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         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 353         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 354         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 355         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
 356         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
 357 };
 358
 359 /* policy for the key attributes */
 360 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 361         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 362         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 363         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 364         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 365         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 366         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 367         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 368         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 369 };
 370
 371 /* policy for the key default flags */
 372 static const struct nla_policy
 373 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 374         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 375         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 376 };
 377
 378 /* policy for WoWLAN attributes */
 379 static const struct nla_policy
 380 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 381         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 382         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 383         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 384         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 385         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 386         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 387         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 388         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 389         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 390 };
 391
 392 static const struct nla_policy
 393 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 394         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 395         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 396         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 397         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 398         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 399         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 400         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 401                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 402         },
 403         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 404                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 405         },
 406         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 407         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 408         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 409 };
 410
 411 /* policy for coalesce rule attributes */
 412 static const struct nla_policy
 413 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 414         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 415         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 416         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 417 };
 418
 419 /* policy for GTK rekey offload attributes */
 420 static const struct nla_policy
 421 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 422         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 423         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 424         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 425 };
 426
 427 static const struct nla_policy
 428 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 429         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 430                                                  .len = IEEE80211_MAX_SSID_LEN },
 431         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 432 };
 433
 434 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 435                                      struct netlink_callback *cb,
 436                                      struct cfg80211_registered_device **rdev,
 437                                      struct wireless_dev **wdev)
 438 {
 439         int err;
 440
 441         rtnl_lock();
 442
 443         if (!cb->args[0]) {
 444                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 445                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 446                                   nl80211_policy);
 447                 if (err)
 448                         goto out_unlock;
 449
 450                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 451                                                    nl80211_fam.attrbuf);
 452                 if (IS_ERR(*wdev)) {
 453                         err = PTR_ERR(*wdev);
 454                         goto out_unlock;
 455                 }
 456                 *rdev = wiphy_to_dev((*wdev)->wiphy);
 457                 /* 0 is the first index - add 1 to parse only once */
 458                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 459                 cb->args[1] = (*wdev)->identifier;
 460         } else {
 461                 /* subtract the 1 again here */
 462                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 463                 struct wireless_dev *tmp;
 464
 465                 if (!wiphy) {
 466                         err = -ENODEV;
 467                         goto out_unlock;
 468                 }
 469                 *rdev = wiphy_to_dev(wiphy);
 470                 *wdev = NULL;
 471
 472                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 473                         if (tmp->identifier == cb->args[1]) {
 474                                 *wdev = tmp;
 475                                 break;
 476                         }
 477                 }
 478
 479                 if (!*wdev) {
 480                         err = -ENODEV;
 481                         goto out_unlock;
 482                 }
 483         }
 484
 485         return 0;
 486  out_unlock:
 487         rtnl_unlock();
 488         return err;
 489 }
 490
 491 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 492 {
 493         rtnl_unlock();
 494 }
 495
 496 /* IE validation */
 497 static bool is_valid_ie_attr(const struct nlattr *attr)
 498 {
 499         const u8 *pos;
 500         int len;
 501
 502         if (!attr)
 503                 return true;
 504
 505         pos = nla_data(attr);
 506         len = nla_len(attr);
 507
 508         while (len) {
 509                 u8 elemlen;
 510
 511                 if (len < 2)
 512                         return false;
 513                 len -= 2;
 514
 515                 elemlen = pos[1];
 516                 if (elemlen > len)
 517                         return false;
 518
 519                 len -= elemlen;
 520                 pos += 2 + elemlen;
 521         }
 522
 523         return true;
 524 }
 525
 526 /* message building helper */
 527 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 528                                    int flags, u8 cmd)
 529 {
 530         /* since there is no private header just add the generic one */
 531         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 532 }
 533
 534 static int nl80211_msg_put_channel(struct sk_buff *msg,
 535                                    struct ieee80211_channel *chan,
 536                                    bool large)
 537 {
 538         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 539                         chan->center_freq))
 540                 goto nla_put_failure;
 541
 542         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 543             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 544                 goto nla_put_failure;
 545         if ((chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
 546             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_PASSIVE_SCAN))
 547                 goto nla_put_failure;
 548         if ((chan->flags & IEEE80211_CHAN_NO_IBSS) &&
 549             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS))
 550                 goto nla_put_failure;
 551         if (chan->flags & IEEE80211_CHAN_RADAR) {
 552                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 553                         goto nla_put_failure;
 554                 if (large) {
 555                         u32 time;
 556
 557                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 558
 559                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 560                                         chan->dfs_state))
 561                                 goto nla_put_failure;
 562                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 563                                         time))
 564                                 goto nla_put_failure;
 565                 }
 566         }
 567
 568         if (large) {
 569                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 570                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 571                         goto nla_put_failure;
 572                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 573                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 574                         goto nla_put_failure;
 575                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 576                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 577                         goto nla_put_failure;
 578                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 579                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 580                         goto nla_put_failure;
 581         }
 582
 583         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 584                         DBM_TO_MBM(chan->max_power)))
 585                 goto nla_put_failure;
 586
 587         return 0;
 588
 589  nla_put_failure:
 590         return -ENOBUFS;
 591 }
 592
 593 /* netlink command implementations */
 594
 595 struct key_parse {
 596         struct key_params p;
 597         int idx;
 598         int type;
 599         bool def, defmgmt;
 600         bool def_uni, def_multi;
 601 };
 602
 603 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 604 {
 605         struct nlattr *tb[NL80211_KEY_MAX + 1];
 606         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 607                                    nl80211_key_policy);
 608         if (err)
 609                 return err;
 610
 611         k->def = !!tb[NL80211_KEY_DEFAULT];
 612         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 613
 614         if (k->def) {
 615                 k->def_uni = true;
 616                 k->def_multi = true;
 617         }
 618         if (k->defmgmt)
 619                 k->def_multi = true;
 620
 621         if (tb[NL80211_KEY_IDX])
 622                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 623
 624         if (tb[NL80211_KEY_DATA]) {
 625                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 626                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 627         }
 628
 629         if (tb[NL80211_KEY_SEQ]) {
 630                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 631                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 632         }
 633
 634         if (tb[NL80211_KEY_CIPHER])
 635                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 636
 637         if (tb[NL80211_KEY_TYPE]) {
 638                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 639                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 640                         return -EINVAL;
 641         }
 642
 643         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 644                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 645                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 646                                        tb[NL80211_KEY_DEFAULT_TYPES],
 647                                        nl80211_key_default_policy);
 648                 if (err)
 649                         return err;
 650
 651                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 652                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 653         }
 654
 655         return 0;
 656 }
 657
 658 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 659 {
 660         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 661                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 662                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 663         }
 664
 665         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 666                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 667                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 668         }
 669
 670         if (info->attrs[NL80211_ATTR_KEY_IDX])
 671                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 672
 673         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 674                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 675
 676         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 677         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 678
 679         if (k->def) {
 680                 k->def_uni = true;
 681                 k->def_multi = true;
 682         }
 683         if (k->defmgmt)
 684                 k->def_multi = true;
 685
 686         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 687                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 688                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 689                         return -EINVAL;
 690         }
 691
 692         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 693                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 694                 int err = nla_parse_nested(
 695                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 696                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 697                                 nl80211_key_default_policy);
 698                 if (err)
 699                         return err;
 700
 701                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 702                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 703         }
 704
 705         return 0;
 706 }
 707
 708 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 709 {
 710         int err;
 711
 712         memset(k, 0, sizeof(*k));
 713         k->idx = -1;
 714         k->type = -1;
 715
 716         if (info->attrs[NL80211_ATTR_KEY])
 717                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 718         else
 719                 err = nl80211_parse_key_old(info, k);
 720
 721         if (err)
 722                 return err;
 723
 724         if (k->def && k->defmgmt)
 725                 return -EINVAL;
 726
 727         if (k->defmgmt) {
 728                 if (k->def_uni || !k->def_multi)
 729                         return -EINVAL;
 730         }
 731
 732         if (k->idx != -1) {
 733                 if (k->defmgmt) {
 734                         if (k->idx < 4 || k->idx > 5)
 735                                 return -EINVAL;
 736                 } else if (k->def) {
 737                         if (k->idx < 0 || k->idx > 3)
 738                                 return -EINVAL;
 739                 } else {
 740                         if (k->idx < 0 || k->idx > 5)
 741                                 return -EINVAL;
 742                 }
 743         }
 744
 745         return 0;
 746 }
 747
 748 static struct cfg80211_cached_keys *
 749 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 750                        struct nlattr *keys, bool *no_ht)
 751 {
 752         struct key_parse parse;
 753         struct nlattr *key;
 754         struct cfg80211_cached_keys *result;
 755         int rem, err, def = 0;
 756
 757         result = kzalloc(sizeof(*result), GFP_KERNEL);
 758         if (!result)
 759                 return ERR_PTR(-ENOMEM);
 760
 761         result->def = -1;
 762         result->defmgmt = -1;
 763
 764         nla_for_each_nested(key, keys, rem) {
 765                 memset(&parse, 0, sizeof(parse));
 766                 parse.idx = -1;
 767
 768                 err = nl80211_parse_key_new(key, &parse);
 769                 if (err)
 770                         goto error;
 771                 err = -EINVAL;
 772                 if (!parse.p.key)
 773                         goto error;
 774                 if (parse.idx < 0 || parse.idx > 4)
 775                         goto error;
 776                 if (parse.def) {
 777                         if (def)
 778                                 goto error;
 779                         def = 1;
 780                         result->def = parse.idx;
 781                         if (!parse.def_uni || !parse.def_multi)
 782                                 goto error;
 783                 } else if (parse.defmgmt)
 784                         goto error;
 785                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 786                                                      parse.idx, false, NULL);
 787                 if (err)
 788                         goto error;
 789                 result->params[parse.idx].cipher = parse.p.cipher;
 790                 result->params[parse.idx].key_len = parse.p.key_len;
 791                 result->params[parse.idx].key = result->data[parse.idx];
 792                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 793
 794                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 795                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 796                         if (no_ht)
 797                                 *no_ht = true;
 798                 }
 799         }
 800
 801         return result;
 802  error:
 803         kfree(result);
 804         return ERR_PTR(err);
 805 }
 806
 807 static int nl80211_key_allowed(struct wireless_dev *wdev)
 808 {
 809         ASSERT_WDEV_LOCK(wdev);
 810
 811         switch (wdev->iftype) {
 812         case NL80211_IFTYPE_AP:
 813         case NL80211_IFTYPE_AP_VLAN:
 814         case NL80211_IFTYPE_P2P_GO:
 815         case NL80211_IFTYPE_MESH_POINT:
 816                 break;
 817         case NL80211_IFTYPE_ADHOC:
 818         case NL80211_IFTYPE_STATION:
 819         case NL80211_IFTYPE_P2P_CLIENT:
 820                 if (!wdev->current_bss)
 821                         return -ENOLINK;
 822                 break;
 823         default:
 824                 return -EINVAL;
 825         }
 826
 827         return 0;
 828 }
 829
 830 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 831 {
 832         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 833         int i;
 834
 835         if (!nl_modes)
 836                 goto nla_put_failure;
 837
 838         i = 0;
 839         while (ifmodes) {
 840                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 841                         goto nla_put_failure;
 842                 ifmodes >>= 1;
 843                 i++;
 844         }
 845
 846         nla_nest_end(msg, nl_modes);
 847         return 0;
 848
 849 nla_put_failure:
 850         return -ENOBUFS;
 851 }
 852
 853 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 854                                           struct sk_buff *msg,
 855                                           bool large)
 856 {
 857         struct nlattr *nl_combis;
 858         int i, j;
 859
 860         nl_combis = nla_nest_start(msg,
 861                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 862         if (!nl_combis)
 863                 goto nla_put_failure;
 864
 865         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 866                 const struct ieee80211_iface_combination *c;
 867                 struct nlattr *nl_combi, *nl_limits;
 868
 869                 c = &wiphy->iface_combinations[i];
 870
 871                 nl_combi = nla_nest_start(msg, i + 1);
 872                 if (!nl_combi)
 873                         goto nla_put_failure;
 874
 875                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 876                 if (!nl_limits)
 877                         goto nla_put_failure;
 878
 879                 for (j = 0; j < c->n_limits; j++) {
 880                         struct nlattr *nl_limit;
 881
 882                         nl_limit = nla_nest_start(msg, j + 1);
 883                         if (!nl_limit)
 884                                 goto nla_put_failure;
 885                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 886                                         c->limits[j].max))
 887                                 goto nla_put_failure;
 888                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 889                                                 c->limits[j].types))
 890                                 goto nla_put_failure;
 891                         nla_nest_end(msg, nl_limit);
 892                 }
 893
 894                 nla_nest_end(msg, nl_limits);
 895
 896                 if (c->beacon_int_infra_match &&
 897                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 898                         goto nla_put_failure;
 899                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 900                                 c->num_different_channels) ||
 901                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 902                                 c->max_interfaces))
 903                         goto nla_put_failure;
 904                 if (large &&
 905                     nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 906                                 c->radar_detect_widths))
 907                         goto nla_put_failure;
 908
 909                 nla_nest_end(msg, nl_combi);
 910         }
 911
 912         nla_nest_end(msg, nl_combis);
 913
 914         return 0;
 915 nla_put_failure:
 916         return -ENOBUFS;
 917 }
 918
 919 #ifdef CONFIG_PM
 920 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
 921                                         struct sk_buff *msg)
 922 {
 923         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
 924         struct nlattr *nl_tcp;
 925
 926         if (!tcp)
 927                 return 0;
 928
 929         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
 930         if (!nl_tcp)
 931                 return -ENOBUFS;
 932
 933         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 934                         tcp->data_payload_max))
 935                 return -ENOBUFS;
 936
 937         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
 938                         tcp->data_payload_max))
 939                 return -ENOBUFS;
 940
 941         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
 942                 return -ENOBUFS;
 943
 944         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
 945                                 sizeof(*tcp->tok), tcp->tok))
 946                 return -ENOBUFS;
 947
 948         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
 949                         tcp->data_interval_max))
 950                 return -ENOBUFS;
 951
 952         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
 953                         tcp->wake_payload_max))
 954                 return -ENOBUFS;
 955
 956         nla_nest_end(msg, nl_tcp);
 957         return 0;
 958 }
 959
 960 static int nl80211_send_wowlan(struct sk_buff *msg,
 961                                struct cfg80211_registered_device *dev,
 962                                bool large)
 963 {
 964         struct nlattr *nl_wowlan;
 965
 966         if (!dev->wiphy.wowlan)
 967                 return 0;
 968
 969         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
 970         if (!nl_wowlan)
 971                 return -ENOBUFS;
 972
 973         if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
 974              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
 975             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
 976              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
 977             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
 978              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
 979             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
 980              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
 981             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
 982              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
 983             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
 984              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
 985             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
 986              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
 987             ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
 988              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
 989                 return -ENOBUFS;
 990
 991         if (dev->wiphy.wowlan->n_patterns) {
 992                 struct nl80211_pattern_support pat = {
 993                         .max_patterns = dev->wiphy.wowlan->n_patterns,
 994                         .min_pattern_len = dev->wiphy.wowlan->pattern_min_len,
 995                         .max_pattern_len = dev->wiphy.wowlan->pattern_max_len,
 996                         .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset,
 997                 };
 998
 999                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1000                             sizeof(pat), &pat))
1001                         return -ENOBUFS;
1002         }
1003
1004         if (large && nl80211_send_wowlan_tcp_caps(dev, msg))
1005                 return -ENOBUFS;
1006
1007         nla_nest_end(msg, nl_wowlan);
1008
1009         return 0;
1010 }
1011 #endif
1012
1013 static int nl80211_send_coalesce(struct sk_buff *msg,
1014                                  struct cfg80211_registered_device *dev)
1015 {
1016         struct nl80211_coalesce_rule_support rule;
1017
1018         if (!dev->wiphy.coalesce)
1019                 return 0;
1020
1021         rule.max_rules = dev->wiphy.coalesce->n_rules;
1022         rule.max_delay = dev->wiphy.coalesce->max_delay;
1023         rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns;
1024         rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len;
1025         rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len;
1026         rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset;
1027
1028         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1029                 return -ENOBUFS;
1030
1031         return 0;
1032 }
1033
1034 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1035                                       struct ieee80211_supported_band *sband)
1036 {
1037         struct nlattr *nl_rates, *nl_rate;
1038         struct ieee80211_rate *rate;
1039         int i;
1040
1041         /* add HT info */
1042         if (sband->ht_cap.ht_supported &&
1043             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1044                      sizeof(sband->ht_cap.mcs),
1045                      &sband->ht_cap.mcs) ||
1046              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1047                          sband->ht_cap.cap) ||
1048              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1049                         sband->ht_cap.ampdu_factor) ||
1050              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1051                         sband->ht_cap.ampdu_density)))
1052                 return -ENOBUFS;
1053
1054         /* add VHT info */
1055         if (sband->vht_cap.vht_supported &&
1056             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1057                      sizeof(sband->vht_cap.vht_mcs),
1058                      &sband->vht_cap.vht_mcs) ||
1059              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1060                          sband->vht_cap.cap)))
1061                 return -ENOBUFS;
1062
1063         /* add bitrates */
1064         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1065         if (!nl_rates)
1066                 return -ENOBUFS;
1067
1068         for (i = 0; i < sband->n_bitrates; i++) {
1069                 nl_rate = nla_nest_start(msg, i);
1070                 if (!nl_rate)
1071                         return -ENOBUFS;
1072
1073                 rate = &sband->bitrates[i];
1074                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1075                                 rate->bitrate))
1076                         return -ENOBUFS;
1077                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1078                     nla_put_flag(msg,
1079                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1080                         return -ENOBUFS;
1081
1082                 nla_nest_end(msg, nl_rate);
1083         }
1084
1085         nla_nest_end(msg, nl_rates);
1086
1087         return 0;
1088 }
1089
1090 static int
1091 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1092                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1093 {
1094         u16 stypes;
1095         struct nlattr *nl_ftypes, *nl_ifs;
1096         enum nl80211_iftype ift;
1097         int i;
1098
1099         if (!mgmt_stypes)
1100                 return 0;
1101
1102         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1103         if (!nl_ifs)
1104                 return -ENOBUFS;
1105
1106         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1107                 nl_ftypes = nla_nest_start(msg, ift);
1108                 if (!nl_ftypes)
1109                         return -ENOBUFS;
1110                 i = 0;
1111                 stypes = mgmt_stypes[ift].tx;
1112                 while (stypes) {
1113                         if ((stypes & 1) &&
1114                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1115                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1116                                 return -ENOBUFS;
1117                         stypes >>= 1;
1118                         i++;
1119                 }
1120                 nla_nest_end(msg, nl_ftypes);
1121         }
1122
1123         nla_nest_end(msg, nl_ifs);
1124
1125         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1126         if (!nl_ifs)
1127                 return -ENOBUFS;
1128
1129         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1130                 nl_ftypes = nla_nest_start(msg, ift);
1131                 if (!nl_ftypes)
1132                         return -ENOBUFS;
1133                 i = 0;
1134                 stypes = mgmt_stypes[ift].rx;
1135                 while (stypes) {
1136                         if ((stypes & 1) &&
1137                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1138                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1139                                 return -ENOBUFS;
1140                         stypes >>= 1;
1141                         i++;
1142                 }
1143                 nla_nest_end(msg, nl_ftypes);
1144         }
1145         nla_nest_end(msg, nl_ifs);
1146
1147         return 0;
1148 }
1149
1150 struct nl80211_dump_wiphy_state {
1151         s64 filter_wiphy;
1152         long start;
1153         long split_start, band_start, chan_start;
1154         bool split;
1155 };
1156
1157 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev,
1158                               struct sk_buff *msg, u32 portid, u32 seq,
1159                               int flags, struct nl80211_dump_wiphy_state *state)
1160 {
1161         void *hdr;
1162         struct nlattr *nl_bands, *nl_band;
1163         struct nlattr *nl_freqs, *nl_freq;
1164         struct nlattr *nl_cmds;
1165         enum ieee80211_band band;
1166         struct ieee80211_channel *chan;
1167         int i;
1168         const struct ieee80211_txrx_stypes *mgmt_stypes =
1169                                 dev->wiphy.mgmt_stypes;
1170         u32 features;
1171
1172         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY);
1173         if (!hdr)
1174                 return -ENOBUFS;
1175
1176         if (WARN_ON(!state))
1177                 return -EINVAL;
1178
1179         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) ||
1180             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1181                            wiphy_name(&dev->wiphy)) ||
1182             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1183                         cfg80211_rdev_list_generation))
1184                 goto nla_put_failure;
1185
1186         switch (state->split_start) {
1187         case 0:
1188                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1189                                dev->wiphy.retry_short) ||
1190                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1191                                dev->wiphy.retry_long) ||
1192                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1193                                 dev->wiphy.frag_threshold) ||
1194                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1195                                 dev->wiphy.rts_threshold) ||
1196                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1197                                dev->wiphy.coverage_class) ||
1198                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1199                                dev->wiphy.max_scan_ssids) ||
1200                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1201                                dev->wiphy.max_sched_scan_ssids) ||
1202                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1203                                 dev->wiphy.max_scan_ie_len) ||
1204                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1205                                 dev->wiphy.max_sched_scan_ie_len) ||
1206                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1207                                dev->wiphy.max_match_sets))
1208                         goto nla_put_failure;
1209
1210                 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1211                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1212                         goto nla_put_failure;
1213                 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1214                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1215                         goto nla_put_failure;
1216                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1217                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1218                         goto nla_put_failure;
1219                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1220                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1221                         goto nla_put_failure;
1222                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1223                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1224                         goto nla_put_failure;
1225                 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1226                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1227                         goto nla_put_failure;
1228                 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1229                     nla_put_flag(msg, WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1230                         goto nla_put_failure;
1231
1232                 state->split_start++;
1233                 if (state->split)
1234                         break;
1235         case 1:
1236                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1237                             sizeof(u32) * dev->wiphy.n_cipher_suites,
1238                             dev->wiphy.cipher_suites))
1239                         goto nla_put_failure;
1240
1241                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1242                                dev->wiphy.max_num_pmkids))
1243                         goto nla_put_failure;
1244
1245                 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1246                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1247                         goto nla_put_failure;
1248
1249                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1250                                 dev->wiphy.available_antennas_tx) ||
1251                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1252                                 dev->wiphy.available_antennas_rx))
1253                         goto nla_put_failure;
1254
1255                 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1256                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1257                                 dev->wiphy.probe_resp_offload))
1258                         goto nla_put_failure;
1259
1260                 if ((dev->wiphy.available_antennas_tx ||
1261                      dev->wiphy.available_antennas_rx) &&
1262                     dev->ops->get_antenna) {
1263                         u32 tx_ant = 0, rx_ant = 0;
1264                         int res;
1265                         res = rdev_get_antenna(dev, &tx_ant, &rx_ant);
1266                         if (!res) {
1267                                 if (nla_put_u32(msg,
1268                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1269                                                 tx_ant) ||
1270                                     nla_put_u32(msg,
1271                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1272                                                 rx_ant))
1273                                         goto nla_put_failure;
1274                         }
1275                 }
1276
1277                 state->split_start++;
1278                 if (state->split)
1279                         break;
1280         case 2:
1281                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1282                                         dev->wiphy.interface_modes))
1283                                 goto nla_put_failure;
1284                 state->split_start++;
1285                 if (state->split)
1286                         break;
1287         case 3:
1288                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1289                 if (!nl_bands)
1290                         goto nla_put_failure;
1291
1292                 for (band = state->band_start;
1293                      band < IEEE80211_NUM_BANDS; band++) {
1294                         struct ieee80211_supported_band *sband;
1295
1296                         sband = dev->wiphy.bands[band];
1297
1298                         if (!sband)
1299                                 continue;
1300
1301                         nl_band = nla_nest_start(msg, band);
1302                         if (!nl_band)
1303                                 goto nla_put_failure;
1304
1305                         switch (state->chan_start) {
1306                         case 0:
1307                                 if (nl80211_send_band_rateinfo(msg, sband))
1308                                         goto nla_put_failure;
1309                                 state->chan_start++;
1310                                 if (state->split)
1311                                         break;
1312                         default:
1313                                 /* add frequencies */
1314                                 nl_freqs = nla_nest_start(
1315                                         msg, NL80211_BAND_ATTR_FREQS);
1316                                 if (!nl_freqs)
1317                                         goto nla_put_failure;
1318
1319                                 for (i = state->chan_start - 1;
1320                                      i < sband->n_channels;
1321                                      i++) {
1322                                         nl_freq = nla_nest_start(msg, i);
1323                                         if (!nl_freq)
1324                                                 goto nla_put_failure;
1325
1326                                         chan = &sband->channels[i];
1327
1328                                         if (nl80211_msg_put_channel(
1329                                                         msg, chan,
1330                                                         state->split))
1331                                                 goto nla_put_failure;
1332
1333                                         nla_nest_end(msg, nl_freq);
1334                                         if (state->split)
1335                                                 break;
1336                                 }
1337                                 if (i < sband->n_channels)
1338                                         state->chan_start = i + 2;
1339                                 else
1340                                         state->chan_start = 0;
1341                                 nla_nest_end(msg, nl_freqs);
1342                         }
1343
1344                         nla_nest_end(msg, nl_band);
1345
1346                         if (state->split) {
1347                                 /* start again here */
1348                                 if (state->chan_start)
1349                                         band--;
1350                                 break;
1351                         }
1352                 }
1353                 nla_nest_end(msg, nl_bands);
1354
1355                 if (band < IEEE80211_NUM_BANDS)
1356                         state->band_start = band + 1;
1357                 else
1358                         state->band_start = 0;
1359
1360                 /* if bands & channels are done, continue outside */
1361                 if (state->band_start == 0 && state->chan_start == 0)
1362                         state->split_start++;
1363                 if (state->split)
1364                         break;
1365         case 4:
1366                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1367                 if (!nl_cmds)
1368                         goto nla_put_failure;
1369
1370                 i = 0;
1371 #define CMD(op, n)                                                      \
1372                  do {                                                   \
1373                         if (dev->ops->op) {                             \
1374                                 i++;                                    \
1375                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1376                                         goto nla_put_failure;           \
1377                         }                                               \
1378                 } while (0)
1379
1380                 CMD(add_virtual_intf, NEW_INTERFACE);
1381                 CMD(change_virtual_intf, SET_INTERFACE);
1382                 CMD(add_key, NEW_KEY);
1383                 CMD(start_ap, START_AP);
1384                 CMD(add_station, NEW_STATION);
1385                 CMD(add_mpath, NEW_MPATH);
1386                 CMD(update_mesh_config, SET_MESH_CONFIG);
1387                 CMD(change_bss, SET_BSS);
1388                 CMD(auth, AUTHENTICATE);
1389                 CMD(assoc, ASSOCIATE);
1390                 CMD(deauth, DEAUTHENTICATE);
1391                 CMD(disassoc, DISASSOCIATE);
1392                 CMD(join_ibss, JOIN_IBSS);
1393                 CMD(join_mesh, JOIN_MESH);
1394                 CMD(set_pmksa, SET_PMKSA);
1395                 CMD(del_pmksa, DEL_PMKSA);
1396                 CMD(flush_pmksa, FLUSH_PMKSA);
1397                 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1398                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1399                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1400                 CMD(mgmt_tx, FRAME);
1401                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1402                 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1403                         i++;
1404                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1405                                 goto nla_put_failure;
1406                 }
1407                 if (dev->ops->set_monitor_channel || dev->ops->start_ap ||
1408                     dev->ops->join_mesh) {
1409                         i++;
1410                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1411                                 goto nla_put_failure;
1412                 }
1413                 CMD(set_wds_peer, SET_WDS_PEER);
1414                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1415                         CMD(tdls_mgmt, TDLS_MGMT);
1416                         CMD(tdls_oper, TDLS_OPER);
1417                 }
1418                 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1419                         CMD(sched_scan_start, START_SCHED_SCAN);
1420                 CMD(probe_client, PROBE_CLIENT);
1421                 CMD(set_noack_map, SET_NOACK_MAP);
1422                 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1423                         i++;
1424                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1425                                 goto nla_put_failure;
1426                 }
1427                 CMD(start_p2p_device, START_P2P_DEVICE);
1428                 CMD(set_mcast_rate, SET_MCAST_RATE);
1429                 if (state->split) {
1430                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1431                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1432                         if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1433                                 CMD(channel_switch, CHANNEL_SWITCH);
1434                 }
1435
1436 #ifdef CONFIG_NL80211_TESTMODE
1437                 CMD(testmode_cmd, TESTMODE);
1438 #endif
1439
1440 #undef CMD
1441
1442                 if (dev->ops->connect || dev->ops->auth) {
1443                         i++;
1444                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1445                                 goto nla_put_failure;
1446                 }
1447
1448                 if (dev->ops->disconnect || dev->ops->deauth) {
1449                         i++;
1450                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1451                                 goto nla_put_failure;
1452                 }
1453
1454                 nla_nest_end(msg, nl_cmds);
1455                 state->split_start++;
1456                 if (state->split)
1457                         break;
1458         case 5:
1459                 if (dev->ops->remain_on_channel &&
1460                     (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1461                     nla_put_u32(msg,
1462                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1463                                 dev->wiphy.max_remain_on_channel_duration))
1464                         goto nla_put_failure;
1465
1466                 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1467                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1468                         goto nla_put_failure;
1469
1470                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1471                         goto nla_put_failure;
1472                 state->split_start++;
1473                 if (state->split)
1474                         break;
1475         case 6:
1476 #ifdef CONFIG_PM
1477                 if (nl80211_send_wowlan(msg, dev, state->split))
1478                         goto nla_put_failure;
1479                 state->split_start++;
1480                 if (state->split)
1481                         break;
1482 #else
1483                 state->split_start++;
1484 #endif
1485         case 7:
1486                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1487                                         dev->wiphy.software_iftypes))
1488                         goto nla_put_failure;
1489
1490                 if (nl80211_put_iface_combinations(&dev->wiphy, msg,
1491                                                    state->split))
1492                         goto nla_put_failure;
1493
1494                 state->split_start++;
1495                 if (state->split)
1496                         break;
1497         case 8:
1498                 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1499                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1500                                 dev->wiphy.ap_sme_capa))
1501                         goto nla_put_failure;
1502
1503                 features = dev->wiphy.features;
1504                 /*
1505                  * We can only add the per-channel limit information if the
1506                  * dump is split, otherwise it makes it too big. Therefore
1507                  * only advertise it in that case.
1508                  */
1509                 if (state->split)
1510                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1511                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1512                         goto nla_put_failure;
1513
1514                 if (dev->wiphy.ht_capa_mod_mask &&
1515                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1516                             sizeof(*dev->wiphy.ht_capa_mod_mask),
1517                             dev->wiphy.ht_capa_mod_mask))
1518                         goto nla_put_failure;
1519
1520                 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1521                     dev->wiphy.max_acl_mac_addrs &&
1522                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1523                                 dev->wiphy.max_acl_mac_addrs))
1524                         goto nla_put_failure;
1525
1526                 /*
1527                  * Any information below this point is only available to
1528                  * applications that can deal with it being split. This
1529                  * helps ensure that newly added capabilities don't break
1530                  * older tools by overrunning their buffers.
1531                  *
1532                  * We still increment split_start so that in the split
1533                  * case we'll continue with more data in the next round,
1534                  * but break unconditionally so unsplit data stops here.
1535                  */
1536                 state->split_start++;
1537                 break;
1538         case 9:
1539                 if (dev->wiphy.extended_capabilities &&
1540                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1541                              dev->wiphy.extended_capabilities_len,
1542                              dev->wiphy.extended_capabilities) ||
1543                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1544                              dev->wiphy.extended_capabilities_len,
1545                              dev->wiphy.extended_capabilities_mask)))
1546                         goto nla_put_failure;
1547
1548                 if (dev->wiphy.vht_capa_mod_mask &&
1549                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1550                             sizeof(*dev->wiphy.vht_capa_mod_mask),
1551                             dev->wiphy.vht_capa_mod_mask))
1552                         goto nla_put_failure;
1553
1554                 state->split_start++;
1555                 break;
1556         case 10:
1557                 if (nl80211_send_coalesce(msg, dev))
1558                         goto nla_put_failure;
1559
1560                 /* done */
1561                 state->split_start = 0;
1562                 break;
1563         }
1564         return genlmsg_end(msg, hdr);
1565
1566  nla_put_failure:
1567         genlmsg_cancel(msg, hdr);
1568         return -EMSGSIZE;
1569 }
1570
1571 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1572                                     struct netlink_callback *cb,
1573                                     struct nl80211_dump_wiphy_state *state)
1574 {
1575         struct nlattr **tb = nl80211_fam.attrbuf;
1576         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1577                               tb, nl80211_fam.maxattr, nl80211_policy);
1578         /* ignore parse errors for backward compatibility */
1579         if (ret)
1580                 return 0;
1581
1582         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1583         if (tb[NL80211_ATTR_WIPHY])
1584                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1585         if (tb[NL80211_ATTR_WDEV])
1586                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1587         if (tb[NL80211_ATTR_IFINDEX]) {
1588                 struct net_device *netdev;
1589                 struct cfg80211_registered_device *rdev;
1590                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1591
1592                 netdev = dev_get_by_index(sock_net(skb->sk), ifidx);
1593                 if (!netdev)
1594                         return -ENODEV;
1595                 if (netdev->ieee80211_ptr) {
1596                         rdev = wiphy_to_dev(
1597                                 netdev->ieee80211_ptr->wiphy);
1598                         state->filter_wiphy = rdev->wiphy_idx;
1599                 }
1600                 dev_put(netdev);
1601         }
1602
1603         return 0;
1604 }
1605
1606 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1607 {
1608         int idx = 0, ret;
1609         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1610         struct cfg80211_registered_device *dev;
1611
1612         rtnl_lock();
1613         if (!state) {
1614                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1615                 if (!state) {
1616                         rtnl_unlock();
1617                         return -ENOMEM;
1618                 }
1619                 state->filter_wiphy = -1;
1620                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1621                 if (ret) {
1622                         kfree(state);
1623                         rtnl_unlock();
1624                         return ret;
1625                 }
1626                 cb->args[0] = (long)state;
1627         }
1628
1629         list_for_each_entry(dev, &cfg80211_rdev_list, list) {
1630                 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk)))
1631                         continue;
1632                 if (++idx <= state->start)
1633                         continue;
1634                 if (state->filter_wiphy != -1 &&
1635                     state->filter_wiphy != dev->wiphy_idx)
1636                         continue;
1637                 /* attempt to fit multiple wiphy data chunks into the skb */
1638                 do {
1639                         ret = nl80211_send_wiphy(dev, skb,
1640                                                  NETLINK_CB(cb->skb).portid,
1641                                                  cb->nlh->nlmsg_seq,
1642                                                  NLM_F_MULTI, state);
1643                         if (ret < 0) {
1644                                 /*
1645                                  * If sending the wiphy data didn't fit (ENOBUFS
1646                                  * or EMSGSIZE returned), this SKB is still
1647                                  * empty (so it's not too big because another
1648                                  * wiphy dataset is already in the skb) and
1649                                  * we've not tried to adjust the dump allocation
1650                                  * yet ... then adjust the alloc size to be
1651                                  * bigger, and return 1 but with the empty skb.
1652                                  * This results in an empty message being RX'ed
1653                                  * in userspace, but that is ignored.
1654                                  *
1655                                  * We can then retry with the larger buffer.
1656                                  */
1657                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1658                                     !skb->len &&
1659                                     cb->min_dump_alloc < 4096) {
1660                                         cb->min_dump_alloc = 4096;
1661                                         rtnl_unlock();
1662                                         return 1;
1663                                 }
1664                                 idx--;
1665                                 break;
1666                         }
1667                 } while (state->split_start > 0);
1668                 break;
1669         }
1670         rtnl_unlock();
1671
1672         state->start = idx;
1673
1674         return skb->len;
1675 }
1676
1677 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1678 {
1679         kfree((void *)cb->args[0]);
1680         return 0;
1681 }
1682
1683 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1684 {
1685         struct sk_buff *msg;
1686         struct cfg80211_registered_device *dev = info->user_ptr[0];
1687         struct nl80211_dump_wiphy_state state = {};
1688
1689         msg = nlmsg_new(4096, GFP_KERNEL);
1690         if (!msg)
1691                 return -ENOMEM;
1692
1693         if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0,
1694                                &state) < 0) {
1695                 nlmsg_free(msg);
1696                 return -ENOBUFS;
1697         }
1698
1699         return genlmsg_reply(msg, info);
1700 }
1701
1702 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1703         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1704         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1705         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1706         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1707         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1708 };
1709
1710 static int parse_txq_params(struct nlattr *tb[],
1711                             struct ieee80211_txq_params *txq_params)
1712 {
1713         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1714             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1715             !tb[NL80211_TXQ_ATTR_AIFS])
1716                 return -EINVAL;
1717
1718         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1719         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1720         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1721         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1722         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1723
1724         if (txq_params->ac >= NL80211_NUM_ACS)
1725                 return -EINVAL;
1726
1727         return 0;
1728 }
1729
1730 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1731 {
1732         /*
1733          * You can only set the channel explicitly for WDS interfaces,
1734          * all others have their channel managed via their respective
1735          * "establish a connection" command (connect, join, ...)
