PERM,
9102                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9103                                   NL80211_FLAG_NEED_RTNL,
9104         },
9105         {
9106                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9107                 .doit = nl80211_remain_on_channel,
9108                 .policy = nl80211_policy,
9109                 .flags = GENL_ADMIN_PERM,
9110                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9111                                   NL80211_FLAG_NEED_RTNL,
9112         },
9113         {
9114                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9115                 .doit = nl80211_cancel_remain_on_channel,
9116                 .policy = nl80211_policy,
9117                 .flags = GENL_ADMIN_PERM,
9118                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9119                                   NL80211_FLAG_NEED_RTNL,
9120         },
9121         {
9122                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9123                 .doit = nl80211_set_tx_bitrate_mask,
9124                 .policy = nl80211_policy,
9125                 .flags = GENL_ADMIN_PERM,
9126                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9127                                   NL80211_FLAG_NEED_RTNL,
9128         },
9129         {
9130                 .cmd = NL80211_CMD_REGISTER_FRAME,
9131                 .doit = nl80211_register_mgmt,
9132                 .policy = nl80211_policy,
9133                 .flags = GENL_ADMIN_PERM,
9134                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9135                                   NL80211_FLAG_NEED_RTNL,
9136         },
9137         {
9138                 .cmd = NL80211_CMD_FRAME,
9139                 .doit = nl80211_tx_mgmt,
9140                 .policy = nl80211_policy,
9141                 .flags = GENL_ADMIN_PERM,
9142                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9143                                   NL80211_FLAG_NEED_RTNL,
9144         },
9145         {
9146                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9147                 .doit = nl80211_tx_mgmt_cancel_wait,
9148                 .policy = nl80211_policy,
9149                 .flags = GENL_ADMIN_PERM,
9150                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9151                                   NL80211_FLAG_NEED_RTNL,
9152         },
9153         {
9154                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9155                 .doit = nl80211_set_power_save,
9156                 .policy = nl80211_policy,
9157                 .flags = GENL_ADMIN_PERM,
9158                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9159                                   NL80211_FLAG_NEED_RTNL,
9160         },
9161         {
9162                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9163                 .doit = nl80211_get_power_save,
9164                 .policy = nl80211_policy,
9165                 /* can be retrieved by unprivileged users */
9166                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9167                                   NL80211_FLAG_NEED_RTNL,
9168         },
9169         {
9170                 .cmd = NL80211_CMD_SET_CQM,
9171                 .doit = nl80211_set_cqm,
9172                 .policy = nl80211_policy,
9173                 .flags = GENL_ADMIN_PERM,
9174                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9175                                   NL80211_FLAG_NEED_RTNL,
9176         },
9177         {
9178                 .cmd = NL80211_CMD_SET_CHANNEL,
9179                 .doit = nl80211_set_channel,
9180                 .policy = nl80211_policy,
9181                 .flags = GENL_ADMIN_PERM,
9182                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9183                                   NL80211_FLAG_NEED_RTNL,
9184         },
9185         {
9186                 .cmd = NL80211_CMD_SET_WDS_PEER,
9187                 .doit = nl80211_set_wds_peer,
9188                 .policy = nl80211_policy,
9189                 .flags = GENL_ADMIN_PERM,
9190                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9191                                   NL80211_FLAG_NEED_RTNL,
9192         },
9193         {
9194                 .cmd = NL80211_CMD_JOIN_MESH,
9195                 .doit = nl80211_join_mesh,
9196                 .policy = nl80211_policy,
9197                 .flags = GENL_ADMIN_PERM,
9198                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9199                                   NL80211_FLAG_NEED_RTNL,
9200         },
9201         {
9202                 .cmd = NL80211_CMD_LEAVE_MESH,
9203                 .doit = nl80211_leave_mesh,
9204                 .policy = nl80211_policy,
9205                 .flags = GENL_ADMIN_PERM,
9206                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9207                                   NL80211_FLAG_NEED_RTNL,
9208         },
9209 #ifdef CONFIG_PM
9210         {
9211                 .cmd = NL80211_CMD_GET_WOWLAN,
9212                 .doit = nl80211_get_wowlan,
9213                 .policy = nl80211_policy,
9214                 /* can be retrieved by unprivileged users */
9215                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9216                                   NL80211_FLAG_NEED_RTNL,
9217         },
9218         {
9219                 .cmd = NL80211_CMD_SET_WOWLAN,
9220                 .doit = nl80211_set_wowlan,
9221                 .policy = nl80211_policy,
9222                 .flags = GENL_ADMIN_PERM,
9223                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9224                                   NL80211_FLAG_NEED_RTNL,
9225         },
9226 #endif
9227         {
9228                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9229                 .doit = nl80211_set_rekey_data,
9230                 .policy = nl80211_policy,
9231                 .flags = GENL_ADMIN_PERM,
9232                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9233                                   NL80211_FLAG_NEED_RTNL,
9234         },
9235         {
9236                 .cmd = NL80211_CMD_TDLS_MGMT,
9237                 .doit = nl80211_tdls_mgmt,
9238                 .policy = nl80211_policy,
9239                 .flags = GENL_ADMIN_PERM,
9240                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9241                                   NL80211_FLAG_NEED_RTNL,
9242         },
9243         {
9244                 .cmd = NL80211_CMD_TDLS_OPER,
9245                 .doit = nl80211_tdls_oper,
9246                 .policy = nl80211_policy,
9247                 .flags = GENL_ADMIN_PERM,
9248                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9249                                   NL80211_FLAG_NEED_RTNL,
9250         },
9251         {
9252                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9253                 .doit = nl80211_register_unexpected_frame,
9254                 .policy = nl80211_policy,
9255                 .flags = GENL_ADMIN_PERM,
9256                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9257                                   NL80211_FLAG_NEED_RTNL,
9258         },
9259         {
9260                 .cmd = NL80211_CMD_PROBE_CLIENT,
9261                 .doit = nl80211_probe_client,
9262                 .policy = nl80211_policy,
9263                 .flags = GENL_ADMIN_PERM,
9264                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9265                                   NL80211_FLAG_NEED_RTNL,
9266         },
9267         {
9268                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9269                 .doit = nl80211_register_beacons,
9270                 .policy = nl80211_policy,
9271                 .flags = GENL_ADMIN_PERM,
9272                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9273                                   NL80211_FLAG_NEED_RTNL,
9274         },
9275         {
9276                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9277                 .doit = nl80211_set_noack_map,
9278                 .policy = nl80211_policy,
9279                 .flags = GENL_ADMIN_PERM,
9280                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9281                                   NL80211_FLAG_NEED_RTNL,
9282         },
9283         {
9284                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9285                 .doit = nl80211_start_p2p_device,
9286                 .policy = nl80211_policy,
9287                 .flags = GENL_ADMIN_PERM,
9288                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9289                                   NL80211_FLAG_NEED_RTNL,
9290         },
9291         {
9292                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9293                 .doit = nl80211_stop_p2p_device,
9294                 .policy = nl80211_policy,
9295                 .flags = GENL_ADMIN_PERM,
9296                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9297                                   NL80211_FLAG_NEED_RTNL,
9298         },
9299         {
9300                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9301                 .doit = nl80211_set_mcast_rate,
9302                 .policy = nl80211_policy,
9303                 .flags = GENL_ADMIN_PERM,
9304                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9305                                   NL80211_FLAG_NEED_RTNL,
9306         },
9307         {
9308                 .cmd = NL80211_CMD_SET_MAC_ACL,
9309                 .doit = nl80211_set_mac_acl,
9310                 .policy = nl80211_policy,
9311                 .flags = GENL_ADMIN_PERM,
9312                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9313                                   NL80211_FLAG_NEED_RTNL,
9314         },
9315         {
9316                 .cmd = NL80211_CMD_RADAR_DETECT,
