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 = NL80211_MULTICAST_GROUP_CONFIG },
  63         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  64         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  65         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  66         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  67 #ifdef CONFIG_NL80211_TESTMODE
  68         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_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[NUM_NL80211_ATTR] = {
 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_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         [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN },
 399         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 400 };
 401
 402 /* policy for the key attributes */
 403 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 404         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 405         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 406         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 407         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 408         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 409         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 410         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 411         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 412 };
 413
 414 /* policy for the key default flags */
 415 static const struct nla_policy
 416 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 417         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 418         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 419 };
 420
 421 /* policy for WoWLAN attributes */
 422 static const struct nla_policy
 423 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 424         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 425         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 426         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 427         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 428         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 431         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 433         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 434 };
 435
 436 static const struct nla_policy
 437 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 438         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 439         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 440         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 441         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 442         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 443         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 444         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 445                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 446         },
 447         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 448                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 449         },
 450         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 451         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 452         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 453 };
 454
 455 /* policy for coalesce rule attributes */
 456 static const struct nla_policy
 457 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 458         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 459         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 460         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 461 };
 462
 463 /* policy for GTK rekey offload attributes */
 464 static const struct nla_policy
 465 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 466         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 467         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 468         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 469 };
 470
 471 static const struct nla_policy
 472 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 473         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 474                                                  .len = IEEE80211_MAX_SSID_LEN },
 475         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 476 };
 477
 478 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 479                                      struct netlink_callback *cb,
 480                                      struct cfg80211_registered_device **rdev,
 481                                      struct wireless_dev **wdev)
 482 {
 483         int err;
 484
 485         rtnl_lock();
 486
 487         if (!cb->args[0]) {
 488                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 489                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 490                                   nl80211_policy);
 491                 if (err)
 492                         goto out_unlock;
 493
 494                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 495                                                    nl80211_fam.attrbuf);
 496                 if (IS_ERR(*wdev)) {
 497                         err = PTR_ERR(*wdev);
 498                         goto out_unlock;
 499                 }
 500                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 501                 /* 0 is the first index - add 1 to parse only once */
 502                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 503                 cb->args[1] = (*wdev)->identifier;
 504         } else {
 505                 /* subtract the 1 again here */
 506                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 507                 struct wireless_dev *tmp;
 508
 509                 if (!wiphy) {
 510                         err = -ENODEV;
 511                         goto out_unlock;
 512                 }
 513                 *rdev = wiphy_to_rdev(wiphy);
 514                 *wdev = NULL;
 515
 516                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 517                         if (tmp->identifier == cb->args[1]) {
 518                                 *wdev = tmp;
 519                                 break;
 520                         }
 521                 }
 522
 523                 if (!*wdev) {
 524                         err = -ENODEV;
 525                         goto out_unlock;
 526                 }
 527         }
 528
 529         return 0;
 530  out_unlock:
 531         rtnl_unlock();
 532         return err;
 533 }
 534
 535 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 536 {
 537         rtnl_unlock();
 538 }
 539
 540 /* IE validation */
 541 static bool is_valid_ie_attr(const struct nlattr *attr)
 542 {
 543         const u8 *pos;
 544         int len;
 545
 546         if (!attr)
 547                 return true;
 548
 549         pos = nla_data(attr);
 550         len = nla_len(attr);
 551
 552         while (len) {
 553                 u8 elemlen;
 554
 555                 if (len < 2)
 556                         return false;
 557                 len -= 2;
 558
 559                 elemlen = pos[1];
 560                 if (elemlen > len)
 561                         return false;
 562
 563                 len -= elemlen;
 564                 pos += 2 + elemlen;
 565         }
 566
 567         return true;
 568 }
 569
 570 /* message building helper */
 571 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 572                                    int flags, u8 cmd)
 573 {
 574         /* since there is no private header just add the generic one */
 575         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 576 }
 577
 578 static int nl80211_msg_put_channel(struct sk_buff *msg,
 579                                    struct ieee80211_channel *chan,
 580                                    bool large)
 581 {
 582         /* Some channels must be completely excluded from the
 583          * list to protect old user-space tools from breaking
 584          */
 585         if (!large && chan->flags &
 586             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 587                 return 0;
 588
 589         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 590                         chan->center_freq))
 591                 goto nla_put_failure;
 592
 593         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 594             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 595                 goto nla_put_failure;
 596         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 597                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 598                         goto nla_put_failure;
 599                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 600                         goto nla_put_failure;
 601         }
 602         if (chan->flags & IEEE80211_CHAN_RADAR) {
 603                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 604                         goto nla_put_failure;
 605                 if (large) {
 606                         u32 time;
 607
 608                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 609