1736          *
1737          * For AP/GO and mesh mode, the channel can be set with the
1738          * channel userspace API, but is only stored and passed to the
1739          * low-level driver when the AP starts or the mesh is joined.
1740          * This is for backward compatibility, userspace can also give
1741          * the channel in the start-ap or join-mesh commands instead.
1742          *
1743          * Monitors are special as they are normally slaved to
1744          * whatever else is going on, so they have their own special
1745          * operation to set the monitor channel if possible.
1746          */
1747         return !wdev ||
1748                 wdev->iftype == NL80211_IFTYPE_AP ||
1749                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1750                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1751                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1752 }
1753
1754 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1755                                  struct genl_info *info,
1756                                  struct cfg80211_chan_def *chandef)
1757 {
1758         u32 control_freq;
1759
1760         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1761                 return -EINVAL;
1762
1763         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1764
1765         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1766         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1767         chandef->center_freq1 = control_freq;
1768         chandef->center_freq2 = 0;
1769
1770         /* Primary channel not allowed */
1771         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1772                 return -EINVAL;
1773
1774         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1775                 enum nl80211_channel_type chantype;
1776
1777                 chantype = nla_get_u32(
1778                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1779
1780                 switch (chantype) {
1781                 case NL80211_CHAN_NO_HT:
1782                 case NL80211_CHAN_HT20:
1783                 case NL80211_CHAN_HT40PLUS:
1784                 case NL80211_CHAN_HT40MINUS:
1785                         cfg80211_chandef_create(chandef, chandef->chan,
1786                                                 chantype);
1787                         break;
1788                 default:
1789                         return -EINVAL;
1790                 }
1791         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1792                 chandef->width =
1793                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1794                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1795                         chandef->center_freq1 =
1796                                 nla_get_u32(
1797                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1798                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1799                         chandef->center_freq2 =
1800                                 nla_get_u32(
1801                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1802         }
1803
1804         if (!cfg80211_chandef_valid(chandef))
1805                 return -EINVAL;
1806
1807         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1808                                      IEEE80211_CHAN_DISABLED))
1809                 return -EINVAL;
1810
1811         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1812              chandef->width == NL80211_CHAN_WIDTH_10) &&
1813             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1814                 return -EINVAL;
1815
1816         return 0;
1817 }
1818
1819 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1820                                  struct wireless_dev *wdev,
1821                                  struct genl_info *info)
1822 {
1823         struct cfg80211_chan_def chandef;
1824         int result;
1825         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1826
1827         if (wdev)
1828                 iftype = wdev->iftype;
1829
1830         if (!nl80211_can_set_dev_channel(wdev))
1831                 return -EOPNOTSUPP;
1832
1833         result = nl80211_parse_chandef(rdev, info, &chandef);
1834         if (result)
1835                 return result;
1836
1837         switch (iftype) {
1838         case NL80211_IFTYPE_AP:
1839         case NL80211_IFTYPE_P2P_GO:
1840                 if (wdev->beacon_interval) {
1841                         result = -EBUSY;
1842                         break;
1843                 }
1844                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) {
1845                         result = -EINVAL;
1846                         break;
1847                 }
1848                 wdev->preset_chandef = chandef;
1849                 result = 0;
1850                 break;
1851         case NL80211_IFTYPE_MESH_POINT:
1852                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
1853                 break;
1854         case NL80211_IFTYPE_MONITOR:
1855                 result = cfg80211_set_monitor_channel(rdev, &chandef);
1856                 break;
1857         default:
1858                 result = -EINVAL;
1859         }
1860
1861         return result;
1862 }
1863
1864 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
1865 {
1866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1867         struct net_device *netdev = info->user_ptr[1];
1868
1869         return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);
1870 }
1871
1872 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
1873 {
1874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1875         struct net_device *dev = info->user_ptr[1];
1876         struct wireless_dev *wdev = dev->ieee80211_ptr;
1877         const u8 *bssid;
1878
1879         if (!info->attrs[NL80211_ATTR_MAC])
1880                 return -EINVAL;
1881
1882         if (netif_running(dev))
1883                 return -EBUSY;
1884
1885         if (!rdev->ops->set_wds_peer)
1886                 return -EOPNOTSUPP;
1887
1888         if (wdev->iftype != NL80211_IFTYPE_WDS)
1889                 return -EOPNOTSUPP;
1890
1891         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
1892         return rdev_set_wds_peer(rdev, dev, bssid);
1893 }
1894
1895
1896 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
1897 {
1898         struct cfg80211_registered_device *rdev;
1899         struct net_device *netdev = NULL;
1900         struct wireless_dev *wdev;
1901         int result = 0, rem_txq_params = 0;
1902         struct nlattr *nl_txq_params;
1903         u32 changed;
1904         u8 retry_short = 0, retry_long = 0;
1905         u32 frag_threshold = 0, rts_threshold = 0;
1906         u8 coverage_class = 0;
1907
1908         ASSERT_RTNL();
1909
1910         /*
1911          * Try to find the wiphy and netdev. Normally this
1912          * function shouldn't need the netdev, but this is
1913          * done for backward compatibility -- previously
1914          * setting the channel was done per wiphy, but now
1915          * it is per netdev. Previous userland like hostapd
1916          * also passed a netdev to set_wiphy, so that it is
1917          * possible to let that go to the right netdev!
1918          */
1919
1920         if (info->attrs[NL80211_ATTR_IFINDEX]) {
1921                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
1922
1923                 netdev = dev_get_by_index(genl_info_net(info), ifindex);
1924                 if (netdev && netdev->ieee80211_ptr)
1925                         rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy);
1926                 else
1927                         netdev = NULL;
1928         }
1929
1930         if (!netdev) {
1931                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
1932                                                   info->attrs);
1933                 if (IS_ERR(rdev))
1934                         return PTR_ERR(rdev);
1935                 wdev = NULL;
1936                 netdev = NULL;
1937                 result = 0;
1938         } else
1939                 wdev = netdev->ieee80211_ptr;
1940
1941         /*
1942          * end workaround code, by now the rdev is available
1943          * and locked, and wdev may or may not be NULL.
1944          */
1945
1946         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
1947                 result = cfg80211_dev_rename(
1948                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
1949
1950         if (result)
1951                 goto bad_res;
1952
1953         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
1954                 struct ieee80211_txq_params txq_params;
1955                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
1956
1957                 if (!rdev->ops->set_txq_params) {
1958                         result = -EOPNOTSUPP;
1959                         goto bad_res;
1960                 }
1961
1962                 if (!netdev) {
1963                         result = -EINVAL;
1964                         goto bad_res;
1965                 }
1966
1967                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
1968                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
1969                         result = -EINVAL;
1970                         goto bad_res;
1971                 }
1972
1973                 if (!netif_running(netdev)) {
1974                         result = -ENETDOWN;
1975                         goto bad_res;
1976                 }
1977
1978                 nla_for_each_nested(nl_txq_params,
1979                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
1980                                     rem_txq_params) {
1981                         nla_parse(tb, NL80211_TXQ_ATTR_MAX,
1982                                   nla_data(nl_txq_params),
1983                                   nla_len(nl_txq_params),
1984                                   txq_params_policy);
1985                         result = parse_txq_params(tb, &txq_params);
1986                         if (result)
1987                                 goto bad_res;
1988
1989                         result = rdev_set_txq_params(rdev, netdev,
1990                                                      &txq_params);
1991                         if (result)
1992                                 goto bad_res;
1993                 }
1994         }
1995
1996         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
1997                 result = __nl80211_set_channel(rdev,
1998                                 nl80211_can_set_dev_channel(wdev) ? wdev : NULL,
1999                                 info);
2000                 if (result)
2001                         goto bad_res;
2002         }
2003
2004         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2005                 struct wireless_dev *txp_wdev = wdev;
2006                 enum nl80211_tx_power_setting type;
2007                 int idx, mbm = 0;
2008
2009                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2010                         txp_wdev = NULL;
2011
2012                 if (!rdev->ops->set_tx_power) {
2013                         result = -EOPNOTSUPP;
2014                         goto bad_res;
2015                 }
2016
2017                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2018                 type = nla_get_u32(info->attrs[idx]);
2019
2020                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2021                     (type != NL80211_TX_POWER_AUTOMATIC)) {
2022                         result = -EINVAL;
2023                         goto bad_res;
2024                 }
2025
2026                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2027                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2028                         mbm = nla_get_u32(info->attrs[idx]);
2029                 }
2030
2031                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2032                 if (result)
2033                         goto bad_res;
2034         }
2035
2036         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2037             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2038                 u32 tx_ant, rx_ant;
2039                 if ((!rdev->wiphy.available_antennas_tx &&
2040                      !rdev->wiphy.available_antennas_rx) ||
2041                     !rdev->ops->set_antenna) {
2042                         result = -EOPNOTSUPP;
2043                         goto bad_res;
2044                 }
2045
2046                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2047                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2048
2049                 /* reject antenna configurations which don't match the
2050                  * available antenna masks, except for the "all" mask */
2051                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2052                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
2053                         result = -EINVAL;
2054                         goto bad_res;
2055                 }
2056
2057                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2058                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2059
2060                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2061                 if (result)
2062                         goto bad_res;
2063         }
2064
2065         changed = 0;
2066
2067         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2068                 retry_short = nla_get_u8(
2069                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2070                 if (retry_short == 0) {
2071                         result = -EINVAL;
2072                         goto bad_res;
2073                 }
2074                 changed |= WIPHY_PARAM_RETRY_SHORT;
2075         }
2076
2077         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2078                 retry_long = nla_get_u8(
2079                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2080                 if (retry_long == 0) {
2081                         result = -EINVAL;
2082                         goto bad_res;
2083                 }
2084                 changed |= WIPHY_PARAM_RETRY_LONG;
2085         }
2086
2087         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2088                 frag_threshold = nla_get_u32(
2089                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2090                 if (frag_threshold < 256) {
2091                         result = -EINVAL;
2092                         goto bad_res;
2093                 }
2094                 if (frag_threshold != (u32) -1) {
2095                         /*
2096                          * Fragments (apart from the last one) are required to
2097                          * have even length. Make the fragmentation code
2098                          * simpler by stripping LSB should someone try to use
2099                          * odd threshold value.
2100                          */
2101                         frag_threshold &= ~0x1;
2102                 }
2103                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2104         }
2105
2106         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2107                 rts_threshold = nla_get_u32(
2108                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2109                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2110         }
2111
2112         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2113                 coverage_class = nla_get_u8(
2114                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2115                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2116         }
2117
2118         if (changed) {
2119                 u8 old_retry_short, old_retry_long;
2120                 u32 old_frag_threshold, old_rts_threshold;
2121                 u8 old_coverage_class;
2122
2123                 if (!rdev->ops->set_wiphy_params) {
2124                         result = -EOPNOTSUPP;
2125                         goto bad_res;
2126                 }
2127
2128                 old_retry_short = rdev->wiphy.retry_short;
2129                 old_retry_long = rdev->wiphy.retry_long;
2130                 old_frag_threshold = rdev->wiphy.frag_threshold;
2131                 old_rts_threshold = rdev->wiphy.rts_threshold;
2132                 old_coverage_class = rdev->wiphy.coverage_class;
2133
2134                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2135                         rdev->wiphy.retry_short = retry_short;
2136                 if (changed & WIPHY_PARAM_RETRY_LONG)
2137                         rdev->wiphy.retry_long = retry_long;
2138                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2139                         rdev->wiphy.frag_threshold = frag_threshold;
2140                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2141                         rdev->wiphy.rts_threshold = rts_threshold;
2142                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2143                         rdev->wiphy.coverage_class = coverage_class;
2144
2145                 result = rdev_set_wiphy_params(rdev, changed);
2146                 if (result) {
2147                         rdev->wiphy.retry_short = old_retry_short;
2148                         rdev->wiphy.retry_long = old_retry_long;
2149                         rdev->wiphy.frag_threshold = old_frag_threshold;
2150                         rdev->wiphy.rts_threshold = old_rts_threshold;
2151                         rdev->wiphy.coverage_class = old_coverage_class;
2152                 }
2153         }
2154
2155  bad_res:
2156         if (netdev)
2157                 dev_put(netdev);
2158         return result;
2159 }
2160
2161 static inline u64 wdev_id(struct wireless_dev *wdev)
2162 {
2163         return (u64)wdev->identifier |
2164                ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32);
2165 }
2166
2167 static int nl80211_send_chandef(struct sk_buff *msg,
2168                                  struct cfg80211_chan_def *chandef)
2169 {
2170         WARN_ON(!cfg80211_chandef_valid(chandef));
2171
2172         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2173                         chandef->chan->center_freq))
2174                 return -ENOBUFS;
2175         switch (chandef->width) {
2176         case NL80211_CHAN_WIDTH_20_NOHT:
2177         case NL80211_CHAN_WIDTH_20:
2178         case NL80211_CHAN_WIDTH_40:
2179                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2180                                 cfg80211_get_chandef_type(chandef)))
2181                         return -ENOBUFS;
2182                 break;
2183         default:
2184                 break;
2185         }
2186         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2187                 return -ENOBUFS;
2188         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2189                 return -ENOBUFS;
2190         if (chandef->center_freq2 &&
2191             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2192                 return -ENOBUFS;
2193         return 0;
2194 }
2195
2196 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2197                               struct cfg80211_registered_device *rdev,
2198                               struct wireless_dev *wdev)
2199 {
2200         struct net_device *dev = wdev->netdev;
2201         void *hdr;
2202
2203         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2204         if (!hdr)
2205                 return -1;
2206
2207         if (dev &&
2208             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2209              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2210                 goto nla_put_failure;
2211
2212         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2213             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2214             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2215             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2216             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2217                         rdev->devlist_generation ^
2218                         (cfg80211_rdev_list_generation << 2)))
2219                 goto nla_put_failure;
2220
2221         if (rdev->ops->get_channel) {
2222                 int ret;
2223                 struct cfg80211_chan_def chandef;
2224
2225                 ret = rdev_get_channel(rdev, wdev, &chandef);
2226                 if (ret == 0) {
2227                         if (nl80211_send_chandef(msg, &chandef))
2228                                 goto nla_put_failure;
2229                 }
2230         }
2231
2232         if (wdev->ssid_len) {
2233                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2234                         goto nla_put_failure;
2235         }
2236
2237         return genlmsg_end(msg, hdr);
2238
2239  nla_put_failure:
2240         genlmsg_cancel(msg, hdr);
2241         return -EMSGSIZE;
2242 }
2243
2244 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2245 {
2246         int wp_idx = 0;
2247         int if_idx = 0;
2248         int wp_start = cb->args[0];
2249         int if_start = cb->args[1];
2250         struct cfg80211_registered_device *rdev;
2251         struct wireless_dev *wdev;
2252
2253         rtnl_lock();
2254         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2255                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2256                         continue;
2257                 if (wp_idx < wp_start) {
2258                         wp_idx++;
2259                         continue;
2260                 }
2261                 if_idx = 0;
2262
2263                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2264                         if (if_idx < if_start) {
2265                                 if_idx++;
2266                                 continue;
2267                         }
2268                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2269                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2270                                                rdev, wdev) < 0) {
2271                                 goto out;
2272                         }
2273                         if_idx++;
2274                 }
2275
2276                 wp_idx++;
2277         }
2278  out:
2279         rtnl_unlock();
2280
2281         cb->args[0] = wp_idx;
2282         cb->args[1] = if_idx;
2283
2284         return skb->len;
2285 }
2286
2287 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2288 {
2289         struct sk_buff *msg;
2290         struct cfg80211_registered_device *dev = info->user_ptr[0];
2291         struct wireless_dev *wdev = info->user_ptr[1];
2292
2293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2294         if (!msg)
2295                 return -ENOMEM;
2296
2297         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2298                                dev, wdev) < 0) {
2299                 nlmsg_free(msg);
2300                 return -ENOBUFS;
2301         }
2302
2303         return genlmsg_reply(msg, info);
2304 }
2305
2306 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2307         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2308         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2309         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2310         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2311         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2312         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2313 };
2314
2315 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2316 {
2317         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2318         int flag;
2319
2320         *mntrflags = 0;
2321
2322         if (!nla)
2323                 return -EINVAL;
2324
2325         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2326                              nla, mntr_flags_policy))
2327                 return -EINVAL;
2328
2329         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2330                 if (flags[flag])
2331                         *mntrflags |= (1<<flag);
2332
2333         return 0;
2334 }
2335
2336 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2337                                struct net_device *netdev, u8 use_4addr,
2338                                enum nl80211_iftype iftype)
2339 {
2340         if (!use_4addr) {
2341                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2342                         return -EBUSY;
2343                 return 0;
2344         }
2345
2346         switch (iftype) {
2347         case NL80211_IFTYPE_AP_VLAN:
2348                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2349                         return 0;
2350                 break;
2351         case NL80211_IFTYPE_STATION:
2352                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2353                         return 0;
2354                 break;
2355         default:
2356                 break;
2357         }
2358
2359         return -EOPNOTSUPP;
2360 }
2361
2362 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2363 {
2364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2365         struct vif_params params;
2366         int err;
2367         enum nl80211_iftype otype, ntype;
2368         struct net_device *dev = info->user_ptr[1];
2369         u32 _flags, *flags = NULL;
2370         bool change = false;
2371
2372         memset(&params, 0, sizeof(params));
2373
2374         otype = ntype = dev->ieee80211_ptr->iftype;
2375
2376         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2377                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2378                 if (otype != ntype)
2379                         change = true;
2380                 if (ntype > NL80211_IFTYPE_MAX)
2381                         return -EINVAL;
2382         }
2383
2384         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2385                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2386
2387                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2388                         return -EINVAL;
2389                 if (netif_running(dev))
2390                         return -EBUSY;
2391
2392                 wdev_lock(wdev);
2393                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2394                              IEEE80211_MAX_MESH_ID_LEN);
2395                 wdev->mesh_id_up_len =
2396                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2397                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2398                        wdev->mesh_id_up_len);
2399                 wdev_unlock(wdev);
2400         }
2401
2402         if (info->attrs[NL80211_ATTR_4ADDR]) {
2403                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2404                 change = true;
2405                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2406                 if (err)
2407                         return err;
2408         } else {
2409                 params.use_4addr = -1;
2410         }
2411
2412         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2413                 if (ntype != NL80211_IFTYPE_MONITOR)
2414                         return -EINVAL;
2415                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2416                                           &_flags);
2417                 if (err)
2418                         return err;
2419
2420                 flags = &_flags;
2421                 change = true;
2422         }
2423
2424         if (flags && (*flags & NL80211_MNTR_FLAG_ACTIVE) &&
2425             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2426                 return -EOPNOTSUPP;
2427
2428         if (change)
2429                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2430         else
2431                 err = 0;
2432
2433         if (!err && params.use_4addr != -1)
2434                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2435
2436         return err;
2437 }
2438
2439 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2440 {
2441         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2442         struct vif_params params;
2443         struct wireless_dev *wdev;
2444         struct sk_buff *msg;
2445         int err;
2446         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2447         u32 flags;
2448
2449         memset(&params, 0, sizeof(params));
2450
2451         if (!info->attrs[NL80211_ATTR_IFNAME])
2452                 return -EINVAL;
2453
2454         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2455                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2456                 if (type > NL80211_IFTYPE_MAX)
2457                         return -EINVAL;
2458         }
2459
2460         if (!rdev->ops->add_virtual_intf ||
2461             !(rdev->wiphy.interface_modes & (1 << type)))
2462                 return -EOPNOTSUPP;
2463
2464         if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) {
2465                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2466                            ETH_ALEN);
2467                 if (!is_valid_ether_addr(params.macaddr))
2468                         return -EADDRNOTAVAIL;
2469         }
2470
2471         if (info->attrs[NL80211_ATTR_4ADDR]) {
2472                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2473                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2474                 if (err)
2475                         return err;
2476         }
2477
2478         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2479         if (!msg)
2480                 return -ENOMEM;
2481
2482         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2483                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2484                                   &flags);
2485
2486         if (!err && (flags & NL80211_MNTR_FLAG_ACTIVE) &&
2487             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2488                 return -EOPNOTSUPP;
2489
2490         wdev = rdev_add_virtual_intf(rdev,
2491                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2492                                 type, err ? NULL : &flags, &params);
2493         if (IS_ERR(wdev)) {
2494                 nlmsg_free(msg);
2495                 return PTR_ERR(wdev);
2496         }
2497
2498         switch (type) {
2499         case NL80211_IFTYPE_MESH_POINT:
2500                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2501                         break;
2502                 wdev_lock(wdev);
2503                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2504                              IEEE80211_MAX_MESH_ID_LEN);
2505                 wdev->mesh_id_up_len =
2506                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2507                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2508                        wdev->mesh_id_up_len);
2509                 wdev_unlock(wdev);
2510                 break;
2511         case NL80211_IFTYPE_P2P_DEVICE:
2512                 /*
2513                  * P2P Device doesn't have a netdev, so doesn't go
2514                  * through the netdev notifier and must be added here
2515                  */
2516                 mutex_init(&wdev->mtx);
2517                 INIT_LIST_HEAD(&wdev->event_list);
2518                 spin_lock_init(&wdev->event_lock);
2519                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2520                 spin_lock_init(&wdev->mgmt_registrations_lock);
2521
2522                 wdev->identifier = ++rdev->wdev_id;
2523                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2524                 rdev->devlist_generation++;
2525                 break;
2526         default:
2527                 break;
2528         }
2529
2530         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2531                                rdev, wdev) < 0) {
2532                 nlmsg_free(msg);
2533                 return -ENOBUFS;
2534         }
2535
2536         return genlmsg_reply(msg, info);
2537 }
2538
2539 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2540 {
2541         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2542         struct wireless_dev *wdev = info->user_ptr[1];
2543
2544         if (!rdev->ops->del_virtual_intf)
2545                 return -EOPNOTSUPP;
2546
2547         /*
2548          * If we remove a wireless device without a netdev then clear
2549          * user_ptr[1] so that nl80211_post_doit won't dereference it
2550          * to check if it needs to do dev_put(). Otherwise it crashes
2551          * since the wdev has been freed, unlike with a netdev where
2552          * we need the dev_put() for the netdev to really be freed.
2553          */
2554         if (!wdev->netdev)
2555                 info->user_ptr[1] = NULL;
2556
2557         return rdev_del_virtual_intf(rdev, wdev);
2558 }
2559
2560 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2561 {
2562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2563         struct net_device *dev = info->user_ptr[1];
2564         u16 noack_map;
2565
2566         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2567                 return -EINVAL;
2568
2569         if (!rdev->ops->set_noack_map)
2570                 return -EOPNOTSUPP;
2571
2572         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2573
2574         return rdev_set_noack_map(rdev, dev, noack_map);
2575 }
2576
2577 struct get_key_cookie {
2578         struct sk_buff *msg;
2579         int error;
2580         int idx;
2581 };
2582
2583 static void get_key_callback(void *c, struct key_params *params)
2584 {
2585         struct nlattr *key;
2586         struct get_key_cookie *cookie = c;
2587
2588         if ((params->key &&
2589              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2590                      params->key_len, params->key)) ||
2591             (params->seq &&
2592              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2593                      params->seq_len, params->seq)) ||
2594             (params->cipher &&
2595              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2596                          params->cipher)))
2597                 goto nla_put_failure;
2598
2599         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2600         if (!key)
2601                 goto nla_put_failure;
2602
2603         if ((params->key &&
2604              nla_put(cookie->msg, NL80211_KEY_DATA,
2605                      params->key_len, params->key)) ||
2606             (params->seq &&
2607              nla_put(cookie->msg, NL80211_KEY_SEQ,
2608                      params->seq_len, params->seq)) ||
2609             (params->cipher &&
2610              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2611                          params->cipher)))
2612                 goto nla_put_failure;
2613
2614         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2615                 goto nla_put_failure;
2616
2617         nla_nest_end(cookie->msg, key);
2618
2619         return;
2620  nla_put_failure:
2621         cookie->error = 1;
2622 }
2623
2624 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2625 {
2626         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2627         int err;
2628         struct net_device *dev = info->user_ptr[1];
2629         u8 key_idx = 0;
2630         const u8 *mac_addr = NULL;
2631         bool pairwise;
2632         struct get_key_cookie cookie = {
2633                 .error = 0,
2634         };
2635         void *hdr;
2636         struct sk_buff *msg;
2637
2638         if (info->attrs[NL80211_ATTR_KEY_IDX])
2639                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2640
2641         if (key_idx > 5)
2642                 return -EINVAL;
2643
2644         if (info->attrs[NL80211_ATTR_MAC])
2645                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2646
2647         pairwise = !!mac_addr;
2648         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2649                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2650                 if (kt >= NUM_NL80211_KEYTYPES)
2651                         return -EINVAL;
2652                 if (kt != NL80211_KEYTYPE_GROUP &&
2653                     kt != NL80211_KEYTYPE_PAIRWISE)
2654                         return -EINVAL;
2655                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2656         }
2657
2658         if (!rdev->ops->get_key)
2659                 return -EOPNOTSUPP;
2660
2661         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2662         if (!msg)
2663                 return -ENOMEM;
2664
2665         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2666                              NL80211_CMD_NEW_KEY);
2667         if (IS_ERR(hdr))
2668                 return PTR_ERR(hdr);
2669
2670         cookie.msg = msg;
2671         cookie.idx = key_idx;
2672
2673         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2674             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2675                 goto nla_put_failure;
2676         if (mac_addr &&
2677             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2678                 goto nla_put_failure;
2679
2680         if (pairwise && mac_addr &&
2681             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2682                 return -ENOENT;
2683
2684         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2685                            get_key_callback);
2686
2687         if (err)
2688                 goto free_msg;
2689
2690         if (cookie.error)
2691                 goto nla_put_failure;
2692
2693         genlmsg_end(msg, hdr);
2694         return genlmsg_reply(msg, info);
2695
2696  nla_put_failure:
2697         err = -ENOBUFS;
2698  free_msg:
2699         nlmsg_free(msg);
2700         return err;
2701 }
2702
2703 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2704 {
2705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2706         struct key_parse key;
2707         int err;
2708         struct net_device *dev = info->user_ptr[1];
2709
2710         err = nl80211_parse_key(info, &key);
2711         if (err)
2712                 return err;
2713
2714         if (key.idx < 0)
2715                 return -EINVAL;
2716
2717         /* only support setting default key */
2718         if (!key.def && !key.defmgmt)
2719                 return -EINVAL;
2720
2721         wdev_lock(dev->ieee80211_ptr);
2722
2723         if (key.def) {
2724                 if (!rdev->ops->set_default_key) {
2725                         err = -EOPNOTSUPP;
2726                         goto out;
2727                 }
2728
2729                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2730                 if (err)
2731                         goto out;
2732
2733                 err = rdev_set_default_key(rdev, dev, key.idx,
2734                                                  key.def_uni, key.def_multi);
2735
2736                 if (err)
2737                         goto out;
2738
2739 #ifdef CONFIG_CFG80211_WEXT
2740                 dev->ieee80211_ptr->wext.default_key = key.idx;
2741 #endif
2742         } else {
2743                 if (key.def_uni || !key.def_multi) {
2744                         err = -EINVAL;
2745                         goto out;
2746                 }
2747
2748                 if (!rdev->ops->set_default_mgmt_key) {
2749                         err = -EOPNOTSUPP;
2750                         goto out;
2751                 }
2752
2753                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2754                 if (err)
2755                         goto out;
2756
2757                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2758                 if (err)
2759                         goto out;
2760
2761 #ifdef CONFIG_CFG80211_WEXT
2762                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2763 #endif
2764         }
2765
2766  out:
2767         wdev_unlock(dev->ieee80211_ptr);
2768
2769         return err;
2770 }
2771
2772 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2773 {
2774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2775         int err;
2776         struct net_device *dev = info->user_ptr[1];
2777         struct key_parse key;
2778         const u8 *mac_addr = NULL;
2779
2780         err = nl80211_parse_key(info, &key);
2781         if (err)
2782                 return err;
2783
2784         if (!key.p.key)
2785                 return -EINVAL;
2786
2787         if (info->attrs[NL80211_ATTR_MAC])
2788                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2789
2790         if (key.type == -1) {
2791                 if (mac_addr)
2792                         key.type = NL80211_KEYTYPE_PAIRWISE;
2793                 else
2794                         key.type = NL80211_KEYTYPE_GROUP;
2795         }
2796
2797         /* for now */
2798         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2799             key.type != NL80211_KEYTYPE_GROUP)
2800                 return -EINVAL;
2801
2802         if (!rdev->ops->add_key)
2803                 return -EOPNOTSUPP;
2804
2805         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2806                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2807                                            mac_addr))
2808                 return -EINVAL;
2809
2810         wdev_lock(dev->ieee80211_ptr);
2811         err = nl80211_key_allowed(dev->ieee80211_ptr);
2812         if (!err)
2813                 err = rdev_add_key(rdev, dev, key.idx,
2814                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2815                                     mac_addr, &key.p);
2816         wdev_unlock(dev->ieee80211_ptr);
2817
2818         return err;
2819 }
2820
2821 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2822 {
2823         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2824         int err;
2825         struct net_device *dev = info->user_ptr[1];
2826         u8 *mac_addr = NULL;
2827         struct key_parse key;
2828
2829         err = nl80211_parse_key(info, &key);
2830         if (err)
2831                 return err;
2832
2833         if (info->attrs[NL80211_ATTR_MAC])
2834                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2835
2836         if (key.type == -1) {
2837                 if (mac_addr)
2838                         key.type = NL80211_KEYTYPE_PAIRWISE;
2839                 else
2840                         key.type = NL80211_KEYTYPE_GROUP;
2841         }
2842
2843         /* for now */
2844         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2845             key.type != NL80211_KEYTYPE_GROUP)
2846                 return -EINVAL;
2847
2848         if (!rdev->ops->del_key)
2849                 return -EOPNOTSUPP;
2850
2851         wdev_lock(dev->ieee80211_ptr);
2852         err = nl80211_key_allowed(dev->ieee80211_ptr);
2853
2854         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
2855             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2856                 err = -ENOENT;
2857
2858         if (!err)
2859                 err = rdev_del_key(rdev, dev, key.idx,
2860                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2861                                    mac_addr);
2862
2863 #ifdef CONFIG_CFG80211_WEXT
2864         if (!err) {
2865                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
2866                         dev->ieee80211_ptr->wext.default_key = -1;
2867                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
2868                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
2869         }
2870 #endif
2871         wdev_unlock(dev->ieee80211_ptr);
2872
2873         return err;
2874 }
2875
2876 /* This function returns an error or the number of nested attributes */
2877 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
2878 {
2879         struct nlattr *attr;
2880         int n_entries = 0, tmp;
2881
2882         nla_for_each_nested(attr, nl_attr, tmp) {
2883                 if (nla_len(attr) != ETH_ALEN)
2884                         return -EINVAL;
2885
2886                 n_entries++;
2887         }
2888
2889         return n_entries;
2890 }
2891
2892 /*
2893  * This function parses ACL information and allocates memory for ACL data.
2894  * On successful return, the calling function is responsible to free the
2895  * ACL buffer returned by this function.
2896  */
2897 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
2898                                                 struct genl_info *info)
2899 {
2900         enum nl80211_acl_policy acl_policy;
2901         struct nlattr *attr;
2902         struct cfg80211_acl_data *acl;
2903         int i = 0, n_entries, tmp;
2904
2905         if (!wiphy->max_acl_mac_addrs)
2906                 return ERR_PTR(-EOPNOTSUPP);
2907
2908         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
2909                 return ERR_PTR(-EINVAL);
2910
2911         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
2912         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
2913             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
2914                 return ERR_PTR(-EINVAL);
2915
2916         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
2917                 return ERR_PTR(-EINVAL);
2918
2919         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
2920         if (n_entries < 0)
2921                 return ERR_PTR(n_entries);
2922
2923         if (n_entries > wiphy->max_acl_mac_addrs)
2924                 return ERR_PTR(-ENOTSUPP);
2925
2926         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
2927                       GFP_KERNEL);
2928         if (!acl)
2929                 return ERR_PTR(-ENOMEM);
2930
2931         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
2932                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
2933                 i++;
2934         }
2935
2936         acl->n_acl_entries = n_entries;
2937         acl->acl_policy = acl_policy;
2938
2939         return acl;
2940 }
2941
2942 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
2943 {
2944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2945         struct net_device *dev = info->user_ptr[1];
2946         struct cfg80211_acl_data *acl;
2947         int err;
2948
2949         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2950             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2951                 return -EOPNOTSUPP;
2952
2953         if (!dev->ieee80211_ptr->beacon_interval)
2954                 return -EINVAL;
2955
2956         acl = parse_acl_data(&rdev->wiphy, info);
2957         if (IS_ERR(acl))
2958                 return PTR_ERR(acl);
2959
2960         err = rdev_set_mac_acl(rdev, dev, acl);
2961
2962         kfree(acl);
2963
2964         return err;
2965 }
2966
2967 static int nl80211_parse_beacon(struct nlattr *attrs[],
2968                                 struct cfg80211_beacon_data *bcn)
2969 {
2970         bool haveinfo = false;
2971
2972         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
2973             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
2974             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
2975             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
2976                 return -EINVAL;
2977
2978         memset(bcn, 0, sizeof(*bcn));
2979
2980         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
2981                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
2982                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
2983                 if (!bcn->head_len)
2984                         return -EINVAL;
2985                 haveinfo = true;
2986         }
2987
2988         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
2989                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
2990                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
2991                 haveinfo = true;
2992         }
2993
2994         if (!haveinfo)
2995                 return -EINVAL;
2996
2997         if (attrs[NL80211_ATTR_IE]) {
2998                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
2999                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3000         }
3001
3002         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3003                 bcn->proberesp_ies =
3004                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3005                 bcn->proberesp_ies_len =
3006                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3007         }
3008
3009         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3010                 bcn->assocresp_ies =
3011                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3012                 bcn->assocresp_ies_len =
3013                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3014         }
3015
3016         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3017                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3018                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3019         }
3020
3021         return 0;
3022 }
3023
3024 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3025                                    struct cfg80211_ap_settings *params)
3026 {
3027         struct wireless_dev *wdev;
3028         bool ret = false;
3029
3030         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3031                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3032                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3033                         continue;
3034
3035                 if (!wdev->preset_chandef.chan)
3036                         continue;
3037
3038                 params->chandef = wdev->preset_chandef;
3039                 ret = true;
3040                 break;
3041         }
3042
3043         return ret;
3044 }
3045
3046 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3047                                     enum nl80211_auth_type auth_type,
3048                                     enum nl80211_commands cmd)
3049 {
3050         if (auth_type > NL80211_AUTHTYPE_MAX)
3051                 return false;
3052
3053         switch (cmd) {
3054         case NL80211_CMD_AUTHENTICATE:
3055                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3056                     auth_type == NL80211_AUTHTYPE_SAE)
3057                         return false;
3058                 return true;
3059         case NL80211_CMD_CONNECT:
3060         case NL80211_CMD_START_AP:
3061                 /* SAE not supported yet */
3062                 if (auth_type == NL80211_AUTHTYPE_SAE)
3063                         return false;
3064                 return true;
3065         default:
3066                 return false;
3067         }
3068 }
3069
3070 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3071 {
3072         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3073         struct net_device *dev = info->user_ptr[1];
3074         struct wireless_dev *wdev = dev->ieee80211_ptr;
3075         struct cfg80211_ap_settings params;
3076         int err;
3077         u8 radar_detect_width = 0;
3078
3079         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3080             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3081                 return -EOPNOTSUPP;
3082
3083         if (!rdev->ops->start_ap)
3084                 return -EOPNOTSUPP;
3085
3086         if (wdev->beacon_interval)
3087                 return -EALREADY;
3088
3089         memset(&params, 0, sizeof(params));
3090
3091         /* these are required for START_AP */
3092         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3093             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3094             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3095                 return -EINVAL;
3096
3097         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3098         if (err)
3099                 return err;
3100
3101         params.beacon_interval =
3102                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3103         params.dtim_period =
3104                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3105
3106         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3107         if (err)
3108                 return err;
3109
3110         /*
3111          * In theory, some of these attributes should be required here
3112          * but since they were not used when the command was originally
3113          * added, keep them optional for old user space programs to let
3114          * them continue to work with drivers that do not need the
3115          * additional information -- drivers must check!