9317                 .doit = nl80211_start_radar_detection,
9318                 .policy = nl80211_policy,
9319                 .flags = GENL_ADMIN_PERM,
9320                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9321                                   NL80211_FLAG_NEED_RTNL,
9322         },
9323         {
9324                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9325                 .doit = nl80211_get_protocol_features,
9326                 .policy = nl80211_policy,
9327         },
9328         {
9329                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9330                 .doit = nl80211_update_ft_ies,
9331                 .policy = nl80211_policy,
9332                 .flags = GENL_ADMIN_PERM,
9333                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9334                                   NL80211_FLAG_NEED_RTNL,
9335         },
9336         {
9337                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9338                 .doit = nl80211_crit_protocol_start,
9339                 .policy = nl80211_policy,
9340                 .flags = GENL_ADMIN_PERM,
9341                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9342                                   NL80211_FLAG_NEED_RTNL,
9343         },
9344         {
9345                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9346                 .doit = nl80211_crit_protocol_stop,
9347                 .policy = nl80211_policy,
9348                 .flags = GENL_ADMIN_PERM,
9349                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9350                                   NL80211_FLAG_NEED_RTNL,
9351         },
9352         {
9353                 .cmd = NL80211_CMD_GET_COALESCE,
9354                 .doit = nl80211_get_coalesce,
9355                 .policy = nl80211_policy,
9356                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9357                                   NL80211_FLAG_NEED_RTNL,
9358         },
9359         {
9360                 .cmd = NL80211_CMD_SET_COALESCE,
9361                 .doit = nl80211_set_coalesce,
9362                 .policy = nl80211_policy,
9363                 .flags = GENL_ADMIN_PERM,
9364                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9365                                   NL80211_FLAG_NEED_RTNL,
9366         }
9367 };
9368
9369 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9370         .name = "mlme",
9371 };
9372
9373 /* multicast groups */
9374 static struct genl_multicast_group nl80211_config_mcgrp = {
9375         .name = "config",
9376 };
9377 static struct genl_multicast_group nl80211_scan_mcgrp = {
9378         .name = "scan",
9379 };
9380 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9381         .name = "regulatory",
9382 };
9383
9384 /* notification functions */
9385
9386 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9387 {
9388         struct sk_buff *msg;
9389         struct nl80211_dump_wiphy_state state = {};
9390
9391         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9392         if (!msg)
9393                 return;
9394
9395         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9396                 nlmsg_free(msg);
9397                 return;
9398         }
9399
9400         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9401                                 nl80211_config_mcgrp.id, GFP_KERNEL);
9402 }
9403
9404 static int nl80211_add_scan_req(struct sk_buff *msg,
9405                                 struct cfg80211_registered_device *rdev)
9406 {
9407         struct cfg80211_scan_request *req = rdev->scan_req;
9408         struct nlattr *nest;
9409         int i;
9410
9411         if (WARN_ON(!req))
9412                 return 0;
9413
9414         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9415         if (!nest)
9416                 goto nla_put_failure;
9417         for (i = 0; i < req->n_ssids; i++) {
9418                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9419                         goto nla_put_failure;
9420         }
9421         nla_nest_end(msg, nest);
9422
9423         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9424         if (!nest)
9425                 goto nla_put_failure;
9426         for (i = 0; i < req->n_channels; i++) {
9427                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9428                         goto nla_put_failure;
9429         }
9430         nla_nest_end(msg, nest);
9431
9432         if (req->ie &&
9433             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9434                 goto nla_put_failure;
9435
9436         if (req->flags)
9437                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9438
9439         return 0;
9440  nla_put_failure:
9441         return -ENOBUFS;
9442 }
9443
9444 static int nl80211_send_scan_msg(struct sk_buff *msg,
9445                                  struct cfg80211_registered_device *rdev,
9446                                  struct wireless_dev *wdev,
9447                                  u32 portid, u32 seq, int flags,
9448                                  u32 cmd)
9449 {
9450         void *hdr;
9451
9452         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9453         if (!hdr)
9454                 return -1;
9455
9456         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9457             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9458                                          wdev->netdev->ifindex)) ||
9459             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9460                 goto nla_put_failure;
9461
9462         /* ignore errors and send incomplete event anyway */
9463         nl80211_add_scan_req(msg, rdev);
9464
9465         return genlmsg_end(msg, hdr);
9466
9467  nla_put_failure:
9468         genlmsg_cancel(msg, hdr);
9469         return -EMSGSIZE;
9470 }
9471
9472 static int
9473 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9474                             struct cfg80211_registered_device *rdev,
9475                             struct net_device *netdev,
9476                             u32 portid, u32 seq, int flags, u32 cmd)
9477 {
9478         void *hdr;
9479
9480         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9481         if (!hdr)
9482                 return -1;
9483
9484         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9485             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9486                 goto nla_put_failure;
9487
9488         return genlmsg_end(msg, hdr);
9489
9490  nla_put_failure:
9491         genlmsg_cancel(msg, hdr);
9492         return -EMSGSIZE;
9493 }
9494
9495 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9496                              struct wireless_dev *wdev)
9497 {
9498         struct sk_buff *msg;
9499
9500         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9501         if (!msg)
9502                 return;
9503
9504         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9505                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9506                 nlmsg_free(msg);
9507                 return;
9508         }
9509
9510         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9511                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9512 }
9513
9514 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9515                             struct wireless_dev *wdev)
9516 {
9517         struct sk_buff *msg;
9518
9519         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9520         if (!msg)
9521                 return;
9522
9523         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9524                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9525                 nlmsg_free(msg);
9526                 return;
9527         }
9528
9529         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9530                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9531 }
9532
9533 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9534                                struct wireless_dev *wdev)
9535 {
9536         struct sk_buff *msg;
9537
9538         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9539         if (!msg)
9540                 return;
9541
9542         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9543                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9544                 nlmsg_free(msg);
9545                 return;
9546         }
9547
9548         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9549                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9550 }
9551
9552 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9553                                      struct net_device *netdev)
9554 {
9555         struct sk_buff *msg;
9556
9557         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9558         if (!msg)
9559                 return;
9560
9561         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9562                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9563                 nlmsg_free(msg);
9564                 return;
9565         }
9566
9567         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9568                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9569 }
9570
9571 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9572                              struct net_device *netdev, u32 cmd)
9573 {
9574         struct sk_buff *msg;
9575
9576         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9577         if (!msg)
9578                 return;
9579
9580         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9581                 nlmsg_free(msg);
9582                 return;
9583         }
9584
9585         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9586                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9587 }
9588
9589 /*
9590  * This can happen on global regulatory changes or device specific settings
9591  * based on custom world regulatory domains.