 610                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 611                                         chan->dfs_state))
 612                                 goto nla_put_failure;
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 614                                         time))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg,
 617                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 618                                         chan->dfs_cac_ms))
 619                                 goto nla_put_failure;
 620                 }
 621         }
 622
 623         if (large) {
 624                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 625                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 626                         goto nla_put_failure;
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 647                         goto nla_put_failure;
 648         }
 649
 650         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 651                         DBM_TO_MBM(chan->max_power)))
 652                 goto nla_put_failure;
 653
 654         return 0;
 655
 656  nla_put_failure:
 657         return -ENOBUFS;
 658 }
 659
 660 /* netlink command implementations */
 661
 662 struct key_parse {
 663         struct key_params p;
 664         int idx;
 665         int type;
 666         bool def, defmgmt;
 667         bool def_uni, def_multi;
 668 };
 669
 670 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 671 {
 672         struct nlattr *tb[NL80211_KEY_MAX + 1];
 673         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 674                                    nl80211_key_policy);
 675         if (err)
 676                 return err;
 677
 678         k->def = !!tb[NL80211_KEY_DEFAULT];
 679         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 680
 681         if (k->def) {
 682                 k->def_uni = true;
 683                 k->def_multi = true;
 684         }
 685         if (k->defmgmt)
 686                 k->def_multi = true;
 687
 688         if (tb[NL80211_KEY_IDX])
 689                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 690
 691         if (tb[NL80211_KEY_DATA]) {
 692                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 693                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 694         }
 695
 696         if (tb[NL80211_KEY_SEQ]) {
 697                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 698                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 699         }
 700
 701         if (tb[NL80211_KEY_CIPHER])
 702                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 703
 704         if (tb[NL80211_KEY_TYPE]) {
 705                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 706                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 707                         return -EINVAL;
 708         }
 709
 710         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 711                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 712                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 713                                        tb[NL80211_KEY_DEFAULT_TYPES],
 714                                        nl80211_key_default_policy);
 715                 if (err)
 716                         return err;
 717
 718                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 719                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 720         }
 721
 722         return 0;
 723 }
 724
 725 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 726 {
 727         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 728                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 729                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 730         }
 731
 732         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 733                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 734                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 735         }
 736
 737         if (info->attrs[NL80211_ATTR_KEY_IDX])
 738                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 739
 740         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 741                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 742
 743         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 744         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 745
 746         if (k->def) {
 747                 k->def_uni = true;
 748                 k->def_multi = true;
 749         }
 750         if (k->defmgmt)
 751                 k->def_multi = true;
 752
 753         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 754                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 755                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 756                         return -EINVAL;
 757         }
 758
 759         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 760                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 761                 int err = nla_parse_nested(
 762                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 763                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 764                                 nl80211_key_default_policy);
 765                 if (err)
 766                         return err;
 767
 768                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 769                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 776 {
 777         int err;
 778
 779         memset(k, 0, sizeof(*k));
 780         k->idx = -1;
 781         k->type = -1;
 782
 783         if (info->attrs[NL80211_ATTR_KEY])
 784                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 785         else
 786                 err = nl80211_parse_key_old(info, k);
 787
 788         if (err)
 789                 return err;
 790
 791         if (k->def && k->defmgmt)
 792                 return -EINVAL;
 793
 794         if (k->defmgmt) {
 795                 if (k->def_uni || !k->def_multi)
 796                         return -EINVAL;
 797         }
 798
 799         if (k->idx != -1) {
 800                 if (k->defmgmt) {
 801                         if (k->idx < 4 || k->idx > 5)
 802                                 return -EINVAL;
 803                 } else if (k->def) {
 804                         if (k->idx < 0 || k->idx > 3)
 805                                 return -EINVAL;
 806                 } else {
 807                         if (k->idx < 0 || k->idx > 5)
 808                                 return -EINVAL;
 809                 }
 810         }
 811
 812         return 0;
 813 }
 814
 815 static struct cfg80211_cached_keys *
 816 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 817                        struct nlattr *keys, bool *no_ht)
 818 {
 819         struct key_parse parse;
 820         struct nlattr *key;
 821         struct cfg80211_cached_keys *result;
 822         int rem, err, def = 0;
 823
 824         result = kzalloc(sizeof(*result), GFP_KERNEL);
 825         if (!result)
 826                 return ERR_PTR(-ENOMEM);
 827
 828         result->def = -1;
 829         result->defmgmt = -1;
 830
 831         nla_for_each_nested(key, keys, rem) {
 832                 memset(&parse, 0, sizeof(parse));
 833                 parse.idx = -1;
 834
 835                 err = nl80211_parse_key_new(key, &parse);
 836                 if (err)
 837                         goto error;
 838                 err = -EINVAL;
 839                 if (!parse.p.key)
 840                         goto error;
 841                 if (parse.idx < 0 || parse.idx > 4)
 842                         goto error;
 843                 if (parse.def) {
 844                         if (def)
 845                                 goto error;
 846                         def = 1;
 847                         result->def = parse.idx;
 848                         if (!parse.def_uni || !parse.def_multi)
 849                                 goto error;
 850                 } else if (parse.defmgmt)
 851                         goto error;
 852                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 853                                                      parse.idx, false, NULL);
 854                 if (err)
 855                         goto error;
 856                 result->params[parse.idx].cipher = parse.p.cipher;
 857                 result->params[parse.idx].key_len = parse.p.key_len;
 858                 result->params[parse.idx].key = result->data[parse.idx];
 859                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 860
 861                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 862                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 863                         if (no_ht)
 864                                 *no_ht = true;
 865                 }
 866         }
 867
 868         return result;
 869  error:
 870         kfree(result);
 871         return ERR_PTR(err);
 872 }
 873
 874 static int nl80211_key_allowed(struct wireless_dev *wdev)
