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  * Copyright 2013-2014  Intel Mobile Communications GmbH
   6  */
   7
   8 #include <linux/if.h>
   9 #include <linux/module.h>
  10 #include <linux/err.h>
  11 #include <linux/slab.h>
  12 #include <linux/list.h>
  13 #include <linux/if_ether.h>
  14 #include <linux/ieee80211.h>
  15 #include <linux/nl80211.h>
  16 #include <linux/rtnetlink.h>
  17 #include <linux/netlink.h>
  18 #include <linux/etherdevice.h>
  19 #include <net/net_namespace.h>
  20 #include <net/genetlink.h>
  21 #include <net/cfg80211.h>
  22 #include <net/sock.h>
  23 #include <net/inet_connection_sock.h>
  24 #include "core.h"
  25 #include "nl80211.h"
  26 #include "reg.h"
  27 #include "rdev-ops.h"
  28
  29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  30                                    struct genl_info *info,
  31                                    struct cfg80211_crypto_settings *settings,
  32                                    int cipher_limit);
  33
  34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
  35                             struct genl_info *info);
  36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
  37                               struct genl_info *info);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam = {
  41         .id = GENL_ID_GENERATE,         /* don't bother with a hardcoded ID */
  42         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
  43         .hdrsize = 0,                   /* no private header */
  44         .version = 1,                   /* no particular meaning now */
  45         .maxattr = NL80211_ATTR_MAX,
  46         .netnsok = true,
  47         .pre_doit = nl80211_pre_doit,
  48         .post_doit = nl80211_post_doit,
  49 };
  50
  51 /* multicast groups */
  52 enum nl80211_multicast_groups {
  53         NL80211_MCGRP_CONFIG,
  54         NL80211_MCGRP_SCAN,
  55         NL80211_MCGRP_REGULATORY,
  56         NL80211_MCGRP_MLME,
  57         NL80211_MCGRP_VENDOR,
  58         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  59 };
  60
  61 static const struct genl_multicast_group nl80211_mcgrps[] = {
  62         [NL80211_MCGRP_CONFIG] = { .name = "config", },
  63         [NL80211_MCGRP_SCAN] = { .name = "scan", },
  64         [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", },
  65         [NL80211_MCGRP_MLME] = { .name = "mlme", },
  66         [NL80211_MCGRP_VENDOR] = { .name = "vendor", },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = "testmode", }
  69 #endif
  70 };
  71
  72 /* returns ERR_PTR values */
  73 static struct wireless_dev *
  74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  75 {
  76         struct cfg80211_registered_device *rdev;
  77         struct wireless_dev *result = NULL;
  78         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  79         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  80         u64 wdev_id;
  81         int wiphy_idx = -1;
  82         int ifidx = -1;
  83
  84         ASSERT_RTNL();
  85
  86         if (!have_ifidx && !have_wdev_id)
  87                 return ERR_PTR(-EINVAL);
  88
  89         if (have_ifidx)
  90                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  91         if (have_wdev_id) {
  92                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  93                 wiphy_idx = wdev_id >> 32;
  94         }
  95
  96         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  97                 struct wireless_dev *wdev;
  98
  99                 if (wiphy_net(&rdev->wiphy) != netns)
 100                         continue;
 101
 102                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 103                         continue;
 104
 105                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
 106                         if (have_ifidx && wdev->netdev &&
 107                             wdev->netdev->ifindex == ifidx) {
 108                                 result = wdev;
 109                                 break;
 110                         }
 111                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 112                                 result = wdev;
 113                                 break;
 114                         }
 115                 }
 116
 117                 if (result)
 118                         break;
 119         }
 120
 121         if (result)
 122                 return result;
 123         return ERR_PTR(-ENODEV);
 124 }
 125
 126 static struct cfg80211_registered_device *
 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 128 {
 129         struct cfg80211_registered_device *rdev = NULL, *tmp;
 130         struct net_device *netdev;
 131
 132         ASSERT_RTNL();
 133
 134         if (!attrs[NL80211_ATTR_WIPHY] &&
 135             !attrs[NL80211_ATTR_IFINDEX] &&
 136             !attrs[NL80211_ATTR_WDEV])
 137                 return ERR_PTR(-EINVAL);
 138
 139         if (attrs[NL80211_ATTR_WIPHY])
 140                 rdev = cfg80211_rdev_by_wiphy_idx(
 141                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 142
 143         if (attrs[NL80211_ATTR_WDEV]) {
 144                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 145                 struct wireless_dev *wdev;
 146                 bool found = false;
 147
 148                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 149                 if (tmp) {
 150                         /* make sure wdev exists */
 151                         list_for_each_entry(wdev, &tmp->wdev_list, list) {
 152                                 if (wdev->identifier != (u32)wdev_id)
 153                                         continue;
 154                                 found = true;
 155                                 break;
 156                         }
 157
 158                         if (!found)
 159                                 tmp = NULL;
 160
 161                         if (rdev && tmp != rdev)
 162                                 return ERR_PTR(-EINVAL);
 163                         rdev = tmp;
 164                 }
 165         }
 166
 167         if (attrs[NL80211_ATTR_IFINDEX]) {
 168                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 169                 netdev = __dev_get_by_index(netns, ifindex);
 170                 if (netdev) {
 171                         if (netdev->ieee80211_ptr)
 172                                 tmp = wiphy_to_rdev(
 173                                         netdev->ieee80211_ptr->wiphy);
 174                         else
 175                                 tmp = NULL;
 176
 177                         /* not wireless device -- return error */
 178                         if (!tmp)
 179                                 return ERR_PTR(-EINVAL);
 180
 181                         /* mismatch -- return error */
 182                         if (rdev && tmp != rdev)
 183                                 return ERR_PTR(-EINVAL);
 184
 185                         rdev = tmp;
 186                 }
 187         }
 188
 189         if (!rdev)
 190                 return ERR_PTR(-ENODEV);
 191
 192         if (netns != wiphy_net(&rdev->wiphy))
 193                 return ERR_PTR(-ENODEV);
 194
 195         return rdev;
 196 }
 197
 198 /*
 199  * This function returns a pointer to the driver
 200  * that the genl_info item that is passed refers to.
 201  *
 202  * The result of this can be a PTR_ERR and hence must
 203  * be checked with IS_ERR() for errors.
 204  */
 205 static struct cfg80211_registered_device *
 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 207 {
 208         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 209 }
 210
 211 /* policy for the attributes */
 212 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
 213         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 214         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 215                                       .len = 20-1 },
 216         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 217
 218         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 219         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 220         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 221         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 222         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 223
 224         [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 },
 225         [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
 226         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 227         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 228         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 229         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 230
 231         [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
 232         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 233         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 234
 235         [NL80211_ATTR_MAC] = { .len = ETH_ALEN },
 236         [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN },
 237
 238         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 239         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 240                                     .len = WLAN_MAX_KEY_LEN },
 241         [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 },
 242         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 243         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 244         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 245         [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 },
 246
 247         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 248         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 249         [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY,
 250                                        .len = IEEE80211_MAX_DATA_LEN },
 251         [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY,
 252                                        .len = IEEE80211_MAX_DATA_LEN },
 253         [NL80211_ATTR_STA_AID] = { .type = NLA_U16 },
 254         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 255         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 256         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 257                                                .len = NL80211_MAX_SUPP_RATES },
 258         [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 },
 259         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 260         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 261         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 262                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 263         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
 264
 265         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 266         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 267
 268         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 269         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 270         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 271         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 272                                            .len = NL80211_MAX_SUPP_RATES },
 273         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 274
 275         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 276         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 277
 278         [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN },
 279
 280         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 281         [NL80211_ATTR_IE] = { .type = NLA_BINARY,
 282                               .len = IEEE80211_MAX_DATA_LEN },
 283         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 284         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 285
 286         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 287                                 .len = IEEE80211_MAX_SSID_LEN },
 288         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 289         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 290         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 291         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 292         [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 },
 293         [NL80211_ATTR_STA_FLAGS2] = {
 294                 .len = sizeof(struct nl80211_sta_flag_update),
 295         },
 296         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 297         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 298         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 299         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 300         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 301         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 302         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 303         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 304         [NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
 305                                  .len = WLAN_PMKID_LEN },
 306         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 307         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 308         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 309         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 310                                  .len = IEEE80211_MAX_DATA_LEN },
 311         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 312         [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
 313         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 314         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 315         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 316         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 317         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 318         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 319         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 320         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 321         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 322         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 323         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 324         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 325         [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 },
 326         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 327         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 328         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 329         [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 },
 330         [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY,
 331                                          .len = IEEE80211_MAX_DATA_LEN },
 332         [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY,
 333                                          .len = IEEE80211_MAX_DATA_LEN },
 334         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 335         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 336         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 337         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 338         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 339         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 340         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 341         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 342         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 343         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 344         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 345                                       .len = IEEE80211_MAX_DATA_LEN },
 346         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 347         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 348         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 349                 .len = NL80211_HT_CAPABILITY_LEN
 350         },
 351         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 352         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 353         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 354         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 355         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 356         [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
 357         [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
 358         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 359         [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 },
 360         [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 },
 361         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 362         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 363         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 364         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 365         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 366         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 367         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 368                 .len = NL80211_VHT_CAPABILITY_LEN,
 369         },
 370         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 371         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 372                                   .len = IEEE80211_MAX_DATA_LEN },
 373         [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 },
 374         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 375         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 376         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 377         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 378         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 379         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 380         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 381         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 382         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 383         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 384         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 385         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 386         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 387                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 388         [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN },
 389         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 390         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 391         [NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
 392         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 393         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 394         [NL80211_ATTR_TSID] = { .type = NLA_U8 },
 395         [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 },
 396         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 397         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 398 };
 399
 400 /* policy for the key attributes */
 401 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 402         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 403         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 404         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 405         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 406         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 407         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 408         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 409         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 410 };
 411
 412 /* policy for the key default flags */
 413 static const struct nla_policy
 414 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 415         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 416         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 417 };
 418
 419 /* policy for WoWLAN attributes */
 420 static const struct nla_policy
 421 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 422         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 423         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 424         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 425         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 426         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 427         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 428         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 431 };
 432
 433 static const struct nla_policy
 434 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 435         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 436         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 437         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 438         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 439         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 440         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 441         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 442                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 443         },
 444         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 445                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 446         },
 447         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 448         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 449         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 450 };
 451
 452 /* policy for coalesce rule attributes */
 453 static const struct nla_policy
 454 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 455         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 456         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 457         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 458 };
 459
 460 /* policy for GTK rekey offload attributes */
 461 static const struct nla_policy
 462 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 463         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 464         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 465         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 466 };
 467
 468 static const struct nla_policy
 469 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 470         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 471                                                  .len = IEEE80211_MAX_SSID_LEN },
 472         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 473 };
 474
 475 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 476                                      struct netlink_callback *cb,
 477                                      struct cfg80211_registered_device **rdev,
 478                                      struct wireless_dev **wdev)
 479 {
 480         int err;
 481
 482         rtnl_lock();
 483
 484         if (!cb->args[0]) {
 485                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 486                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 487                                   nl80211_policy);
 488                 if (err)
 489                         goto out_unlock;
 490
 491                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 492                                                    nl80211_fam.attrbuf);
 493                 if (IS_ERR(*wdev)) {
 494                         err = PTR_ERR(*wdev);
 495                         goto out_unlock;
 496                 }
 497                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 498                 /* 0 is the first index - add 1 to parse only once */
 499                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 500                 cb->args[1] = (*wdev)->identifier;
 501         } else {
 502                 /* subtract the 1 again here */
 503                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 504                 struct wireless_dev *tmp;
 505
 506                 if (!wiphy) {
 507                         err = -ENODEV;
 508                         goto out_unlock;
 509                 }
 510                 *rdev = wiphy_to_rdev(wiphy);
 511                 *wdev = NULL;
 512
 513                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 514                         if (tmp->identifier == cb->args[1]) {
 515                                 *wdev = tmp;
 516                                 break;
 517                         }
 518                 }
 519
 520                 if (!*wdev) {
 521                         err = -ENODEV;
 522                         goto out_unlock;
 523                 }
 524         }
 525
 526         return 0;
 527  out_unlock:
 528         rtnl_unlock();
 529         return err;
 530 }
 531
 532 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 533 {
 534         rtnl_unlock();
 535 }
 536
 537 /* IE validation */
 538 static bool is_valid_ie_attr(const struct nlattr *attr)
 539 {
 540         const u8 *pos;
 541         int len;
 542
 543         if (!attr)
 544                 return true;
 545
 546         pos = nla_data(attr);
 547         len = nla_len(attr);
 548
 549         while (len) {
 550                 u8 elemlen;
 551
 552                 if (len < 2)
 553                         return false;
 554                 len -= 2;
 555
 556                 elemlen = pos[1];
 557                 if (elemlen > len)
 558                         return false;
 559
 560                 len -= elemlen;
 561                 pos += 2 + elemlen;
 562         }
 563
 564         return true;
 565 }
 566
 567 /* message building helper */
 568 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 569                                    int flags, u8 cmd)
 570 {
 571         /* since there is no private header just add the generic one */
 572         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 573 }
 574
 575 static int nl80211_msg_put_channel(struct sk_buff *msg,
 576                                    struct ieee80211_channel *chan,
 577                                    bool large)
 578 {
 579         /* Some channels must be completely excluded from the
 580          * list to protect old user-space tools from breaking
 581          */
 582         if (!large && chan->flags &
 583             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 584                 return 0;
 585
 586         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 587                         chan->center_freq))
 588                 goto nla_put_failure;
 589
 590         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 591             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 592                 goto nla_put_failure;
 593         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 594                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 595                         goto nla_put_failure;
 596                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 597                         goto nla_put_failure;
 598         }
 599         if (chan->flags & IEEE80211_CHAN_RADAR) {
 600                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 601                         goto nla_put_failure;
 602                 if (large) {
 603                         u32 time;
 604
 605                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 606
 607                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 608                                         chan->dfs_state))
 609                                 goto nla_put_failure;
 610                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 611                                         time))
 612                                 goto nla_put_failure;
 613                         if (nla_put_u32(msg,
 614                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 615                                         chan->dfs_cac_ms))
 616                                 goto nla_put_failure;
 617                 }
 618         }
 619
 620         if (large) {
 621                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 622                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 623                         goto nla_put_failure;
 624                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 625                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 626                         goto nla_put_failure;
 627                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 644                         goto nla_put_failure;
 645         }
 646
 647         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 648                         DBM_TO_MBM(chan->max_power)))
 649                 goto nla_put_failure;
 650
 651         return 0;
 652
 653  nla_put_failure:
 654         return -ENOBUFS;
 655 }
 656
 657 /* netlink command implementations */
 658
 659 struct key_parse {
 660         struct key_params p;
 661         int idx;
 662         int type;
 663         bool def, defmgmt;
 664         bool def_uni, def_multi;
 665 };
 666
 667 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 668 {
 669         struct nlattr *tb[NL80211_KEY_MAX + 1];
 670         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 671                                    nl80211_key_policy);
 672         if (err)
 673                 return err;
 674
 675         k->def = !!tb[NL80211_KEY_DEFAULT];
 676         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 677
 678         if (k->def) {
 679                 k->def_uni = true;
 680                 k->def_multi = true;
 681         }
 682         if (k->defmgmt)
 683                 k->def_multi = true;
 684
 685         if (tb[NL80211_KEY_IDX])
 686                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 687
 688         if (tb[NL80211_KEY_DATA]) {
 689                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 690                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 691         }
 692
 693         if (tb[NL80211_KEY_SEQ]) {
 694                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 695                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 696         }
 697
 698         if (tb[NL80211_KEY_CIPHER])
 699                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 700
 701         if (tb[NL80211_KEY_TYPE]) {
 702                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 703                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 704                         return -EINVAL;
 705         }
 706
 707         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 708                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 709                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 710                                        tb[NL80211_KEY_DEFAULT_TYPES],
 711                                        nl80211_key_default_policy);
 712                 if (err)
 713                         return err;
 714
 715                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 716                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 717         }
 718
 719         return 0;
 720 }
 721
 722 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 723 {
 724         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 725                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 726                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 727         }
 728
 729         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 730                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 731                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 732         }
 733
 734         if (info->attrs[NL80211_ATTR_KEY_IDX])
 735                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 736
 737         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 738                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 739
 740         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 741         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 742
 743         if (k->def) {
 744                 k->def_uni = true;
 745                 k->def_multi = true;
 746         }
 747         if (k->defmgmt)
 748                 k->def_multi = true;
 749
 750         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 751                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 752                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 753                         return -EINVAL;
 754         }
 755
 756         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 757                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 758                 int err = nla_parse_nested(
 759                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 760                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 761                                 nl80211_key_default_policy);
 762                 if (err)
 763                         return err;
 764
 765                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 766                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 767         }
 768
 769         return 0;
 770 }
 771
 772 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 773 {
 774         int err;
 775
 776         memset(k, 0, sizeof(*k));
 777         k->idx = -1;
 778         k->type = -1;
 779
 780         if (info->attrs[NL80211_ATTR_KEY])
 781                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 782         else
 783                 err = nl80211_parse_key_old(info, k);
 784
 785         if (err)
 786                 return err;
 787
 788         if (k->def && k->defmgmt)
 789                 return -EINVAL;
 790
 791         if (k->defmgmt) {
 792                 if (k->def_uni || !k->def_multi)
 793                         return -EINVAL;
 794         }
 795
 796         if (k->idx != -1) {
 797                 if (k->defmgmt) {
 798                         if (k->idx < 4 || k->idx > 5)
 799                                 return -EINVAL;
 800                 } else if (k->def) {
 801                         if (k->idx < 0 || k->idx > 3)
 802                                 return -EINVAL;
 803                 } else {
 804                         if (k->idx < 0 || k->idx > 5)
 805                                 return -EINVAL;
 806                 }
 807         }
 808
 809         return 0;
 810 }
 811
 812 static struct cfg80211_cached_keys *
 813 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 814                        struct nlattr *keys, bool *no_ht)
 815 {
 816         struct key_parse parse;
 817         struct nlattr *key;
 818         struct cfg80211_cached_keys *result;
 819         int rem, err, def = 0;
 820
 821         result = kzalloc(sizeof(*result), GFP_KERNEL);
 822         if (!result)
 823                 return ERR_PTR(-ENOMEM);
 824
 825         result->def = -1;
 826         result->defmgmt = -1;
 827
 828         nla_for_each_nested(key, keys, rem) {
 829                 memset(&parse, 0, sizeof(parse));
 830                 parse.idx = -1;
 831
 832                 err = nl80211_parse_key_new(key, &parse);
 833                 if (err)
 834                         goto error;
 835                 err = -EINVAL;
 836                 if (!parse.p.key)
 837                         goto error;
 838                 if (parse.idx < 0 || parse.idx > 4)
 839                         goto error;
 840                 if (parse.def) {
 841                         if (def)
 842                                 goto error;
 843                         def = 1;
 844                         result->def = parse.idx;
 845                         if (!parse.def_uni || !parse.def_multi)
 846                                 goto error;
 847                 } else if (parse.defmgmt)
 848                         goto error;
 849                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 850                                                      parse.idx, false, NULL);
 851                 if (err)
 852                         goto error;
 853                 result->params[parse.idx].cipher = parse.p.cipher;
 854                 result->params[parse.idx].key_len = parse.p.key_len;
 855                 result->params[parse.idx].key = result->data[parse.idx];
 856                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 857
 858                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 859                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 860                         if (no_ht)
 861                                 *no_ht = true;
 862                 }
 863         }
 864
 865         return result;
 866  error:
 867         kfree(result);
 868         return ERR_PTR(err);
 869 }
 870
 871 static int nl80211_key_allowed(struct wireless_dev *wdev)
 872 {
 873         ASSERT_WDEV_LOCK(wdev);
 874
 875         switch (wdev->iftype) {
 876         case NL80211_IFTYPE_AP:
 877         case NL80211_IFTYPE_AP_VLAN:
 878         case NL80211_IFTYPE_P2P_GO:
 879         case NL80211_IFTYPE_MESH_POINT:
 880                 break;
 881         case NL80211_IFTYPE_ADHOC:
 882         case NL80211_IFTYPE_STATION:
 883         case NL80211_IFTYPE_P2P_CLIENT:
 884                 if (!wdev->current_bss)
 885                         return -ENOLINK;
 886                 break;
 887         case NL80211_IFTYPE_UNSPECIFIED:
 888         case NL80211_IFTYPE_MONITOR:
 889         case NL80211_IFTYPE_P2P_DEVICE:
 890         case NL80211_IFTYPE_WDS:
 891         case NUM_NL80211_IFTYPES:
 892                 return -EINVAL;
 893         }
 894
 895         return 0;
 896 }
 897
 898 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 899                                                         struct nlattr *tb)
 900 {
 901         struct ieee80211_channel *chan;
 902
 903         if (tb == NULL)
 904                 return NULL;
 905         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 906         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 907                 return NULL;
 908         return chan;
 909 }
 910
 911 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 912 {
 913         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 914         int i;
 915
 916         if (!nl_modes)
 917                 goto nla_put_failure;
 918
 919         i = 0;
 920         while (ifmodes) {
 921                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 922                         goto nla_put_failure;
 923                 ifmodes >>= 1;
 924                 i++;
 925         }
 926
 927         nla_nest_end(msg, nl_modes);
 928         return 0;
 929
 930 nla_put_failure:
 931         return -ENOBUFS;
 932 }
 933
 934 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 935                                           struct sk_buff *msg,
 936                                           bool large)
 937 {
 938         struct nlattr *nl_combis;
 939         int i, j;
 940
 941         nl_combis = nla_nest_start(msg,
 942                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 943         if (!nl_combis)
 944                 goto nla_put_failure;
 945
 946         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 947                 const struct ieee80211_iface_combination *c;
 948                 struct nlattr *nl_combi, *nl_limits;
 949
 950                 c = &wiphy->iface_combinations[i];
 951
 952                 nl_combi = nla_nest_start(msg, i + 1);
 953                 if (!nl_combi)
 954                         goto nla_put_failure;
 955
 956                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 957                 if (!nl_limits)
 958                         goto nla_put_failure;
 959
 960                 for (j = 0; j < c->n_limits; j++) {
 961                         struct nlattr *nl_limit;
 962
 963                         nl_limit = nla_nest_start(msg, j + 1);
 964                         if (!nl_limit)
 965                                 goto nla_put_failure;
 966                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 967                                         c->limits[j].max))
 968                                 goto nla_put_failure;
 969                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 970                                                 c->limits[j].types))
 971                                 goto nla_put_failure;
 972                         nla_nest_end(msg, nl_limit);
 973                 }
 974
 975                 nla_nest_end(msg, nl_limits);
 976
 977                 if (c->beacon_int_infra_match &&
 978                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 979                         goto nla_put_failure;
 980                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 981                                 c->num_different_channels) ||
 982                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 983                                 c->max_interfaces))
 984                         goto nla_put_failure;
 985                 if (large &&
 986                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 987                                 c->radar_detect_widths) ||
 988                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 989                                 c->radar_detect_regions)))
 990                         goto nla_put_failure;
 991
 992                 nla_nest_end(msg, nl_combi);
 993         }
 994
 995         nla_nest_end(msg, nl_combis);
 996
 997         return 0;
 998 nla_put_failure:
 999         return -ENOBUFS;
1000 }
1001
1002 #ifdef CONFIG_PM
1003 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1004                                         struct sk_buff *msg)
1005 {
1006         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1007         struct nlattr *nl_tcp;
1008
1009         if (!tcp)
1010                 return 0;
1011
1012         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1013         if (!nl_tcp)
1014                 return -ENOBUFS;
1015
1016         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1017                         tcp->data_payload_max))
1018                 return -ENOBUFS;
1019
1020         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1021                         tcp->data_payload_max))
1022                 return -ENOBUFS;
1023
1024         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1025                 return -ENOBUFS;
1026
1027         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1028                                 sizeof(*tcp->tok), tcp->tok))
1029                 return -ENOBUFS;
1030
1031         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1032                         tcp->data_interval_max))
1033                 return -ENOBUFS;
1034
1035         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1036                         tcp->wake_payload_max))
1037                 return -ENOBUFS;
1038
1039         nla_nest_end(msg, nl_tcp);
1040         return 0;
1041 }
1042
1043 static int nl80211_send_wowlan(struct sk_buff *msg,
1044                                struct cfg80211_registered_device *rdev,
1045                                bool large)
1046 {
1047         struct nlattr *nl_wowlan;
1048
1049         if (!rdev->wiphy.wowlan)
1050                 return 0;
1051
1052         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1053         if (!nl_wowlan)
1054                 return -ENOBUFS;
1055
1056         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1057              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1058             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1059              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1060             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1061              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1062             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1063              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1064             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1065              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1066             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1067              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1068             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1069              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1070             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1071              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1072                 return -ENOBUFS;
1073
1074         if (rdev->wiphy.wowlan->n_patterns) {
1075                 struct nl80211_pattern_support pat = {
1076                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1077                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1078                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1079                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1080                 };
1081
1082                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1083                             sizeof(pat), &pat))
1084                         return -ENOBUFS;
1085         }
1086
1087         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1088                 return -ENOBUFS;
1089
1090         nla_nest_end(msg, nl_wowlan);
1091
1092         return 0;
1093 }
1094 #endif
1095
1096 static int nl80211_send_coalesce(struct sk_buff *msg,
1097                                  struct cfg80211_registered_device *rdev)
1098 {
1099         struct nl80211_coalesce_rule_support rule;
1100
1101         if (!rdev->wiphy.coalesce)
1102                 return 0;
1103
1104         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1105         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1106         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1107         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1108         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1109         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1110
1111         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1112                 return -ENOBUFS;
1113
1114         return 0;
1115 }
1116
1117 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1118                                       struct ieee80211_supported_band *sband)
1119 {
1120         struct nlattr *nl_rates, *nl_rate;
1121         struct ieee80211_rate *rate;
1122         int i;
1123
1124         /* add HT info */
1125         if (sband->ht_cap.ht_supported &&
1126             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1127                      sizeof(sband->ht_cap.mcs),
1128                      &sband->ht_cap.mcs) ||
1129              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1130                          sband->ht_cap.cap) ||
1131              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1132                         sband->ht_cap.ampdu_factor) ||
1133              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1134                         sband->ht_cap.ampdu_density)))
1135                 return -ENOBUFS;
1136
1137         /* add VHT info */
1138         if (sband->vht_cap.vht_supported &&
1139             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1140                      sizeof(sband->vht_cap.vht_mcs),
1141                      &sband->vht_cap.vht_mcs) ||
1142              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1143                          sband->vht_cap.cap)))
1144                 return -ENOBUFS;
1145
1146         /* add bitrates */
1147         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1148         if (!nl_rates)
1149                 return -ENOBUFS;
1150
1151         for (i = 0; i < sband->n_bitrates; i++) {
1152                 nl_rate = nla_nest_start(msg, i);
1153                 if (!nl_rate)
1154                         return -ENOBUFS;
1155
1156                 rate = &sband->bitrates[i];
1157                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1158                                 rate->bitrate))
1159                         return -ENOBUFS;
1160                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1161                     nla_put_flag(msg,
1162                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1163                         return -ENOBUFS;
1164
1165                 nla_nest_end(msg, nl_rate);
1166         }
1167
1168         nla_nest_end(msg, nl_rates);
1169
1170         return 0;
1171 }
1172
1173 static int
1174 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1175                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1176 {
1177         u16 stypes;
1178         struct nlattr *nl_ftypes, *nl_ifs;
1179         enum nl80211_iftype ift;
1180         int i;
1181
1182         if (!mgmt_stypes)
1183                 return 0;
1184
1185         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1186         if (!nl_ifs)
1187                 return -ENOBUFS;
1188
1189         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1190                 nl_ftypes = nla_nest_start(msg, ift);
1191                 if (!nl_ftypes)
1192                         return -ENOBUFS;
1193                 i = 0;
1194                 stypes = mgmt_stypes[ift].tx;
1195                 while (stypes) {
1196                         if ((stypes & 1) &&
1197                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1198                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1199                                 return -ENOBUFS;
1200                         stypes >>= 1;
1201                         i++;
1202                 }
1203                 nla_nest_end(msg, nl_ftypes);
1204         }
1205
1206         nla_nest_end(msg, nl_ifs);
1207
1208         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1209         if (!nl_ifs)
1210                 return -ENOBUFS;
1211
1212         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1213                 nl_ftypes = nla_nest_start(msg, ift);
1214                 if (!nl_ftypes)
1215                         return -ENOBUFS;
1216                 i = 0;
1217                 stypes = mgmt_stypes[ift].rx;
1218                 while (stypes) {
1219                         if ((stypes & 1) &&
1220                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1221                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1222                                 return -ENOBUFS;
1223                         stypes >>= 1;
1224                         i++;
1225                 }
1226                 nla_nest_end(msg, nl_ftypes);
1227         }
1228         nla_nest_end(msg, nl_ifs);
1229
1230         return 0;
1231 }
1232
1233 struct nl80211_dump_wiphy_state {
1234         s64 filter_wiphy;
1235         long start;
1236         long split_start, band_start, chan_start;
1237         bool split;
1238 };
1239
1240 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1241                               enum nl80211_commands cmd,
1242                               struct sk_buff *msg, u32 portid, u32 seq,
1243                               int flags, struct nl80211_dump_wiphy_state *state)
1244 {
1245         void *hdr;
1246         struct nlattr *nl_bands, *nl_band;
1247         struct nlattr *nl_freqs, *nl_freq;
1248         struct nlattr *nl_cmds;
1249         enum ieee80211_band band;
1250         struct ieee80211_channel *chan;
1251         int i;
1252         const struct ieee80211_txrx_stypes *mgmt_stypes =
1253                                 rdev->wiphy.mgmt_stypes;
1254         u32 features;
1255
1256         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1257         if (!hdr)
1258                 return -ENOBUFS;
1259
1260         if (WARN_ON(!state))
1261                 return -EINVAL;
1262
1263         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1264             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1265                            wiphy_name(&rdev->wiphy)) ||
1266             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1267                         cfg80211_rdev_list_generation))
1268                 goto nla_put_failure;
1269
1270         if (cmd != NL80211_CMD_NEW_WIPHY)
1271                 goto finish;
1272
1273         switch (state->split_start) {
1274         case 0:
1275                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1276                                rdev->wiphy.retry_short) ||
1277                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1278                                rdev->wiphy.retry_long) ||
1279                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1280                                 rdev->wiphy.frag_threshold) ||
1281                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1282                                 rdev->wiphy.rts_threshold) ||
1283                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1284                                rdev->wiphy.coverage_class) ||
1285                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1286                                rdev->wiphy.max_scan_ssids) ||
1287                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1288                                rdev->wiphy.max_sched_scan_ssids) ||
1289                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1290                                 rdev->wiphy.max_scan_ie_len) ||
1291                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1292                                 rdev->wiphy.max_sched_scan_ie_len) ||
1293                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1294                                rdev->wiphy.max_match_sets))
1295                         goto nla_put_failure;
1296
1297                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1298                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1299                         goto nla_put_failure;
1300                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1301                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1302                         goto nla_put_failure;
1303                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1304                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1305                         goto nla_put_failure;
1306                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1307                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1308                         goto nla_put_failure;
1309                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1310                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1311                         goto nla_put_failure;
1312                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1313                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1314                         goto nla_put_failure;
1315                 state->split_start++;
1316                 if (state->split)
1317                         break;
1318         case 1:
1319                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1320                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1321                             rdev->wiphy.cipher_suites))
1322                         goto nla_put_failure;
1323
1324                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1325                                rdev->wiphy.max_num_pmkids))
1326                         goto nla_put_failure;
1327
1328                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1329                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1330                         goto nla_put_failure;
1331
1332                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1333                                 rdev->wiphy.available_antennas_tx) ||
1334                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1335                                 rdev->wiphy.available_antennas_rx))
1336                         goto nla_put_failure;
1337
1338                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1339                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1340                                 rdev->wiphy.probe_resp_offload))
1341                         goto nla_put_failure;
1342
1343                 if ((rdev->wiphy.available_antennas_tx ||
1344                      rdev->wiphy.available_antennas_rx) &&
1345                     rdev->ops->get_antenna) {
1346                         u32 tx_ant = 0, rx_ant = 0;
1347                         int res;
1348                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1349                         if (!res) {
1350                                 if (nla_put_u32(msg,
1351                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1352                                                 tx_ant) ||
1353                                     nla_put_u32(msg,
1354                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1355                                                 rx_ant))
1356                                         goto nla_put_failure;
1357                         }
1358                 }
1359
1360                 state->split_start++;
1361                 if (state->split)
1362                         break;
1363         case 2:
1364                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1365                                         rdev->wiphy.interface_modes))
1366                                 goto nla_put_failure;
1367                 state->split_start++;
1368                 if (state->split)
1369                         break;
1370         case 3:
1371                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1372                 if (!nl_bands)
1373                         goto nla_put_failure;
1374
1375                 for (band = state->band_start;
1376                      band < IEEE80211_NUM_BANDS; band++) {
1377                         struct ieee80211_supported_band *sband;
1378
1379                         sband = rdev->wiphy.bands[band];
1380
1381                         if (!sband)
1382                                 continue;
1383
1384                         nl_band = nla_nest_start(msg, band);
1385                         if (!nl_band)
1386                                 goto nla_put_failure;
1387
1388                         switch (state->chan_start) {
1389                         case 0:
1390                                 if (nl80211_send_band_rateinfo(msg, sband))
1391                                         goto nla_put_failure;
1392                                 state->chan_start++;
1393                                 if (state->split)
1394                                         break;
1395                         default:
1396                                 /* add frequencies */
1397                                 nl_freqs = nla_nest_start(
1398                                         msg, NL80211_BAND_ATTR_FREQS);
1399                                 if (!nl_freqs)
1400                                         goto nla_put_failure;
1401
1402                                 for (i = state->chan_start - 1;
1403                                      i < sband->n_channels;
1404                                      i++) {
1405                                         nl_freq = nla_nest_start(msg, i);
1406                                         if (!nl_freq)
1407                                                 goto nla_put_failure;
1408
1409                                         chan = &sband->channels[i];
1410
1411                                         if (nl80211_msg_put_channel(
1412                                                         msg, chan,
1413                                                         state->split))
1414                                                 goto nla_put_failure;
1415
1416                                         nla_nest_end(msg, nl_freq);
1417                                         if (state->split)
1418                                                 break;
1419                                 }
1420                                 if (i < sband->n_channels)
1421                                         state->chan_start = i + 2;
1422                                 else
1423                                         state->chan_start = 0;
1424                                 nla_nest_end(msg, nl_freqs);
1425                         }
1426
1427                         nla_nest_end(msg, nl_band);
1428
1429                         if (state->split) {
1430                                 /* start again here */
1431                                 if (state->chan_start)
1432                                         band--;
1433                                 break;
1434                         }
1435                 }
1436                 nla_nest_end(msg, nl_bands);
1437
1438                 if (band < IEEE80211_NUM_BANDS)
1439                         state->band_start = band + 1;
1440                 else
1441                         state->band_start = 0;
1442
1443                 /* if bands & channels are done, continue outside */
1444                 if (state->band_start == 0 && state->chan_start == 0)
1445                         state->split_start++;
1446                 if (state->split)
1447                         break;
1448         case 4:
1449                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1450                 if (!nl_cmds)
1451                         goto nla_put_failure;
1452
1453                 i = 0;
1454 #define CMD(op, n)                                                      \
1455                  do {                                                   \
1456                         if (rdev->ops->op) {                            \
1457                                 i++;                                    \
1458                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1459                                         goto nla_put_failure;           \
1460                         }                                               \
1461                 } while (0)
1462
1463                 CMD(add_virtual_intf, NEW_INTERFACE);
1464                 CMD(change_virtual_intf, SET_INTERFACE);
1465                 CMD(add_key, NEW_KEY);
1466                 CMD(start_ap, START_AP);
1467                 CMD(add_station, NEW_STATION);
1468                 CMD(add_mpath, NEW_MPATH);
1469                 CMD(update_mesh_config, SET_MESH_CONFIG);
1470                 CMD(change_bss, SET_BSS);
1471                 CMD(auth, AUTHENTICATE);
1472                 CMD(assoc, ASSOCIATE);
1473                 CMD(deauth, DEAUTHENTICATE);
1474                 CMD(disassoc, DISASSOCIATE);
1475                 CMD(join_ibss, JOIN_IBSS);
1476                 CMD(join_mesh, JOIN_MESH);
1477                 CMD(set_pmksa, SET_PMKSA);
1478                 CMD(del_pmksa, DEL_PMKSA);
1479                 CMD(flush_pmksa, FLUSH_PMKSA);
1480                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1481                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1482                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1483                 CMD(mgmt_tx, FRAME);
1484                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1485                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1486                         i++;
1487                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1488                                 goto nla_put_failure;
1489                 }
1490                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1491                     rdev->ops->join_mesh) {
1492                         i++;
1493                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1494                                 goto nla_put_failure;
1495                 }
1496                 CMD(set_wds_peer, SET_WDS_PEER);
1497                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1498                         CMD(tdls_mgmt, TDLS_MGMT);
1499                         CMD(tdls_oper, TDLS_OPER);
1500                 }
1501                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1502                         CMD(sched_scan_start, START_SCHED_SCAN);
1503                 CMD(probe_client, PROBE_CLIENT);
1504                 CMD(set_noack_map, SET_NOACK_MAP);
1505                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1506                         i++;
1507                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1508                                 goto nla_put_failure;
1509                 }
1510                 CMD(start_p2p_device, START_P2P_DEVICE);
1511                 CMD(set_mcast_rate, SET_MCAST_RATE);
1512 #ifdef CONFIG_NL80211_TESTMODE
1513                 CMD(testmode_cmd, TESTMODE);
1514 #endif
1515                 if (state->split) {
1516                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1517                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1518                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1519                                 CMD(channel_switch, CHANNEL_SWITCH);
1520                         CMD(set_qos_map, SET_QOS_MAP);
1521                         if (rdev->wiphy.features &
1522                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1523                                 CMD(add_tx_ts, ADD_TX_TS);
1524                 }
1525                 /* add into the if now */
1526 #undef CMD
1527
1528                 if (rdev->ops->connect || rdev->ops->auth) {
1529                         i++;
1530                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1531                                 goto nla_put_failure;
1532                 }
1533
1534                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1535                         i++;
1536                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1537                                 goto nla_put_failure;
1538                 }
1539
1540                 nla_nest_end(msg, nl_cmds);
1541                 state->split_start++;
1542                 if (state->split)
1543                         break;
1544         case 5:
1545                 if (rdev->ops->remain_on_channel &&
1546                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1547                     nla_put_u32(msg,
1548                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1549                                 rdev->wiphy.max_remain_on_channel_duration))
1550                         goto nla_put_failure;
1551
1552                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1553                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1554                         goto nla_put_failure;
1555
1556                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1557                         goto nla_put_failure;
1558                 state->split_start++;
1559                 if (state->split)
1560                         break;
1561         case 6:
1562 #ifdef CONFIG_PM
1563                 if (nl80211_send_wowlan(msg, rdev, state->split))
1564                         goto nla_put_failure;
1565                 state->split_start++;
1566                 if (state->split)
1567                         break;
1568 #else
1569                 state->split_start++;
1570 #endif
1571         case 7:
1572                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1573                                         rdev->wiphy.software_iftypes))
1574                         goto nla_put_failure;
1575
1576                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1577                                                    state->split))
1578                         goto nla_put_failure;
1579
1580                 state->split_start++;
1581                 if (state->split)
1582                         break;
1583         case 8:
1584                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1585                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1586                                 rdev->wiphy.ap_sme_capa))
1587                         goto nla_put_failure;
1588
1589                 features = rdev->wiphy.features;
1590                 /*
1591                  * We can only add the per-channel limit information if the
1592                  * dump is split, otherwise it makes it too big. Therefore
1593                  * only advertise it in that case.