9592  */
9593 void nl80211_send_reg_change_event(struct regulatory_request *request)
9594 {
9595         struct sk_buff *msg;
9596         void *hdr;
9597
9598         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9599         if (!msg)
9600                 return;
9601
9602         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9603         if (!hdr) {
9604                 nlmsg_free(msg);
9605                 return;
9606         }
9607
9608         /* Userspace can always count this one always being set */
9609         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9610                 goto nla_put_failure;
9611
9612         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9613                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9614                                NL80211_REGDOM_TYPE_WORLD))
9615                         goto nla_put_failure;
9616         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9617                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9618                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9619                         goto nla_put_failure;
9620         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9621                    request->intersect) {
9622                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9623                                NL80211_REGDOM_TYPE_INTERSECTION))
9624                         goto nla_put_failure;
9625         } else {
9626                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9627                                NL80211_REGDOM_TYPE_COUNTRY) ||
9628                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9629                                    request->alpha2))
9630                         goto nla_put_failure;
9631         }
9632
9633         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9634             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9635                 goto nla_put_failure;
9636
9637         genlmsg_end(msg, hdr);
9638
9639         rcu_read_lock();
9640         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9641                                 GFP_ATOMIC);
9642         rcu_read_unlock();
9643
9644         return;
9645
9646 nla_put_failure:
9647         genlmsg_cancel(msg, hdr);
9648         nlmsg_free(msg);
9649 }
9650
9651 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9652                                     struct net_device *netdev,
9653                                     const u8 *buf, size_t len,
9654                                     enum nl80211_commands cmd, gfp_t gfp)
9655 {
9656         struct sk_buff *msg;
9657         void *hdr;
9658
9659         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9660         if (!msg)
9661                 return;
9662
9663         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9664         if (!hdr) {
9665                 nlmsg_free(msg);
9666                 return;
9667         }
9668
9669         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9670             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9671             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9672                 goto nla_put_failure;
9673
9674         genlmsg_end(msg, hdr);
9675
9676         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9677                                 nl80211_mlme_mcgrp.id, gfp);
9678         return;
9679
9680  nla_put_failure:
9681         genlmsg_cancel(msg, hdr);
9682         nlmsg_free(msg);
9683 }
9684
9685 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9686                           struct net_device *netdev, const u8 *buf,
9687                           size_t len, gfp_t gfp)
9688 {
9689         nl80211_send_mlme_event(rdev, netdev, buf, len,
9690                                 NL80211_CMD_AUTHENTICATE, gfp);
9691 }
9692
9693 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9694                            struct net_device *netdev, const u8 *buf,
9695                            size_t len, gfp_t gfp)
9696 {
9697         nl80211_send_mlme_event(rdev, netdev, buf, len,
9698                                 NL80211_CMD_ASSOCIATE, gfp);
9699 }
9700
9701 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9702                          struct net_device *netdev, const u8 *buf,
9703                          size_t len, gfp_t gfp)
9704 {
9705         nl80211_send_mlme_event(rdev, netdev, buf, len,
9706                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9707 }
9708
9709 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9710                            struct net_device *netdev, const u8 *buf,
9711                            size_t len, gfp_t gfp)
9712 {
9713         nl80211_send_mlme_event(rdev, netdev, buf, len,
9714                                 NL80211_CMD_DISASSOCIATE, gfp);
9715 }
9716
9717 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9718                                   size_t len)
9719 {
9720         struct wireless_dev *wdev = dev->ieee80211_ptr;
9721         struct wiphy *wiphy = wdev->wiphy;
9722         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9723         const struct ieee80211_mgmt *mgmt = (void *)buf;
9724         u32 cmd;
9725
9726         if (WARN_ON(len < 2))
9727                 return;
9728
9729         if (ieee80211_is_deauth(mgmt->frame_control))
9730                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9731         else
9732                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9733
9734         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9735         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9736 }
9737 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9738
9739 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9740                                       struct net_device *netdev, int cmd,
9741                                       const u8 *addr, gfp_t gfp)
9742 {
9743         struct sk_buff *msg;
9744         void *hdr;
9745
9746         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9747         if (!msg)
9748                 return;
9749
9750         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9751         if (!hdr) {
9752                 nlmsg_free(msg);
9753                 return;
9754         }
9755
9756         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9757             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9758             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9759             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9760                 goto nla_put_failure;
9761
9762         genlmsg_end(msg, hdr);
9763
9764         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9765                                 nl80211_mlme_mcgrp.id, gfp);
9766         return;
9767
9768  nla_put_failure:
9769         genlmsg_cancel(msg, hdr);
9770         nlmsg_free(msg);
9771 }
9772
9773 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9774                                struct net_device *netdev, const u8 *addr,
9775                                gfp_t gfp)
9776 {
9777         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9778                                   addr, gfp);
9779 }
9780
9781 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9782                                 struct net_device *netdev, const u8 *addr,
9783                                 gfp_t gfp)
9784 {
9785         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9786                                   addr, gfp);
9787 }
9788
9789 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9790                                  struct net_device *netdev, const u8 *bssid,
9791                                  const u8 *req_ie, size_t req_ie_len,
9792                                  const u8 *resp_ie, size_t resp_ie_len,
9793                                  u16 status, gfp_t gfp)
9794 {
9795         struct sk_buff *msg;
9796         void *hdr;
9797
9798         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9799         if (!msg)
9800                 return;
9801
9802         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9803         if (!hdr) {
9804                 nlmsg_free(msg);
9805                 return;
9806         }
9807
9808         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9809             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9810             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9811             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9812             (req_ie &&
9813              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9814             (resp_ie &&
9815              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9816                 goto nla_put_failure;
9817
9818         genlmsg_end(msg, hdr);
9819
9820         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9821                                 nl80211_mlme_mcgrp.id, gfp);
9822         return;
9823
9824  nla_put_failure:
9825         genlmsg_cancel(msg, hdr);
9826         nlmsg_free(msg);
9827
9828 }
9829
9830 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9831                          struct net_device *netdev, const u8 *bssid,
9832                          const u8 *req_ie, size_t req_ie_len,
9833                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9834 {
9835         struct sk_buff *msg;
9836         void *hdr;
9837
9838         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9839         if (!msg)
9840                 return;
9841
9842         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9843         if (!hdr) {
9844                 nlmsg_free(msg);
9845                 return;
9846         }
9847