3116          */
3117         if (info->attrs[NL80211_ATTR_SSID]) {
3118                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3119                 params.ssid_len =
3120                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3121                 if (params.ssid_len == 0 ||
3122                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3123                         return -EINVAL;
3124         }
3125
3126         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3127                 params.hidden_ssid = nla_get_u32(
3128                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3129                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3130                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3131                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3132                         return -EINVAL;
3133         }
3134
3135         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3136
3137         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3138                 params.auth_type = nla_get_u32(
3139                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3140                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3141                                              NL80211_CMD_START_AP))
3142                         return -EINVAL;
3143         } else
3144                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3145
3146         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3147                                       NL80211_MAX_NR_CIPHER_SUITES);
3148         if (err)
3149                 return err;
3150
3151         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3152                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3153                         return -EOPNOTSUPP;
3154                 params.inactivity_timeout = nla_get_u16(
3155                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3156         }
3157
3158         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3159                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3160                         return -EINVAL;
3161                 params.p2p_ctwindow =
3162                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3163                 if (params.p2p_ctwindow > 127)
3164                         return -EINVAL;
3165                 if (params.p2p_ctwindow != 0 &&
3166                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3167                         return -EINVAL;
3168         }
3169
3170         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3171                 u8 tmp;
3172
3173                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3174                         return -EINVAL;
3175                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3176                 if (tmp > 1)
3177                         return -EINVAL;
3178                 params.p2p_opp_ps = tmp;
3179                 if (params.p2p_opp_ps != 0 &&
3180                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3181                         return -EINVAL;
3182         }
3183
3184         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3185                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3186                 if (err)
3187                         return err;
3188         } else if (wdev->preset_chandef.chan) {
3189                 params.chandef = wdev->preset_chandef;
3190         } else if (!nl80211_get_ap_channel(rdev, &params))
3191                 return -EINVAL;
3192
3193         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
3194                 return -EINVAL;
3195
3196         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
3197         if (err < 0)
3198                 return err;
3199         if (err) {
3200                 radar_detect_width = BIT(params.chandef.width);
3201                 params.radar_required = true;
3202         }
3203
3204         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
3205                                            params.chandef.chan,
3206                                            CHAN_MODE_SHARED,
3207                                            radar_detect_width);
3208         if (err)
3209                 return err;
3210
3211         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3212                 params.acl = parse_acl_data(&rdev->wiphy, info);
3213                 if (IS_ERR(params.acl))
3214                         return PTR_ERR(params.acl);
3215         }
3216
3217         err = rdev_start_ap(rdev, dev, &params);
3218         if (!err) {
3219                 wdev->preset_chandef = params.chandef;
3220                 wdev->beacon_interval = params.beacon_interval;
3221                 wdev->channel = params.chandef.chan;
3222                 wdev->ssid_len = params.ssid_len;
3223                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3224         }
3225
3226         kfree(params.acl);
3227
3228         return err;
3229 }
3230
3231 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3232 {
3233         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3234         struct net_device *dev = info->user_ptr[1];
3235         struct wireless_dev *wdev = dev->ieee80211_ptr;
3236         struct cfg80211_beacon_data params;
3237         int err;
3238
3239         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3240             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3241                 return -EOPNOTSUPP;
3242
3243         if (!rdev->ops->change_beacon)
3244                 return -EOPNOTSUPP;
3245
3246         if (!wdev->beacon_interval)
3247                 return -EINVAL;
3248
3249         err = nl80211_parse_beacon(info->attrs, &params);
3250         if (err)
3251                 return err;
3252
3253         return rdev_change_beacon(rdev, dev, &params);
3254 }
3255
3256 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3257 {
3258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3259         struct net_device *dev = info->user_ptr[1];
3260
3261         return cfg80211_stop_ap(rdev, dev);
3262 }
3263
3264 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3265         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3266         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3267         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3268         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3269         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3270         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3271 };
3272
3273 static int parse_station_flags(struct genl_info *info,
3274                                enum nl80211_iftype iftype,
3275                                struct station_parameters *params)
3276 {
3277         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3278         struct nlattr *nla;
3279         int flag;
3280
3281         /*
3282          * Try parsing the new attribute first so userspace
3283          * can specify both for older kernels.
3284          */
3285         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3286         if (nla) {
3287                 struct nl80211_sta_flag_update *sta_flags;
3288
3289                 sta_flags = nla_data(nla);
3290                 params->sta_flags_mask = sta_flags->mask;
3291                 params->sta_flags_set = sta_flags->set;
3292                 params->sta_flags_set &= params->sta_flags_mask;
3293                 if ((params->sta_flags_mask |
3294                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3295                         return -EINVAL;
3296                 return 0;
3297         }
3298
3299         /* if present, parse the old attribute */
3300
3301         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3302         if (!nla)
3303                 return 0;
3304
3305         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3306                              nla, sta_flags_policy))
3307                 return -EINVAL;
3308
3309         /*
3310          * Only allow certain flags for interface types so that
3311          * other attributes are silently ignored. Remember that
3312          * this is backward compatibility code with old userspace
3313          * and shouldn't be hit in other cases anyway.
3314          */
3315         switch (iftype) {
3316         case NL80211_IFTYPE_AP:
3317         case NL80211_IFTYPE_AP_VLAN:
3318         case NL80211_IFTYPE_P2P_GO:
3319                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3320                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3321                                          BIT(NL80211_STA_FLAG_WME) |
3322                                          BIT(NL80211_STA_FLAG_MFP);
3323                 break;
3324         case NL80211_IFTYPE_P2P_CLIENT:
3325         case NL80211_IFTYPE_STATION:
3326                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3327                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3328                 break;
3329         case NL80211_IFTYPE_MESH_POINT:
3330                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3331                                          BIT(NL80211_STA_FLAG_MFP) |
3332                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3333         default:
3334                 return -EINVAL;
3335         }
3336
3337         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3338                 if (flags[flag]) {
3339                         params->sta_flags_set |= (1<<flag);
3340
3341                         /* no longer support new API additions in old API */
3342                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3343                                 return -EINVAL;
3344                 }
3345         }
3346
3347         return 0;
3348 }
3349
3350 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3351                                  int attr)
3352 {
3353         struct nlattr *rate;
3354         u32 bitrate;
3355         u16 bitrate_compat;
3356
3357         rate = nla_nest_start(msg, attr);
3358         if (!rate)
3359                 return false;
3360
3361         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3362         bitrate = cfg80211_calculate_bitrate(info);
3363         /* report 16-bit bitrate only if we can */
3364         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3365         if (bitrate > 0 &&
3366             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3367                 return false;
3368         if (bitrate_compat > 0 &&
3369             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3370                 return false;
3371
3372         if (info->flags & RATE_INFO_FLAGS_MCS) {
3373                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3374                         return false;
3375                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3376                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3377                         return false;
3378                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3379                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3380                         return false;
3381         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3382                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3383                         return false;
3384                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3385                         return false;
3386                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3387                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3388                         return false;
3389                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3390                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3391                         return false;
3392                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3393                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3394                         return false;
3395                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3396                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3397                         return false;
3398                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3399                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3400                         return false;
3401         }
3402
3403         nla_nest_end(msg, rate);
3404         return true;
3405 }
3406
3407 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3408                                int id)
3409 {
3410         void *attr;
3411         int i = 0;
3412
3413         if (!mask)
3414                 return true;
3415
3416         attr = nla_nest_start(msg, id);
3417         if (!attr)
3418                 return false;
3419
3420         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3421                 if (!(mask & BIT(i)))
3422                         continue;
3423
3424                 if (nla_put_u8(msg, i, signal[i]))
3425                         return false;
3426         }
3427
3428         nla_nest_end(msg, attr);
3429
3430         return true;
3431 }
3432
3433 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3434                                 int flags,
3435                                 struct cfg80211_registered_device *rdev,
3436                                 struct net_device *dev,
3437                                 const u8 *mac_addr, struct station_info *sinfo)
3438 {
3439         void *hdr;
3440         struct nlattr *sinfoattr, *bss_param;
3441
3442         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3443         if (!hdr)
3444                 return -1;
3445
3446         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3447             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3448             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3449                 goto nla_put_failure;
3450
3451         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3452         if (!sinfoattr)
3453                 goto nla_put_failure;
3454         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3455             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3456                         sinfo->connected_time))
3457                 goto nla_put_failure;
3458         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3459             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3460                         sinfo->inactive_time))
3461                 goto nla_put_failure;
3462         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3463                               STATION_INFO_RX_BYTES64)) &&
3464             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3465                         (u32)sinfo->rx_bytes))
3466                 goto nla_put_failure;
3467         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3468                               STATION_INFO_TX_BYTES64)) &&
3469             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3470                         (u32)sinfo->tx_bytes))
3471                 goto nla_put_failure;
3472         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3473             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3474                         sinfo->rx_bytes))
3475                 goto nla_put_failure;
3476         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3477             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3478                         sinfo->tx_bytes))
3479                 goto nla_put_failure;
3480         if ((sinfo->filled & STATION_INFO_LLID) &&
3481             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3482                 goto nla_put_failure;
3483         if ((sinfo->filled & STATION_INFO_PLID) &&
3484             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3485                 goto nla_put_failure;
3486         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3487             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3488                        sinfo->plink_state))
3489                 goto nla_put_failure;
3490         switch (rdev->wiphy.signal_type) {
3491         case CFG80211_SIGNAL_TYPE_MBM:
3492                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3493                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3494                                sinfo->signal))
3495                         goto nla_put_failure;
3496                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3497                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3498                                sinfo->signal_avg))
3499                         goto nla_put_failure;
3500                 break;
3501         default:
3502                 break;
3503         }
3504         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3505                 if (!nl80211_put_signal(msg, sinfo->chains,
3506                                         sinfo->chain_signal,
3507                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3508                         goto nla_put_failure;
3509         }
3510         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3511                 if (!nl80211_put_signal(msg, sinfo->chains,
3512                                         sinfo->chain_signal_avg,
3513                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3514                         goto nla_put_failure;
3515         }
3516         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3517                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3518                                           NL80211_STA_INFO_TX_BITRATE))
3519                         goto nla_put_failure;
3520         }
3521         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3522                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3523                                           NL80211_STA_INFO_RX_BITRATE))
3524                         goto nla_put_failure;
3525         }
3526         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3527             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3528                         sinfo->rx_packets))
3529                 goto nla_put_failure;
3530         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3531             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3532                         sinfo->tx_packets))
3533                 goto nla_put_failure;
3534         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3535             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3536                         sinfo->tx_retries))
3537                 goto nla_put_failure;
3538         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3539             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3540                         sinfo->tx_failed))
3541                 goto nla_put_failure;
3542         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3543             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3544                         sinfo->beacon_loss_count))
3545                 goto nla_put_failure;
3546         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3547             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3548                         sinfo->local_pm))
3549                 goto nla_put_failure;
3550         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3551             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3552                         sinfo->peer_pm))
3553                 goto nla_put_failure;
3554         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3555             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3556                         sinfo->nonpeer_pm))
3557                 goto nla_put_failure;
3558         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3559                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3560                 if (!bss_param)
3561                         goto nla_put_failure;
3562
3563                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3564                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3565                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3566                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3567                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3568                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3569                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3570                                sinfo->bss_param.dtim_period) ||
3571                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3572                                 sinfo->bss_param.beacon_interval))
3573                         goto nla_put_failure;
3574
3575                 nla_nest_end(msg, bss_param);
3576         }
3577         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3578             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3579                     sizeof(struct nl80211_sta_flag_update),
3580                     &sinfo->sta_flags))
3581                 goto nla_put_failure;
3582         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3583                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3584                             sinfo->t_offset))
3585                 goto nla_put_failure;
3586         nla_nest_end(msg, sinfoattr);
3587
3588         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3589             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3590                     sinfo->assoc_req_ies))
3591                 goto nla_put_failure;
3592
3593         return genlmsg_end(msg, hdr);
3594
3595  nla_put_failure:
3596         genlmsg_cancel(msg, hdr);
3597         return -EMSGSIZE;
3598 }
3599
3600 static int nl80211_dump_station(struct sk_buff *skb,
3601                                 struct netlink_callback *cb)
3602 {
3603         struct station_info sinfo;
3604         struct cfg80211_registered_device *dev;
3605         struct wireless_dev *wdev;
3606         u8 mac_addr[ETH_ALEN];
3607         int sta_idx = cb->args[2];
3608         int err;
3609
3610         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
3611         if (err)
3612                 return err;
3613
3614         if (!wdev->netdev) {
3615                 err = -EINVAL;
3616                 goto out_err;
3617         }
3618
3619         if (!dev->ops->dump_station) {
3620                 err = -EOPNOTSUPP;
3621                 goto out_err;
3622         }
3623
3624         while (1) {
3625                 memset(&sinfo, 0, sizeof(sinfo));
3626                 err = rdev_dump_station(dev, wdev->netdev, sta_idx,
3627                                         mac_addr, &sinfo);
3628                 if (err == -ENOENT)
3629                         break;
3630                 if (err)
3631                         goto out_err;
3632
3633                 if (nl80211_send_station(skb,
3634                                 NETLINK_CB(cb->skb).portid,
3635                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3636                                 dev, wdev->netdev, mac_addr,
3637                                 &sinfo) < 0)
3638                         goto out;
3639
3640                 sta_idx++;
3641         }
3642
3643
3644  out:
3645         cb->args[2] = sta_idx;
3646         err = skb->len;
3647  out_err:
3648         nl80211_finish_wdev_dump(dev);
3649
3650         return err;
3651 }
3652
3653 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3654 {
3655         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3656         struct net_device *dev = info->user_ptr[1];
3657         struct station_info sinfo;
3658         struct sk_buff *msg;
3659         u8 *mac_addr = NULL;
3660         int err;
3661
3662         memset(&sinfo, 0, sizeof(sinfo));
3663
3664         if (!info->attrs[NL80211_ATTR_MAC])
3665                 return -EINVAL;
3666
3667         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3668
3669         if (!rdev->ops->get_station)
3670                 return -EOPNOTSUPP;
3671
3672         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3673         if (err)
3674                 return err;
3675
3676         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3677         if (!msg)
3678                 return -ENOMEM;
3679
3680         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3681                                  rdev, dev, mac_addr, &sinfo) < 0) {
3682                 nlmsg_free(msg);
3683                 return -ENOBUFS;
3684         }
3685
3686         return genlmsg_reply(msg, info);
3687 }
3688
3689 int cfg80211_check_station_change(struct wiphy *wiphy,
3690                                   struct station_parameters *params,
3691                                   enum cfg80211_station_type statype)
3692 {
3693         if (params->listen_interval != -1)
3694                 return -EINVAL;
3695         if (params->aid)
3696                 return -EINVAL;
3697
3698         /* When you run into this, adjust the code below for the new flag */
3699         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3700
3701         switch (statype) {
3702         case CFG80211_STA_MESH_PEER_KERNEL:
3703         case CFG80211_STA_MESH_PEER_USER:
3704                 /*
3705                  * No ignoring the TDLS flag here -- the userspace mesh
3706                  * code doesn't have the bug of including TDLS in the
3707                  * mask everywhere.
3708                  */
3709                 if (params->sta_flags_mask &
3710                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3711                                   BIT(NL80211_STA_FLAG_MFP) |
3712                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3713                         return -EINVAL;
3714                 break;
3715         case CFG80211_STA_TDLS_PEER_SETUP:
3716         case CFG80211_STA_TDLS_PEER_ACTIVE:
3717                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3718                         return -EINVAL;
3719                 /* ignore since it can't change */
3720                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3721                 break;
3722         default:
3723                 /* disallow mesh-specific things */
3724                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3725                         return -EINVAL;
3726                 if (params->local_pm)
3727                         return -EINVAL;
3728                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3729                         return -EINVAL;
3730         }
3731
3732         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3733             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3734                 /* TDLS can't be set, ... */
3735                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3736                         return -EINVAL;
3737                 /*
3738                  * ... but don't bother the driver with it. This works around
3739                  * a hostapd/wpa_supplicant issue -- it always includes the
3740                  * TLDS_PEER flag in the mask even for AP mode.
3741                  */
3742                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3743         }
3744
3745         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3746                 /* reject other things that can't change */
3747                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3748                         return -EINVAL;
3749                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3750                         return -EINVAL;
3751                 if (params->supported_rates)
3752                         return -EINVAL;
3753                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3754                         return -EINVAL;
3755         }
3756
3757         if (statype != CFG80211_STA_AP_CLIENT) {
3758                 if (params->vlan)
3759                         return -EINVAL;
3760         }
3761
3762         switch (statype) {
3763         case CFG80211_STA_AP_MLME_CLIENT:
3764                 /* Use this only for authorizing/unauthorizing a station */
3765                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3766                         return -EOPNOTSUPP;
3767                 break;
3768         case CFG80211_STA_AP_CLIENT:
3769                 /* accept only the listed bits */
3770                 if (params->sta_flags_mask &
3771                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3772                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3773                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3774                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3775                                   BIT(NL80211_STA_FLAG_WME) |
3776                                   BIT(NL80211_STA_FLAG_MFP)))
3777                         return -EINVAL;
3778
3779                 /* but authenticated/associated only if driver handles it */
3780                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3781                     params->sta_flags_mask &
3782                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3783                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3784                         return -EINVAL;
3785                 break;
3786         case CFG80211_STA_IBSS:
3787         case CFG80211_STA_AP_STA:
3788                 /* reject any changes other than AUTHORIZED */
3789                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3790                         return -EINVAL;
3791                 break;
3792         case CFG80211_STA_TDLS_PEER_SETUP:
3793                 /* reject any changes other than AUTHORIZED or WME */
3794                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3795                                                BIT(NL80211_STA_FLAG_WME)))
3796                         return -EINVAL;
3797                 /* force (at least) rates when authorizing */
3798                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3799                     !params->supported_rates)
3800                         return -EINVAL;
3801                 break;
3802         case CFG80211_STA_TDLS_PEER_ACTIVE:
3803                 /* reject any changes */
3804                 return -EINVAL;
3805         case CFG80211_STA_MESH_PEER_KERNEL:
3806                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3807                         return -EINVAL;
3808                 break;
3809         case CFG80211_STA_MESH_PEER_USER:
3810                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3811                         return -EINVAL;
3812                 break;
3813         }
3814
3815         return 0;
3816 }
3817 EXPORT_SYMBOL(cfg80211_check_station_change);
3818
3819 /*
3820  * Get vlan interface making sure it is running and on the right wiphy.
3821  */
3822 static struct net_device *get_vlan(struct genl_info *info,
3823                                    struct cfg80211_registered_device *rdev)
3824 {
3825         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3826         struct net_device *v;
3827         int ret;
3828
3829         if (!vlanattr)
3830                 return NULL;
3831
3832         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
3833         if (!v)
3834                 return ERR_PTR(-ENODEV);
3835
3836         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
3837                 ret = -EINVAL;
3838                 goto error;
3839         }
3840
3841         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
3842             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3843             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3844                 ret = -EINVAL;
3845                 goto error;
3846         }
3847
3848         if (!netif_running(v)) {
3849                 ret = -ENETDOWN;
3850                 goto error;
3851         }
3852
3853         return v;
3854  error:
3855         dev_put(v);
3856         return ERR_PTR(ret);
3857 }
3858
3859 static struct nla_policy
3860 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = {
3861         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
3862         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
3863 };
3864
3865 static int nl80211_parse_sta_wme(struct genl_info *info,
3866                                  struct station_parameters *params)
3867 {
3868         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
3869         struct nlattr *nla;
3870         int err;
3871
3872         /* parse WME attributes if present */
3873         if (!info->attrs[NL80211_ATTR_STA_WME])
3874                 return 0;
3875
3876         nla = info->attrs[NL80211_ATTR_STA_WME];
3877         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
3878                                nl80211_sta_wme_policy);
3879         if (err)
3880                 return err;
3881
3882         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
3883                 params->uapsd_queues = nla_get_u8(
3884                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
3885         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
3886                 return -EINVAL;
3887
3888         if (tb[NL80211_STA_WME_MAX_SP])
3889                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
3890
3891         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
3892                 return -EINVAL;
3893
3894         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
3895
3896         return 0;
3897 }
3898
3899 static int nl80211_set_station_tdls(struct genl_info *info,
3900                                     struct station_parameters *params)
3901 {
3902         /* Dummy STA entry gets updated once the peer capabilities are known */
3903         if (info->attrs[NL80211_ATTR_PEER_AID])
3904                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
3905         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
3906                 params->ht_capa =
3907                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
3908         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
3909                 params->vht_capa =
3910                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
3911
3912         return nl80211_parse_sta_wme(info, params);
3913 }
3914
3915 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
3916 {
3917         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3918         struct net_device *dev = info->user_ptr[1];
3919         struct station_parameters params;
3920         u8 *mac_addr;
3921         int err;
3922
3923         memset(&params, 0, sizeof(params));
3924
3925         params.listen_interval = -1;
3926
3927         if (!rdev->ops->change_station)
3928                 return -EOPNOTSUPP;
3929
3930         if (info->attrs[NL80211_ATTR_STA_AID])
3931                 return -EINVAL;
3932
3933         if (!info->attrs[NL80211_ATTR_MAC])
3934                 return -EINVAL;
3935
3936         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3937
3938         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
3939                 params.supported_rates =
3940                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3941                 params.supported_rates_len =
3942                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
3943         }
3944
3945         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
3946                 params.capability =
3947                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
3948                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
3949         }
3950
3951         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
3952                 params.ext_capab =
3953                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3954                 params.ext_capab_len =
3955                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
3956         }
3957
3958         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
3959                 return -EINVAL;
3960
3961         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
3962                 return -EINVAL;
3963
3964         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
3965                 params.plink_action =
3966                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
3967                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
3968                         return -EINVAL;
3969         }
3970
3971         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
3972                 params.plink_state =
3973                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
3974                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
3975                         return -EINVAL;
3976                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
3977         }
3978
3979         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
3980                 enum nl80211_mesh_power_mode pm = nla_get_u32(
3981                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
3982
3983                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
3984                     pm > NL80211_MESH_POWER_MAX)
3985                         return -EINVAL;
3986
3987                 params.local_pm = pm;
3988         }
3989
3990         /* Include parameters for TDLS peer (will check later) */
3991         err = nl80211_set_station_tdls(info, &params);
3992         if (err)
3993                 return err;
3994
3995         params.vlan = get_vlan(info, rdev);
3996         if (IS_ERR(params.vlan))
3997                 return PTR_ERR(params.vlan);
3998
3999         switch (dev->ieee80211_ptr->iftype) {
4000         case NL80211_IFTYPE_AP:
4001         case NL80211_IFTYPE_AP_VLAN:
4002         case NL80211_IFTYPE_P2P_GO:
4003         case NL80211_IFTYPE_P2P_CLIENT:
4004         case NL80211_IFTYPE_STATION:
4005         case NL80211_IFTYPE_ADHOC:
4006         case NL80211_IFTYPE_MESH_POINT:
4007                 break;
4008         default:
4009                 err = -EOPNOTSUPP;
4010                 goto out_put_vlan;
4011         }
4012
4013         /* driver will call cfg80211_check_station_change() */
4014         err = rdev_change_station(rdev, dev, mac_addr, &params);
4015
4016  out_put_vlan:
4017         if (params.vlan)
4018                 dev_put(params.vlan);
4019
4020         return err;
4021 }
4022
4023 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4024 {
4025         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4026         int err;
4027         struct net_device *dev = info->user_ptr[1];
4028         struct station_parameters params;
4029         u8 *mac_addr = NULL;
4030
4031         memset(&params, 0, sizeof(params));
4032
4033         if (!rdev->ops->add_station)
4034                 return -EOPNOTSUPP;
4035
4036         if (!info->attrs[NL80211_ATTR_MAC])
4037                 return -EINVAL;
4038
4039         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4040                 return -EINVAL;
4041
4042         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4043                 return -EINVAL;
4044
4045         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4046             !info->attrs[NL80211_ATTR_PEER_AID])
4047                 return -EINVAL;
4048
4049         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4050         params.supported_rates =
4051                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4052         params.supported_rates_len =
4053                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4054         params.listen_interval =
4055                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4056
4057         if (info->attrs[NL80211_ATTR_PEER_AID])
4058                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4059         else
4060                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4061         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4062                 return -EINVAL;
4063
4064         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4065                 params.capability =
4066                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4067                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4068         }
4069
4070         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4071                 params.ext_capab =
4072                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4073                 params.ext_capab_len =
4074                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4075         }
4076
4077         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4078                 params.ht_capa =
4079                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4080
4081         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4082                 params.vht_capa =
4083                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4084
4085         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4086                 params.plink_action =
4087                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4088                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4089                         return -EINVAL;
4090         }
4091
4092         err = nl80211_parse_sta_wme(info, &params);
4093         if (err)
4094                 return err;
4095
4096         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4097                 return -EINVAL;
4098
4099         /* When you run into this, adjust the code below for the new flag */
4100         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4101
4102         switch (dev->ieee80211_ptr->iftype) {
4103         case NL80211_IFTYPE_AP:
4104         case NL80211_IFTYPE_AP_VLAN:
4105         case NL80211_IFTYPE_P2P_GO:
4106                 /* ignore WME attributes if iface/sta is not capable */
4107                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4108                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4109                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4110
4111                 /* TDLS peers cannot be added */
4112                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4113                     info->attrs[NL80211_ATTR_PEER_AID])
4114                         return -EINVAL;
4115                 /* but don't bother the driver with it */
4116                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4117
4118                 /* allow authenticated/associated only if driver handles it */
4119                 if (!(rdev->wiphy.features &
4120                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4121                     params.sta_flags_mask &
4122                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4123                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4124                         return -EINVAL;
4125
4126                 /* must be last in here for error handling */
4127                 params.vlan = get_vlan(info, rdev);
4128                 if (IS_ERR(params.vlan))
4129                         return PTR_ERR(params.vlan);
4130                 break;
4131         case NL80211_IFTYPE_MESH_POINT:
4132                 /* ignore uAPSD data */
4133                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4134
4135                 /* associated is disallowed */
4136                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4137                         return -EINVAL;
4138                 /* TDLS peers cannot be added */
4139                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4140                     info->attrs[NL80211_ATTR_PEER_AID])
4141                         return -EINVAL;
4142                 break;
4143         case NL80211_IFTYPE_STATION:
4144         case NL80211_IFTYPE_P2P_CLIENT:
4145                 /* ignore uAPSD data */
4146                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4147
4148                 /* these are disallowed */
4149                 if (params.sta_flags_mask &
4150                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4151                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4152                         return -EINVAL;
4153                 /* Only TDLS peers can be added */
4154                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4155                         return -EINVAL;
4156                 /* Can only add if TDLS ... */
4157                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4158                         return -EOPNOTSUPP;
4159                 /* ... with external setup is supported */
4160                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4161                         return -EOPNOTSUPP;
4162                 /*
4163                  * Older wpa_supplicant versions always mark the TDLS peer
4164                  * as authorized, but it shouldn't yet be.
4165                  */
4166                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4167                 break;
4168         default:
4169                 return -EOPNOTSUPP;
4170         }
4171
4172         /* be aware of params.vlan when changing code here */
4173
4174         err = rdev_add_station(rdev, dev, mac_addr, &params);
4175
4176         if (params.vlan)
4177                 dev_put(params.vlan);
4178         return err;
4179 }
4180
4181 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4182 {
4183         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4184         struct net_device *dev = info->user_ptr[1];
4185         u8 *mac_addr = NULL;
4186
4187         if (info->attrs[NL80211_ATTR_MAC])
4188                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4189
4190         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4191             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4192             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4193             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4194                 return -EINVAL;
4195
4196         if (!rdev->ops->del_station)
4197                 return -EOPNOTSUPP;
4198
4199         return rdev_del_station(rdev, dev, mac_addr);
4200 }
4201
4202 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4203                                 int flags, struct net_device *dev,
4204                                 u8 *dst, u8 *next_hop,
4205                                 struct mpath_info *pinfo)
4206 {
4207         void *hdr;
4208         struct nlattr *pinfoattr;
4209
4210         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4211         if (!hdr)
4212                 return -1;
4213
4214         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4215             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4216             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4217             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4218                 goto nla_put_failure;
4219
4220         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4221         if (!pinfoattr)
4222                 goto nla_put_failure;
4223         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4224             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4225                         pinfo->frame_qlen))
4226                 goto nla_put_failure;
4227         if (((pinfo->filled & MPATH_INFO_SN) &&
4228              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4229             ((pinfo->filled & MPATH_INFO_METRIC) &&
4230              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4231                          pinfo->metric)) ||
4232             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4233              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4234                          pinfo->exptime)) ||
4235             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4236              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4237                         pinfo->flags)) ||
4238             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4239              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4240                          pinfo->discovery_timeout)) ||
4241             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4242              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4243                         pinfo->discovery_retries)))
4244                 goto nla_put_failure;
4245
4246         nla_nest_end(msg, pinfoattr);
4247
4248         return genlmsg_end(msg, hdr);
4249
4250  nla_put_failure:
4251         genlmsg_cancel(msg, hdr);
4252         return -EMSGSIZE;
4253 }
4254
4255 static int nl80211_dump_mpath(struct sk_buff *skb,
4256                               struct netlink_callback *cb)
4257 {
4258         struct mpath_info pinfo;
4259         struct cfg80211_registered_device *dev;
4260         struct wireless_dev *wdev;
4261         u8 dst[ETH_ALEN];
4262         u8 next_hop[ETH_ALEN];
4263         int path_idx = cb->args[2];
4264         int err;
4265
4266         err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
4267         if (err)
4268                 return err;
4269
4270         if (!dev->ops->dump_mpath) {
4271                 err = -EOPNOTSUPP;
4272                 goto out_err;
4273         }
4274
4275         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4276                 err = -EOPNOTSUPP;
4277                 goto out_err;
4278         }
4279
4280         while (1) {
4281                 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst,
4282                                       next_hop, &pinfo);
4283                 if (err == -ENOENT)
4284                         break;
4285                 if (err)
4286                         goto out_err;
4287
4288                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4289                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4290                                        wdev->netdev, dst, next_hop,
4291                                        &pinfo) < 0)
4292                         goto out;
4293
4294                 path_idx++;
4295         }
4296
4297
4298  out:
4299         cb->args[2] = path_idx;
4300         err = skb->len;
4301  out_err:
4302         nl80211_finish_wdev_dump(dev);
4303         return err;
4304 }
4305
4306 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4307 {
4308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4309         int err;
4310         struct net_device *dev = info->user_ptr[1];
4311         struct mpath_info pinfo;
4312         struct sk_buff *msg;
4313         u8 *dst = NULL;
4314         u8 next_hop[ETH_ALEN];
4315
4316         memset(&pinfo, 0, sizeof(pinfo));
4317
4318         if (!info->attrs[NL80211_ATTR_MAC])
4319                 return -EINVAL;
4320
4321         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4322
4323         if (!rdev->ops->get_mpath)
4324                 return -EOPNOTSUPP;
4325
4326         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4327                 return -EOPNOTSUPP;
4328
4329         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4330         if (err)
4331                 return err;
4332
4333         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4334         if (!msg)
4335                 return -ENOMEM;
4336
4337         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4338                                  dev, dst, next_hop, &pinfo) < 0) {
4339                 nlmsg_free(msg);
4340                 return -ENOBUFS;
4341         }
4342
4343         return genlmsg_reply(msg, info);
4344 }
4345
4346 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4347 {
4348         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4349         struct net_device *dev = info->user_ptr[1];
4350         u8 *dst = NULL;
4351         u8 *next_hop = NULL;
4352
4353         if (!info->attrs[NL80211_ATTR_MAC])
4354                 return -EINVAL;
4355
4356         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4357                 return -EINVAL;
4358
4359         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4360         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4361
4362         if (!rdev->ops->change_mpath)
4363                 return -EOPNOTSUPP;
4364
4365         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4366                 return -EOPNOTSUPP;
4367
4368         return rdev_change_mpath(rdev, dev, dst, next_hop);
4369 }
4370
4371 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4372 {
4373         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4374         struct net_device *dev = info->user_ptr[1];
4375         u8 *dst = NULL;
4376         u8 *next_hop = NULL;
4377
4378         if (!info->attrs[NL80211_ATTR_MAC])
4379                 return -EINVAL;
4380
4381         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4382                 return -EINVAL;
4383
4384         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4385         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4386
4387         if (!rdev->ops->add_mpath)
4388                 return -EOPNOTSUPP;
4389
4390         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4391                 return -EOPNOTSUPP;
4392
4393         return rdev_add_mpath(rdev, dev, dst, next_hop);
4394 }
4395
4396 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4397 {
4398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4399         struct net_device *dev = info->user_ptr[1];
4400         u8 *dst = NULL;
4401
4402         if (info->attrs[NL80211_ATTR_MAC])
4403                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4404
4405         if (!rdev->ops->del_mpath)
4406                 return -EOPNOTSUPP;
4407
4408         return rdev_del_mpath(rdev, dev, dst);
4409 }
4410
4411 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4412 {
4413         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4414         struct net_device *dev = info->user_ptr[1];
4415         struct bss_parameters params;
4416
4417         memset(&params, 0, sizeof(params));
4418         /* default to not changing parameters */
4419         params.use_cts_prot = -1;
4420         params.use_short_preamble = -1;
4421         params.use_short_slot_time = -1;
4422         params.ap_isolate = -1;
4423         params.ht_opmode = -1;
4424         params.p2p_ctwindow = -1;
4425         params.p2p_opp_ps = -1;
4426
4427         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4428                 params.use_cts_prot =
4429                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4430         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4431                 params.use_short_preamble =
4432                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4433         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4434                 params.use_short_slot_time =
4435                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4436         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4437                 params.basic_rates =
4438                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4439                 params.basic_rates_len =
4440                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4441         }
4442         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4443                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4444         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4445                 params.ht_opmode =
4446                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4447
4448         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4449                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4450                         return -EINVAL;
4451                 params.p2p_ctwindow =
4452                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4453                 if (params.p2p_ctwindow < 0)
4454                         return -EINVAL;
4455                 if (params.p2p_ctwindow != 0 &&
4456                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4457                         return -EINVAL;
4458         }
4459
4460         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4461                 u8 tmp;
4462
4463                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4464                         return -EINVAL;
4465                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4466                 if (tmp > 1)
4467                         return -EINVAL;
4468                 params.p2p_opp_ps = tmp;
4469                 if (params.p2p_opp_ps &&
4470                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4471                         return -EINVAL;
4472         }
4473
4474         if (!rdev->ops->change_bss)
4475                 return -EOPNOTSUPP;
4476
4477         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4478             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4479                 return -EOPNOTSUPP;
4480
4481         return rdev_change_bss(rdev, dev, &params);
4482 }
4483
4484 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4485         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4486         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4487         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4488         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4489         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4490         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4491 };
4492
4493 static int parse_reg_rule(struct nlattr *tb[],
4494         struct ieee80211_reg_rule *reg_rule)
4495 {
4496         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4497         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4498
4499         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4500                 return -EINVAL;
4501         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4502                 return -EINVAL;
4503         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4504                 return -EINVAL;
4505         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4506                 return -EINVAL;
4507         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4508                 return -EINVAL;
4509
4510         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4511
4512         freq_range->start_freq_khz =
4513                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4514         freq_range->end_freq_khz =
4515                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4516         freq_range->max_bandwidth_khz =
4517                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4518
4519         power_rule->max_eirp =
4520                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4521
4522         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4523                 power_rule->max_antenna_gain =
4524                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4525
4526         return 0;
4527 }
4528
4529 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4530 {
4531         int r;
4532         char *data = NULL;
4533         enum nl80211_user_reg_hint_type user_reg_hint_type;
4534
4535         /*
4536          * You should only get this when cfg80211 hasn't yet initialized
4537          * completely when built-in to the kernel right between the time
4538          * window between nl80211_init() and regulatory_init(), if that is
4539          * even possible.