1594                  */
1595                 if (state->split)
1596                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1597                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1598                         goto nla_put_failure;
1599
1600                 if (rdev->wiphy.ht_capa_mod_mask &&
1601                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1602                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1603                             rdev->wiphy.ht_capa_mod_mask))
1604                         goto nla_put_failure;
1605
1606                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1607                     rdev->wiphy.max_acl_mac_addrs &&
1608                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1609                                 rdev->wiphy.max_acl_mac_addrs))
1610                         goto nla_put_failure;
1611
1612                 /*
1613                  * Any information below this point is only available to
1614                  * applications that can deal with it being split. This
1615                  * helps ensure that newly added capabilities don't break
1616                  * older tools by overrunning their buffers.
1617                  *
1618                  * We still increment split_start so that in the split
1619                  * case we'll continue with more data in the next round,
1620                  * but break unconditionally so unsplit data stops here.
1621                  */
1622                 state->split_start++;
1623                 break;
1624         case 9:
1625                 if (rdev->wiphy.extended_capabilities &&
1626                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1627                              rdev->wiphy.extended_capabilities_len,
1628                              rdev->wiphy.extended_capabilities) ||
1629                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1630                              rdev->wiphy.extended_capabilities_len,
1631                              rdev->wiphy.extended_capabilities_mask)))
1632                         goto nla_put_failure;
1633
1634                 if (rdev->wiphy.vht_capa_mod_mask &&
1635                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1636                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1637                             rdev->wiphy.vht_capa_mod_mask))
1638                         goto nla_put_failure;
1639
1640                 state->split_start++;
1641                 break;
1642         case 10:
1643                 if (nl80211_send_coalesce(msg, rdev))
1644                         goto nla_put_failure;
1645
1646                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1647                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1648                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1649                         goto nla_put_failure;
1650
1651                 if (rdev->wiphy.max_ap_assoc_sta &&
1652                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1653                                 rdev->wiphy.max_ap_assoc_sta))
1654                         goto nla_put_failure;
1655
1656                 state->split_start++;
1657                 break;
1658         case 11:
1659                 if (rdev->wiphy.n_vendor_commands) {
1660                         const struct nl80211_vendor_cmd_info *info;
1661                         struct nlattr *nested;
1662
1663                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1664                         if (!nested)
1665                                 goto nla_put_failure;
1666
1667                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1668                                 info = &rdev->wiphy.vendor_commands[i].info;
1669                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1670                                         goto nla_put_failure;
1671                         }
1672                         nla_nest_end(msg, nested);
1673                 }
1674
1675                 if (rdev->wiphy.n_vendor_events) {
1676                         const struct nl80211_vendor_cmd_info *info;
1677                         struct nlattr *nested;
1678
1679                         nested = nla_nest_start(msg,
1680                                                 NL80211_ATTR_VENDOR_EVENTS);
1681                         if (!nested)
1682                                 goto nla_put_failure;
1683
1684                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1685                                 info = &rdev->wiphy.vendor_events[i];
1686                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1687                                         goto nla_put_failure;
1688                         }
1689                         nla_nest_end(msg, nested);
1690                 }
1691                 state->split_start++;
1692                 break;
1693         case 12:
1694                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1695                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1696                                rdev->wiphy.max_num_csa_counters))
1697                         goto nla_put_failure;
1698
1699                 /* done */
1700                 state->split_start = 0;
1701                 break;
1702         }
1703  finish:
1704         return genlmsg_end(msg, hdr);
1705
1706  nla_put_failure:
1707         genlmsg_cancel(msg, hdr);
1708         return -EMSGSIZE;
1709 }
1710
1711 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1712                                     struct netlink_callback *cb,
1713                                     struct nl80211_dump_wiphy_state *state)
1714 {
1715         struct nlattr **tb = nl80211_fam.attrbuf;
1716         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1717                               tb, nl80211_fam.maxattr, nl80211_policy);
1718         /* ignore parse errors for backward compatibility */
1719         if (ret)
1720                 return 0;
1721
1722         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1723         if (tb[NL80211_ATTR_WIPHY])
1724                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1725         if (tb[NL80211_ATTR_WDEV])
1726                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1727         if (tb[NL80211_ATTR_IFINDEX]) {
1728                 struct net_device *netdev;
1729                 struct cfg80211_registered_device *rdev;
1730                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1731
1732                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1733                 if (!netdev)
1734                         return -ENODEV;
1735                 if (netdev->ieee80211_ptr) {
1736                         rdev = wiphy_to_rdev(
1737                                 netdev->ieee80211_ptr->wiphy);
1738                         state->filter_wiphy = rdev->wiphy_idx;
1739                 }
1740         }
1741
1742         return 0;
1743 }
1744
1745 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1746 {
1747         int idx = 0, ret;
1748         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1749         struct cfg80211_registered_device *rdev;
1750
1751         rtnl_lock();
1752         if (!state) {
1753                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1754                 if (!state) {
1755                         rtnl_unlock();
1756                         return -ENOMEM;
1757                 }
1758                 state->filter_wiphy = -1;
1759                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1760                 if (ret) {
1761                         kfree(state);
1762                         rtnl_unlock();
1763                         return ret;
1764                 }
1765                 cb->args[0] = (long)state;
1766         }
1767
1768         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1769                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1770                         continue;
1771                 if (++idx <= state->start)
1772                         continue;
1773                 if (state->filter_wiphy != -1 &&
1774                     state->filter_wiphy != rdev->wiphy_idx)
1775                         continue;
1776                 /* attempt to fit multiple wiphy data chunks into the skb */
1777                 do {
1778                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1779                                                  skb,
1780                                                  NETLINK_CB(cb->skb).portid,
1781                                                  cb->nlh->nlmsg_seq,
1782                                                  NLM_F_MULTI, state);
1783                         if (ret < 0) {
1784                                 /*
1785                                  * If sending the wiphy data didn't fit (ENOBUFS
1786                                  * or EMSGSIZE returned), this SKB is still
1787                                  * empty (so it's not too big because another
1788                                  * wiphy dataset is already in the skb) and
1789                                  * we've not tried to adjust the dump allocation
1790                                  * yet ... then adjust the alloc size to be
1791                                  * bigger, and return 1 but with the empty skb.
1792                                  * This results in an empty message being RX'ed
1793                                  * in userspace, but that is ignored.
1794                                  *
1795                                  * We can then retry with the larger buffer.
1796                                  */
1797                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1798                                     !skb->len && !state->split &&
1799                                     cb->min_dump_alloc < 4096) {
1800                                         cb->min_dump_alloc = 4096;
1801                                         state->split_start = 0;
1802                                         rtnl_unlock();
1803                                         return 1;
1804                                 }
1805                                 idx--;
1806                                 break;
1807                         }
1808                 } while (state->split_start > 0);
1809                 break;
1810         }
1811         rtnl_unlock();
1812
1813         state->start = idx;
1814
1815         return skb->len;
1816 }
1817
1818 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1819 {
1820         kfree((void *)cb->args[0]);
1821         return 0;
1822 }
1823
1824 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1825 {
1826         struct sk_buff *msg;
1827         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1828         struct nl80211_dump_wiphy_state state = {};
1829
1830         msg = nlmsg_new(4096, GFP_KERNEL);
1831         if (!msg)
1832                 return -ENOMEM;
1833
1834         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1835                                info->snd_portid, info->snd_seq, 0,
1836                                &state) < 0) {
1837                 nlmsg_free(msg);
1838                 return -ENOBUFS;
1839         }
1840
1841         return genlmsg_reply(msg, info);
1842 }
1843
1844 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1845         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1846         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1847         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1848         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1849         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1850 };
1851
1852 static int parse_txq_params(struct nlattr *tb[],
1853                             struct ieee80211_txq_params *txq_params)
1854 {
1855         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1856             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1857             !tb[NL80211_TXQ_ATTR_AIFS])
1858                 return -EINVAL;
1859
1860         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1861         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1862         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1863         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1864         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1865
1866         if (txq_params->ac >= NL80211_NUM_ACS)
1867                 return -EINVAL;
1868
1869         return 0;
1870 }
1871
1872 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1873 {
1874         /*
1875          * You can only set the channel explicitly for WDS interfaces,
1876          * all others have their channel managed via their respective
1877          * "establish a connection" command (connect, join, ...)
1878          *
1879          * For AP/GO and mesh mode, the channel can be set with the
1880          * channel userspace API, but is only stored and passed to the
1881          * low-level driver when the AP starts or the mesh is joined.
1882          * This is for backward compatibility, userspace can also give
1883          * the channel in the start-ap or join-mesh commands instead.
1884          *
1885          * Monitors are special as they are normally slaved to
1886          * whatever else is going on, so they have their own special
1887          * operation to set the monitor channel if possible.
1888          */
1889         return !wdev ||
1890                 wdev->iftype == NL80211_IFTYPE_AP ||
1891                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1892                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1893                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1894 }
1895
1896 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1897                                  struct genl_info *info,
1898                                  struct cfg80211_chan_def *chandef)
1899 {
1900         u32 control_freq;
1901
1902         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1903                 return -EINVAL;
1904
1905         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1906
1907         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1908         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1909         chandef->center_freq1 = control_freq;
1910         chandef->center_freq2 = 0;
1911
1912         /* Primary channel not allowed */
1913         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1914                 return -EINVAL;
1915
1916         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1917                 enum nl80211_channel_type chantype;
1918
1919                 chantype = nla_get_u32(
1920                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1921
1922                 switch (chantype) {
1923                 case NL80211_CHAN_NO_HT:
1924                 case NL80211_CHAN_HT20:
1925                 case NL80211_CHAN_HT40PLUS:
1926                 case NL80211_CHAN_HT40MINUS:
1927                         cfg80211_chandef_create(chandef, chandef->chan,
1928                                                 chantype);
1929                         break;
1930                 default:
1931                         return -EINVAL;
1932                 }
1933         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1934                 chandef->width =
1935                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1936                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1937                         chandef->center_freq1 =
1938                                 nla_get_u32(
1939                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1940                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1941                         chandef->center_freq2 =
1942                                 nla_get_u32(
1943                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1944         }
1945
1946         if (!cfg80211_chandef_valid(chandef))
1947                 return -EINVAL;
1948
1949         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1950                                      IEEE80211_CHAN_DISABLED))
1951                 return -EINVAL;
1952
1953         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1954              chandef->width == NL80211_CHAN_WIDTH_10) &&
1955             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1956                 return -EINVAL;
1957
1958         return 0;
1959 }
1960
1961 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1962                                  struct net_device *dev,
1963                                  struct genl_info *info)
1964 {
1965         struct cfg80211_chan_def chandef;
1966         int result;
1967         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1968         struct wireless_dev *wdev = NULL;
1969
1970         if (dev)
1971                 wdev = dev->ieee80211_ptr;
1972         if (!nl80211_can_set_dev_channel(wdev))
1973                 return -EOPNOTSUPP;
1974         if (wdev)
1975                 iftype = wdev->iftype;
1976
1977         result = nl80211_parse_chandef(rdev, info, &chandef);
1978         if (result)
1979                 return result;
1980
1981         switch (iftype) {
1982         case NL80211_IFTYPE_AP:
1983         case NL80211_IFTYPE_P2P_GO:
1984                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
1985                         result = -EINVAL;
1986                         break;
1987                 }
1988                 if (wdev->beacon_interval) {
1989                         if (!dev || !rdev->ops->set_ap_chanwidth ||
1990                             !(rdev->wiphy.features &
1991                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
1992                                 result = -EBUSY;
1993                                 break;
1994                         }
1995
1996                         /* Only allow dynamic channel width changes */
1997                         if (chandef.chan != wdev->preset_chandef.chan) {
1998                                 result = -EBUSY;
1999                                 break;
2000                         }
2001                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2002                         if (result)
2003                                 break;
2004                 }
2005                 wdev->preset_chandef = chandef;
2006                 result = 0;
2007                 break;
2008         case NL80211_IFTYPE_MESH_POINT:
2009                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2010                 break;
2011         case NL80211_IFTYPE_MONITOR:
2012                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2013                 break;
2014         default:
2015                 result = -EINVAL;
2016         }
2017
2018         return result;
2019 }
2020
2021 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2022 {
2023         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2024         struct net_device *netdev = info->user_ptr[1];
2025
2026         return __nl80211_set_channel(rdev, netdev, info);
2027 }
2028
2029 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2030 {
2031         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2032         struct net_device *dev = info->user_ptr[1];
2033         struct wireless_dev *wdev = dev->ieee80211_ptr;
2034         const u8 *bssid;
2035
2036         if (!info->attrs[NL80211_ATTR_MAC])
2037                 return -EINVAL;
2038
2039         if (netif_running(dev))
2040                 return -EBUSY;
2041
2042         if (!rdev->ops->set_wds_peer)
2043                 return -EOPNOTSUPP;
2044
2045         if (wdev->iftype != NL80211_IFTYPE_WDS)
2046                 return -EOPNOTSUPP;
2047
2048         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2049         return rdev_set_wds_peer(rdev, dev, bssid);
2050 }
2051
2052
2053 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2054 {
2055         struct cfg80211_registered_device *rdev;
2056         struct net_device *netdev = NULL;
2057         struct wireless_dev *wdev;
2058         int result = 0, rem_txq_params = 0;
2059         struct nlattr *nl_txq_params;
2060         u32 changed;
2061         u8 retry_short = 0, retry_long = 0;
2062         u32 frag_threshold = 0, rts_threshold = 0;
2063         u8 coverage_class = 0;
2064
2065         ASSERT_RTNL();
2066
2067         /*
2068          * Try to find the wiphy and netdev. Normally this
2069          * function shouldn't need the netdev, but this is
2070          * done for backward compatibility -- previously
2071          * setting the channel was done per wiphy, but now
2072          * it is per netdev. Previous userland like hostapd
2073          * also passed a netdev to set_wiphy, so that it is
2074          * possible to let that go to the right netdev!
2075          */
2076
2077         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2078                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2079
2080                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2081                 if (netdev && netdev->ieee80211_ptr)
2082                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2083                 else
2084                         netdev = NULL;
2085         }
2086
2087         if (!netdev) {
2088                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2089                                                   info->attrs);
2090                 if (IS_ERR(rdev))
2091                         return PTR_ERR(rdev);
2092                 wdev = NULL;
2093                 netdev = NULL;
2094                 result = 0;
2095         } else
2096                 wdev = netdev->ieee80211_ptr;
2097
2098         /*
2099          * end workaround code, by now the rdev is available
2100          * and locked, and wdev may or may not be NULL.
2101          */
2102
2103         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2104                 result = cfg80211_dev_rename(
2105                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2106
2107         if (result)
2108                 return result;
2109
2110         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2111                 struct ieee80211_txq_params txq_params;
2112                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2113
2114                 if (!rdev->ops->set_txq_params)
2115                         return -EOPNOTSUPP;
2116
2117                 if (!netdev)
2118                         return -EINVAL;
2119
2120                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2121                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2122                         return -EINVAL;
2123
2124                 if (!netif_running(netdev))
2125                         return -ENETDOWN;
2126
2127                 nla_for_each_nested(nl_txq_params,
2128                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2129                                     rem_txq_params) {
2130                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2131                                            nla_data(nl_txq_params),
2132                                            nla_len(nl_txq_params),
2133                                            txq_params_policy);
2134                         if (result)
2135                                 return result;
2136                         result = parse_txq_params(tb, &txq_params);
2137                         if (result)
2138                                 return result;
2139
2140                         result = rdev_set_txq_params(rdev, netdev,
2141                                                      &txq_params);
2142                         if (result)
2143                                 return result;
2144                 }
2145         }
2146
2147         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2148                 result = __nl80211_set_channel(
2149                         rdev,
2150                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2151                         info);
2152                 if (result)
2153                         return result;
2154         }
2155
2156         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2157                 struct wireless_dev *txp_wdev = wdev;
2158                 enum nl80211_tx_power_setting type;
2159                 int idx, mbm = 0;
2160
2161                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2162                         txp_wdev = NULL;
2163
2164                 if (!rdev->ops->set_tx_power)
2165                         return -EOPNOTSUPP;
2166
2167                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2168                 type = nla_get_u32(info->attrs[idx]);
2169
2170                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2171                     (type != NL80211_TX_POWER_AUTOMATIC))
2172                         return -EINVAL;
2173
2174                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2175                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2176                         mbm = nla_get_u32(info->attrs[idx]);
2177                 }
2178
2179                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2180                 if (result)
2181                         return result;
2182         }
2183
2184         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2185             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2186                 u32 tx_ant, rx_ant;
2187                 if ((!rdev->wiphy.available_antennas_tx &&
2188                      !rdev->wiphy.available_antennas_rx) ||
2189                     !rdev->ops->set_antenna)
2190                         return -EOPNOTSUPP;
2191
2192                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2193                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2194
2195                 /* reject antenna configurations which don't match the
2196                  * available antenna masks, except for the "all" mask */
2197                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2198                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2199                         return -EINVAL;
2200
2201                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2202                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2203
2204                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2205                 if (result)
2206                         return result;
2207         }
2208
2209         changed = 0;
2210
2211         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2212                 retry_short = nla_get_u8(
2213                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2214                 if (retry_short == 0)
2215                         return -EINVAL;
2216
2217                 changed |= WIPHY_PARAM_RETRY_SHORT;
2218         }
2219
2220         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2221                 retry_long = nla_get_u8(
2222                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2223                 if (retry_long == 0)
2224                         return -EINVAL;
2225
2226                 changed |= WIPHY_PARAM_RETRY_LONG;
2227         }
2228
2229         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2230                 frag_threshold = nla_get_u32(
2231                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2232                 if (frag_threshold < 256)
2233                         return -EINVAL;
2234
2235                 if (frag_threshold != (u32) -1) {
2236                         /*
2237                          * Fragments (apart from the last one) are required to
2238                          * have even length. Make the fragmentation code
2239                          * simpler by stripping LSB should someone try to use
2240                          * odd threshold value.
2241                          */
2242                         frag_threshold &= ~0x1;
2243                 }
2244                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2245         }
2246
2247         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2248                 rts_threshold = nla_get_u32(
2249                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2250                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2251         }
2252
2253         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2254                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2255                         return -EINVAL;
2256
2257                 coverage_class = nla_get_u8(
2258                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2259                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2260         }
2261
2262         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2263                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2264                         return -EOPNOTSUPP;
2265
2266                 changed |= WIPHY_PARAM_DYN_ACK;
2267         }
2268
2269         if (changed) {
2270                 u8 old_retry_short, old_retry_long;
2271                 u32 old_frag_threshold, old_rts_threshold;
2272                 u8 old_coverage_class;
2273
2274                 if (!rdev->ops->set_wiphy_params)
2275                         return -EOPNOTSUPP;
2276
2277                 old_retry_short = rdev->wiphy.retry_short;
2278                 old_retry_long = rdev->wiphy.retry_long;
2279                 old_frag_threshold = rdev->wiphy.frag_threshold;
2280                 old_rts_threshold = rdev->wiphy.rts_threshold;
2281                 old_coverage_class = rdev->wiphy.coverage_class;
2282
2283                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2284                         rdev->wiphy.retry_short = retry_short;
2285                 if (changed & WIPHY_PARAM_RETRY_LONG)
2286                         rdev->wiphy.retry_long = retry_long;
2287                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2288                         rdev->wiphy.frag_threshold = frag_threshold;
2289                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2290                         rdev->wiphy.rts_threshold = rts_threshold;
2291                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2292                         rdev->wiphy.coverage_class = coverage_class;
2293
2294                 result = rdev_set_wiphy_params(rdev, changed);
2295                 if (result) {
2296                         rdev->wiphy.retry_short = old_retry_short;
2297                         rdev->wiphy.retry_long = old_retry_long;
2298                         rdev->wiphy.frag_threshold = old_frag_threshold;
2299                         rdev->wiphy.rts_threshold = old_rts_threshold;
2300                         rdev->wiphy.coverage_class = old_coverage_class;
2301                 }
2302         }
2303         return 0;
2304 }
2305
2306 static inline u64 wdev_id(struct wireless_dev *wdev)
2307 {
2308         return (u64)wdev->identifier |
2309                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2310 }
2311
2312 static int nl80211_send_chandef(struct sk_buff *msg,
2313                                 const struct cfg80211_chan_def *chandef)
2314 {
2315         WARN_ON(!cfg80211_chandef_valid(chandef));
2316
2317         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2318                         chandef->chan->center_freq))
2319                 return -ENOBUFS;
2320         switch (chandef->width) {
2321         case NL80211_CHAN_WIDTH_20_NOHT:
2322         case NL80211_CHAN_WIDTH_20:
2323         case NL80211_CHAN_WIDTH_40:
2324                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2325                                 cfg80211_get_chandef_type(chandef)))
2326                         return -ENOBUFS;
2327                 break;
2328         default:
2329                 break;
2330         }
2331         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2332                 return -ENOBUFS;
2333         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2334                 return -ENOBUFS;
2335         if (chandef->center_freq2 &&
2336             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2337                 return -ENOBUFS;
2338         return 0;
2339 }
2340
2341 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2342                               struct cfg80211_registered_device *rdev,
2343                               struct wireless_dev *wdev)
2344 {
2345         struct net_device *dev = wdev->netdev;
2346         void *hdr;
2347
2348         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE);
2349         if (!hdr)
2350                 return -1;
2351
2352         if (dev &&
2353             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2354              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2355                 goto nla_put_failure;
2356
2357         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2358             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2359             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2360             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2361             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2362                         rdev->devlist_generation ^
2363                         (cfg80211_rdev_list_generation << 2)))
2364                 goto nla_put_failure;
2365
2366         if (rdev->ops->get_channel) {
2367                 int ret;
2368                 struct cfg80211_chan_def chandef;
2369
2370                 ret = rdev_get_channel(rdev, wdev, &chandef);
2371                 if (ret == 0) {
2372                         if (nl80211_send_chandef(msg, &chandef))
2373                                 goto nla_put_failure;
2374                 }
2375         }
2376
2377         if (wdev->ssid_len) {
2378                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2379                         goto nla_put_failure;
2380         }
2381
2382         return genlmsg_end(msg, hdr);
2383
2384  nla_put_failure:
2385         genlmsg_cancel(msg, hdr);
2386         return -EMSGSIZE;
2387 }
2388
2389 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2390 {
2391         int wp_idx = 0;
2392         int if_idx = 0;
2393         int wp_start = cb->args[0];
2394         int if_start = cb->args[1];
2395         struct cfg80211_registered_device *rdev;
2396         struct wireless_dev *wdev;
2397
2398         rtnl_lock();
2399         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2400                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2401                         continue;
2402                 if (wp_idx < wp_start) {
2403                         wp_idx++;
2404                         continue;
2405                 }
2406                 if_idx = 0;
2407
2408                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2409                         if (if_idx < if_start) {
2410                                 if_idx++;
2411                                 continue;
2412                         }
2413                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2414                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2415                                                rdev, wdev) < 0) {
2416                                 goto out;
2417                         }
2418                         if_idx++;
2419                 }
2420
2421                 wp_idx++;
2422         }
2423  out:
2424         rtnl_unlock();
2425
2426         cb->args[0] = wp_idx;
2427         cb->args[1] = if_idx;
2428
2429         return skb->len;
2430 }
2431
2432 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2433 {
2434         struct sk_buff *msg;
2435         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2436         struct wireless_dev *wdev = info->user_ptr[1];
2437
2438         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2439         if (!msg)
2440                 return -ENOMEM;
2441
2442         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2443                                rdev, wdev) < 0) {
2444                 nlmsg_free(msg);
2445                 return -ENOBUFS;
2446         }
2447
2448         return genlmsg_reply(msg, info);
2449 }
2450
2451 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2452         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2453         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2454         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2455         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2456         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2457         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2458 };
2459
2460 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2461 {
2462         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2463         int flag;
2464
2465         *mntrflags = 0;
2466
2467         if (!nla)
2468                 return -EINVAL;
2469
2470         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2471                              nla, mntr_flags_policy))
2472                 return -EINVAL;
2473
2474         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2475                 if (flags[flag])
2476                         *mntrflags |= (1<<flag);
2477
2478         return 0;
2479 }
2480
2481 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2482                                struct net_device *netdev, u8 use_4addr,
2483                                enum nl80211_iftype iftype)
2484 {
2485         if (!use_4addr) {
2486                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2487                         return -EBUSY;
2488                 return 0;
2489         }
2490
2491         switch (iftype) {
2492         case NL80211_IFTYPE_AP_VLAN:
2493                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2494                         return 0;
2495                 break;
2496         case NL80211_IFTYPE_STATION:
2497                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2498                         return 0;
2499                 break;
2500         default:
2501                 break;
2502         }
2503
2504         return -EOPNOTSUPP;
2505 }
2506
2507 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2508 {
2509         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2510         struct vif_params params;
2511         int err;
2512         enum nl80211_iftype otype, ntype;
2513         struct net_device *dev = info->user_ptr[1];
2514         u32 _flags, *flags = NULL;
2515         bool change = false;
2516
2517         memset(&params, 0, sizeof(params));
2518
2519         otype = ntype = dev->ieee80211_ptr->iftype;
2520
2521         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2522                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2523                 if (otype != ntype)
2524                         change = true;
2525                 if (ntype > NL80211_IFTYPE_MAX)
2526                         return -EINVAL;
2527         }
2528
2529         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2530                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2531
2532                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2533                         return -EINVAL;
2534                 if (netif_running(dev))
2535                         return -EBUSY;
2536
2537                 wdev_lock(wdev);
2538                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2539                              IEEE80211_MAX_MESH_ID_LEN);
2540                 wdev->mesh_id_up_len =
2541                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2542                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2543                        wdev->mesh_id_up_len);
2544                 wdev_unlock(wdev);
2545         }
2546
2547         if (info->attrs[NL80211_ATTR_4ADDR]) {
2548                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2549                 change = true;
2550                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2551                 if (err)
2552                         return err;
2553         } else {
2554                 params.use_4addr = -1;
2555         }
2556
2557         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2558                 if (ntype != NL80211_IFTYPE_MONITOR)
2559                         return -EINVAL;
2560                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2561                                           &_flags);
2562                 if (err)
2563                         return err;
2564
2565                 flags = &_flags;
2566                 change = true;
2567         }
2568
2569         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2570             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2571                 return -EOPNOTSUPP;
2572
2573         if (change)
2574                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2575         else
2576                 err = 0;
2577
2578         if (!err && params.use_4addr != -1)
2579                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2580
2581         return err;
2582 }
2583
2584 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2585 {
2586         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2587         struct vif_params params;
2588         struct wireless_dev *wdev;
2589         struct sk_buff *msg;
2590         int err;
2591         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2592         u32 flags;
2593
2594         /* to avoid failing a new interface creation due to pending removal */
2595         cfg80211_destroy_ifaces(rdev);
2596
2597         memset(&params, 0, sizeof(params));
2598
2599         if (!info->attrs[NL80211_ATTR_IFNAME])
2600                 return -EINVAL;
2601
2602         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2603                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2604                 if (type > NL80211_IFTYPE_MAX)
2605                         return -EINVAL;
2606         }
2607
2608         if (!rdev->ops->add_virtual_intf ||
2609             !(rdev->wiphy.interface_modes & (1 << type)))
2610                 return -EOPNOTSUPP;
2611
2612         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2613              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2614             info->attrs[NL80211_ATTR_MAC]) {
2615                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2616                            ETH_ALEN);
2617                 if (!is_valid_ether_addr(params.macaddr))
2618                         return -EADDRNOTAVAIL;
2619         }
2620
2621         if (info->attrs[NL80211_ATTR_4ADDR]) {
2622                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2623                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2624                 if (err)
2625                         return err;
2626         }
2627
2628         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2629         if (!msg)
2630                 return -ENOMEM;
2631
2632         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2633                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2634                                   &flags);
2635
2636         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2637             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2638                 return -EOPNOTSUPP;
2639
2640         wdev = rdev_add_virtual_intf(rdev,
2641                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2642                                 type, err ? NULL : &flags, &params);
2643         if (IS_ERR(wdev)) {
2644                 nlmsg_free(msg);
2645                 return PTR_ERR(wdev);
2646         }
2647
2648         if (info->attrs[NL80211_ATTR_IFACE_SOCKET_OWNER])
2649                 wdev->owner_nlportid = info->snd_portid;
2650
2651         switch (type) {
2652         case NL80211_IFTYPE_MESH_POINT:
2653                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2654                         break;
2655                 wdev_lock(wdev);
2656                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2657                              IEEE80211_MAX_MESH_ID_LEN);
2658                 wdev->mesh_id_up_len =
2659                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2660                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2661                        wdev->mesh_id_up_len);
2662                 wdev_unlock(wdev);
2663                 break;
2664         case NL80211_IFTYPE_P2P_DEVICE:
2665                 /*
2666                  * P2P Device doesn't have a netdev, so doesn't go
2667                  * through the netdev notifier and must be added here
2668                  */
2669                 mutex_init(&wdev->mtx);
2670                 INIT_LIST_HEAD(&wdev->event_list);
2671                 spin_lock_init(&wdev->event_lock);
2672                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2673                 spin_lock_init(&wdev->mgmt_registrations_lock);
2674
2675                 wdev->identifier = ++rdev->wdev_id;
2676                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2677                 rdev->devlist_generation++;
2678                 break;
2679         default:
2680                 break;
2681         }
2682
2683         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2684                                rdev, wdev) < 0) {
2685                 nlmsg_free(msg);
2686                 return -ENOBUFS;
2687         }
2688
2689         return genlmsg_reply(msg, info);
2690 }
2691
2692 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2693 {
2694         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2695         struct wireless_dev *wdev = info->user_ptr[1];
2696
2697         if (!rdev->ops->del_virtual_intf)
2698                 return -EOPNOTSUPP;
2699
2700         /*
2701          * If we remove a wireless device without a netdev then clear
2702          * user_ptr[1] so that nl80211_post_doit won't dereference it
2703          * to check if it needs to do dev_put(). Otherwise it crashes
2704          * since the wdev has been freed, unlike with a netdev where
2705          * we need the dev_put() for the netdev to really be freed.
2706          */
2707         if (!wdev->netdev)
2708                 info->user_ptr[1] = NULL;
2709
2710         return rdev_del_virtual_intf(rdev, wdev);
2711 }
2712
2713 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2714 {
2715         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2716         struct net_device *dev = info->user_ptr[1];
2717         u16 noack_map;
2718
2719         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2720                 return -EINVAL;
2721
2722         if (!rdev->ops->set_noack_map)
2723                 return -EOPNOTSUPP;
2724
2725         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2726
2727         return rdev_set_noack_map(rdev, dev, noack_map);
2728 }
2729
2730 struct get_key_cookie {
2731         struct sk_buff *msg;
2732         int error;
2733         int idx;
2734 };
2735
2736 static void get_key_callback(void *c, struct key_params *params)
2737 {
2738         struct nlattr *key;
2739         struct get_key_cookie *cookie = c;
2740
2741         if ((params->key &&
2742              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2743                      params->key_len, params->key)) ||
2744             (params->seq &&
2745              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2746                      params->seq_len, params->seq)) ||
2747             (params->cipher &&
2748              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2749                          params->cipher)))
2750                 goto nla_put_failure;
2751
2752         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2753         if (!key)
2754                 goto nla_put_failure;
2755
2756         if ((params->key &&
2757              nla_put(cookie->msg, NL80211_KEY_DATA,
2758                      params->key_len, params->key)) ||
2759             (params->seq &&
2760              nla_put(cookie->msg, NL80211_KEY_SEQ,
2761                      params->seq_len, params->seq)) ||
2762             (params->cipher &&
2763              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2764                          params->cipher)))
2765                 goto nla_put_failure;
2766
2767         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2768                 goto nla_put_failure;
2769
2770         nla_nest_end(cookie->msg, key);
2771
2772         return;
2773  nla_put_failure:
2774         cookie->error = 1;
2775 }
2776
2777 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2778 {
2779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2780         int err;
2781         struct net_device *dev = info->user_ptr[1];
2782         u8 key_idx = 0;
2783         const u8 *mac_addr = NULL;
2784         bool pairwise;
2785         struct get_key_cookie cookie = {
2786                 .error = 0,
2787         };
2788         void *hdr;
2789         struct sk_buff *msg;
2790
2791         if (info->attrs[NL80211_ATTR_KEY_IDX])
2792                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2793
2794         if (key_idx > 5)
2795                 return -EINVAL;
2796
2797         if (info->attrs[NL80211_ATTR_MAC])
2798                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2799
2800         pairwise = !!mac_addr;
2801         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2802                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2803                 if (kt >= NUM_NL80211_KEYTYPES)
2804                         return -EINVAL;
2805                 if (kt != NL80211_KEYTYPE_GROUP &&
2806                     kt != NL80211_KEYTYPE_PAIRWISE)
2807                         return -EINVAL;
2808                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2809         }
2810
2811         if (!rdev->ops->get_key)
2812                 return -EOPNOTSUPP;
2813
2814         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2815         if (!msg)
2816                 return -ENOMEM;
2817
2818         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2819                              NL80211_CMD_NEW_KEY);
2820         if (!hdr)
2821                 goto nla_put_failure;
2822
2823         cookie.msg = msg;
2824         cookie.idx = key_idx;
2825
2826         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2827             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2828                 goto nla_put_failure;
2829         if (mac_addr &&
2830             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2831                 goto nla_put_failure;
2832
2833         if (pairwise && mac_addr &&
2834             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2835                 return -ENOENT;
2836
2837         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2838                            get_key_callback);
2839
2840         if (err)
2841                 goto free_msg;
2842
2843         if (cookie.error)
2844                 goto nla_put_failure;
2845
2846         genlmsg_end(msg, hdr);
2847         return genlmsg_reply(msg, info);
2848
2849  nla_put_failure:
2850         err = -ENOBUFS;
2851  free_msg:
2852         nlmsg_free(msg);
2853         return err;
2854 }
2855
2856 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2857 {
2858         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2859         struct key_parse key;
2860         int err;
2861         struct net_device *dev = info->user_ptr[1];
2862
2863         err = nl80211_parse_key(info, &key);
2864         if (err)
2865                 return err;
2866
2867         if (key.idx < 0)
2868                 return -EINVAL;
2869
2870         /* only support setting default key */
2871         if (!key.def && !key.defmgmt)
2872                 return -EINVAL;
2873
2874         wdev_lock(dev->ieee80211_ptr);
2875
2876         if (key.def) {
2877                 if (!rdev->ops->set_default_key) {
2878                         err = -EOPNOTSUPP;
2879                         goto out;
2880                 }
2881
2882                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2883                 if (err)
2884                         goto out;
2885
2886                 err = rdev_set_default_key(rdev, dev, key.idx,
2887                                                  key.def_uni, key.def_multi);
2888
2889                 if (err)
2890                         goto out;
2891
2892 #ifdef CONFIG_CFG80211_WEXT
2893                 dev->ieee80211_ptr->wext.default_key = key.idx;
2894 #endif
2895         } else {
2896                 if (key.def_uni || !key.def_multi) {
2897                         err = -EINVAL;
2898                         goto out;
2899                 }
2900
2901                 if (!rdev->ops->set_default_mgmt_key) {
2902                         err = -EOPNOTSUPP;
2903                         goto out;
2904                 }
2905
2906                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2907                 if (err)
2908                         goto out;
2909
2910                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2911                 if (err)
2912                         goto out;
2913
2914 #ifdef CONFIG_CFG80211_WEXT
2915                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2916 #endif
2917         }
2918
2919  out:
2920         wdev_unlock(dev->ieee80211_ptr);
2921
2922         return err;
2923 }
2924
2925 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2926 {
2927         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2928         int err;
2929         struct net_device *dev = info->user_ptr[1];
2930         struct key_parse key;
2931         const u8 *mac_addr = NULL;
2932
2933         err = nl80211_parse_key(info, &key);
2934         if (err)
2935                 return err;
2936
2937         if (!key.p.key)
2938                 return -EINVAL;
2939
2940         if (info->attrs[NL80211_ATTR_MAC])
2941                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2942
2943         if (key.type == -1) {
2944                 if (mac_addr)
2945                         key.type = NL80211_KEYTYPE_PAIRWISE;
2946                 else
2947                         key.type = NL80211_KEYTYPE_GROUP;
2948         }
2949
2950         /* for now */
2951         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2952             key.type != NL80211_KEYTYPE_GROUP)
2953                 return -EINVAL;
2954
2955         if (!rdev->ops->add_key)
2956                 return -EOPNOTSUPP;
2957
2958         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
2959                                            key.type == NL80211_KEYTYPE_PAIRWISE,
2960                                            mac_addr))
2961                 return -EINVAL;
2962
2963         wdev_lock(dev->ieee80211_ptr);
2964         err = nl80211_key_allowed(dev->ieee80211_ptr);
2965         if (!err)
2966                 err = rdev_add_key(rdev, dev, key.idx,
2967                                    key.type == NL80211_KEYTYPE_PAIRWISE,
2968                                     mac_addr, &key.p);
2969         wdev_unlock(dev->ieee80211_ptr);
2970
2971         return err;
2972 }
2973
2974 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
2975 {
2976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2977         int err;
2978         struct net_device *dev = info->user_ptr[1];
2979         u8 *mac_addr = NULL;
2980         struct key_parse key;
2981
2982         err = nl80211_parse_key(info, &key);
2983         if (err)
2984                 return err;
2985
2986         if (info->attrs[NL80211_ATTR_MAC])
2987                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2988
2989         if (key.type == -1) {
2990                 if (mac_addr)
2991                         key.type = NL80211_KEYTYPE_PAIRWISE;
2992                 else
2993                         key.type = NL80211_KEYTYPE_GROUP;
2994         }
2995
2996         /* for now */
2997         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
2998             key.type != NL80211_KEYTYPE_GROUP)
2999                 return -EINVAL;
3000
3001         if (!rdev->ops->del_key)
3002                 return -EOPNOTSUPP;
3003
3004         wdev_lock(dev->ieee80211_ptr);
3005         err = nl80211_key_allowed(dev->ieee80211_ptr);
3006
3007         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3008             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3009                 err = -ENOENT;
3010
3011         if (!err)
3012                 err = rdev_del_key(rdev, dev, key.idx,
3013                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3014                                    mac_addr);
3015
3016 #ifdef CONFIG_CFG80211_WEXT
3017         if (!err) {
3018                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3019                         dev->ieee80211_ptr->wext.default_key = -1;
3020                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3021                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3022         }
3023 #endif
3024         wdev_unlock(dev->ieee80211_ptr);
3025
3026         return err;
3027 }
3028
3029 /* This function returns an error or the number of nested attributes */
3030 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3031 {
3032         struct nlattr *attr;
3033         int n_entries = 0, tmp;
3034
3035         nla_for_each_nested(attr, nl_attr, tmp) {
3036                 if (nla_len(attr) != ETH_ALEN)
3037                         return -EINVAL;
3038
3039                 n_entries++;
3040         }
3041
3042         return n_entries;
3043 }
3044
3045 /*
3046  * This function parses ACL information and allocates memory for ACL data.
3047  * On successful return, the calling function is responsible to free the
3048  * ACL buffer returned by this function.