9848         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9849             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9850             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9851             (req_ie &&
9852              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9853             (resp_ie &&
9854              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9855                 goto nla_put_failure;
9856
9857         genlmsg_end(msg, hdr);
9858
9859         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9860                                 nl80211_mlme_mcgrp.id, gfp);
9861         return;
9862
9863  nla_put_failure:
9864         genlmsg_cancel(msg, hdr);
9865         nlmsg_free(msg);
9866
9867 }
9868
9869 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9870                                struct net_device *netdev, u16 reason,
9871                                const u8 *ie, size_t ie_len, bool from_ap)
9872 {
9873         struct sk_buff *msg;
9874         void *hdr;
9875
9876         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9877         if (!msg)
9878                 return;
9879
9880         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
9881         if (!hdr) {
9882                 nlmsg_free(msg);
9883                 return;
9884         }
9885
9886         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9887             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9888             (from_ap && reason &&
9889              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
9890             (from_ap &&
9891              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
9892             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
9893                 goto nla_put_failure;
9894
9895         genlmsg_end(msg, hdr);
9896
9897         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9898                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
9899         return;
9900
9901  nla_put_failure:
9902         genlmsg_cancel(msg, hdr);
9903         nlmsg_free(msg);
9904
9905 }
9906
9907 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
9908                              struct net_device *netdev, const u8 *bssid,
9909                              gfp_t gfp)
9910 {
9911         struct sk_buff *msg;
9912         void *hdr;
9913
9914         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9915         if (!msg)
9916                 return;
9917
9918         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
9919         if (!hdr) {
9920                 nlmsg_free(msg);
9921                 return;
9922         }
9923
9924         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9925             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9926             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
9927                 goto nla_put_failure;
9928
9929         genlmsg_end(msg, hdr);
9930
9931         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9932                                 nl80211_mlme_mcgrp.id, gfp);
9933         return;
9934
9935  nla_put_failure:
9936         genlmsg_cancel(msg, hdr);
9937         nlmsg_free(msg);
9938 }
9939
9940 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
9941                                         const u8* ie, u8 ie_len, gfp_t gfp)
9942 {
9943         struct wireless_dev *wdev = dev->ieee80211_ptr;
9944         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
9945         struct sk_buff *msg;
9946         void *hdr;
9947
9948         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
9949                 return;
9950
9951         trace_cfg80211_notify_new_peer_candidate(dev, addr);
9952
9953         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9954         if (!msg)
9955                 return;
9956
9957         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
9958         if (!hdr) {
9959                 nlmsg_free(msg);
9960                 return;
9961         }
9962
9963         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9964             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
9965             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
9966             (ie_len && ie &&
9967              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
9968                 goto nla_put_failure;
9969
9970         genlmsg_end(msg, hdr);
9971
9972         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9973                                 nl80211_mlme_mcgrp.id, gfp);
9974         return;
9975
9976  nla_put_failure:
9977         genlmsg_cancel(msg, hdr);
9978         nlmsg_free(msg);
9979 }
9980 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
9981
9982 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
9983                                  struct net_device *netdev, const u8 *addr,
9984                                  enum nl80211_key_type key_type, int key_id,
9985                                  const u8 *tsc, gfp_t gfp)
9986 {
9987         struct sk_buff *msg;
9988         void *hdr;
9989
9990         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9991         if (!msg)
9992                 return;
9993
9994         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
9995         if (!hdr) {
9996                 nlmsg_free(msg);
9997                 return;
9998         }
9999
10000         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10001             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10002             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10003             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10004             (key_id != -1 &&
10005              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10006             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10007                 goto nla_put_failure;
10008
10009         genlmsg_end(msg, hdr);
10010
10011         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10012                                 nl80211_mlme_mcgrp.id, gfp);
10013         return;
10014
10015  nla_put_failure:
10016         genlmsg_cancel(msg, hdr);
10017         nlmsg_free(msg);
10018 }
10019
10020 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10021                                     struct ieee80211_channel *channel_before,
10022                                     struct ieee80211_channel *channel_after)
10023 {
10024         struct sk_buff *msg;
10025         void *hdr;
10026         struct nlattr *nl_freq;
10027
10028         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10029         if (!msg)
10030                 return;
10031
10032         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10033         if (!hdr) {
10034                 nlmsg_free(msg);
10035                 return;
10036         }
10037
10038         /*
10039          * Since we are applying the beacon hint to a wiphy we know its
10040          * wiphy_idx is valid
10041          */
10042         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10043                 goto nla_put_failure;
10044
10045         /* Before */
10046         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10047         if (!nl_freq)
10048                 goto nla_put_failure;
10049         if (nl80211_msg_put_channel(msg, channel_before, false))
10050                 goto nla_put_failure;
10051         nla_nest_end(msg, nl_freq);
10052
10053         /* After */
10054         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10055         if (!nl_freq)
10056                 goto nla_put_failure;
10057         if (nl80211_msg_put_channel(msg, channel_after, false))
10058                 goto nla_put_failure;
10059         nla_nest_end(msg, nl_freq);
10060
10061         genlmsg_end(msg, hdr);
10062
10063         rcu_read_lock();
10064         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10065                                 GFP_ATOMIC);
10066         rcu_read_unlock();
10067
10068         return;
10069
10070 nla_put_failure:
10071         genlmsg_cancel(msg, hdr);
10072         nlmsg_free(msg);
10073 }
10074
10075 static void nl80211_send_remain_on_chan_event(
10076         int cmd, struct cfg80211_registered_device *rdev,
10077         struct wireless_dev *wdev, u64 cookie,
10078         struct ieee80211_channel *chan,
10079         unsigned int duration, gfp_t gfp)
10080 {
10081         struct sk_buff *msg;
10082         void *hdr;
10083
10084         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10085         if (!msg)
10086                 return;
10087
10088         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10089         if (!hdr) {
10090                 nlmsg_free(msg);
10091                 return;
10092         }
10093
10094         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10095             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10096                                          wdev->netdev->ifindex)) ||
10097             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10098             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10099             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10100                         NL80211_CHAN_NO_HT) ||
10101             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10102                 goto nla_put_failure;
10103
10104         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10105             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10106                 goto nla_put_failure;
10107
10108         genlmsg_end(msg, hdr);
10109
10110         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10111                                 nl80211_mlme_mcgrp.id, gfp);
10112         return;
10113
10114  nla_put_failure:
10115         genlmsg_cancel(msg, hdr);
10116         nlmsg_free(msg);
10117 }
10118