4540          */
4541         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4542                 return -EINPROGRESS;
4543
4544         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4545                 return -EINVAL;
4546
4547         data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4548
4549         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4550                 user_reg_hint_type =
4551                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4552         else
4553                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4554
4555         switch (user_reg_hint_type) {
4556         case NL80211_USER_REG_HINT_USER:
4557         case NL80211_USER_REG_HINT_CELL_BASE:
4558                 break;
4559         default:
4560                 return -EINVAL;
4561         }
4562
4563         r = regulatory_hint_user(data, user_reg_hint_type);
4564
4565         return r;
4566 }
4567
4568 static int nl80211_get_mesh_config(struct sk_buff *skb,
4569                                    struct genl_info *info)
4570 {
4571         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4572         struct net_device *dev = info->user_ptr[1];
4573         struct wireless_dev *wdev = dev->ieee80211_ptr;
4574         struct mesh_config cur_params;
4575         int err = 0;
4576         void *hdr;
4577         struct nlattr *pinfoattr;
4578         struct sk_buff *msg;
4579
4580         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4581                 return -EOPNOTSUPP;
4582
4583         if (!rdev->ops->get_mesh_config)
4584                 return -EOPNOTSUPP;
4585
4586         wdev_lock(wdev);
4587         /* If not connected, get default parameters */
4588         if (!wdev->mesh_id_len)
4589                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4590         else
4591                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4592         wdev_unlock(wdev);
4593
4594         if (err)
4595                 return err;
4596
4597         /* Draw up a netlink message to send back */
4598         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4599         if (!msg)
4600                 return -ENOMEM;
4601         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4602                              NL80211_CMD_GET_MESH_CONFIG);
4603         if (!hdr)
4604                 goto out;
4605         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4606         if (!pinfoattr)
4607                 goto nla_put_failure;
4608         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4609             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4610                         cur_params.dot11MeshRetryTimeout) ||
4611             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4612                         cur_params.dot11MeshConfirmTimeout) ||
4613             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4614                         cur_params.dot11MeshHoldingTimeout) ||
4615             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4616                         cur_params.dot11MeshMaxPeerLinks) ||
4617             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4618                        cur_params.dot11MeshMaxRetries) ||
4619             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4620                        cur_params.dot11MeshTTL) ||
4621             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4622                        cur_params.element_ttl) ||
4623             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4624                        cur_params.auto_open_plinks) ||
4625             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4626                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4627             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4628                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4629             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4630                         cur_params.path_refresh_time) ||
4631             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4632                         cur_params.min_discovery_timeout) ||
4633             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4634                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4635             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4636                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4637             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4638                         cur_params.dot11MeshHWMPperrMinInterval) ||
4639             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4640                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4641             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4642                        cur_params.dot11MeshHWMPRootMode) ||
4643             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4644                         cur_params.dot11MeshHWMPRannInterval) ||
4645             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4646                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4647             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4648                        cur_params.dot11MeshForwarding) ||
4649             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4650                         cur_params.rssi_threshold) ||
4651             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4652                         cur_params.ht_opmode) ||
4653             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4654                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4655             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4656                         cur_params.dot11MeshHWMProotInterval) ||
4657             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4658                         cur_params.dot11MeshHWMPconfirmationInterval) ||
4659             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
4660                         cur_params.power_mode) ||
4661             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
4662                         cur_params.dot11MeshAwakeWindowDuration) ||
4663             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
4664                         cur_params.plink_timeout))
4665                 goto nla_put_failure;
4666         nla_nest_end(msg, pinfoattr);
4667         genlmsg_end(msg, hdr);
4668         return genlmsg_reply(msg, info);
4669
4670  nla_put_failure:
4671         genlmsg_cancel(msg, hdr);
4672  out:
4673         nlmsg_free(msg);
4674         return -ENOBUFS;
4675 }
4676
4677 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
4678         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
4679         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
4680         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
4681         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
4682         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
4683         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
4684         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
4685         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
4686         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
4687         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
4688         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
4689         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
4690         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
4691         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
4692         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
4693         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
4694         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
4695         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
4696         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
4697         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
4698         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
4699         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
4700         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
4701         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
4702         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
4703         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
4704         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
4705         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
4706 };
4707
4708 static const struct nla_policy
4709         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
4710         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
4711         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
4712         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
4713         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
4714         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
4715         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
4716         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
4717                                     .len = IEEE80211_MAX_DATA_LEN },
4718         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
4719 };
4720
4721 static int nl80211_parse_mesh_config(struct genl_info *info,
4722                                      struct mesh_config *cfg,
4723                                      u32 *mask_out)
4724 {
4725         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
4726         u32 mask = 0;
4727
4728 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
4729 do {                                                                        \
4730         if (tb[attr]) {                                                     \
4731                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
4732                         return -EINVAL;                                     \
4733                 cfg->param = fn(tb[attr]);                                  \
4734                 mask |= (1 << (attr - 1));                                  \
4735         }                                                                   \
4736 } while (0)
4737
4738
4739         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
4740                 return -EINVAL;
4741         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
4742                              info->attrs[NL80211_ATTR_MESH_CONFIG],
4743                              nl80211_meshconf_params_policy))
4744                 return -EINVAL;
4745
4746         /* This makes sure that there aren't more than 32 mesh config
4747          * parameters (otherwise our bitfield scheme would not work.) */
4748         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
4749
4750         /* Fill in the params struct */
4751         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
4752                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
4753                                   nla_get_u16);
4754         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
4755                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4756                                   nla_get_u16);
4757         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
4758                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
4759                                   nla_get_u16);
4760         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
4761                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
4762                                   nla_get_u16);
4763         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
4764                                   mask, NL80211_MESHCONF_MAX_RETRIES,
4765                                   nla_get_u8);
4766         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
4767                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
4768         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
4769                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
4770                                   nla_get_u8);
4771         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
4772                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4773                                   nla_get_u8);
4774         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
4775                                   1, 255, mask,
4776                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4777                                   nla_get_u32);
4778         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
4779                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4780                                   nla_get_u8);
4781         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
4782                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
4783                                   nla_get_u32);
4784         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
4785                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4786                                   nla_get_u16);
4787         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
4788                                   1, 65535, mask,
4789                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4790                                   nla_get_u32);
4791         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
4792                                   1, 65535, mask,
4793                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4794                                   nla_get_u16);
4795         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
4796                                   1, 65535, mask,
4797                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4798                                   nla_get_u16);
4799         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4800                                   dot11MeshHWMPnetDiameterTraversalTime,
4801                                   1, 65535, mask,
4802                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4803                                   nla_get_u16);
4804         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
4805                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
4806                                   nla_get_u8);
4807         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
4808                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4809                                   nla_get_u16);
4810         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4811                                   dot11MeshGateAnnouncementProtocol, 0, 1,
4812                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4813                                   nla_get_u8);
4814         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
4815                                   mask, NL80211_MESHCONF_FORWARDING,
4816                                   nla_get_u8);
4817         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
4818                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
4819                                   nla_get_s32);
4820         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
4821                                   mask, NL80211_MESHCONF_HT_OPMODE,
4822                                   nla_get_u16);
4823         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
4824                                   1, 65535, mask,
4825                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4826                                   nla_get_u32);
4827         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
4828                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4829                                   nla_get_u16);
4830         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
4831                                   dot11MeshHWMPconfirmationInterval,
4832                                   1, 65535, mask,
4833                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
4834                                   nla_get_u16);
4835         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
4836                                   NL80211_MESH_POWER_ACTIVE,
4837                                   NL80211_MESH_POWER_MAX,
4838                                   mask, NL80211_MESHCONF_POWER_MODE,
4839                                   nla_get_u32);
4840         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
4841                                   0, 65535, mask,
4842                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
4843         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
4844                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
4845                                   nla_get_u32);
4846         if (mask_out)
4847                 *mask_out = mask;
4848
4849         return 0;
4850
4851 #undef FILL_IN_MESH_PARAM_IF_SET
4852 }
4853
4854 static int nl80211_parse_mesh_setup(struct genl_info *info,
4855                                      struct mesh_setup *setup)
4856 {
4857         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4858         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
4859
4860         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
4861                 return -EINVAL;
4862         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
4863                              info->attrs[NL80211_ATTR_MESH_SETUP],
4864                              nl80211_mesh_setup_params_policy))
4865                 return -EINVAL;
4866
4867         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
4868                 setup->sync_method =
4869                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
4870                  IEEE80211_SYNC_METHOD_VENDOR :
4871                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
4872
4873         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
4874                 setup->path_sel_proto =
4875                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
4876                  IEEE80211_PATH_PROTOCOL_VENDOR :
4877                  IEEE80211_PATH_PROTOCOL_HWMP;
4878
4879         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
4880                 setup->path_metric =
4881                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
4882                  IEEE80211_PATH_METRIC_VENDOR :
4883                  IEEE80211_PATH_METRIC_AIRTIME;
4884
4885
4886         if (tb[NL80211_MESH_SETUP_IE]) {
4887                 struct nlattr *ieattr =
4888                         tb[NL80211_MESH_SETUP_IE];
4889                 if (!is_valid_ie_attr(ieattr))
4890                         return -EINVAL;
4891                 setup->ie = nla_data(ieattr);
4892                 setup->ie_len = nla_len(ieattr);
4893         }
4894         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
4895             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
4896                 return -EINVAL;
4897         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
4898         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
4899         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
4900         if (setup->is_secure)
4901                 setup->user_mpm = true;
4902
4903         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
4904                 if (!setup->user_mpm)
4905                         return -EINVAL;
4906                 setup->auth_id =
4907                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
4908         }
4909
4910         return 0;
4911 }
4912
4913 static int nl80211_update_mesh_config(struct sk_buff *skb,
4914                                       struct genl_info *info)
4915 {
4916         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4917         struct net_device *dev = info->user_ptr[1];
4918         struct wireless_dev *wdev = dev->ieee80211_ptr;
4919         struct mesh_config cfg;
4920         u32 mask;
4921         int err;
4922
4923         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4924                 return -EOPNOTSUPP;
4925
4926         if (!rdev->ops->update_mesh_config)
4927                 return -EOPNOTSUPP;
4928
4929         err = nl80211_parse_mesh_config(info, &cfg, &mask);
4930         if (err)
4931                 return err;
4932
4933         wdev_lock(wdev);
4934         if (!wdev->mesh_id_len)
4935                 err = -ENOLINK;
4936
4937         if (!err)
4938                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
4939
4940         wdev_unlock(wdev);
4941
4942         return err;
4943 }
4944
4945 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
4946 {
4947         const struct ieee80211_regdomain *regdom;
4948         struct sk_buff *msg;
4949         void *hdr = NULL;
4950         struct nlattr *nl_reg_rules;
4951         unsigned int i;
4952
4953         if (!cfg80211_regdomain)
4954                 return -EINVAL;
4955
4956         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4957         if (!msg)
4958                 return -ENOBUFS;
4959
4960         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4961                              NL80211_CMD_GET_REG);
4962         if (!hdr)
4963                 goto put_failure;
4964
4965         if (reg_last_request_cell_base() &&
4966             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
4967                         NL80211_USER_REG_HINT_CELL_BASE))
4968                 goto nla_put_failure;
4969
4970         rcu_read_lock();
4971         regdom = rcu_dereference(cfg80211_regdomain);
4972
4973         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
4974             (regdom->dfs_region &&
4975              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
4976                 goto nla_put_failure_rcu;
4977
4978         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
4979         if (!nl_reg_rules)
4980                 goto nla_put_failure_rcu;
4981
4982         for (i = 0; i < regdom->n_reg_rules; i++) {
4983                 struct nlattr *nl_reg_rule;
4984                 const struct ieee80211_reg_rule *reg_rule;
4985                 const struct ieee80211_freq_range *freq_range;
4986                 const struct ieee80211_power_rule *power_rule;
4987
4988                 reg_rule = &regdom->reg_rules[i];
4989                 freq_range = &reg_rule->freq_range;
4990                 power_rule = &reg_rule->power_rule;
4991
4992                 nl_reg_rule = nla_nest_start(msg, i);
4993                 if (!nl_reg_rule)
4994                         goto nla_put_failure_rcu;
4995
4996                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
4997                                 reg_rule->flags) ||
4998                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
4999                                 freq_range->start_freq_khz) ||
5000                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5001                                 freq_range->end_freq_khz) ||
5002                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5003                                 freq_range->max_bandwidth_khz) ||
5004                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5005                                 power_rule->max_antenna_gain) ||
5006                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5007                                 power_rule->max_eirp))
5008                         goto nla_put_failure_rcu;
5009
5010                 nla_nest_end(msg, nl_reg_rule);
5011         }
5012         rcu_read_unlock();
5013
5014         nla_nest_end(msg, nl_reg_rules);
5015
5016         genlmsg_end(msg, hdr);
5017         return genlmsg_reply(msg, info);
5018
5019 nla_put_failure_rcu:
5020         rcu_read_unlock();
5021 nla_put_failure:
5022         genlmsg_cancel(msg, hdr);
5023 put_failure:
5024         nlmsg_free(msg);
5025         return -EMSGSIZE;
5026 }
5027
5028 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5029 {
5030         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5031         struct nlattr *nl_reg_rule;
5032         char *alpha2 = NULL;
5033         int rem_reg_rules = 0, r = 0;
5034         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5035         u8 dfs_region = 0;
5036         struct ieee80211_regdomain *rd = NULL;
5037
5038         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5039                 return -EINVAL;
5040
5041         if (!info->attrs[NL80211_ATTR_REG_RULES])
5042                 return -EINVAL;
5043
5044         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5045
5046         if (info->attrs[NL80211_ATTR_DFS_REGION])
5047                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5048
5049         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5050                             rem_reg_rules) {
5051                 num_rules++;
5052                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5053                         return -EINVAL;
5054         }
5055
5056         size_of_regd = sizeof(struct ieee80211_regdomain) +
5057                        num_rules * sizeof(struct ieee80211_reg_rule);
5058
5059         rd = kzalloc(size_of_regd, GFP_KERNEL);
5060         if (!rd)
5061                 return -ENOMEM;
5062
5063         rd->n_reg_rules = num_rules;
5064         rd->alpha2[0] = alpha2[0];
5065         rd->alpha2[1] = alpha2[1];
5066
5067         /*
5068          * Disable DFS master mode if the DFS region was
5069          * not supported or known on this kernel.
5070          */
5071         if (reg_supported_dfs_region(dfs_region))
5072                 rd->dfs_region = dfs_region;
5073
5074         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5075                             rem_reg_rules) {
5076                 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5077                           nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5078                           reg_rule_policy);
5079                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5080                 if (r)
5081                         goto bad_reg;
5082
5083                 rule_idx++;
5084
5085                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5086                         r = -EINVAL;
5087                         goto bad_reg;
5088                 }
5089         }
5090
5091         r = set_regdom(rd);
5092         /* set_regdom took ownership */
5093         rd = NULL;
5094
5095  bad_reg:
5096         kfree(rd);
5097         return r;
5098 }
5099
5100 static int validate_scan_freqs(struct nlattr *freqs)
5101 {
5102         struct nlattr *attr1, *attr2;
5103         int n_channels = 0, tmp1, tmp2;
5104
5105         nla_for_each_nested(attr1, freqs, tmp1) {
5106                 n_channels++;
5107                 /*
5108                  * Some hardware has a limited channel list for
5109                  * scanning, and it is pretty much nonsensical
5110                  * to scan for a channel twice, so disallow that
5111                  * and don't require drivers to check that the
5112                  * channel list they get isn't longer than what
5113                  * they can scan, as long as they can scan all
5114                  * the channels they registered at once.
5115                  */
5116                 nla_for_each_nested(attr2, freqs, tmp2)
5117                         if (attr1 != attr2 &&
5118                             nla_get_u32(attr1) == nla_get_u32(attr2))
5119                                 return 0;
5120         }
5121
5122         return n_channels;
5123 }
5124
5125 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5126 {
5127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5128         struct wireless_dev *wdev = info->user_ptr[1];
5129         struct cfg80211_scan_request *request;
5130         struct nlattr *attr;
5131         struct wiphy *wiphy;
5132         int err, tmp, n_ssids = 0, n_channels, i;
5133         size_t ie_len;
5134
5135         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5136                 return -EINVAL;
5137
5138         wiphy = &rdev->wiphy;
5139
5140         if (!rdev->ops->scan)
5141                 return -EOPNOTSUPP;
5142
5143         if (rdev->scan_req) {
5144                 err = -EBUSY;
5145                 goto unlock;
5146         }
5147
5148         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5149                 n_channels = validate_scan_freqs(
5150                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5151                 if (!n_channels) {
5152                         err = -EINVAL;
5153                         goto unlock;
5154                 }
5155         } else {
5156                 enum ieee80211_band band;
5157                 n_channels = 0;
5158
5159                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5160                         if (wiphy->bands[band])
5161                                 n_channels += wiphy->bands[band]->n_channels;
5162         }
5163
5164         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5165                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5166                         n_ssids++;
5167
5168         if (n_ssids > wiphy->max_scan_ssids) {
5169                 err = -EINVAL;
5170                 goto unlock;
5171         }
5172
5173         if (info->attrs[NL80211_ATTR_IE])
5174                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5175         else
5176                 ie_len = 0;
5177
5178         if (ie_len > wiphy->max_scan_ie_len) {
5179                 err = -EINVAL;
5180                 goto unlock;
5181         }
5182
5183         request = kzalloc(sizeof(*request)
5184                         + sizeof(*request->ssids) * n_ssids
5185                         + sizeof(*request->channels) * n_channels
5186                         + ie_len, GFP_KERNEL);
5187         if (!request) {
5188                 err = -ENOMEM;
5189                 goto unlock;
5190         }
5191
5192         if (n_ssids)
5193                 request->ssids = (void *)&request->channels[n_channels];
5194         request->n_ssids = n_ssids;
5195         if (ie_len) {
5196                 if (request->ssids)
5197                         request->ie = (void *)(request->ssids + n_ssids);
5198                 else
5199                         request->ie = (void *)(request->channels + n_channels);
5200         }
5201
5202         i = 0;
5203         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5204                 /* user specified, bail out if channel not found */
5205                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5206                         struct ieee80211_channel *chan;
5207
5208                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5209
5210                         if (!chan) {
5211                                 err = -EINVAL;
5212                                 goto out_free;
5213                         }
5214
5215                         /* ignore disabled channels */
5216                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5217                                 continue;
5218
5219                         request->channels[i] = chan;
5220                         i++;
5221                 }
5222         } else {
5223                 enum ieee80211_band band;
5224
5225                 /* all channels */
5226                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5227                         int j;
5228                         if (!wiphy->bands[band])
5229                                 continue;
5230                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5231                                 struct ieee80211_channel *chan;
5232
5233                                 chan = &wiphy->bands[band]->channels[j];
5234
5235                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5236                                         continue;
5237
5238                                 request->channels[i] = chan;
5239                                 i++;
5240                         }
5241                 }
5242         }
5243
5244         if (!i) {
5245                 err = -EINVAL;
5246                 goto out_free;
5247         }
5248
5249         request->n_channels = i;
5250
5251         i = 0;
5252         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5253                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5254                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5255                                 err = -EINVAL;
5256                                 goto out_free;
5257                         }
5258                         request->ssids[i].ssid_len = nla_len(attr);
5259                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5260                         i++;
5261                 }
5262         }
5263
5264         if (info->attrs[NL80211_ATTR_IE]) {
5265                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5266                 memcpy((void *)request->ie,
5267                        nla_data(info->attrs[NL80211_ATTR_IE]),
5268                        request->ie_len);
5269         }
5270
5271         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5272                 if (wiphy->bands[i])
5273                         request->rates[i] =
5274                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5275
5276         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5277                 nla_for_each_nested(attr,
5278                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5279                                     tmp) {
5280                         enum ieee80211_band band = nla_type(attr);
5281
5282                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5283                                 err = -EINVAL;
5284                                 goto out_free;
5285                         }
5286                         err = ieee80211_get_ratemask(wiphy->bands[band],
5287                                                      nla_data(attr),
5288                                                      nla_len(attr),
5289                                                      &request->rates[band]);
5290                         if (err)
5291                                 goto out_free;
5292                 }
5293         }
5294
5295         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5296                 request->flags = nla_get_u32(
5297                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5298                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5299                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5300                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5301                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5302                         err = -EOPNOTSUPP;
5303                         goto out_free;
5304                 }
5305         }
5306
5307         request->no_cck =
5308                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5309
5310         request->wdev = wdev;
5311         request->wiphy = &rdev->wiphy;
5312         request->scan_start = jiffies;
5313
5314         rdev->scan_req = request;
5315         err = rdev_scan(rdev, request);
5316
5317         if (!err) {
5318                 nl80211_send_scan_start(rdev, wdev);
5319                 if (wdev->netdev)
5320                         dev_hold(wdev->netdev);
5321         } else {
5322  out_free:
5323                 rdev->scan_req = NULL;
5324                 kfree(request);
5325         }
5326
5327  unlock:
5328         return err;
5329 }
5330
5331 static int nl80211_start_sched_scan(struct sk_buff *skb,
5332                                     struct genl_info *info)
5333 {
5334         struct cfg80211_sched_scan_request *request;
5335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5336         struct net_device *dev = info->user_ptr[1];
5337         struct nlattr *attr;
5338         struct wiphy *wiphy;
5339         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5340         u32 interval;
5341         enum ieee80211_band band;
5342         size_t ie_len;
5343         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5344
5345         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5346             !rdev->ops->sched_scan_start)
5347                 return -EOPNOTSUPP;
5348
5349         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5350                 return -EINVAL;
5351
5352         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5353                 return -EINVAL;
5354
5355         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5356         if (interval == 0)
5357                 return -EINVAL;
5358
5359         wiphy = &rdev->wiphy;
5360
5361         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5362                 n_channels = validate_scan_freqs(
5363                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5364                 if (!n_channels)
5365                         return -EINVAL;
5366         } else {
5367                 n_channels = 0;
5368
5369                 for (band = 0; band < IEEE80211_NUM_BANDS; band++)
5370                         if (wiphy->bands[band])
5371                                 n_channels += wiphy->bands[band]->n_channels;
5372         }
5373
5374         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5375                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5376                                     tmp)
5377                         n_ssids++;
5378
5379         if (n_ssids > wiphy->max_sched_scan_ssids)
5380                 return -EINVAL;
5381
5382         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH])
5383                 nla_for_each_nested(attr,
5384                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5385                                     tmp)
5386                         n_match_sets++;
5387
5388         if (n_match_sets > wiphy->max_match_sets)
5389                 return -EINVAL;
5390
5391         if (info->attrs[NL80211_ATTR_IE])
5392                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5393         else
5394                 ie_len = 0;
5395
5396         if (ie_len > wiphy->max_sched_scan_ie_len)
5397                 return -EINVAL;
5398
5399         if (rdev->sched_scan_req) {
5400                 err = -EINPROGRESS;
5401                 goto out;
5402         }
5403
5404         request = kzalloc(sizeof(*request)
5405                         + sizeof(*request->ssids) * n_ssids
5406                         + sizeof(*request->match_sets) * n_match_sets
5407                         + sizeof(*request->channels) * n_channels
5408                         + ie_len, GFP_KERNEL);
5409         if (!request) {
5410                 err = -ENOMEM;
5411                 goto out;
5412         }
5413
5414         if (n_ssids)
5415                 request->ssids = (void *)&request->channels[n_channels];
5416         request->n_ssids = n_ssids;
5417         if (ie_len) {
5418                 if (request->ssids)
5419                         request->ie = (void *)(request->ssids + n_ssids);
5420                 else
5421                         request->ie = (void *)(request->channels + n_channels);
5422         }
5423
5424         if (n_match_sets) {
5425                 if (request->ie)
5426                         request->match_sets = (void *)(request->ie + ie_len);
5427                 else if (request->ssids)
5428                         request->match_sets =
5429                                 (void *)(request->ssids + n_ssids);
5430                 else
5431                         request->match_sets =
5432                                 (void *)(request->channels + n_channels);
5433         }
5434         request->n_match_sets = n_match_sets;
5435
5436         i = 0;
5437         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5438                 /* user specified, bail out if channel not found */
5439                 nla_for_each_nested(attr,
5440                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5441                                     tmp) {
5442                         struct ieee80211_channel *chan;
5443
5444                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5445
5446                         if (!chan) {
5447                                 err = -EINVAL;
5448                                 goto out_free;
5449                         }
5450
5451                         /* ignore disabled channels */
5452                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5453                                 continue;
5454
5455                         request->channels[i] = chan;
5456                         i++;
5457                 }
5458         } else {
5459                 /* all channels */
5460                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5461                         int j;
5462                         if (!wiphy->bands[band])
5463                                 continue;
5464                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5465                                 struct ieee80211_channel *chan;
5466
5467                                 chan = &wiphy->bands[band]->channels[j];
5468
5469                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5470                                         continue;
5471
5472                                 request->channels[i] = chan;
5473                                 i++;
5474                         }
5475                 }
5476         }
5477
5478         if (!i) {
5479                 err = -EINVAL;
5480                 goto out_free;
5481         }
5482
5483         request->n_channels = i;
5484
5485         i = 0;
5486         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5487                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5488                                     tmp) {
5489                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5490                                 err = -EINVAL;
5491                                 goto out_free;
5492                         }
5493                         request->ssids[i].ssid_len = nla_len(attr);
5494                         memcpy(request->ssids[i].ssid, nla_data(attr),
5495                                nla_len(attr));
5496                         i++;
5497                 }
5498         }
5499
5500         i = 0;
5501         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5502                 nla_for_each_nested(attr,
5503                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5504                                     tmp) {
5505                         struct nlattr *ssid, *rssi;
5506
5507                         nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5508                                   nla_data(attr), nla_len(attr),
5509                                   nl80211_match_policy);
5510                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5511                         if (ssid) {
5512                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5513                                         err = -EINVAL;
5514                                         goto out_free;
5515                                 }
5516                                 memcpy(request->match_sets[i].ssid.ssid,
5517                                        nla_data(ssid), nla_len(ssid));
5518                                 request->match_sets[i].ssid.ssid_len =
5519                                         nla_len(ssid);
5520                         }
5521                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5522                         if (rssi)
5523                                 request->rssi_thold = nla_get_u32(rssi);
5524                         else
5525                                 request->rssi_thold =
5526                                                    NL80211_SCAN_RSSI_THOLD_OFF;
5527                         i++;
5528                 }
5529         }
5530
5531         if (info->attrs[NL80211_ATTR_IE]) {
5532                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5533                 memcpy((void *)request->ie,
5534                        nla_data(info->attrs[NL80211_ATTR_IE]),
5535                        request->ie_len);
5536         }
5537
5538         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5539                 request->flags = nla_get_u32(
5540                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5541                 if (((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5542                      !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
5543                     ((request->flags & NL80211_SCAN_FLAG_FLUSH) &&
5544                      !(wiphy->features & NL80211_FEATURE_SCAN_FLUSH))) {
5545                         err = -EOPNOTSUPP;
5546                         goto out_free;
5547                 }
5548         }
5549
5550         request->dev = dev;
5551         request->wiphy = &rdev->wiphy;
5552         request->interval = interval;
5553         request->scan_start = jiffies;
5554
5555         err = rdev_sched_scan_start(rdev, dev, request);
5556         if (!err) {
5557                 rdev->sched_scan_req = request;
5558                 nl80211_send_sched_scan(rdev, dev,
5559                                         NL80211_CMD_START_SCHED_SCAN);
5560                 goto out;
5561         }
5562
5563 out_free:
5564         kfree(request);
5565 out:
5566         return err;
5567 }
5568
5569 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5570                                    struct genl_info *info)
5571 {
5572         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5573
5574         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5575             !rdev->ops->sched_scan_stop)
5576                 return -EOPNOTSUPP;
5577
5578         return __cfg80211_stop_sched_scan(rdev, false);
5579 }
5580
5581 static int nl80211_start_radar_detection(struct sk_buff *skb,
5582                                          struct genl_info *info)
5583 {
5584         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5585         struct net_device *dev = info->user_ptr[1];
5586         struct wireless_dev *wdev = dev->ieee80211_ptr;
5587         struct cfg80211_chan_def chandef;
5588         int err;
5589
5590         err = nl80211_parse_chandef(rdev, info, &chandef);
5591         if (err)
5592                 return err;
5593
5594         if (wdev->cac_started)
5595                 return -EBUSY;
5596
5597         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef);
5598         if (err < 0)
5599                 return err;
5600
5601         if (err == 0)
5602                 return -EINVAL;
5603
5604         if (chandef.chan->dfs_state != NL80211_DFS_USABLE)
5605                 return -EINVAL;
5606
5607         if (!rdev->ops->start_radar_detection)
5608                 return -EOPNOTSUPP;
5609
5610         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5611                                            chandef.chan, CHAN_MODE_SHARED,
5612                                            BIT(chandef.width));
5613         if (err)
5614                 return err;
5615
5616         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef);
5617         if (!err) {
5618                 wdev->channel = chandef.chan;
5619                 wdev->cac_started = true;
5620                 wdev->cac_start_time = jiffies;
5621         }
5622         return err;
5623 }
5624
5625 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
5626 {
5627         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5628         struct net_device *dev = info->user_ptr[1];
5629         struct wireless_dev *wdev = dev->ieee80211_ptr;
5630         struct cfg80211_csa_settings params;
5631         /* csa_attrs is defined static to avoid waste of stack size - this
5632          * function is called under RTNL lock, so this should not be a problem.
5633          */
5634         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
5635         u8 radar_detect_width = 0;
5636         int err;
5637
5638         if (!rdev->ops->channel_switch ||
5639             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
5640                 return -EOPNOTSUPP;
5641
5642         /* may add IBSS support later */
5643         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5644             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5645                 return -EOPNOTSUPP;
5646
5647         memset(&params, 0, sizeof(params));
5648
5649         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
5650             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
5651                 return -EINVAL;
5652
5653         /* only important for AP, IBSS and mesh create IEs internally */
5654         if (!info->attrs[NL80211_ATTR_CSA_IES])
5655                 return -EINVAL;
5656
5657         /* useless if AP is not running */
5658         if (!wdev->beacon_interval)
5659                 return -EINVAL;
5660
5661         params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
5662
5663         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
5664         if (err)
5665                 return err;
5666
5667         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
5668                                info->attrs[NL80211_ATTR_CSA_IES],
5669                                nl80211_policy);
5670         if (err)
5671                 return err;
5672
5673         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
5674         if (err)
5675                 return err;
5676
5677         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
5678                 return -EINVAL;
5679
5680         params.counter_offset_beacon =
5681                 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
5682         if (params.counter_offset_beacon >= params.beacon_csa.tail_len)
5683                 return -EINVAL;
5684
5685         /* sanity check - counters should be the same */
5686         if (params.beacon_csa.tail[params.counter_offset_beacon] !=
5687             params.count)
5688                 return -EINVAL;
5689
5690         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
5691                 params.counter_offset_presp =
5692                         nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
5693                 if (params.counter_offset_presp >=
5694                     params.beacon_csa.probe_resp_len)
5695                         return -EINVAL;
5696
5697                 if (params.beacon_csa.probe_resp[params.counter_offset_presp] !=
5698                     params.count)
5699                         return -EINVAL;
5700         }
5701
5702         err = nl80211_parse_chandef(rdev, info, &params.chandef);
5703         if (err)
5704                 return err;
5705
5706         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
5707                 return -EINVAL;
5708
5709         err = cfg80211_chandef_dfs_required(wdev->wiphy, &params.chandef);
5710         if (err < 0) {
5711                 return err;
5712         } else if (err) {
5713                 radar_detect_width = BIT(params.chandef.width);
5714                 params.radar_required = true;
5715         }
5716
5717         err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
5718                                            params.chandef.chan,
5719                                            CHAN_MODE_SHARED,
5720                                            radar_detect_width);
5721         if (err)
5722                 return err;
5723
5724         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
5725                 params.block_tx = true;
5726
5727         return rdev_channel_switch(rdev, dev, &params);
5728 }
5729
5730 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
5731                             u32 seq, int flags,
5732                             struct cfg80211_registered_device *rdev,
5733                             struct wireless_dev *wdev,
5734                             struct cfg80211_internal_bss *intbss)
5735 {
5736         struct cfg80211_bss *res = &intbss->pub;
5737         const struct cfg80211_bss_ies *ies;
5738         void *hdr;
5739         struct nlattr *bss;
5740         bool tsf = false;
5741
5742         ASSERT_WDEV_LOCK(wdev);
5743
5744         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5745                              NL80211_CMD_NEW_SCAN_RESULTS);
5746         if (!hdr)
5747                 return -1;
5748
5749         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5750
5751         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
5752                 goto nla_put_failure;
5753         if (wdev->netdev &&
5754             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
5755                 goto nla_put_failure;
5756         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
5757                 goto nla_put_failure;
5758
5759         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
5760         if (!bss)
5761                 goto nla_put_failure;
5762         if ((!is_zero_ether_addr(res->bssid) &&
5763              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
5764                 goto nla_put_failure;
5765
5766         rcu_read_lock();
5767         ies = rcu_dereference(res->ies);
5768         if (ies) {
5769                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5770                         goto fail_unlock_rcu;
5771                 tsf = true;
5772                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
5773                                         ies->len, ies->data))
5774                         goto fail_unlock_rcu;
5775         }
5776         ies = rcu_dereference(res->beacon_ies);
5777         if (ies) {
5778                 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
5779                         goto fail_unlock_rcu;
5780                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
5781                                         ies->len, ies->data))
5782                         goto fail_unlock_rcu;
5783         }
5784         rcu_read_unlock();
5785
5786         if (res->beacon_interval &&
5787             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
5788                 goto nla_put_failure;
5789         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
5790             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
5791             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
5792             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
5793                         jiffies_to_msecs(jiffies - intbss->ts)))
5794                 goto nla_put_failure;
5795
5796         switch (rdev->wiphy.signal_type) {
5797         case CFG80211_SIGNAL_TYPE_MBM:
5798                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
5799                         goto nla_put_failure;
5800                 break;
5801         case CFG80211_SIGNAL_TYPE_UNSPEC:
5802                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
5803                         goto nla_put_failure;
5804                 break;
5805         default:
5806                 break;
5807         }
5808
5809         switch (wdev->iftype) {
5810         case NL80211_IFTYPE_P2P_CLIENT:
5811         case NL80211_IFTYPE_STATION:
5812                 if (intbss == wdev->current_bss &&
5813                     nla_put_u32(msg, NL80211_BSS_STATUS,
5814                                 NL80211_BSS_STATUS_ASSOCIATED))
5815                         goto nla_put_failure;
5816                 break;
5817         case NL80211_IFTYPE_ADHOC:
5818                 if (intbss == wdev->current_bss &&
5819                     nla_put_u32(msg, NL80211_BSS_STATUS,
5820                                 NL80211_BSS_STATUS_IBSS_JOINED))
5821                         goto nla_put_failure;
5822                 break;
5823         default:
5824                 break;
5825         }
5826
5827         nla_nest_end(msg, bss);
5828
5829         return genlmsg_end(msg, hdr);
5830
5831  fail_unlock_rcu:
5832         rcu_read_unlock();
5833  nla_put_failure:
5834         genlmsg_cancel(msg, hdr);
5835         return -EMSGSIZE;
5836 }
5837
5838 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
5839 {
5840         struct cfg80211_registered_device *rdev;
5841         struct cfg80211_internal_bss *scan;
5842         struct wireless_dev *wdev;
5843         int start = cb->args[2], idx = 0;
5844         int err;
5845
5846         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
5847         if (err)
5848                 return err;
5849
5850         wdev_lock(wdev);
5851         spin_lock_bh(&rdev->bss_lock);
5852         cfg80211_bss_expire(rdev);
5853
5854         cb->seq = rdev->bss_generation;
5855
5856         list_for_each_entry(scan, &rdev->bss_list, list) {
5857                 if (++idx <= start)
5858                         continue;
5859                 if (nl80211_send_bss(skb, cb,
5860                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5861                                 rdev, wdev, scan) < 0) {
5862                         idx--;
5863                         break;
5864                 }
5865         }
5866
5867         spin_unlock_bh(&rdev->bss_lock);
5868         wdev_unlock(wdev);
5869
5870         cb->args[2] = idx;
5871         nl80211_finish_wdev_dump(rdev);
5872
5873         return skb->len;
5874 }
5875
5876 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
5877                                 int flags, struct net_device *dev,
5878                                 struct survey_info *survey)
5879 {
5880         void *hdr;
5881         struct nlattr *infoattr;
5882
5883         hdr = nl80211hdr_put(msg, portid, seq, flags,
5884                              NL80211_CMD_NEW_SURVEY_RESULTS);
5885         if (!hdr)
5886                 return -ENOMEM;
5887
5888         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
5889                 goto nla_put_failure;
5890
5891         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
5892         if (!infoattr)
5893                 goto nla_put_failure;
5894
5895         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
5896                         survey->channel->center_freq))
5897                 goto nla_put_failure;
5898
5899         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
5900             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
5901                 goto nla_put_failure;
5902         if ((survey->filled & SURVEY_INFO_IN_USE) &&
5903             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
5904                 goto nla_put_failure;
5905         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
5906             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
5907                         survey->channel_time))
5908                 goto nla_put_failure;
5909         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
5910             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
5911                         survey->channel_time_busy))
5912                 goto nla_put_failure;
5913         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
5914             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
5915                         survey->channel_time_ext_busy))
5916                 goto nla_put_failure;
5917         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
5918             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
5919                         survey->channel_time_rx))
5920                 goto nla_put_failure;
5921         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
5922             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
5923                         survey->channel_time_tx))
5924                 goto nla_put_failure;
5925
5926         nla_nest_end(msg, infoattr);
5927
5928         return genlmsg_end(msg, hdr);
5929
5930  nla_put_failure:
5931         genlmsg_cancel(msg, hdr);
5932         return -EMSGSIZE;
5933 }
5934
5935 static int nl80211_dump_survey(struct sk_buff *skb,
5936                         struct netlink_callback *cb)
5937 {
5938         struct survey_info survey;
5939         struct cfg80211_registered_device *dev;
5940         struct wireless_dev *wdev;
5941         int survey_idx = cb->args[2];
5942         int res;
5943
5944         res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev);
5945         if (res)
5946                 return res;
5947
5948         if (!wdev->netdev) {
5949                 res = -EINVAL;
5950                 goto out_err;
5951         }
5952
5953         if (!dev->ops->dump_survey) {
5954                 res = -EOPNOTSUPP;
5955                 goto out_err;
5956         }
5957
5958         while (1) {
5959                 struct ieee80211_channel *chan;
5960
5961                 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey);
5962                 if (res == -ENOENT)
5963                         break;
5964                 if (res)
5965                         goto out_err;
5966
5967                 /* Survey without a channel doesn't make sense */
5968                 if (!survey.channel) {
5969                         res = -EINVAL;
5970                         goto out;
5971                 }
5972
5973                 chan = ieee80211_get_channel(&dev->wiphy,
5974                                              survey.channel->center_freq);
5975                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
5976                         survey_idx++;
5977                         continue;
5978                 }
5979
5980                 if (nl80211_send_survey(skb,
5981                                 NETLINK_CB(cb->skb).portid,
5982                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5983                                 wdev->netdev, &survey) < 0)
5984                         goto out;
5985                 survey_idx++;
5986         }
5987
5988  out:
5989         cb->args[2] = survey_idx;
5990         res = skb->len;
5991  out_err:
5992         nl80211_finish_wdev_dump(dev);
5993         return res;
5994 }
5995
5996 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
5997 {
5998         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
5999                                   NL80211_WPA_VERSION_2));
6000 }
6001
6002 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6003 {
6004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6005         struct net_device *dev = info->user_ptr[1];
6006         struct ieee80211_channel *chan;
6007         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6008         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6009         enum nl80211_auth_type auth_type;
6010         struct key_parse key;
6011         bool local_state_change;
6012
6013         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6014                 return -EINVAL;
6015
6016         if (!info->attrs[NL80211_ATTR_MAC])
6017                 return -EINVAL;
6018
6019         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6020                 return -EINVAL;
6021
6022         if (!info->attrs[NL80211_ATTR_SSID])
6023                 return -EINVAL;
6024
6025         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6026                 return -EINVAL;
6027
6028         err = nl80211_parse_key(info, &key);
6029         if (err)
6030                 return err;
6031
6032         if (key.idx >= 0) {
6033                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6034                         return -EINVAL;
6035                 if (!key.p.key || !key.p.key_len)
6036                         return -EINVAL;
6037                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6038                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6039                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6040                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6041                         return -EINVAL;
6042                 if (key.idx > 4)
6043                         return -EINVAL;
6044         } else {
6045                 key.p.key_len = 0;
6046                 key.p.key = NULL;
6047         }
6048
6049         if (key.idx >= 0) {
6050                 int i;
6051                 bool ok = false;
6052                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6053                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6054                                 ok = true;
6055                                 break;
6056                         }
6057                 }
6058                 if (!ok)
6059                         return -EINVAL;
6060         }
6061
6062         if (!rdev->ops->auth)
6063                 return -EOPNOTSUPP;
6064
6065         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6066             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6067                 return -EOPNOTSUPP;
6068
6069         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6070         chan = ieee80211_get_channel(&rdev->wiphy,
6071                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6072         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6073                 return -EINVAL;
6074
6075         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6076         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6077
6078         if (info->attrs[NL80211_ATTR_IE]) {
6079                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6080                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6081         }
6082
6083         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6084         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6085                 return -EINVAL;
6086
6087         if (auth_type == NL80211_AUTHTYPE_SAE &&
6088             !info->attrs[NL80211_ATTR_SAE_DATA])
6089                 return -EINVAL;
6090
6091         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6092                 if (auth_type != NL80211_AUTHTYPE_SAE)
6093                         return -EINVAL;
6094                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6095                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6096                 /* need to include at least Auth Transaction and Status Code */
6097                 if (sae_data_len < 4)
6098                         return -EINVAL;
6099         }
6100
6101         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6102
6103         /*
6104          * Since we no longer track auth state, ignore
6105          * requests to only change local state.