3049  */
3050 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3051                                                 struct genl_info *info)
3052 {
3053         enum nl80211_acl_policy acl_policy;
3054         struct nlattr *attr;
3055         struct cfg80211_acl_data *acl;
3056         int i = 0, n_entries, tmp;
3057
3058         if (!wiphy->max_acl_mac_addrs)
3059                 return ERR_PTR(-EOPNOTSUPP);
3060
3061         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3062                 return ERR_PTR(-EINVAL);
3063
3064         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3065         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3066             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3067                 return ERR_PTR(-EINVAL);
3068
3069         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3070                 return ERR_PTR(-EINVAL);
3071
3072         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3073         if (n_entries < 0)
3074                 return ERR_PTR(n_entries);
3075
3076         if (n_entries > wiphy->max_acl_mac_addrs)
3077                 return ERR_PTR(-ENOTSUPP);
3078
3079         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3080                       GFP_KERNEL);
3081         if (!acl)
3082                 return ERR_PTR(-ENOMEM);
3083
3084         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3085                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3086                 i++;
3087         }
3088
3089         acl->n_acl_entries = n_entries;
3090         acl->acl_policy = acl_policy;
3091
3092         return acl;
3093 }
3094
3095 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3096 {
3097         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3098         struct net_device *dev = info->user_ptr[1];
3099         struct cfg80211_acl_data *acl;
3100         int err;
3101
3102         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3103             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3104                 return -EOPNOTSUPP;
3105
3106         if (!dev->ieee80211_ptr->beacon_interval)
3107                 return -EINVAL;
3108
3109         acl = parse_acl_data(&rdev->wiphy, info);
3110         if (IS_ERR(acl))
3111                 return PTR_ERR(acl);
3112
3113         err = rdev_set_mac_acl(rdev, dev, acl);
3114
3115         kfree(acl);
3116
3117         return err;
3118 }
3119
3120 static int nl80211_parse_beacon(struct nlattr *attrs[],
3121                                 struct cfg80211_beacon_data *bcn)
3122 {
3123         bool haveinfo = false;
3124
3125         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3126             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3127             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3128             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3129                 return -EINVAL;
3130
3131         memset(bcn, 0, sizeof(*bcn));
3132
3133         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3134                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3135                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3136                 if (!bcn->head_len)
3137                         return -EINVAL;
3138                 haveinfo = true;
3139         }
3140
3141         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3142                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3143                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3144                 haveinfo = true;
3145         }
3146
3147         if (!haveinfo)
3148                 return -EINVAL;
3149
3150         if (attrs[NL80211_ATTR_IE]) {
3151                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3152                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3153         }
3154
3155         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3156                 bcn->proberesp_ies =
3157                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3158                 bcn->proberesp_ies_len =
3159                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3160         }
3161
3162         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3163                 bcn->assocresp_ies =
3164                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3165                 bcn->assocresp_ies_len =
3166                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3167         }
3168
3169         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3170                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3171                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3172         }
3173
3174         return 0;
3175 }
3176
3177 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3178                                    struct cfg80211_ap_settings *params)
3179 {
3180         struct wireless_dev *wdev;
3181         bool ret = false;
3182
3183         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3184                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3185                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3186                         continue;
3187
3188                 if (!wdev->preset_chandef.chan)
3189                         continue;
3190
3191                 params->chandef = wdev->preset_chandef;
3192                 ret = true;
3193                 break;
3194         }
3195
3196         return ret;
3197 }
3198
3199 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3200                                     enum nl80211_auth_type auth_type,
3201                                     enum nl80211_commands cmd)
3202 {
3203         if (auth_type > NL80211_AUTHTYPE_MAX)
3204                 return false;
3205
3206         switch (cmd) {
3207         case NL80211_CMD_AUTHENTICATE:
3208                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3209                     auth_type == NL80211_AUTHTYPE_SAE)
3210                         return false;
3211                 return true;
3212         case NL80211_CMD_CONNECT:
3213         case NL80211_CMD_START_AP:
3214                 /* SAE not supported yet */
3215                 if (auth_type == NL80211_AUTHTYPE_SAE)
3216                         return false;
3217                 return true;
3218         default:
3219                 return false;
3220         }
3221 }
3222
3223 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3224 {
3225         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3226         struct net_device *dev = info->user_ptr[1];
3227         struct wireless_dev *wdev = dev->ieee80211_ptr;
3228         struct cfg80211_ap_settings params;
3229         int err;
3230
3231         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3232             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3233                 return -EOPNOTSUPP;
3234
3235         if (!rdev->ops->start_ap)
3236                 return -EOPNOTSUPP;
3237
3238         if (wdev->beacon_interval)
3239                 return -EALREADY;
3240
3241         memset(&params, 0, sizeof(params));
3242
3243         /* these are required for START_AP */
3244         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3245             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3246             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3247                 return -EINVAL;
3248
3249         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3250         if (err)
3251                 return err;
3252
3253         params.beacon_interval =
3254                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3255         params.dtim_period =
3256                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3257
3258         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3259         if (err)
3260                 return err;
3261
3262         /*
3263          * In theory, some of these attributes should be required here
3264          * but since they were not used when the command was originally
3265          * added, keep them optional for old user space programs to let
3266          * them continue to work with drivers that do not need the
3267          * additional information -- drivers must check!
3268          */
3269         if (info->attrs[NL80211_ATTR_SSID]) {
3270                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3271                 params.ssid_len =
3272                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3273                 if (params.ssid_len == 0 ||
3274                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3275                         return -EINVAL;
3276         }
3277
3278         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3279                 params.hidden_ssid = nla_get_u32(
3280                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3281                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3282                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3283                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3284                         return -EINVAL;
3285         }
3286
3287         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3288
3289         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3290                 params.auth_type = nla_get_u32(
3291                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3292                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3293                                              NL80211_CMD_START_AP))
3294                         return -EINVAL;
3295         } else
3296                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3297
3298         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3299                                       NL80211_MAX_NR_CIPHER_SUITES);
3300         if (err)
3301                 return err;
3302
3303         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3304                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3305                         return -EOPNOTSUPP;
3306                 params.inactivity_timeout = nla_get_u16(
3307                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3308         }
3309
3310         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3311                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3312                         return -EINVAL;
3313                 params.p2p_ctwindow =
3314                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3315                 if (params.p2p_ctwindow > 127)
3316                         return -EINVAL;
3317                 if (params.p2p_ctwindow != 0 &&
3318                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3319                         return -EINVAL;
3320         }
3321
3322         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3323                 u8 tmp;
3324
3325                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3326                         return -EINVAL;
3327                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3328                 if (tmp > 1)
3329                         return -EINVAL;
3330                 params.p2p_opp_ps = tmp;
3331                 if (params.p2p_opp_ps != 0 &&
3332                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3333                         return -EINVAL;
3334         }
3335
3336         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3337                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3338                 if (err)
3339                         return err;
3340         } else if (wdev->preset_chandef.chan) {
3341                 params.chandef = wdev->preset_chandef;
3342         } else if (!nl80211_get_ap_channel(rdev, &params))
3343                 return -EINVAL;
3344
3345         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3346                                      wdev->iftype))
3347                 return -EINVAL;
3348
3349         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3350                 params.acl = parse_acl_data(&rdev->wiphy, info);
3351                 if (IS_ERR(params.acl))
3352                         return PTR_ERR(params.acl);
3353         }
3354
3355         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3356                 params.smps_mode =
3357                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3358                 switch (params.smps_mode) {
3359                 case NL80211_SMPS_OFF:
3360                         break;
3361                 case NL80211_SMPS_STATIC:
3362                         if (!(rdev->wiphy.features &
3363                               NL80211_FEATURE_STATIC_SMPS))
3364                                 return -EINVAL;
3365                         break;
3366                 case NL80211_SMPS_DYNAMIC:
3367                         if (!(rdev->wiphy.features &
3368                               NL80211_FEATURE_DYNAMIC_SMPS))
3369                                 return -EINVAL;
3370                         break;
3371                 default:
3372                         return -EINVAL;
3373                 }
3374         } else {
3375                 params.smps_mode = NL80211_SMPS_OFF;
3376         }
3377
3378         wdev_lock(wdev);
3379         err = rdev_start_ap(rdev, dev, &params);
3380         if (!err) {
3381                 wdev->preset_chandef = params.chandef;
3382                 wdev->beacon_interval = params.beacon_interval;
3383                 wdev->chandef = params.chandef;
3384                 wdev->ssid_len = params.ssid_len;
3385                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3386         }
3387         wdev_unlock(wdev);
3388
3389         kfree(params.acl);
3390
3391         return err;
3392 }
3393
3394 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3395 {
3396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3397         struct net_device *dev = info->user_ptr[1];
3398         struct wireless_dev *wdev = dev->ieee80211_ptr;
3399         struct cfg80211_beacon_data params;
3400         int err;
3401
3402         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3403             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3404                 return -EOPNOTSUPP;
3405
3406         if (!rdev->ops->change_beacon)
3407                 return -EOPNOTSUPP;
3408
3409         if (!wdev->beacon_interval)
3410                 return -EINVAL;
3411
3412         err = nl80211_parse_beacon(info->attrs, &params);
3413         if (err)
3414                 return err;
3415
3416         wdev_lock(wdev);
3417         err = rdev_change_beacon(rdev, dev, &params);
3418         wdev_unlock(wdev);
3419
3420         return err;
3421 }
3422
3423 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3424 {
3425         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3426         struct net_device *dev = info->user_ptr[1];
3427
3428         return cfg80211_stop_ap(rdev, dev, false);
3429 }
3430
3431 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3432         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3433         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3434         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3435         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3436         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3437         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3438 };
3439
3440 static int parse_station_flags(struct genl_info *info,
3441                                enum nl80211_iftype iftype,
3442                                struct station_parameters *params)
3443 {
3444         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3445         struct nlattr *nla;
3446         int flag;
3447
3448         /*
3449          * Try parsing the new attribute first so userspace
3450          * can specify both for older kernels.
3451          */
3452         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3453         if (nla) {
3454                 struct nl80211_sta_flag_update *sta_flags;
3455
3456                 sta_flags = nla_data(nla);
3457                 params->sta_flags_mask = sta_flags->mask;
3458                 params->sta_flags_set = sta_flags->set;
3459                 params->sta_flags_set &= params->sta_flags_mask;
3460                 if ((params->sta_flags_mask |
3461                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3462                         return -EINVAL;
3463                 return 0;
3464         }
3465
3466         /* if present, parse the old attribute */
3467
3468         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3469         if (!nla)
3470                 return 0;
3471
3472         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3473                              nla, sta_flags_policy))
3474                 return -EINVAL;
3475
3476         /*
3477          * Only allow certain flags for interface types so that
3478          * other attributes are silently ignored. Remember that
3479          * this is backward compatibility code with old userspace
3480          * and shouldn't be hit in other cases anyway.
3481          */
3482         switch (iftype) {
3483         case NL80211_IFTYPE_AP:
3484         case NL80211_IFTYPE_AP_VLAN:
3485         case NL80211_IFTYPE_P2P_GO:
3486                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3487                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3488                                          BIT(NL80211_STA_FLAG_WME) |
3489                                          BIT(NL80211_STA_FLAG_MFP);
3490                 break;
3491         case NL80211_IFTYPE_P2P_CLIENT:
3492         case NL80211_IFTYPE_STATION:
3493                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3494                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3495                 break;
3496         case NL80211_IFTYPE_MESH_POINT:
3497                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3498                                          BIT(NL80211_STA_FLAG_MFP) |
3499                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3500         default:
3501                 return -EINVAL;
3502         }
3503
3504         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3505                 if (flags[flag]) {
3506                         params->sta_flags_set |= (1<<flag);
3507
3508                         /* no longer support new API additions in old API */
3509                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3510                                 return -EINVAL;
3511                 }
3512         }
3513
3514         return 0;
3515 }
3516
3517 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3518                                  int attr)
3519 {
3520         struct nlattr *rate;
3521         u32 bitrate;
3522         u16 bitrate_compat;
3523
3524         rate = nla_nest_start(msg, attr);
3525         if (!rate)
3526                 return false;
3527
3528         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3529         bitrate = cfg80211_calculate_bitrate(info);
3530         /* report 16-bit bitrate only if we can */
3531         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3532         if (bitrate > 0 &&
3533             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3534                 return false;
3535         if (bitrate_compat > 0 &&
3536             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3537                 return false;
3538
3539         if (info->flags & RATE_INFO_FLAGS_MCS) {
3540                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3541                         return false;
3542                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3543                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3544                         return false;
3545                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3546                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3547                         return false;
3548         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3549                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3550                         return false;
3551                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3552                         return false;
3553                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3554                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3555                         return false;
3556                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3557                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3558                         return false;
3559                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3560                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3561                         return false;
3562                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3563                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3564                         return false;
3565                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3566                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3567                         return false;
3568         }
3569
3570         nla_nest_end(msg, rate);
3571         return true;
3572 }
3573
3574 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3575                                int id)
3576 {
3577         void *attr;
3578         int i = 0;
3579
3580         if (!mask)
3581                 return true;
3582
3583         attr = nla_nest_start(msg, id);
3584         if (!attr)
3585                 return false;
3586
3587         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3588                 if (!(mask & BIT(i)))
3589                         continue;
3590
3591                 if (nla_put_u8(msg, i, signal[i]))
3592                         return false;
3593         }
3594
3595         nla_nest_end(msg, attr);
3596
3597         return true;
3598 }
3599
3600 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq,
3601                                 int flags,
3602                                 struct cfg80211_registered_device *rdev,
3603                                 struct net_device *dev,
3604                                 const u8 *mac_addr, struct station_info *sinfo)
3605 {
3606         void *hdr;
3607         struct nlattr *sinfoattr, *bss_param;
3608
3609         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
3610         if (!hdr)
3611                 return -1;
3612
3613         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3614             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3615             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3616                 goto nla_put_failure;
3617
3618         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3619         if (!sinfoattr)
3620                 goto nla_put_failure;
3621         if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) &&
3622             nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME,
3623                         sinfo->connected_time))
3624                 goto nla_put_failure;
3625         if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) &&
3626             nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME,
3627                         sinfo->inactive_time))
3628                 goto nla_put_failure;
3629         if ((sinfo->filled & (STATION_INFO_RX_BYTES |
3630                               STATION_INFO_RX_BYTES64)) &&
3631             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3632                         (u32)sinfo->rx_bytes))
3633                 goto nla_put_failure;
3634         if ((sinfo->filled & (STATION_INFO_TX_BYTES |
3635                               STATION_INFO_TX_BYTES64)) &&
3636             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3637                         (u32)sinfo->tx_bytes))
3638                 goto nla_put_failure;
3639         if ((sinfo->filled & STATION_INFO_RX_BYTES64) &&
3640             nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64,
3641                         sinfo->rx_bytes))
3642                 goto nla_put_failure;
3643         if ((sinfo->filled & STATION_INFO_TX_BYTES64) &&
3644             nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64,
3645                         sinfo->tx_bytes))
3646                 goto nla_put_failure;
3647         if ((sinfo->filled & STATION_INFO_LLID) &&
3648             nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid))
3649                 goto nla_put_failure;
3650         if ((sinfo->filled & STATION_INFO_PLID) &&
3651             nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid))
3652                 goto nla_put_failure;
3653         if ((sinfo->filled & STATION_INFO_PLINK_STATE) &&
3654             nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE,
3655                        sinfo->plink_state))
3656                 goto nla_put_failure;
3657         switch (rdev->wiphy.signal_type) {
3658         case CFG80211_SIGNAL_TYPE_MBM:
3659                 if ((sinfo->filled & STATION_INFO_SIGNAL) &&
3660                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL,
3661                                sinfo->signal))
3662                         goto nla_put_failure;
3663                 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) &&
3664                     nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG,
3665                                sinfo->signal_avg))
3666                         goto nla_put_failure;
3667                 break;
3668         default:
3669                 break;
3670         }
3671         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) {
3672                 if (!nl80211_put_signal(msg, sinfo->chains,
3673                                         sinfo->chain_signal,
3674                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3675                         goto nla_put_failure;
3676         }
3677         if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) {
3678                 if (!nl80211_put_signal(msg, sinfo->chains,
3679                                         sinfo->chain_signal_avg,
3680                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3681                         goto nla_put_failure;
3682         }
3683         if (sinfo->filled & STATION_INFO_TX_BITRATE) {
3684                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3685                                           NL80211_STA_INFO_TX_BITRATE))
3686                         goto nla_put_failure;
3687         }
3688         if (sinfo->filled & STATION_INFO_RX_BITRATE) {
3689                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3690                                           NL80211_STA_INFO_RX_BITRATE))
3691                         goto nla_put_failure;
3692         }
3693         if ((sinfo->filled & STATION_INFO_RX_PACKETS) &&
3694             nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS,
3695                         sinfo->rx_packets))
3696                 goto nla_put_failure;
3697         if ((sinfo->filled & STATION_INFO_TX_PACKETS) &&
3698             nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS,
3699                         sinfo->tx_packets))
3700                 goto nla_put_failure;
3701         if ((sinfo->filled & STATION_INFO_TX_RETRIES) &&
3702             nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES,
3703                         sinfo->tx_retries))
3704                 goto nla_put_failure;
3705         if ((sinfo->filled & STATION_INFO_TX_FAILED) &&
3706             nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED,
3707                         sinfo->tx_failed))
3708                 goto nla_put_failure;
3709         if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) &&
3710             nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT,
3711                         sinfo->expected_throughput))
3712                 goto nla_put_failure;
3713         if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) &&
3714             nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS,
3715                         sinfo->beacon_loss_count))
3716                 goto nla_put_failure;
3717         if ((sinfo->filled & STATION_INFO_LOCAL_PM) &&
3718             nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM,
3719                         sinfo->local_pm))
3720                 goto nla_put_failure;
3721         if ((sinfo->filled & STATION_INFO_PEER_PM) &&
3722             nla_put_u32(msg, NL80211_STA_INFO_PEER_PM,
3723                         sinfo->peer_pm))
3724                 goto nla_put_failure;
3725         if ((sinfo->filled & STATION_INFO_NONPEER_PM) &&
3726             nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM,
3727                         sinfo->nonpeer_pm))
3728                 goto nla_put_failure;
3729         if (sinfo->filled & STATION_INFO_BSS_PARAM) {
3730                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3731                 if (!bss_param)
3732                         goto nla_put_failure;
3733
3734                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3735                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3736                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3737                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3738                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3739                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3740                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3741                                sinfo->bss_param.dtim_period) ||
3742                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3743                                 sinfo->bss_param.beacon_interval))
3744                         goto nla_put_failure;
3745
3746                 nla_nest_end(msg, bss_param);
3747         }
3748         if ((sinfo->filled & STATION_INFO_STA_FLAGS) &&
3749             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3750                     sizeof(struct nl80211_sta_flag_update),
3751                     &sinfo->sta_flags))
3752                 goto nla_put_failure;
3753         if ((sinfo->filled & STATION_INFO_T_OFFSET) &&
3754                 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET,
3755                             sinfo->t_offset))
3756                 goto nla_put_failure;
3757         nla_nest_end(msg, sinfoattr);
3758
3759         if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) &&
3760             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3761                     sinfo->assoc_req_ies))
3762                 goto nla_put_failure;
3763
3764         return genlmsg_end(msg, hdr);
3765
3766  nla_put_failure:
3767         genlmsg_cancel(msg, hdr);
3768         return -EMSGSIZE;
3769 }
3770
3771 static int nl80211_dump_station(struct sk_buff *skb,
3772                                 struct netlink_callback *cb)
3773 {
3774         struct station_info sinfo;
3775         struct cfg80211_registered_device *rdev;
3776         struct wireless_dev *wdev;
3777         u8 mac_addr[ETH_ALEN];
3778         int sta_idx = cb->args[2];
3779         int err;
3780
3781         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3782         if (err)
3783                 return err;
3784
3785         if (!wdev->netdev) {
3786                 err = -EINVAL;
3787                 goto out_err;
3788         }
3789
3790         if (!rdev->ops->dump_station) {
3791                 err = -EOPNOTSUPP;
3792                 goto out_err;
3793         }
3794
3795         while (1) {
3796                 memset(&sinfo, 0, sizeof(sinfo));
3797                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3798                                         mac_addr, &sinfo);
3799                 if (err == -ENOENT)
3800                         break;
3801                 if (err)
3802                         goto out_err;
3803
3804                 if (nl80211_send_station(skb,
3805                                 NETLINK_CB(cb->skb).portid,
3806                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3807                                 rdev, wdev->netdev, mac_addr,
3808                                 &sinfo) < 0)
3809                         goto out;
3810
3811                 sta_idx++;
3812         }
3813
3814
3815  out:
3816         cb->args[2] = sta_idx;
3817         err = skb->len;
3818  out_err:
3819         nl80211_finish_wdev_dump(rdev);
3820
3821         return err;
3822 }
3823
3824 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3825 {
3826         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3827         struct net_device *dev = info->user_ptr[1];
3828         struct station_info sinfo;
3829         struct sk_buff *msg;
3830         u8 *mac_addr = NULL;
3831         int err;
3832
3833         memset(&sinfo, 0, sizeof(sinfo));
3834
3835         if (!info->attrs[NL80211_ATTR_MAC])
3836                 return -EINVAL;
3837
3838         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3839
3840         if (!rdev->ops->get_station)
3841                 return -EOPNOTSUPP;
3842
3843         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3844         if (err)
3845                 return err;
3846
3847         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3848         if (!msg)
3849                 return -ENOMEM;
3850
3851         if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0,
3852                                  rdev, dev, mac_addr, &sinfo) < 0) {
3853                 nlmsg_free(msg);
3854                 return -ENOBUFS;
3855         }
3856
3857         return genlmsg_reply(msg, info);
3858 }
3859
3860 int cfg80211_check_station_change(struct wiphy *wiphy,
3861                                   struct station_parameters *params,
3862                                   enum cfg80211_station_type statype)
3863 {
3864         if (params->listen_interval != -1)
3865                 return -EINVAL;
3866         if (params->aid &&
3867             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3868                 return -EINVAL;
3869
3870         /* When you run into this, adjust the code below for the new flag */
3871         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3872
3873         switch (statype) {
3874         case CFG80211_STA_MESH_PEER_KERNEL:
3875         case CFG80211_STA_MESH_PEER_USER:
3876                 /*
3877                  * No ignoring the TDLS flag here -- the userspace mesh
3878                  * code doesn't have the bug of including TDLS in the
3879                  * mask everywhere.
3880                  */
3881                 if (params->sta_flags_mask &
3882                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3883                                   BIT(NL80211_STA_FLAG_MFP) |
3884                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3885                         return -EINVAL;
3886                 break;
3887         case CFG80211_STA_TDLS_PEER_SETUP:
3888         case CFG80211_STA_TDLS_PEER_ACTIVE:
3889                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3890                         return -EINVAL;
3891                 /* ignore since it can't change */
3892                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3893                 break;
3894         default:
3895                 /* disallow mesh-specific things */
3896                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3897                         return -EINVAL;
3898                 if (params->local_pm)
3899                         return -EINVAL;
3900                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3901                         return -EINVAL;
3902         }
3903
3904         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3905             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3906                 /* TDLS can't be set, ... */
3907                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3908                         return -EINVAL;
3909                 /*
3910                  * ... but don't bother the driver with it. This works around
3911                  * a hostapd/wpa_supplicant issue -- it always includes the
3912                  * TLDS_PEER flag in the mask even for AP mode.
3913                  */
3914                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3915         }
3916
3917         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3918                 /* reject other things that can't change */
3919                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3920                         return -EINVAL;
3921                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3922                         return -EINVAL;
3923                 if (params->supported_rates)
3924                         return -EINVAL;
3925                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3926                         return -EINVAL;
3927         }
3928
3929         if (statype != CFG80211_STA_AP_CLIENT) {
3930                 if (params->vlan)
3931                         return -EINVAL;
3932         }
3933
3934         switch (statype) {
3935         case CFG80211_STA_AP_MLME_CLIENT:
3936                 /* Use this only for authorizing/unauthorizing a station */
3937                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3938                         return -EOPNOTSUPP;
3939                 break;
3940         case CFG80211_STA_AP_CLIENT:
3941                 /* accept only the listed bits */
3942                 if (params->sta_flags_mask &
3943                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3944                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3945                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3946                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3947                                   BIT(NL80211_STA_FLAG_WME) |
3948                                   BIT(NL80211_STA_FLAG_MFP)))
3949                         return -EINVAL;
3950
3951                 /* but authenticated/associated only if driver handles it */
3952                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3953                     params->sta_flags_mask &
3954                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3955                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3956                         return -EINVAL;
3957                 break;
3958         case CFG80211_STA_IBSS:
3959         case CFG80211_STA_AP_STA:
3960                 /* reject any changes other than AUTHORIZED */
3961                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3962                         return -EINVAL;
3963                 break;
3964         case CFG80211_STA_TDLS_PEER_SETUP:
3965                 /* reject any changes other than AUTHORIZED or WME */
3966                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3967                                                BIT(NL80211_STA_FLAG_WME)))
3968                         return -EINVAL;
3969                 /* force (at least) rates when authorizing */
3970                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3971                     !params->supported_rates)
3972                         return -EINVAL;
3973                 break;
3974         case CFG80211_STA_TDLS_PEER_ACTIVE:
3975                 /* reject any changes */
3976                 return -EINVAL;
3977         case CFG80211_STA_MESH_PEER_KERNEL:
3978                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3979                         return -EINVAL;
3980                 break;
3981         case CFG80211_STA_MESH_PEER_USER:
3982                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3983                         return -EINVAL;
3984                 break;
3985         }
3986
3987         return 0;
3988 }
3989 EXPORT_SYMBOL(cfg80211_check_station_change);
3990
3991 /*
3992  * Get vlan interface making sure it is running and on the right wiphy.
3993  */
3994 static struct net_device *get_vlan(struct genl_info *info,
3995                                    struct cfg80211_registered_device *rdev)
3996 {
3997         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
3998         struct net_device *v;
3999         int ret;
4000
4001         if (!vlanattr)
4002                 return NULL;
4003
4004         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4005         if (!v)
4006                 return ERR_PTR(-ENODEV);
4007
4008         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4009                 ret = -EINVAL;
4010                 goto error;
4011         }
4012
4013         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4014             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4015             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4016                 ret = -EINVAL;
4017                 goto error;
4018         }
4019
4020         if (!netif_running(v)) {
4021                 ret = -ENETDOWN;
4022                 goto error;
4023         }
4024
4025         return v;
4026  error:
4027         dev_put(v);
4028         return ERR_PTR(ret);
4029 }
4030
4031 static const struct nla_policy
4032 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4033         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4034         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4035 };
4036
4037 static int nl80211_parse_sta_wme(struct genl_info *info,
4038                                  struct station_parameters *params)
4039 {
4040         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4041         struct nlattr *nla;
4042         int err;
4043
4044         /* parse WME attributes if present */
4045         if (!info->attrs[NL80211_ATTR_STA_WME])
4046                 return 0;
4047
4048         nla = info->attrs[NL80211_ATTR_STA_WME];
4049         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4050                                nl80211_sta_wme_policy);
4051         if (err)
4052                 return err;
4053
4054         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4055                 params->uapsd_queues = nla_get_u8(
4056                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4057         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4058                 return -EINVAL;
4059
4060         if (tb[NL80211_STA_WME_MAX_SP])
4061                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4062
4063         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4064                 return -EINVAL;
4065
4066         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4067
4068         return 0;
4069 }
4070
4071 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4072                                       struct station_parameters *params)
4073 {
4074         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4075                 params->supported_channels =
4076                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4077                 params->supported_channels_len =
4078                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4079                 /*
4080                  * Need to include at least one (first channel, number of
4081                  * channels) tuple for each subband, and must have proper
4082                  * tuples for the rest of the data as well.
4083                  */
4084                 if (params->supported_channels_len < 2)
4085                         return -EINVAL;
4086                 if (params->supported_channels_len % 2)
4087                         return -EINVAL;
4088         }
4089
4090         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4091                 params->supported_oper_classes =
4092                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4093                 params->supported_oper_classes_len =
4094                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4095                 /*
4096                  * The value of the Length field of the Supported Operating
4097                  * Classes element is between 2 and 253.
4098                  */
4099                 if (params->supported_oper_classes_len < 2 ||
4100                     params->supported_oper_classes_len > 253)
4101                         return -EINVAL;
4102         }
4103         return 0;
4104 }
4105
4106 static int nl80211_set_station_tdls(struct genl_info *info,
4107                                     struct station_parameters *params)
4108 {
4109         int err;
4110         /* Dummy STA entry gets updated once the peer capabilities are known */
4111         if (info->attrs[NL80211_ATTR_PEER_AID])
4112                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4113         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4114                 params->ht_capa =
4115                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4116         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4117                 params->vht_capa =
4118                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4119
4120         err = nl80211_parse_sta_channel_info(info, params);
4121         if (err)
4122                 return err;
4123
4124         return nl80211_parse_sta_wme(info, params);
4125 }
4126
4127 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4128 {
4129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4130         struct net_device *dev = info->user_ptr[1];
4131         struct station_parameters params;
4132         u8 *mac_addr;
4133         int err;
4134
4135         memset(&params, 0, sizeof(params));
4136
4137         params.listen_interval = -1;
4138
4139         if (!rdev->ops->change_station)
4140                 return -EOPNOTSUPP;
4141
4142         if (info->attrs[NL80211_ATTR_STA_AID])
4143                 return -EINVAL;
4144
4145         if (!info->attrs[NL80211_ATTR_MAC])
4146                 return -EINVAL;
4147
4148         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4149
4150         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4151                 params.supported_rates =
4152                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4153                 params.supported_rates_len =
4154                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4155         }
4156
4157         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4158                 params.capability =
4159                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4160                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4161         }
4162
4163         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4164                 params.ext_capab =
4165                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4166                 params.ext_capab_len =
4167                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4168         }
4169
4170         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4171                 return -EINVAL;
4172
4173         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4174                 return -EINVAL;
4175
4176         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4177                 params.plink_action =
4178                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4179                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4180                         return -EINVAL;
4181         }
4182
4183         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4184                 params.plink_state =
4185                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4186                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4187                         return -EINVAL;
4188                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4189         }
4190
4191         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4192                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4193                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4194
4195                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4196                     pm > NL80211_MESH_POWER_MAX)
4197                         return -EINVAL;
4198
4199                 params.local_pm = pm;
4200         }
4201
4202         /* Include parameters for TDLS peer (will check later) */
4203         err = nl80211_set_station_tdls(info, &params);
4204         if (err)
4205                 return err;
4206
4207         params.vlan = get_vlan(info, rdev);
4208         if (IS_ERR(params.vlan))
4209                 return PTR_ERR(params.vlan);
4210
4211         switch (dev->ieee80211_ptr->iftype) {
4212         case NL80211_IFTYPE_AP:
4213         case NL80211_IFTYPE_AP_VLAN:
4214         case NL80211_IFTYPE_P2P_GO:
4215         case NL80211_IFTYPE_P2P_CLIENT:
4216         case NL80211_IFTYPE_STATION:
4217         case NL80211_IFTYPE_ADHOC:
4218         case NL80211_IFTYPE_MESH_POINT:
4219                 break;
4220         default:
4221                 err = -EOPNOTSUPP;
4222                 goto out_put_vlan;
4223         }
4224
4225         /* driver will call cfg80211_check_station_change() */
4226         err = rdev_change_station(rdev, dev, mac_addr, &params);
4227
4228  out_put_vlan:
4229         if (params.vlan)
4230                 dev_put(params.vlan);
4231
4232         return err;
4233 }
4234
4235 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4236 {
4237         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4238         int err;
4239         struct net_device *dev = info->user_ptr[1];
4240         struct station_parameters params;
4241         u8 *mac_addr = NULL;
4242
4243         memset(&params, 0, sizeof(params));
4244
4245         if (!rdev->ops->add_station)
4246                 return -EOPNOTSUPP;
4247
4248         if (!info->attrs[NL80211_ATTR_MAC])
4249                 return -EINVAL;
4250
4251         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4252                 return -EINVAL;
4253
4254         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4255                 return -EINVAL;
4256
4257         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4258             !info->attrs[NL80211_ATTR_PEER_AID])
4259                 return -EINVAL;
4260
4261         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4262         params.supported_rates =
4263                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4264         params.supported_rates_len =
4265                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4266         params.listen_interval =
4267                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4268
4269         if (info->attrs[NL80211_ATTR_PEER_AID])
4270                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4271         else
4272                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4273         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4274                 return -EINVAL;
4275
4276         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4277                 params.capability =
4278                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4279                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4280         }
4281
4282         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4283                 params.ext_capab =
4284                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4285                 params.ext_capab_len =
4286                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4287         }
4288
4289         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4290                 params.ht_capa =
4291                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4292
4293         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4294                 params.vht_capa =
4295                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4296
4297         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4298                 params.opmode_notif_used = true;
4299                 params.opmode_notif =
4300                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4301         }
4302
4303         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4304                 params.plink_action =
4305                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4306                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4307                         return -EINVAL;
4308         }
4309
4310         err = nl80211_parse_sta_channel_info(info, &params);
4311         if (err)
4312                 return err;
4313
4314         err = nl80211_parse_sta_wme(info, &params);
4315         if (err)
4316                 return err;
4317
4318         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4319                 return -EINVAL;
4320
4321         /* When you run into this, adjust the code below for the new flag */
4322         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4323
4324         switch (dev->ieee80211_ptr->iftype) {
4325         case NL80211_IFTYPE_AP:
4326         case NL80211_IFTYPE_AP_VLAN:
4327         case NL80211_IFTYPE_P2P_GO:
4328                 /* ignore WME attributes if iface/sta is not capable */
4329                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4330                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4331                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4332
4333                 /* TDLS peers cannot be added */
4334                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4335                     info->attrs[NL80211_ATTR_PEER_AID])
4336                         return -EINVAL;
4337                 /* but don't bother the driver with it */
4338                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4339
4340                 /* allow authenticated/associated only if driver handles it */
4341                 if (!(rdev->wiphy.features &
4342                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4343                     params.sta_flags_mask &
4344                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4345                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4346                         return -EINVAL;
4347
4348                 /* must be last in here for error handling */
4349                 params.vlan = get_vlan(info, rdev);
4350                 if (IS_ERR(params.vlan))
4351                         return PTR_ERR(params.vlan);
4352                 break;
4353         case NL80211_IFTYPE_MESH_POINT:
4354                 /* ignore uAPSD data */
4355                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4356
4357                 /* associated is disallowed */
4358                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4359                         return -EINVAL;
4360                 /* TDLS peers cannot be added */
4361                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4362                     info->attrs[NL80211_ATTR_PEER_AID])
4363                         return -EINVAL;
4364                 break;
4365         case NL80211_IFTYPE_STATION:
4366         case NL80211_IFTYPE_P2P_CLIENT:
4367                 /* ignore uAPSD data */
4368                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4369
4370                 /* these are disallowed */
4371                 if (params.sta_flags_mask &
4372                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4373                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4374                         return -EINVAL;
4375                 /* Only TDLS peers can be added */
4376                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4377                         return -EINVAL;
4378                 /* Can only add if TDLS ... */
4379                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4380                         return -EOPNOTSUPP;
4381                 /* ... with external setup is supported */
4382                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4383                         return -EOPNOTSUPP;
4384                 /*
4385                  * Older wpa_supplicant versions always mark the TDLS peer
4386                  * as authorized, but it shouldn't yet be.