10119 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10120                                struct ieee80211_channel *chan,
10121                                unsigned int duration, gfp_t gfp)
10122 {
10123         struct wiphy *wiphy = wdev->wiphy;
10124         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10125
10126         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10127         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10128                                           rdev, wdev, cookie, chan,
10129                                           duration, gfp);
10130 }
10131 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10132
10133 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10134                                         struct ieee80211_channel *chan,
10135                                         gfp_t gfp)
10136 {
10137         struct wiphy *wiphy = wdev->wiphy;
10138         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10139
10140         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10141         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10142                                           rdev, wdev, cookie, chan, 0, gfp);
10143 }
10144 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10145
10146 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10147                       struct station_info *sinfo, gfp_t gfp)
10148 {
10149         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10150         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10151         struct sk_buff *msg;
10152
10153         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10154
10155         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10156         if (!msg)
10157                 return;
10158
10159         if (nl80211_send_station(msg, 0, 0, 0,
10160                                  rdev, dev, mac_addr, sinfo) < 0) {
10161                 nlmsg_free(msg);
10162                 return;
10163         }
10164
10165         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10166                                 nl80211_mlme_mcgrp.id, gfp);
10167 }
10168 EXPORT_SYMBOL(cfg80211_new_sta);
10169
10170 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10171 {
10172         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10173         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10174         struct sk_buff *msg;
10175         void *hdr;
10176
10177         trace_cfg80211_del_sta(dev, mac_addr);
10178
10179         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10180         if (!msg)
10181                 return;
10182
10183         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10184         if (!hdr) {
10185                 nlmsg_free(msg);
10186                 return;
10187         }
10188
10189         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10190             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10191                 goto nla_put_failure;
10192
10193         genlmsg_end(msg, hdr);
10194
10195         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10196                                 nl80211_mlme_mcgrp.id, gfp);
10197         return;
10198
10199  nla_put_failure:
10200         genlmsg_cancel(msg, hdr);
10201         nlmsg_free(msg);
10202 }
10203 EXPORT_SYMBOL(cfg80211_del_sta);
10204
10205 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10206                           enum nl80211_connect_failed_reason reason,
10207                           gfp_t gfp)
10208 {
10209         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10210         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10211         struct sk_buff *msg;
10212         void *hdr;
10213
10214         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10215         if (!msg)
10216                 return;
10217
10218         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10219         if (!hdr) {
10220                 nlmsg_free(msg);
10221                 return;
10222         }
10223
10224         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10225             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10226             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10227                 goto nla_put_failure;
10228
10229         genlmsg_end(msg, hdr);
10230
10231         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10232                                 nl80211_mlme_mcgrp.id, gfp);
10233         return;
10234
10235  nla_put_failure:
10236         genlmsg_cancel(msg, hdr);
10237         nlmsg_free(msg);
10238 }
10239 EXPORT_SYMBOL(cfg80211_conn_failed);
10240
10241 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10242                                        const u8 *addr, gfp_t gfp)
10243 {
10244         struct wireless_dev *wdev = dev->ieee80211_ptr;
10245         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10246         struct sk_buff *msg;
10247         void *hdr;
10248         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10249
10250         if (!nlportid)
10251                 return false;
10252
10253         msg = nlmsg_new(100, gfp);
10254         if (!msg)
10255                 return true;
10256
10257         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10258         if (!hdr) {
10259                 nlmsg_free(msg);
10260                 return true;
10261         }
10262
10263         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10264             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10265             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10266                 goto nla_put_failure;
10267
10268         genlmsg_end(msg, hdr);
10269         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10270         return true;
10271
10272  nla_put_failure:
10273         genlmsg_cancel(msg, hdr);
10274         nlmsg_free(msg);
10275         return true;
10276 }
10277
10278 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10279                                 const u8 *addr, gfp_t gfp)
10280 {
10281         struct wireless_dev *wdev = dev->ieee80211_ptr;
10282         bool ret;
10283
10284         trace_cfg80211_rx_spurious_frame(dev, addr);
10285
10286         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10287                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10288                 trace_cfg80211_return_bool(false);
10289                 return false;
10290         }
10291         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10292                                          addr, gfp);
10293         trace_cfg80211_return_bool(ret);
10294         return ret;
10295 }
10296 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10297
10298 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10299                                         const u8 *addr, gfp_t gfp)
10300 {
10301         struct wireless_dev *wdev = dev->ieee80211_ptr;
10302         bool ret;
10303
10304         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10305
10306         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10307                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10308                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10309                 trace_cfg80211_return_bool(false);
10310                 return false;
10311         }
10312         ret = __nl80211_unexpected_frame(dev,
10313                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10314                                          addr, gfp);
10315         trace_cfg80211_return_bool(ret);
10316         return ret;
10317 }
10318 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10319
10320 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10321                       struct wireless_dev *wdev, u32 nlportid,
10322                       int freq, int sig_dbm,
10323                       const u8 *buf, size_t len, gfp_t gfp)
10324 {
10325         struct net_device *netdev = wdev->netdev;
10326         struct sk_buff *msg;
10327         void *hdr;
10328
10329         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10330         if (!msg)
10331                 return -ENOMEM;
10332
10333         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10334         if (!hdr) {
10335                 nlmsg_free(msg);
10336                 return -ENOMEM;
10337         }
10338
10339         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10340             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10341                                         netdev->ifindex)) ||
10342             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10343             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10344             (sig_dbm &&
10345              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10346             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10347                 goto nla_put_failure;
10348
10349         genlmsg_end(msg, hdr);
10350
10351         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10352
10353  nla_put_failure:
10354         genlmsg_cancel(msg, hdr);
10355         nlmsg_free(msg);
10356         return -ENOBUFS;
10357 }
10358
10359 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10360                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10361 {
10362         struct wiphy *wiphy = wdev->wiphy;
10363         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10364         struct net_device *netdev = wdev->netdev;
10365         struct sk_buff *msg;
10366         void *hdr;
10367
10368         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10369
10370         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10371         if (!msg)
10372                 return;
10373
10374         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10375         if (!hdr) {