 875 {
 876         ASSERT_WDEV_LOCK(wdev);
 877
 878         switch (wdev->iftype) {
 879         case NL80211_IFTYPE_AP:
 880         case NL80211_IFTYPE_AP_VLAN:
 881         case NL80211_IFTYPE_P2P_GO:
 882         case NL80211_IFTYPE_MESH_POINT:
 883                 break;
 884         case NL80211_IFTYPE_ADHOC:
 885         case NL80211_IFTYPE_STATION:
 886         case NL80211_IFTYPE_P2P_CLIENT:
 887                 if (!wdev->current_bss)
 888                         return -ENOLINK;
 889                 break;
 890         case NL80211_IFTYPE_UNSPECIFIED:
 891         case NL80211_IFTYPE_OCB:
 892         case NL80211_IFTYPE_MONITOR:
 893         case NL80211_IFTYPE_P2P_DEVICE:
 894         case NL80211_IFTYPE_WDS:
 895         case NUM_NL80211_IFTYPES:
 896                 return -EINVAL;
 897         }
 898
 899         return 0;
 900 }
 901
 902 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 903                                                         struct nlattr *tb)
 904 {
 905         struct ieee80211_channel *chan;
 906
 907         if (tb == NULL)
 908                 return NULL;
 909         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 910         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 911                 return NULL;
 912         return chan;
 913 }
 914
 915 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 916 {
 917         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 918         int i;
 919
 920         if (!nl_modes)
 921                 goto nla_put_failure;
 922
 923         i = 0;
 924         while (ifmodes) {
 925                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 926                         goto nla_put_failure;
 927                 ifmodes >>= 1;
 928                 i++;
 929         }
 930
 931         nla_nest_end(msg, nl_modes);
 932         return 0;
 933
 934 nla_put_failure:
 935         return -ENOBUFS;
 936 }
 937
 938 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 939                                           struct sk_buff *msg,
 940                                           bool large)
 941 {
 942         struct nlattr *nl_combis;
 943         int i, j;
 944
 945         nl_combis = nla_nest_start(msg,
 946                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 947         if (!nl_combis)
 948                 goto nla_put_failure;
 949
 950         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 951                 const struct ieee80211_iface_combination *c;
 952                 struct nlattr *nl_combi, *nl_limits;
 953
 954                 c = &wiphy->iface_combinations[i];
 955
 956                 nl_combi = nla_nest_start(msg, i + 1);
 957                 if (!nl_combi)
 958                         goto nla_put_failure;
 959
 960                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 961                 if (!nl_limits)
 962                         goto nla_put_failure;
 963
 964                 for (j = 0; j < c->n_limits; j++) {
 965                         struct nlattr *nl_limit;
 966
 967                         nl_limit = nla_nest_start(msg, j + 1);
 968                         if (!nl_limit)
 969                                 goto nla_put_failure;
 970                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 971                                         c->limits[j].max))
 972                                 goto nla_put_failure;
 973                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 974                                                 c->limits[j].types))
 975                                 goto nla_put_failure;
 976                         nla_nest_end(msg, nl_limit);
 977                 }
 978
 979                 nla_nest_end(msg, nl_limits);
 980
 981                 if (c->beacon_int_infra_match &&
 982                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 983                         goto nla_put_failure;
 984                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 985                                 c->num_different_channels) ||
 986                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 987                                 c->max_interfaces))
 988                         goto nla_put_failure;
 989                 if (large &&
 990                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 991                                 c->radar_detect_widths) ||
 992                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 993                                 c->radar_detect_regions)))
 994                         goto nla_put_failure;
 995
 996                 nla_nest_end(msg, nl_combi);
 997         }
 998
 999         nla_nest_end(msg, nl_combis);
1000
1001         return 0;
1002 nla_put_failure:
1003         return -ENOBUFS;
1004 }
1005
1006 #ifdef CONFIG_PM
1007 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1008                                         struct sk_buff *msg)
1009 {
1010         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1011         struct nlattr *nl_tcp;
1012
1013         if (!tcp)
1014                 return 0;
1015
1016         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1017         if (!nl_tcp)
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 (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1025                         tcp->data_payload_max))
1026                 return -ENOBUFS;
1027
1028         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1029                 return -ENOBUFS;
1030
1031         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1032                                 sizeof(*tcp->tok), tcp->tok))
1033                 return -ENOBUFS;
1034
1035         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1036                         tcp->data_interval_max))
1037                 return -ENOBUFS;
1038
1039         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1040                         tcp->wake_payload_max))
1041                 return -ENOBUFS;
1042
1043         nla_nest_end(msg, nl_tcp);
1044         return 0;
1045 }
1046
1047 static int nl80211_send_wowlan(struct sk_buff *msg,
1048                                struct cfg80211_registered_device *rdev,
1049                                bool large)
1050 {
1051         struct nlattr *nl_wowlan;
1052
1053         if (!rdev->wiphy.wowlan)
1054                 return 0;
1055
1056         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1057         if (!nl_wowlan)
1058                 return -ENOBUFS;
1059
1060         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1061              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1062             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1063              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1064             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1065              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1066             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1067              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1068             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1069              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1070             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1071              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1072             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1073              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1074             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1075              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1076                 return -ENOBUFS;
1077
1078         if (rdev->wiphy.wowlan->n_patterns) {
1079                 struct nl80211_pattern_support pat = {
1080                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1081                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1082                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1083                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1084                 };
1085
1086                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1087                             sizeof(pat), &pat))
1088                         return -ENOBUFS;
1089         }
1090
1091         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1092                 return -ENOBUFS;
1093
1094         /* TODO: send wowlan net detect */
1095
1096         nla_nest_end(msg, nl_wowlan);
1097
1098         return 0;
1099 }
1100 #endif
1101
1102 static int nl80211_send_coalesce(struct sk_buff *msg,
1103                                  struct cfg80211_registered_device *rdev)
1104 {
1105         struct nl80211_coalesce_rule_support rule;
1106
1107         if (!rdev->wiphy.coalesce)
1108                 return 0;
1109
1110         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1111         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1112         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1113         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1114         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1115         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1116