4387                  */
4388                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4389                 break;
4390         default:
4391                 return -EOPNOTSUPP;
4392         }
4393
4394         /* be aware of params.vlan when changing code here */
4395
4396         err = rdev_add_station(rdev, dev, mac_addr, &params);
4397
4398         if (params.vlan)
4399                 dev_put(params.vlan);
4400         return err;
4401 }
4402
4403 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4404 {
4405         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4406         struct net_device *dev = info->user_ptr[1];
4407         struct station_del_parameters params;
4408
4409         memset(&params, 0, sizeof(params));
4410
4411         if (info->attrs[NL80211_ATTR_MAC])
4412                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4413
4414         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4415             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4416             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4417             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4418                 return -EINVAL;
4419
4420         if (!rdev->ops->del_station)
4421                 return -EOPNOTSUPP;
4422
4423         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4424                 params.subtype =
4425                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4426                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4427                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4428                         return -EINVAL;
4429         } else {
4430                 /* Default to Deauthentication frame */
4431                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4432         }
4433
4434         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4435                 params.reason_code =
4436                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4437                 if (params.reason_code == 0)
4438                         return -EINVAL; /* 0 is reserved */
4439         } else {
4440                 /* Default to reason code 2 */
4441                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4442         }
4443
4444         return rdev_del_station(rdev, dev, &params);
4445 }
4446
4447 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4448                                 int flags, struct net_device *dev,
4449                                 u8 *dst, u8 *next_hop,
4450                                 struct mpath_info *pinfo)
4451 {
4452         void *hdr;
4453         struct nlattr *pinfoattr;
4454
4455         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION);
4456         if (!hdr)
4457                 return -1;
4458
4459         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4460             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4461             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4462             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4463                 goto nla_put_failure;
4464
4465         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4466         if (!pinfoattr)
4467                 goto nla_put_failure;
4468         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4469             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4470                         pinfo->frame_qlen))
4471                 goto nla_put_failure;
4472         if (((pinfo->filled & MPATH_INFO_SN) &&
4473              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4474             ((pinfo->filled & MPATH_INFO_METRIC) &&
4475              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4476                          pinfo->metric)) ||
4477             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4478              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4479                          pinfo->exptime)) ||
4480             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4481              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4482                         pinfo->flags)) ||
4483             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4484              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4485                          pinfo->discovery_timeout)) ||
4486             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4487              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4488                         pinfo->discovery_retries)))
4489                 goto nla_put_failure;
4490
4491         nla_nest_end(msg, pinfoattr);
4492
4493         return genlmsg_end(msg, hdr);
4494
4495  nla_put_failure:
4496         genlmsg_cancel(msg, hdr);
4497         return -EMSGSIZE;
4498 }
4499
4500 static int nl80211_dump_mpath(struct sk_buff *skb,
4501                               struct netlink_callback *cb)
4502 {
4503         struct mpath_info pinfo;
4504         struct cfg80211_registered_device *rdev;
4505         struct wireless_dev *wdev;
4506         u8 dst[ETH_ALEN];
4507         u8 next_hop[ETH_ALEN];
4508         int path_idx = cb->args[2];
4509         int err;
4510
4511         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4512         if (err)
4513                 return err;
4514
4515         if (!rdev->ops->dump_mpath) {
4516                 err = -EOPNOTSUPP;
4517                 goto out_err;
4518         }
4519
4520         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4521                 err = -EOPNOTSUPP;
4522                 goto out_err;
4523         }
4524
4525         while (1) {
4526                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4527                                       next_hop, &pinfo);
4528                 if (err == -ENOENT)
4529                         break;
4530                 if (err)
4531                         goto out_err;
4532
4533                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4534                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4535                                        wdev->netdev, dst, next_hop,
4536                                        &pinfo) < 0)
4537                         goto out;
4538
4539                 path_idx++;
4540         }
4541
4542
4543  out:
4544         cb->args[2] = path_idx;
4545         err = skb->len;
4546  out_err:
4547         nl80211_finish_wdev_dump(rdev);
4548         return err;
4549 }
4550
4551 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4552 {
4553         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4554         int err;
4555         struct net_device *dev = info->user_ptr[1];
4556         struct mpath_info pinfo;
4557         struct sk_buff *msg;
4558         u8 *dst = NULL;
4559         u8 next_hop[ETH_ALEN];
4560
4561         memset(&pinfo, 0, sizeof(pinfo));
4562
4563         if (!info->attrs[NL80211_ATTR_MAC])
4564                 return -EINVAL;
4565
4566         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4567
4568         if (!rdev->ops->get_mpath)
4569                 return -EOPNOTSUPP;
4570
4571         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4572                 return -EOPNOTSUPP;
4573
4574         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4575         if (err)
4576                 return err;
4577
4578         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4579         if (!msg)
4580                 return -ENOMEM;
4581
4582         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4583                                  dev, dst, next_hop, &pinfo) < 0) {
4584                 nlmsg_free(msg);
4585                 return -ENOBUFS;
4586         }
4587
4588         return genlmsg_reply(msg, info);
4589 }
4590
4591 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4592 {
4593         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4594         struct net_device *dev = info->user_ptr[1];
4595         u8 *dst = NULL;
4596         u8 *next_hop = NULL;
4597
4598         if (!info->attrs[NL80211_ATTR_MAC])
4599                 return -EINVAL;
4600
4601         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4602                 return -EINVAL;
4603
4604         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4605         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4606
4607         if (!rdev->ops->change_mpath)
4608                 return -EOPNOTSUPP;
4609
4610         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4611                 return -EOPNOTSUPP;
4612
4613         return rdev_change_mpath(rdev, dev, dst, next_hop);
4614 }
4615
4616 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4617 {
4618         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4619         struct net_device *dev = info->user_ptr[1];
4620         u8 *dst = NULL;
4621         u8 *next_hop = NULL;
4622
4623         if (!info->attrs[NL80211_ATTR_MAC])
4624                 return -EINVAL;
4625
4626         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4627                 return -EINVAL;
4628
4629         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4630         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4631
4632         if (!rdev->ops->add_mpath)
4633                 return -EOPNOTSUPP;
4634
4635         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4636                 return -EOPNOTSUPP;
4637
4638         return rdev_add_mpath(rdev, dev, dst, next_hop);
4639 }
4640
4641 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4642 {
4643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4644         struct net_device *dev = info->user_ptr[1];
4645         u8 *dst = NULL;
4646
4647         if (info->attrs[NL80211_ATTR_MAC])
4648                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4649
4650         if (!rdev->ops->del_mpath)
4651                 return -EOPNOTSUPP;
4652
4653         return rdev_del_mpath(rdev, dev, dst);
4654 }
4655
4656 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4657 {
4658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4659         int err;
4660         struct net_device *dev = info->user_ptr[1];
4661         struct mpath_info pinfo;
4662         struct sk_buff *msg;
4663         u8 *dst = NULL;
4664         u8 mpp[ETH_ALEN];
4665
4666         memset(&pinfo, 0, sizeof(pinfo));
4667
4668         if (!info->attrs[NL80211_ATTR_MAC])
4669                 return -EINVAL;
4670
4671         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4672
4673         if (!rdev->ops->get_mpp)
4674                 return -EOPNOTSUPP;
4675
4676         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4677                 return -EOPNOTSUPP;
4678
4679         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4680         if (err)
4681                 return err;
4682
4683         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4684         if (!msg)
4685                 return -ENOMEM;
4686
4687         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4688                                dev, dst, mpp, &pinfo) < 0) {
4689                 nlmsg_free(msg);
4690                 return -ENOBUFS;
4691         }
4692
4693         return genlmsg_reply(msg, info);
4694 }
4695
4696 static int nl80211_dump_mpp(struct sk_buff *skb,
4697                             struct netlink_callback *cb)
4698 {
4699         struct mpath_info pinfo;
4700         struct cfg80211_registered_device *rdev;
4701         struct wireless_dev *wdev;
4702         u8 dst[ETH_ALEN];
4703         u8 mpp[ETH_ALEN];
4704         int path_idx = cb->args[2];
4705         int err;
4706
4707         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4708         if (err)
4709                 return err;
4710
4711         if (!rdev->ops->dump_mpp) {
4712                 err = -EOPNOTSUPP;
4713                 goto out_err;
4714         }
4715
4716         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4717                 err = -EOPNOTSUPP;
4718                 goto out_err;
4719         }
4720
4721         while (1) {
4722                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4723                                     mpp, &pinfo);
4724                 if (err == -ENOENT)
4725                         break;
4726                 if (err)
4727                         goto out_err;
4728
4729                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4730                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4731                                        wdev->netdev, dst, mpp,
4732                                        &pinfo) < 0)
4733                         goto out;
4734
4735                 path_idx++;
4736         }
4737
4738  out:
4739         cb->args[2] = path_idx;
4740         err = skb->len;
4741  out_err:
4742         nl80211_finish_wdev_dump(rdev);
4743         return err;
4744 }
4745
4746 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4747 {
4748         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4749         struct net_device *dev = info->user_ptr[1];
4750         struct wireless_dev *wdev = dev->ieee80211_ptr;
4751         struct bss_parameters params;
4752         int err;
4753
4754         memset(&params, 0, sizeof(params));
4755         /* default to not changing parameters */
4756         params.use_cts_prot = -1;
4757         params.use_short_preamble = -1;
4758         params.use_short_slot_time = -1;
4759         params.ap_isolate = -1;
4760         params.ht_opmode = -1;
4761         params.p2p_ctwindow = -1;
4762         params.p2p_opp_ps = -1;
4763
4764         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4765                 params.use_cts_prot =
4766                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4767         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4768                 params.use_short_preamble =
4769                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4770         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4771                 params.use_short_slot_time =
4772                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4773         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4774                 params.basic_rates =
4775                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4776                 params.basic_rates_len =
4777                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4778         }
4779         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4780                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4781         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4782                 params.ht_opmode =
4783                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4784
4785         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4786                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4787                         return -EINVAL;
4788                 params.p2p_ctwindow =
4789                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4790                 if (params.p2p_ctwindow < 0)
4791                         return -EINVAL;
4792                 if (params.p2p_ctwindow != 0 &&
4793                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4794                         return -EINVAL;
4795         }
4796
4797         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4798                 u8 tmp;
4799
4800                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4801                         return -EINVAL;
4802                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4803                 if (tmp > 1)
4804                         return -EINVAL;
4805                 params.p2p_opp_ps = tmp;
4806                 if (params.p2p_opp_ps &&
4807                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4808                         return -EINVAL;
4809         }
4810
4811         if (!rdev->ops->change_bss)
4812                 return -EOPNOTSUPP;
4813
4814         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4815             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4816                 return -EOPNOTSUPP;
4817
4818         wdev_lock(wdev);
4819         err = rdev_change_bss(rdev, dev, &params);
4820         wdev_unlock(wdev);
4821
4822         return err;
4823 }
4824
4825 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4826         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4827         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4828         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4829         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4830         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4831         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4832         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4833 };
4834
4835 static int parse_reg_rule(struct nlattr *tb[],
4836         struct ieee80211_reg_rule *reg_rule)
4837 {
4838         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4839         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4840
4841         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4842                 return -EINVAL;
4843         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4844                 return -EINVAL;
4845         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4846                 return -EINVAL;
4847         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4848                 return -EINVAL;
4849         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4850                 return -EINVAL;
4851
4852         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4853
4854         freq_range->start_freq_khz =
4855                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4856         freq_range->end_freq_khz =
4857                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4858         freq_range->max_bandwidth_khz =
4859                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4860
4861         power_rule->max_eirp =
4862                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4863
4864         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4865                 power_rule->max_antenna_gain =
4866                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4867
4868         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4869                 reg_rule->dfs_cac_ms =
4870                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4871
4872         return 0;
4873 }
4874
4875 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4876 {
4877         char *data = NULL;
4878         enum nl80211_user_reg_hint_type user_reg_hint_type;
4879
4880         /*
4881          * You should only get this when cfg80211 hasn't yet initialized
4882          * completely when built-in to the kernel right between the time
4883          * window between nl80211_init() and regulatory_init(), if that is
4884          * even possible.
4885          */
4886         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4887                 return -EINPROGRESS;
4888
4889         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4890                 user_reg_hint_type =
4891                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4892         else
4893                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4894
4895         switch (user_reg_hint_type) {
4896         case NL80211_USER_REG_HINT_USER:
4897         case NL80211_USER_REG_HINT_CELL_BASE:
4898                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4899                         return -EINVAL;
4900
4901                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4902                 return regulatory_hint_user(data, user_reg_hint_type);
4903         case NL80211_USER_REG_HINT_INDOOR:
4904                 return regulatory_hint_indoor_user();
4905         default:
4906                 return -EINVAL;
4907         }
4908 }
4909
4910 static int nl80211_get_mesh_config(struct sk_buff *skb,
4911                                    struct genl_info *info)
4912 {
4913         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4914         struct net_device *dev = info->user_ptr[1];
4915         struct wireless_dev *wdev = dev->ieee80211_ptr;
4916         struct mesh_config cur_params;
4917         int err = 0;
4918         void *hdr;
4919         struct nlattr *pinfoattr;
4920         struct sk_buff *msg;
4921
4922         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4923                 return -EOPNOTSUPP;
4924
4925         if (!rdev->ops->get_mesh_config)
4926                 return -EOPNOTSUPP;
4927
4928         wdev_lock(wdev);
4929         /* If not connected, get default parameters */
4930         if (!wdev->mesh_id_len)
4931                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4932         else
4933                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4934         wdev_unlock(wdev);
4935
4936         if (err)
4937                 return err;
4938
4939         /* Draw up a netlink message to send back */
4940         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4941         if (!msg)
4942                 return -ENOMEM;
4943         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4944                              NL80211_CMD_GET_MESH_CONFIG);
4945         if (!hdr)
4946                 goto out;
4947         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4948         if (!pinfoattr)
4949                 goto nla_put_failure;
4950         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4951             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4952                         cur_params.dot11MeshRetryTimeout) ||
4953             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4954                         cur_params.dot11MeshConfirmTimeout) ||
4955             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4956                         cur_params.dot11MeshHoldingTimeout) ||
4957             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4958                         cur_params.dot11MeshMaxPeerLinks) ||
4959             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4960                        cur_params.dot11MeshMaxRetries) ||
4961             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4962                        cur_params.dot11MeshTTL) ||
4963             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4964                        cur_params.element_ttl) ||
4965             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4966                        cur_params.auto_open_plinks) ||
4967             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4968                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4969             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4970                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4971             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4972                         cur_params.path_refresh_time) ||
4973             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4974                         cur_params.min_discovery_timeout) ||
4975             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4976                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4977             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4978                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4979             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4980                         cur_params.dot11MeshHWMPperrMinInterval) ||
4981             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4982                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
4983             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
4984                        cur_params.dot11MeshHWMPRootMode) ||
4985             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
4986                         cur_params.dot11MeshHWMPRannInterval) ||
4987             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
4988                        cur_params.dot11MeshGateAnnouncementProtocol) ||
4989             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
4990                        cur_params.dot11MeshForwarding) ||
4991             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
4992                         cur_params.rssi_threshold) ||
4993             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
4994                         cur_params.ht_opmode) ||
4995             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
4996                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
4997             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
4998                         cur_params.dot11MeshHWMProotInterval) ||
4999             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5000                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5001             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5002                         cur_params.power_mode) ||
5003             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5004                         cur_params.dot11MeshAwakeWindowDuration) ||
5005             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5006                         cur_params.plink_timeout))
5007                 goto nla_put_failure;
5008         nla_nest_end(msg, pinfoattr);
5009         genlmsg_end(msg, hdr);
5010         return genlmsg_reply(msg, info);
5011
5012  nla_put_failure:
5013         genlmsg_cancel(msg, hdr);
5014  out:
5015         nlmsg_free(msg);
5016         return -ENOBUFS;
5017 }
5018
5019 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5020         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5021         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5022         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5023         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5024         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5025         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5026         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5027         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5028         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5029         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5030         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5031         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5032         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5033         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5034         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5035         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5036         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5037         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5038         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5039         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5040         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5041         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5042         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5043         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5044         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5045         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5046         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5047         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5048 };
5049
5050 static const struct nla_policy
5051         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5052         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5053         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5054         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5055         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5056         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5057         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5058         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5059                                     .len = IEEE80211_MAX_DATA_LEN },
5060         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5061 };
5062
5063 static int nl80211_parse_mesh_config(struct genl_info *info,
5064                                      struct mesh_config *cfg,
5065                                      u32 *mask_out)
5066 {
5067         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5068         u32 mask = 0;
5069
5070 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5071 do {                                                                        \
5072         if (tb[attr]) {                                                     \
5073                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5074                         return -EINVAL;                                     \
5075                 cfg->param = fn(tb[attr]);                                  \
5076                 mask |= (1 << (attr - 1));                                  \
5077         }                                                                   \
5078 } while (0)
5079
5080
5081         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5082                 return -EINVAL;
5083         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5084                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5085                              nl80211_meshconf_params_policy))
5086                 return -EINVAL;
5087
5088         /* This makes sure that there aren't more than 32 mesh config
5089          * parameters (otherwise our bitfield scheme would not work.) */
5090         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5091
5092         /* Fill in the params struct */
5093         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5094                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5095                                   nla_get_u16);
5096         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5097                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5098                                   nla_get_u16);
5099         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5100                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5101                                   nla_get_u16);
5102         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5103                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5104                                   nla_get_u16);
5105         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5106                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5107                                   nla_get_u8);
5108         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5109                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5110         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5111                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5112                                   nla_get_u8);
5113         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5114                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5115                                   nla_get_u8);
5116         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5117                                   1, 255, mask,
5118                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5119                                   nla_get_u32);
5120         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5121                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5122                                   nla_get_u8);
5123         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5124                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5125                                   nla_get_u32);
5126         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5127                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5128                                   nla_get_u16);
5129         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5130                                   1, 65535, mask,
5131                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5132                                   nla_get_u32);
5133         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5134                                   1, 65535, mask,
5135                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5136                                   nla_get_u16);
5137         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5138                                   1, 65535, mask,
5139                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5140                                   nla_get_u16);
5141         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5142                                   dot11MeshHWMPnetDiameterTraversalTime,
5143                                   1, 65535, mask,
5144                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5145                                   nla_get_u16);
5146         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5147                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5148                                   nla_get_u8);
5149         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5150                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5151                                   nla_get_u16);
5152         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5153                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5154                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5155                                   nla_get_u8);
5156         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5157                                   mask, NL80211_MESHCONF_FORWARDING,
5158                                   nla_get_u8);
5159         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5160                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5161                                   nla_get_s32);
5162         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5163                                   mask, NL80211_MESHCONF_HT_OPMODE,
5164                                   nla_get_u16);
5165         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5166                                   1, 65535, mask,
5167                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5168                                   nla_get_u32);
5169         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5170                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5171                                   nla_get_u16);
5172         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5173                                   dot11MeshHWMPconfirmationInterval,
5174                                   1, 65535, mask,
5175                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5176                                   nla_get_u16);
5177         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5178                                   NL80211_MESH_POWER_ACTIVE,
5179                                   NL80211_MESH_POWER_MAX,
5180                                   mask, NL80211_MESHCONF_POWER_MODE,
5181                                   nla_get_u32);
5182         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5183                                   0, 65535, mask,
5184                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5185         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5186                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5187                                   nla_get_u32);
5188         if (mask_out)
5189                 *mask_out = mask;
5190
5191         return 0;
5192
5193 #undef FILL_IN_MESH_PARAM_IF_SET
5194 }
5195
5196 static int nl80211_parse_mesh_setup(struct genl_info *info,
5197                                      struct mesh_setup *setup)
5198 {
5199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5200         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5201
5202         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5203                 return -EINVAL;
5204         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5205                              info->attrs[NL80211_ATTR_MESH_SETUP],
5206                              nl80211_mesh_setup_params_policy))
5207                 return -EINVAL;
5208
5209         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5210                 setup->sync_method =
5211                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5212                  IEEE80211_SYNC_METHOD_VENDOR :
5213                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5214
5215         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5216                 setup->path_sel_proto =
5217                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5218                  IEEE80211_PATH_PROTOCOL_VENDOR :
5219                  IEEE80211_PATH_PROTOCOL_HWMP;
5220
5221         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5222                 setup->path_metric =
5223                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5224                  IEEE80211_PATH_METRIC_VENDOR :
5225                  IEEE80211_PATH_METRIC_AIRTIME;
5226
5227
5228         if (tb[NL80211_MESH_SETUP_IE]) {
5229                 struct nlattr *ieattr =
5230                         tb[NL80211_MESH_SETUP_IE];
5231                 if (!is_valid_ie_attr(ieattr))
5232                         return -EINVAL;
5233                 setup->ie = nla_data(ieattr);
5234                 setup->ie_len = nla_len(ieattr);
5235         }
5236         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5237             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5238                 return -EINVAL;
5239         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5240         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5241         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5242         if (setup->is_secure)
5243                 setup->user_mpm = true;
5244
5245         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5246                 if (!setup->user_mpm)
5247                         return -EINVAL;
5248                 setup->auth_id =
5249                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5250         }
5251
5252         return 0;
5253 }
5254
5255 static int nl80211_update_mesh_config(struct sk_buff *skb,
5256                                       struct genl_info *info)
5257 {
5258         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5259         struct net_device *dev = info->user_ptr[1];
5260         struct wireless_dev *wdev = dev->ieee80211_ptr;
5261         struct mesh_config cfg;
5262         u32 mask;
5263         int err;
5264
5265         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5266                 return -EOPNOTSUPP;
5267
5268         if (!rdev->ops->update_mesh_config)
5269                 return -EOPNOTSUPP;
5270
5271         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5272         if (err)
5273                 return err;
5274
5275         wdev_lock(wdev);
5276         if (!wdev->mesh_id_len)
5277                 err = -ENOLINK;
5278
5279         if (!err)
5280                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5281
5282         wdev_unlock(wdev);
5283
5284         return err;
5285 }
5286
5287 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
5288 {
5289         const struct ieee80211_regdomain *regdom;
5290         struct sk_buff *msg;
5291         void *hdr = NULL;
5292         struct nlattr *nl_reg_rules;
5293         unsigned int i;
5294
5295         if (!cfg80211_regdomain)
5296                 return -EINVAL;
5297
5298         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5299         if (!msg)
5300                 return -ENOBUFS;
5301
5302         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5303                              NL80211_CMD_GET_REG);
5304         if (!hdr)
5305                 goto put_failure;
5306
5307         if (reg_last_request_cell_base() &&
5308             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5309                         NL80211_USER_REG_HINT_CELL_BASE))
5310                 goto nla_put_failure;
5311
5312         rcu_read_lock();
5313         regdom = rcu_dereference(cfg80211_regdomain);
5314
5315         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5316             (regdom->dfs_region &&
5317              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5318                 goto nla_put_failure_rcu;
5319
5320         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5321         if (!nl_reg_rules)
5322                 goto nla_put_failure_rcu;
5323
5324         for (i = 0; i < regdom->n_reg_rules; i++) {
5325                 struct nlattr *nl_reg_rule;
5326                 const struct ieee80211_reg_rule *reg_rule;
5327                 const struct ieee80211_freq_range *freq_range;
5328                 const struct ieee80211_power_rule *power_rule;
5329                 unsigned int max_bandwidth_khz;
5330
5331                 reg_rule = &regdom->reg_rules[i];
5332                 freq_range = &reg_rule->freq_range;
5333                 power_rule = &reg_rule->power_rule;
5334
5335                 nl_reg_rule = nla_nest_start(msg, i);
5336                 if (!nl_reg_rule)
5337                         goto nla_put_failure_rcu;
5338
5339                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5340                 if (!max_bandwidth_khz)
5341                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5342                                                                   reg_rule);
5343
5344                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5345                                 reg_rule->flags) ||
5346                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5347                                 freq_range->start_freq_khz) ||
5348                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5349                                 freq_range->end_freq_khz) ||
5350                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5351                                 max_bandwidth_khz) ||
5352                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5353                                 power_rule->max_antenna_gain) ||
5354                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5355                                 power_rule->max_eirp) ||
5356                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5357                                 reg_rule->dfs_cac_ms))
5358                         goto nla_put_failure_rcu;
5359
5360                 nla_nest_end(msg, nl_reg_rule);
5361         }
5362         rcu_read_unlock();
5363
5364         nla_nest_end(msg, nl_reg_rules);
5365
5366         genlmsg_end(msg, hdr);
5367         return genlmsg_reply(msg, info);
5368
5369 nla_put_failure_rcu:
5370         rcu_read_unlock();
5371 nla_put_failure:
5372         genlmsg_cancel(msg, hdr);
5373 put_failure:
5374         nlmsg_free(msg);
5375         return -EMSGSIZE;
5376 }
5377
5378 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5379 {
5380         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5381         struct nlattr *nl_reg_rule;
5382         char *alpha2 = NULL;
5383         int rem_reg_rules = 0, r = 0;
5384         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5385         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5386         struct ieee80211_regdomain *rd = NULL;
5387
5388         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5389                 return -EINVAL;
5390
5391         if (!info->attrs[NL80211_ATTR_REG_RULES])
5392                 return -EINVAL;
5393
5394         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5395
5396         if (info->attrs[NL80211_ATTR_DFS_REGION])
5397                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5398
5399         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5400                             rem_reg_rules) {
5401                 num_rules++;
5402                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5403                         return -EINVAL;
5404         }
5405
5406         if (!reg_is_valid_request(alpha2))
5407                 return -EINVAL;
5408
5409         size_of_regd = sizeof(struct ieee80211_regdomain) +
5410                        num_rules * sizeof(struct ieee80211_reg_rule);
5411
5412         rd = kzalloc(size_of_regd, GFP_KERNEL);
5413         if (!rd)
5414                 return -ENOMEM;
5415
5416         rd->n_reg_rules = num_rules;
5417         rd->alpha2[0] = alpha2[0];
5418         rd->alpha2[1] = alpha2[1];
5419
5420         /*
5421          * Disable DFS master mode if the DFS region was
5422          * not supported or known on this kernel.
5423          */
5424         if (reg_supported_dfs_region(dfs_region))
5425                 rd->dfs_region = dfs_region;
5426
5427         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5428                             rem_reg_rules) {
5429                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5430                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5431                               reg_rule_policy);
5432                 if (r)
5433                         goto bad_reg;
5434                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5435                 if (r)
5436                         goto bad_reg;
5437
5438                 rule_idx++;
5439
5440                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5441                         r = -EINVAL;
5442                         goto bad_reg;
5443                 }
5444         }
5445
5446         r = set_regdom(rd);
5447         /* set_regdom took ownership */
5448         rd = NULL;
5449
5450  bad_reg:
5451         kfree(rd);
5452         return r;
5453 }
5454
5455 static int validate_scan_freqs(struct nlattr *freqs)
5456 {
5457         struct nlattr *attr1, *attr2;
5458         int n_channels = 0, tmp1, tmp2;
5459
5460         nla_for_each_nested(attr1, freqs, tmp1) {
5461                 n_channels++;
5462                 /*
5463                  * Some hardware has a limited channel list for
5464                  * scanning, and it is pretty much nonsensical
5465                  * to scan for a channel twice, so disallow that
5466                  * and don't require drivers to check that the
5467                  * channel list they get isn't longer than what
5468                  * they can scan, as long as they can scan all
5469                  * the channels they registered at once.
5470                  */
5471                 nla_for_each_nested(attr2, freqs, tmp2)
5472                         if (attr1 != attr2 &&
5473                             nla_get_u32(attr1) == nla_get_u32(attr2))
5474                                 return 0;
5475         }
5476
5477         return n_channels;
5478 }
5479
5480 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5481 {
5482         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5483         struct wireless_dev *wdev = info->user_ptr[1];
5484         struct cfg80211_scan_request *request;
5485         struct nlattr *attr;
5486         struct wiphy *wiphy;
5487         int err, tmp, n_ssids = 0, n_channels, i;
5488         size_t ie_len;
5489
5490         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5491                 return -EINVAL;
5492
5493         wiphy = &rdev->wiphy;
5494
5495         if (!rdev->ops->scan)
5496                 return -EOPNOTSUPP;
5497
5498         if (rdev->scan_req || rdev->scan_msg) {
5499                 err = -EBUSY;
5500                 goto unlock;
5501         }
5502
5503         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5504                 n_channels = validate_scan_freqs(
5505                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5506                 if (!n_channels) {
5507                         err = -EINVAL;
5508                         goto unlock;
5509                 }
5510         } else {
5511                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5512         }
5513
5514         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5515                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5516                         n_ssids++;
5517
5518         if (n_ssids > wiphy->max_scan_ssids) {
5519                 err = -EINVAL;
5520                 goto unlock;
5521         }
5522
5523         if (info->attrs[NL80211_ATTR_IE])
5524                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5525         else
5526                 ie_len = 0;
5527
5528         if (ie_len > wiphy->max_scan_ie_len) {
5529                 err = -EINVAL;
5530                 goto unlock;
5531         }
5532
5533         request = kzalloc(sizeof(*request)
5534                         + sizeof(*request->ssids) * n_ssids
5535                         + sizeof(*request->channels) * n_channels
5536                         + ie_len, GFP_KERNEL);
5537         if (!request) {
5538                 err = -ENOMEM;
5539                 goto unlock;
5540         }
5541
5542         if (n_ssids)
5543                 request->ssids = (void *)&request->channels[n_channels];
5544         request->n_ssids = n_ssids;
5545         if (ie_len) {
5546                 if (request->ssids)
5547                         request->ie = (void *)(request->ssids + n_ssids);
5548                 else
5549                         request->ie = (void *)(request->channels + n_channels);
5550         }
5551
5552         i = 0;
5553         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5554                 /* user specified, bail out if channel not found */
5555                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5556                         struct ieee80211_channel *chan;
5557
5558                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5559
5560                         if (!chan) {
5561                                 err = -EINVAL;
5562                                 goto out_free;
5563                         }
5564
5565                         /* ignore disabled channels */
5566                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5567                                 continue;
5568
5569                         request->channels[i] = chan;
5570                         i++;
5571                 }
5572         } else {
5573                 enum ieee80211_band band;
5574
5575                 /* all channels */
5576                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5577                         int j;
5578                         if (!wiphy->bands[band])
5579                                 continue;
5580                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5581                                 struct ieee80211_channel *chan;
5582
5583                                 chan = &wiphy->bands[band]->channels[j];
5584
5585                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5586                                         continue;
5587
5588                                 request->channels[i] = chan;
5589                                 i++;
5590                         }
5591                 }
5592         }
5593
5594         if (!i) {
5595                 err = -EINVAL;
5596                 goto out_free;
5597         }
5598
5599         request->n_channels = i;
5600
5601         i = 0;
5602         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5603                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5604                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5605                                 err = -EINVAL;
5606                                 goto out_free;
5607                         }
5608                         request->ssids[i].ssid_len = nla_len(attr);
5609                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5610                         i++;
5611                 }
5612         }
5613
5614         if (info->attrs[NL80211_ATTR_IE]) {
5615                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5616                 memcpy((void *)request->ie,
5617                        nla_data(info->attrs[NL80211_ATTR_IE]),
5618                        request->ie_len);
5619         }
5620
5621         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5622                 if (wiphy->bands[i])
5623                         request->rates[i] =
5624                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5625
5626         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5627                 nla_for_each_nested(attr,
5628                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5629                                     tmp) {
5630                         enum ieee80211_band band = nla_type(attr);
5631
5632                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5633                                 err = -EINVAL;
5634                                 goto out_free;
5635                         }
5636
5637                         if (!wiphy->bands[band])
5638                                 continue;
5639
5640                         err = ieee80211_get_ratemask(wiphy->bands[band],
5641                                                      nla_data(attr),
5642                                                      nla_len(attr),
5643                                                      &request->rates[band]);
5644                         if (err)
5645                                 goto out_free;
5646                 }
5647         }
5648
5649         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5650                 request->flags = nla_get_u32(
5651                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5652                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5653                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5654                         err = -EOPNOTSUPP;
5655                         goto out_free;
5656                 }
5657         }
5658
5659         request->no_cck =
5660                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5661
5662         request->wdev = wdev;
5663         request->wiphy = &rdev->wiphy;
5664         request->scan_start = jiffies;
5665
5666         rdev->scan_req = request;
5667         err = rdev_scan(rdev, request);
5668
5669         if (!err) {
5670                 nl80211_send_scan_start(rdev, wdev);
5671                 if (wdev->netdev)
5672                         dev_hold(wdev->netdev);
5673         } else {
5674  out_free:
5675                 rdev->scan_req = NULL;
5676                 kfree(request);
5677         }
5678
5679  unlock:
5680         return err;
5681 }
5682
5683 static int nl80211_start_sched_scan(struct sk_buff *skb,
5684                                     struct genl_info *info)
5685 {
5686         struct cfg80211_sched_scan_request *request;
5687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5688         struct net_device *dev = info->user_ptr[1];
5689         struct nlattr *attr;
5690         struct wiphy *wiphy;
5691         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5692         u32 interval;
5693         enum ieee80211_band band;
5694         size_t ie_len;
5695         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5696         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5697
5698         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5699             !rdev->ops->sched_scan_start)
5700                 return -EOPNOTSUPP;
5701
5702         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5703                 return -EINVAL;
5704
5705         if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5706                 return -EINVAL;
5707
5708         interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5709         if (interval == 0)
5710                 return -EINVAL;
5711
5712         wiphy = &rdev->wiphy;
5713
5714         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5715                 n_channels = validate_scan_freqs(
5716                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5717                 if (!n_channels)
5718                         return -EINVAL;
5719         } else {
5720                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5721         }
5722
5723         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5724                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5725                                     tmp)
5726                         n_ssids++;
5727
5728         if (n_ssids > wiphy->max_sched_scan_ssids)
5729                 return -EINVAL;
5730
5731         /*
5732          * First, count the number of 'real' matchsets. Due to an issue with
5733          * the old implementation, matchsets containing only the RSSI attribute
5734          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5735          * RSSI for all matchsets, rather than their own matchset for reporting
5736          * all APs with a strong RSSI. This is needed to be compatible with
5737          * older userspace that treated a matchset with only the RSSI as the
5738          * global RSSI for all other matchsets - if there are other matchsets.
5739          */
5740         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5741                 nla_for_each_nested(attr,
5742                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5743                                     tmp) {
5744                         struct nlattr *rssi;
5745
5746                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5747                                         nla_data(attr), nla_len(attr),
5748                                         nl80211_match_policy);
5749                         if (err)
5750                                 return err;
5751                         /* add other standalone attributes here */
5752                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5753                                 n_match_sets++;
5754                                 continue;
5755                         }
5756                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5757                         if (rssi)
5758                                 default_match_rssi = nla_get_s32(rssi);
5759                 }
5760         }
5761
5762         /* However, if there's no other matchset, add the RSSI one */
5763         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5764                 n_match_sets = 1;
5765
5766         if (n_match_sets > wiphy->max_match_sets)
5767                 return -EINVAL;
5768
5769         if (info->attrs[NL80211_ATTR_IE])
5770                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5771         else
5772                 ie_len = 0;
5773
5774         if (ie_len > wiphy->max_sched_scan_ie_len)
5775                 return -EINVAL;
5776
5777         if (rdev->sched_scan_req) {
5778                 err = -EINPROGRESS;
5779                 goto out;
5780         }
5781
5782         request = kzalloc(sizeof(*request)
5783                         + sizeof(*request->ssids) * n_ssids
5784                         + sizeof(*request->match_sets) * n_match_sets
5785                         + sizeof(*request->channels) * n_channels
5786                         + ie_len, GFP_KERNEL);
5787         if (!request) {
5788                 err = -ENOMEM;
5789                 goto out;
5790         }
5791
5792         if (n_ssids)
5793                 request->ssids = (void *)&request->channels[n_channels];
5794         request->n_ssids = n_ssids;
5795         if (ie_len) {
5796                 if (request->ssids)
5797                         request->ie = (void *)(request->ssids + n_ssids);
5798                 else
5799                         request->ie = (void *)(request->channels + n_channels);
5800         }
5801
5802         if (n_match_sets) {
5803                 if (request->ie)
5804                         request->match_sets = (void *)(request->ie + ie_len);
5805                 else if (request->ssids)
5806                         request->match_sets =
5807                                 (void *)(request->ssids + n_ssids);
5808                 else
5809                         request->match_sets =
5810                                 (void *)(request->channels + n_channels);
5811         }
5812         request->n_match_sets = n_match_sets;
5813
5814         i = 0;
5815         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5816                 /* user specified, bail out if channel not found */
5817                 nla_for_each_nested(attr,
5818                                     info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5819                                     tmp) {
5820                         struct ieee80211_channel *chan;
5821
5822                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5823
5824                         if (!chan) {
5825                                 err = -EINVAL;
5826                                 goto out_free;
5827                         }
5828
5829                         /* ignore disabled channels */
5830                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5831                                 continue;
5832
5833                         request->channels[i] = chan;
5834                         i++;
5835                 }
5836         } else {
5837                 /* all channels */
5838                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5839                         int j;
5840                         if (!wiphy->bands[band])
5841                                 continue;
5842                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5843                                 struct ieee80211_channel *chan;
5844
5845                                 chan = &wiphy->bands[band]->channels[j];
5846
5847                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5848                                         continue;
5849
5850                                 request->channels[i] = chan;
5851                                 i++;
5852                         }
5853                 }
5854         }
5855
5856         if (!i) {
5857                 err = -EINVAL;
5858                 goto out_free;
5859         }
5860
5861         request->n_channels = i;
5862
5863         i = 0;
5864         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5865                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
5866                                     tmp) {
5867                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5868                                 err = -EINVAL;
5869                                 goto out_free;
5870                         }
5871                         request->ssids[i].ssid_len = nla_len(attr);
5872                         memcpy(request->ssids[i].ssid, nla_data(attr),
5873                                nla_len(attr));
5874                         i++;
5875                 }
5876         }
5877
5878         i = 0;
5879         if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5880                 nla_for_each_nested(attr,
5881                                     info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5882                                     tmp) {
5883                         struct nlattr *ssid, *rssi;
5884
5885                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5886                                         nla_data(attr), nla_len(attr),
5887                                         nl80211_match_policy);
5888                         if (err)
5889                                 goto out_free;
5890                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
5891                         if (ssid) {
5892                                 if (WARN_ON(i >= n_match_sets)) {
5893                                         /* this indicates a programming error,
5894                                          * the loop above should have verified
5895                                          * things properly
5896                                          */
5897                                         err = -EINVAL;
5898                                         goto out_free;
5899                                 }
5900
5901                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
5902                                         err = -EINVAL;
5903                                         goto out_free;
5904                                 }
5905                                 memcpy(request->match_sets[i].ssid.ssid,
5906                                        nla_data(ssid), nla_len(ssid));
5907                                 request->match_sets[i].ssid.ssid_len =
5908                                         nla_len(ssid);
5909                                 /* special attribute - old implemenation w/a */
5910                                 request->match_sets[i].rssi_thold =
5911                                         default_match_rssi;
5912                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5913                                 if (rssi)
5914                                         request->match_sets[i].rssi_thold =
5915                                                 nla_get_s32(rssi);
5916                         }
5917                         i++;
5918                 }
5919
5920                 /* there was no other matchset, so the RSSI one is alone */
5921                 if (i == 0)
5922                         request->match_sets[0].rssi_thold = default_match_rssi;
5923
5924                 request->min_rssi_thold = INT_MAX;
5925                 for (i = 0; i < n_match_sets; i++)
5926                         request->min_rssi_thold =
5927                                 min(request->match_sets[i].rssi_thold,
5928                                     request->min_rssi_thold);
5929         } else {
5930                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
5931         }
5932
5933         if (ie_len) {
5934                 request->ie_len = ie_len;
5935                 memcpy((void *)request->ie,
5936                        nla_data(info->attrs[NL80211_ATTR_IE]),
5937                        request->ie_len);
5938         }
5939
5940         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5941                 request->flags = nla_get_u32(
5942                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5943                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5944                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5945                         err = -EOPNOTSUPP;
5946                         goto out_free;
5947                 }
5948         }
5949
5950         request->dev = dev;
5951         request->wiphy = &rdev->wiphy;
5952         request->interval = interval;
5953         request->scan_start = jiffies;
5954
5955         err = rdev_sched_scan_start(rdev, dev, request);
5956         if (!err) {
5957                 rdev->sched_scan_req = request;
5958                 nl80211_send_sched_scan(rdev, dev,
5959                                         NL80211_CMD_START_SCHED_SCAN);
5960                 goto out;
5961         }
5962
5963 out_free:
5964         kfree(request);
5965 out:
5966         return err;
5967 }
5968
5969 static int nl80211_stop_sched_scan(struct sk_buff *skb,
5970                                    struct genl_info *info)
5971 {
5972         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5973
5974         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
5975             !rdev->ops->sched_scan_stop)
5976                 return -EOPNOTSUPP;
5977
5978         return __cfg80211_stop_sched_scan(rdev, false);
5979 }
5980
5981 static int nl80211_start_radar_detection(struct sk_buff *skb,
5982                                          struct genl_info *info)
5983 {
5984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5985         struct net_device *dev = info->user_ptr[1];
5986         struct wireless_dev *wdev = dev->ieee80211_ptr;
5987         struct cfg80211_chan_def chandef;
5988         enum nl80211_dfs_regions dfs_region;
5989         unsigned int cac_time_ms;
5990         int err;
5991
5992         dfs_region = reg_get_dfs_region(wdev->wiphy);
5993         if (dfs_region == NL80211_DFS_UNSET)
5994                 return -EINVAL;
5995
5996         err = nl80211_parse_chandef(rdev, info, &chandef);
5997         if (err)
5998                 return err;
5999
6000         if (netif_carrier_ok(dev))
6001                 return -EBUSY;
6002
6003         if (wdev->cac_started)
6004                 return -EBUSY;
6005
6006         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6007                                             wdev->iftype);
6008         if (err < 0)
6009                 return err;
6010
6011         if (err == 0)
6012                 return -EINVAL;
6013
6014         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6015                 return -EINVAL;
6016
6017         if (!rdev->ops->start_radar_detection)
6018                 return -EOPNOTSUPP;
6019
6020         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6021         if (WARN_ON(!cac_time_ms))
6022                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6023
6024         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6025                                                cac_time_ms);
6026         if (!err) {
6027                 wdev->chandef = chandef;
6028                 wdev->cac_started = true;
6029                 wdev->cac_start_time = jiffies;
6030                 wdev->cac_time_ms = cac_time_ms;
6031         }
6032         return err;
6033 }
6034
6035 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6036 {
6037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6038         struct net_device *dev = info->user_ptr[1];
6039         struct wireless_dev *wdev = dev->ieee80211_ptr;
6040         struct cfg80211_csa_settings params;
6041         /* csa_attrs is defined static to avoid waste of stack size - this
6042          * function is called under RTNL lock, so this should not be a problem.
6043          */
6044         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6045         int err;
6046         bool need_new_beacon = false;
6047         int len, i;
6048         u32 cs_count;
6049
6050         if (!rdev->ops->channel_switch ||
6051             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6052                 return -EOPNOTSUPP;
6053
6054         switch (dev->ieee80211_ptr->iftype) {
6055         case NL80211_IFTYPE_AP:
6056         case NL80211_IFTYPE_P2P_GO:
6057                 need_new_beacon = true;
6058
6059                 /* useless if AP is not running */
6060                 if (!wdev->beacon_interval)
6061                         return -ENOTCONN;
6062                 break;
6063         case NL80211_IFTYPE_ADHOC:
6064                 if (!wdev->ssid_len)
6065                         return -ENOTCONN;
6066                 break;
6067         case NL80211_IFTYPE_MESH_POINT:
6068                 if (!wdev->mesh_id_len)
6069                         return -ENOTCONN;
6070                 break;
6071         default:
6072                 return -EOPNOTSUPP;
6073         }
6074
6075         memset(&params, 0, sizeof(params));
6076
6077         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6078             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6079                 return -EINVAL;
6080
6081         /* only important for AP, IBSS and mesh create IEs internally */
6082         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6083                 return -EINVAL;
6084
6085         /* Even though the attribute is u32, the specification says
6086          * u8, so let's make sure we don't overflow.