10376                 nlmsg_free(msg);
10377                 return;
10378         }
10379
10380         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10381             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10382                                    netdev->ifindex)) ||
10383             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10384             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10385             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10386             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10387                 goto nla_put_failure;
10388
10389         genlmsg_end(msg, hdr);
10390
10391         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10392                                 nl80211_mlme_mcgrp.id, gfp);
10393         return;
10394
10395  nla_put_failure:
10396         genlmsg_cancel(msg, hdr);
10397         nlmsg_free(msg);
10398 }
10399 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10400
10401 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10402                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10403                               gfp_t gfp)
10404 {
10405         struct wireless_dev *wdev = dev->ieee80211_ptr;
10406         struct wiphy *wiphy = wdev->wiphy;
10407         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10408         struct sk_buff *msg;
10409         struct nlattr *pinfoattr;
10410         void *hdr;
10411
10412         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10413
10414         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10415         if (!msg)
10416                 return;
10417
10418         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10419         if (!hdr) {
10420                 nlmsg_free(msg);
10421                 return;
10422         }
10423
10424         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10425             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10426                 goto nla_put_failure;
10427
10428         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10429         if (!pinfoattr)
10430                 goto nla_put_failure;
10431
10432         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10433                         rssi_event))
10434                 goto nla_put_failure;
10435
10436         nla_nest_end(msg, pinfoattr);
10437
10438         genlmsg_end(msg, hdr);
10439
10440         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10441                                 nl80211_mlme_mcgrp.id, gfp);
10442         return;
10443
10444  nla_put_failure:
10445         genlmsg_cancel(msg, hdr);
10446         nlmsg_free(msg);
10447 }
10448 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10449
10450 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10451                                      struct net_device *netdev, const u8 *bssid,
10452                                      const u8 *replay_ctr, gfp_t gfp)
10453 {
10454         struct sk_buff *msg;
10455         struct nlattr *rekey_attr;
10456         void *hdr;
10457
10458         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10459         if (!msg)
10460                 return;
10461
10462         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10463         if (!hdr) {
10464                 nlmsg_free(msg);
10465                 return;
10466         }
10467
10468         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10469             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10470             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10471                 goto nla_put_failure;
10472
10473         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10474         if (!rekey_attr)
10475                 goto nla_put_failure;
10476
10477         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10478                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10479                 goto nla_put_failure;
10480
10481         nla_nest_end(msg, rekey_attr);
10482
10483         genlmsg_end(msg, hdr);
10484
10485         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10486                                 nl80211_mlme_mcgrp.id, gfp);
10487         return;
10488
10489  nla_put_failure:
10490         genlmsg_cancel(msg, hdr);
10491         nlmsg_free(msg);
10492 }
10493
10494 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10495                                const u8 *replay_ctr, gfp_t gfp)
10496 {
10497         struct wireless_dev *wdev = dev->ieee80211_ptr;
10498         struct wiphy *wiphy = wdev->wiphy;
10499         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10500
10501         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10502         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10503 }
10504 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10505
10506 static void
10507 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10508                                struct net_device *netdev, int index,
10509                                const u8 *bssid, bool preauth, gfp_t gfp)
10510 {
10511         struct sk_buff *msg;
10512         struct nlattr *attr;
10513         void *hdr;
10514
10515         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10516         if (!msg)
10517                 return;
10518
10519         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10520         if (!hdr) {
10521                 nlmsg_free(msg);
10522                 return;
10523         }
10524
10525         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10526             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10527                 goto nla_put_failure;
10528
10529         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10530         if (!attr)
10531                 goto nla_put_failure;
10532
10533         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10534             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10535             (preauth &&
10536              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10537                 goto nla_put_failure;
10538
10539         nla_nest_end(msg, attr);
10540
10541         genlmsg_end(msg, hdr);
10542
10543         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10544                                 nl80211_mlme_mcgrp.id, gfp);
10545         return;
10546
10547  nla_put_failure:
10548         genlmsg_cancel(msg, hdr);
10549         nlmsg_free(msg);
10550 }
10551
10552 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10553                                      const u8 *bssid, bool preauth, gfp_t gfp)
10554 {
10555         struct wireless_dev *wdev = dev->ieee80211_ptr;
10556         struct wiphy *wiphy = wdev->wiphy;
10557         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10558
10559         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10560         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10561 }
10562 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10563
10564 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10565                                      struct net_device *netdev,
10566                                      struct cfg80211_chan_def *chandef,
10567                                      gfp_t gfp)
10568 {
10569         struct sk_buff *msg;
10570         void *hdr;
10571
10572         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10573         if (!msg)
10574                 return;
10575
10576         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10577         if (!hdr) {
10578                 nlmsg_free(msg);
10579                 return;
10580         }
10581
10582         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10583                 goto nla_put_failure;
10584
10585         if (nl80211_send_chandef(msg, chandef))
10586                 goto nla_put_failure;
10587
10588         genlmsg_end(msg, hdr);
10589
10590         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10591                                 nl80211_mlme_mcgrp.id, gfp);
10592         return;
10593
10594  nla_put_failure:
10595         genlmsg_cancel(msg, hdr);
10596         nlmsg_free(msg);
10597 }
10598
10599 void cfg80211_ch_switch_notify(struct net_device *dev,
10600                                struct cfg80211_chan_def *chandef)
10601 {
10602         struct wireless_dev *wdev = dev->ieee80211_ptr;
10603         struct wiphy *wiphy = wdev->wiphy;
10604         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10605
10606         trace_cfg80211_ch_switch_notify(dev, chandef);
10607
10608         wdev_lock(wdev);
10609
10610         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10611                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
10612                 goto out;
10613
10614         wdev->channel = chandef->chan;
10615         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10616 out:
10617         wdev_unlock(wdev);
10618         return;
10619 }
10620 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10621
10622 void cfg80211_cqm_txe_notify(struct net_device *dev,
10623                              const u8 *peer, u32 num_packets,
10624                              u32 rate, u32 intvl, gfp_t gfp)
10625 {
10626         struct wireless_dev *wdev = dev->ieee80211_ptr;
10627         struct wiphy *wiphy = wdev->wiphy;
10628         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10629         struct sk_buff *msg;
10630         struct nlattr *pinfoattr;
10631         void *hdr;
10632
10633         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10634         if (!msg)
10635                 return;
10636
10637         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10638         if (!hdr) {
10639                 nlmsg_free(msg);
10640                 return;
10641         }
10642