1117         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1118                 return -ENOBUFS;
1119
1120         return 0;
1121 }
1122
1123 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1124                                       struct ieee80211_supported_band *sband)
1125 {
1126         struct nlattr *nl_rates, *nl_rate;
1127         struct ieee80211_rate *rate;
1128         int i;
1129
1130         /* add HT info */
1131         if (sband->ht_cap.ht_supported &&
1132             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1133                      sizeof(sband->ht_cap.mcs),
1134                      &sband->ht_cap.mcs) ||
1135              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1136                          sband->ht_cap.cap) ||
1137              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1138                         sband->ht_cap.ampdu_factor) ||
1139              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1140                         sband->ht_cap.ampdu_density)))
1141                 return -ENOBUFS;
1142
1143         /* add VHT info */
1144         if (sband->vht_cap.vht_supported &&
1145             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1146                      sizeof(sband->vht_cap.vht_mcs),
1147                      &sband->vht_cap.vht_mcs) ||
1148              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1149                          sband->vht_cap.cap)))
1150                 return -ENOBUFS;
1151
1152         /* add bitrates */
1153         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1154         if (!nl_rates)
1155                 return -ENOBUFS;
1156
1157         for (i = 0; i < sband->n_bitrates; i++) {
1158                 nl_rate = nla_nest_start(msg, i);
1159                 if (!nl_rate)
1160                         return -ENOBUFS;
1161
1162                 rate = &sband->bitrates[i];
1163                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1164                                 rate->bitrate))
1165                         return -ENOBUFS;
1166                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1167                     nla_put_flag(msg,
1168                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1169                         return -ENOBUFS;
1170
1171                 nla_nest_end(msg, nl_rate);
1172         }
1173
1174         nla_nest_end(msg, nl_rates);
1175
1176         return 0;
1177 }
1178
1179 static int
1180 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1181                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1182 {
1183         u16 stypes;
1184         struct nlattr *nl_ftypes, *nl_ifs;
1185         enum nl80211_iftype ift;
1186         int i;
1187
1188         if (!mgmt_stypes)
1189                 return 0;
1190
1191         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1192         if (!nl_ifs)
1193                 return -ENOBUFS;
1194
1195         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1196                 nl_ftypes = nla_nest_start(msg, ift);
1197                 if (!nl_ftypes)
1198                         return -ENOBUFS;
1199                 i = 0;
1200                 stypes = mgmt_stypes[ift].tx;
1201                 while (stypes) {
1202                         if ((stypes & 1) &&
1203                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1204                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1205                                 return -ENOBUFS;
1206                         stypes >>= 1;
1207                         i++;
1208                 }
1209                 nla_nest_end(msg, nl_ftypes);
1210         }
1211
1212         nla_nest_end(msg, nl_ifs);
1213
1214         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1215         if (!nl_ifs)
1216                 return -ENOBUFS;
1217
1218         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1219                 nl_ftypes = nla_nest_start(msg, ift);
1220                 if (!nl_ftypes)
1221                         return -ENOBUFS;
1222                 i = 0;
1223                 stypes = mgmt_stypes[ift].rx;
1224                 while (stypes) {
1225                         if ((stypes & 1) &&
1226                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1227                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1228                                 return -ENOBUFS;
1229                         stypes >>= 1;
1230                         i++;
1231                 }
1232                 nla_nest_end(msg, nl_ftypes);
1233         }
1234         nla_nest_end(msg, nl_ifs);
1235
1236         return 0;
1237 }
1238
1239 struct nl80211_dump_wiphy_state {
1240         s64 filter_wiphy;
1241         long start;
1242         long split_start, band_start, chan_start;
1243         bool split;
1244 };
1245
1246 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1247                               enum nl80211_commands cmd,
1248                               struct sk_buff *msg, u32 portid, u32 seq,
1249                               int flags, struct nl80211_dump_wiphy_state *state)
1250 {
1251         void *hdr;
1252         struct nlattr *nl_bands, *nl_band;
1253         struct nlattr *nl_freqs, *nl_freq;
1254         struct nlattr *nl_cmds;
1255         enum ieee80211_band band;
1256         struct ieee80211_channel *chan;
1257         int i;
1258         const struct ieee80211_txrx_stypes *mgmt_stypes =
1259                                 rdev->wiphy.mgmt_stypes;
1260         u32 features;
1261
1262         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1263         if (!hdr)
1264                 return -ENOBUFS;
1265
1266         if (WARN_ON(!state))
1267                 return -EINVAL;
1268
1269         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1270             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1271                            wiphy_name(&rdev->wiphy)) ||
1272             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1273                         cfg80211_rdev_list_generation))
1274                 goto nla_put_failure;
1275
1276         if (cmd != NL80211_CMD_NEW_WIPHY)
1277                 goto finish;
1278
1279         switch (state->split_start) {
1280         case 0:
1281                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1282                                rdev->wiphy.retry_short) ||
1283                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1284                                rdev->wiphy.retry_long) ||
1285                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1286                                 rdev->wiphy.frag_threshold) ||
1287                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1288                                 rdev->wiphy.rts_threshold) ||
1289                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1290                                rdev->wiphy.coverage_class) ||
1291                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1292                                rdev->wiphy.max_scan_ssids) ||
1293                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1294                                rdev->wiphy.max_sched_scan_ssids) ||
1295                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1296                                 rdev->wiphy.max_scan_ie_len) ||
1297                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1298                                 rdev->wiphy.max_sched_scan_ie_len) ||
1299                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1300                                rdev->wiphy.max_match_sets))
1301                         goto nla_put_failure;
1302
1303                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1304                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1305                         goto nla_put_failure;
1306                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1307                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1308                         goto nla_put_failure;
1309                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1310                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1311                         goto nla_put_failure;
1312                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1313                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1314                         goto nla_put_failure;
1315                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1316                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1317                         goto nla_put_failure;
1318                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1319                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1320                         goto nla_put_failure;
1321                 state->split_start++;
1322                 if (state->split)
1323                         break;
1324         case 1:
1325                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1326                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1327                             rdev->wiphy.cipher_suites))
1328                         goto nla_put_failure;
1329
1330                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1331                                rdev->wiphy.max_num_pmkids))
1332                         goto nla_put_failure;
1333
1334                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1335                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1336                         goto nla_put_failure;
1337
1338                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1339                                 rdev->wiphy.available_antennas_tx) ||
1340                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1341                                 rdev->wiphy.available_antennas_rx))
1342                         goto nla_put_failure;
1343
1344                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1345                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1346                                 rdev->wiphy.probe_resp_offload))
1347                         goto nla_put_failure;
1348
1349                 if ((rdev->wiphy.available_antennas_tx ||
1350                      rdev->wiphy.available_antennas_rx) &&
1351                     rdev->ops->get_antenna) {
1352                         u32 tx_ant = 0, rx_ant = 0;
1353                         int res;
1354                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1355                         if (!res) {
1356                                 if (nla_put_u32(msg,
1357                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1358                                                 tx_ant) ||
1359                                     nla_put_u32(msg,
1360                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1361                                                 rx_ant))
1362                                         goto nla_put_failure;
1363                         }
1364                 }
1365
1366                 state->split_start++;
1367                 if (state->split)
1368                         break;
1369         case 2:
1370                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1371                                         rdev->wiphy.interface_modes))
1372                                 goto nla_put_failure;
1373                 state->split_start++;
1374                 if (state->split)
1375                         break;
1376         case 3:
1377                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1378                 if (!nl_bands)
1379                         goto nla_put_failure;
1380
1381                 for (band = state->band_start;
1382                      band < IEEE80211_NUM_BANDS; band++) {
1383                         struct ieee80211_supported_band *sband;
1384
1385                         sband = rdev->wiphy.bands[band];
1386
1387                         if (!sband)
1388                                 continue;
1389
1390                         nl_band = nla_nest_start(msg, band);
1391                         if (!nl_band)
1392                                 goto nla_put_failure;
1393
1394                         switch (state->chan_start) {
1395                         case 0:
1396                                 if (nl80211_send_band_rateinfo(msg, sband))
1397                                         goto nla_put_failure;
1398                                 state->chan_start++;
1399                                 if (state->split)
1400                                         break;
1401                         default:
1402                                 /* add frequencies */
1403                                 nl_freqs = nla_nest_start(
1404                                         msg, NL80211_BAND_ATTR_FREQS);
1405                                 if (!nl_freqs)
1406                                         goto nla_put_failure;
1407
1408                                 for (i = state->chan_start - 1;
1409                                      i < sband->n_channels;
1410                                      i++) {
1411                                         nl_freq = nla_nest_start(msg, i);
1412                                         if (!nl_freq)
1413                                                 goto nla_put_failure;
1414
1415                                         chan = &sband->channels[i];
1416
1417                                         if (nl80211_msg_put_channel(
1418                                                         msg, chan,
1419                                                         state->split))
1420                                                 goto nla_put_failure;
1421
1422                                         nla_nest_end(msg, nl_freq);
1423                                         if (state->split)
1424                                                 break;
1425                                 }
1426                                 if (i < sband->n_channels)
1427                                         state->chan_start = i + 2;
1428                                 else
1429                                         state->chan_start = 0;
1430                                 nla_nest_end(msg, nl_freqs);
1431                         }
1432
1433                         nla_nest_end(msg, nl_band);
1434
1435                         if (state->split) {
1436                                 /* start again here */
1437                                 if (state->chan_start)
1438                                         band--;
1439                                 break;
1440                         }
1441                 }
1442                 nla_nest_end(msg, nl_bands);
1443
1444                 if (band < IEEE80211_NUM_BANDS)
1445                         state->band_start = band + 1;
1446                 else
1447                         state->band_start = 0;
1448
1449                 /* if bands & channels are done, continue outside */
1450                 if (state->band_start == 0 && state->chan_start == 0)
1451                         state->split_start++;
1452                 if (state->split)
1453                         break;
1454         case 4:
1455                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1456                 if (!nl_cmds)
1457                         goto nla_put_failure;
1458
1459                 i = 0;
1460 #define CMD(op, n)                                                      \
1461                  do {                                                   \
1462                         if (rdev->ops->op) {                            \
1463                                 i++;                                    \
1464                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1465                                         goto nla_put_failure;           \
1466                         }                                               \
1467                 } while (0)
1468
1469                 CMD(add_virtual_intf, NEW_INTERFACE);
1470                 CMD(change_virtual_intf, SET_INTERFACE);
1471                 CMD(add_key, NEW_KEY);
1472                 CMD(start_ap, START_AP);
1473                 CMD(add_station, NEW_STATION);
1474                 CMD(add_mpath, NEW_MPATH);
1475                 CMD(update_mesh_config, SET_MESH_CONFIG);
1476                 CMD(change_bss, SET_BSS);
1477                 CMD(auth, AUTHENTICATE);
1478                 CMD(assoc, ASSOCIATE);
1479                 CMD(deauth, DEAUTHENTICATE);
1480                 CMD(disassoc, DISASSOCIATE);
1481                 CMD(join_ibss, JOIN_IBSS);
1482                 CMD(join_mesh, JOIN_MESH);
1483                 CMD(set_pmksa, SET_PMKSA);
1484                 CMD(del_pmksa, DEL_PMKSA);
1485                 CMD(flush_pmksa, FLUSH_PMKSA);
1486                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1487                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1488                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1489                 CMD(mgmt_tx, FRAME);
1490                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1491                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1492                         i++;
1493                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1494                                 goto nla_put_failure;
1495                 }
1496                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1497                     rdev->ops->join_mesh) {
1498                         i++;
1499                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1500                                 goto nla_put_failure;
1501                 }
1502                 CMD(set_wds_peer, SET_WDS_PEER);
1503                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1504                         CMD(tdls_mgmt, TDLS_MGMT);
1505                         CMD(tdls_oper, TDLS_OPER);
1506                 }