6106          */
6107         if (local_state_change)
6108                 return 0;
6109
6110         wdev_lock(dev->ieee80211_ptr);
6111         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6112                                  ssid, ssid_len, ie, ie_len,
6113                                  key.p.key, key.p.key_len, key.idx,
6114                                  sae_data, sae_data_len);
6115         wdev_unlock(dev->ieee80211_ptr);
6116         return err;
6117 }
6118
6119 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6120                                    struct genl_info *info,
6121                                    struct cfg80211_crypto_settings *settings,
6122                                    int cipher_limit)
6123 {
6124         memset(settings, 0, sizeof(*settings));
6125
6126         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6127
6128         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6129                 u16 proto;
6130                 proto = nla_get_u16(
6131                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6132                 settings->control_port_ethertype = cpu_to_be16(proto);
6133                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6134                     proto != ETH_P_PAE)
6135                         return -EINVAL;
6136                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6137                         settings->control_port_no_encrypt = true;
6138         } else
6139                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6140
6141         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6142                 void *data;
6143                 int len, i;
6144
6145                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6146                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6147                 settings->n_ciphers_pairwise = len / sizeof(u32);
6148
6149                 if (len % sizeof(u32))
6150                         return -EINVAL;
6151
6152                 if (settings->n_ciphers_pairwise > cipher_limit)
6153                         return -EINVAL;
6154
6155                 memcpy(settings->ciphers_pairwise, data, len);
6156
6157                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6158                         if (!cfg80211_supported_cipher_suite(
6159                                         &rdev->wiphy,
6160                                         settings->ciphers_pairwise[i]))
6161                                 return -EINVAL;
6162         }
6163
6164         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6165                 settings->cipher_group =
6166                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6167                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6168                                                      settings->cipher_group))
6169                         return -EINVAL;
6170         }
6171
6172         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6173                 settings->wpa_versions =
6174                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6175                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6176                         return -EINVAL;
6177         }
6178
6179         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6180                 void *data;
6181                 int len;
6182
6183                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6184                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6185                 settings->n_akm_suites = len / sizeof(u32);
6186
6187                 if (len % sizeof(u32))
6188                         return -EINVAL;
6189
6190                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6191                         return -EINVAL;
6192
6193                 memcpy(settings->akm_suites, data, len);
6194         }
6195
6196         return 0;
6197 }
6198
6199 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6200 {
6201         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6202         struct net_device *dev = info->user_ptr[1];
6203         struct ieee80211_channel *chan;
6204         struct cfg80211_assoc_request req = {};
6205         const u8 *bssid, *ssid;
6206         int err, ssid_len = 0;
6207
6208         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6209                 return -EINVAL;
6210
6211         if (!info->attrs[NL80211_ATTR_MAC] ||
6212             !info->attrs[NL80211_ATTR_SSID] ||
6213             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6214                 return -EINVAL;
6215
6216         if (!rdev->ops->assoc)
6217                 return -EOPNOTSUPP;
6218
6219         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6220             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6221                 return -EOPNOTSUPP;
6222
6223         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6224
6225         chan = ieee80211_get_channel(&rdev->wiphy,
6226                 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6227         if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED))
6228                 return -EINVAL;
6229
6230         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6231         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6232
6233         if (info->attrs[NL80211_ATTR_IE]) {
6234                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6235                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6236         }
6237
6238         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6239                 enum nl80211_mfp mfp =
6240                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6241                 if (mfp == NL80211_MFP_REQUIRED)
6242                         req.use_mfp = true;
6243                 else if (mfp != NL80211_MFP_NO)
6244                         return -EINVAL;
6245         }
6246
6247         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6248                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6249
6250         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6251                 req.flags |= ASSOC_REQ_DISABLE_HT;
6252
6253         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6254                 memcpy(&req.ht_capa_mask,
6255                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6256                        sizeof(req.ht_capa_mask));
6257
6258         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6259                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6260                         return -EINVAL;
6261                 memcpy(&req.ht_capa,
6262                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6263                        sizeof(req.ht_capa));
6264         }
6265
6266         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6267                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6268
6269         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6270                 memcpy(&req.vht_capa_mask,
6271                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6272                        sizeof(req.vht_capa_mask));
6273
6274         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6275                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6276                         return -EINVAL;
6277                 memcpy(&req.vht_capa,
6278                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6279                        sizeof(req.vht_capa));
6280         }
6281
6282         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6283         if (!err) {
6284                 wdev_lock(dev->ieee80211_ptr);
6285                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6286                                           ssid, ssid_len, &req);
6287                 wdev_unlock(dev->ieee80211_ptr);
6288         }
6289
6290         return err;
6291 }
6292
6293 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6294 {
6295         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6296         struct net_device *dev = info->user_ptr[1];
6297         const u8 *ie = NULL, *bssid;
6298         int ie_len = 0, err;
6299         u16 reason_code;
6300         bool local_state_change;
6301
6302         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6303                 return -EINVAL;
6304
6305         if (!info->attrs[NL80211_ATTR_MAC])
6306                 return -EINVAL;
6307
6308         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6309                 return -EINVAL;
6310
6311         if (!rdev->ops->deauth)
6312                 return -EOPNOTSUPP;
6313
6314         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6315             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6316                 return -EOPNOTSUPP;
6317
6318         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6319
6320         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6321         if (reason_code == 0) {
6322                 /* Reason Code 0 is reserved */
6323                 return -EINVAL;
6324         }
6325
6326         if (info->attrs[NL80211_ATTR_IE]) {
6327                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6328                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6329         }
6330
6331         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6332
6333         wdev_lock(dev->ieee80211_ptr);
6334         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6335                                    local_state_change);
6336         wdev_unlock(dev->ieee80211_ptr);
6337         return err;
6338 }
6339
6340 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6341 {
6342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6343         struct net_device *dev = info->user_ptr[1];
6344         const u8 *ie = NULL, *bssid;
6345         int ie_len = 0, err;
6346         u16 reason_code;
6347         bool local_state_change;
6348
6349         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6350                 return -EINVAL;
6351
6352         if (!info->attrs[NL80211_ATTR_MAC])
6353                 return -EINVAL;
6354
6355         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6356                 return -EINVAL;
6357
6358         if (!rdev->ops->disassoc)
6359                 return -EOPNOTSUPP;
6360
6361         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6362             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6363                 return -EOPNOTSUPP;
6364
6365         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6366
6367         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6368         if (reason_code == 0) {
6369                 /* Reason Code 0 is reserved */
6370                 return -EINVAL;
6371         }
6372
6373         if (info->attrs[NL80211_ATTR_IE]) {
6374                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6375                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6376         }
6377
6378         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6379
6380         wdev_lock(dev->ieee80211_ptr);
6381         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6382                                      local_state_change);
6383         wdev_unlock(dev->ieee80211_ptr);
6384         return err;
6385 }
6386
6387 static bool
6388 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6389                          int mcast_rate[IEEE80211_NUM_BANDS],
6390                          int rateval)
6391 {
6392         struct wiphy *wiphy = &rdev->wiphy;
6393         bool found = false;
6394         int band, i;
6395
6396         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6397                 struct ieee80211_supported_band *sband;
6398
6399                 sband = wiphy->bands[band];
6400                 if (!sband)
6401                         continue;
6402
6403                 for (i = 0; i < sband->n_bitrates; i++) {
6404                         if (sband->bitrates[i].bitrate == rateval) {
6405                                 mcast_rate[band] = i + 1;
6406                                 found = true;
6407                                 break;
6408                         }
6409                 }
6410         }
6411
6412         return found;
6413 }
6414
6415 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6416 {
6417         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6418         struct net_device *dev = info->user_ptr[1];
6419         struct cfg80211_ibss_params ibss;
6420         struct wiphy *wiphy;
6421         struct cfg80211_cached_keys *connkeys = NULL;
6422         int err;
6423
6424         memset(&ibss, 0, sizeof(ibss));
6425
6426         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6427                 return -EINVAL;
6428
6429         if (!info->attrs[NL80211_ATTR_SSID] ||
6430             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6431                 return -EINVAL;
6432
6433         ibss.beacon_interval = 100;
6434
6435         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6436                 ibss.beacon_interval =
6437                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6438                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6439                         return -EINVAL;
6440         }
6441
6442         if (!rdev->ops->join_ibss)
6443                 return -EOPNOTSUPP;
6444
6445         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6446                 return -EOPNOTSUPP;
6447
6448         wiphy = &rdev->wiphy;
6449
6450         if (info->attrs[NL80211_ATTR_MAC]) {
6451                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6452
6453                 if (!is_valid_ether_addr(ibss.bssid))
6454                         return -EINVAL;
6455         }
6456         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6457         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6458
6459         if (info->attrs[NL80211_ATTR_IE]) {
6460                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6461                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6462         }
6463
6464         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6465         if (err)
6466                 return err;
6467
6468         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef))
6469                 return -EINVAL;
6470
6471         switch (ibss.chandef.width) {
6472         case NL80211_CHAN_WIDTH_5:
6473         case NL80211_CHAN_WIDTH_10:
6474         case NL80211_CHAN_WIDTH_20_NOHT:
6475                 break;
6476         case NL80211_CHAN_WIDTH_20:
6477         case NL80211_CHAN_WIDTH_40:
6478                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6479                         break;
6480         default:
6481                 return -EINVAL;
6482         }
6483
6484         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6485         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6486
6487         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6488                 u8 *rates =
6489                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6490                 int n_rates =
6491                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6492                 struct ieee80211_supported_band *sband =
6493                         wiphy->bands[ibss.chandef.chan->band];
6494
6495                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6496                                              &ibss.basic_rates);
6497                 if (err)
6498                         return err;
6499         }
6500
6501         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6502                 memcpy(&ibss.ht_capa_mask,
6503                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6504                        sizeof(ibss.ht_capa_mask));
6505
6506         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6507                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6508                         return -EINVAL;
6509                 memcpy(&ibss.ht_capa,
6510                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6511                        sizeof(ibss.ht_capa));
6512         }
6513
6514         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6515             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6516                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6517                 return -EINVAL;
6518
6519         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6520                 bool no_ht = false;
6521
6522                 connkeys = nl80211_parse_connkeys(rdev,
6523                                           info->attrs[NL80211_ATTR_KEYS],
6524                                           &no_ht);
6525                 if (IS_ERR(connkeys))
6526                         return PTR_ERR(connkeys);
6527
6528                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
6529                     no_ht) {
6530                         kfree(connkeys);
6531                         return -EINVAL;
6532                 }
6533         }
6534
6535         ibss.control_port =
6536                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
6537
6538         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
6539         if (err)
6540                 kfree(connkeys);
6541         return err;
6542 }
6543
6544 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
6545 {
6546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6547         struct net_device *dev = info->user_ptr[1];
6548
6549         if (!rdev->ops->leave_ibss)
6550                 return -EOPNOTSUPP;
6551
6552         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6553                 return -EOPNOTSUPP;
6554
6555         return cfg80211_leave_ibss(rdev, dev, false);
6556 }
6557
6558 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
6559 {
6560         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6561         struct net_device *dev = info->user_ptr[1];
6562         int mcast_rate[IEEE80211_NUM_BANDS];
6563         u32 nla_rate;
6564         int err;
6565
6566         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
6567             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6568                 return -EOPNOTSUPP;
6569
6570         if (!rdev->ops->set_mcast_rate)
6571                 return -EOPNOTSUPP;
6572
6573         memset(mcast_rate, 0, sizeof(mcast_rate));
6574
6575         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
6576                 return -EINVAL;
6577
6578         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
6579         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
6580                 return -EINVAL;
6581
6582         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
6583
6584         return err;
6585 }
6586
6587
6588 #ifdef CONFIG_NL80211_TESTMODE
6589 static struct genl_multicast_group nl80211_testmode_mcgrp = {
6590         .name = "testmode",
6591 };
6592
6593 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
6594 {
6595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6596         int err;
6597
6598         if (!info->attrs[NL80211_ATTR_TESTDATA])
6599                 return -EINVAL;
6600
6601         err = -EOPNOTSUPP;
6602         if (rdev->ops->testmode_cmd) {
6603                 rdev->testmode_info = info;
6604                 err = rdev_testmode_cmd(rdev,
6605                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
6606                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
6607                 rdev->testmode_info = NULL;
6608         }
6609
6610         return err;
6611 }
6612
6613 static int nl80211_testmode_dump(struct sk_buff *skb,
6614                                  struct netlink_callback *cb)
6615 {
6616         struct cfg80211_registered_device *rdev;
6617         int err;
6618         long phy_idx;
6619         void *data = NULL;
6620         int data_len = 0;
6621
6622         rtnl_lock();
6623
6624         if (cb->args[0]) {
6625                 /*
6626                  * 0 is a valid index, but not valid for args[0],
6627                  * so we need to offset by 1.
6628                  */
6629                 phy_idx = cb->args[0] - 1;
6630         } else {
6631                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
6632                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
6633                                   nl80211_policy);
6634                 if (err)
6635                         goto out_err;
6636
6637                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
6638                                                   nl80211_fam.attrbuf);
6639                 if (IS_ERR(rdev)) {
6640                         err = PTR_ERR(rdev);
6641                         goto out_err;
6642                 }
6643                 phy_idx = rdev->wiphy_idx;
6644                 rdev = NULL;
6645
6646                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
6647                         cb->args[1] =
6648                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
6649         }
6650
6651         if (cb->args[1]) {
6652                 data = nla_data((void *)cb->args[1]);
6653                 data_len = nla_len((void *)cb->args[1]);
6654         }
6655
6656         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
6657         if (!rdev) {
6658                 err = -ENOENT;
6659                 goto out_err;
6660         }
6661
6662         if (!rdev->ops->testmode_dump) {
6663                 err = -EOPNOTSUPP;
6664                 goto out_err;
6665         }
6666
6667         while (1) {
6668                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
6669                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
6670                                            NL80211_CMD_TESTMODE);
6671                 struct nlattr *tmdata;
6672
6673                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
6674                         genlmsg_cancel(skb, hdr);
6675                         break;
6676                 }
6677
6678                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6679                 if (!tmdata) {
6680                         genlmsg_cancel(skb, hdr);
6681                         break;
6682                 }
6683                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
6684                 nla_nest_end(skb, tmdata);
6685
6686                 if (err == -ENOBUFS || err == -ENOENT) {
6687                         genlmsg_cancel(skb, hdr);
6688                         break;
6689                 } else if (err) {
6690                         genlmsg_cancel(skb, hdr);
6691                         goto out_err;
6692                 }
6693
6694                 genlmsg_end(skb, hdr);
6695         }
6696
6697         err = skb->len;
6698         /* see above */
6699         cb->args[0] = phy_idx + 1;
6700  out_err:
6701         rtnl_unlock();
6702         return err;
6703 }
6704
6705 static struct sk_buff *
6706 __cfg80211_testmode_alloc_skb(struct cfg80211_registered_device *rdev,
6707                               int approxlen, u32 portid, u32 seq, gfp_t gfp)
6708 {
6709         struct sk_buff *skb;
6710         void *hdr;
6711         struct nlattr *data;
6712
6713         skb = nlmsg_new(approxlen + 100, gfp);
6714         if (!skb)
6715                 return NULL;
6716
6717         hdr = nl80211hdr_put(skb, portid, seq, 0, NL80211_CMD_TESTMODE);
6718         if (!hdr) {
6719                 kfree_skb(skb);
6720                 return NULL;
6721         }
6722
6723         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
6724                 goto nla_put_failure;
6725         data = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
6726
6727         ((void **)skb->cb)[0] = rdev;
6728         ((void **)skb->cb)[1] = hdr;
6729         ((void **)skb->cb)[2] = data;
6730
6731         return skb;
6732
6733  nla_put_failure:
6734         kfree_skb(skb);
6735         return NULL;
6736 }
6737
6738 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy,
6739                                                   int approxlen)
6740 {
6741         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6742
6743         if (WARN_ON(!rdev->testmode_info))
6744                 return NULL;
6745
6746         return __cfg80211_testmode_alloc_skb(rdev, approxlen,
6747                                 rdev->testmode_info->snd_portid,
6748                                 rdev->testmode_info->snd_seq,
6749                                 GFP_KERNEL);
6750 }
6751 EXPORT_SYMBOL(cfg80211_testmode_alloc_reply_skb);
6752
6753 int cfg80211_testmode_reply(struct sk_buff *skb)
6754 {
6755         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6756         void *hdr = ((void **)skb->cb)[1];
6757         struct nlattr *data = ((void **)skb->cb)[2];
6758
6759         if (WARN_ON(!rdev->testmode_info)) {
6760                 kfree_skb(skb);
6761                 return -EINVAL;
6762         }
6763
6764         nla_nest_end(skb, data);
6765         genlmsg_end(skb, hdr);
6766         return genlmsg_reply(skb, rdev->testmode_info);
6767 }
6768 EXPORT_SYMBOL(cfg80211_testmode_reply);
6769
6770 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy,
6771                                                   int approxlen, gfp_t gfp)
6772 {
6773         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
6774
6775         return __cfg80211_testmode_alloc_skb(rdev, approxlen, 0, 0, gfp);
6776 }
6777 EXPORT_SYMBOL(cfg80211_testmode_alloc_event_skb);
6778
6779 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp)
6780 {
6781         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
6782         void *hdr = ((void **)skb->cb)[1];
6783         struct nlattr *data = ((void **)skb->cb)[2];
6784
6785         nla_nest_end(skb, data);
6786         genlmsg_end(skb, hdr);
6787         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), skb, 0,
6788                                 nl80211_testmode_mcgrp.id, gfp);
6789 }
6790 EXPORT_SYMBOL(cfg80211_testmode_event);
6791 #endif
6792
6793 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
6794 {
6795         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6796         struct net_device *dev = info->user_ptr[1];
6797         struct cfg80211_connect_params connect;
6798         struct wiphy *wiphy;
6799         struct cfg80211_cached_keys *connkeys = NULL;
6800         int err;
6801
6802         memset(&connect, 0, sizeof(connect));
6803
6804         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6805                 return -EINVAL;
6806
6807         if (!info->attrs[NL80211_ATTR_SSID] ||
6808             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6809                 return -EINVAL;
6810
6811         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
6812                 connect.auth_type =
6813                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6814                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
6815                                              NL80211_CMD_CONNECT))
6816                         return -EINVAL;
6817         } else
6818                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
6819
6820         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
6821
6822         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
6823                                       NL80211_MAX_NR_CIPHER_SUITES);
6824         if (err)
6825                 return err;
6826
6827         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6828             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6829                 return -EOPNOTSUPP;
6830
6831         wiphy = &rdev->wiphy;
6832
6833         connect.bg_scan_period = -1;
6834         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
6835                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
6836                 connect.bg_scan_period =
6837                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
6838         }
6839
6840         if (info->attrs[NL80211_ATTR_MAC])
6841                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6842         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6843         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6844
6845         if (info->attrs[NL80211_ATTR_IE]) {
6846                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6847                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6848         }
6849
6850         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6851                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6852                 if (connect.mfp != NL80211_MFP_REQUIRED &&
6853                     connect.mfp != NL80211_MFP_NO)
6854                         return -EINVAL;
6855         } else {
6856                 connect.mfp = NL80211_MFP_NO;
6857         }
6858
6859         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
6860                 connect.channel =
6861                         ieee80211_get_channel(wiphy,
6862                             nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
6863                 if (!connect.channel ||
6864                     connect.channel->flags & IEEE80211_CHAN_DISABLED)
6865                         return -EINVAL;
6866         }
6867
6868         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
6869                 connkeys = nl80211_parse_connkeys(rdev,
6870                                           info->attrs[NL80211_ATTR_KEYS], NULL);
6871                 if (IS_ERR(connkeys))
6872                         return PTR_ERR(connkeys);
6873         }
6874
6875         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6876                 connect.flags |= ASSOC_REQ_DISABLE_HT;
6877
6878         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6879                 memcpy(&connect.ht_capa_mask,
6880                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6881                        sizeof(connect.ht_capa_mask));
6882
6883         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6884                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
6885                         kfree(connkeys);
6886                         return -EINVAL;
6887                 }
6888                 memcpy(&connect.ht_capa,
6889                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6890                        sizeof(connect.ht_capa));
6891         }
6892
6893         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6894                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
6895
6896         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6897                 memcpy(&connect.vht_capa_mask,
6898                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6899                        sizeof(connect.vht_capa_mask));
6900
6901         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6902                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
6903                         kfree(connkeys);
6904                         return -EINVAL;
6905                 }
6906                 memcpy(&connect.vht_capa,
6907                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6908                        sizeof(connect.vht_capa));
6909         }
6910
6911         wdev_lock(dev->ieee80211_ptr);
6912         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
6913         wdev_unlock(dev->ieee80211_ptr);
6914         if (err)
6915                 kfree(connkeys);
6916         return err;
6917 }
6918
6919 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
6920 {
6921         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6922         struct net_device *dev = info->user_ptr[1];
6923         u16 reason;
6924         int ret;
6925
6926         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6927                 reason = WLAN_REASON_DEAUTH_LEAVING;
6928         else
6929                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6930
6931         if (reason == 0)
6932                 return -EINVAL;
6933
6934         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6935             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6936                 return -EOPNOTSUPP;
6937
6938         wdev_lock(dev->ieee80211_ptr);
6939         ret = cfg80211_disconnect(rdev, dev, reason, true);
6940         wdev_unlock(dev->ieee80211_ptr);
6941         return ret;
6942 }
6943
6944 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
6945 {
6946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6947         struct net *net;
6948         int err;
6949         u32 pid;
6950
6951         if (!info->attrs[NL80211_ATTR_PID])
6952                 return -EINVAL;
6953
6954         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
6955
6956         net = get_net_ns_by_pid(pid);
6957         if (IS_ERR(net))
6958                 return PTR_ERR(net);
6959
6960         err = 0;
6961
6962         /* check if anything to do */
6963         if (!net_eq(wiphy_net(&rdev->wiphy), net))
6964                 err = cfg80211_switch_netns(rdev, net);
6965
6966         put_net(net);
6967         return err;
6968 }
6969
6970 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
6971 {
6972         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6973         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
6974                         struct cfg80211_pmksa *pmksa) = NULL;
6975         struct net_device *dev = info->user_ptr[1];
6976         struct cfg80211_pmksa pmksa;
6977
6978         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
6979
6980         if (!info->attrs[NL80211_ATTR_MAC])
6981                 return -EINVAL;
6982
6983         if (!info->attrs[NL80211_ATTR_PMKID])
6984                 return -EINVAL;
6985
6986         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
6987         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6988
6989         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6990             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6991                 return -EOPNOTSUPP;
6992
6993         switch (info->genlhdr->cmd) {
6994         case NL80211_CMD_SET_PMKSA:
6995                 rdev_ops = rdev->ops->set_pmksa;
6996                 break;
6997         case NL80211_CMD_DEL_PMKSA:
6998                 rdev_ops = rdev->ops->del_pmksa;
6999                 break;
7000         default:
7001                 WARN_ON(1);
7002                 break;
7003         }
7004
7005         if (!rdev_ops)
7006                 return -EOPNOTSUPP;
7007
7008         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7009 }
7010
7011 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7012 {
7013         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7014         struct net_device *dev = info->user_ptr[1];
7015
7016         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7017             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7018                 return -EOPNOTSUPP;
7019
7020         if (!rdev->ops->flush_pmksa)
7021                 return -EOPNOTSUPP;
7022
7023         return rdev_flush_pmksa(rdev, dev);
7024 }
7025
7026 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7027 {
7028         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7029         struct net_device *dev = info->user_ptr[1];
7030         u8 action_code, dialog_token;
7031         u16 status_code;
7032         u8 *peer;
7033
7034         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7035             !rdev->ops->tdls_mgmt)
7036                 return -EOPNOTSUPP;
7037
7038         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7039             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7040             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7041             !info->attrs[NL80211_ATTR_IE] ||
7042             !info->attrs[NL80211_ATTR_MAC])
7043                 return -EINVAL;
7044
7045         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7046         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7047         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7048         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7049
7050         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7051                               dialog_token, status_code,
7052                               nla_data(info->attrs[NL80211_ATTR_IE]),
7053                               nla_len(info->attrs[NL80211_ATTR_IE]));
7054 }
7055
7056 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7057 {
7058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7059         struct net_device *dev = info->user_ptr[1];
7060         enum nl80211_tdls_operation operation;
7061         u8 *peer;
7062
7063         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7064             !rdev->ops->tdls_oper)
7065                 return -EOPNOTSUPP;
7066
7067         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7068             !info->attrs[NL80211_ATTR_MAC])
7069                 return -EINVAL;
7070
7071         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7072         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7073
7074         return rdev_tdls_oper(rdev, dev, peer, operation);
7075 }
7076
7077 static int nl80211_remain_on_channel(struct sk_buff *skb,
7078                                      struct genl_info *info)
7079 {
7080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7081         struct wireless_dev *wdev = info->user_ptr[1];
7082         struct cfg80211_chan_def chandef;
7083         struct sk_buff *msg;
7084         void *hdr;
7085         u64 cookie;
7086         u32 duration;
7087         int err;
7088
7089         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7090             !info->attrs[NL80211_ATTR_DURATION])
7091                 return -EINVAL;
7092
7093         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7094
7095         if (!rdev->ops->remain_on_channel ||
7096             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7097                 return -EOPNOTSUPP;
7098
7099         /*
7100          * We should be on that channel for at least a minimum amount of
7101          * time (10ms) but no longer than the driver supports.
7102          */
7103         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7104             duration > rdev->wiphy.max_remain_on_channel_duration)
7105                 return -EINVAL;
7106
7107         err = nl80211_parse_chandef(rdev, info, &chandef);
7108         if (err)
7109                 return err;
7110
7111         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7112         if (!msg)
7113                 return -ENOMEM;
7114
7115         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7116                              NL80211_CMD_REMAIN_ON_CHANNEL);
7117
7118         if (IS_ERR(hdr)) {
7119                 err = PTR_ERR(hdr);
7120                 goto free_msg;
7121         }
7122
7123         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7124                                      duration, &cookie);
7125
7126         if (err)
7127                 goto free_msg;
7128
7129         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7130                 goto nla_put_failure;
7131
7132         genlmsg_end(msg, hdr);
7133
7134         return genlmsg_reply(msg, info);
7135
7136  nla_put_failure:
7137         err = -ENOBUFS;
7138  free_msg:
7139         nlmsg_free(msg);
7140         return err;
7141 }
7142
7143 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7144                                             struct genl_info *info)
7145 {
7146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7147         struct wireless_dev *wdev = info->user_ptr[1];
7148         u64 cookie;
7149
7150         if (!info->attrs[NL80211_ATTR_COOKIE])
7151                 return -EINVAL;
7152
7153         if (!rdev->ops->cancel_remain_on_channel)
7154                 return -EOPNOTSUPP;
7155
7156         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7157
7158         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7159 }
7160
7161 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7162                            u8 *rates, u8 rates_len)
7163 {
7164         u8 i;
7165         u32 mask = 0;
7166
7167         for (i = 0; i < rates_len; i++) {
7168                 int rate = (rates[i] & 0x7f) * 5;
7169                 int ridx;
7170                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7171                         struct ieee80211_rate *srate =
7172                                 &sband->bitrates[ridx];
7173                         if (rate == srate->bitrate) {
7174                                 mask |= 1 << ridx;
7175                                 break;
7176                         }
7177                 }
7178                 if (ridx == sband->n_bitrates)
7179                         return 0; /* rate not found */
7180         }
7181
7182         return mask;
7183 }
7184
7185 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7186                                u8 *rates, u8 rates_len,
7187                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7188 {
7189         u8 i;
7190
7191         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7192
7193         for (i = 0; i < rates_len; i++) {
7194                 int ridx, rbit;
7195
7196                 ridx = rates[i] / 8;
7197                 rbit = BIT(rates[i] % 8);
7198
7199                 /* check validity */
7200                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7201                         return false;
7202
7203                 /* check availability */
7204                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7205                         mcs[ridx] |= rbit;
7206                 else
7207                         return false;
7208         }
7209
7210         return true;
7211 }
7212
7213 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7214         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7215                                     .len = NL80211_MAX_SUPP_RATES },
7216         [NL80211_TXRATE_MCS] = { .type = NLA_BINARY,
7217                                  .len = NL80211_MAX_SUPP_HT_RATES },
7218 };
7219
7220 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7221                                        struct genl_info *info)
7222 {
7223         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7224         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7225         struct cfg80211_bitrate_mask mask;
7226         int rem, i;
7227         struct net_device *dev = info->user_ptr[1];
7228         struct nlattr *tx_rates;
7229         struct ieee80211_supported_band *sband;
7230
7231         if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
7232                 return -EINVAL;
7233
7234         if (!rdev->ops->set_bitrate_mask)
7235                 return -EOPNOTSUPP;
7236
7237         memset(&mask, 0, sizeof(mask));
7238         /* Default to all rates enabled */
7239         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7240                 sband = rdev->wiphy.bands[i];
7241                 mask.control[i].legacy =
7242                         sband ? (1 << sband->n_bitrates) - 1 : 0;
7243                 if (sband)
7244                         memcpy(mask.control[i].mcs,
7245                                sband->ht_cap.mcs.rx_mask,
7246                                sizeof(mask.control[i].mcs));
7247                 else
7248                         memset(mask.control[i].mcs, 0,
7249                                sizeof(mask.control[i].mcs));
7250         }
7251
7252         /*
7253          * The nested attribute uses enum nl80211_band as the index. This maps
7254          * directly to the enum ieee80211_band values used in cfg80211.