10643         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10644             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10645             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10646                 goto nla_put_failure;
10647
10648         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10649         if (!pinfoattr)
10650                 goto nla_put_failure;
10651
10652         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10653                 goto nla_put_failure;
10654
10655         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10656                 goto nla_put_failure;
10657
10658         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10659                 goto nla_put_failure;
10660
10661         nla_nest_end(msg, pinfoattr);
10662
10663         genlmsg_end(msg, hdr);
10664
10665         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10666                                 nl80211_mlme_mcgrp.id, gfp);
10667         return;
10668
10669  nla_put_failure:
10670         genlmsg_cancel(msg, hdr);
10671         nlmsg_free(msg);
10672 }
10673 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10674
10675 void
10676 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10677                      struct cfg80211_chan_def *chandef,
10678                      enum nl80211_radar_event event,
10679                      struct net_device *netdev, gfp_t gfp)
10680 {
10681         struct sk_buff *msg;
10682         void *hdr;
10683
10684         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10685         if (!msg)
10686                 return;
10687
10688         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10689         if (!hdr) {
10690                 nlmsg_free(msg);
10691                 return;
10692         }
10693
10694         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10695                 goto nla_put_failure;
10696
10697         /* NOP and radar events don't need a netdev parameter */
10698         if (netdev) {
10699                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10700
10701                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10702                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10703                         goto nla_put_failure;
10704         }
10705
10706         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10707                 goto nla_put_failure;
10708
10709         if (nl80211_send_chandef(msg, chandef))
10710                 goto nla_put_failure;
10711
10712         genlmsg_end(msg, hdr);
10713
10714         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10715                                 nl80211_mlme_mcgrp.id, gfp);
10716         return;
10717
10718  nla_put_failure:
10719         genlmsg_cancel(msg, hdr);
10720         nlmsg_free(msg);
10721 }
10722
10723 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10724                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10725 {
10726         struct wireless_dev *wdev = dev->ieee80211_ptr;
10727         struct wiphy *wiphy = wdev->wiphy;
10728         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10729         struct sk_buff *msg;
10730         struct nlattr *pinfoattr;
10731         void *hdr;
10732
10733         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10734
10735         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10736         if (!msg)
10737                 return;
10738
10739         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10740         if (!hdr) {
10741                 nlmsg_free(msg);
10742                 return;
10743         }
10744
10745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10746             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10747             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10748                 goto nla_put_failure;
10749
10750         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10751         if (!pinfoattr)
10752                 goto nla_put_failure;
10753
10754         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10755                 goto nla_put_failure;
10756
10757         nla_nest_end(msg, pinfoattr);
10758
10759         genlmsg_end(msg, hdr);
10760
10761         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10762                                 nl80211_mlme_mcgrp.id, gfp);
10763         return;
10764
10765  nla_put_failure:
10766         genlmsg_cancel(msg, hdr);
10767         nlmsg_free(msg);
10768 }
10769 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10770
10771 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10772                            u64 cookie, bool acked, gfp_t gfp)
10773 {
10774         struct wireless_dev *wdev = dev->ieee80211_ptr;
10775         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10776         struct sk_buff *msg;
10777         void *hdr;
10778
10779         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10780
10781         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10782
10783         if (!msg)
10784                 return;
10785
10786         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10787         if (!hdr) {
10788                 nlmsg_free(msg);
10789                 return;
10790         }
10791
10792         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10793             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10795             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10796             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10797                 goto nla_put_failure;
10798
10799         genlmsg_end(msg, hdr);
10800
10801         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10802                                 nl80211_mlme_mcgrp.id, gfp);
10803         return;
10804
10805  nla_put_failure:
10806         genlmsg_cancel(msg, hdr);
10807         nlmsg_free(msg);
10808 }
10809 EXPORT_SYMBOL(cfg80211_probe_status);
10810
10811 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10812                                  const u8 *frame, size_t len,
10813                                  int freq, int sig_dbm)
10814 {
10815         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10816         struct sk_buff *msg;
10817         void *hdr;
10818         struct cfg80211_beacon_registration *reg;
10819
10820         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10821
10822         spin_lock_bh(&rdev->beacon_registrations_lock);
10823         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10824                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10825                 if (!msg) {
10826                         spin_unlock_bh(&rdev->beacon_registrations_lock);
10827                         return;
10828                 }
10829
10830                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10831                 if (!hdr)
10832                         goto nla_put_failure;
10833
10834                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10835                     (freq &&
10836                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10837                     (sig_dbm &&
10838                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10839                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10840                         goto nla_put_failure;
10841
10842                 genlmsg_end(msg, hdr);
10843
10844                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10845         }
10846         spin_unlock_bh(&rdev->beacon_registrations_lock);
10847         return;
10848
10849  nla_put_failure:
10850         spin_unlock_bh(&rdev->beacon_registrations_lock);
10851         if (hdr)
10852                 genlmsg_cancel(msg, hdr);
10853         nlmsg_free(msg);
10854 }
10855 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10856
10857 #ifdef CONFIG_PM
10858 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10859                                    struct cfg80211_wowlan_wakeup *wakeup,
10860                                    gfp_t gfp)
10861 {
10862         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10863         struct sk_buff *msg;
10864         void *hdr;
10865         int size = 200;
10866
10867         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10868
10869         if (wakeup)
10870                 size += wakeup->packet_present_len;
10871
10872         msg = nlmsg_new(size, gfp);
10873         if (!msg)
10874                 return;
10875
10876         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10877         if (!hdr)
10878                 goto free_msg;
10879
10880         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10881             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10882                 goto free_msg;
10883
10884         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10885                                         wdev->netdev->ifindex))
10886                 goto free_msg;
10887
10888         if (wakeup) {
10889                 struct nlattr *reasons;
10890
10891                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
10892
10893                 if (wakeup->disconnect &&
10894                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
10895                         goto free_msg;
10896                 if (wakeup->magic_pkt &&
10897                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
10898                         goto free_msg;
10899                 if (wakeup->gtk_rekey_failure &&
10900                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
10901                         goto free_msg;
10902                 if (wakeup->eap_identity_req &&
10903                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