1507                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1508                         CMD(sched_scan_start, START_SCHED_SCAN);
1509                 CMD(probe_client, PROBE_CLIENT);
1510                 CMD(set_noack_map, SET_NOACK_MAP);
1511                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1512                         i++;
1513                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1514                                 goto nla_put_failure;
1515                 }
1516                 CMD(start_p2p_device, START_P2P_DEVICE);
1517                 CMD(set_mcast_rate, SET_MCAST_RATE);
1518 #ifdef CONFIG_NL80211_TESTMODE
1519                 CMD(testmode_cmd, TESTMODE);
1520 #endif
1521                 if (state->split) {
1522                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1523                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1524                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1525                                 CMD(channel_switch, CHANNEL_SWITCH);
1526                         CMD(set_qos_map, SET_QOS_MAP);
1527                         if (rdev->wiphy.features &
1528                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1529                                 CMD(add_tx_ts, ADD_TX_TS);
1530                 }
1531                 /* add into the if now */
1532 #undef CMD
1533
1534                 if (rdev->ops->connect || rdev->ops->auth) {
1535                         i++;
1536                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1537                                 goto nla_put_failure;
1538                 }
1539
1540                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1541                         i++;
1542                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1543                                 goto nla_put_failure;
1544                 }
1545
1546                 nla_nest_end(msg, nl_cmds);
1547                 state->split_start++;
1548                 if (state->split)
1549                         break;
1550         case 5:
1551                 if (rdev->ops->remain_on_channel &&
1552                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1553                     nla_put_u32(msg,
1554                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1555                                 rdev->wiphy.max_remain_on_channel_duration))
1556                         goto nla_put_failure;
1557
1558                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1559                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1560                         goto nla_put_failure;
1561
1562                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1563                         goto nla_put_failure;
1564                 state->split_start++;
1565                 if (state->split)
1566                         break;
1567         case 6:
1568 #ifdef CONFIG_PM
1569                 if (nl80211_send_wowlan(msg, rdev, state->split))
1570                         goto nla_put_failure;
1571                 state->split_start++;
1572                 if (state->split)
1573                         break;
1574 #else
1575                 state->split_start++;
1576 #endif
1577         case 7:
1578                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1579                                         rdev->wiphy.software_iftypes))
1580                         goto nla_put_failure;
1581
1582                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1583                                                    state->split))
1584                         goto nla_put_failure;
1585
1586                 state->split_start++;
1587                 if (state->split)
1588                         break;
1589         case 8:
1590                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1591                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1592                                 rdev->wiphy.ap_sme_capa))
1593                         goto nla_put_failure;
1594
1595                 features = rdev->wiphy.features;
1596                 /*
1597                  * We can only add the per-channel limit information if the
1598                  * dump is split, otherwise it makes it too big. Therefore
1599                  * only advertise it in that case.
1600                  */
1601                 if (state->split)
1602                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1603                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1604                         goto nla_put_failure;
1605
1606                 if (rdev->wiphy.ht_capa_mod_mask &&
1607                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1608                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1609                             rdev->wiphy.ht_capa_mod_mask))
1610                         goto nla_put_failure;
1611
1612                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1613                     rdev->wiphy.max_acl_mac_addrs &&
1614                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1615                                 rdev->wiphy.max_acl_mac_addrs))
1616                         goto nla_put_failure;
1617
1618                 /*
1619                  * Any information below this point is only available to
1620                  * applications that can deal with it being split. This
1621                  * helps ensure that newly added capabilities don't break
1622                  * older tools by overrunning their buffers.
1623                  *
1624                  * We still increment split_start so that in the split
1625                  * case we'll continue with more data in the next round,
1626                  * but break unconditionally so unsplit data stops here.
1627                  */
1628                 state->split_start++;
1629                 break;
1630         case 9:
1631                 if (rdev->wiphy.extended_capabilities &&
1632                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1633                              rdev->wiphy.extended_capabilities_len,
1634                              rdev->wiphy.extended_capabilities) ||
1635                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1636                              rdev->wiphy.extended_capabilities_len,
1637                              rdev->wiphy.extended_capabilities_mask)))
1638                         goto nla_put_failure;
1639
1640                 if (rdev->wiphy.vht_capa_mod_mask &&
1641                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1642                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1643                             rdev->wiphy.vht_capa_mod_mask))
1644                         goto nla_put_failure;
1645
1646                 state->split_start++;
1647                 break;
1648         case 10:
1649                 if (nl80211_send_coalesce(msg, rdev))
1650                         goto nla_put_failure;
1651
1652                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1653                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1654                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1655                         goto nla_put_failure;
1656
1657                 if (rdev->wiphy.max_ap_assoc_sta &&
1658                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1659                                 rdev->wiphy.max_ap_assoc_sta))
1660                         goto nla_put_failure;
1661
1662                 state->split_start++;
1663                 break;
1664         case 11:
1665                 if (rdev->wiphy.n_vendor_commands) {
1666                         const struct nl80211_vendor_cmd_info *info;
1667                         struct nlattr *nested;
1668
1669                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1670                         if (!nested)
1671                                 goto nla_put_failure;
1672
1673                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1674                                 info = &rdev->wiphy.vendor_commands[i].info;
1675                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1676                                         goto nla_put_failure;
1677                         }
1678                         nla_nest_end(msg, nested);
1679                 }
1680
1681                 if (rdev->wiphy.n_vendor_events) {
1682                         const struct nl80211_vendor_cmd_info *info;
1683                         struct nlattr *nested;
1684
1685                         nested = nla_nest_start(msg,
1686                                                 NL80211_ATTR_VENDOR_EVENTS);
1687                         if (!nested)
1688                                 goto nla_put_failure;
1689
1690                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1691                                 info = &rdev->wiphy.vendor_events[i];
1692                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1693                                         goto nla_put_failure;
1694                         }