7255          */
7256         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7257         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
7258         {
7259                 enum ieee80211_band band = nla_type(tx_rates);
7260                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7261                         return -EINVAL;
7262                 sband = rdev->wiphy.bands[band];
7263                 if (sband == NULL)
7264                         return -EINVAL;
7265                 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7266                           nla_len(tx_rates), nl80211_txattr_policy);
7267                 if (tb[NL80211_TXRATE_LEGACY]) {
7268                         mask.control[band].legacy = rateset_to_mask(
7269                                 sband,
7270                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7271                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7272                         if ((mask.control[band].legacy == 0) &&
7273                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7274                                 return -EINVAL;
7275                 }
7276                 if (tb[NL80211_TXRATE_MCS]) {
7277                         if (!ht_rateset_to_mask(
7278                                         sband,
7279                                         nla_data(tb[NL80211_TXRATE_MCS]),
7280                                         nla_len(tb[NL80211_TXRATE_MCS]),
7281                                         mask.control[band].mcs))
7282                                 return -EINVAL;
7283                 }
7284
7285                 if (mask.control[band].legacy == 0) {
7286                         /* don't allow empty legacy rates if HT
7287                          * is not even supported. */
7288                         if (!rdev->wiphy.bands[band]->ht_cap.ht_supported)
7289                                 return -EINVAL;
7290
7291                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7292                                 if (mask.control[band].mcs[i])
7293                                         break;
7294
7295                         /* legacy and mcs rates may not be both empty */
7296                         if (i == IEEE80211_HT_MCS_MASK_LEN)
7297                                 return -EINVAL;
7298                 }
7299         }
7300
7301         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7302 }
7303
7304 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7305 {
7306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7307         struct wireless_dev *wdev = info->user_ptr[1];
7308         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7309
7310         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7311                 return -EINVAL;
7312
7313         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7314                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7315
7316         switch (wdev->iftype) {
7317         case NL80211_IFTYPE_STATION:
7318         case NL80211_IFTYPE_ADHOC:
7319         case NL80211_IFTYPE_P2P_CLIENT:
7320         case NL80211_IFTYPE_AP:
7321         case NL80211_IFTYPE_AP_VLAN:
7322         case NL80211_IFTYPE_MESH_POINT:
7323         case NL80211_IFTYPE_P2P_GO:
7324         case NL80211_IFTYPE_P2P_DEVICE:
7325                 break;
7326         default:
7327                 return -EOPNOTSUPP;
7328         }
7329
7330         /* not much point in registering if we can't reply */
7331         if (!rdev->ops->mgmt_tx)
7332                 return -EOPNOTSUPP;
7333
7334         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7335                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7336                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7337 }
7338
7339 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7340 {
7341         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7342         struct wireless_dev *wdev = info->user_ptr[1];
7343         struct cfg80211_chan_def chandef;
7344         int err;
7345         void *hdr = NULL;
7346         u64 cookie;
7347         struct sk_buff *msg = NULL;
7348         unsigned int wait = 0;
7349         bool offchan, no_cck, dont_wait_for_ack;
7350
7351         dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
7352
7353         if (!info->attrs[NL80211_ATTR_FRAME])
7354                 return -EINVAL;
7355
7356         if (!rdev->ops->mgmt_tx)
7357                 return -EOPNOTSUPP;
7358
7359         switch (wdev->iftype) {
7360         case NL80211_IFTYPE_P2P_DEVICE:
7361                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7362                         return -EINVAL;
7363         case NL80211_IFTYPE_STATION:
7364         case NL80211_IFTYPE_ADHOC:
7365         case NL80211_IFTYPE_P2P_CLIENT:
7366         case NL80211_IFTYPE_AP:
7367         case NL80211_IFTYPE_AP_VLAN:
7368         case NL80211_IFTYPE_MESH_POINT:
7369         case NL80211_IFTYPE_P2P_GO:
7370                 break;
7371         default:
7372                 return -EOPNOTSUPP;
7373         }
7374
7375         if (info->attrs[NL80211_ATTR_DURATION]) {
7376                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7377                         return -EINVAL;
7378                 wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7379
7380                 /*
7381                  * We should wait on the channel for at least a minimum amount
7382                  * of time (10ms) but no longer than the driver supports.
7383                  */
7384                 if (wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7385                     wait > rdev->wiphy.max_remain_on_channel_duration)
7386                         return -EINVAL;
7387
7388         }
7389
7390         offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
7391
7392         if (offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7393                 return -EINVAL;
7394
7395         no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7396
7397         /* get the channel if any has been specified, otherwise pass NULL to
7398          * the driver. The latter will use the current one
7399          */
7400         chandef.chan = NULL;
7401         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7402                 err = nl80211_parse_chandef(rdev, info, &chandef);
7403                 if (err)
7404                         return err;
7405         }
7406
7407         if (!chandef.chan && offchan)
7408                 return -EINVAL;
7409
7410         if (!dont_wait_for_ack) {
7411                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7412                 if (!msg)
7413                         return -ENOMEM;
7414
7415                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7416                                      NL80211_CMD_FRAME);
7417
7418                 if (IS_ERR(hdr)) {
7419                         err = PTR_ERR(hdr);
7420                         goto free_msg;
7421                 }
7422         }
7423
7424         err = cfg80211_mlme_mgmt_tx(rdev, wdev, chandef.chan, offchan, wait,
7425                                     nla_data(info->attrs[NL80211_ATTR_FRAME]),
7426                                     nla_len(info->attrs[NL80211_ATTR_FRAME]),
7427                                     no_cck, dont_wait_for_ack, &cookie);
7428         if (err)
7429                 goto free_msg;
7430
7431         if (msg) {
7432                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7433                         goto nla_put_failure;
7434
7435                 genlmsg_end(msg, hdr);
7436                 return genlmsg_reply(msg, info);
7437         }
7438
7439         return 0;
7440
7441  nla_put_failure:
7442         err = -ENOBUFS;
7443  free_msg:
7444         nlmsg_free(msg);
7445         return err;
7446 }
7447
7448 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
7449 {
7450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7451         struct wireless_dev *wdev = info->user_ptr[1];
7452         u64 cookie;
7453
7454         if (!info->attrs[NL80211_ATTR_COOKIE])
7455                 return -EINVAL;
7456
7457         if (!rdev->ops->mgmt_tx_cancel_wait)
7458                 return -EOPNOTSUPP;
7459
7460         switch (wdev->iftype) {
7461         case NL80211_IFTYPE_STATION:
7462         case NL80211_IFTYPE_ADHOC:
7463         case NL80211_IFTYPE_P2P_CLIENT:
7464         case NL80211_IFTYPE_AP:
7465         case NL80211_IFTYPE_AP_VLAN:
7466         case NL80211_IFTYPE_P2P_GO:
7467         case NL80211_IFTYPE_P2P_DEVICE:
7468                 break;
7469         default:
7470                 return -EOPNOTSUPP;
7471         }
7472
7473         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7474
7475         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
7476 }
7477
7478 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
7479 {
7480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7481         struct wireless_dev *wdev;
7482         struct net_device *dev = info->user_ptr[1];
7483         u8 ps_state;
7484         bool state;
7485         int err;
7486
7487         if (!info->attrs[NL80211_ATTR_PS_STATE])
7488                 return -EINVAL;
7489
7490         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
7491
7492         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
7493                 return -EINVAL;
7494
7495         wdev = dev->ieee80211_ptr;
7496
7497         if (!rdev->ops->set_power_mgmt)
7498                 return -EOPNOTSUPP;
7499
7500         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
7501
7502         if (state == wdev->ps)
7503                 return 0;
7504
7505         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
7506         if (!err)
7507                 wdev->ps = state;
7508         return err;
7509 }
7510
7511 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
7512 {
7513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7514         enum nl80211_ps_state ps_state;
7515         struct wireless_dev *wdev;
7516         struct net_device *dev = info->user_ptr[1];
7517         struct sk_buff *msg;
7518         void *hdr;
7519         int err;
7520
7521         wdev = dev->ieee80211_ptr;
7522
7523         if (!rdev->ops->set_power_mgmt)
7524                 return -EOPNOTSUPP;
7525
7526         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7527         if (!msg)
7528                 return -ENOMEM;
7529
7530         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7531                              NL80211_CMD_GET_POWER_SAVE);
7532         if (!hdr) {
7533                 err = -ENOBUFS;
7534                 goto free_msg;
7535         }
7536
7537         if (wdev->ps)
7538                 ps_state = NL80211_PS_ENABLED;
7539         else
7540                 ps_state = NL80211_PS_DISABLED;
7541
7542         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
7543                 goto nla_put_failure;
7544
7545         genlmsg_end(msg, hdr);
7546         return genlmsg_reply(msg, info);
7547
7548  nla_put_failure:
7549         err = -ENOBUFS;
7550  free_msg:
7551         nlmsg_free(msg);
7552         return err;
7553 }
7554
7555 static struct nla_policy
7556 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = {
7557         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
7558         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
7559         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
7560         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
7561         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
7562         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
7563 };
7564
7565 static int nl80211_set_cqm_txe(struct genl_info *info,
7566                                u32 rate, u32 pkts, u32 intvl)
7567 {
7568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7569         struct wireless_dev *wdev;
7570         struct net_device *dev = info->user_ptr[1];
7571
7572         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
7573                 return -EINVAL;
7574
7575         wdev = dev->ieee80211_ptr;
7576
7577         if (!rdev->ops->set_cqm_txe_config)
7578                 return -EOPNOTSUPP;
7579
7580         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7581             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7582                 return -EOPNOTSUPP;
7583
7584         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
7585 }
7586
7587 static int nl80211_set_cqm_rssi(struct genl_info *info,
7588                                 s32 threshold, u32 hysteresis)
7589 {
7590         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7591         struct wireless_dev *wdev;
7592         struct net_device *dev = info->user_ptr[1];
7593
7594         if (threshold > 0)
7595                 return -EINVAL;
7596
7597         wdev = dev->ieee80211_ptr;
7598
7599         if (!rdev->ops->set_cqm_rssi_config)
7600                 return -EOPNOTSUPP;
7601
7602         if (wdev->iftype != NL80211_IFTYPE_STATION &&
7603             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
7604                 return -EOPNOTSUPP;
7605
7606         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
7607 }
7608
7609 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
7610 {
7611         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
7612         struct nlattr *cqm;
7613         int err;
7614
7615         cqm = info->attrs[NL80211_ATTR_CQM];
7616         if (!cqm) {
7617                 err = -EINVAL;
7618                 goto out;
7619         }
7620
7621         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
7622                                nl80211_attr_cqm_policy);
7623         if (err)
7624                 goto out;
7625
7626         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
7627             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
7628                 s32 threshold;
7629                 u32 hysteresis;
7630                 threshold = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
7631                 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
7632                 err = nl80211_set_cqm_rssi(info, threshold, hysteresis);
7633         } else if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
7634                    attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
7635                    attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
7636                 u32 rate, pkts, intvl;
7637                 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
7638                 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
7639                 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
7640                 err = nl80211_set_cqm_txe(info, rate, pkts, intvl);
7641         } else
7642                 err = -EINVAL;
7643
7644 out:
7645         return err;
7646 }
7647
7648 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
7649 {
7650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7651         struct net_device *dev = info->user_ptr[1];
7652         struct mesh_config cfg;
7653         struct mesh_setup setup;
7654         int err;
7655
7656         /* start with default */
7657         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
7658         memcpy(&setup, &default_mesh_setup, sizeof(setup));
7659
7660         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
7661                 /* and parse parameters if given */
7662                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
7663                 if (err)
7664                         return err;
7665         }
7666
7667         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
7668             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
7669                 return -EINVAL;
7670
7671         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
7672         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
7673
7674         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7675             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
7676                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7677                         return -EINVAL;
7678
7679         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7680                 setup.beacon_interval =
7681                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7682                 if (setup.beacon_interval < 10 ||
7683                     setup.beacon_interval > 10000)
7684                         return -EINVAL;
7685         }
7686
7687         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
7688                 setup.dtim_period =
7689                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
7690                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
7691                         return -EINVAL;
7692         }
7693
7694         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
7695                 /* parse additional setup parameters if given */
7696                 err = nl80211_parse_mesh_setup(info, &setup);
7697                 if (err)
7698                         return err;
7699         }
7700
7701         if (setup.user_mpm)
7702                 cfg.auto_open_plinks = false;
7703
7704         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7705                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
7706                 if (err)
7707                         return err;
7708         } else {
7709                 /* cfg80211_join_mesh() will sort it out */
7710                 setup.chandef.chan = NULL;
7711         }
7712
7713         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7714                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7715                 int n_rates =
7716                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7717                 struct ieee80211_supported_band *sband;
7718
7719                 if (!setup.chandef.chan)
7720                         return -EINVAL;
7721
7722                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
7723
7724                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7725                                              &setup.basic_rates);
7726                 if (err)
7727                         return err;
7728         }
7729
7730         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
7731 }
7732
7733 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
7734 {
7735         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7736         struct net_device *dev = info->user_ptr[1];
7737
7738         return cfg80211_leave_mesh(rdev, dev);
7739 }
7740
7741 #ifdef CONFIG_PM
7742 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
7743                                         struct cfg80211_registered_device *rdev)
7744 {
7745         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
7746         struct nlattr *nl_pats, *nl_pat;
7747         int i, pat_len;
7748
7749         if (!wowlan->n_patterns)
7750                 return 0;
7751
7752         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
7753         if (!nl_pats)
7754                 return -ENOBUFS;
7755
7756         for (i = 0; i < wowlan->n_patterns; i++) {
7757                 nl_pat = nla_nest_start(msg, i + 1);
7758                 if (!nl_pat)
7759                         return -ENOBUFS;
7760                 pat_len = wowlan->patterns[i].pattern_len;
7761                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
7762                             wowlan->patterns[i].mask) ||
7763                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
7764                             wowlan->patterns[i].pattern) ||
7765                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
7766                                 wowlan->patterns[i].pkt_offset))
7767                         return -ENOBUFS;
7768                 nla_nest_end(msg, nl_pat);
7769         }
7770         nla_nest_end(msg, nl_pats);
7771
7772         return 0;
7773 }
7774
7775 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
7776                                    struct cfg80211_wowlan_tcp *tcp)
7777 {
7778         struct nlattr *nl_tcp;
7779
7780         if (!tcp)
7781                 return 0;
7782
7783         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
7784         if (!nl_tcp)
7785                 return -ENOBUFS;
7786
7787         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
7788             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
7789             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
7790             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
7791             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
7792             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
7793                     tcp->payload_len, tcp->payload) ||
7794             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
7795                         tcp->data_interval) ||
7796             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
7797                     tcp->wake_len, tcp->wake_data) ||
7798             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
7799                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
7800                 return -ENOBUFS;
7801
7802         if (tcp->payload_seq.len &&
7803             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
7804                     sizeof(tcp->payload_seq), &tcp->payload_seq))
7805                 return -ENOBUFS;
7806
7807         if (tcp->payload_tok.len &&
7808             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
7809                     sizeof(tcp->payload_tok) + tcp->tokens_size,
7810                     &tcp->payload_tok))
7811                 return -ENOBUFS;
7812
7813         nla_nest_end(msg, nl_tcp);
7814
7815         return 0;
7816 }
7817
7818 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
7819 {
7820         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7821         struct sk_buff *msg;
7822         void *hdr;
7823         u32 size = NLMSG_DEFAULT_SIZE;
7824
7825         if (!rdev->wiphy.wowlan)
7826                 return -EOPNOTSUPP;
7827
7828         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
7829                 /* adjust size to have room for all the data */
7830                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
7831                         rdev->wiphy.wowlan_config->tcp->payload_len +
7832                         rdev->wiphy.wowlan_config->tcp->wake_len +
7833                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
7834         }
7835
7836         msg = nlmsg_new(size, GFP_KERNEL);
7837         if (!msg)
7838                 return -ENOMEM;
7839
7840         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7841                              NL80211_CMD_GET_WOWLAN);
7842         if (!hdr)
7843                 goto nla_put_failure;
7844
7845         if (rdev->wiphy.wowlan_config) {
7846                 struct nlattr *nl_wowlan;
7847
7848                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
7849                 if (!nl_wowlan)
7850                         goto nla_put_failure;
7851
7852                 if ((rdev->wiphy.wowlan_config->any &&
7853                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
7854                     (rdev->wiphy.wowlan_config->disconnect &&
7855                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
7856                     (rdev->wiphy.wowlan_config->magic_pkt &&
7857                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
7858                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
7859                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
7860                     (rdev->wiphy.wowlan_config->eap_identity_req &&
7861                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
7862                     (rdev->wiphy.wowlan_config->four_way_handshake &&
7863                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
7864                     (rdev->wiphy.wowlan_config->rfkill_release &&
7865                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
7866                         goto nla_put_failure;
7867
7868                 if (nl80211_send_wowlan_patterns(msg, rdev))
7869                         goto nla_put_failure;
7870
7871                 if (nl80211_send_wowlan_tcp(msg,
7872                                             rdev->wiphy.wowlan_config->tcp))
7873                         goto nla_put_failure;
7874
7875                 nla_nest_end(msg, nl_wowlan);
7876         }
7877
7878         genlmsg_end(msg, hdr);
7879         return genlmsg_reply(msg, info);
7880
7881 nla_put_failure:
7882         nlmsg_free(msg);
7883         return -ENOBUFS;
7884 }
7885
7886 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
7887                                     struct nlattr *attr,
7888                                     struct cfg80211_wowlan *trig)
7889 {
7890         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
7891         struct cfg80211_wowlan_tcp *cfg;
7892         struct nl80211_wowlan_tcp_data_token *tok = NULL;
7893         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
7894         u32 size;
7895         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
7896         int err, port;
7897
7898         if (!rdev->wiphy.wowlan->tcp)
7899                 return -EINVAL;
7900
7901         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
7902                         nla_data(attr), nla_len(attr),
7903                         nl80211_wowlan_tcp_policy);
7904         if (err)
7905                 return err;
7906
7907         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
7908             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
7909             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
7910             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
7911             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
7912             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
7913             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
7914             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
7915                 return -EINVAL;
7916
7917         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
7918         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
7919                 return -EINVAL;
7920
7921         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
7922                         rdev->wiphy.wowlan->tcp->data_interval_max ||
7923             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
7924                 return -EINVAL;
7925
7926         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
7927         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
7928                 return -EINVAL;
7929
7930         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
7931         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
7932                 return -EINVAL;
7933
7934         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
7935                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7936
7937                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
7938                 tokens_size = tokln - sizeof(*tok);
7939
7940                 if (!tok->len || tokens_size % tok->len)
7941                         return -EINVAL;
7942                 if (!rdev->wiphy.wowlan->tcp->tok)
7943                         return -EINVAL;
7944                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
7945                         return -EINVAL;
7946                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
7947                         return -EINVAL;
7948                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
7949                         return -EINVAL;
7950                 if (tok->offset + tok->len > data_size)
7951                         return -EINVAL;
7952         }
7953
7954         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
7955                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
7956                 if (!rdev->wiphy.wowlan->tcp->seq)
7957                         return -EINVAL;
7958                 if (seq->len == 0 || seq->len > 4)
7959                         return -EINVAL;
7960                 if (seq->len + seq->offset > data_size)
7961                         return -EINVAL;
7962         }
7963
7964         size = sizeof(*cfg);
7965         size += data_size;
7966         size += wake_size + wake_mask_size;
7967         size += tokens_size;
7968
7969         cfg = kzalloc(size, GFP_KERNEL);
7970         if (!cfg)
7971                 return -ENOMEM;
7972         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
7973         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
7974         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
7975                ETH_ALEN);
7976         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
7977                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
7978         else
7979                 port = 0;
7980 #ifdef CONFIG_INET
7981         /* allocate a socket and port for it and use it */
7982         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
7983                             IPPROTO_TCP, &cfg->sock, 1);
7984         if (err) {
7985                 kfree(cfg);
7986                 return err;
7987         }
7988         if (inet_csk_get_port(cfg->sock->sk, port)) {
7989                 sock_release(cfg->sock);
7990                 kfree(cfg);
7991                 return -EADDRINUSE;
7992         }
7993         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
7994 #else
7995         if (!port) {
7996                 kfree(cfg);
7997                 return -EINVAL;
7998         }
7999         cfg->src_port = port;
8000 #endif
8001
8002         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8003         cfg->payload_len = data_size;
8004         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8005         memcpy((void *)cfg->payload,
8006                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8007                data_size);
8008         if (seq)
8009                 cfg->payload_seq = *seq;
8010         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8011         cfg->wake_len = wake_size;
8012         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8013         memcpy((void *)cfg->wake_data,
8014                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8015                wake_size);
8016         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8017                          data_size + wake_size;
8018         memcpy((void *)cfg->wake_mask,
8019                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8020                wake_mask_size);
8021         if (tok) {
8022                 cfg->tokens_size = tokens_size;
8023                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8024         }
8025
8026         trig->tcp = cfg;
8027
8028         return 0;
8029 }
8030
8031 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8032 {
8033         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8034         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8035         struct cfg80211_wowlan new_triggers = {};
8036         struct cfg80211_wowlan *ntrig;
8037         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8038         int err, i;
8039         bool prev_enabled = rdev->wiphy.wowlan_config;
8040
8041         if (!wowlan)
8042                 return -EOPNOTSUPP;
8043
8044         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8045                 cfg80211_rdev_free_wowlan(rdev);
8046                 rdev->wiphy.wowlan_config = NULL;
8047                 goto set_wakeup;
8048         }
8049
8050         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8051                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8052                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8053                         nl80211_wowlan_policy);
8054         if (err)
8055                 return err;
8056
8057         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8058                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8059                         return -EINVAL;
8060                 new_triggers.any = true;
8061         }
8062
8063         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8064                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8065                         return -EINVAL;
8066                 new_triggers.disconnect = true;
8067         }
8068
8069         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8070                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8071                         return -EINVAL;
8072                 new_triggers.magic_pkt = true;
8073         }
8074
8075         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8076                 return -EINVAL;
8077
8078         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8079                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8080                         return -EINVAL;
8081                 new_triggers.gtk_rekey_failure = true;
8082         }
8083
8084         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8085                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8086                         return -EINVAL;
8087                 new_triggers.eap_identity_req = true;
8088         }
8089
8090         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8091                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8092                         return -EINVAL;
8093                 new_triggers.four_way_handshake = true;
8094         }
8095
8096         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8097                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8098                         return -EINVAL;
8099                 new_triggers.rfkill_release = true;
8100         }
8101
8102         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8103                 struct nlattr *pat;
8104                 int n_patterns = 0;
8105                 int rem, pat_len, mask_len, pkt_offset;
8106                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8107
8108                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8109                                     rem)
8110                         n_patterns++;
8111                 if (n_patterns > wowlan->n_patterns)
8112                         return -EINVAL;
8113
8114                 new_triggers.patterns = kcalloc(n_patterns,
8115                                                 sizeof(new_triggers.patterns[0]),
8116                                                 GFP_KERNEL);
8117                 if (!new_triggers.patterns)
8118                         return -ENOMEM;
8119
8120                 new_triggers.n_patterns = n_patterns;
8121                 i = 0;
8122
8123                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8124                                     rem) {
8125                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8126                                   nla_len(pat), NULL);
8127                         err = -EINVAL;
8128                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8129                             !pat_tb[NL80211_PKTPAT_PATTERN])
8130                                 goto error;
8131                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8132                         mask_len = DIV_ROUND_UP(pat_len, 8);
8133                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8134                                 goto error;
8135                         if (pat_len > wowlan->pattern_max_len ||
8136                             pat_len < wowlan->pattern_min_len)
8137                                 goto error;
8138
8139                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8140                                 pkt_offset = 0;
8141                         else
8142                                 pkt_offset = nla_get_u32(
8143                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8144                         if (pkt_offset > wowlan->max_pkt_offset)
8145                                 goto error;
8146                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8147
8148                         new_triggers.patterns[i].mask =
8149                                 kmalloc(mask_len + pat_len, GFP_KERNEL);
8150                         if (!new_triggers.patterns[i].mask) {
8151                                 err = -ENOMEM;
8152                                 goto error;
8153                         }
8154                         new_triggers.patterns[i].pattern =
8155                                 new_triggers.patterns[i].mask + mask_len;
8156                         memcpy(new_triggers.patterns[i].mask,
8157                                nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8158                                mask_len);
8159                         new_triggers.patterns[i].pattern_len = pat_len;
8160                         memcpy(new_triggers.patterns[i].pattern,
8161                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8162                                pat_len);
8163                         i++;
8164                 }
8165         }
8166
8167         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8168                 err = nl80211_parse_wowlan_tcp(
8169                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8170                         &new_triggers);
8171                 if (err)
8172                         goto error;
8173         }
8174
8175         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8176         if (!ntrig) {
8177                 err = -ENOMEM;
8178                 goto error;
8179         }
8180         cfg80211_rdev_free_wowlan(rdev);
8181         rdev->wiphy.wowlan_config = ntrig;
8182
8183  set_wakeup:
8184         if (rdev->ops->set_wakeup &&
8185             prev_enabled != !!rdev->wiphy.wowlan_config)
8186                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8187
8188         return 0;
8189  error:
8190         for (i = 0; i < new_triggers.n_patterns; i++)
8191                 kfree(new_triggers.patterns[i].mask);
8192         kfree(new_triggers.patterns);
8193         if (new_triggers.tcp && new_triggers.tcp->sock)
8194                 sock_release(new_triggers.tcp->sock);
8195         kfree(new_triggers.tcp);
8196         return err;
8197 }
8198 #endif
8199
8200 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8201                                        struct cfg80211_registered_device *rdev)
8202 {
8203         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8204         int i, j, pat_len;
8205         struct cfg80211_coalesce_rules *rule;
8206
8207         if (!rdev->coalesce->n_rules)
8208                 return 0;
8209
8210         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8211         if (!nl_rules)
8212                 return -ENOBUFS;
8213
8214         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8215                 nl_rule = nla_nest_start(msg, i + 1);
8216                 if (!nl_rule)
8217                         return -ENOBUFS;
8218
8219                 rule = &rdev->coalesce->rules[i];
8220                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8221                                 rule->delay))
8222                         return -ENOBUFS;
8223
8224                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8225                                 rule->condition))
8226                         return -ENOBUFS;
8227
8228                 nl_pats = nla_nest_start(msg,
8229                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8230                 if (!nl_pats)
8231                         return -ENOBUFS;
8232
8233                 for (j = 0; j < rule->n_patterns; j++) {
8234                         nl_pat = nla_nest_start(msg, j + 1);
8235                         if (!nl_pat)
8236                                 return -ENOBUFS;
8237                         pat_len = rule->patterns[j].pattern_len;
8238                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8239                                     DIV_ROUND_UP(pat_len, 8),
8240                                     rule->patterns[j].mask) ||
8241                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8242                                     rule->patterns[j].pattern) ||
8243                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8244                                         rule->patterns[j].pkt_offset))
8245                                 return -ENOBUFS;
8246                         nla_nest_end(msg, nl_pat);
8247                 }
8248                 nla_nest_end(msg, nl_pats);
8249                 nla_nest_end(msg, nl_rule);
8250         }
8251         nla_nest_end(msg, nl_rules);
8252
8253         return 0;
8254 }
8255
8256 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8257 {
8258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8259         struct sk_buff *msg;
8260         void *hdr;
8261
8262         if (!rdev->wiphy.coalesce)
8263                 return -EOPNOTSUPP;
8264
8265         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8266         if (!msg)
8267                 return -ENOMEM;
8268
8269         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8270                              NL80211_CMD_GET_COALESCE);
8271         if (!hdr)
8272                 goto nla_put_failure;
8273
8274         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8275                 goto nla_put_failure;
8276
8277         genlmsg_end(msg, hdr);
8278         return genlmsg_reply(msg, info);
8279
8280 nla_put_failure:
8281         nlmsg_free(msg);
8282         return -ENOBUFS;
8283 }
8284
8285 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8286 {
8287         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8288         int i, j;
8289         struct cfg80211_coalesce_rules *rule;
8290
8291         if (!coalesce)
8292                 return;
8293
8294         for (i = 0; i < coalesce->n_rules; i++) {
8295                 rule = &coalesce->rules[i];
8296                 for (j = 0; j < rule->n_patterns; j++)
8297                         kfree(rule->patterns[j].mask);
8298                 kfree(rule->patterns);
8299         }
8300         kfree(coalesce->rules);
8301         kfree(coalesce);
8302         rdev->coalesce = NULL;
8303 }
8304
8305 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8306                                        struct nlattr *rule,
8307                                        struct cfg80211_coalesce_rules *new_rule)
8308 {
8309         int err, i;
8310         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8311         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8312         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8313         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8314
8315         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8316                         nla_len(rule), nl80211_coalesce_policy);
8317         if (err)
8318                 return err;
8319
8320         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8321                 new_rule->delay =
8322                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8323         if (new_rule->delay > coalesce->max_delay)
8324                 return -EINVAL;
8325
8326         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8327                 new_rule->condition =
8328                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8329         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8330             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8331                 return -EINVAL;
8332
8333         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8334                 return -EINVAL;
8335
8336         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8337                             rem)
8338                 n_patterns++;
8339         if (n_patterns > coalesce->n_patterns)
8340                 return -EINVAL;
8341
8342         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8343                                      GFP_KERNEL);
8344         if (!new_rule->patterns)
8345                 return -ENOMEM;
8346
8347         new_rule->n_patterns = n_patterns;
8348         i = 0;
8349
8350         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8351                             rem) {
8352                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8353                           nla_len(pat), NULL);
8354                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8355                     !pat_tb[NL80211_PKTPAT_PATTERN])
8356                         return -EINVAL;
8357                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8358                 mask_len = DIV_ROUND_UP(pat_len, 8);
8359                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8360                         return -EINVAL;
8361                 if (pat_len > coalesce->pattern_max_len ||
8362                     pat_len < coalesce->pattern_min_len)
8363                         return -EINVAL;
8364
8365                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8366                         pkt_offset = 0;
8367                 else
8368                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
8369                 if (pkt_offset > coalesce->max_pkt_offset)
8370                         return -EINVAL;
8371                 new_rule->patterns[i].pkt_offset = pkt_offset;
8372
8373                 new_rule->patterns[i].mask =
8374                         kmalloc(mask_len + pat_len, GFP_KERNEL);
8375                 if (!new_rule->patterns[i].mask)
8376                         return -ENOMEM;
8377                 new_rule->patterns[i].pattern =
8378                         new_rule->patterns[i].mask + mask_len;
8379                 memcpy(new_rule->patterns[i].mask,
8380                        nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len);
8381                 new_rule->patterns[i].pattern_len = pat_len;
8382                 memcpy(new_rule->patterns[i].pattern,
8383                        nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len);
8384                 i++;
8385         }
8386
8387         return 0;
8388 }
8389
8390 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
8391 {
8392         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8393         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8394         struct cfg80211_coalesce new_coalesce = {};
8395         struct cfg80211_coalesce *n_coalesce;
8396         int err, rem_rule, n_rules = 0, i, j;
8397         struct nlattr *rule;
8398         struct cfg80211_coalesce_rules *tmp_rule;
8399
8400         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
8401                 return -EOPNOTSUPP;
8402
8403         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
8404                 cfg80211_rdev_free_coalesce(rdev);
8405                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
8406                 return 0;
8407         }
8408
8409         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8410                             rem_rule)
8411                 n_rules++;
8412         if (n_rules > coalesce->n_rules)
8413                 return -EINVAL;
8414
8415         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
8416                                      GFP_KERNEL);
8417         if (!new_coalesce.rules)
8418                 return -ENOMEM;
8419
8420         new_coalesce.n_rules = n_rules;
8421         i = 0;
8422
8423         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
8424                             rem_rule) {
8425                 err = nl80211_parse_coalesce_rule(rdev, rule,
8426                                                   &new_coalesce.rules[i]);
8427                 if (err)
8428                         goto error;
8429
8430                 i++;
8431         }
8432
8433         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
8434         if (err)
8435                 goto error;
8436
8437         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
8438         if (!n_coalesce) {
8439                 err = -ENOMEM;
8440                 goto error;
8441         }
8442         cfg80211_rdev_free_coalesce(rdev);
8443         rdev->coalesce = n_coalesce;
8444
8445         return 0;
8446 error:
8447         for (i = 0; i < new_coalesce.n_rules; i++) {
8448                 tmp_rule = &new_coalesce.rules[i];
8449                 for (j = 0; j < tmp_rule->n_patterns; j++)
8450                         kfree(tmp_rule->patterns[j].mask);
8451                 kfree(tmp_rule->patterns);
8452         }
8453         kfree(new_coalesce.rules);
8454
8455         return err;
8456 }
8457
8458 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
8459 {
8460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8461         struct net_device *dev = info->user_ptr[1];
8462         struct wireless_dev *wdev = dev->ieee80211_ptr;
8463         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