6087          */
6088         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6089         if (cs_count > 255)
6090                 return -EINVAL;
6091
6092         params.count = cs_count;
6093
6094         if (!need_new_beacon)
6095                 goto skip_beacons;
6096
6097         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6098         if (err)
6099                 return err;
6100
6101         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6102                                info->attrs[NL80211_ATTR_CSA_IES],
6103                                nl80211_policy);
6104         if (err)
6105                 return err;
6106
6107         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6108         if (err)
6109                 return err;
6110
6111         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6112                 return -EINVAL;
6113
6114         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6115         if (!len || (len % sizeof(u16)))
6116                 return -EINVAL;
6117
6118         params.n_counter_offsets_beacon = len / sizeof(u16);
6119         if (rdev->wiphy.max_num_csa_counters &&
6120             (params.n_counter_offsets_beacon >
6121              rdev->wiphy.max_num_csa_counters))
6122                 return -EINVAL;
6123
6124         params.counter_offsets_beacon =
6125                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6126
6127         /* sanity checks - counters should fit and be the same */
6128         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6129                 u16 offset = params.counter_offsets_beacon[i];
6130
6131                 if (offset >= params.beacon_csa.tail_len)
6132                         return -EINVAL;
6133
6134                 if (params.beacon_csa.tail[offset] != params.count)
6135                         return -EINVAL;
6136         }
6137
6138         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6139                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6140                 if (!len || (len % sizeof(u16)))
6141                         return -EINVAL;
6142
6143                 params.n_counter_offsets_presp = len / sizeof(u16);
6144                 if (rdev->wiphy.max_num_csa_counters &&
6145                     (params.n_counter_offsets_beacon >
6146                      rdev->wiphy.max_num_csa_counters))
6147                         return -EINVAL;
6148
6149                 params.counter_offsets_presp =
6150                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6151
6152                 /* sanity checks - counters should fit and be the same */
6153                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6154                         u16 offset = params.counter_offsets_presp[i];
6155
6156                         if (offset >= params.beacon_csa.probe_resp_len)
6157                                 return -EINVAL;
6158
6159                         if (params.beacon_csa.probe_resp[offset] !=
6160                             params.count)
6161                                 return -EINVAL;
6162                 }
6163         }
6164
6165 skip_beacons:
6166         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6167         if (err)
6168                 return err;
6169
6170         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6171                                      wdev->iftype))
6172                 return -EINVAL;
6173
6174         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6175                                             &params.chandef,
6176                                             wdev->iftype);
6177         if (err < 0)
6178                 return err;
6179
6180         if (err > 0)
6181                 params.radar_required = true;
6182
6183         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6184                 params.block_tx = true;
6185
6186         wdev_lock(wdev);
6187         err = rdev_channel_switch(rdev, dev, &params);
6188         wdev_unlock(wdev);
6189
6190         return err;
6191 }
6192
6193 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6194                             u32 seq, int flags,
6195                             struct cfg80211_registered_device *rdev,
6196                             struct wireless_dev *wdev,
6197                             struct cfg80211_internal_bss *intbss)
6198 {
6199         struct cfg80211_bss *res = &intbss->pub;
6200         const struct cfg80211_bss_ies *ies;
6201         void *hdr;
6202         struct nlattr *bss;
6203
6204         ASSERT_WDEV_LOCK(wdev);
6205
6206         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6207                              NL80211_CMD_NEW_SCAN_RESULTS);
6208         if (!hdr)
6209                 return -1;
6210
6211         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6212
6213         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6214                 goto nla_put_failure;
6215         if (wdev->netdev &&
6216             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6217                 goto nla_put_failure;
6218         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6219                 goto nla_put_failure;
6220
6221         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6222         if (!bss)
6223                 goto nla_put_failure;
6224         if ((!is_zero_ether_addr(res->bssid) &&
6225              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6226                 goto nla_put_failure;
6227
6228         rcu_read_lock();
6229         /* indicate whether we have probe response data or not */
6230         if (rcu_access_pointer(res->proberesp_ies) &&
6231             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6232                 goto fail_unlock_rcu;
6233
6234         /* this pointer prefers to be pointed to probe response data
6235          * but is always valid
6236          */
6237         ies = rcu_dereference(res->ies);
6238         if (ies) {
6239                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6240                         goto fail_unlock_rcu;
6241                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6242                                         ies->len, ies->data))
6243                         goto fail_unlock_rcu;
6244         }
6245
6246         /* and this pointer is always (unless driver didn't know) beacon data */
6247         ies = rcu_dereference(res->beacon_ies);
6248         if (ies && ies->from_beacon) {
6249                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6250                         goto fail_unlock_rcu;
6251                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6252                                         ies->len, ies->data))
6253                         goto fail_unlock_rcu;
6254         }
6255         rcu_read_unlock();
6256
6257         if (res->beacon_interval &&
6258             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6259                 goto nla_put_failure;
6260         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6261             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6262             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6263             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6264                         jiffies_to_msecs(jiffies - intbss->ts)))
6265                 goto nla_put_failure;
6266
6267         switch (rdev->wiphy.signal_type) {
6268         case CFG80211_SIGNAL_TYPE_MBM:
6269                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6270                         goto nla_put_failure;
6271                 break;
6272         case CFG80211_SIGNAL_TYPE_UNSPEC:
6273                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6274                         goto nla_put_failure;
6275                 break;
6276         default:
6277                 break;
6278         }
6279
6280         switch (wdev->iftype) {
6281         case NL80211_IFTYPE_P2P_CLIENT:
6282         case NL80211_IFTYPE_STATION:
6283                 if (intbss == wdev->current_bss &&
6284                     nla_put_u32(msg, NL80211_BSS_STATUS,
6285                                 NL80211_BSS_STATUS_ASSOCIATED))
6286                         goto nla_put_failure;
6287                 break;
6288         case NL80211_IFTYPE_ADHOC:
6289                 if (intbss == wdev->current_bss &&
6290                     nla_put_u32(msg, NL80211_BSS_STATUS,
6291                                 NL80211_BSS_STATUS_IBSS_JOINED))
6292                         goto nla_put_failure;
6293                 break;
6294         default:
6295                 break;
6296         }
6297
6298         nla_nest_end(msg, bss);
6299
6300         return genlmsg_end(msg, hdr);
6301
6302  fail_unlock_rcu:
6303         rcu_read_unlock();
6304  nla_put_failure:
6305         genlmsg_cancel(msg, hdr);
6306         return -EMSGSIZE;
6307 }
6308
6309 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6310 {
6311         struct cfg80211_registered_device *rdev;
6312         struct cfg80211_internal_bss *scan;
6313         struct wireless_dev *wdev;
6314         int start = cb->args[2], idx = 0;
6315         int err;
6316
6317         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6318         if (err)
6319                 return err;
6320
6321         wdev_lock(wdev);
6322         spin_lock_bh(&rdev->bss_lock);
6323         cfg80211_bss_expire(rdev);
6324
6325         cb->seq = rdev->bss_generation;
6326
6327         list_for_each_entry(scan, &rdev->bss_list, list) {
6328                 if (++idx <= start)
6329                         continue;
6330                 if (nl80211_send_bss(skb, cb,
6331                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6332                                 rdev, wdev, scan) < 0) {
6333                         idx--;
6334                         break;
6335                 }
6336         }
6337
6338         spin_unlock_bh(&rdev->bss_lock);
6339         wdev_unlock(wdev);
6340
6341         cb->args[2] = idx;
6342         nl80211_finish_wdev_dump(rdev);
6343
6344         return skb->len;
6345 }
6346
6347 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6348                                 int flags, struct net_device *dev,
6349                                 struct survey_info *survey)
6350 {
6351         void *hdr;
6352         struct nlattr *infoattr;
6353
6354         hdr = nl80211hdr_put(msg, portid, seq, flags,
6355                              NL80211_CMD_NEW_SURVEY_RESULTS);
6356         if (!hdr)
6357                 return -ENOMEM;
6358
6359         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6360                 goto nla_put_failure;
6361
6362         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6363         if (!infoattr)
6364                 goto nla_put_failure;
6365
6366         if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6367                         survey->channel->center_freq))
6368                 goto nla_put_failure;
6369
6370         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6371             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6372                 goto nla_put_failure;
6373         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6374             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6375                 goto nla_put_failure;
6376         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) &&
6377             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME,
6378                         survey->channel_time))
6379                 goto nla_put_failure;
6380         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) &&
6381             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY,
6382                         survey->channel_time_busy))
6383                 goto nla_put_failure;
6384         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) &&
6385             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY,
6386                         survey->channel_time_ext_busy))
6387                 goto nla_put_failure;
6388         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) &&
6389             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX,
6390                         survey->channel_time_rx))
6391                 goto nla_put_failure;
6392         if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) &&
6393             nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX,
6394                         survey->channel_time_tx))
6395                 goto nla_put_failure;
6396
6397         nla_nest_end(msg, infoattr);
6398
6399         return genlmsg_end(msg, hdr);
6400
6401  nla_put_failure:
6402         genlmsg_cancel(msg, hdr);
6403         return -EMSGSIZE;
6404 }
6405
6406 static int nl80211_dump_survey(struct sk_buff *skb,
6407                         struct netlink_callback *cb)
6408 {
6409         struct survey_info survey;
6410         struct cfg80211_registered_device *rdev;
6411         struct wireless_dev *wdev;
6412         int survey_idx = cb->args[2];
6413         int res;
6414
6415         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6416         if (res)
6417                 return res;
6418
6419         if (!wdev->netdev) {
6420                 res = -EINVAL;
6421                 goto out_err;
6422         }
6423
6424         if (!rdev->ops->dump_survey) {
6425                 res = -EOPNOTSUPP;
6426                 goto out_err;
6427         }
6428
6429         while (1) {
6430                 struct ieee80211_channel *chan;
6431
6432                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6433                 if (res == -ENOENT)
6434                         break;
6435                 if (res)
6436                         goto out_err;
6437
6438                 /* Survey without a channel doesn't make sense */
6439                 if (!survey.channel) {
6440                         res = -EINVAL;
6441                         goto out;
6442                 }
6443
6444                 chan = ieee80211_get_channel(&rdev->wiphy,
6445                                              survey.channel->center_freq);
6446                 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
6447                         survey_idx++;
6448                         continue;
6449                 }
6450
6451                 if (nl80211_send_survey(skb,
6452                                 NETLINK_CB(cb->skb).portid,
6453                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6454                                 wdev->netdev, &survey) < 0)
6455                         goto out;
6456                 survey_idx++;
6457         }
6458
6459  out:
6460         cb->args[2] = survey_idx;
6461         res = skb->len;
6462  out_err:
6463         nl80211_finish_wdev_dump(rdev);
6464         return res;
6465 }
6466
6467 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6468 {
6469         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6470                                   NL80211_WPA_VERSION_2));
6471 }
6472
6473 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6474 {
6475         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6476         struct net_device *dev = info->user_ptr[1];
6477         struct ieee80211_channel *chan;
6478         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6479         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6480         enum nl80211_auth_type auth_type;
6481         struct key_parse key;
6482         bool local_state_change;
6483
6484         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6485                 return -EINVAL;
6486
6487         if (!info->attrs[NL80211_ATTR_MAC])
6488                 return -EINVAL;
6489
6490         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6491                 return -EINVAL;
6492
6493         if (!info->attrs[NL80211_ATTR_SSID])
6494                 return -EINVAL;
6495
6496         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6497                 return -EINVAL;
6498
6499         err = nl80211_parse_key(info, &key);
6500         if (err)
6501                 return err;
6502
6503         if (key.idx >= 0) {
6504                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6505                         return -EINVAL;
6506                 if (!key.p.key || !key.p.key_len)
6507                         return -EINVAL;
6508                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6509                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6510                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6511                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6512                         return -EINVAL;
6513                 if (key.idx > 4)
6514                         return -EINVAL;
6515         } else {
6516                 key.p.key_len = 0;
6517                 key.p.key = NULL;
6518         }
6519
6520         if (key.idx >= 0) {
6521                 int i;
6522                 bool ok = false;
6523                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6524                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6525                                 ok = true;
6526                                 break;
6527                         }
6528                 }
6529                 if (!ok)
6530                         return -EINVAL;
6531         }
6532
6533         if (!rdev->ops->auth)
6534                 return -EOPNOTSUPP;
6535
6536         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6537             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6538                 return -EOPNOTSUPP;
6539
6540         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6541         chan = nl80211_get_valid_chan(&rdev->wiphy,
6542                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6543         if (!chan)
6544                 return -EINVAL;
6545
6546         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6547         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6548
6549         if (info->attrs[NL80211_ATTR_IE]) {
6550                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6551                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6552         }
6553
6554         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6555         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6556                 return -EINVAL;
6557
6558         if (auth_type == NL80211_AUTHTYPE_SAE &&
6559             !info->attrs[NL80211_ATTR_SAE_DATA])
6560                 return -EINVAL;
6561
6562         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6563                 if (auth_type != NL80211_AUTHTYPE_SAE)
6564                         return -EINVAL;
6565                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6566                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6567                 /* need to include at least Auth Transaction and Status Code */
6568                 if (sae_data_len < 4)
6569                         return -EINVAL;
6570         }
6571
6572         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6573
6574         /*
6575          * Since we no longer track auth state, ignore
6576          * requests to only change local state.
6577          */
6578         if (local_state_change)
6579                 return 0;
6580
6581         wdev_lock(dev->ieee80211_ptr);
6582         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6583                                  ssid, ssid_len, ie, ie_len,
6584                                  key.p.key, key.p.key_len, key.idx,
6585                                  sae_data, sae_data_len);
6586         wdev_unlock(dev->ieee80211_ptr);
6587         return err;
6588 }
6589
6590 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6591                                    struct genl_info *info,
6592                                    struct cfg80211_crypto_settings *settings,
6593                                    int cipher_limit)
6594 {
6595         memset(settings, 0, sizeof(*settings));
6596
6597         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6598
6599         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6600                 u16 proto;
6601                 proto = nla_get_u16(
6602                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6603                 settings->control_port_ethertype = cpu_to_be16(proto);
6604                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6605                     proto != ETH_P_PAE)
6606                         return -EINVAL;
6607                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6608                         settings->control_port_no_encrypt = true;
6609         } else
6610                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6611
6612         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6613                 void *data;
6614                 int len, i;
6615
6616                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6617                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6618                 settings->n_ciphers_pairwise = len / sizeof(u32);
6619
6620                 if (len % sizeof(u32))
6621                         return -EINVAL;
6622
6623                 if (settings->n_ciphers_pairwise > cipher_limit)
6624                         return -EINVAL;
6625
6626                 memcpy(settings->ciphers_pairwise, data, len);
6627
6628                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6629                         if (!cfg80211_supported_cipher_suite(
6630                                         &rdev->wiphy,
6631                                         settings->ciphers_pairwise[i]))
6632                                 return -EINVAL;
6633         }
6634
6635         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6636                 settings->cipher_group =
6637                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6638                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6639                                                      settings->cipher_group))
6640                         return -EINVAL;
6641         }
6642
6643         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6644                 settings->wpa_versions =
6645                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6646                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6647                         return -EINVAL;
6648         }
6649
6650         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6651                 void *data;
6652                 int len;
6653
6654                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6655                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6656                 settings->n_akm_suites = len / sizeof(u32);
6657
6658                 if (len % sizeof(u32))
6659                         return -EINVAL;
6660
6661                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6662                         return -EINVAL;
6663
6664                 memcpy(settings->akm_suites, data, len);
6665         }
6666
6667         return 0;
6668 }
6669
6670 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6671 {
6672         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6673         struct net_device *dev = info->user_ptr[1];
6674         struct ieee80211_channel *chan;
6675         struct cfg80211_assoc_request req = {};
6676         const u8 *bssid, *ssid;
6677         int err, ssid_len = 0;
6678
6679         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6680                 return -EINVAL;
6681
6682         if (!info->attrs[NL80211_ATTR_MAC] ||
6683             !info->attrs[NL80211_ATTR_SSID] ||
6684             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6685                 return -EINVAL;
6686
6687         if (!rdev->ops->assoc)
6688                 return -EOPNOTSUPP;
6689
6690         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6691             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6692                 return -EOPNOTSUPP;
6693
6694         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6695
6696         chan = nl80211_get_valid_chan(&rdev->wiphy,
6697                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6698         if (!chan)
6699                 return -EINVAL;
6700
6701         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6702         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6703
6704         if (info->attrs[NL80211_ATTR_IE]) {
6705                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6706                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6707         }
6708
6709         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6710                 enum nl80211_mfp mfp =
6711                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6712                 if (mfp == NL80211_MFP_REQUIRED)
6713                         req.use_mfp = true;
6714                 else if (mfp != NL80211_MFP_NO)
6715                         return -EINVAL;
6716         }
6717
6718         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6719                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6720
6721         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6722                 req.flags |= ASSOC_REQ_DISABLE_HT;
6723
6724         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6725                 memcpy(&req.ht_capa_mask,
6726                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6727                        sizeof(req.ht_capa_mask));
6728
6729         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6730                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6731                         return -EINVAL;
6732                 memcpy(&req.ht_capa,
6733                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6734                        sizeof(req.ht_capa));
6735         }
6736
6737         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6738                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6739
6740         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6741                 memcpy(&req.vht_capa_mask,
6742                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6743                        sizeof(req.vht_capa_mask));
6744
6745         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6746                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6747                         return -EINVAL;
6748                 memcpy(&req.vht_capa,
6749                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6750                        sizeof(req.vht_capa));
6751         }
6752
6753         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6754                 if (!(rdev->wiphy.features &
6755                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6756                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6757                         return -EINVAL;
6758                 req.flags |= ASSOC_REQ_USE_RRM;
6759         }
6760
6761         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6762         if (!err) {
6763                 wdev_lock(dev->ieee80211_ptr);
6764                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
6765                                           ssid, ssid_len, &req);
6766                 wdev_unlock(dev->ieee80211_ptr);
6767         }
6768
6769         return err;
6770 }
6771
6772 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
6773 {
6774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6775         struct net_device *dev = info->user_ptr[1];
6776         const u8 *ie = NULL, *bssid;
6777         int ie_len = 0, err;
6778         u16 reason_code;
6779         bool local_state_change;
6780
6781         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6782                 return -EINVAL;
6783
6784         if (!info->attrs[NL80211_ATTR_MAC])
6785                 return -EINVAL;
6786
6787         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6788                 return -EINVAL;
6789
6790         if (!rdev->ops->deauth)
6791                 return -EOPNOTSUPP;
6792
6793         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6794             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6795                 return -EOPNOTSUPP;
6796
6797         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6798
6799         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6800         if (reason_code == 0) {
6801                 /* Reason Code 0 is reserved */
6802                 return -EINVAL;
6803         }
6804
6805         if (info->attrs[NL80211_ATTR_IE]) {
6806                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6807                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6808         }
6809
6810         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6811
6812         wdev_lock(dev->ieee80211_ptr);
6813         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
6814                                    local_state_change);
6815         wdev_unlock(dev->ieee80211_ptr);
6816         return err;
6817 }
6818
6819 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
6820 {
6821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6822         struct net_device *dev = info->user_ptr[1];
6823         const u8 *ie = NULL, *bssid;
6824         int ie_len = 0, err;
6825         u16 reason_code;
6826         bool local_state_change;
6827
6828         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6829                 return -EINVAL;
6830
6831         if (!info->attrs[NL80211_ATTR_MAC])
6832                 return -EINVAL;
6833
6834         if (!info->attrs[NL80211_ATTR_REASON_CODE])
6835                 return -EINVAL;
6836
6837         if (!rdev->ops->disassoc)
6838                 return -EOPNOTSUPP;
6839
6840         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6841             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6842                 return -EOPNOTSUPP;
6843
6844         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6845
6846         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6847         if (reason_code == 0) {
6848                 /* Reason Code 0 is reserved */
6849                 return -EINVAL;
6850         }
6851
6852         if (info->attrs[NL80211_ATTR_IE]) {
6853                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6854                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6855         }
6856
6857         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6858
6859         wdev_lock(dev->ieee80211_ptr);
6860         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
6861                                      local_state_change);
6862         wdev_unlock(dev->ieee80211_ptr);
6863         return err;
6864 }
6865
6866 static bool
6867 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
6868                          int mcast_rate[IEEE80211_NUM_BANDS],
6869                          int rateval)
6870 {
6871         struct wiphy *wiphy = &rdev->wiphy;
6872         bool found = false;
6873         int band, i;
6874
6875         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6876                 struct ieee80211_supported_band *sband;
6877
6878                 sband = wiphy->bands[band];
6879                 if (!sband)
6880                         continue;
6881
6882                 for (i = 0; i < sband->n_bitrates; i++) {
6883                         if (sband->bitrates[i].bitrate == rateval) {
6884                                 mcast_rate[band] = i + 1;
6885                                 found = true;
6886                                 break;
6887                         }
6888                 }
6889         }
6890
6891         return found;
6892 }
6893
6894 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
6895 {
6896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6897         struct net_device *dev = info->user_ptr[1];
6898         struct cfg80211_ibss_params ibss;
6899         struct wiphy *wiphy;
6900         struct cfg80211_cached_keys *connkeys = NULL;
6901         int err;
6902
6903         memset(&ibss, 0, sizeof(ibss));
6904
6905         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6906                 return -EINVAL;
6907
6908         if (!info->attrs[NL80211_ATTR_SSID] ||
6909             !nla_len(info->attrs[NL80211_ATTR_SSID]))
6910                 return -EINVAL;
6911
6912         ibss.beacon_interval = 100;
6913
6914         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
6915                 ibss.beacon_interval =
6916                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
6917                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
6918                         return -EINVAL;
6919         }
6920
6921         if (!rdev->ops->join_ibss)
6922                 return -EOPNOTSUPP;
6923
6924         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
6925                 return -EOPNOTSUPP;
6926
6927         wiphy = &rdev->wiphy;
6928
6929         if (info->attrs[NL80211_ATTR_MAC]) {
6930                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6931
6932                 if (!is_valid_ether_addr(ibss.bssid))
6933                         return -EINVAL;
6934         }
6935         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6936         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6937
6938         if (info->attrs[NL80211_ATTR_IE]) {
6939                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6940                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6941         }
6942
6943         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
6944         if (err)
6945                 return err;
6946
6947         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
6948                                      NL80211_IFTYPE_ADHOC))
6949                 return -EINVAL;
6950
6951         switch (ibss.chandef.width) {
6952         case NL80211_CHAN_WIDTH_5:
6953         case NL80211_CHAN_WIDTH_10:
6954         case NL80211_CHAN_WIDTH_20_NOHT:
6955                 break;
6956         case NL80211_CHAN_WIDTH_20:
6957         case NL80211_CHAN_WIDTH_40:
6958                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
6959                         break;
6960         default:
6961                 return -EINVAL;
6962         }
6963
6964         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
6965         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
6966
6967         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6968                 u8 *rates =
6969                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6970                 int n_rates =
6971                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6972                 struct ieee80211_supported_band *sband =
6973                         wiphy->bands[ibss.chandef.chan->band];
6974
6975                 err = ieee80211_get_ratemask(sband, rates, n_rates,
6976                                              &ibss.basic_rates);
6977                 if (err)
6978                         return err;
6979         }
6980
6981         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6982                 memcpy(&ibss.ht_capa_mask,
6983                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6984                        sizeof(ibss.ht_capa_mask));
6985
6986         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6987                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6988                         return -EINVAL;
6989                 memcpy(&ibss.ht_capa,
6990                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6991                        sizeof(ibss.ht_capa));
6992         }
6993
6994         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
6995             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
6996                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
6997                 return -EINVAL;
6998
6999         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7000                 bool no_ht = false;
7001
7002                 connkeys = nl80211_parse_connkeys(rdev,
7003                                           info->attrs[NL80211_ATTR_KEYS],
7004                                           &no_ht);
7005                 if (IS_ERR(connkeys))
7006                         return PTR_ERR(connkeys);
7007
7008                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7009                     no_ht) {
7010                         kfree(connkeys);
7011                         return -EINVAL;
7012                 }
7013         }
7014
7015         ibss.control_port =
7016                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7017
7018         ibss.userspace_handles_dfs =
7019                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7020
7021         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7022         if (err)
7023                 kzfree(connkeys);
7024         return err;
7025 }
7026
7027 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7028 {
7029         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7030         struct net_device *dev = info->user_ptr[1];
7031
7032         if (!rdev->ops->leave_ibss)
7033                 return -EOPNOTSUPP;
7034
7035         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7036                 return -EOPNOTSUPP;
7037
7038         return cfg80211_leave_ibss(rdev, dev, false);
7039 }
7040
7041 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7042 {
7043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7044         struct net_device *dev = info->user_ptr[1];
7045         int mcast_rate[IEEE80211_NUM_BANDS];
7046         u32 nla_rate;
7047         int err;
7048
7049         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7050             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7051                 return -EOPNOTSUPP;
7052
7053         if (!rdev->ops->set_mcast_rate)
7054                 return -EOPNOTSUPP;
7055
7056         memset(mcast_rate, 0, sizeof(mcast_rate));
7057
7058         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7059                 return -EINVAL;
7060
7061         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7062         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7063                 return -EINVAL;
7064
7065         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7066
7067         return err;
7068 }
7069
7070 static struct sk_buff *
7071 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7072                             int approxlen, u32 portid, u32 seq,
7073                             enum nl80211_commands cmd,
7074                             enum nl80211_attrs attr,
7075                             const struct nl80211_vendor_cmd_info *info,
7076                             gfp_t gfp)
7077 {
7078         struct sk_buff *skb;
7079         void *hdr;
7080         struct nlattr *data;
7081
7082         skb = nlmsg_new(approxlen + 100, gfp);
7083         if (!skb)
7084                 return NULL;
7085
7086         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7087         if (!hdr) {
7088                 kfree_skb(skb);
7089                 return NULL;
7090         }
7091
7092         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7093                 goto nla_put_failure;
7094
7095         if (info) {
7096                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7097                                 info->vendor_id))
7098                         goto nla_put_failure;
7099                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7100                                 info->subcmd))
7101                         goto nla_put_failure;
7102         }
7103
7104         data = nla_nest_start(skb, attr);
7105
7106         ((void **)skb->cb)[0] = rdev;
7107         ((void **)skb->cb)[1] = hdr;
7108         ((void **)skb->cb)[2] = data;
7109
7110         return skb;
7111
7112  nla_put_failure:
7113         kfree_skb(skb);
7114         return NULL;
7115 }
7116
7117 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7118                                            enum nl80211_commands cmd,
7119                                            enum nl80211_attrs attr,
7120                                            int vendor_event_idx,
7121                                            int approxlen, gfp_t gfp)
7122 {
7123         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7124         const struct nl80211_vendor_cmd_info *info;
7125
7126         switch (cmd) {
7127         case NL80211_CMD_TESTMODE:
7128                 if (WARN_ON(vendor_event_idx != -1))
7129                         return NULL;
7130                 info = NULL;
7131                 break;
7132         case NL80211_CMD_VENDOR:
7133                 if (WARN_ON(vendor_event_idx < 0 ||
7134                             vendor_event_idx >= wiphy->n_vendor_events))
7135                         return NULL;
7136                 info = &wiphy->vendor_events[vendor_event_idx];
7137                 break;
7138         default:
7139                 WARN_ON(1);
7140                 return NULL;
7141         }
7142
7143         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7144                                            cmd, attr, info, gfp);
7145 }
7146 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7147
7148 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7149 {
7150         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7151         void *hdr = ((void **)skb->cb)[1];
7152         struct nlattr *data = ((void **)skb->cb)[2];
7153         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7154
7155         /* clear CB data for netlink core to own from now on */
7156         memset(skb->cb, 0, sizeof(skb->cb));
7157
7158         nla_nest_end(skb, data);
7159         genlmsg_end(skb, hdr);
7160
7161         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7162                 mcgrp = NL80211_MCGRP_VENDOR;
7163
7164         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7165                                 mcgrp, gfp);
7166 }
7167 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7168
7169 #ifdef CONFIG_NL80211_TESTMODE
7170 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7171 {
7172         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7173         struct wireless_dev *wdev =
7174                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7175         int err;
7176
7177         if (!rdev->ops->testmode_cmd)
7178                 return -EOPNOTSUPP;
7179
7180         if (IS_ERR(wdev)) {
7181                 err = PTR_ERR(wdev);
7182                 if (err != -EINVAL)
7183                         return err;
7184                 wdev = NULL;
7185         } else if (wdev->wiphy != &rdev->wiphy) {
7186                 return -EINVAL;
7187         }
7188
7189         if (!info->attrs[NL80211_ATTR_TESTDATA])
7190                 return -EINVAL;
7191
7192         rdev->cur_cmd_info = info;
7193         err = rdev_testmode_cmd(rdev, wdev,
7194                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7195                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7196         rdev->cur_cmd_info = NULL;
7197
7198         return err;
7199 }
7200
7201 static int nl80211_testmode_dump(struct sk_buff *skb,
7202                                  struct netlink_callback *cb)
7203 {
7204         struct cfg80211_registered_device *rdev;
7205         int err;
7206         long phy_idx;
7207         void *data = NULL;
7208         int data_len = 0;
7209
7210         rtnl_lock();
7211
7212         if (cb->args[0]) {
7213                 /*
7214                  * 0 is a valid index, but not valid for args[0],
7215                  * so we need to offset by 1.
7216                  */
7217                 phy_idx = cb->args[0] - 1;
7218         } else {
7219                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7220                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7221                                   nl80211_policy);
7222                 if (err)
7223                         goto out_err;
7224
7225                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7226                                                   nl80211_fam.attrbuf);
7227                 if (IS_ERR(rdev)) {
7228                         err = PTR_ERR(rdev);
7229                         goto out_err;
7230                 }
7231                 phy_idx = rdev->wiphy_idx;
7232                 rdev = NULL;
7233
7234                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7235                         cb->args[1] =
7236                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7237         }
7238
7239         if (cb->args[1]) {
7240                 data = nla_data((void *)cb->args[1]);
7241                 data_len = nla_len((void *)cb->args[1]);
7242         }
7243
7244         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7245         if (!rdev) {
7246                 err = -ENOENT;
7247                 goto out_err;
7248         }
7249
7250         if (!rdev->ops->testmode_dump) {
7251                 err = -EOPNOTSUPP;
7252                 goto out_err;
7253         }
7254
7255         while (1) {
7256                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7257                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7258                                            NL80211_CMD_TESTMODE);
7259                 struct nlattr *tmdata;
7260
7261                 if (!hdr)
7262                         break;
7263
7264                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7265                         genlmsg_cancel(skb, hdr);
7266                         break;
7267                 }
7268
7269                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7270                 if (!tmdata) {
7271                         genlmsg_cancel(skb, hdr);
7272                         break;
7273                 }
7274                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7275                 nla_nest_end(skb, tmdata);
7276
7277                 if (err == -ENOBUFS || err == -ENOENT) {
7278                         genlmsg_cancel(skb, hdr);
7279                         break;
7280                 } else if (err) {
7281                         genlmsg_cancel(skb, hdr);
7282                         goto out_err;
7283                 }
7284
7285                 genlmsg_end(skb, hdr);
7286         }
7287
7288         err = skb->len;
7289         /* see above */
7290         cb->args[0] = phy_idx + 1;
7291  out_err:
7292         rtnl_unlock();
7293         return err;
7294 }
7295 #endif
7296
7297 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7298 {
7299         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7300         struct net_device *dev = info->user_ptr[1];
7301         struct cfg80211_connect_params connect;
7302         struct wiphy *wiphy;
7303         struct cfg80211_cached_keys *connkeys = NULL;
7304         int err;
7305
7306         memset(&connect, 0, sizeof(connect));
7307
7308         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7309                 return -EINVAL;
7310
7311         if (!info->attrs[NL80211_ATTR_SSID] ||
7312             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7313                 return -EINVAL;
7314
7315         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7316                 connect.auth_type =
7317                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7318                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7319                                              NL80211_CMD_CONNECT))
7320                         return -EINVAL;
7321         } else
7322                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7323
7324         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7325
7326         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7327                                       NL80211_MAX_NR_CIPHER_SUITES);
7328         if (err)
7329                 return err;
7330
7331         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7332             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7333                 return -EOPNOTSUPP;
7334
7335         wiphy = &rdev->wiphy;
7336
7337         connect.bg_scan_period = -1;
7338         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7339                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7340                 connect.bg_scan_period =
7341                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7342         }
7343
7344         if (info->attrs[NL80211_ATTR_MAC])
7345                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7346         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7347                 connect.bssid_hint =
7348                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7349         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7350         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7351
7352         if (info->attrs[NL80211_ATTR_IE]) {
7353                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7354                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7355         }
7356
7357         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7358                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7359                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7360                     connect.mfp != NL80211_MFP_NO)
7361                         return -EINVAL;
7362         } else {
7363                 connect.mfp = NL80211_MFP_NO;
7364         }
7365
7366         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7367                 connect.channel = nl80211_get_valid_chan(
7368                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7369                 if (!connect.channel)
7370                         return -EINVAL;
7371         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7372                 connect.channel_hint = nl80211_get_valid_chan(
7373                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7374                 if (!connect.channel_hint)
7375                         return -EINVAL;
7376         }
7377
7378         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7379                 connkeys = nl80211_parse_connkeys(rdev,
7380                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7381                 if (IS_ERR(connkeys))
7382                         return PTR_ERR(connkeys);
7383         }
7384
7385         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7386                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7387
7388         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7389                 memcpy(&connect.ht_capa_mask,
7390                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7391                        sizeof(connect.ht_capa_mask));
7392
7393         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7394                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7395                         kzfree(connkeys);
7396                         return -EINVAL;
7397                 }
7398                 memcpy(&connect.ht_capa,
7399                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7400                        sizeof(connect.ht_capa));
7401         }
7402
7403         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7404                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7405
7406         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7407                 memcpy(&connect.vht_capa_mask,
7408                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7409                        sizeof(connect.vht_capa_mask));
7410
7411         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7412                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7413                         kzfree(connkeys);
7414                         return -EINVAL;
7415                 }
7416                 memcpy(&connect.vht_capa,
7417                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7418                        sizeof(connect.vht_capa));
7419         }
7420
7421         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7422                 if (!(rdev->wiphy.features &
7423                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7424                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7425                         return -EINVAL;
7426                 connect.flags |= ASSOC_REQ_USE_RRM;
7427         }
7428
7429         wdev_lock(dev->ieee80211_ptr);
7430         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7431         wdev_unlock(dev->ieee80211_ptr);
7432         if (err)
7433                 kzfree(connkeys);
7434         return err;
7435 }
7436
7437 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7438 {
7439         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7440         struct net_device *dev = info->user_ptr[1];
7441         u16 reason;
7442         int ret;
7443
7444         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7445                 reason = WLAN_REASON_DEAUTH_LEAVING;
7446         else
7447                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7448
7449         if (reason == 0)
7450                 return -EINVAL;
7451
7452         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7453             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7454                 return -EOPNOTSUPP;
7455
7456         wdev_lock(dev->ieee80211_ptr);
7457         ret = cfg80211_disconnect(rdev, dev, reason, true);
7458         wdev_unlock(dev->ieee80211_ptr);
7459         return ret;
7460 }
7461
7462 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7463 {
7464         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7465         struct net *net;
7466         int err;
7467         u32 pid;
7468
7469         if (!info->attrs[NL80211_ATTR_PID])
7470                 return -EINVAL;
7471
7472         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7473
7474         net = get_net_ns_by_pid(pid);
7475         if (IS_ERR(net))
7476                 return PTR_ERR(net);
7477
7478         err = 0;
7479
7480         /* check if anything to do */
7481         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7482                 err = cfg80211_switch_netns(rdev, net);
7483
7484         put_net(net);
7485         return err;
7486 }
7487
7488 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7489 {
7490         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7491         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7492                         struct cfg80211_pmksa *pmksa) = NULL;
7493         struct net_device *dev = info->user_ptr[1];
7494         struct cfg80211_pmksa pmksa;
7495
7496         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7497
7498         if (!info->attrs[NL80211_ATTR_MAC])
7499                 return -EINVAL;
7500
7501         if (!info->attrs[NL80211_ATTR_PMKID])
7502                 return -EINVAL;
7503
7504         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7505         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7506
7507         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7508             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7509                 return -EOPNOTSUPP;
7510
7511         switch (info->genlhdr->cmd) {
7512         case NL80211_CMD_SET_PMKSA:
7513                 rdev_ops = rdev->ops->set_pmksa;
7514                 break;
7515         case NL80211_CMD_DEL_PMKSA:
7516                 rdev_ops = rdev->ops->del_pmksa;
7517                 break;
7518         default:
7519                 WARN_ON(1);
7520                 break;
7521         }
7522
7523         if (!rdev_ops)
7524                 return -EOPNOTSUPP;
7525
7526         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7527 }
7528
7529 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7530 {
7531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7532         struct net_device *dev = info->user_ptr[1];
7533
7534         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7535             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7536                 return -EOPNOTSUPP;
7537
7538         if (!rdev->ops->flush_pmksa)
7539                 return -EOPNOTSUPP;
7540
7541         return rdev_flush_pmksa(rdev, dev);
7542 }
7543
7544 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7545 {
7546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7547         struct net_device *dev = info->user_ptr[1];
7548         u8 action_code, dialog_token;
7549         u32 peer_capability = 0;
7550         u16 status_code;
7551         u8 *peer;
7552         bool initiator;
7553
7554         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7555             !rdev->ops->tdls_mgmt)
7556                 return -EOPNOTSUPP;
7557
7558         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7559             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7560             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7561             !info->attrs[NL80211_ATTR_IE] ||
7562             !info->attrs[NL80211_ATTR_MAC])
7563                 return -EINVAL;
7564
7565         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7566         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7567         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7568         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7569         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7570         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7571                 peer_capability =
7572                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7573
7574         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7575                               dialog_token, status_code, peer_capability,
7576                               initiator,
7577                               nla_data(info->attrs[NL80211_ATTR_IE]),
7578                               nla_len(info->attrs[NL80211_ATTR_IE]));
7579 }
7580
7581 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7582 {
7583         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7584         struct net_device *dev = info->user_ptr[1];
7585         enum nl80211_tdls_operation operation;
7586         u8 *peer;
7587
7588         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7589             !rdev->ops->tdls_oper)
7590                 return -EOPNOTSUPP;
7591
7592         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7593             !info->attrs[NL80211_ATTR_MAC])
7594                 return -EINVAL;
7595
7596         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7597         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7598
7599         return rdev_tdls_oper(rdev, dev, peer, operation);
7600 }
7601
7602 static int nl80211_remain_on_channel(struct sk_buff *skb,
7603                                      struct genl_info *info)
7604 {
7605         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7606         struct wireless_dev *wdev = info->user_ptr[1];
7607         struct cfg80211_chan_def chandef;
7608         struct sk_buff *msg;
7609         void *hdr;
7610         u64 cookie;
7611         u32 duration;
7612         int err;
7613
7614         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7615             !info->attrs[NL80211_ATTR_DURATION])
7616                 return -EINVAL;
7617
7618         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7619
7620         if (!rdev->ops->remain_on_channel ||
7621             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7622                 return -EOPNOTSUPP;
7623
7624         /*
7625          * We should be on that channel for at least a minimum amount of
7626          * time (10ms) but no longer than the driver supports.