1695                         nla_nest_end(msg, nested);
1696                 }
1697                 state->split_start++;
1698                 break;
1699         case 12:
1700                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1701                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1702                                rdev->wiphy.max_num_csa_counters))
1703                         goto nla_put_failure;
1704
1705                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1706                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1707                         goto nla_put_failure;
1708
1709                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1710                             sizeof(rdev->wiphy.ext_features),
1711                             rdev->wiphy.ext_features))
1712                         goto nla_put_failure;
1713
1714                 /* done */
1715                 state->split_start = 0;
1716                 break;
1717         }
1718  finish:
1719         return genlmsg_end(msg, hdr);
1720
1721  nla_put_failure:
1722         genlmsg_cancel(msg, hdr);
1723         return -EMSGSIZE;
1724 }
1725
1726 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1727                                     struct netlink_callback *cb,
1728                                     struct nl80211_dump_wiphy_state *state)
1729 {
1730         struct nlattr **tb = nl80211_fam.attrbuf;
1731         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1732                               tb, nl80211_fam.maxattr, nl80211_policy);
1733         /* ignore parse errors for backward compatibility */
1734         if (ret)
1735                 return 0;
1736
1737         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1738         if (tb[NL80211_ATTR_WIPHY])
1739                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1740         if (tb[NL80211_ATTR_WDEV])
1741                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1742         if (tb[NL80211_ATTR_IFINDEX]) {
1743                 struct net_device *netdev;
1744                 struct cfg80211_registered_device *rdev;
1745                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1746
1747                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1748                 if (!netdev)
1749                         return -ENODEV;
1750                 if (netdev->ieee80211_ptr) {
1751                         rdev = wiphy_to_rdev(
1752                                 netdev->ieee80211_ptr->wiphy);
1753                         state->filter_wiphy = rdev->wiphy_idx;
1754                 }
1755         }
1756
1757         return 0;
1758 }
1759
1760 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1761 {
1762         int idx = 0, ret;
1763         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1764         struct cfg80211_registered_device *rdev;
1765
1766         rtnl_lock();
1767         if (!state) {
1768                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1769                 if (!state) {
1770                         rtnl_unlock();
1771                         return -ENOMEM;
1772                 }
1773                 state->filter_wiphy = -1;
1774                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1775                 if (ret) {
1776                         kfree(state);
1777                         rtnl_unlock();
1778                         return ret;
1779                 }
1780                 cb->args[0] = (long)state;
1781         }
1782
1783         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1784                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1785                         continue;
1786                 if (++idx <= state->start)
1787                         continue;
1788                 if (state->filter_wiphy != -1 &&
1789                     state->filter_wiphy != rdev->wiphy_idx)
1790                         continue;
1791                 /* attempt to fit multiple wiphy data chunks into the skb */
1792                 do {
1793                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1794                                                  skb,
1795                                                  NETLINK_CB(cb->skb).portid,
1796                                                  cb->nlh->nlmsg_seq,
1797                                                  NLM_F_MULTI, state);
1798                         if (ret < 0) {
1799                                 /*
1800                                  * If sending the wiphy data didn't fit (ENOBUFS
1801                                  * or EMSGSIZE returned), this SKB is still
1802                                  * empty (so it's not too big because another
1803                                  * wiphy dataset is already in the skb) and
1804                                  * we've not tried to adjust the dump allocation
1805                                  * yet ... then adjust the alloc size to be
1806                                  * bigger, and return 1 but with the empty skb.
1807                                  * This results in an empty message being RX'ed
1808                                  * in userspace, but that is ignored.
1809                                  *
1810                                  * We can then retry with the larger buffer.
1811                                  */
1812                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1813                                     !skb->len && !state->split &&
1814                                     cb->min_dump_alloc < 4096) {
1815                                         cb->min_dump_alloc = 4096;
1816                                         state->split_start = 0;
1817                                         rtnl_unlock();
1818                                         return 1;
1819                                 }
1820                                 idx--;
1821                                 break;
1822                         }
1823                 } while (state->split_start > 0);
1824                 break;
1825         }
1826         rtnl_unlock();
1827
1828         state->start = idx;
1829
1830         return skb->len;
1831 }
1832
1833 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1834 {
1835         kfree((void *)cb->args[0]);
1836         return 0;
1837 }
1838
1839 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1840 {
1841         struct sk_buff *msg;
1842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1843         struct nl80211_dump_wiphy_state state = {};
1844
1845         msg = nlmsg_new(4096, GFP_KERNEL);
1846         if (!msg)
1847                 return -ENOMEM;
1848
1849         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1850                                info->snd_portid, info->snd_seq, 0,
1851                                &state) < 0) {
1852                 nlmsg_free(msg);
1853                 return -ENOBUFS;
1854         }
1855
1856         return genlmsg_reply(msg, info);
1857 }
1858
1859 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1860         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1861         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1862         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1863         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1864         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1865 };
1866
1867 static int parse_txq_params(struct nlattr *tb[],
1868                             struct ieee80211_txq_params *txq_params)
1869 {
1870         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1871             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1872             !tb[NL80211_TXQ_ATTR_AIFS])
1873                 return -EINVAL;
1874
1875         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1876         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1877         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1878         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1879         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1880
1881         if (txq_params->ac >= NL80211_NUM_ACS)
1882                 return -EINVAL;
1883
1884         return 0;
1885 }
1886
1887 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1888 {
1889         /*
1890          * You can only set the channel explicitly for WDS interfaces,
1891          * all others have their channel managed via their respective
1892          * "establish a connection" command (connect, join, ...)
1893          *
1894          * For AP/GO and mesh mode, the channel can be set with the
1895          * channel userspace API, but is only stored and passed to the
1896          * low-level driver when the AP starts or the mesh is joined.
1897          * This is for backward compatibility, userspace can also give
1898          * the channel in the start-ap or join-mesh commands instead.
1899          *
1900          * Monitors are special as they are normally slaved to
1901          * whatever else is going on, so they have their own special
1902          * operation to set the monitor channel if possible.