8464         struct cfg80211_gtk_rekey_data rekey_data;
8465         int err;
8466
8467         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
8468                 return -EINVAL;
8469
8470         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
8471                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
8472                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
8473                         nl80211_rekey_policy);
8474         if (err)
8475                 return err;
8476
8477         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
8478                 return -ERANGE;
8479         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
8480                 return -ERANGE;
8481         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
8482                 return -ERANGE;
8483
8484         memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]),
8485                NL80211_KEK_LEN);
8486         memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]),
8487                NL80211_KCK_LEN);
8488         memcpy(rekey_data.replay_ctr,
8489                nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]),
8490                NL80211_REPLAY_CTR_LEN);
8491
8492         wdev_lock(wdev);
8493         if (!wdev->current_bss) {
8494                 err = -ENOTCONN;
8495                 goto out;
8496         }
8497
8498         if (!rdev->ops->set_rekey_data) {
8499                 err = -EOPNOTSUPP;
8500                 goto out;
8501         }
8502
8503         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
8504  out:
8505         wdev_unlock(wdev);
8506         return err;
8507 }
8508
8509 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
8510                                              struct genl_info *info)
8511 {
8512         struct net_device *dev = info->user_ptr[1];
8513         struct wireless_dev *wdev = dev->ieee80211_ptr;
8514
8515         if (wdev->iftype != NL80211_IFTYPE_AP &&
8516             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8517                 return -EINVAL;
8518
8519         if (wdev->ap_unexpected_nlportid)
8520                 return -EBUSY;
8521
8522         wdev->ap_unexpected_nlportid = info->snd_portid;
8523         return 0;
8524 }
8525
8526 static int nl80211_probe_client(struct sk_buff *skb,
8527                                 struct genl_info *info)
8528 {
8529         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8530         struct net_device *dev = info->user_ptr[1];
8531         struct wireless_dev *wdev = dev->ieee80211_ptr;
8532         struct sk_buff *msg;
8533         void *hdr;
8534         const u8 *addr;
8535         u64 cookie;
8536         int err;
8537
8538         if (wdev->iftype != NL80211_IFTYPE_AP &&
8539             wdev->iftype != NL80211_IFTYPE_P2P_GO)
8540                 return -EOPNOTSUPP;
8541
8542         if (!info->attrs[NL80211_ATTR_MAC])
8543                 return -EINVAL;
8544
8545         if (!rdev->ops->probe_client)
8546                 return -EOPNOTSUPP;
8547
8548         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8549         if (!msg)
8550                 return -ENOMEM;
8551
8552         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8553                              NL80211_CMD_PROBE_CLIENT);
8554
8555         if (IS_ERR(hdr)) {
8556                 err = PTR_ERR(hdr);
8557                 goto free_msg;
8558         }
8559
8560         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
8561
8562         err = rdev_probe_client(rdev, dev, addr, &cookie);
8563         if (err)
8564                 goto free_msg;
8565
8566         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8567                 goto nla_put_failure;
8568
8569         genlmsg_end(msg, hdr);
8570
8571         return genlmsg_reply(msg, info);
8572
8573  nla_put_failure:
8574         err = -ENOBUFS;
8575  free_msg:
8576         nlmsg_free(msg);
8577         return err;
8578 }
8579
8580 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
8581 {
8582         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8583         struct cfg80211_beacon_registration *reg, *nreg;
8584         int rv;
8585
8586         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
8587                 return -EOPNOTSUPP;
8588
8589         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
8590         if (!nreg)
8591                 return -ENOMEM;
8592
8593         /* First, check if already registered. */
8594         spin_lock_bh(&rdev->beacon_registrations_lock);
8595         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
8596                 if (reg->nlportid == info->snd_portid) {
8597                         rv = -EALREADY;
8598                         goto out_err;
8599                 }
8600         }
8601         /* Add it to the list */
8602         nreg->nlportid = info->snd_portid;
8603         list_add(&nreg->list, &rdev->beacon_registrations);
8604
8605         spin_unlock_bh(&rdev->beacon_registrations_lock);
8606
8607         return 0;
8608 out_err:
8609         spin_unlock_bh(&rdev->beacon_registrations_lock);
8610         kfree(nreg);
8611         return rv;
8612 }
8613
8614 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
8615 {
8616         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8617         struct wireless_dev *wdev = info->user_ptr[1];
8618         int err;
8619
8620         if (!rdev->ops->start_p2p_device)
8621                 return -EOPNOTSUPP;
8622
8623         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8624                 return -EOPNOTSUPP;
8625
8626         if (wdev->p2p_started)
8627                 return 0;
8628
8629         err = cfg80211_can_add_interface(rdev, wdev->iftype);
8630         if (err)
8631                 return err;
8632
8633         err = rdev_start_p2p_device(rdev, wdev);
8634         if (err)
8635                 return err;
8636
8637         wdev->p2p_started = true;
8638         rdev->opencount++;
8639
8640         return 0;
8641 }
8642
8643 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
8644 {
8645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8646         struct wireless_dev *wdev = info->user_ptr[1];
8647
8648         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
8649                 return -EOPNOTSUPP;
8650
8651         if (!rdev->ops->stop_p2p_device)
8652                 return -EOPNOTSUPP;
8653
8654         cfg80211_stop_p2p_device(rdev, wdev);
8655
8656         return 0;
8657 }
8658
8659 static int nl80211_get_protocol_features(struct sk_buff *skb,
8660                                          struct genl_info *info)
8661 {
8662         void *hdr;
8663         struct sk_buff *msg;
8664
8665         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8666         if (!msg)
8667                 return -ENOMEM;
8668
8669         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8670                              NL80211_CMD_GET_PROTOCOL_FEATURES);
8671         if (!hdr)
8672                 goto nla_put_failure;
8673
8674         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
8675                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
8676                 goto nla_put_failure;
8677
8678         genlmsg_end(msg, hdr);
8679         return genlmsg_reply(msg, info);
8680
8681  nla_put_failure:
8682         kfree_skb(msg);
8683         return -ENOBUFS;
8684 }
8685
8686 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
8687 {
8688         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8689         struct cfg80211_update_ft_ies_params ft_params;
8690         struct net_device *dev = info->user_ptr[1];
8691
8692         if (!rdev->ops->update_ft_ies)
8693                 return -EOPNOTSUPP;
8694
8695         if (!info->attrs[NL80211_ATTR_MDID] ||
8696             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
8697                 return -EINVAL;
8698
8699         memset(&ft_params, 0, sizeof(ft_params));
8700         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
8701         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
8702         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8703
8704         return rdev_update_ft_ies(rdev, dev, &ft_params);
8705 }
8706
8707 static int nl80211_crit_protocol_start(struct sk_buff *skb,
8708                                        struct genl_info *info)
8709 {
8710         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8711         struct wireless_dev *wdev = info->user_ptr[1];
8712         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
8713         u16 duration;
8714         int ret;
8715
8716         if (!rdev->ops->crit_proto_start)
8717                 return -EOPNOTSUPP;
8718
8719         if (WARN_ON(!rdev->ops->crit_proto_stop))
8720                 return -EINVAL;
8721
8722         if (rdev->crit_proto_nlportid)
8723                 return -EBUSY;
8724
8725         /* determine protocol if provided */
8726         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
8727                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
8728
8729         if (proto >= NUM_NL80211_CRIT_PROTO)
8730                 return -EINVAL;
8731
8732         /* timeout must be provided */
8733         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
8734                 return -EINVAL;
8735
8736         duration =
8737                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
8738
8739         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
8740                 return -ERANGE;
8741
8742         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
8743         if (!ret)
8744                 rdev->crit_proto_nlportid = info->snd_portid;
8745
8746         return ret;
8747 }
8748
8749 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
8750                                       struct genl_info *info)
8751 {
8752         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8753         struct wireless_dev *wdev = info->user_ptr[1];
8754
8755         if (!rdev->ops->crit_proto_stop)
8756                 return -EOPNOTSUPP;
8757
8758         if (rdev->crit_proto_nlportid) {
8759                 rdev->crit_proto_nlportid = 0;
8760                 rdev_crit_proto_stop(rdev, wdev);
8761         }
8762         return 0;
8763 }
8764
8765 #define NL80211_FLAG_NEED_WIPHY         0x01
8766 #define NL80211_FLAG_NEED_NETDEV        0x02
8767 #define NL80211_FLAG_NEED_RTNL          0x04
8768 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
8769 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
8770                                          NL80211_FLAG_CHECK_NETDEV_UP)
8771 #define NL80211_FLAG_NEED_WDEV          0x10
8772 /* If a netdev is associated, it must be UP, P2P must be started */
8773 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
8774                                          NL80211_FLAG_CHECK_NETDEV_UP)
8775
8776 static int nl80211_pre_doit(struct genl_ops *ops, struct sk_buff *skb,
8777                             struct genl_info *info)
8778 {
8779         struct cfg80211_registered_device *rdev;
8780         struct wireless_dev *wdev;
8781         struct net_device *dev;
8782         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
8783
8784         if (rtnl)
8785                 rtnl_lock();
8786
8787         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
8788                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
8789                 if (IS_ERR(rdev)) {
8790                         if (rtnl)
8791                                 rtnl_unlock();
8792                         return PTR_ERR(rdev);
8793                 }
8794                 info->user_ptr[0] = rdev;
8795         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
8796                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8797                 ASSERT_RTNL();
8798
8799                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
8800                                                   info->attrs);
8801                 if (IS_ERR(wdev)) {
8802                         if (rtnl)
8803                                 rtnl_unlock();
8804                         return PTR_ERR(wdev);
8805                 }
8806
8807                 dev = wdev->netdev;
8808                 rdev = wiphy_to_dev(wdev->wiphy);
8809
8810                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
8811                         if (!dev) {
8812                                 if (rtnl)
8813                                         rtnl_unlock();
8814                                 return -EINVAL;
8815                         }
8816
8817                         info->user_ptr[1] = dev;
8818                 } else {
8819                         info->user_ptr[1] = wdev;
8820                 }
8821
8822                 if (dev) {
8823                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
8824                             !netif_running(dev)) {
8825                                 if (rtnl)
8826                                         rtnl_unlock();
8827                                 return -ENETDOWN;
8828                         }
8829
8830                         dev_hold(dev);
8831                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
8832                         if (!wdev->p2p_started) {
8833                                 if (rtnl)
8834                                         rtnl_unlock();
8835                                 return -ENETDOWN;
8836                         }
8837                 }
8838
8839                 info->user_ptr[0] = rdev;
8840         }
8841
8842         return 0;
8843 }
8844
8845 static void nl80211_post_doit(struct genl_ops *ops, struct sk_buff *skb,
8846                               struct genl_info *info)
8847 {
8848         if (info->user_ptr[1]) {
8849                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
8850                         struct wireless_dev *wdev = info->user_ptr[1];
8851
8852                         if (wdev->netdev)
8853                                 dev_put(wdev->netdev);
8854                 } else {
8855                         dev_put(info->user_ptr[1]);
8856                 }
8857         }
8858         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
8859                 rtnl_unlock();
8860 }
8861
8862 static struct genl_ops nl80211_ops[] = {
8863         {
8864                 .cmd = NL80211_CMD_GET_WIPHY,
8865                 .doit = nl80211_get_wiphy,
8866                 .dumpit = nl80211_dump_wiphy,
8867                 .done = nl80211_dump_wiphy_done,
8868                 .policy = nl80211_policy,
8869                 /* can be retrieved by unprivileged users */
8870                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8871                                   NL80211_FLAG_NEED_RTNL,
8872         },
8873         {
8874                 .cmd = NL80211_CMD_SET_WIPHY,
8875                 .doit = nl80211_set_wiphy,
8876                 .policy = nl80211_policy,
8877                 .flags = GENL_ADMIN_PERM,
8878                 .internal_flags = NL80211_FLAG_NEED_RTNL,
8879         },
8880         {
8881                 .cmd = NL80211_CMD_GET_INTERFACE,
8882                 .doit = nl80211_get_interface,
8883                 .dumpit = nl80211_dump_interface,
8884                 .policy = nl80211_policy,
8885                 /* can be retrieved by unprivileged users */
8886                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8887                                   NL80211_FLAG_NEED_RTNL,
8888         },
8889         {
8890                 .cmd = NL80211_CMD_SET_INTERFACE,
8891                 .doit = nl80211_set_interface,
8892                 .policy = nl80211_policy,
8893                 .flags = GENL_ADMIN_PERM,
8894                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8895                                   NL80211_FLAG_NEED_RTNL,
8896         },
8897         {
8898                 .cmd = NL80211_CMD_NEW_INTERFACE,
8899                 .doit = nl80211_new_interface,
8900                 .policy = nl80211_policy,
8901                 .flags = GENL_ADMIN_PERM,
8902                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
8903                                   NL80211_FLAG_NEED_RTNL,
8904         },
8905         {
8906                 .cmd = NL80211_CMD_DEL_INTERFACE,
8907                 .doit = nl80211_del_interface,
8908                 .policy = nl80211_policy,
8909                 .flags = GENL_ADMIN_PERM,
8910                 .internal_flags = NL80211_FLAG_NEED_WDEV |
8911                                   NL80211_FLAG_NEED_RTNL,
8912         },
8913         {
8914                 .cmd = NL80211_CMD_GET_KEY,
8915                 .doit = nl80211_get_key,
8916                 .policy = nl80211_policy,
8917                 .flags = GENL_ADMIN_PERM,
8918                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8919                                   NL80211_FLAG_NEED_RTNL,
8920         },
8921         {
8922                 .cmd = NL80211_CMD_SET_KEY,
8923                 .doit = nl80211_set_key,
8924                 .policy = nl80211_policy,
8925                 .flags = GENL_ADMIN_PERM,
8926                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8927                                   NL80211_FLAG_NEED_RTNL,
8928         },
8929         {
8930                 .cmd = NL80211_CMD_NEW_KEY,
8931                 .doit = nl80211_new_key,
8932                 .policy = nl80211_policy,
8933                 .flags = GENL_ADMIN_PERM,
8934                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8935                                   NL80211_FLAG_NEED_RTNL,
8936         },
8937         {
8938                 .cmd = NL80211_CMD_DEL_KEY,
8939                 .doit = nl80211_del_key,
8940                 .policy = nl80211_policy,
8941                 .flags = GENL_ADMIN_PERM,
8942                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8943                                   NL80211_FLAG_NEED_RTNL,
8944         },
8945         {
8946                 .cmd = NL80211_CMD_SET_BEACON,
8947                 .policy = nl80211_policy,
8948                 .flags = GENL_ADMIN_PERM,
8949                 .doit = nl80211_set_beacon,
8950                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8951                                   NL80211_FLAG_NEED_RTNL,
8952         },
8953         {
8954                 .cmd = NL80211_CMD_START_AP,
8955                 .policy = nl80211_policy,
8956                 .flags = GENL_ADMIN_PERM,
8957                 .doit = nl80211_start_ap,
8958                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8959                                   NL80211_FLAG_NEED_RTNL,
8960         },
8961         {
8962                 .cmd = NL80211_CMD_STOP_AP,
8963                 .policy = nl80211_policy,
8964                 .flags = GENL_ADMIN_PERM,
8965                 .doit = nl80211_stop_ap,
8966                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
8967                                   NL80211_FLAG_NEED_RTNL,
8968         },
8969         {
8970                 .cmd = NL80211_CMD_GET_STATION,
8971                 .doit = nl80211_get_station,
8972                 .dumpit = nl80211_dump_station,
8973                 .policy = nl80211_policy,
8974                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
8975                                   NL80211_FLAG_NEED_RTNL,
8976         },
8977         {
8978                 .cmd = NL80211_CMD_SET_STATION,
8979                 .doit = nl80211_set_station,
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_NEW_STATION,
8987                 .doit = nl80211_new_station,
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_DEL_STATION,
8995                 .doit = nl80211_del_station,
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_GET_MPATH,
9003                 .doit = nl80211_get_mpath,
9004                 .dumpit = nl80211_dump_mpath,
9005                 .policy = nl80211_policy,
9006                 .flags = GENL_ADMIN_PERM,
9007                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9008                                   NL80211_FLAG_NEED_RTNL,
9009         },
9010         {
9011                 .cmd = NL80211_CMD_SET_MPATH,
9012                 .doit = nl80211_set_mpath,
9013                 .policy = nl80211_policy,
9014                 .flags = GENL_ADMIN_PERM,
9015                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9016                                   NL80211_FLAG_NEED_RTNL,
9017         },
9018         {
9019                 .cmd = NL80211_CMD_NEW_MPATH,
9020                 .doit = nl80211_new_mpath,
9021                 .policy = nl80211_policy,
9022                 .flags = GENL_ADMIN_PERM,
9023                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9024                                   NL80211_FLAG_NEED_RTNL,
9025         },
9026         {
9027                 .cmd = NL80211_CMD_DEL_MPATH,
9028                 .doit = nl80211_del_mpath,
9029                 .policy = nl80211_policy,
9030                 .flags = GENL_ADMIN_PERM,
9031                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9032                                   NL80211_FLAG_NEED_RTNL,
9033         },
9034         {
9035                 .cmd = NL80211_CMD_SET_BSS,
9036                 .doit = nl80211_set_bss,
9037                 .policy = nl80211_policy,
9038                 .flags = GENL_ADMIN_PERM,
9039                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9040                                   NL80211_FLAG_NEED_RTNL,
9041         },
9042         {
9043                 .cmd = NL80211_CMD_GET_REG,
9044                 .doit = nl80211_get_reg,
9045                 .policy = nl80211_policy,
9046                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9047                 /* can be retrieved by unprivileged users */
9048         },
9049         {
9050                 .cmd = NL80211_CMD_SET_REG,
9051                 .doit = nl80211_set_reg,
9052                 .policy = nl80211_policy,
9053                 .flags = GENL_ADMIN_PERM,
9054                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9055         },
9056         {
9057                 .cmd = NL80211_CMD_REQ_SET_REG,
9058                 .doit = nl80211_req_set_reg,
9059                 .policy = nl80211_policy,
9060                 .flags = GENL_ADMIN_PERM,
9061         },
9062         {
9063                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9064                 .doit = nl80211_get_mesh_config,
9065                 .policy = nl80211_policy,
9066                 /* can be retrieved by unprivileged users */
9067                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9068                                   NL80211_FLAG_NEED_RTNL,
9069         },
9070         {
9071                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9072                 .doit = nl80211_update_mesh_config,
9073                 .policy = nl80211_policy,
9074                 .flags = GENL_ADMIN_PERM,
9075                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9076                                   NL80211_FLAG_NEED_RTNL,
9077         },
9078         {
9079                 .cmd = NL80211_CMD_TRIGGER_SCAN,
9080                 .doit = nl80211_trigger_scan,
9081                 .policy = nl80211_policy,
9082                 .flags = GENL_ADMIN_PERM,
9083                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9084                                   NL80211_FLAG_NEED_RTNL,
9085         },
9086         {
9087                 .cmd = NL80211_CMD_GET_SCAN,
9088                 .policy = nl80211_policy,
9089                 .dumpit = nl80211_dump_scan,
9090         },
9091         {
9092                 .cmd = NL80211_CMD_START_SCHED_SCAN,
9093                 .doit = nl80211_start_sched_scan,
9094                 .policy = nl80211_policy,
9095                 .flags = GENL_ADMIN_PERM,
9096                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9097                                   NL80211_FLAG_NEED_RTNL,
9098         },
9099         {
9100                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9101                 .doit = nl80211_stop_sched_scan,
9102                 .policy = nl80211_policy,
9103                 .flags = GENL_ADMIN_PERM,
9104                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9105                                   NL80211_FLAG_NEED_RTNL,
9106         },
9107         {
9108                 .cmd = NL80211_CMD_AUTHENTICATE,
9109                 .doit = nl80211_authenticate,
9110                 .policy = nl80211_policy,
9111                 .flags = GENL_ADMIN_PERM,
9112                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9113                                   NL80211_FLAG_NEED_RTNL,
9114         },
9115         {
9116                 .cmd = NL80211_CMD_ASSOCIATE,
9117                 .doit = nl80211_associate,
9118                 .policy = nl80211_policy,
9119                 .flags = GENL_ADMIN_PERM,
9120                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9121                                   NL80211_FLAG_NEED_RTNL,
9122         },
9123         {
9124                 .cmd = NL80211_CMD_DEAUTHENTICATE,
9125                 .doit = nl80211_deauthenticate,
9126                 .policy = nl80211_policy,
9127                 .flags = GENL_ADMIN_PERM,
9128                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9129                                   NL80211_FLAG_NEED_RTNL,
9130         },
9131         {
9132                 .cmd = NL80211_CMD_DISASSOCIATE,
9133                 .doit = nl80211_disassociate,
9134                 .policy = nl80211_policy,
9135                 .flags = GENL_ADMIN_PERM,
9136                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9137                                   NL80211_FLAG_NEED_RTNL,
9138         },
9139         {
9140                 .cmd = NL80211_CMD_JOIN_IBSS,
9141                 .doit = nl80211_join_ibss,
9142                 .policy = nl80211_policy,
9143                 .flags = GENL_ADMIN_PERM,
9144                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9145                                   NL80211_FLAG_NEED_RTNL,
9146         },
9147         {
9148                 .cmd = NL80211_CMD_LEAVE_IBSS,
9149                 .doit = nl80211_leave_ibss,
9150                 .policy = nl80211_policy,
9151                 .flags = GENL_ADMIN_PERM,
9152                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9153                                   NL80211_FLAG_NEED_RTNL,
9154         },
9155 #ifdef CONFIG_NL80211_TESTMODE
9156         {
9157                 .cmd = NL80211_CMD_TESTMODE,
9158                 .doit = nl80211_testmode_do,
9159                 .dumpit = nl80211_testmode_dump,
9160                 .policy = nl80211_policy,
9161                 .flags = GENL_ADMIN_PERM,
9162                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9163                                   NL80211_FLAG_NEED_RTNL,
9164         },
9165 #endif
9166         {
9167                 .cmd = NL80211_CMD_CONNECT,
9168                 .doit = nl80211_connect,
9169                 .policy = nl80211_policy,
9170                 .flags = GENL_ADMIN_PERM,
9171                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9172                                   NL80211_FLAG_NEED_RTNL,
9173         },
9174         {
9175                 .cmd = NL80211_CMD_DISCONNECT,
9176                 .doit = nl80211_disconnect,
9177                 .policy = nl80211_policy,
9178                 .flags = GENL_ADMIN_PERM,
9179                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9180                                   NL80211_FLAG_NEED_RTNL,
9181         },
9182         {
9183                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
9184                 .doit = nl80211_wiphy_netns,
9185                 .policy = nl80211_policy,
9186                 .flags = GENL_ADMIN_PERM,
9187                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9188                                   NL80211_FLAG_NEED_RTNL,
9189         },
9190         {
9191                 .cmd = NL80211_CMD_GET_SURVEY,
9192                 .policy = nl80211_policy,
9193                 .dumpit = nl80211_dump_survey,
9194         },
9195         {
9196                 .cmd = NL80211_CMD_SET_PMKSA,
9197                 .doit = nl80211_setdel_pmksa,
9198                 .policy = nl80211_policy,
9199                 .flags = GENL_ADMIN_PERM,
9200                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9201                                   NL80211_FLAG_NEED_RTNL,
9202         },
9203         {
9204                 .cmd = NL80211_CMD_DEL_PMKSA,
9205                 .doit = nl80211_setdel_pmksa,
9206                 .policy = nl80211_policy,
9207                 .flags = GENL_ADMIN_PERM,
9208                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9209                                   NL80211_FLAG_NEED_RTNL,
9210         },
9211         {
9212                 .cmd = NL80211_CMD_FLUSH_PMKSA,
9213                 .doit = nl80211_flush_pmksa,
9214                 .policy = nl80211_policy,
9215                 .flags = GENL_ADMIN_PERM,
9216                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9217                                   NL80211_FLAG_NEED_RTNL,
9218         },
9219         {
9220                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
9221                 .doit = nl80211_remain_on_channel,
9222                 .policy = nl80211_policy,
9223                 .flags = GENL_ADMIN_PERM,
9224                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9225                                   NL80211_FLAG_NEED_RTNL,
9226         },
9227         {
9228                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
9229                 .doit = nl80211_cancel_remain_on_channel,
9230                 .policy = nl80211_policy,
9231                 .flags = GENL_ADMIN_PERM,
9232                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9233                                   NL80211_FLAG_NEED_RTNL,
9234         },
9235         {
9236                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
9237                 .doit = nl80211_set_tx_bitrate_mask,
9238                 .policy = nl80211_policy,
9239                 .flags = GENL_ADMIN_PERM,
9240                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9241                                   NL80211_FLAG_NEED_RTNL,
9242         },
9243         {
9244                 .cmd = NL80211_CMD_REGISTER_FRAME,
9245                 .doit = nl80211_register_mgmt,
9246                 .policy = nl80211_policy,
9247                 .flags = GENL_ADMIN_PERM,
9248                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9249                                   NL80211_FLAG_NEED_RTNL,
9250         },
9251         {
9252                 .cmd = NL80211_CMD_FRAME,
9253                 .doit = nl80211_tx_mgmt,
9254                 .policy = nl80211_policy,
9255                 .flags = GENL_ADMIN_PERM,
9256                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9257                                   NL80211_FLAG_NEED_RTNL,
9258         },
9259         {
9260                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
9261                 .doit = nl80211_tx_mgmt_cancel_wait,
9262                 .policy = nl80211_policy,
9263                 .flags = GENL_ADMIN_PERM,
9264                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9265                                   NL80211_FLAG_NEED_RTNL,
9266         },
9267         {
9268                 .cmd = NL80211_CMD_SET_POWER_SAVE,
9269                 .doit = nl80211_set_power_save,
9270                 .policy = nl80211_policy,
9271                 .flags = GENL_ADMIN_PERM,
9272                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9273                                   NL80211_FLAG_NEED_RTNL,
9274         },
9275         {
9276                 .cmd = NL80211_CMD_GET_POWER_SAVE,
9277                 .doit = nl80211_get_power_save,
9278                 .policy = nl80211_policy,
9279                 /* can be retrieved by unprivileged users */
9280                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9281                                   NL80211_FLAG_NEED_RTNL,
9282         },
9283         {
9284                 .cmd = NL80211_CMD_SET_CQM,
9285                 .doit = nl80211_set_cqm,
9286                 .policy = nl80211_policy,
9287                 .flags = GENL_ADMIN_PERM,
9288                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9289                                   NL80211_FLAG_NEED_RTNL,
9290         },
9291         {
9292                 .cmd = NL80211_CMD_SET_CHANNEL,
9293                 .doit = nl80211_set_channel,
9294                 .policy = nl80211_policy,
9295                 .flags = GENL_ADMIN_PERM,
9296                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9297                                   NL80211_FLAG_NEED_RTNL,
9298         },
9299         {
9300                 .cmd = NL80211_CMD_SET_WDS_PEER,
9301                 .doit = nl80211_set_wds_peer,
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_JOIN_MESH,
9309                 .doit = nl80211_join_mesh,
9310                 .policy = nl80211_policy,
9311                 .flags = GENL_ADMIN_PERM,
9312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9313                                   NL80211_FLAG_NEED_RTNL,
9314         },
9315         {
9316                 .cmd = NL80211_CMD_LEAVE_MESH,
9317                 .doit = nl80211_leave_mesh,
9318                 .policy = nl80211_policy,
9319                 .flags = GENL_ADMIN_PERM,
9320                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9321                                   NL80211_FLAG_NEED_RTNL,
9322         },
9323 #ifdef CONFIG_PM
9324         {
9325                 .cmd = NL80211_CMD_GET_WOWLAN,
9326                 .doit = nl80211_get_wowlan,
9327                 .policy = nl80211_policy,
9328                 /* can be retrieved by unprivileged users */
9329                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9330                                   NL80211_FLAG_NEED_RTNL,
9331         },
9332         {
9333                 .cmd = NL80211_CMD_SET_WOWLAN,
9334                 .doit = nl80211_set_wowlan,
9335                 .policy = nl80211_policy,
9336                 .flags = GENL_ADMIN_PERM,
9337                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9338                                   NL80211_FLAG_NEED_RTNL,
9339         },
9340 #endif
9341         {
9342                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
9343                 .doit = nl80211_set_rekey_data,
9344                 .policy = nl80211_policy,
9345                 .flags = GENL_ADMIN_PERM,
9346                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9347                                   NL80211_FLAG_NEED_RTNL,
9348         },
9349         {
9350                 .cmd = NL80211_CMD_TDLS_MGMT,
9351                 .doit = nl80211_tdls_mgmt,
9352                 .policy = nl80211_policy,
9353                 .flags = GENL_ADMIN_PERM,
9354                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9355                                   NL80211_FLAG_NEED_RTNL,
9356         },
9357         {
9358                 .cmd = NL80211_CMD_TDLS_OPER,
9359                 .doit = nl80211_tdls_oper,
9360                 .policy = nl80211_policy,
9361                 .flags = GENL_ADMIN_PERM,
9362                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9363                                   NL80211_FLAG_NEED_RTNL,
9364         },
9365         {
9366                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
9367                 .doit = nl80211_register_unexpected_frame,
9368                 .policy = nl80211_policy,
9369                 .flags = GENL_ADMIN_PERM,
9370                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9371                                   NL80211_FLAG_NEED_RTNL,
9372         },
9373         {
9374                 .cmd = NL80211_CMD_PROBE_CLIENT,
9375                 .doit = nl80211_probe_client,
9376                 .policy = nl80211_policy,
9377                 .flags = GENL_ADMIN_PERM,
9378                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9379                                   NL80211_FLAG_NEED_RTNL,
9380         },
9381         {
9382                 .cmd = NL80211_CMD_REGISTER_BEACONS,
9383                 .doit = nl80211_register_beacons,
9384                 .policy = nl80211_policy,
9385                 .flags = GENL_ADMIN_PERM,
9386                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9387                                   NL80211_FLAG_NEED_RTNL,
9388         },
9389         {
9390                 .cmd = NL80211_CMD_SET_NOACK_MAP,
9391                 .doit = nl80211_set_noack_map,
9392                 .policy = nl80211_policy,
9393                 .flags = GENL_ADMIN_PERM,
9394                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9395                                   NL80211_FLAG_NEED_RTNL,
9396         },
9397         {
9398                 .cmd = NL80211_CMD_START_P2P_DEVICE,
9399                 .doit = nl80211_start_p2p_device,
9400                 .policy = nl80211_policy,
9401                 .flags = GENL_ADMIN_PERM,
9402                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9403                                   NL80211_FLAG_NEED_RTNL,
9404         },
9405         {
9406                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
9407                 .doit = nl80211_stop_p2p_device,
9408                 .policy = nl80211_policy,
9409                 .flags = GENL_ADMIN_PERM,
9410                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9411                                   NL80211_FLAG_NEED_RTNL,
9412         },
9413         {
9414                 .cmd = NL80211_CMD_SET_MCAST_RATE,
9415                 .doit = nl80211_set_mcast_rate,
9416                 .policy = nl80211_policy,
9417                 .flags = GENL_ADMIN_PERM,
9418                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9419                                   NL80211_FLAG_NEED_RTNL,
9420         },
9421         {
9422                 .cmd = NL80211_CMD_SET_MAC_ACL,
9423                 .doit = nl80211_set_mac_acl,
9424                 .policy = nl80211_policy,
9425                 .flags = GENL_ADMIN_PERM,
9426                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9427                                   NL80211_FLAG_NEED_RTNL,
9428         },
9429         {
9430                 .cmd = NL80211_CMD_RADAR_DETECT,
9431                 .doit = nl80211_start_radar_detection,
9432                 .policy = nl80211_policy,
9433                 .flags = GENL_ADMIN_PERM,
9434                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9435                                   NL80211_FLAG_NEED_RTNL,
9436         },
9437         {
9438                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
9439                 .doit = nl80211_get_protocol_features,
9440                 .policy = nl80211_policy,
9441         },
9442         {
9443                 .cmd = NL80211_CMD_UPDATE_FT_IES,
9444                 .doit = nl80211_update_ft_ies,
9445                 .policy = nl80211_policy,
9446                 .flags = GENL_ADMIN_PERM,
9447                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9448                                   NL80211_FLAG_NEED_RTNL,
9449         },
9450         {
9451                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
9452                 .doit = nl80211_crit_protocol_start,
9453                 .policy = nl80211_policy,
9454                 .flags = GENL_ADMIN_PERM,
9455                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9456                                   NL80211_FLAG_NEED_RTNL,
9457         },
9458         {
9459                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
9460                 .doit = nl80211_crit_protocol_stop,
9461                 .policy = nl80211_policy,
9462                 .flags = GENL_ADMIN_PERM,
9463                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9464                                   NL80211_FLAG_NEED_RTNL,
9465         },
9466         {
9467                 .cmd = NL80211_CMD_GET_COALESCE,
9468                 .doit = nl80211_get_coalesce,
9469                 .policy = nl80211_policy,
9470                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9471                                   NL80211_FLAG_NEED_RTNL,
9472         },
9473         {
9474                 .cmd = NL80211_CMD_SET_COALESCE,
9475                 .doit = nl80211_set_coalesce,
9476                 .policy = nl80211_policy,
9477                 .flags = GENL_ADMIN_PERM,
9478                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9479                                   NL80211_FLAG_NEED_RTNL,
9480         },
9481         {
9482                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
9483                 .doit = nl80211_channel_switch,
9484                 .policy = nl80211_policy,
9485                 .flags = GENL_ADMIN_PERM,
9486                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9487                                   NL80211_FLAG_NEED_RTNL,
9488         },
9489 };
9490
9491 static struct genl_multicast_group nl80211_mlme_mcgrp = {
9492         .name = "mlme",
9493 };
9494
9495 /* multicast groups */
9496 static struct genl_multicast_group nl80211_config_mcgrp = {
9497         .name = "config",
9498 };
9499 static struct genl_multicast_group nl80211_scan_mcgrp = {
9500         .name = "scan",
9501 };
9502 static struct genl_multicast_group nl80211_regulatory_mcgrp = {
9503         .name = "regulatory",
9504 };
9505
9506 /* notification functions */
9507
9508 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev)
9509 {
9510         struct sk_buff *msg;
9511         struct nl80211_dump_wiphy_state state = {};
9512
9513         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9514         if (!msg)
9515                 return;
9516
9517         if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) {
9518                 nlmsg_free(msg);
9519                 return;
9520         }
9521
9522         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9523                                 nl80211_config_mcgrp.id, GFP_KERNEL);
9524 }
9525
9526 static int nl80211_add_scan_req(struct sk_buff *msg,
9527                                 struct cfg80211_registered_device *rdev)
9528 {
9529         struct cfg80211_scan_request *req = rdev->scan_req;
9530         struct nlattr *nest;
9531         int i;
9532
9533         if (WARN_ON(!req))
9534                 return 0;
9535
9536         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
9537         if (!nest)
9538                 goto nla_put_failure;
9539         for (i = 0; i < req->n_ssids; i++) {
9540                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
9541                         goto nla_put_failure;
9542         }
9543         nla_nest_end(msg, nest);
9544
9545         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
9546         if (!nest)
9547                 goto nla_put_failure;
9548         for (i = 0; i < req->n_channels; i++) {
9549                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
9550                         goto nla_put_failure;
9551         }
9552         nla_nest_end(msg, nest);
9553
9554         if (req->ie &&
9555             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
9556                 goto nla_put_failure;
9557
9558         if (req->flags)
9559                 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
9560
9561         return 0;
9562  nla_put_failure:
9563         return -ENOBUFS;
9564 }
9565
9566 static int nl80211_send_scan_msg(struct sk_buff *msg,
9567                                  struct cfg80211_registered_device *rdev,
9568                                  struct wireless_dev *wdev,
9569                                  u32 portid, u32 seq, int flags,
9570                                  u32 cmd)
9571 {
9572         void *hdr;
9573
9574         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9575         if (!hdr)
9576                 return -1;
9577
9578         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9579             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
9580                                          wdev->netdev->ifindex)) ||
9581             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
9582                 goto nla_put_failure;
9583
9584         /* ignore errors and send incomplete event anyway */
9585         nl80211_add_scan_req(msg, rdev);
9586
9587         return genlmsg_end(msg, hdr);
9588
9589  nla_put_failure:
9590         genlmsg_cancel(msg, hdr);
9591         return -EMSGSIZE;
9592 }
9593
9594 static int
9595 nl80211_send_sched_scan_msg(struct sk_buff *msg,
9596                             struct cfg80211_registered_device *rdev,
9597                             struct net_device *netdev,
9598                             u32 portid, u32 seq, int flags, u32 cmd)
9599 {
9600         void *hdr;
9601
9602         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
9603         if (!hdr)
9604                 return -1;
9605
9606         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9607             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
9608                 goto nla_put_failure;
9609
9610         return genlmsg_end(msg, hdr);
9611
9612  nla_put_failure:
9613         genlmsg_cancel(msg, hdr);
9614         return -EMSGSIZE;
9615 }
9616
9617 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
9618                              struct wireless_dev *wdev)
9619 {
9620         struct sk_buff *msg;
9621
9622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9623         if (!msg)
9624                 return;
9625
9626         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9627                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
9628                 nlmsg_free(msg);
9629                 return;
9630         }
9631
9632         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9633                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9634 }
9635
9636 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev,
9637                             struct wireless_dev *wdev)
9638 {
9639         struct sk_buff *msg;
9640
9641         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9642         if (!msg)
9643                 return;
9644
9645         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9646                                   NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
9647                 nlmsg_free(msg);
9648                 return;
9649         }
9650
9651         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9652                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9653 }
9654
9655 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev,
9656                                struct wireless_dev *wdev)
9657 {
9658         struct sk_buff *msg;
9659
9660         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9661         if (!msg)
9662                 return;
9663
9664         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
9665                                   NL80211_CMD_SCAN_ABORTED) < 0) {
9666                 nlmsg_free(msg);
9667                 return;
9668         }
9669
9670         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9671                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9672 }
9673
9674 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
9675                                      struct net_device *netdev)
9676 {
9677         struct sk_buff *msg;
9678
9679         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9680         if (!msg)
9681                 return;
9682
9683         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
9684                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
9685                 nlmsg_free(msg);
9686                 return;
9687         }
9688
9689         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9690                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9691 }
9692
9693 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
9694                              struct net_device *netdev, u32 cmd)
9695 {
9696         struct sk_buff *msg;
9697
9698         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9699         if (!msg)
9700                 return;
9701
9702         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
9703                 nlmsg_free(msg);
9704                 return;
9705         }
9706
9707         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9708                                 nl80211_scan_mcgrp.id, GFP_KERNEL);
9709 }
9710
9711 /*
9712  * This can happen on global regulatory changes or device specific settings
9713  * based on custom world regulatory domains.