7627          */
7628         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7629             duration > rdev->wiphy.max_remain_on_channel_duration)
7630                 return -EINVAL;
7631
7632         err = nl80211_parse_chandef(rdev, info, &chandef);
7633         if (err)
7634                 return err;
7635
7636         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7637         if (!msg)
7638                 return -ENOMEM;
7639
7640         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7641                              NL80211_CMD_REMAIN_ON_CHANNEL);
7642         if (!hdr) {
7643                 err = -ENOBUFS;
7644                 goto free_msg;
7645         }
7646
7647         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7648                                      duration, &cookie);
7649
7650         if (err)
7651                 goto free_msg;
7652
7653         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7654                 goto nla_put_failure;
7655
7656         genlmsg_end(msg, hdr);
7657
7658         return genlmsg_reply(msg, info);
7659
7660  nla_put_failure:
7661         err = -ENOBUFS;
7662  free_msg:
7663         nlmsg_free(msg);
7664         return err;
7665 }
7666
7667 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7668                                             struct genl_info *info)
7669 {
7670         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7671         struct wireless_dev *wdev = info->user_ptr[1];
7672         u64 cookie;
7673
7674         if (!info->attrs[NL80211_ATTR_COOKIE])
7675                 return -EINVAL;
7676
7677         if (!rdev->ops->cancel_remain_on_channel)
7678                 return -EOPNOTSUPP;
7679
7680         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7681
7682         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7683 }
7684
7685 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7686                            u8 *rates, u8 rates_len)
7687 {
7688         u8 i;
7689         u32 mask = 0;
7690
7691         for (i = 0; i < rates_len; i++) {
7692                 int rate = (rates[i] & 0x7f) * 5;
7693                 int ridx;
7694                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7695                         struct ieee80211_rate *srate =
7696                                 &sband->bitrates[ridx];
7697                         if (rate == srate->bitrate) {
7698                                 mask |= 1 << ridx;
7699                                 break;
7700                         }
7701                 }
7702                 if (ridx == sband->n_bitrates)
7703                         return 0; /* rate not found */
7704         }
7705
7706         return mask;
7707 }
7708
7709 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7710                                u8 *rates, u8 rates_len,
7711                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7712 {
7713         u8 i;
7714
7715         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7716
7717         for (i = 0; i < rates_len; i++) {
7718                 int ridx, rbit;
7719
7720                 ridx = rates[i] / 8;
7721                 rbit = BIT(rates[i] % 8);
7722
7723                 /* check validity */
7724                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7725                         return false;
7726
7727                 /* check availability */
7728                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7729                         mcs[ridx] |= rbit;
7730                 else
7731                         return false;
7732         }
7733
7734         return true;
7735 }
7736
7737 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7738 {
7739         u16 mcs_mask = 0;
7740
7741         switch (vht_mcs_map) {
7742         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7743                 break;
7744         case IEEE80211_VHT_MCS_SUPPORT_0_7:
7745                 mcs_mask = 0x00FF;
7746                 break;
7747         case IEEE80211_VHT_MCS_SUPPORT_0_8:
7748                 mcs_mask = 0x01FF;
7749                 break;
7750         case IEEE80211_VHT_MCS_SUPPORT_0_9:
7751                 mcs_mask = 0x03FF;
7752                 break;
7753         default:
7754                 break;
7755         }
7756
7757         return mcs_mask;
7758 }
7759
7760 static void vht_build_mcs_mask(u16 vht_mcs_map,
7761                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7762 {
7763         u8 nss;
7764
7765         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
7766                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
7767                 vht_mcs_map >>= 2;
7768         }
7769 }
7770
7771 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
7772                              struct nl80211_txrate_vht *txrate,
7773                              u16 mcs[NL80211_VHT_NSS_MAX])
7774 {
7775         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7776         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
7777         u8 i;
7778
7779         if (!sband->vht_cap.vht_supported)
7780                 return false;
7781
7782         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
7783
7784         /* Build vht_mcs_mask from VHT capabilities */
7785         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
7786
7787         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
7788                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
7789                         mcs[i] = txrate->mcs[i];
7790                 else
7791                         return false;
7792         }
7793
7794         return true;
7795 }
7796
7797 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
7798         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
7799                                     .len = NL80211_MAX_SUPP_RATES },
7800         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
7801                                 .len = NL80211_MAX_SUPP_HT_RATES },
7802         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
7803         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
7804 };
7805
7806 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
7807                                        struct genl_info *info)
7808 {
7809         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
7810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7811         struct cfg80211_bitrate_mask mask;
7812         int rem, i;
7813         struct net_device *dev = info->user_ptr[1];
7814         struct nlattr *tx_rates;
7815         struct ieee80211_supported_band *sband;
7816         u16 vht_tx_mcs_map;
7817
7818         if (!rdev->ops->set_bitrate_mask)
7819                 return -EOPNOTSUPP;
7820
7821         memset(&mask, 0, sizeof(mask));
7822         /* Default to all rates enabled */
7823         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
7824                 sband = rdev->wiphy.bands[i];
7825
7826                 if (!sband)
7827                         continue;
7828
7829                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
7830                 memcpy(mask.control[i].ht_mcs,
7831                        sband->ht_cap.mcs.rx_mask,
7832                        sizeof(mask.control[i].ht_mcs));
7833
7834                 if (!sband->vht_cap.vht_supported)
7835                         continue;
7836
7837                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
7838                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
7839         }
7840
7841         /* if no rates are given set it back to the defaults */
7842         if (!info->attrs[NL80211_ATTR_TX_RATES])
7843                 goto out;
7844
7845         /*
7846          * The nested attribute uses enum nl80211_band as the index. This maps
7847          * directly to the enum ieee80211_band values used in cfg80211.
7848          */
7849         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
7850         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
7851                 enum ieee80211_band band = nla_type(tx_rates);
7852                 int err;
7853
7854                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
7855                         return -EINVAL;
7856                 sband = rdev->wiphy.bands[band];
7857                 if (sband == NULL)
7858                         return -EINVAL;
7859                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
7860                                 nla_len(tx_rates), nl80211_txattr_policy);
7861                 if (err)
7862                         return err;
7863                 if (tb[NL80211_TXRATE_LEGACY]) {
7864                         mask.control[band].legacy = rateset_to_mask(
7865                                 sband,
7866                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
7867                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
7868                         if ((mask.control[band].legacy == 0) &&
7869                             nla_len(tb[NL80211_TXRATE_LEGACY]))
7870                                 return -EINVAL;
7871                 }
7872                 if (tb[NL80211_TXRATE_HT]) {
7873                         if (!ht_rateset_to_mask(
7874                                         sband,
7875                                         nla_data(tb[NL80211_TXRATE_HT]),
7876                                         nla_len(tb[NL80211_TXRATE_HT]),
7877                                         mask.control[band].ht_mcs))
7878                                 return -EINVAL;
7879                 }
7880                 if (tb[NL80211_TXRATE_VHT]) {
7881                         if (!vht_set_mcs_mask(
7882                                         sband,
7883                                         nla_data(tb[NL80211_TXRATE_VHT]),
7884                                         mask.control[band].vht_mcs))
7885                                 return -EINVAL;
7886                 }
7887                 if (tb[NL80211_TXRATE_GI]) {
7888                         mask.control[band].gi =
7889                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
7890                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
7891                                 return -EINVAL;
7892                 }
7893
7894                 if (mask.control[band].legacy == 0) {
7895                         /* don't allow empty legacy rates if HT or VHT
7896                          * are not even supported.
7897                          */
7898                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
7899                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
7900                                 return -EINVAL;
7901
7902                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
7903                                 if (mask.control[band].ht_mcs[i])
7904                                         goto out;
7905
7906                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
7907                                 if (mask.control[band].vht_mcs[i])
7908                                         goto out;
7909
7910                         /* legacy and mcs rates may not be both empty */
7911                         return -EINVAL;
7912                 }
7913         }
7914
7915 out:
7916         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
7917 }
7918
7919 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
7920 {
7921         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7922         struct wireless_dev *wdev = info->user_ptr[1];
7923         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
7924
7925         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
7926                 return -EINVAL;
7927
7928         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
7929                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
7930
7931         switch (wdev->iftype) {
7932         case NL80211_IFTYPE_STATION:
7933         case NL80211_IFTYPE_ADHOC:
7934         case NL80211_IFTYPE_P2P_CLIENT:
7935         case NL80211_IFTYPE_AP:
7936         case NL80211_IFTYPE_AP_VLAN:
7937         case NL80211_IFTYPE_MESH_POINT:
7938         case NL80211_IFTYPE_P2P_GO:
7939         case NL80211_IFTYPE_P2P_DEVICE:
7940                 break;
7941         default:
7942                 return -EOPNOTSUPP;
7943         }
7944
7945         /* not much point in registering if we can't reply */
7946         if (!rdev->ops->mgmt_tx)
7947                 return -EOPNOTSUPP;
7948
7949         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
7950                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
7951                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
7952 }
7953
7954 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
7955 {
7956         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7957         struct wireless_dev *wdev = info->user_ptr[1];
7958         struct cfg80211_chan_def chandef;
7959         int err;
7960         void *hdr = NULL;
7961         u64 cookie;
7962         struct sk_buff *msg = NULL;
7963         struct cfg80211_mgmt_tx_params params = {
7964                 .dont_wait_for_ack =
7965                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
7966         };
7967
7968         if (!info->attrs[NL80211_ATTR_FRAME])
7969                 return -EINVAL;
7970
7971         if (!rdev->ops->mgmt_tx)
7972                 return -EOPNOTSUPP;
7973
7974         switch (wdev->iftype) {
7975         case NL80211_IFTYPE_P2P_DEVICE:
7976                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
7977                         return -EINVAL;
7978         case NL80211_IFTYPE_STATION:
7979         case NL80211_IFTYPE_ADHOC:
7980         case NL80211_IFTYPE_P2P_CLIENT:
7981         case NL80211_IFTYPE_AP:
7982         case NL80211_IFTYPE_AP_VLAN:
7983         case NL80211_IFTYPE_MESH_POINT:
7984         case NL80211_IFTYPE_P2P_GO:
7985                 break;
7986         default:
7987                 return -EOPNOTSUPP;
7988         }
7989
7990         if (info->attrs[NL80211_ATTR_DURATION]) {
7991                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
7992                         return -EINVAL;
7993                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7994
7995                 /*
7996                  * We should wait on the channel for at least a minimum amount
7997                  * of time (10ms) but no longer than the driver supports.
7998                  */
7999                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8000                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8001                         return -EINVAL;
8002
8003         }
8004
8005         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8006
8007         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8008                 return -EINVAL;
8009
8010         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8011
8012         /* get the channel if any has been specified, otherwise pass NULL to
8013          * the driver. The latter will use the current one
8014          */
8015         chandef.chan = NULL;
8016         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8017                 err = nl80211_parse_chandef(rdev, info, &chandef);
8018                 if (err)
8019                         return err;
8020         }
8021
8022         if (!chandef.chan && params.offchan)
8023                 return -EINVAL;
8024
8025         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8026         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8027
8028         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8029                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8030                 int i;
8031
8032                 if (len % sizeof(u16))
8033                         return -EINVAL;
8034
8035                 params.n_csa_offsets = len / sizeof(u16);
8036                 params.csa_offsets =
8037                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8038
8039                 /* check that all the offsets fit the frame */
8040                 for (i = 0; i < params.n_csa_offsets; i++) {
8041                         if (params.csa_offsets[i] >= params.len)
8042                                 return -EINVAL;
8043                 }
8044         }
8045
8046         if (!params.dont_wait_for_ack) {
8047                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8048                 if (!msg)
8049                         return -ENOMEM;
8050
8051                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8052                                      NL80211_CMD_FRAME);
8053                 if (!hdr) {
8054                         err = -ENOBUFS;
8055                         goto free_msg;
8056                 }
8057         }
8058
8059         params.chan = chandef.chan;
8060         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8061         if (err)
8062                 goto free_msg;
8063
8064         if (msg) {
8065                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8066                         goto nla_put_failure;
8067
8068                 genlmsg_end(msg, hdr);
8069                 return genlmsg_reply(msg, info);
8070         }
8071
8072         return 0;
8073
8074  nla_put_failure:
8075         err = -ENOBUFS;
8076  free_msg:
8077         nlmsg_free(msg);
8078         return err;
8079 }
8080
8081 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8082 {
8083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8084         struct wireless_dev *wdev = info->user_ptr[1];
8085         u64 cookie;
8086
8087         if (!info->attrs[NL80211_ATTR_COOKIE])
8088                 return -EINVAL;
8089
8090         if (!rdev->ops->mgmt_tx_cancel_wait)
8091                 return -EOPNOTSUPP;
8092
8093         switch (wdev->iftype) {
8094         case NL80211_IFTYPE_STATION:
8095         case NL80211_IFTYPE_ADHOC:
8096         case NL80211_IFTYPE_P2P_CLIENT:
8097         case NL80211_IFTYPE_AP:
8098         case NL80211_IFTYPE_AP_VLAN:
8099         case NL80211_IFTYPE_P2P_GO:
8100         case NL80211_IFTYPE_P2P_DEVICE:
8101                 break;
8102         default:
8103                 return -EOPNOTSUPP;
8104         }
8105
8106         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8107
8108         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8109 }
8110
8111 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8112 {
8113         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8114         struct wireless_dev *wdev;
8115         struct net_device *dev = info->user_ptr[1];
8116         u8 ps_state;
8117         bool state;
8118         int err;
8119
8120         if (!info->attrs[NL80211_ATTR_PS_STATE])
8121                 return -EINVAL;
8122
8123         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8124
8125         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8126                 return -EINVAL;
8127
8128         wdev = dev->ieee80211_ptr;
8129
8130         if (!rdev->ops->set_power_mgmt)
8131                 return -EOPNOTSUPP;
8132
8133         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8134
8135         if (state == wdev->ps)
8136                 return 0;
8137
8138         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8139         if (!err)
8140                 wdev->ps = state;
8141         return err;
8142 }
8143
8144 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8145 {
8146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8147         enum nl80211_ps_state ps_state;
8148         struct wireless_dev *wdev;
8149         struct net_device *dev = info->user_ptr[1];
8150         struct sk_buff *msg;
8151         void *hdr;
8152         int err;
8153
8154         wdev = dev->ieee80211_ptr;
8155
8156         if (!rdev->ops->set_power_mgmt)
8157                 return -EOPNOTSUPP;
8158
8159         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8160         if (!msg)
8161                 return -ENOMEM;
8162
8163         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8164                              NL80211_CMD_GET_POWER_SAVE);
8165         if (!hdr) {
8166                 err = -ENOBUFS;
8167                 goto free_msg;
8168         }
8169
8170         if (wdev->ps)
8171                 ps_state = NL80211_PS_ENABLED;
8172         else
8173                 ps_state = NL80211_PS_DISABLED;
8174
8175         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8176                 goto nla_put_failure;
8177
8178         genlmsg_end(msg, hdr);
8179         return genlmsg_reply(msg, info);
8180
8181  nla_put_failure:
8182         err = -ENOBUFS;
8183  free_msg:
8184         nlmsg_free(msg);
8185         return err;
8186 }
8187
8188 static const struct nla_policy
8189 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8190         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8191         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8192         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8193         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8194         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8195         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8196 };
8197
8198 static int nl80211_set_cqm_txe(struct genl_info *info,
8199                                u32 rate, u32 pkts, u32 intvl)
8200 {
8201         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8202         struct net_device *dev = info->user_ptr[1];
8203         struct wireless_dev *wdev = dev->ieee80211_ptr;
8204
8205         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8206                 return -EINVAL;
8207
8208         if (!rdev->ops->set_cqm_txe_config)
8209                 return -EOPNOTSUPP;
8210
8211         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8212             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8213                 return -EOPNOTSUPP;
8214
8215         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8216 }
8217
8218 static int nl80211_set_cqm_rssi(struct genl_info *info,
8219                                 s32 threshold, u32 hysteresis)
8220 {
8221         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8222         struct net_device *dev = info->user_ptr[1];
8223         struct wireless_dev *wdev = dev->ieee80211_ptr;
8224
8225         if (threshold > 0)
8226                 return -EINVAL;
8227
8228         /* disabling - hysteresis should also be zero then */
8229         if (threshold == 0)
8230                 hysteresis = 0;
8231
8232         if (!rdev->ops->set_cqm_rssi_config)
8233                 return -EOPNOTSUPP;
8234
8235         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8236             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8237                 return -EOPNOTSUPP;
8238
8239         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8240 }
8241
8242 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8243 {
8244         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8245         struct nlattr *cqm;
8246         int err;
8247
8248         cqm = info->attrs[NL80211_ATTR_CQM];
8249         if (!cqm)
8250                 return -EINVAL;
8251
8252         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8253                                nl80211_attr_cqm_policy);
8254         if (err)
8255                 return err;
8256
8257         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8258             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8259                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8260                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8261
8262                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8263         }
8264
8265         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8266             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8267             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8268                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8269                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8270                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8271
8272                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8273         }
8274
8275         return -EINVAL;
8276 }
8277
8278 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8279 {
8280         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8281         struct net_device *dev = info->user_ptr[1];
8282         struct mesh_config cfg;
8283         struct mesh_setup setup;
8284         int err;
8285
8286         /* start with default */
8287         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8288         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8289
8290         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8291                 /* and parse parameters if given */
8292                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8293                 if (err)
8294                         return err;
8295         }
8296
8297         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8298             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8299                 return -EINVAL;
8300
8301         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8302         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8303
8304         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8305             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8306                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8307                         return -EINVAL;
8308
8309         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8310                 setup.beacon_interval =
8311                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8312                 if (setup.beacon_interval < 10 ||
8313                     setup.beacon_interval > 10000)
8314                         return -EINVAL;
8315         }
8316
8317         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8318                 setup.dtim_period =
8319                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8320                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8321                         return -EINVAL;
8322         }
8323
8324         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8325                 /* parse additional setup parameters if given */
8326                 err = nl80211_parse_mesh_setup(info, &setup);
8327                 if (err)
8328                         return err;
8329         }
8330
8331         if (setup.user_mpm)
8332                 cfg.auto_open_plinks = false;
8333
8334         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8335                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8336                 if (err)
8337                         return err;
8338         } else {
8339                 /* cfg80211_join_mesh() will sort it out */
8340                 setup.chandef.chan = NULL;
8341         }
8342
8343         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8344                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8345                 int n_rates =
8346                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8347                 struct ieee80211_supported_band *sband;
8348
8349                 if (!setup.chandef.chan)
8350                         return -EINVAL;
8351
8352                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8353
8354                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8355                                              &setup.basic_rates);
8356                 if (err)
8357                         return err;
8358         }
8359
8360         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8361 }
8362
8363 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8364 {
8365         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8366         struct net_device *dev = info->user_ptr[1];
8367
8368         return cfg80211_leave_mesh(rdev, dev);
8369 }
8370
8371 #ifdef CONFIG_PM
8372 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8373                                         struct cfg80211_registered_device *rdev)
8374 {
8375         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8376         struct nlattr *nl_pats, *nl_pat;
8377         int i, pat_len;
8378
8379         if (!wowlan->n_patterns)
8380                 return 0;
8381
8382         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8383         if (!nl_pats)
8384                 return -ENOBUFS;
8385
8386         for (i = 0; i < wowlan->n_patterns; i++) {
8387                 nl_pat = nla_nest_start(msg, i + 1);
8388                 if (!nl_pat)
8389                         return -ENOBUFS;
8390                 pat_len = wowlan->patterns[i].pattern_len;
8391                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8392                             wowlan->patterns[i].mask) ||
8393                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8394                             wowlan->patterns[i].pattern) ||
8395                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8396                                 wowlan->patterns[i].pkt_offset))
8397                         return -ENOBUFS;
8398                 nla_nest_end(msg, nl_pat);
8399         }
8400         nla_nest_end(msg, nl_pats);
8401
8402         return 0;
8403 }
8404
8405 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8406                                    struct cfg80211_wowlan_tcp *tcp)
8407 {
8408         struct nlattr *nl_tcp;
8409
8410         if (!tcp)
8411                 return 0;
8412
8413         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8414         if (!nl_tcp)
8415                 return -ENOBUFS;
8416
8417         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8418             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8419             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8420             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8421             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8422             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8423                     tcp->payload_len, tcp->payload) ||
8424             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8425                         tcp->data_interval) ||
8426             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8427                     tcp->wake_len, tcp->wake_data) ||
8428             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8429                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8430                 return -ENOBUFS;
8431
8432         if (tcp->payload_seq.len &&
8433             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8434                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8435                 return -ENOBUFS;
8436
8437         if (tcp->payload_tok.len &&
8438             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8439                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8440                     &tcp->payload_tok))
8441                 return -ENOBUFS;
8442
8443         nla_nest_end(msg, nl_tcp);
8444
8445         return 0;
8446 }
8447
8448 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8449 {
8450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8451         struct sk_buff *msg;
8452         void *hdr;
8453         u32 size = NLMSG_DEFAULT_SIZE;
8454
8455         if (!rdev->wiphy.wowlan)
8456                 return -EOPNOTSUPP;
8457
8458         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8459                 /* adjust size to have room for all the data */
8460                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8461                         rdev->wiphy.wowlan_config->tcp->payload_len +
8462                         rdev->wiphy.wowlan_config->tcp->wake_len +
8463                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8464         }
8465
8466         msg = nlmsg_new(size, GFP_KERNEL);
8467         if (!msg)
8468                 return -ENOMEM;
8469
8470         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8471                              NL80211_CMD_GET_WOWLAN);
8472         if (!hdr)
8473                 goto nla_put_failure;
8474
8475         if (rdev->wiphy.wowlan_config) {
8476                 struct nlattr *nl_wowlan;
8477
8478                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8479                 if (!nl_wowlan)
8480                         goto nla_put_failure;
8481
8482                 if ((rdev->wiphy.wowlan_config->any &&
8483                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8484                     (rdev->wiphy.wowlan_config->disconnect &&
8485                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8486                     (rdev->wiphy.wowlan_config->magic_pkt &&
8487                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8488                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8489                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8490                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8491                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8492                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8493                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8494                     (rdev->wiphy.wowlan_config->rfkill_release &&
8495                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8496                         goto nla_put_failure;
8497
8498                 if (nl80211_send_wowlan_patterns(msg, rdev))
8499                         goto nla_put_failure;
8500
8501                 if (nl80211_send_wowlan_tcp(msg,
8502                                             rdev->wiphy.wowlan_config->tcp))
8503                         goto nla_put_failure;
8504
8505                 nla_nest_end(msg, nl_wowlan);
8506         }
8507
8508         genlmsg_end(msg, hdr);
8509         return genlmsg_reply(msg, info);
8510
8511 nla_put_failure:
8512         nlmsg_free(msg);
8513         return -ENOBUFS;
8514 }
8515
8516 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8517                                     struct nlattr *attr,
8518                                     struct cfg80211_wowlan *trig)
8519 {
8520         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8521         struct cfg80211_wowlan_tcp *cfg;
8522         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8523         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8524         u32 size;
8525         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8526         int err, port;
8527
8528         if (!rdev->wiphy.wowlan->tcp)
8529                 return -EINVAL;
8530
8531         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8532                         nla_data(attr), nla_len(attr),
8533                         nl80211_wowlan_tcp_policy);
8534         if (err)
8535                 return err;
8536
8537         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8538             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8539             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8540             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8541             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8542             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8543             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8544             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8545                 return -EINVAL;
8546
8547         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8548         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8549                 return -EINVAL;
8550
8551         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8552                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8553             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8554                 return -EINVAL;
8555
8556         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8557         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8558                 return -EINVAL;
8559
8560         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8561         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8562                 return -EINVAL;
8563
8564         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8565                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8566
8567                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8568                 tokens_size = tokln - sizeof(*tok);
8569
8570                 if (!tok->len || tokens_size % tok->len)
8571                         return -EINVAL;
8572                 if (!rdev->wiphy.wowlan->tcp->tok)
8573                         return -EINVAL;
8574                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8575                         return -EINVAL;
8576                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8577                         return -EINVAL;
8578                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8579                         return -EINVAL;
8580                 if (tok->offset + tok->len > data_size)
8581                         return -EINVAL;
8582         }
8583
8584         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8585                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8586                 if (!rdev->wiphy.wowlan->tcp->seq)
8587                         return -EINVAL;
8588                 if (seq->len == 0 || seq->len > 4)
8589                         return -EINVAL;
8590                 if (seq->len + seq->offset > data_size)
8591                         return -EINVAL;
8592         }
8593
8594         size = sizeof(*cfg);
8595         size += data_size;
8596         size += wake_size + wake_mask_size;
8597         size += tokens_size;
8598
8599         cfg = kzalloc(size, GFP_KERNEL);
8600         if (!cfg)
8601                 return -ENOMEM;
8602         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8603         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8604         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8605                ETH_ALEN);
8606         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8607                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8608         else
8609                 port = 0;
8610 #ifdef CONFIG_INET
8611         /* allocate a socket and port for it and use it */
8612         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8613                             IPPROTO_TCP, &cfg->sock, 1);
8614         if (err) {
8615                 kfree(cfg);
8616                 return err;
8617         }
8618         if (inet_csk_get_port(cfg->sock->sk, port)) {
8619                 sock_release(cfg->sock);
8620                 kfree(cfg);
8621                 return -EADDRINUSE;
8622         }
8623         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8624 #else
8625         if (!port) {
8626                 kfree(cfg);
8627                 return -EINVAL;
8628         }
8629         cfg->src_port = port;
8630 #endif
8631
8632         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8633         cfg->payload_len = data_size;
8634         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8635         memcpy((void *)cfg->payload,
8636                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8637                data_size);
8638         if (seq)
8639                 cfg->payload_seq = *seq;
8640         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8641         cfg->wake_len = wake_size;
8642         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8643         memcpy((void *)cfg->wake_data,
8644                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8645                wake_size);
8646         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8647                          data_size + wake_size;
8648         memcpy((void *)cfg->wake_mask,
8649                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8650                wake_mask_size);
8651         if (tok) {
8652                 cfg->tokens_size = tokens_size;
8653                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8654         }
8655
8656         trig->tcp = cfg;
8657
8658         return 0;
8659 }
8660
8661 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8662 {
8663         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8664         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8665         struct cfg80211_wowlan new_triggers = {};
8666         struct cfg80211_wowlan *ntrig;
8667         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8668         int err, i;
8669         bool prev_enabled = rdev->wiphy.wowlan_config;
8670
8671         if (!wowlan)
8672                 return -EOPNOTSUPP;
8673
8674         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8675                 cfg80211_rdev_free_wowlan(rdev);
8676                 rdev->wiphy.wowlan_config = NULL;
8677                 goto set_wakeup;
8678         }
8679
8680         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8681                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8682                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8683                         nl80211_wowlan_policy);
8684         if (err)
8685                 return err;
8686
8687         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8688                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8689                         return -EINVAL;
8690                 new_triggers.any = true;
8691         }
8692
8693         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8694                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8695                         return -EINVAL;
8696                 new_triggers.disconnect = true;
8697         }
8698
8699         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8700                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8701                         return -EINVAL;
8702                 new_triggers.magic_pkt = true;
8703         }
8704
8705         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8706                 return -EINVAL;
8707
8708         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
8709                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
8710                         return -EINVAL;
8711                 new_triggers.gtk_rekey_failure = true;
8712         }
8713
8714         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
8715                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
8716                         return -EINVAL;
8717                 new_triggers.eap_identity_req = true;
8718         }
8719
8720         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
8721                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
8722                         return -EINVAL;
8723                 new_triggers.four_way_handshake = true;
8724         }
8725
8726         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
8727                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
8728                         return -EINVAL;
8729                 new_triggers.rfkill_release = true;
8730         }
8731
8732         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
8733                 struct nlattr *pat;
8734                 int n_patterns = 0;
8735                 int rem, pat_len, mask_len, pkt_offset;
8736                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8737
8738                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8739                                     rem)
8740                         n_patterns++;
8741                 if (n_patterns > wowlan->n_patterns)
8742                         return -EINVAL;
8743
8744                 new_triggers.patterns = kcalloc(n_patterns,
8745                                                 sizeof(new_triggers.patterns[0]),
8746                                                 GFP_KERNEL);
8747                 if (!new_triggers.patterns)
8748                         return -ENOMEM;
8749
8750                 new_triggers.n_patterns = n_patterns;
8751                 i = 0;
8752
8753                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
8754                                     rem) {
8755                         u8 *mask_pat;
8756
8757                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8758                                   nla_len(pat), NULL);
8759                         err = -EINVAL;
8760                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
8761                             !pat_tb[NL80211_PKTPAT_PATTERN])
8762                                 goto error;
8763                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8764                         mask_len = DIV_ROUND_UP(pat_len, 8);
8765                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8766                                 goto error;
8767                         if (pat_len > wowlan->pattern_max_len ||
8768                             pat_len < wowlan->pattern_min_len)
8769                                 goto error;
8770
8771                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
8772                                 pkt_offset = 0;
8773                         else
8774                                 pkt_offset = nla_get_u32(
8775                                         pat_tb[NL80211_PKTPAT_OFFSET]);
8776                         if (pkt_offset > wowlan->max_pkt_offset)
8777                                 goto error;
8778                         new_triggers.patterns[i].pkt_offset = pkt_offset;
8779
8780                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
8781                         if (!mask_pat) {
8782                                 err = -ENOMEM;
8783                                 goto error;
8784                         }
8785                         new_triggers.patterns[i].mask = mask_pat;
8786                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
8787                                mask_len);
8788                         mask_pat += mask_len;
8789                         new_triggers.patterns[i].pattern = mask_pat;
8790                         new_triggers.patterns[i].pattern_len = pat_len;
8791                         memcpy(mask_pat,
8792                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
8793                                pat_len);
8794                         i++;
8795                 }
8796         }
8797
8798         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
8799                 err = nl80211_parse_wowlan_tcp(
8800                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
8801                         &new_triggers);
8802                 if (err)
8803                         goto error;
8804         }
8805
8806         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
8807         if (!ntrig) {
8808                 err = -ENOMEM;
8809                 goto error;
8810         }
8811         cfg80211_rdev_free_wowlan(rdev);
8812         rdev->wiphy.wowlan_config = ntrig;
8813
8814  set_wakeup:
8815         if (rdev->ops->set_wakeup &&
8816             prev_enabled != !!rdev->wiphy.wowlan_config)
8817                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
8818
8819         return 0;
8820  error:
8821         for (i = 0; i < new_triggers.n_patterns; i++)
8822                 kfree(new_triggers.patterns[i].mask);
8823         kfree(new_triggers.patterns);
8824         if (new_triggers.tcp && new_triggers.tcp->sock)
8825                 sock_release(new_triggers.tcp->sock);
8826         kfree(new_triggers.tcp);
8827         return err;
8828 }
8829 #endif
8830
8831 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
8832                                        struct cfg80211_registered_device *rdev)
8833 {
8834         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
8835         int i, j, pat_len;
8836         struct cfg80211_coalesce_rules *rule;
8837
8838         if (!rdev->coalesce->n_rules)
8839                 return 0;
8840
8841         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
8842         if (!nl_rules)
8843                 return -ENOBUFS;
8844
8845         for (i = 0; i < rdev->coalesce->n_rules; i++) {
8846                 nl_rule = nla_nest_start(msg, i + 1);
8847                 if (!nl_rule)
8848                         return -ENOBUFS;
8849
8850                 rule = &rdev->coalesce->rules[i];
8851                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
8852                                 rule->delay))
8853                         return -ENOBUFS;
8854
8855                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
8856                                 rule->condition))
8857                         return -ENOBUFS;
8858
8859                 nl_pats = nla_nest_start(msg,
8860                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
8861                 if (!nl_pats)
8862                         return -ENOBUFS;
8863
8864                 for (j = 0; j < rule->n_patterns; j++) {
8865                         nl_pat = nla_nest_start(msg, j + 1);
8866                         if (!nl_pat)
8867                                 return -ENOBUFS;
8868                         pat_len = rule->patterns[j].pattern_len;
8869                         if (nla_put(msg, NL80211_PKTPAT_MASK,
8870                                     DIV_ROUND_UP(pat_len, 8),
8871                                     rule->patterns[j].mask) ||
8872                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8873                                     rule->patterns[j].pattern) ||
8874                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8875                                         rule->patterns[j].pkt_offset))
8876                                 return -ENOBUFS;
8877                         nla_nest_end(msg, nl_pat);
8878                 }
8879                 nla_nest_end(msg, nl_pats);
8880                 nla_nest_end(msg, nl_rule);
8881         }
8882         nla_nest_end(msg, nl_rules);
8883
8884         return 0;
8885 }
8886
8887 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
8888 {
8889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8890         struct sk_buff *msg;
8891         void *hdr;
8892
8893         if (!rdev->wiphy.coalesce)
8894                 return -EOPNOTSUPP;
8895
8896         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8897         if (!msg)
8898                 return -ENOMEM;
8899
8900         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8901                              NL80211_CMD_GET_COALESCE);
8902         if (!hdr)
8903                 goto nla_put_failure;
8904
8905         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
8906                 goto nla_put_failure;
8907
8908         genlmsg_end(msg, hdr);
8909         return genlmsg_reply(msg, info);
8910
8911 nla_put_failure:
8912         nlmsg_free(msg);
8913         return -ENOBUFS;
8914 }
8915
8916 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
8917 {
8918         struct cfg80211_coalesce *coalesce = rdev->coalesce;
8919         int i, j;
8920         struct cfg80211_coalesce_rules *rule;
8921
8922         if (!coalesce)
8923                 return;
8924
8925         for (i = 0; i < coalesce->n_rules; i++) {
8926                 rule = &coalesce->rules[i];
8927                 for (j = 0; j < rule->n_patterns; j++)
8928                         kfree(rule->patterns[j].mask);
8929                 kfree(rule->patterns);
8930         }
8931         kfree(coalesce->rules);
8932         kfree(coalesce);
8933         rdev->coalesce = NULL;
8934 }
8935
8936 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
8937                                        struct nlattr *rule,
8938                                        struct cfg80211_coalesce_rules *new_rule)
8939 {
8940         int err, i;
8941         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
8942         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
8943         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
8944         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
8945
8946         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
8947                         nla_len(rule), nl80211_coalesce_policy);
8948         if (err)
8949                 return err;
8950
8951         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
8952                 new_rule->delay =
8953                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
8954         if (new_rule->delay > coalesce->max_delay)
8955                 return -EINVAL;
8956
8957         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
8958                 new_rule->condition =
8959                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
8960         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
8961             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
8962                 return -EINVAL;
8963
8964         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
8965                 return -EINVAL;
8966
8967         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8968                             rem)
8969                 n_patterns++;
8970         if (n_patterns > coalesce->n_patterns)
8971                 return -EINVAL;
8972
8973         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
8974                                      GFP_KERNEL);
8975         if (!new_rule->patterns)
8976                 return -ENOMEM;
8977
8978         new_rule->n_patterns = n_patterns;
8979         i = 0;
8980
8981         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
8982                             rem) {
8983                 u8 *mask_pat;
8984
8985                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
8986                           nla_len(pat), NULL);
8987                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
8988                     !pat_tb[NL80211_PKTPAT_PATTERN])
8989                         return -EINVAL;
8990                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
8991                 mask_len = DIV_ROUND_UP(pat_len, 8);
8992                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
8993                         return -EINVAL;
8994                 if (pat_len > coalesce->pattern_max_len ||
8995                     pat_len < coalesce->pattern_min_len)
8996                         return -EINVAL;
8997
8998                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
8999                         pkt_offset = 0;
9000                 else
9001                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9002                 if (pkt_offset > coalesce->max_pkt_offset)
9003                         return -EINVAL;
9004                 new_rule->patterns[i].pkt_offset = pkt_offset;
9005
9006                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9007                 if (!mask_pat)
9008                         return -ENOMEM;
9009
9010                 new_rule->patterns[i].mask = mask_pat;
9011                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9012                        mask_len);
9013
9014                 mask_pat += mask_len;
9015                 new_rule->patterns[i].pattern = mask_pat;
9016                 new_rule->patterns[i].pattern_len = pat_len;
9017                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9018                        pat_len);
9019                 i++;
9020         }
9021
9022         return 0;
9023 }
9024
9025 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9026 {
9027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9028         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9029         struct cfg80211_coalesce new_coalesce = {};
9030         struct cfg80211_coalesce *n_coalesce;
9031         int err, rem_rule, n_rules = 0, i, j;
9032         struct nlattr *rule;
9033         struct cfg80211_coalesce_rules *tmp_rule;
9034
9035         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9036                 return -EOPNOTSUPP;
9037
9038         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9039                 cfg80211_rdev_free_coalesce(rdev);
9040                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9041                 return 0;
9042         }
9043
9044         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9045                             rem_rule)
9046                 n_rules++;
9047         if (n_rules > coalesce->n_rules)
9048                 return -EINVAL;
9049
9050         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9051                                      GFP_KERNEL);
9052         if (!new_coalesce.rules)
9053                 return -ENOMEM;
9054
9055         new_coalesce.n_rules = n_rules;
9056         i = 0;
9057
9058         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9059                             rem_rule) {
9060                 err = nl80211_parse_coalesce_rule(rdev, rule,
9061                                                   &new_coalesce.rules[i]);
9062                 if (err)
9063                         goto error;
9064
9065                 i++;
9066         }
9067
9068         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9069         if (err)
9070                 goto error;
9071
9072         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9073         if (!n_coalesce) {
9074                 err = -ENOMEM;
9075                 goto error;
9076         }
9077         cfg80211_rdev_free_coalesce(rdev);
9078         rdev->coalesce = n_coalesce;
9079
9080         return 0;
9081 error:
9082         for (i = 0; i < new_coalesce.n_rules; i++) {
9083                 tmp_rule = &new_coalesce.rules[i];
9084                 for (j = 0; j < tmp_rule->n_patterns; j++)
9085                         kfree(tmp_rule->patterns[j].mask);
9086                 kfree(tmp_rule->patterns);
9087         }
9088         kfree(new_coalesce.rules);
9089
9090         return err;
9091 }
9092
9093 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9094 {
9095         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9096         struct net_device *dev = info->user_ptr[1];
9097         struct wireless_dev *wdev = dev->ieee80211_ptr;
9098         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9099         struct cfg80211_gtk_rekey_data rekey_data;
9100         int err;
9101
9102         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9103                 return -EINVAL;
9104
9105         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9106                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9107                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9108                         nl80211_rekey_policy);
9109         if (err)
9110                 return err;
9111
9112         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9113                 return -ERANGE;
9114         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9115                 return -ERANGE;
9116         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9117                 return -ERANGE;
9118
9119         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9120         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9121         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9122
9123         wdev_lock(wdev);
9124         if (!wdev->current_bss) {
9125                 err = -ENOTCONN;
9126                 goto out;
9127         }
9128
9129         if (!rdev->ops->set_rekey_data) {
9130                 err = -EOPNOTSUPP;
9131                 goto out;
9132         }
9133
9134         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9135  out:
9136         wdev_unlock(wdev);
9137         return err;
9138 }
9139
9140 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9141                                              struct genl_info *info)
9142 {
9143         struct net_device *dev = info->user_ptr[1];
9144         struct wireless_dev *wdev = dev->ieee80211_ptr;
9145
9146         if (wdev->iftype != NL80211_IFTYPE_AP &&
9147             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9148                 return -EINVAL;
9149