10904                         goto free_msg;
10905                 if (wakeup->four_way_handshake &&
10906                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
10907                         goto free_msg;
10908                 if (wakeup->rfkill_release &&
10909                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
10910                         goto free_msg;
10911
10912                 if (wakeup->pattern_idx >= 0 &&
10913                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
10914                                 wakeup->pattern_idx))
10915                         goto free_msg;
10916
10917                 if (wakeup->tcp_match)
10918                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
10919
10920                 if (wakeup->tcp_connlost)
10921                         nla_put_flag(msg,
10922                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
10923
10924                 if (wakeup->tcp_nomoretokens)
10925                         nla_put_flag(msg,
10926                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
10927
10928                 if (wakeup->packet) {
10929                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
10930                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
10931
10932                         if (!wakeup->packet_80211) {
10933                                 pkt_attr =
10934                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
10935                                 len_attr =
10936                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
10937                         }
10938
10939                         if (wakeup->packet_len &&
10940                             nla_put_u32(msg, len_attr, wakeup->packet_len))
10941                                 goto free_msg;
10942
10943                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
10944                                     wakeup->packet))
10945                                 goto free_msg;
10946                 }
10947
10948                 nla_nest_end(msg, reasons);
10949         }
10950
10951         genlmsg_end(msg, hdr);
10952
10953         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10954                                 nl80211_mlme_mcgrp.id, gfp);
10955         return;
10956
10957  free_msg:
10958         nlmsg_free(msg);
10959 }
10960 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
10961 #endif
10962
10963 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
10964                                 enum nl80211_tdls_operation oper,
10965                                 u16 reason_code, gfp_t gfp)
10966 {
10967         struct wireless_dev *wdev = dev->ieee80211_ptr;
10968         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10969         struct sk_buff *msg;
10970         void *hdr;
10971
10972         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
10973                                          reason_code);
10974
10975         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10976         if (!msg)
10977                 return;
10978
10979         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
10980         if (!hdr) {
10981                 nlmsg_free(msg);
10982                 return;
10983         }
10984
10985         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10986             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10987             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
10988             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
10989             (reason_code > 0 &&
10990              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
10991                 goto nla_put_failure;
10992
10993         genlmsg_end(msg, hdr);
10994
10995         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10996                                 nl80211_mlme_mcgrp.id, gfp);
10997         return;
10998
10999  nla_put_failure:
11000         genlmsg_cancel(msg, hdr);
11001         nlmsg_free(msg);
11002 }
11003 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11004
11005 static int nl80211_netlink_notify(struct notifier_block * nb,
11006                                   unsigned long state,
11007                                   void *_notify)
11008 {
11009         struct netlink_notify *notify = _notify;
11010         struct cfg80211_registered_device *rdev;
11011         struct wireless_dev *wdev;
11012         struct cfg80211_beacon_registration *reg, *tmp;
11013
11014         if (state != NETLINK_URELEASE)
11015                 return NOTIFY_DONE;
11016
11017         rcu_read_lock();
11018
11019         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11020                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11021                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11022
11023                 spin_lock_bh(&rdev->beacon_registrations_lock);
11024                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11025                                          list) {
11026                         if (reg->nlportid == notify->portid) {
11027                                 list_del(&reg->list);
11028                                 kfree(reg);
11029                                 break;
11030                         }
11031                 }
11032                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11033         }
11034
11035         rcu_read_unlock();
11036
11037         return NOTIFY_DONE;
11038 }
11039
11040 static struct notifier_block nl80211_netlink_notifier = {
11041         .notifier_call = nl80211_netlink_notify,
11042 };
11043
11044 void cfg80211_ft_event(struct net_device *netdev,
11045                        struct cfg80211_ft_event_params *ft_event)
11046 {
11047         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11048         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11049         struct sk_buff *msg;
11050         void *hdr;
11051
11052         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11053
11054         if (!ft_event->target_ap)
11055                 return;
11056
11057         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11058         if (!msg)
11059                 return;
11060
11061         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11062         if (!hdr) {
11063                 nlmsg_free(msg);
11064                 return;
11065         }
11066
11067         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11068         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11069         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11070         if (ft_event->ies)
11071                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11072         if (ft_event->ric_ies)
11073                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11074                         ft_event->ric_ies);
11075
11076         genlmsg_end(msg, hdr);
11077
11078         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11079                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11080 }
11081 EXPORT_SYMBOL(cfg80211_ft_event);
11082
11083 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11084 {
11085         struct cfg80211_registered_device *rdev;
11086         struct sk_buff *msg;
11087         void *hdr;
11088         u32 nlportid;
11089
11090         rdev = wiphy_to_dev(wdev->wiphy);
11091         if (!rdev->crit_proto_nlportid)
11092                 return;
11093
11094         nlportid = rdev->crit_proto_nlportid;
11095         rdev->crit_proto_nlportid = 0;
11096
11097         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11098         if (!msg)
11099                 return;
11100
11101         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11102         if (!hdr)
11103                 goto nla_put_failure;
11104
11105         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11106             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11107                 goto nla_put_failure;
11108
11109         genlmsg_end(msg, hdr);
11110
11111         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11112         return;
11113
11114  nla_put_failure:
11115         if (hdr)
11116                 genlmsg_cancel(msg, hdr);
11117         nlmsg_free(msg);
11118
11119 }
11120 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11121
11122 /* initialisation/exit functions */
11123
11124 int nl80211_init(void)
11125 {
11126         int err;
11127
11128         err = genl_register_family_with_ops(&nl80211_fam,
11129                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11130         if (err)
11131                 return err;
11132
11133         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11134         if (err)
11135                 goto err_out;
11136
11137         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11138         if (err)
11139                 goto err_out;
11140
11141         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11142         if (err)
11143                 goto err_out;
11144
11145         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11146         if (err)
11147                 goto err_out;
11148
11149 #ifdef CONFIG_NL80211_TESTMODE
11150         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11151         if (err)
11152                 goto err_out;
11153 #endif
11154
11155         err = netlink_register_notifier(&nl80211_netlink_notifier);
11156         if (err)
11157                 goto err_out;
11158
11159         return 0;
11160  err_out:
11161         genl_unregister_family(&nl80211_fam);
11162         return err;
11163 }
11164
11165 void nl80211_exit(void)
11166 {
11167         netlink_unregister_notifier(&nl80211_netlink_notifier);
11168         genl_unregister_family(&nl80211_fam);
11169 }