9714  */
9715 void nl80211_send_reg_change_event(struct regulatory_request *request)
9716 {
9717         struct sk_buff *msg;
9718         void *hdr;
9719
9720         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9721         if (!msg)
9722                 return;
9723
9724         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
9725         if (!hdr) {
9726                 nlmsg_free(msg);
9727                 return;
9728         }
9729
9730         /* Userspace can always count this one always being set */
9731         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
9732                 goto nla_put_failure;
9733
9734         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
9735                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9736                                NL80211_REGDOM_TYPE_WORLD))
9737                         goto nla_put_failure;
9738         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
9739                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9740                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
9741                         goto nla_put_failure;
9742         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
9743                    request->intersect) {
9744                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9745                                NL80211_REGDOM_TYPE_INTERSECTION))
9746                         goto nla_put_failure;
9747         } else {
9748                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
9749                                NL80211_REGDOM_TYPE_COUNTRY) ||
9750                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
9751                                    request->alpha2))
9752                         goto nla_put_failure;
9753         }
9754
9755         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
9756             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
9757                 goto nla_put_failure;
9758
9759         genlmsg_end(msg, hdr);
9760
9761         rcu_read_lock();
9762         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
9763                                 GFP_ATOMIC);
9764         rcu_read_unlock();
9765
9766         return;
9767
9768 nla_put_failure:
9769         genlmsg_cancel(msg, hdr);
9770         nlmsg_free(msg);
9771 }
9772
9773 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
9774                                     struct net_device *netdev,
9775                                     const u8 *buf, size_t len,
9776                                     enum nl80211_commands cmd, gfp_t gfp)
9777 {
9778         struct sk_buff *msg;
9779         void *hdr;
9780
9781         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9782         if (!msg)
9783                 return;
9784
9785         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9786         if (!hdr) {
9787                 nlmsg_free(msg);
9788                 return;
9789         }
9790
9791         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9792             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9793             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
9794                 goto nla_put_failure;
9795
9796         genlmsg_end(msg, hdr);
9797
9798         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9799                                 nl80211_mlme_mcgrp.id, gfp);
9800         return;
9801
9802  nla_put_failure:
9803         genlmsg_cancel(msg, hdr);
9804         nlmsg_free(msg);
9805 }
9806
9807 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
9808                           struct net_device *netdev, const u8 *buf,
9809                           size_t len, gfp_t gfp)
9810 {
9811         nl80211_send_mlme_event(rdev, netdev, buf, len,
9812                                 NL80211_CMD_AUTHENTICATE, gfp);
9813 }
9814
9815 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
9816                            struct net_device *netdev, const u8 *buf,
9817                            size_t len, gfp_t gfp)
9818 {
9819         nl80211_send_mlme_event(rdev, netdev, buf, len,
9820                                 NL80211_CMD_ASSOCIATE, gfp);
9821 }
9822
9823 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
9824                          struct net_device *netdev, const u8 *buf,
9825                          size_t len, gfp_t gfp)
9826 {
9827         nl80211_send_mlme_event(rdev, netdev, buf, len,
9828                                 NL80211_CMD_DEAUTHENTICATE, gfp);
9829 }
9830
9831 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
9832                            struct net_device *netdev, const u8 *buf,
9833                            size_t len, gfp_t gfp)
9834 {
9835         nl80211_send_mlme_event(rdev, netdev, buf, len,
9836                                 NL80211_CMD_DISASSOCIATE, gfp);
9837 }
9838
9839 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
9840                                   size_t len)
9841 {
9842         struct wireless_dev *wdev = dev->ieee80211_ptr;
9843         struct wiphy *wiphy = wdev->wiphy;
9844         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
9845         const struct ieee80211_mgmt *mgmt = (void *)buf;
9846         u32 cmd;
9847
9848         if (WARN_ON(len < 2))
9849                 return;
9850
9851         if (ieee80211_is_deauth(mgmt->frame_control))
9852                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
9853         else
9854                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
9855
9856         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
9857         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC);
9858 }
9859 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
9860
9861 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
9862                                       struct net_device *netdev, int cmd,
9863                                       const u8 *addr, gfp_t gfp)
9864 {
9865         struct sk_buff *msg;
9866         void *hdr;
9867
9868         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9869         if (!msg)
9870                 return;
9871
9872         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
9873         if (!hdr) {
9874                 nlmsg_free(msg);
9875                 return;
9876         }
9877
9878         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9879             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9880             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
9881             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
9882                 goto nla_put_failure;
9883
9884         genlmsg_end(msg, hdr);
9885
9886         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9887                                 nl80211_mlme_mcgrp.id, gfp);
9888         return;
9889
9890  nla_put_failure:
9891         genlmsg_cancel(msg, hdr);
9892         nlmsg_free(msg);
9893 }
9894
9895 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
9896                                struct net_device *netdev, const u8 *addr,
9897                                gfp_t gfp)
9898 {
9899         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
9900                                   addr, gfp);
9901 }
9902
9903 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
9904                                 struct net_device *netdev, const u8 *addr,
9905                                 gfp_t gfp)
9906 {
9907         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
9908                                   addr, gfp);
9909 }
9910
9911 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
9912                                  struct net_device *netdev, const u8 *bssid,
9913                                  const u8 *req_ie, size_t req_ie_len,
9914                                  const u8 *resp_ie, size_t resp_ie_len,
9915                                  u16 status, gfp_t gfp)
9916 {
9917         struct sk_buff *msg;
9918         void *hdr;
9919
9920         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9921         if (!msg)
9922                 return;
9923
9924         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
9925         if (!hdr) {
9926                 nlmsg_free(msg);
9927                 return;
9928         }
9929
9930         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9931             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9932             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
9933             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
9934             (req_ie &&
9935              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9936             (resp_ie &&
9937              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9938                 goto nla_put_failure;
9939
9940         genlmsg_end(msg, hdr);
9941
9942         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9943                                 nl80211_mlme_mcgrp.id, gfp);
9944         return;
9945
9946  nla_put_failure:
9947         genlmsg_cancel(msg, hdr);
9948         nlmsg_free(msg);
9949
9950 }
9951
9952 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
9953                          struct net_device *netdev, const u8 *bssid,
9954                          const u8 *req_ie, size_t req_ie_len,
9955                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
9956 {
9957         struct sk_buff *msg;
9958         void *hdr;
9959
9960         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
9961         if (!msg)
9962                 return;
9963
9964         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
9965         if (!hdr) {
9966                 nlmsg_free(msg);
9967                 return;
9968         }
9969
9970         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
9971             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
9972             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
9973             (req_ie &&
9974              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
9975             (resp_ie &&
9976              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
9977                 goto nla_put_failure;
9978
9979         genlmsg_end(msg, hdr);
9980
9981         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
9982                                 nl80211_mlme_mcgrp.id, gfp);
9983         return;
9984
9985  nla_put_failure:
9986         genlmsg_cancel(msg, hdr);
9987         nlmsg_free(msg);
9988
9989 }
9990
9991 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
9992                                struct net_device *netdev, u16 reason,
9993                                const u8 *ie, size_t ie_len, bool from_ap)
9994 {
9995         struct sk_buff *msg;
9996         void *hdr;
9997
9998         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9999         if (!msg)
10000                 return;
10001
10002         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10003         if (!hdr) {
10004                 nlmsg_free(msg);
10005                 return;
10006         }
10007
10008         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10009             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10010             (from_ap && reason &&
10011              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10012             (from_ap &&
10013              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10014             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10015                 goto nla_put_failure;
10016
10017         genlmsg_end(msg, hdr);
10018
10019         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10020                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
10021         return;
10022
10023  nla_put_failure:
10024         genlmsg_cancel(msg, hdr);
10025         nlmsg_free(msg);
10026
10027 }
10028
10029 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10030                              struct net_device *netdev, const u8 *bssid,
10031                              gfp_t gfp)
10032 {
10033         struct sk_buff *msg;
10034         void *hdr;
10035
10036         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10037         if (!msg)
10038                 return;
10039
10040         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10041         if (!hdr) {
10042                 nlmsg_free(msg);
10043                 return;
10044         }
10045
10046         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10047             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10048             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10049                 goto nla_put_failure;
10050
10051         genlmsg_end(msg, hdr);
10052
10053         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10054                                 nl80211_mlme_mcgrp.id, gfp);
10055         return;
10056
10057  nla_put_failure:
10058         genlmsg_cancel(msg, hdr);
10059         nlmsg_free(msg);
10060 }
10061
10062 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10063                                         const u8* ie, u8 ie_len, gfp_t gfp)
10064 {
10065         struct wireless_dev *wdev = dev->ieee80211_ptr;
10066         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10067         struct sk_buff *msg;
10068         void *hdr;
10069
10070         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10071                 return;
10072
10073         trace_cfg80211_notify_new_peer_candidate(dev, addr);
10074
10075         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10076         if (!msg)
10077                 return;
10078
10079         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
10080         if (!hdr) {
10081                 nlmsg_free(msg);
10082                 return;
10083         }
10084
10085         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10086             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10087             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10088             (ie_len && ie &&
10089              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
10090                 goto nla_put_failure;
10091
10092         genlmsg_end(msg, hdr);
10093
10094         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10095                                 nl80211_mlme_mcgrp.id, gfp);
10096         return;
10097
10098  nla_put_failure:
10099         genlmsg_cancel(msg, hdr);
10100         nlmsg_free(msg);
10101 }
10102 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
10103
10104 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
10105                                  struct net_device *netdev, const u8 *addr,
10106                                  enum nl80211_key_type key_type, int key_id,
10107                                  const u8 *tsc, gfp_t gfp)
10108 {
10109         struct sk_buff *msg;
10110         void *hdr;
10111
10112         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10113         if (!msg)
10114                 return;
10115
10116         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
10117         if (!hdr) {
10118                 nlmsg_free(msg);
10119                 return;
10120         }
10121
10122         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10123             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10124             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
10125             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
10126             (key_id != -1 &&
10127              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
10128             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
10129                 goto nla_put_failure;
10130
10131         genlmsg_end(msg, hdr);
10132
10133         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10134                                 nl80211_mlme_mcgrp.id, gfp);
10135         return;
10136
10137  nla_put_failure:
10138         genlmsg_cancel(msg, hdr);
10139         nlmsg_free(msg);
10140 }
10141
10142 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
10143                                     struct ieee80211_channel *channel_before,
10144                                     struct ieee80211_channel *channel_after)
10145 {
10146         struct sk_buff *msg;
10147         void *hdr;
10148         struct nlattr *nl_freq;
10149
10150         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
10151         if (!msg)
10152                 return;
10153
10154         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
10155         if (!hdr) {
10156                 nlmsg_free(msg);
10157                 return;
10158         }
10159
10160         /*
10161          * Since we are applying the beacon hint to a wiphy we know its
10162          * wiphy_idx is valid
10163          */
10164         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
10165                 goto nla_put_failure;
10166
10167         /* Before */
10168         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
10169         if (!nl_freq)
10170                 goto nla_put_failure;
10171         if (nl80211_msg_put_channel(msg, channel_before, false))
10172                 goto nla_put_failure;
10173         nla_nest_end(msg, nl_freq);
10174
10175         /* After */
10176         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
10177         if (!nl_freq)
10178                 goto nla_put_failure;
10179         if (nl80211_msg_put_channel(msg, channel_after, false))
10180                 goto nla_put_failure;
10181         nla_nest_end(msg, nl_freq);
10182
10183         genlmsg_end(msg, hdr);
10184
10185         rcu_read_lock();
10186         genlmsg_multicast_allns(msg, 0, nl80211_regulatory_mcgrp.id,
10187                                 GFP_ATOMIC);
10188         rcu_read_unlock();
10189
10190         return;
10191
10192 nla_put_failure:
10193         genlmsg_cancel(msg, hdr);
10194         nlmsg_free(msg);
10195 }
10196
10197 static void nl80211_send_remain_on_chan_event(
10198         int cmd, struct cfg80211_registered_device *rdev,
10199         struct wireless_dev *wdev, u64 cookie,
10200         struct ieee80211_channel *chan,
10201         unsigned int duration, gfp_t gfp)
10202 {
10203         struct sk_buff *msg;
10204         void *hdr;
10205
10206         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10207         if (!msg)
10208                 return;
10209
10210         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10211         if (!hdr) {
10212                 nlmsg_free(msg);
10213                 return;
10214         }
10215
10216         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10217             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10218                                          wdev->netdev->ifindex)) ||
10219             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10220             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
10221             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
10222                         NL80211_CHAN_NO_HT) ||
10223             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
10224                 goto nla_put_failure;
10225
10226         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
10227             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
10228                 goto nla_put_failure;
10229
10230         genlmsg_end(msg, hdr);
10231
10232         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10233                                 nl80211_mlme_mcgrp.id, gfp);
10234         return;
10235
10236  nla_put_failure:
10237         genlmsg_cancel(msg, hdr);
10238         nlmsg_free(msg);
10239 }
10240
10241 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
10242                                struct ieee80211_channel *chan,
10243                                unsigned int duration, gfp_t gfp)
10244 {
10245         struct wiphy *wiphy = wdev->wiphy;
10246         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10247
10248         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
10249         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
10250                                           rdev, wdev, cookie, chan,
10251                                           duration, gfp);
10252 }
10253 EXPORT_SYMBOL(cfg80211_ready_on_channel);
10254
10255 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
10256                                         struct ieee80211_channel *chan,
10257                                         gfp_t gfp)
10258 {
10259         struct wiphy *wiphy = wdev->wiphy;
10260         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10261
10262         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
10263         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10264                                           rdev, wdev, cookie, chan, 0, gfp);
10265 }
10266 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
10267
10268 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
10269                       struct station_info *sinfo, gfp_t gfp)
10270 {
10271         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10272         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10273         struct sk_buff *msg;
10274
10275         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
10276
10277         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10278         if (!msg)
10279                 return;
10280
10281         if (nl80211_send_station(msg, 0, 0, 0,
10282                                  rdev, dev, mac_addr, sinfo) < 0) {
10283                 nlmsg_free(msg);
10284                 return;
10285         }
10286
10287         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10288                                 nl80211_mlme_mcgrp.id, gfp);
10289 }
10290 EXPORT_SYMBOL(cfg80211_new_sta);
10291
10292 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
10293 {
10294         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10295         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10296         struct sk_buff *msg;
10297         void *hdr;
10298
10299         trace_cfg80211_del_sta(dev, mac_addr);
10300
10301         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10302         if (!msg)
10303                 return;
10304
10305         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
10306         if (!hdr) {
10307                 nlmsg_free(msg);
10308                 return;
10309         }
10310
10311         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10312             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
10313                 goto nla_put_failure;
10314
10315         genlmsg_end(msg, hdr);
10316
10317         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10318                                 nl80211_mlme_mcgrp.id, gfp);
10319         return;
10320
10321  nla_put_failure:
10322         genlmsg_cancel(msg, hdr);
10323         nlmsg_free(msg);
10324 }
10325 EXPORT_SYMBOL(cfg80211_del_sta);
10326
10327 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
10328                           enum nl80211_connect_failed_reason reason,
10329                           gfp_t gfp)
10330 {
10331         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
10332         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10333         struct sk_buff *msg;
10334         void *hdr;
10335
10336         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10337         if (!msg)
10338                 return;
10339
10340         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
10341         if (!hdr) {
10342                 nlmsg_free(msg);
10343                 return;
10344         }
10345
10346         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10347             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
10348             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
10349                 goto nla_put_failure;
10350
10351         genlmsg_end(msg, hdr);
10352
10353         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10354                                 nl80211_mlme_mcgrp.id, gfp);
10355         return;
10356
10357  nla_put_failure:
10358         genlmsg_cancel(msg, hdr);
10359         nlmsg_free(msg);
10360 }
10361 EXPORT_SYMBOL(cfg80211_conn_failed);
10362
10363 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
10364                                        const u8 *addr, gfp_t gfp)
10365 {
10366         struct wireless_dev *wdev = dev->ieee80211_ptr;
10367         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10368         struct sk_buff *msg;
10369         void *hdr;
10370         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
10371
10372         if (!nlportid)
10373                 return false;
10374
10375         msg = nlmsg_new(100, gfp);
10376         if (!msg)
10377                 return true;
10378
10379         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10380         if (!hdr) {
10381                 nlmsg_free(msg);
10382                 return true;
10383         }
10384
10385         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10386             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10387             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10388                 goto nla_put_failure;
10389
10390         genlmsg_end(msg, hdr);
10391         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10392         return true;
10393
10394  nla_put_failure:
10395         genlmsg_cancel(msg, hdr);
10396         nlmsg_free(msg);
10397         return true;
10398 }
10399
10400 bool cfg80211_rx_spurious_frame(struct net_device *dev,
10401                                 const u8 *addr, gfp_t gfp)
10402 {
10403         struct wireless_dev *wdev = dev->ieee80211_ptr;
10404         bool ret;
10405
10406         trace_cfg80211_rx_spurious_frame(dev, addr);
10407
10408         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10409                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
10410                 trace_cfg80211_return_bool(false);
10411                 return false;
10412         }
10413         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
10414                                          addr, gfp);
10415         trace_cfg80211_return_bool(ret);
10416         return ret;
10417 }
10418 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
10419
10420 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
10421                                         const u8 *addr, gfp_t gfp)
10422 {
10423         struct wireless_dev *wdev = dev->ieee80211_ptr;
10424         bool ret;
10425
10426         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
10427
10428         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10429                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
10430                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
10431                 trace_cfg80211_return_bool(false);
10432                 return false;
10433         }
10434         ret = __nl80211_unexpected_frame(dev,
10435                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
10436                                          addr, gfp);
10437         trace_cfg80211_return_bool(ret);
10438         return ret;
10439 }
10440 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
10441
10442 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
10443                       struct wireless_dev *wdev, u32 nlportid,
10444                       int freq, int sig_dbm,
10445                       const u8 *buf, size_t len, gfp_t gfp)
10446 {
10447         struct net_device *netdev = wdev->netdev;
10448         struct sk_buff *msg;
10449         void *hdr;
10450
10451         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10452         if (!msg)
10453                 return -ENOMEM;
10454
10455         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10456         if (!hdr) {
10457                 nlmsg_free(msg);
10458                 return -ENOMEM;
10459         }
10460
10461         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10462             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10463                                         netdev->ifindex)) ||
10464             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10465             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
10466             (sig_dbm &&
10467              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10468             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10469                 goto nla_put_failure;
10470
10471         genlmsg_end(msg, hdr);
10472
10473         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
10474
10475  nla_put_failure:
10476         genlmsg_cancel(msg, hdr);
10477         nlmsg_free(msg);
10478         return -ENOBUFS;
10479 }
10480
10481 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
10482                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
10483 {
10484         struct wiphy *wiphy = wdev->wiphy;
10485         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10486         struct net_device *netdev = wdev->netdev;
10487         struct sk_buff *msg;
10488         void *hdr;
10489
10490         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
10491
10492         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10493         if (!msg)
10494                 return;
10495
10496         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
10497         if (!hdr) {
10498                 nlmsg_free(msg);
10499                 return;
10500         }
10501
10502         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10503             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10504                                    netdev->ifindex)) ||
10505             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
10506             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
10507             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10508             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
10509                 goto nla_put_failure;
10510
10511         genlmsg_end(msg, hdr);
10512
10513         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10514                                 nl80211_mlme_mcgrp.id, gfp);
10515         return;
10516
10517  nla_put_failure:
10518         genlmsg_cancel(msg, hdr);
10519         nlmsg_free(msg);
10520 }
10521 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
10522
10523 void cfg80211_cqm_rssi_notify(struct net_device *dev,
10524                               enum nl80211_cqm_rssi_threshold_event rssi_event,
10525                               gfp_t gfp)
10526 {
10527         struct wireless_dev *wdev = dev->ieee80211_ptr;
10528         struct wiphy *wiphy = wdev->wiphy;
10529         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10530         struct sk_buff *msg;
10531         struct nlattr *pinfoattr;
10532         void *hdr;
10533
10534         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
10535
10536         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10537         if (!msg)
10538                 return;
10539
10540         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10541         if (!hdr) {
10542                 nlmsg_free(msg);
10543                 return;
10544         }
10545
10546         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10547             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
10548                 goto nla_put_failure;
10549
10550         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10551         if (!pinfoattr)
10552                 goto nla_put_failure;
10553
10554         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
10555                         rssi_event))
10556                 goto nla_put_failure;
10557
10558         nla_nest_end(msg, pinfoattr);
10559
10560         genlmsg_end(msg, hdr);
10561
10562         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10563                                 nl80211_mlme_mcgrp.id, gfp);
10564         return;
10565
10566  nla_put_failure:
10567         genlmsg_cancel(msg, hdr);
10568         nlmsg_free(msg);
10569 }
10570 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
10571
10572 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
10573                                      struct net_device *netdev, const u8 *bssid,
10574                                      const u8 *replay_ctr, gfp_t gfp)
10575 {
10576         struct sk_buff *msg;
10577         struct nlattr *rekey_attr;
10578         void *hdr;
10579
10580         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10581         if (!msg)
10582                 return;
10583
10584         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
10585         if (!hdr) {
10586                 nlmsg_free(msg);
10587                 return;
10588         }
10589
10590         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10591             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10592             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10593                 goto nla_put_failure;
10594
10595         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
10596         if (!rekey_attr)
10597                 goto nla_put_failure;
10598
10599         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
10600                     NL80211_REPLAY_CTR_LEN, replay_ctr))
10601                 goto nla_put_failure;
10602
10603         nla_nest_end(msg, rekey_attr);
10604
10605         genlmsg_end(msg, hdr);
10606
10607         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10608                                 nl80211_mlme_mcgrp.id, gfp);
10609         return;
10610
10611  nla_put_failure:
10612         genlmsg_cancel(msg, hdr);
10613         nlmsg_free(msg);
10614 }
10615
10616 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
10617                                const u8 *replay_ctr, gfp_t gfp)
10618 {
10619         struct wireless_dev *wdev = dev->ieee80211_ptr;
10620         struct wiphy *wiphy = wdev->wiphy;
10621         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10622
10623         trace_cfg80211_gtk_rekey_notify(dev, bssid);
10624         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
10625 }
10626 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
10627
10628 static void
10629 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
10630                                struct net_device *netdev, int index,
10631                                const u8 *bssid, bool preauth, gfp_t gfp)
10632 {
10633         struct sk_buff *msg;
10634         struct nlattr *attr;
10635         void *hdr;
10636
10637         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10638         if (!msg)
10639                 return;
10640
10641         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
10642         if (!hdr) {
10643                 nlmsg_free(msg);
10644                 return;
10645         }
10646
10647         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10648             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10649                 goto nla_put_failure;
10650
10651         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
10652         if (!attr)
10653                 goto nla_put_failure;
10654
10655         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
10656             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
10657             (preauth &&
10658              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
10659                 goto nla_put_failure;
10660
10661         nla_nest_end(msg, attr);
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
10674 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
10675                                      const u8 *bssid, bool preauth, gfp_t gfp)
10676 {
10677         struct wireless_dev *wdev = dev->ieee80211_ptr;
10678         struct wiphy *wiphy = wdev->wiphy;
10679         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10680
10681         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
10682         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
10683 }
10684 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
10685
10686 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
10687                                      struct net_device *netdev,
10688                                      struct cfg80211_chan_def *chandef,
10689                                      gfp_t gfp)
10690 {
10691         struct sk_buff *msg;
10692         void *hdr;
10693
10694         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10695         if (!msg)
10696                 return;
10697
10698         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
10699         if (!hdr) {
10700                 nlmsg_free(msg);
10701                 return;
10702         }
10703
10704         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10705                 goto nla_put_failure;
10706
10707         if (nl80211_send_chandef(msg, chandef))
10708                 goto nla_put_failure;
10709
10710         genlmsg_end(msg, hdr);
10711
10712         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10713                                 nl80211_mlme_mcgrp.id, gfp);
10714         return;
10715
10716  nla_put_failure:
10717         genlmsg_cancel(msg, hdr);
10718         nlmsg_free(msg);
10719 }
10720
10721 void cfg80211_ch_switch_notify(struct net_device *dev,
10722                                struct cfg80211_chan_def *chandef)
10723 {
10724         struct wireless_dev *wdev = dev->ieee80211_ptr;
10725         struct wiphy *wiphy = wdev->wiphy;
10726         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10727
10728         trace_cfg80211_ch_switch_notify(dev, chandef);
10729
10730         wdev_lock(wdev);
10731
10732         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
10733                     wdev->iftype != NL80211_IFTYPE_P2P_GO))
10734                 goto out;
10735
10736         wdev->channel = chandef->chan;
10737         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
10738 out:
10739         wdev_unlock(wdev);
10740         return;
10741 }
10742 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
10743
10744 void cfg80211_cqm_txe_notify(struct net_device *dev,
10745                              const u8 *peer, u32 num_packets,
10746                              u32 rate, u32 intvl, gfp_t gfp)
10747 {
10748         struct wireless_dev *wdev = dev->ieee80211_ptr;
10749         struct wiphy *wiphy = wdev->wiphy;
10750         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10751         struct sk_buff *msg;
10752         struct nlattr *pinfoattr;
10753         void *hdr;
10754
10755         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
10756         if (!msg)
10757                 return;
10758
10759         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10760         if (!hdr) {
10761                 nlmsg_free(msg);
10762                 return;
10763         }
10764
10765         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10766             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10767             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10768                 goto nla_put_failure;
10769
10770         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10771         if (!pinfoattr)
10772                 goto nla_put_failure;
10773
10774         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
10775                 goto nla_put_failure;
10776
10777         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
10778                 goto nla_put_failure;
10779
10780         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
10781                 goto nla_put_failure;
10782
10783         nla_nest_end(msg, pinfoattr);
10784
10785         genlmsg_end(msg, hdr);
10786
10787         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10788                                 nl80211_mlme_mcgrp.id, gfp);
10789         return;
10790
10791  nla_put_failure:
10792         genlmsg_cancel(msg, hdr);
10793         nlmsg_free(msg);
10794 }
10795 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
10796
10797 void
10798 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
10799                      struct cfg80211_chan_def *chandef,
10800                      enum nl80211_radar_event event,
10801                      struct net_device *netdev, gfp_t gfp)
10802 {
10803         struct sk_buff *msg;
10804         void *hdr;
10805
10806         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10807         if (!msg)
10808                 return;
10809
10810         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
10811         if (!hdr) {
10812                 nlmsg_free(msg);
10813                 return;
10814         }
10815
10816         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10817                 goto nla_put_failure;
10818
10819         /* NOP and radar events don't need a netdev parameter */
10820         if (netdev) {
10821                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
10822
10823                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10824                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10825                         goto nla_put_failure;
10826         }
10827
10828         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
10829                 goto nla_put_failure;
10830
10831         if (nl80211_send_chandef(msg, chandef))
10832                 goto nla_put_failure;
10833
10834         genlmsg_end(msg, hdr);
10835
10836         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10837                                 nl80211_mlme_mcgrp.id, gfp);
10838         return;
10839
10840  nla_put_failure:
10841         genlmsg_cancel(msg, hdr);
10842         nlmsg_free(msg);
10843 }
10844
10845 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
10846                                  const u8 *peer, u32 num_packets, gfp_t gfp)
10847 {
10848         struct wireless_dev *wdev = dev->ieee80211_ptr;
10849         struct wiphy *wiphy = wdev->wiphy;
10850         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10851         struct sk_buff *msg;
10852         struct nlattr *pinfoattr;
10853         void *hdr;
10854
10855         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
10856
10857         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10858         if (!msg)
10859                 return;
10860
10861         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
10862         if (!hdr) {
10863                 nlmsg_free(msg);
10864                 return;
10865         }
10866
10867         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10868             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10869             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
10870                 goto nla_put_failure;
10871
10872         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
10873         if (!pinfoattr)
10874                 goto nla_put_failure;
10875
10876         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
10877                 goto nla_put_failure;
10878
10879         nla_nest_end(msg, pinfoattr);
10880
10881         genlmsg_end(msg, hdr);
10882
10883         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10884                                 nl80211_mlme_mcgrp.id, gfp);
10885         return;
10886
10887  nla_put_failure:
10888         genlmsg_cancel(msg, hdr);
10889         nlmsg_free(msg);
10890 }
10891 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
10892
10893 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
10894                            u64 cookie, bool acked, gfp_t gfp)
10895 {
10896         struct wireless_dev *wdev = dev->ieee80211_ptr;
10897         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10898         struct sk_buff *msg;
10899         void *hdr;
10900
10901         trace_cfg80211_probe_status(dev, addr, cookie, acked);
10902
10903         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10904
10905         if (!msg)
10906                 return;
10907
10908         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
10909         if (!hdr) {
10910                 nlmsg_free(msg);
10911                 return;
10912         }
10913
10914         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10915             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
10916             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
10917             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
10918             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
10919                 goto nla_put_failure;
10920
10921         genlmsg_end(msg, hdr);
10922
10923         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
10924                                 nl80211_mlme_mcgrp.id, gfp);
10925         return;
10926
10927  nla_put_failure:
10928         genlmsg_cancel(msg, hdr);
10929         nlmsg_free(msg);
10930 }
10931 EXPORT_SYMBOL(cfg80211_probe_status);
10932
10933 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
10934                                  const u8 *frame, size_t len,
10935                                  int freq, int sig_dbm)
10936 {
10937         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
10938         struct sk_buff *msg;
10939         void *hdr;
10940         struct cfg80211_beacon_registration *reg;
10941
10942         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
10943
10944         spin_lock_bh(&rdev->beacon_registrations_lock);
10945         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
10946                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
10947                 if (!msg) {
10948                         spin_unlock_bh(&rdev->beacon_registrations_lock);
10949                         return;
10950                 }
10951
10952                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
10953                 if (!hdr)
10954                         goto nla_put_failure;
10955
10956                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10957                     (freq &&
10958                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
10959                     (sig_dbm &&
10960                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
10961                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
10962                         goto nla_put_failure;
10963
10964                 genlmsg_end(msg, hdr);
10965
10966                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
10967         }
10968         spin_unlock_bh(&rdev->beacon_registrations_lock);
10969         return;
10970
10971  nla_put_failure:
10972         spin_unlock_bh(&rdev->beacon_registrations_lock);
10973         if (hdr)
10974                 genlmsg_cancel(msg, hdr);
10975         nlmsg_free(msg);
10976 }
10977 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
10978
10979 #ifdef CONFIG_PM
10980 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
10981                                    struct cfg80211_wowlan_wakeup *wakeup,
10982                                    gfp_t gfp)
10983 {
10984         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
10985         struct sk_buff *msg;
10986         void *hdr;
10987         int size = 200;
10988
10989         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
10990
10991         if (wakeup)
10992                 size += wakeup->packet_present_len;
10993
10994         msg = nlmsg_new(size, gfp);
10995         if (!msg)
10996                 return;
10997
10998         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
10999         if (!hdr)
11000                 goto free_msg;
11001
11002         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11003             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11004                 goto free_msg;
11005
11006         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11007                                         wdev->netdev->ifindex))
11008                 goto free_msg;
11009
11010         if (wakeup) {
11011                 struct nlattr *reasons;
11012
11013                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11014
11015                 if (wakeup->disconnect &&
11016                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11017                         goto free_msg;
11018                 if (wakeup->magic_pkt &&
11019                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11020                         goto free_msg;
11021                 if (wakeup->gtk_rekey_failure &&
11022                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11023                         goto free_msg;
11024                 if (wakeup->eap_identity_req &&
11025                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11026                         goto free_msg;
11027                 if (wakeup->four_way_handshake &&
11028                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11029                         goto free_msg;
11030                 if (wakeup->rfkill_release &&
11031                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11032                         goto free_msg;
11033
11034                 if (wakeup->pattern_idx >= 0 &&
11035                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11036                                 wakeup->pattern_idx))
11037                         goto free_msg;
11038
11039                 if (wakeup->tcp_match)
11040                         nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH);
11041
11042                 if (wakeup->tcp_connlost)
11043                         nla_put_flag(msg,
11044                                      NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST);
11045
11046                 if (wakeup->tcp_nomoretokens)
11047                         nla_put_flag(msg,
11048                                 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS);
11049
11050                 if (wakeup->packet) {
11051                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11052                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11053
11054                         if (!wakeup->packet_80211) {
11055                                 pkt_attr =
11056                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11057                                 len_attr =
11058                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11059                         }
11060
11061                         if (wakeup->packet_len &&
11062                             nla_put_u32(msg, len_attr, wakeup->packet_len))
11063                                 goto free_msg;
11064
11065                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11066                                     wakeup->packet))
11067                                 goto free_msg;
11068                 }
11069
11070                 nla_nest_end(msg, reasons);
11071         }
11072
11073         genlmsg_end(msg, hdr);
11074
11075         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11076                                 nl80211_mlme_mcgrp.id, gfp);
11077         return;
11078
11079  free_msg:
11080         nlmsg_free(msg);
11081 }
11082 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
11083 #endif
11084
11085 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
11086                                 enum nl80211_tdls_operation oper,
11087                                 u16 reason_code, gfp_t gfp)
11088 {
11089         struct wireless_dev *wdev = dev->ieee80211_ptr;
11090         struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
11091         struct sk_buff *msg;
11092         void *hdr;
11093
11094         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
11095                                          reason_code);
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_TDLS_OPER);
11102         if (!hdr) {
11103                 nlmsg_free(msg);
11104                 return;
11105         }
11106
11107         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11108             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11109             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
11110             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
11111             (reason_code > 0 &&
11112              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
11113                 goto nla_put_failure;
11114
11115         genlmsg_end(msg, hdr);
11116
11117         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11118                                 nl80211_mlme_mcgrp.id, gfp);
11119         return;
11120
11121  nla_put_failure:
11122         genlmsg_cancel(msg, hdr);
11123         nlmsg_free(msg);
11124 }
11125 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
11126
11127 static int nl80211_netlink_notify(struct notifier_block * nb,
11128                                   unsigned long state,
11129                                   void *_notify)
11130 {
11131         struct netlink_notify *notify = _notify;
11132         struct cfg80211_registered_device *rdev;
11133         struct wireless_dev *wdev;
11134         struct cfg80211_beacon_registration *reg, *tmp;
11135
11136         if (state != NETLINK_URELEASE)
11137                 return NOTIFY_DONE;
11138
11139         rcu_read_lock();
11140
11141         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
11142                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list)
11143                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
11144
11145                 spin_lock_bh(&rdev->beacon_registrations_lock);
11146                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
11147                                          list) {
11148                         if (reg->nlportid == notify->portid) {
11149                                 list_del(&reg->list);
11150                                 kfree(reg);
11151                                 break;
11152                         }
11153                 }
11154                 spin_unlock_bh(&rdev->beacon_registrations_lock);
11155         }
11156
11157         rcu_read_unlock();
11158
11159         return NOTIFY_DONE;
11160 }
11161
11162 static struct notifier_block nl80211_netlink_notifier = {
11163         .notifier_call = nl80211_netlink_notify,
11164 };
11165
11166 void cfg80211_ft_event(struct net_device *netdev,
11167                        struct cfg80211_ft_event_params *ft_event)
11168 {
11169         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
11170         struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
11171         struct sk_buff *msg;
11172         void *hdr;
11173
11174         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
11175
11176         if (!ft_event->target_ap)
11177                 return;
11178
11179         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11180         if (!msg)
11181                 return;
11182
11183         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
11184         if (!hdr) {
11185                 nlmsg_free(msg);
11186                 return;
11187         }
11188
11189         nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
11190         nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
11191         nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap);
11192         if (ft_event->ies)
11193                 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies);
11194         if (ft_event->ric_ies)
11195                 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
11196                         ft_event->ric_ies);
11197
11198         genlmsg_end(msg, hdr);
11199
11200         genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
11201                                 nl80211_mlme_mcgrp.id, GFP_KERNEL);
11202 }
11203 EXPORT_SYMBOL(cfg80211_ft_event);
11204
11205 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
11206 {
11207         struct cfg80211_registered_device *rdev;
11208         struct sk_buff *msg;
11209         void *hdr;
11210         u32 nlportid;
11211
11212         rdev = wiphy_to_dev(wdev->wiphy);
11213         if (!rdev->crit_proto_nlportid)
11214                 return;
11215
11216         nlportid = rdev->crit_proto_nlportid;
11217         rdev->crit_proto_nlportid = 0;
11218
11219         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11220         if (!msg)
11221                 return;
11222
11223         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
11224         if (!hdr)
11225                 goto nla_put_failure;
11226
11227         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11228             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11229                 goto nla_put_failure;
11230
11231         genlmsg_end(msg, hdr);
11232
11233         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11234         return;
11235
11236  nla_put_failure:
11237         if (hdr)
11238                 genlmsg_cancel(msg, hdr);
11239         nlmsg_free(msg);
11240
11241 }
11242 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
11243
11244 /* initialisation/exit functions */
11245
11246 int nl80211_init(void)
11247 {
11248         int err;
11249
11250         err = genl_register_family_with_ops(&nl80211_fam,
11251                 nl80211_ops, ARRAY_SIZE(nl80211_ops));
11252         if (err)
11253                 return err;
11254
11255         err = genl_register_mc_group(&nl80211_fam, &nl80211_config_mcgrp);
11256         if (err)
11257                 goto err_out;
11258
11259         err = genl_register_mc_group(&nl80211_fam, &nl80211_scan_mcgrp);
11260         if (err)
11261                 goto err_out;
11262
11263         err = genl_register_mc_group(&nl80211_fam, &nl80211_regulatory_mcgrp);
11264         if (err)
11265                 goto err_out;
11266
11267         err = genl_register_mc_group(&nl80211_fam, &nl80211_mlme_mcgrp);
11268         if (err)
11269                 goto err_out;
11270
11271 #ifdef CONFIG_NL80211_TESTMODE
11272         err = genl_register_mc_group(&nl80211_fam, &nl80211_testmode_mcgrp);
11273         if (err)
11274                 goto err_out;
11275 #endif
11276
11277         err = netlink_register_notifier(&nl80211_netlink_notifier);
11278         if (err)
11279                 goto err_out;
11280
11281         return 0;
11282  err_out:
11283         genl_unregister_family(&nl80211_fam);
11284         return err;
11285 }
11286
11287 void nl80211_exit(void)
11288 {
11289         netlink_unregister_notifier(&nl80211_netlink_notifier);
11290         genl_unregister_family(&nl80211_fam);
11291 }