9150         if (wdev->ap_unexpected_nlportid)
9151                 return -EBUSY;
9152
9153         wdev->ap_unexpected_nlportid = info->snd_portid;
9154         return 0;
9155 }
9156
9157 static int nl80211_probe_client(struct sk_buff *skb,
9158                                 struct genl_info *info)
9159 {
9160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9161         struct net_device *dev = info->user_ptr[1];
9162         struct wireless_dev *wdev = dev->ieee80211_ptr;
9163         struct sk_buff *msg;
9164         void *hdr;
9165         const u8 *addr;
9166         u64 cookie;
9167         int err;
9168
9169         if (wdev->iftype != NL80211_IFTYPE_AP &&
9170             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9171                 return -EOPNOTSUPP;
9172
9173         if (!info->attrs[NL80211_ATTR_MAC])
9174                 return -EINVAL;
9175
9176         if (!rdev->ops->probe_client)
9177                 return -EOPNOTSUPP;
9178
9179         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9180         if (!msg)
9181                 return -ENOMEM;
9182
9183         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9184                              NL80211_CMD_PROBE_CLIENT);
9185         if (!hdr) {
9186                 err = -ENOBUFS;
9187                 goto free_msg;
9188         }
9189
9190         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9191
9192         err = rdev_probe_client(rdev, dev, addr, &cookie);
9193         if (err)
9194                 goto free_msg;
9195
9196         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9197                 goto nla_put_failure;
9198
9199         genlmsg_end(msg, hdr);
9200
9201         return genlmsg_reply(msg, info);
9202
9203  nla_put_failure:
9204         err = -ENOBUFS;
9205  free_msg:
9206         nlmsg_free(msg);
9207         return err;
9208 }
9209
9210 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9211 {
9212         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9213         struct cfg80211_beacon_registration *reg, *nreg;
9214         int rv;
9215
9216         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9217                 return -EOPNOTSUPP;
9218
9219         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9220         if (!nreg)
9221                 return -ENOMEM;
9222
9223         /* First, check if already registered. */
9224         spin_lock_bh(&rdev->beacon_registrations_lock);
9225         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9226                 if (reg->nlportid == info->snd_portid) {
9227                         rv = -EALREADY;
9228                         goto out_err;
9229                 }
9230         }
9231         /* Add it to the list */
9232         nreg->nlportid = info->snd_portid;
9233         list_add(&nreg->list, &rdev->beacon_registrations);
9234
9235         spin_unlock_bh(&rdev->beacon_registrations_lock);
9236
9237         return 0;
9238 out_err:
9239         spin_unlock_bh(&rdev->beacon_registrations_lock);
9240         kfree(nreg);
9241         return rv;
9242 }
9243
9244 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9245 {
9246         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9247         struct wireless_dev *wdev = info->user_ptr[1];
9248         int err;
9249
9250         if (!rdev->ops->start_p2p_device)
9251                 return -EOPNOTSUPP;
9252
9253         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9254                 return -EOPNOTSUPP;
9255
9256         if (wdev->p2p_started)
9257                 return 0;
9258
9259         if (rfkill_blocked(rdev->rfkill))
9260                 return -ERFKILL;
9261
9262         err = rdev_start_p2p_device(rdev, wdev);
9263         if (err)
9264                 return err;
9265
9266         wdev->p2p_started = true;
9267         rdev->opencount++;
9268
9269         return 0;
9270 }
9271
9272 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9273 {
9274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9275         struct wireless_dev *wdev = info->user_ptr[1];
9276
9277         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9278                 return -EOPNOTSUPP;
9279
9280         if (!rdev->ops->stop_p2p_device)
9281                 return -EOPNOTSUPP;
9282
9283         cfg80211_stop_p2p_device(rdev, wdev);
9284
9285         return 0;
9286 }
9287
9288 static int nl80211_get_protocol_features(struct sk_buff *skb,
9289                                          struct genl_info *info)
9290 {
9291         void *hdr;
9292         struct sk_buff *msg;
9293
9294         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9295         if (!msg)
9296                 return -ENOMEM;
9297
9298         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9299                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9300         if (!hdr)
9301                 goto nla_put_failure;
9302
9303         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9304                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9305                 goto nla_put_failure;
9306
9307         genlmsg_end(msg, hdr);
9308         return genlmsg_reply(msg, info);
9309
9310  nla_put_failure:
9311         kfree_skb(msg);
9312         return -ENOBUFS;
9313 }
9314
9315 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9316 {
9317         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9318         struct cfg80211_update_ft_ies_params ft_params;
9319         struct net_device *dev = info->user_ptr[1];
9320
9321         if (!rdev->ops->update_ft_ies)
9322                 return -EOPNOTSUPP;
9323
9324         if (!info->attrs[NL80211_ATTR_MDID] ||
9325             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9326                 return -EINVAL;
9327
9328         memset(&ft_params, 0, sizeof(ft_params));
9329         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9330         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9331         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9332
9333         return rdev_update_ft_ies(rdev, dev, &ft_params);
9334 }
9335
9336 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9337                                        struct genl_info *info)
9338 {
9339         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9340         struct wireless_dev *wdev = info->user_ptr[1];
9341         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9342         u16 duration;
9343         int ret;
9344
9345         if (!rdev->ops->crit_proto_start)
9346                 return -EOPNOTSUPP;
9347
9348         if (WARN_ON(!rdev->ops->crit_proto_stop))
9349                 return -EINVAL;
9350
9351         if (rdev->crit_proto_nlportid)
9352                 return -EBUSY;
9353
9354         /* determine protocol if provided */
9355         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9356                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9357
9358         if (proto >= NUM_NL80211_CRIT_PROTO)
9359                 return -EINVAL;
9360
9361         /* timeout must be provided */
9362         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9363                 return -EINVAL;
9364
9365         duration =
9366                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9367
9368         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9369                 return -ERANGE;
9370
9371         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9372         if (!ret)
9373                 rdev->crit_proto_nlportid = info->snd_portid;
9374
9375         return ret;
9376 }
9377
9378 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9379                                       struct genl_info *info)
9380 {
9381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9382         struct wireless_dev *wdev = info->user_ptr[1];
9383
9384         if (!rdev->ops->crit_proto_stop)
9385                 return -EOPNOTSUPP;
9386
9387         if (rdev->crit_proto_nlportid) {
9388                 rdev->crit_proto_nlportid = 0;
9389                 rdev_crit_proto_stop(rdev, wdev);
9390         }
9391         return 0;
9392 }
9393
9394 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9395 {
9396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9397         struct wireless_dev *wdev =
9398                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9399         int i, err;
9400         u32 vid, subcmd;
9401
9402         if (!rdev->wiphy.vendor_commands)
9403                 return -EOPNOTSUPP;
9404
9405         if (IS_ERR(wdev)) {
9406                 err = PTR_ERR(wdev);
9407                 if (err != -EINVAL)
9408                         return err;
9409                 wdev = NULL;
9410         } else if (wdev->wiphy != &rdev->wiphy) {
9411                 return -EINVAL;
9412         }
9413
9414         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9415             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9416                 return -EINVAL;
9417
9418         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9419         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9420         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9421                 const struct wiphy_vendor_command *vcmd;
9422                 void *data = NULL;
9423                 int len = 0;
9424
9425                 vcmd = &rdev->wiphy.vendor_commands[i];
9426
9427                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9428                         continue;
9429
9430                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9431                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9432                         if (!wdev)
9433                                 return -EINVAL;
9434                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9435                             !wdev->netdev)
9436                                 return -EINVAL;
9437
9438                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9439                                 if (wdev->netdev &&
9440                                     !netif_running(wdev->netdev))
9441                                         return -ENETDOWN;
9442                                 if (!wdev->netdev && !wdev->p2p_started)
9443                                         return -ENETDOWN;
9444                         }
9445                 } else {
9446                         wdev = NULL;
9447                 }
9448
9449                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9450                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9451                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9452                 }
9453
9454                 rdev->cur_cmd_info = info;
9455                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9456                                                           data, len);
9457                 rdev->cur_cmd_info = NULL;
9458                 return err;
9459         }
9460
9461         return -EOPNOTSUPP;
9462 }
9463
9464 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9465                                            enum nl80211_commands cmd,
9466                                            enum nl80211_attrs attr,
9467                                            int approxlen)
9468 {
9469         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9470
9471         if (WARN_ON(!rdev->cur_cmd_info))
9472                 return NULL;
9473
9474         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9475                                            rdev->cur_cmd_info->snd_portid,
9476                                            rdev->cur_cmd_info->snd_seq,
9477                                            cmd, attr, NULL, GFP_KERNEL);
9478 }
9479 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9480
9481 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9482 {
9483         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9484         void *hdr = ((void **)skb->cb)[1];
9485         struct nlattr *data = ((void **)skb->cb)[2];
9486
9487         /* clear CB data for netlink core to own from now on */
9488         memset(skb->cb, 0, sizeof(skb->cb));
9489
9490         if (WARN_ON(!rdev->cur_cmd_info)) {
9491                 kfree_skb(skb);
9492                 return -EINVAL;
9493         }
9494
9495         nla_nest_end(skb, data);
9496         genlmsg_end(skb, hdr);
9497         return genlmsg_reply(skb, rdev->cur_cmd_info);
9498 }
9499 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9500
9501
9502 static int nl80211_set_qos_map(struct sk_buff *skb,
9503                                struct genl_info *info)
9504 {
9505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9506         struct cfg80211_qos_map *qos_map = NULL;
9507         struct net_device *dev = info->user_ptr[1];
9508         u8 *pos, len, num_des, des_len, des;
9509         int ret;
9510
9511         if (!rdev->ops->set_qos_map)
9512                 return -EOPNOTSUPP;
9513
9514         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9515                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9516                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9517
9518                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9519                     len > IEEE80211_QOS_MAP_LEN_MAX)
9520                         return -EINVAL;
9521
9522                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9523                 if (!qos_map)
9524                         return -ENOMEM;
9525
9526                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9527                 if (num_des) {
9528                         des_len = num_des *
9529                                 sizeof(struct cfg80211_dscp_exception);
9530                         memcpy(qos_map->dscp_exception, pos, des_len);
9531                         qos_map->num_des = num_des;
9532                         for (des = 0; des < num_des; des++) {
9533                                 if (qos_map->dscp_exception[des].up > 7) {
9534                                         kfree(qos_map);
9535                                         return -EINVAL;
9536                                 }
9537                         }
9538                         pos += des_len;
9539                 }
9540                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9541         }
9542
9543         wdev_lock(dev->ieee80211_ptr);
9544         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9545         if (!ret)
9546                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9547         wdev_unlock(dev->ieee80211_ptr);
9548
9549         kfree(qos_map);
9550         return ret;
9551 }
9552
9553 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9554 {
9555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9556         struct net_device *dev = info->user_ptr[1];
9557         struct wireless_dev *wdev = dev->ieee80211_ptr;
9558         const u8 *peer;
9559         u8 tsid, up;
9560         u16 admitted_time = 0;
9561         int err;
9562
9563         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9564                 return -EOPNOTSUPP;
9565
9566         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9567             !info->attrs[NL80211_ATTR_USER_PRIO])
9568                 return -EINVAL;
9569
9570         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9571         if (tsid >= IEEE80211_NUM_TIDS)
9572                 return -EINVAL;
9573
9574         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9575         if (up >= IEEE80211_NUM_UPS)
9576                 return -EINVAL;
9577
9578         /* WMM uses TIDs 0-7 even for TSPEC */
9579         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9580                 /* TODO: handle 802.11 TSPEC/admission control
9581                  * need more attributes for that (e.g. BA session requirement);
9582                  * change the WMM adminssion test above to allow both then
9583                  */
9584                 return -EINVAL;
9585         }
9586
9587         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9588
9589         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9590                 admitted_time =
9591                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9592                 if (!admitted_time)
9593                         return -EINVAL;
9594         }
9595
9596         wdev_lock(wdev);
9597         switch (wdev->iftype) {
9598         case NL80211_IFTYPE_STATION:
9599         case NL80211_IFTYPE_P2P_CLIENT:
9600                 if (wdev->current_bss)
9601                         break;
9602                 err = -ENOTCONN;
9603                 goto out;
9604         default:
9605                 err = -EOPNOTSUPP;
9606                 goto out;
9607         }
9608
9609         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9610
9611  out:
9612         wdev_unlock(wdev);
9613         return err;
9614 }
9615
9616 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9617 {
9618         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9619         struct net_device *dev = info->user_ptr[1];
9620         struct wireless_dev *wdev = dev->ieee80211_ptr;
9621         const u8 *peer;
9622         u8 tsid;
9623         int err;
9624
9625         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9626                 return -EINVAL;
9627
9628         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9629         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9630
9631         wdev_lock(wdev);
9632         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9633         wdev_unlock(wdev);
9634
9635         return err;
9636 }
9637
9638 #define NL80211_FLAG_NEED_WIPHY         0x01
9639 #define NL80211_FLAG_NEED_NETDEV        0x02
9640 #define NL80211_FLAG_NEED_RTNL          0x04
9641 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
9642 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
9643                                          NL80211_FLAG_CHECK_NETDEV_UP)
9644 #define NL80211_FLAG_NEED_WDEV          0x10
9645 /* If a netdev is associated, it must be UP, P2P must be started */
9646 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
9647                                          NL80211_FLAG_CHECK_NETDEV_UP)
9648 #define NL80211_FLAG_CLEAR_SKB          0x20
9649
9650 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
9651                             struct genl_info *info)
9652 {
9653         struct cfg80211_registered_device *rdev;
9654         struct wireless_dev *wdev;
9655         struct net_device *dev;
9656         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
9657
9658         if (rtnl)
9659                 rtnl_lock();
9660
9661         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
9662                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
9663                 if (IS_ERR(rdev)) {
9664                         if (rtnl)
9665                                 rtnl_unlock();
9666                         return PTR_ERR(rdev);
9667                 }
9668                 info->user_ptr[0] = rdev;
9669         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
9670                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9671                 ASSERT_RTNL();
9672
9673                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
9674                                                   info->attrs);
9675                 if (IS_ERR(wdev)) {
9676                         if (rtnl)
9677                                 rtnl_unlock();
9678                         return PTR_ERR(wdev);
9679                 }
9680
9681                 dev = wdev->netdev;
9682                 rdev = wiphy_to_rdev(wdev->wiphy);
9683
9684                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
9685                         if (!dev) {
9686                                 if (rtnl)
9687                                         rtnl_unlock();
9688                                 return -EINVAL;
9689                         }
9690
9691                         info->user_ptr[1] = dev;
9692                 } else {
9693                         info->user_ptr[1] = wdev;
9694                 }
9695
9696                 if (dev) {
9697                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
9698                             !netif_running(dev)) {
9699                                 if (rtnl)
9700                                         rtnl_unlock();
9701                                 return -ENETDOWN;
9702                         }
9703
9704                         dev_hold(dev);
9705                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
9706                         if (!wdev->p2p_started) {
9707                                 if (rtnl)
9708                                         rtnl_unlock();
9709                                 return -ENETDOWN;
9710                         }
9711                 }
9712
9713                 info->user_ptr[0] = rdev;
9714         }
9715
9716         return 0;
9717 }
9718
9719 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
9720                               struct genl_info *info)
9721 {
9722         if (info->user_ptr[1]) {
9723                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
9724                         struct wireless_dev *wdev = info->user_ptr[1];
9725
9726                         if (wdev->netdev)
9727                                 dev_put(wdev->netdev);
9728                 } else {
9729                         dev_put(info->user_ptr[1]);
9730                 }
9731         }
9732
9733         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
9734                 rtnl_unlock();
9735
9736         /* If needed, clear the netlink message payload from the SKB
9737          * as it might contain key data that shouldn't stick around on
9738          * the heap after the SKB is freed. The netlink message header
9739          * is still needed for further processing, so leave it intact.
9740          */
9741         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
9742                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
9743
9744                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
9745         }
9746 }
9747
9748 static const struct genl_ops nl80211_ops[] = {
9749         {
9750                 .cmd = NL80211_CMD_GET_WIPHY,
9751                 .doit = nl80211_get_wiphy,
9752                 .dumpit = nl80211_dump_wiphy,
9753                 .done = nl80211_dump_wiphy_done,
9754                 .policy = nl80211_policy,
9755                 /* can be retrieved by unprivileged users */
9756                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9757                                   NL80211_FLAG_NEED_RTNL,
9758         },
9759         {
9760                 .cmd = NL80211_CMD_SET_WIPHY,
9761                 .doit = nl80211_set_wiphy,
9762                 .policy = nl80211_policy,
9763                 .flags = GENL_ADMIN_PERM,
9764                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9765         },
9766         {
9767                 .cmd = NL80211_CMD_GET_INTERFACE,
9768                 .doit = nl80211_get_interface,
9769                 .dumpit = nl80211_dump_interface,
9770                 .policy = nl80211_policy,
9771                 /* can be retrieved by unprivileged users */
9772                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9773                                   NL80211_FLAG_NEED_RTNL,
9774         },
9775         {
9776                 .cmd = NL80211_CMD_SET_INTERFACE,
9777                 .doit = nl80211_set_interface,
9778                 .policy = nl80211_policy,
9779                 .flags = GENL_ADMIN_PERM,
9780                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9781                                   NL80211_FLAG_NEED_RTNL,
9782         },
9783         {
9784                 .cmd = NL80211_CMD_NEW_INTERFACE,
9785                 .doit = nl80211_new_interface,
9786                 .policy = nl80211_policy,
9787                 .flags = GENL_ADMIN_PERM,
9788                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
9789                                   NL80211_FLAG_NEED_RTNL,
9790         },
9791         {
9792                 .cmd = NL80211_CMD_DEL_INTERFACE,
9793                 .doit = nl80211_del_interface,
9794                 .policy = nl80211_policy,
9795                 .flags = GENL_ADMIN_PERM,
9796                 .internal_flags = NL80211_FLAG_NEED_WDEV |
9797                                   NL80211_FLAG_NEED_RTNL,
9798         },
9799         {
9800                 .cmd = NL80211_CMD_GET_KEY,
9801                 .doit = nl80211_get_key,
9802                 .policy = nl80211_policy,
9803                 .flags = GENL_ADMIN_PERM,
9804                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9805                                   NL80211_FLAG_NEED_RTNL,
9806         },
9807         {
9808                 .cmd = NL80211_CMD_SET_KEY,
9809                 .doit = nl80211_set_key,
9810                 .policy = nl80211_policy,
9811                 .flags = GENL_ADMIN_PERM,
9812                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9813                                   NL80211_FLAG_NEED_RTNL |
9814                                   NL80211_FLAG_CLEAR_SKB,
9815         },
9816         {
9817                 .cmd = NL80211_CMD_NEW_KEY,
9818                 .doit = nl80211_new_key,
9819                 .policy = nl80211_policy,
9820                 .flags = GENL_ADMIN_PERM,
9821                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9822                                   NL80211_FLAG_NEED_RTNL |
9823                                   NL80211_FLAG_CLEAR_SKB,
9824         },
9825         {
9826                 .cmd = NL80211_CMD_DEL_KEY,
9827                 .doit = nl80211_del_key,
9828                 .policy = nl80211_policy,
9829                 .flags = GENL_ADMIN_PERM,
9830                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9831                                   NL80211_FLAG_NEED_RTNL,
9832         },
9833         {
9834                 .cmd = NL80211_CMD_SET_BEACON,
9835                 .policy = nl80211_policy,
9836                 .flags = GENL_ADMIN_PERM,
9837                 .doit = nl80211_set_beacon,
9838                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9839                                   NL80211_FLAG_NEED_RTNL,
9840         },
9841         {
9842                 .cmd = NL80211_CMD_START_AP,
9843                 .policy = nl80211_policy,
9844                 .flags = GENL_ADMIN_PERM,
9845                 .doit = nl80211_start_ap,
9846                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9847                                   NL80211_FLAG_NEED_RTNL,
9848         },
9849         {
9850                 .cmd = NL80211_CMD_STOP_AP,
9851                 .policy = nl80211_policy,
9852                 .flags = GENL_ADMIN_PERM,
9853                 .doit = nl80211_stop_ap,
9854                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9855                                   NL80211_FLAG_NEED_RTNL,
9856         },
9857         {
9858                 .cmd = NL80211_CMD_GET_STATION,
9859                 .doit = nl80211_get_station,
9860                 .dumpit = nl80211_dump_station,
9861                 .policy = nl80211_policy,
9862                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
9863                                   NL80211_FLAG_NEED_RTNL,
9864         },
9865         {
9866                 .cmd = NL80211_CMD_SET_STATION,
9867                 .doit = nl80211_set_station,
9868                 .policy = nl80211_policy,
9869                 .flags = GENL_ADMIN_PERM,
9870                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9871                                   NL80211_FLAG_NEED_RTNL,
9872         },
9873         {
9874                 .cmd = NL80211_CMD_NEW_STATION,
9875                 .doit = nl80211_new_station,
9876                 .policy = nl80211_policy,
9877                 .flags = GENL_ADMIN_PERM,
9878                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9879                                   NL80211_FLAG_NEED_RTNL,
9880         },
9881         {
9882                 .cmd = NL80211_CMD_DEL_STATION,
9883                 .doit = nl80211_del_station,
9884                 .policy = nl80211_policy,
9885                 .flags = GENL_ADMIN_PERM,
9886                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9887                                   NL80211_FLAG_NEED_RTNL,
9888         },
9889         {
9890                 .cmd = NL80211_CMD_GET_MPATH,
9891                 .doit = nl80211_get_mpath,
9892                 .dumpit = nl80211_dump_mpath,
9893                 .policy = nl80211_policy,
9894                 .flags = GENL_ADMIN_PERM,
9895                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9896                                   NL80211_FLAG_NEED_RTNL,
9897         },
9898         {
9899                 .cmd = NL80211_CMD_GET_MPP,
9900                 .doit = nl80211_get_mpp,
9901                 .dumpit = nl80211_dump_mpp,
9902                 .policy = nl80211_policy,
9903                 .flags = GENL_ADMIN_PERM,
9904                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9905                                   NL80211_FLAG_NEED_RTNL,
9906         },
9907         {
9908                 .cmd = NL80211_CMD_SET_MPATH,
9909                 .doit = nl80211_set_mpath,
9910                 .policy = nl80211_policy,
9911                 .flags = GENL_ADMIN_PERM,
9912                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9913                                   NL80211_FLAG_NEED_RTNL,
9914         },
9915         {
9916                 .cmd = NL80211_CMD_NEW_MPATH,
9917                 .doit = nl80211_new_mpath,
9918                 .policy = nl80211_policy,
9919                 .flags = GENL_ADMIN_PERM,
9920                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9921                                   NL80211_FLAG_NEED_RTNL,
9922         },
9923         {
9924                 .cmd = NL80211_CMD_DEL_MPATH,
9925                 .doit = nl80211_del_mpath,
9926                 .policy = nl80211_policy,
9927                 .flags = GENL_ADMIN_PERM,
9928                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9929                                   NL80211_FLAG_NEED_RTNL,
9930         },
9931         {
9932                 .cmd = NL80211_CMD_SET_BSS,
9933                 .doit = nl80211_set_bss,
9934                 .policy = nl80211_policy,
9935                 .flags = GENL_ADMIN_PERM,
9936                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9937                                   NL80211_FLAG_NEED_RTNL,
9938         },
9939         {
9940                 .cmd = NL80211_CMD_GET_REG,
9941                 .doit = nl80211_get_reg,
9942                 .policy = nl80211_policy,
9943                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9944                 /* can be retrieved by unprivileged users */
9945         },
9946         {
9947                 .cmd = NL80211_CMD_SET_REG,
9948                 .doit = nl80211_set_reg,
9949                 .policy = nl80211_policy,
9950                 .flags = GENL_ADMIN_PERM,
9951                 .internal_flags = NL80211_FLAG_NEED_RTNL,
9952         },
9953         {
9954                 .cmd = NL80211_CMD_REQ_SET_REG,
9955                 .doit = nl80211_req_set_reg,
9956                 .policy = nl80211_policy,
9957                 .flags = GENL_ADMIN_PERM,
9958         },
9959         {
9960                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
9961                 .doit = nl80211_get_mesh_config,
9962                 .policy = nl80211_policy,
9963                 /* can be retrieved by unprivileged users */
9964                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9965                                   NL80211_FLAG_NEED_RTNL,
9966         },
9967         {
9968                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
9969                 .doit = nl80211_update_mesh_config,
9970                 .policy = nl80211_policy,
9971                 .flags = GENL_ADMIN_PERM,
9972                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9973                                   NL80211_FLAG_NEED_RTNL,
9974         },
9975         {
9976                 .cmd = NL80211_CMD_TRIGGER_SCAN,
9977                 .doit = nl80211_trigger_scan,
9978                 .policy = nl80211_policy,
9979                 .flags = GENL_ADMIN_PERM,
9980                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
9981                                   NL80211_FLAG_NEED_RTNL,
9982         },
9983         {
9984                 .cmd = NL80211_CMD_GET_SCAN,
9985                 .policy = nl80211_policy,
9986                 .dumpit = nl80211_dump_scan,
9987         },
9988         {
9989                 .cmd = NL80211_CMD_START_SCHED_SCAN,
9990                 .doit = nl80211_start_sched_scan,
9991                 .policy = nl80211_policy,
9992                 .flags = GENL_ADMIN_PERM,
9993                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
9994                                   NL80211_FLAG_NEED_RTNL,
9995         },
9996         {
9997                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
9998                 .doit = nl80211_stop_sched_scan,
9999                 .policy = nl80211_policy,
10000                 .flags = GENL_ADMIN_PERM,
10001                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10002                                   NL80211_FLAG_NEED_RTNL,
10003         },
10004         {
10005                 .cmd = NL80211_CMD_AUTHENTICATE,
10006                 .doit = nl80211_authenticate,
10007                 .policy = nl80211_policy,
10008                 .flags = GENL_ADMIN_PERM,
10009                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10010                                   NL80211_FLAG_NEED_RTNL |
10011                                   NL80211_FLAG_CLEAR_SKB,
10012         },
10013         {
10014                 .cmd = NL80211_CMD_ASSOCIATE,
10015                 .doit = nl80211_associate,
10016                 .policy = nl80211_policy,
10017                 .flags = GENL_ADMIN_PERM,
10018                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10019                                   NL80211_FLAG_NEED_RTNL,
10020         },
10021         {
10022                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10023                 .doit = nl80211_deauthenticate,
10024                 .policy = nl80211_policy,
10025                 .flags = GENL_ADMIN_PERM,
10026                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10027                                   NL80211_FLAG_NEED_RTNL,
10028         },
10029         {
10030                 .cmd = NL80211_CMD_DISASSOCIATE,
10031                 .doit = nl80211_disassociate,
10032                 .policy = nl80211_policy,
10033                 .flags = GENL_ADMIN_PERM,
10034                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10035                                   NL80211_FLAG_NEED_RTNL,
10036         },
10037         {
10038                 .cmd = NL80211_CMD_JOIN_IBSS,
10039                 .doit = nl80211_join_ibss,
10040                 .policy = nl80211_policy,
10041                 .flags = GENL_ADMIN_PERM,
10042                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10043                                   NL80211_FLAG_NEED_RTNL,
10044         },
10045         {
10046                 .cmd = NL80211_CMD_LEAVE_IBSS,
10047                 .doit = nl80211_leave_ibss,
10048                 .policy = nl80211_policy,
10049                 .flags = GENL_ADMIN_PERM,
10050                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10051                                   NL80211_FLAG_NEED_RTNL,
10052         },
10053 #ifdef CONFIG_NL80211_TESTMODE
10054         {
10055                 .cmd = NL80211_CMD_TESTMODE,
10056                 .doit = nl80211_testmode_do,
10057                 .dumpit = nl80211_testmode_dump,
10058                 .policy = nl80211_policy,
10059                 .flags = GENL_ADMIN_PERM,
10060                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10061                                   NL80211_FLAG_NEED_RTNL,
10062         },
10063 #endif
10064         {
10065                 .cmd = NL80211_CMD_CONNECT,
10066                 .doit = nl80211_connect,
10067                 .policy = nl80211_policy,
10068                 .flags = GENL_ADMIN_PERM,
10069                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10070                                   NL80211_FLAG_NEED_RTNL,
10071         },
10072         {
10073                 .cmd = NL80211_CMD_DISCONNECT,
10074                 .doit = nl80211_disconnect,
10075                 .policy = nl80211_policy,
10076                 .flags = GENL_ADMIN_PERM,
10077                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10078                                   NL80211_FLAG_NEED_RTNL,
10079         },
10080         {
10081                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10082                 .doit = nl80211_wiphy_netns,
10083                 .policy = nl80211_policy,
10084                 .flags = GENL_ADMIN_PERM,
10085                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10086                                   NL80211_FLAG_NEED_RTNL,
10087         },
10088         {
10089                 .cmd = NL80211_CMD_GET_SURVEY,
10090                 .policy = nl80211_policy,
10091                 .dumpit = nl80211_dump_survey,
10092         },
10093         {
10094                 .cmd = NL80211_CMD_SET_PMKSA,
10095                 .doit = nl80211_setdel_pmksa,
10096                 .policy = nl80211_policy,
10097                 .flags = GENL_ADMIN_PERM,
10098                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10099                                   NL80211_FLAG_NEED_RTNL,
10100         },
10101         {
10102                 .cmd = NL80211_CMD_DEL_PMKSA,
10103                 .doit = nl80211_setdel_pmksa,
10104                 .policy = nl80211_policy,
10105                 .flags = GENL_ADMIN_PERM,
10106                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10107                                   NL80211_FLAG_NEED_RTNL,
10108         },
10109         {
10110                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10111                 .doit = nl80211_flush_pmksa,
10112                 .policy = nl80211_policy,
10113                 .flags = GENL_ADMIN_PERM,
10114                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10115                                   NL80211_FLAG_NEED_RTNL,
10116         },
10117         {
10118                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10119                 .doit = nl80211_remain_on_channel,
10120                 .policy = nl80211_policy,
10121                 .flags = GENL_ADMIN_PERM,
10122                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10123                                   NL80211_FLAG_NEED_RTNL,
10124         },
10125         {
10126                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10127                 .doit = nl80211_cancel_remain_on_channel,
10128                 .policy = nl80211_policy,
10129                 .flags = GENL_ADMIN_PERM,
10130                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10131                                   NL80211_FLAG_NEED_RTNL,
10132         },
10133         {
10134                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10135                 .doit = nl80211_set_tx_bitrate_mask,
10136                 .policy = nl80211_policy,
10137                 .flags = GENL_ADMIN_PERM,
10138                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10139                                   NL80211_FLAG_NEED_RTNL,
10140         },
10141         {
10142                 .cmd = NL80211_CMD_REGISTER_FRAME,
10143                 .doit = nl80211_register_mgmt,
10144                 .policy = nl80211_policy,
10145                 .flags = GENL_ADMIN_PERM,
10146                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10147                                   NL80211_FLAG_NEED_RTNL,
10148         },
10149         {
10150                 .cmd = NL80211_CMD_FRAME,
10151                 .doit = nl80211_tx_mgmt,
10152                 .policy = nl80211_policy,
10153                 .flags = GENL_ADMIN_PERM,
10154                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10155                                   NL80211_FLAG_NEED_RTNL,
10156         },
10157         {
10158                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10159                 .doit = nl80211_tx_mgmt_cancel_wait,
10160                 .policy = nl80211_policy,
10161                 .flags = GENL_ADMIN_PERM,
10162                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10163                                   NL80211_FLAG_NEED_RTNL,
10164         },
10165         {
10166                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10167                 .doit = nl80211_set_power_save,
10168                 .policy = nl80211_policy,
10169                 .flags = GENL_ADMIN_PERM,
10170                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10171                                   NL80211_FLAG_NEED_RTNL,
10172         },
10173         {
10174                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10175                 .doit = nl80211_get_power_save,
10176                 .policy = nl80211_policy,
10177                 /* can be retrieved by unprivileged users */
10178                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10179                                   NL80211_FLAG_NEED_RTNL,
10180         },
10181         {
10182                 .cmd = NL80211_CMD_SET_CQM,
10183                 .doit = nl80211_set_cqm,
10184                 .policy = nl80211_policy,
10185                 .flags = GENL_ADMIN_PERM,
10186                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10187                                   NL80211_FLAG_NEED_RTNL,
10188         },
10189         {
10190                 .cmd = NL80211_CMD_SET_CHANNEL,
10191                 .doit = nl80211_set_channel,
10192                 .policy = nl80211_policy,
10193                 .flags = GENL_ADMIN_PERM,
10194                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10195                                   NL80211_FLAG_NEED_RTNL,
10196         },
10197         {
10198                 .cmd = NL80211_CMD_SET_WDS_PEER,
10199                 .doit = nl80211_set_wds_peer,
10200                 .policy = nl80211_policy,
10201                 .flags = GENL_ADMIN_PERM,
10202                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10203                                   NL80211_FLAG_NEED_RTNL,
10204         },
10205         {
10206                 .cmd = NL80211_CMD_JOIN_MESH,
10207                 .doit = nl80211_join_mesh,
10208                 .policy = nl80211_policy,
10209                 .flags = GENL_ADMIN_PERM,
10210                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10211                                   NL80211_FLAG_NEED_RTNL,
10212         },
10213         {
10214                 .cmd = NL80211_CMD_LEAVE_MESH,
10215                 .doit = nl80211_leave_mesh,
10216                 .policy = nl80211_policy,
10217                 .flags = GENL_ADMIN_PERM,
10218                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10219                                   NL80211_FLAG_NEED_RTNL,
10220         },
10221 #ifdef CONFIG_PM
10222         {
10223                 .cmd = NL80211_CMD_GET_WOWLAN,
10224                 .doit = nl80211_get_wowlan,
10225                 .policy = nl80211_policy,
10226                 /* can be retrieved by unprivileged users */
10227                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10228                                   NL80211_FLAG_NEED_RTNL,
10229         },
10230         {
10231                 .cmd = NL80211_CMD_SET_WOWLAN,
10232                 .doit = nl80211_set_wowlan,
10233                 .policy = nl80211_policy,
10234                 .flags = GENL_ADMIN_PERM,
10235                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10236                                   NL80211_FLAG_NEED_RTNL,
10237         },
10238 #endif
10239         {
10240                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10241                 .doit = nl80211_set_rekey_data,
10242                 .policy = nl80211_policy,
10243                 .flags = GENL_ADMIN_PERM,
10244                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10245                                   NL80211_FLAG_NEED_RTNL |
10246                                   NL80211_FLAG_CLEAR_SKB,
10247         },
10248         {
10249                 .cmd = NL80211_CMD_TDLS_MGMT,
10250                 .doit = nl80211_tdls_mgmt,
10251                 .policy = nl80211_policy,
10252                 .flags = GENL_ADMIN_PERM,
10253                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10254                                   NL80211_FLAG_NEED_RTNL,
10255         },
10256         {
10257                 .cmd = NL80211_CMD_TDLS_OPER,
10258                 .doit = nl80211_tdls_oper,
10259                 .policy = nl80211_policy,
10260                 .flags = GENL_ADMIN_PERM,
10261                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10262                                   NL80211_FLAG_NEED_RTNL,
10263         },
10264         {
10265                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10266                 .doit = nl80211_register_unexpected_frame,
10267                 .policy = nl80211_policy,
10268                 .flags = GENL_ADMIN_PERM,
10269                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10270                                   NL80211_FLAG_NEED_RTNL,
10271         },
10272         {
10273                 .cmd = NL80211_CMD_PROBE_CLIENT,
10274                 .doit = nl80211_probe_client,
10275                 .policy = nl80211_policy,
10276                 .flags = GENL_ADMIN_PERM,
10277                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10278                                   NL80211_FLAG_NEED_RTNL,
10279         },
10280         {
10281                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10282                 .doit = nl80211_register_beacons,
10283                 .policy = nl80211_policy,
10284                 .flags = GENL_ADMIN_PERM,
10285                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10286                                   NL80211_FLAG_NEED_RTNL,
10287         },
10288         {
10289                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10290                 .doit = nl80211_set_noack_map,
10291                 .policy = nl80211_policy,
10292                 .flags = GENL_ADMIN_PERM,
10293                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10294                                   NL80211_FLAG_NEED_RTNL,
10295         },
10296         {
10297                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10298                 .doit = nl80211_start_p2p_device,
10299                 .policy = nl80211_policy,
10300                 .flags = GENL_ADMIN_PERM,
10301                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10302                                   NL80211_FLAG_NEED_RTNL,
10303         },
10304         {
10305                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10306                 .doit = nl80211_stop_p2p_device,
10307                 .policy = nl80211_policy,
10308                 .flags = GENL_ADMIN_PERM,
10309                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10310                                   NL80211_FLAG_NEED_RTNL,
10311         },
10312         {
10313                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10314                 .doit = nl80211_set_mcast_rate,
10315                 .policy = nl80211_policy,
10316                 .flags = GENL_ADMIN_PERM,
10317                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10318                                   NL80211_FLAG_NEED_RTNL,
10319         },
10320         {
10321                 .cmd = NL80211_CMD_SET_MAC_ACL,
10322                 .doit = nl80211_set_mac_acl,
10323                 .policy = nl80211_policy,
10324                 .flags = GENL_ADMIN_PERM,
10325                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10326                                   NL80211_FLAG_NEED_RTNL,
10327         },
10328         {
10329                 .cmd = NL80211_CMD_RADAR_DETECT,
10330                 .doit = nl80211_start_radar_detection,
10331                 .policy = nl80211_policy,
10332                 .flags = GENL_ADMIN_PERM,
10333                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10334                                   NL80211_FLAG_NEED_RTNL,
10335         },
10336         {
10337                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10338                 .doit = nl80211_get_protocol_features,
10339                 .policy = nl80211_policy,
10340         },
10341         {
10342                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10343                 .doit = nl80211_update_ft_ies,
10344                 .policy = nl80211_policy,
10345                 .flags = GENL_ADMIN_PERM,
10346                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10347                                   NL80211_FLAG_NEED_RTNL,
10348         },
10349         {
10350                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10351                 .doit = nl80211_crit_protocol_start,
10352                 .policy = nl80211_policy,
10353                 .flags = GENL_ADMIN_PERM,
10354                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10355                                   NL80211_FLAG_NEED_RTNL,
10356         },
10357         {
10358                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10359                 .doit = nl80211_crit_protocol_stop,
10360                 .policy = nl80211_policy,
10361                 .flags = GENL_ADMIN_PERM,
10362                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10363                                   NL80211_FLAG_NEED_RTNL,
10364         },
10365         {
10366                 .cmd = NL80211_CMD_GET_COALESCE,
10367                 .doit = nl80211_get_coalesce,
10368                 .policy = nl80211_policy,
10369                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10370                                   NL80211_FLAG_NEED_RTNL,
10371         },
10372         {
10373                 .cmd = NL80211_CMD_SET_COALESCE,
10374                 .doit = nl80211_set_coalesce,
10375                 .policy = nl80211_policy,
10376                 .flags = GENL_ADMIN_PERM,
10377                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10378                                   NL80211_FLAG_NEED_RTNL,
10379         },
10380         {
10381                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10382                 .doit = nl80211_channel_switch,
10383                 .policy = nl80211_policy,
10384                 .flags = GENL_ADMIN_PERM,
10385                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10386                                   NL80211_FLAG_NEED_RTNL,
10387         },
10388         {
10389                 .cmd = NL80211_CMD_VENDOR,
10390                 .doit = nl80211_vendor_cmd,
10391                 .policy = nl80211_policy,
10392                 .flags = GENL_ADMIN_PERM,
10393                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10394                                   NL80211_FLAG_NEED_RTNL,
10395         },
10396         {
10397                 .cmd = NL80211_CMD_SET_QOS_MAP,
10398                 .doit = nl80211_set_qos_map,
10399                 .policy = nl80211_policy,
10400                 .flags = GENL_ADMIN_PERM,
10401                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10402                                   NL80211_FLAG_NEED_RTNL,
10403         },
10404         {
10405                 .cmd = NL80211_CMD_ADD_TX_TS,
10406                 .doit = nl80211_add_tx_ts,
10407                 .policy = nl80211_policy,
10408                 .flags = GENL_ADMIN_PERM,
10409                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10410                                   NL80211_FLAG_NEED_RTNL,
10411         },
10412         {
10413                 .cmd = NL80211_CMD_DEL_TX_TS,
10414                 .doit = nl80211_del_tx_ts,
10415                 .policy = nl80211_policy,
10416                 .flags = GENL_ADMIN_PERM,
10417                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10418                                   NL80211_FLAG_NEED_RTNL,
10419         },
10420 };
10421
10422 /* notification functions */
10423
10424 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10425                           enum nl80211_commands cmd)
10426 {
10427         struct sk_buff *msg;
10428         struct nl80211_dump_wiphy_state state = {};
10429
10430         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10431                 cmd != NL80211_CMD_DEL_WIPHY);
10432
10433         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10434         if (!msg)
10435                 return;
10436
10437         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10438                 nlmsg_free(msg);
10439                 return;
10440         }
10441
10442         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10443                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10444 }
10445
10446 static int nl80211_add_scan_req(struct sk_buff *msg,
10447                                 struct cfg80211_registered_device *rdev)
10448 {
10449         struct cfg80211_scan_request *req = rdev->scan_req;
10450         struct nlattr *nest;
10451         int i;
10452
10453         if (WARN_ON(!req))
10454                 return 0;
10455
10456         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10457         if (!nest)
10458                 goto nla_put_failure;
10459         for (i = 0; i < req->n_ssids; i++) {
10460                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10461                         goto nla_put_failure;
10462         }
10463         nla_nest_end(msg, nest);
10464
10465         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10466         if (!nest)
10467                 goto nla_put_failure;
10468         for (i = 0; i < req->n_channels; i++) {
10469                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10470                         goto nla_put_failure;
10471         }
10472         nla_nest_end(msg, nest);
10473
10474         if (req->ie &&
10475             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10476                 goto nla_put_failure;
10477
10478         if (req->flags &&
10479             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10480                 goto nla_put_failure;
10481
10482         return 0;
10483  nla_put_failure:
10484         return -ENOBUFS;
10485 }
10486
10487 static int nl80211_send_scan_msg(struct sk_buff *msg,
10488                                  struct cfg80211_registered_device *rdev,
10489                                  struct wireless_dev *wdev,
10490                                  u32 portid, u32 seq, int flags,
10491                                  u32 cmd)
10492 {
10493         void *hdr;
10494
10495         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10496         if (!hdr)
10497                 return -1;
10498
10499         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10500             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10501                                          wdev->netdev->ifindex)) ||
10502             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10503                 goto nla_put_failure;
10504
10505         /* ignore errors and send incomplete event anyway */
10506         nl80211_add_scan_req(msg, rdev);
10507
10508         return genlmsg_end(msg, hdr);
10509
10510  nla_put_failure:
10511         genlmsg_cancel(msg, hdr);
10512         return -EMSGSIZE;
10513 }
10514
10515 static int
10516 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10517                             struct cfg80211_registered_device *rdev,
10518                             struct net_device *netdev,
10519                             u32 portid, u32 seq, int flags, u32 cmd)
10520 {
10521         void *hdr;
10522
10523         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10524         if (!hdr)
10525                 return -1;
10526
10527         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10528             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10529                 goto nla_put_failure;
10530
10531         return genlmsg_end(msg, hdr);
10532
10533  nla_put_failure:
10534         genlmsg_cancel(msg, hdr);
10535         return -EMSGSIZE;
10536 }
10537
10538 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10539                              struct wireless_dev *wdev)
10540 {
10541         struct sk_buff *msg;
10542
10543         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10544         if (!msg)
10545                 return;
10546
10547         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10548                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
10549                 nlmsg_free(msg);
10550                 return;
10551         }
10552
10553         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10554                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10555 }
10556
10557 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10558                                        struct wireless_dev *wdev, bool aborted)
10559 {
10560         struct sk_buff *msg;
10561
10562         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10563         if (!msg)
10564                 return NULL;
10565
10566         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10567                                   aborted ? NL80211_CMD_SCAN_ABORTED :
10568                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10569                 nlmsg_free(msg);
10570                 return NULL;
10571         }
10572
10573         return msg;
10574 }
10575
10576 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
10577                               struct sk_buff *msg)
10578 {
10579         if (!msg)
10580                 return;
10581
10582         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10583                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10584 }
10585
10586 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
10587                                      struct net_device *netdev)
10588 {
10589         struct sk_buff *msg;
10590
10591         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10592         if (!msg)
10593                 return;
10594
10595         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
10596                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
10597                 nlmsg_free(msg);
10598                 return;
10599         }
10600
10601         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10602                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10603 }
10604
10605 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
10606                              struct net_device *netdev, u32 cmd)
10607 {
10608         struct sk_buff *msg;
10609
10610         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10611         if (!msg)
10612                 return;
10613
10614         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
10615                 nlmsg_free(msg);
10616                 return;
10617         }
10618
10619         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10620                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10621 }
10622
10623 /*
10624  * This can happen on global regulatory changes or device specific settings
10625  * based on custom world regulatory domains.
10626  */
10627 void nl80211_send_reg_change_event(struct regulatory_request *request)
10628 {
10629         struct sk_buff *msg;
10630         void *hdr;
10631
10632         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10633         if (!msg)
10634                 return;
10635
10636         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE);
10637         if (!hdr) {
10638                 nlmsg_free(msg);
10639                 return;
10640         }
10641
10642         /* Userspace can always count this one always being set */
10643         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
10644                 goto nla_put_failure;
10645
10646         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
10647                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10648                                NL80211_REGDOM_TYPE_WORLD))
10649                         goto nla_put_failure;
10650         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
10651                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10652                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
10653                         goto nla_put_failure;
10654         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
10655                    request->intersect) {
10656                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10657                                NL80211_REGDOM_TYPE_INTERSECTION))
10658                         goto nla_put_failure;
10659         } else {
10660                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
10661                                NL80211_REGDOM_TYPE_COUNTRY) ||
10662                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
10663                                    request->alpha2))
10664                         goto nla_put_failure;
10665         }
10666
10667         if (request->wiphy_idx != WIPHY_IDX_INVALID &&
10668             nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
10669                 goto nla_put_failure;
10670
10671         genlmsg_end(msg, hdr);
10672
10673         rcu_read_lock();
10674         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
10675                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
10676         rcu_read_unlock();
10677
10678         return;
10679
10680 nla_put_failure:
10681         genlmsg_cancel(msg, hdr);
10682         nlmsg_free(msg);
10683 }
10684
10685 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
10686                                     struct net_device *netdev,
10687                                     const u8 *buf, size_t len,
10688                                     enum nl80211_commands cmd, gfp_t gfp,
10689                                     int uapsd_queues)
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, cmd);
10699         if (!hdr) {
10700                 nlmsg_free(msg);
10701                 return;
10702         }
10703
10704         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10705             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10706             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
10707                 goto nla_put_failure;
10708
10709         if (uapsd_queues >= 0) {
10710                 struct nlattr *nla_wmm =
10711                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
10712                 if (!nla_wmm)
10713                         goto nla_put_failure;
10714
10715                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
10716                                uapsd_queues))
10717                         goto nla_put_failure;
10718
10719                 nla_nest_end(msg, nla_wmm);
10720         }
10721
10722         genlmsg_end(msg, hdr);
10723
10724         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10725                                 NL80211_MCGRP_MLME, gfp);
10726         return;
10727
10728  nla_put_failure:
10729         genlmsg_cancel(msg, hdr);
10730         nlmsg_free(msg);
10731 }
10732
10733 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
10734                           struct net_device *netdev, const u8 *buf,
10735                           size_t len, gfp_t gfp)
10736 {
10737         nl80211_send_mlme_event(rdev, netdev, buf, len,
10738                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
10739 }
10740
10741 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
10742                            struct net_device *netdev, const u8 *buf,
10743                            size_t len, gfp_t gfp, int uapsd_queues)
10744 {
10745         nl80211_send_mlme_event(rdev, netdev, buf, len,
10746                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
10747 }
10748
10749 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
10750                          struct net_device *netdev, const u8 *buf,
10751                          size_t len, gfp_t gfp)
10752 {
10753         nl80211_send_mlme_event(rdev, netdev, buf, len,
10754                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
10755 }
10756
10757 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
10758                            struct net_device *netdev, const u8 *buf,
10759                            size_t len, gfp_t gfp)
10760 {
10761         nl80211_send_mlme_event(rdev, netdev, buf, len,
10762                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
10763 }
10764
10765 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
10766                                   size_t len)
10767 {
10768         struct wireless_dev *wdev = dev->ieee80211_ptr;
10769         struct wiphy *wiphy = wdev->wiphy;
10770         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10771         const struct ieee80211_mgmt *mgmt = (void *)buf;
10772         u32 cmd;
10773
10774         if (WARN_ON(len < 2))
10775                 return;
10776
10777         if (ieee80211_is_deauth(mgmt->frame_control))
10778                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
10779         else
10780                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
10781
10782         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
10783         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
10784 }
10785 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
10786
10787 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
10788                                       struct net_device *netdev, int cmd,
10789                                       const u8 *addr, gfp_t gfp)
10790 {
10791         struct sk_buff *msg;
10792         void *hdr;
10793
10794         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10795         if (!msg)
10796                 return;
10797
10798         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
10799         if (!hdr) {
10800                 nlmsg_free(msg);
10801                 return;
10802         }
10803
10804         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10805             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10806             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
10807             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
10808                 goto nla_put_failure;
10809
10810         genlmsg_end(msg, hdr);
10811
10812         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10813                                 NL80211_MCGRP_MLME, gfp);
10814         return;
10815
10816  nla_put_failure:
10817         genlmsg_cancel(msg, hdr);
10818         nlmsg_free(msg);
10819 }
10820
10821 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
10822                                struct net_device *netdev, const u8 *addr,
10823                                gfp_t gfp)
10824 {
10825         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
10826                                   addr, gfp);
10827 }
10828
10829 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
10830                                 struct net_device *netdev, const u8 *addr,
10831                                 gfp_t gfp)
10832 {
10833         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
10834                                   addr, gfp);
10835 }
10836
10837 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
10838                                  struct net_device *netdev, const u8 *bssid,
10839                                  const u8 *req_ie, size_t req_ie_len,
10840                                  const u8 *resp_ie, size_t resp_ie_len,
10841                                  u16 status, gfp_t gfp)
10842 {
10843         struct sk_buff *msg;
10844         void *hdr;
10845
10846         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10847         if (!msg)
10848                 return;
10849
10850         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
10851         if (!hdr) {
10852                 nlmsg_free(msg);
10853                 return;
10854         }
10855
10856         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10857             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10858             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
10859             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
10860             (req_ie &&
10861              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10862             (resp_ie &&
10863              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10864                 goto nla_put_failure;
10865
10866         genlmsg_end(msg, hdr);
10867
10868         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10869                                 NL80211_MCGRP_MLME, gfp);
10870         return;
10871
10872  nla_put_failure:
10873         genlmsg_cancel(msg, hdr);
10874         nlmsg_free(msg);
10875
10876 }
10877
10878 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
10879                          struct net_device *netdev, const u8 *bssid,
10880                          const u8 *req_ie, size_t req_ie_len,
10881                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
10882 {
10883         struct sk_buff *msg;
10884         void *hdr;
10885
10886         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10887         if (!msg)
10888                 return;
10889
10890         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
10891         if (!hdr) {
10892                 nlmsg_free(msg);
10893                 return;
10894         }
10895
10896         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10897             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10898             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
10899             (req_ie &&
10900              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
10901             (resp_ie &&
10902              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
10903                 goto nla_put_failure;
10904
10905         genlmsg_end(msg, hdr);
10906
10907         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10908                                 NL80211_MCGRP_MLME, gfp);
10909         return;
10910
10911  nla_put_failure:
10912         genlmsg_cancel(msg, hdr);
10913         nlmsg_free(msg);
10914
10915 }
10916
10917 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
10918                                struct net_device *netdev, u16 reason,
10919                                const u8 *ie, size_t ie_len, bool from_ap)
10920 {
10921         struct sk_buff *msg;
10922         void *hdr;
10923
10924         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10925         if (!msg)
10926                 return;
10927
10928         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
10929         if (!hdr) {
10930                 nlmsg_free(msg);
10931                 return;
10932         }
10933
10934         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10935             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10936             (from_ap && reason &&
10937              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
10938             (from_ap &&
10939              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
10940             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
10941                 goto nla_put_failure;
10942
10943         genlmsg_end(msg, hdr);
10944
10945         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10946                                 NL80211_MCGRP_MLME, GFP_KERNEL);
10947         return;
10948
10949  nla_put_failure:
10950         genlmsg_cancel(msg, hdr);
10951         nlmsg_free(msg);
10952
10953 }
10954
10955 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
10956                              struct net_device *netdev, const u8 *bssid,
10957                              gfp_t gfp)
10958 {
10959         struct sk_buff *msg;
10960         void *hdr;
10961
10962         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
10963         if (!msg)
10964                 return;
10965
10966         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
10967         if (!hdr) {
10968                 nlmsg_free(msg);
10969                 return;
10970         }
10971
10972         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10973             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
10974             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
10975                 goto nla_put_failure;
10976
10977         genlmsg_end(msg, hdr);
10978
10979         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10980                                 NL80211_MCGRP_MLME, gfp);
10981         return;
10982
10983  nla_put_failure:
10984         genlmsg_cancel(msg, hdr);
10985         nlmsg_free(msg);
10986 }
10987
10988 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
10989                                         const u8* ie, u8 ie_len, gfp_t gfp)
10990 {
10991         struct wireless_dev *wdev = dev->ieee80211_ptr;
10992         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
10993         struct sk_buff *msg;
10994         void *hdr;
10995
10996         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
10997                 return;
10998
10999         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11000
11001         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11002         if (!msg)
11003                 return;
11004
11005         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11006         if (!hdr) {
11007                 nlmsg_free(msg);
11008                 return;
11009         }
11010
11011         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11012             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11013             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11014             (ie_len && ie &&
11015              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11016                 goto nla_put_failure;
11017
11018         genlmsg_end(msg, hdr);
11019
11020         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11021                                 NL80211_MCGRP_MLME, gfp);
11022         return;
11023
11024  nla_put_failure:
11025         genlmsg_cancel(msg, hdr);
11026         nlmsg_free(msg);
11027 }
11028 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11029
11030 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11031                                  struct net_device *netdev, const u8 *addr,
11032                                  enum nl80211_key_type key_type, int key_id,
11033                                  const u8 *tsc, gfp_t gfp)
11034 {
11035         struct sk_buff *msg;
11036         void *hdr;
11037
11038         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11039         if (!msg)
11040                 return;
11041
11042         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11043         if (!hdr) {
11044                 nlmsg_free(msg);
11045                 return;
11046         }
11047
11048         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11049             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11050             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11051             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11052             (key_id != -1 &&
11053              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11054             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11055                 goto nla_put_failure;
11056
11057         genlmsg_end(msg, hdr);
11058
11059         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11060                                 NL80211_MCGRP_MLME, gfp);
11061         return;
11062
11063  nla_put_failure:
11064         genlmsg_cancel(msg, hdr);
11065         nlmsg_free(msg);
11066 }
11067
11068 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11069                                     struct ieee80211_channel *channel_before,
11070                                     struct ieee80211_channel *channel_after)
11071 {
11072         struct sk_buff *msg;
11073         void *hdr;
11074         struct nlattr *nl_freq;
11075
11076         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11077         if (!msg)
11078                 return;
11079
11080         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11081         if (!hdr) {
11082                 nlmsg_free(msg);
11083                 return;
11084         }
11085
11086         /*
11087          * Since we are applying the beacon hint to a wiphy we know its
11088          * wiphy_idx is valid
11089          */
11090         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11091                 goto nla_put_failure;
11092
11093         /* Before */
11094         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11095         if (!nl_freq)
11096                 goto nla_put_failure;
11097         if (nl80211_msg_put_channel(msg, channel_before, false))
11098                 goto nla_put_failure;
11099         nla_nest_end(msg, nl_freq);
11100
11101         /* After */
11102         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11103         if (!nl_freq)
11104                 goto nla_put_failure;
11105         if (nl80211_msg_put_channel(msg, channel_after, false))
11106                 goto nla_put_failure;
11107         nla_nest_end(msg, nl_freq);
11108
11109         genlmsg_end(msg, hdr);
11110
11111         rcu_read_lock();
11112         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11113                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11114         rcu_read_unlock();
11115
11116         return;
11117
11118 nla_put_failure:
11119         genlmsg_cancel(msg, hdr);
11120         nlmsg_free(msg);
11121 }
11122
11123 static void nl80211_send_remain_on_chan_event(
11124         int cmd, struct cfg80211_registered_device *rdev,
11125         struct wireless_dev *wdev, u64 cookie,
11126         struct ieee80211_channel *chan,
11127         unsigned int duration, gfp_t gfp)
11128 {
11129         struct sk_buff *msg;
11130         void *hdr;
11131
11132         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11133         if (!msg)
11134                 return;
11135
11136         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11137         if (!hdr) {
11138                 nlmsg_free(msg);
11139                 return;
11140         }
11141
11142         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11143             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11144                                          wdev->netdev->ifindex)) ||
11145             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11146             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11147             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11148                         NL80211_CHAN_NO_HT) ||
11149             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11150                 goto nla_put_failure;
11151
11152         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11153             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11154                 goto nla_put_failure;
11155
11156         genlmsg_end(msg, hdr);
11157
11158         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11159                                 NL80211_MCGRP_MLME, gfp);
11160         return;
11161
11162  nla_put_failure:
11163         genlmsg_cancel(msg, hdr);
11164         nlmsg_free(msg);
11165 }
11166
11167 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11168                                struct ieee80211_channel *chan,
11169                                unsigned int duration, gfp_t gfp)
11170 {
11171         struct wiphy *wiphy = wdev->wiphy;
11172         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11173
11174         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11175         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11176                                           rdev, wdev, cookie, chan,
11177                                           duration, gfp);
11178 }
11179 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11180
11181 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11182                                         struct ieee80211_channel *chan,
11183                                         gfp_t gfp)
11184 {
11185         struct wiphy *wiphy = wdev->wiphy;
11186         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11187
11188         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11189         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11190                                           rdev, wdev, cookie, chan, 0, gfp);
11191 }
11192 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11193
11194 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11195                       struct station_info *sinfo, gfp_t gfp)
11196 {
11197         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11198         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11199         struct sk_buff *msg;
11200
11201         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11202
11203         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11204         if (!msg)
11205                 return;
11206
11207         if (nl80211_send_station(msg, 0, 0, 0,
11208                                  rdev, dev, mac_addr, sinfo) < 0) {
11209                 nlmsg_free(msg);
11210                 return;
11211         }
11212
11213         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11214                                 NL80211_MCGRP_MLME, gfp);
11215 }
11216 EXPORT_SYMBOL(cfg80211_new_sta);
11217
11218 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp)
11219 {
11220         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11221         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11222         struct sk_buff *msg;
11223         void *hdr;
11224
11225         trace_cfg80211_del_sta(dev, mac_addr);
11226
11227         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11228         if (!msg)
11229                 return;
11230
11231         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION);
11232         if (!hdr) {
11233                 nlmsg_free(msg);
11234                 return;
11235         }
11236
11237         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11238             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
11239                 goto nla_put_failure;
11240
11241         genlmsg_end(msg, hdr);
11242
11243         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11244                                 NL80211_MCGRP_MLME, gfp);
11245         return;
11246
11247  nla_put_failure:
11248         genlmsg_cancel(msg, hdr);
11249         nlmsg_free(msg);
11250 }
11251 EXPORT_SYMBOL(cfg80211_del_sta);
11252
11253 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11254                           enum nl80211_connect_failed_reason reason,
11255                           gfp_t gfp)
11256 {
11257         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11258         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11259         struct sk_buff *msg;
11260         void *hdr;
11261
11262         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11263         if (!msg)
11264                 return;
11265
11266         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11267         if (!hdr) {
11268                 nlmsg_free(msg);
11269                 return;
11270         }
11271
11272         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11273             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11274             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11275                 goto nla_put_failure;
11276
11277         genlmsg_end(msg, hdr);
11278
11279         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11280                                 NL80211_MCGRP_MLME, gfp);
11281         return;
11282
11283  nla_put_failure:
11284         genlmsg_cancel(msg, hdr);
11285         nlmsg_free(msg);
11286 }
11287 EXPORT_SYMBOL(cfg80211_conn_failed);
11288
11289 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11290                                        const u8 *addr, gfp_t gfp)
11291 {
11292         struct wireless_dev *wdev = dev->ieee80211_ptr;
11293         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11294         struct sk_buff *msg;
11295         void *hdr;
11296         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11297
11298         if (!nlportid)
11299                 return false;
11300
11301         msg = nlmsg_new(100, gfp);
11302         if (!msg)
11303                 return true;
11304
11305         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11306         if (!hdr) {
11307                 nlmsg_free(msg);
11308                 return true;
11309         }
11310
11311         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11312             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11313             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11314                 goto nla_put_failure;
11315
11316         genlmsg_end(msg, hdr);
11317         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11318         return true;
11319
11320  nla_put_failure:
11321         genlmsg_cancel(msg, hdr);
11322         nlmsg_free(msg);
11323         return true;
11324 }
11325
11326 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11327                                 const u8 *addr, gfp_t gfp)
11328 {
11329         struct wireless_dev *wdev = dev->ieee80211_ptr;
11330         bool ret;
11331
11332         trace_cfg80211_rx_spurious_frame(dev, addr);
11333
11334         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11335                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11336                 trace_cfg80211_return_bool(false);
11337                 return false;
11338         }
11339         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11340                                          addr, gfp);
11341         trace_cfg80211_return_bool(ret);
11342         return ret;
11343 }
11344 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11345
11346 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11347                                         const u8 *addr, gfp_t gfp)
11348 {
11349         struct wireless_dev *wdev = dev->ieee80211_ptr;
11350         bool ret;
11351
11352         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11353
11354         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11355                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11356                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11357                 trace_cfg80211_return_bool(false);
11358                 return false;
11359         }
11360         ret = __nl80211_unexpected_frame(dev,
11361                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11362                                          addr, gfp);
11363         trace_cfg80211_return_bool(ret);
11364         return ret;
11365 }
11366 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11367
11368 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11369                       struct wireless_dev *wdev, u32 nlportid,
11370                       int freq, int sig_dbm,
11371                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11372 {
11373         struct net_device *netdev = wdev->netdev;
11374         struct sk_buff *msg;
11375         void *hdr;
11376
11377         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11378         if (!msg)
11379                 return -ENOMEM;
11380
11381         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11382         if (!hdr) {
11383                 nlmsg_free(msg);
11384                 return -ENOMEM;
11385         }
11386
11387         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11388             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11389                                         netdev->ifindex)) ||
11390             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11391             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11392             (sig_dbm &&
11393              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11394             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11395             (flags &&
11396              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11397                 goto nla_put_failure;
11398
11399         genlmsg_end(msg, hdr);
11400
11401         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11402
11403  nla_put_failure:
11404         genlmsg_cancel(msg, hdr);
11405         nlmsg_free(msg);
11406         return -ENOBUFS;
11407 }
11408
11409 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11410                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11411 {
11412         struct wiphy *wiphy = wdev->wiphy;
11413         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11414         struct net_device *netdev = wdev->netdev;
11415         struct sk_buff *msg;
11416         void *hdr;
11417
11418         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11419
11420         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11421         if (!msg)
11422                 return;
11423
11424         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11425         if (!hdr) {
11426                 nlmsg_free(msg);
11427                 return;
11428         }
11429
11430         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11431             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11432                                    netdev->ifindex)) ||
11433             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11434             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11435             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11436             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11437                 goto nla_put_failure;
11438
11439         genlmsg_end(msg, hdr);
11440
11441         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11442                                 NL80211_MCGRP_MLME, gfp);
11443         return;
11444
11445  nla_put_failure:
11446         genlmsg_cancel(msg, hdr);
11447         nlmsg_free(msg);
11448 }
11449 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11450
11451 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11452                               enum nl80211_cqm_rssi_threshold_event rssi_event,
11453                               gfp_t gfp)
11454 {
11455         struct wireless_dev *wdev = dev->ieee80211_ptr;
11456         struct wiphy *wiphy = wdev->wiphy;
11457         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11458         struct sk_buff *msg;
11459         struct nlattr *pinfoattr;
11460         void *hdr;
11461
11462         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11463
11464         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11465         if (!msg)
11466                 return;
11467
11468         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11469         if (!hdr) {
11470                 nlmsg_free(msg);
11471                 return;
11472         }
11473
11474         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11475             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11476                 goto nla_put_failure;
11477
11478         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11479         if (!pinfoattr)
11480                 goto nla_put_failure;
11481
11482         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11483                         rssi_event))
11484                 goto nla_put_failure;
11485
11486         nla_nest_end(msg, pinfoattr);
11487
11488         genlmsg_end(msg, hdr);
11489
11490         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11491                                 NL80211_MCGRP_MLME, gfp);
11492         return;
11493
11494  nla_put_failure:
11495         genlmsg_cancel(msg, hdr);
11496         nlmsg_free(msg);
11497 }
11498 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11499
11500 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
11501                                      struct net_device *netdev, const u8 *bssid,
11502                                      const u8 *replay_ctr, gfp_t gfp)
11503 {
11504         struct sk_buff *msg;
11505         struct nlattr *rekey_attr;
11506         void *hdr;
11507
11508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11509         if (!msg)
11510                 return;
11511
11512         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
11513         if (!hdr) {
11514                 nlmsg_free(msg);
11515                 return;
11516         }
11517
11518         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11519             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11520             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11521                 goto nla_put_failure;
11522
11523         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
11524         if (!rekey_attr)
11525                 goto nla_put_failure;
11526
11527         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
11528                     NL80211_REPLAY_CTR_LEN, replay_ctr))
11529                 goto nla_put_failure;
11530
11531         nla_nest_end(msg, rekey_attr);
11532
11533         genlmsg_end(msg, hdr);
11534
11535         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11536                                 NL80211_MCGRP_MLME, gfp);
11537         return;
11538
11539  nla_put_failure:
11540         genlmsg_cancel(msg, hdr);
11541         nlmsg_free(msg);
11542 }
11543
11544 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
11545                                const u8 *replay_ctr, gfp_t gfp)
11546 {
11547         struct wireless_dev *wdev = dev->ieee80211_ptr;
11548         struct wiphy *wiphy = wdev->wiphy;
11549         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11550
11551         trace_cfg80211_gtk_rekey_notify(dev, bssid);
11552         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
11553 }
11554 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
11555
11556 static void
11557 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
11558                                struct net_device *netdev, int index,
11559                                const u8 *bssid, bool preauth, gfp_t gfp)
11560 {
11561         struct sk_buff *msg;
11562         struct nlattr *attr;
11563         void *hdr;
11564
11565         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11566         if (!msg)
11567                 return;
11568
11569         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
11570         if (!hdr) {
11571                 nlmsg_free(msg);
11572                 return;
11573         }
11574
11575         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11576             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11577                 goto nla_put_failure;
11578
11579         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
11580         if (!attr)
11581                 goto nla_put_failure;
11582
11583         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
11584             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
11585             (preauth &&
11586              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
11587                 goto nla_put_failure;
11588
11589         nla_nest_end(msg, attr);
11590
11591         genlmsg_end(msg, hdr);
11592
11593         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11594                                 NL80211_MCGRP_MLME, gfp);
11595         return;
11596
11597  nla_put_failure:
11598         genlmsg_cancel(msg, hdr);
11599         nlmsg_free(msg);
11600 }
11601
11602 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
11603                                      const u8 *bssid, bool preauth, gfp_t gfp)
11604 {
11605         struct wireless_dev *wdev = dev->ieee80211_ptr;
11606         struct wiphy *wiphy = wdev->wiphy;
11607         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11608
11609         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
11610         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
11611 }
11612 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
11613
11614 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
11615                                      struct net_device *netdev,
11616                                      struct cfg80211_chan_def *chandef,
11617                                      gfp_t gfp)
11618 {
11619         struct sk_buff *msg;
11620         void *hdr;
11621
11622         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11623         if (!msg)
11624                 return;
11625
11626         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY);
11627         if (!hdr) {
11628                 nlmsg_free(msg);
11629                 return;
11630         }
11631
11632         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11633                 goto nla_put_failure;
11634
11635         if (nl80211_send_chandef(msg, chandef))
11636                 goto nla_put_failure;
11637
11638         genlmsg_end(msg, hdr);
11639
11640         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11641                                 NL80211_MCGRP_MLME, gfp);
11642         return;
11643
11644  nla_put_failure:
11645         genlmsg_cancel(msg, hdr);
11646         nlmsg_free(msg);
11647 }
11648
11649 void cfg80211_ch_switch_notify(struct net_device *dev,
11650                                struct cfg80211_chan_def *chandef)
11651 {
11652         struct wireless_dev *wdev = dev->ieee80211_ptr;
11653         struct wiphy *wiphy = wdev->wiphy;
11654         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11655
11656         ASSERT_WDEV_LOCK(wdev);
11657
11658         trace_cfg80211_ch_switch_notify(dev, chandef);
11659
11660         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11661                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11662                     wdev->iftype != NL80211_IFTYPE_ADHOC &&
11663                     wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11664                 return;
11665
11666         wdev->chandef = *chandef;
11667         wdev->preset_chandef = *chandef;
11668         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
11669 }
11670 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
11671
11672 void cfg80211_cqm_txe_notify(struct net_device *dev,
11673                              const u8 *peer, u32 num_packets,
11674                              u32 rate, u32 intvl, gfp_t gfp)
11675 {
11676         struct wireless_dev *wdev = dev->ieee80211_ptr;
11677         struct wiphy *wiphy = wdev->wiphy;
11678         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11679         struct sk_buff *msg;
11680         struct nlattr *pinfoattr;
11681         void *hdr;
11682
11683         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11684         if (!msg)
11685                 return;
11686
11687         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11688         if (!hdr) {
11689                 nlmsg_free(msg);
11690                 return;
11691         }
11692
11693         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11694             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11695             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11696                 goto nla_put_failure;
11697
11698         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11699         if (!pinfoattr)
11700                 goto nla_put_failure;
11701
11702         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11703                 goto nla_put_failure;
11704
11705         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11706                 goto nla_put_failure;
11707
11708         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11709                 goto nla_put_failure;
11710
11711         nla_nest_end(msg, pinfoattr);
11712
11713         genlmsg_end(msg, hdr);
11714
11715         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11716                                 NL80211_MCGRP_MLME, gfp);
11717         return;
11718
11719  nla_put_failure:
11720         genlmsg_cancel(msg, hdr);
11721         nlmsg_free(msg);
11722 }
11723 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11724
11725 void
11726 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
11727                      const struct cfg80211_chan_def *chandef,
11728                      enum nl80211_radar_event event,
11729                      struct net_device *netdev, gfp_t gfp)
11730 {
11731         struct sk_buff *msg;
11732         void *hdr;
11733
11734         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11735         if (!msg)
11736                 return;
11737
11738         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
11739         if (!hdr) {
11740                 nlmsg_free(msg);
11741                 return;
11742         }
11743
11744         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
11745                 goto nla_put_failure;
11746
11747         /* NOP and radar events don't need a netdev parameter */
11748         if (netdev) {
11749                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
11750
11751                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11752                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11753                         goto nla_put_failure;
11754         }
11755
11756         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
11757                 goto nla_put_failure;
11758
11759         if (nl80211_send_chandef(msg, chandef))
11760                 goto nla_put_failure;
11761
11762         genlmsg_end(msg, hdr);
11763
11764         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11765                                 NL80211_MCGRP_MLME, gfp);
11766         return;
11767
11768  nla_put_failure:
11769         genlmsg_cancel(msg, hdr);
11770         nlmsg_free(msg);
11771 }
11772
11773 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
11774                                  const u8 *peer, u32 num_packets, gfp_t gfp)
11775 {
11776         struct wireless_dev *wdev = dev->ieee80211_ptr;
11777         struct wiphy *wiphy = wdev->wiphy;
11778         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11779         struct sk_buff *msg;
11780         struct nlattr *pinfoattr;
11781         void *hdr;
11782
11783         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
11784
11785         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11786         if (!msg)
11787                 return;
11788
11789         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11790         if (!hdr) {
11791                 nlmsg_free(msg);
11792                 return;
11793         }
11794
11795         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11796             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11797             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer))
11798                 goto nla_put_failure;
11799
11800         pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM);
11801         if (!pinfoattr)
11802                 goto nla_put_failure;
11803
11804         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
11805                 goto nla_put_failure;
11806
11807         nla_nest_end(msg, pinfoattr);
11808
11809         genlmsg_end(msg, hdr);
11810
11811         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11812                                 NL80211_MCGRP_MLME, gfp);
11813         return;
11814
11815  nla_put_failure:
11816         genlmsg_cancel(msg, hdr);
11817         nlmsg_free(msg);
11818 }
11819 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
11820
11821 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
11822                            u64 cookie, bool acked, gfp_t gfp)
11823 {
11824         struct wireless_dev *wdev = dev->ieee80211_ptr;
11825         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11826         struct sk_buff *msg;
11827         void *hdr;
11828
11829         trace_cfg80211_probe_status(dev, addr, cookie, acked);
11830
11831         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11832
11833         if (!msg)
11834                 return;
11835
11836         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
11837         if (!hdr) {
11838                 nlmsg_free(msg);
11839                 return;
11840         }
11841
11842         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11843             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11844             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11845             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11846             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
11847                 goto nla_put_failure;
11848
11849         genlmsg_end(msg, hdr);
11850
11851         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11852                                 NL80211_MCGRP_MLME, gfp);
11853         return;
11854
11855  nla_put_failure:
11856         genlmsg_cancel(msg, hdr);
11857         nlmsg_free(msg);
11858 }
11859 EXPORT_SYMBOL(cfg80211_probe_status);
11860
11861 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
11862                                  const u8 *frame, size_t len,
11863                                  int freq, int sig_dbm)
11864 {
11865         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11866         struct sk_buff *msg;
11867         void *hdr;
11868         struct cfg80211_beacon_registration *reg;
11869
11870         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
11871
11872         spin_lock_bh(&rdev->beacon_registrations_lock);
11873         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
11874                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
11875                 if (!msg) {
11876                         spin_unlock_bh(&rdev->beacon_registrations_lock);
11877                         return;
11878                 }
11879
11880                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11881                 if (!hdr)
11882                         goto nla_put_failure;
11883
11884                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11885                     (freq &&
11886                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
11887                     (sig_dbm &&
11888                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11889                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
11890                         goto nla_put_failure;
11891
11892                 genlmsg_end(msg, hdr);
11893
11894                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
11895         }
11896         spin_unlock_bh(&rdev->beacon_registrations_lock);
11897         return;
11898
11899  nla_put_failure:
11900         spin_unlock_bh(&rdev->beacon_registrations_lock);
11901         if (hdr)
11902                 genlmsg_cancel(msg, hdr);
11903         nlmsg_free(msg);
11904 }
11905 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
11906
11907 #ifdef CONFIG_PM
11908 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
11909                                    struct cfg80211_wowlan_wakeup *wakeup,
11910                                    gfp_t gfp)
11911 {
11912         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11913         struct sk_buff *msg;
11914         void *hdr;
11915         int size = 200;
11916
11917         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
11918
11919         if (wakeup)
11920                 size += wakeup->packet_present_len;
11921
11922         msg = nlmsg_new(size, gfp);
11923         if (!msg)
11924                 return;
11925
11926         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
11927         if (!hdr)
11928                 goto free_msg;
11929
11930         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11931             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11932                 goto free_msg;
11933
11934         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11935                                         wdev->netdev->ifindex))
11936                 goto free_msg;
11937
11938         if (wakeup) {
11939                 struct nlattr *reasons;
11940
11941                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
11942                 if (!reasons)
11943                         goto free_msg;
11944
11945                 if (wakeup->disconnect &&
11946                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
11947                         goto free_msg;
11948                 if (wakeup->magic_pkt &&
11949                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
11950                         goto free_msg;
11951                 if (wakeup->gtk_rekey_failure &&
11952                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
11953                         goto free_msg;
11954                 if (wakeup->eap_identity_req &&
11955                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
11956                         goto free_msg;
11957                 if (wakeup->four_way_handshake &&
11958                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
11959                         goto free_msg;
11960                 if (wakeup->rfkill_release &&
11961                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
11962                         goto free_msg;
11963
11964                 if (wakeup->pattern_idx >= 0 &&
11965                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
11966                                 wakeup->pattern_idx))
11967                         goto free_msg;
11968
11969                 if (wakeup->tcp_match &&
11970                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
11971                         goto free_msg;
11972
11973                 if (wakeup->tcp_connlost &&
11974                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
11975                         goto free_msg;
11976
11977                 if (wakeup->tcp_nomoretokens &&
11978                     nla_put_flag(msg,
11979                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
11980                         goto free_msg;
11981
11982                 if (wakeup->packet) {
11983                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
11984                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
11985
11986                         if (!wakeup->packet_80211) {
11987                                 pkt_attr =
11988                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
11989                                 len_attr =
11990                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
11991                         }
11992
11993                         if (wakeup->packet_len &&
11994                             nla_put_u32(msg, len_attr, wakeup->packet_len))
11995                                 goto free_msg;
11996
11997                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
11998                                     wakeup->packet))
11999                                 goto free_msg;
12000                 }
12001
12002                 nla_nest_end(msg, reasons);
12003         }
12004
12005         genlmsg_end(msg, hdr);
12006
12007         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12008                                 NL80211_MCGRP_MLME, gfp);
12009         return;
12010
12011  free_msg:
12012         nlmsg_free(msg);
12013 }
12014 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12015 #endif
12016
12017 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12018                                 enum nl80211_tdls_operation oper,
12019                                 u16 reason_code, gfp_t gfp)
12020 {
12021         struct wireless_dev *wdev = dev->ieee80211_ptr;
12022         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12023         struct sk_buff *msg;
12024         void *hdr;
12025
12026         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12027                                          reason_code);
12028
12029         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12030         if (!msg)
12031                 return;
12032
12033         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12034         if (!hdr) {
12035                 nlmsg_free(msg);
12036                 return;
12037         }
12038
12039         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12040             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12041             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12042             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12043             (reason_code > 0 &&
12044              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12045                 goto nla_put_failure;
12046
12047         genlmsg_end(msg, hdr);
12048
12049         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12050                                 NL80211_MCGRP_MLME, gfp);
12051         return;
12052
12053  nla_put_failure:
12054         genlmsg_cancel(msg, hdr);
12055         nlmsg_free(msg);
12056 }
12057 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12058
12059 static int nl80211_netlink_notify(struct notifier_block * nb,
12060                                   unsigned long state,
12061                                   void *_notify)
12062 {
12063         struct netlink_notify *notify = _notify;
12064         struct cfg80211_registered_device *rdev;
12065         struct wireless_dev *wdev;
12066         struct cfg80211_beacon_registration *reg, *tmp;
12067
12068         if (state != NETLINK_URELEASE)
12069                 return NOTIFY_DONE;
12070
12071         rcu_read_lock();
12072
12073         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12074                 bool schedule_destroy_work = false;
12075
12076                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12077                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12078
12079                         if (wdev->owner_nlportid == notify->portid)
12080                                 schedule_destroy_work = true;
12081                 }
12082
12083                 spin_lock_bh(&rdev->beacon_registrations_lock);
12084                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12085                                          list) {
12086                         if (reg->nlportid == notify->portid) {
12087                                 list_del(&reg->list);
12088                                 kfree(reg);
12089                                 break;
12090                         }
12091                 }
12092                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12093
12094                 if (schedule_destroy_work) {
12095                         struct cfg80211_iface_destroy *destroy;
12096
12097                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12098                         if (destroy) {
12099                                 destroy->nlportid = notify->portid;
12100                                 spin_lock(&rdev->destroy_list_lock);
12101                                 list_add(&destroy->list, &rdev->destroy_list);
12102                                 spin_unlock(&rdev->destroy_list_lock);
12103                                 schedule_work(&rdev->destroy_work);
12104                         }
12105                 }
12106         }
12107
12108         rcu_read_unlock();
12109
12110         return NOTIFY_OK;
12111 }
12112
12113 static struct notifier_block nl80211_netlink_notifier = {
12114         .notifier_call = nl80211_netlink_notify,
12115 };
12116
12117 void cfg80211_ft_event(struct net_device *netdev,
12118                        struct cfg80211_ft_event_params *ft_event)
12119 {
12120         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12121         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12122         struct sk_buff *msg;
12123         void *hdr;
12124
12125         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12126
12127         if (!ft_event->target_ap)
12128                 return;
12129
12130         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12131         if (!msg)
12132                 return;
12133
12134         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12135         if (!hdr)
12136                 goto out;
12137
12138         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12139             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12140             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12141                 goto out;
12142
12143         if (ft_event->ies &&
12144             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12145                 goto out;
12146         if (ft_event->ric_ies &&
12147             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12148                     ft_event->ric_ies))
12149                 goto out;
12150
12151         genlmsg_end(msg, hdr);
12152
12153         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12154                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12155         return;
12156  out:
12157         nlmsg_free(msg);
12158 }
12159 EXPORT_SYMBOL(cfg80211_ft_event);
12160
12161 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12162 {
12163         struct cfg80211_registered_device *rdev;
12164         struct sk_buff *msg;
12165         void *hdr;
12166         u32 nlportid;
12167
12168         rdev = wiphy_to_rdev(wdev->wiphy);
12169         if (!rdev->crit_proto_nlportid)
12170                 return;
12171
12172         nlportid = rdev->crit_proto_nlportid;
12173         rdev->crit_proto_nlportid = 0;
12174
12175         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12176         if (!msg)
12177                 return;
12178
12179         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12180         if (!hdr)
12181                 goto nla_put_failure;
12182
12183         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12184             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12185                 goto nla_put_failure;
12186
12187         genlmsg_end(msg, hdr);
12188
12189         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12190         return;
12191
12192  nla_put_failure:
12193         if (hdr)
12194                 genlmsg_cancel(msg, hdr);
12195         nlmsg_free(msg);
12196
12197 }
12198 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12199
12200 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12201 {
12202         struct wiphy *wiphy = wdev->wiphy;
12203         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12204         struct sk_buff *msg;
12205         void *hdr;
12206
12207         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12208         if (!msg)
12209                 return;
12210
12211         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12212         if (!hdr)
12213                 goto out;
12214
12215         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12216             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12217             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12218                 goto out;
12219
12220         genlmsg_end(msg, hdr);
12221
12222         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12223                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12224         return;
12225  out:
12226         nlmsg_free(msg);
12227 }
12228
12229 /* initialisation/exit functions */
12230
12231 int nl80211_init(void)
12232 {
12233         int err;
12234
12235         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12236                                                    nl80211_mcgrps);
12237         if (err)
12238                 return err;
12239
12240         err = netlink_register_notifier(&nl80211_netlink_notifier);
12241         if (err)
12242                 goto err_out;
12243
12244         return 0;
12245  err_out:
12246         genl_unregister_family(&nl80211_fam);
12247         return err;
12248 }
12249
12250 void nl80211_exit(void)
12251 {
12252         netlink_unregister_notifier(&nl80211_netlink_notifier);
12253         genl_unregister_family(&nl80211_fam);
12254 }