1903          */
1904         return !wdev ||
1905                 wdev->iftype == NL80211_IFTYPE_AP ||
1906                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1907                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1908                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1909 }
1910
1911 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1912                                  struct genl_info *info,
1913                                  struct cfg80211_chan_def *chandef)
1914 {
1915         u32 control_freq;
1916
1917         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1918                 return -EINVAL;
1919
1920         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1921
1922         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1923         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1924         chandef->center_freq1 = control_freq;
1925         chandef->center_freq2 = 0;
1926
1927         /* Primary channel not allowed */
1928         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1929                 return -EINVAL;
1930
1931         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1932                 enum nl80211_channel_type chantype;
1933
1934                 chantype = nla_get_u32(
1935                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1936
1937                 switch (chantype) {
1938                 case NL80211_CHAN_NO_HT:
1939                 case NL80211_CHAN_HT20:
1940                 case NL80211_CHAN_HT40PLUS:
1941                 case NL80211_CHAN_HT40MINUS:
1942                         cfg80211_chandef_create(chandef, chandef->chan,
1943                                                 chantype);
1944                         break;
1945                 default:
1946                         return -EINVAL;
1947                 }
1948         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1949                 chandef->width =
1950                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1951                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1952                         chandef->center_freq1 =
1953                                 nla_get_u32(
1954                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1955                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1956                         chandef->center_freq2 =
1957                                 nla_get_u32(
1958                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1959         }
1960
1961         if (!cfg80211_chandef_valid(chandef))
1962                 return -EINVAL;
1963
1964         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1965                                      IEEE80211_CHAN_DISABLED))
1966                 return -EINVAL;
1967
1968         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1969              chandef->width == NL80211_CHAN_WIDTH_10) &&
1970             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1971                 return -EINVAL;
1972
1973         return 0;
1974 }
1975
1976 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1977                                  struct net_device *dev,
1978                                  struct genl_info *info)
1979 {
1980         struct cfg80211_chan_def chandef;
1981         int result;
1982         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1983         struct wireless_dev *wdev = NULL;
1984
1985         if (dev)
1986                 wdev = dev->ieee80211_ptr;
1987         if (!nl80211_can_set_dev_channel(wdev))
1988                 return -EOPNOTSUPP;
1989         if (wdev)
1990                 iftype = wdev->iftype;
1991
1992         result = nl80211_parse_chandef(rdev, info, &chandef);
1993         if (result)
1994                 return result;
1995
1996         switch (iftype) {
1997         case NL80211_IFTYPE_AP:
1998         case NL80211_IFTYPE_P2P_GO:
1999                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2000                         result = -EINVAL;
2001                         break;
2002                 }
2003                 if (wdev->beacon_interval) {
2004                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2005                             !(rdev->wiphy.features &
2006                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2007                                 result = -EBUSY;
2008                                 break;
2009                         }
2010
2011                         /* Only allow dynamic channel width changes */
2012                         if (chandef.chan != wdev->preset_chandef.chan) {
2013                                 result = -EBUSY;
2014                                 break;
2015                         }
2016                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2017                         if (result)
2018                                 break;
2019                 }
2020                 wdev->preset_chandef = chandef;
2021                 result = 0;
2022                 break;
2023         case NL80211_IFTYPE_MESH_POINT:
2024                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2025                 break;
2026         case NL80211_IFTYPE_MONITOR:
2027                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2028                 break;
2029         default:
2030                 result = -EINVAL;
2031         }
2032
2033         return result;
2034 }
2035
2036 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2037 {
2038         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2039         struct net_device *netdev = info->user_ptr[1];
2040
2041         return __nl80211_set_channel(rdev, netdev, info);
2042 }
2043
2044 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2045 {
2046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2047         struct net_device *dev = info->user_ptr[1];
2048         struct wireless_dev *wdev = dev->ieee80211_ptr;
2049         const u8 *bssid;
2050
2051         if (!info->attrs[NL80211_ATTR_MAC])
2052                 return -EINVAL;
2053
2054         if (netif_running(dev))
2055                 return -EBUSY;
2056
2057         if (!rdev->ops->set_wds_peer)
2058                 return -EOPNOTSUPP;
2059
2060         if (wdev->iftype != NL80211_IFTYPE_WDS)
2061                 return -EOPNOTSUPP;
2062
2063         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2064         return rdev_set_wds_peer(rdev, dev, bssid);
2065 }
2066
2067
2068 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2069 {
2070         struct cfg80211_registered_device *rdev;
2071         struct net_device *netdev = NULL;
2072         struct wireless_dev *wdev;
2073         int result = 0, rem_txq_params = 0;
2074         struct nlattr *nl_txq_params;
2075         u32 changed;
2076         u8 retry_short = 0, retry_long = 0;
2077         u32 frag_threshold = 0, rts_threshold = 0;
2078         u8 coverage_class = 0;
2079
2080         ASSERT_RTNL();
2081
2082         /*
2083          * Try to find the wiphy and netdev. Normally this
2084          * function shouldn't need the netdev, but this is
2085          * done for backward compatibility -- previously
2086          * setting the channel was done per wiphy, but now
2087          * it is per netdev. Previous userland like hostapd
2088          * also passed a netdev to set_wiphy, so that it is
2089          * possible to let that go to the right netdev!
2090          */
2091
2092         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2093                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2094
2095                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2096                 if (netdev && netdev->ieee80211_ptr)
2097                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2098                 else
2099                         netdev = NULL;
2100         }
2101
2102         if (!netdev) {
2103                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2104                                                   info->attrs);
2105                 if (IS_ERR(rdev))
2106                         return PTR_ERR(rdev);
2107                 wdev = NULL;
2108                 netdev = NULL;
2109                 result = 0;
2110         } else
2111                 wdev = netdev->ieee80211_ptr;
2112
2113         /*
2114          * end workaround code, by now the rdev is available
2115          * and locked, and wdev may or may not be NULL.
2116          */
2117
2118         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2119                 result = cfg80211_dev_rename(
2120                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2121
2122         if (result)
2123                 return result;
2124
2125         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2126                 struct ieee80211_txq_params txq_params;
2127                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2128
2129                 if (!rdev->ops->set_txq_params)
2130                         return -EOPNOTSUPP;
2131
2132                 if (!netdev)
2133                         return -EINVAL;
2134
2135                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2136                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2137                         return -EINVAL;
2138
2139                 if (!netif_running(netdev))
2140                         return -ENETDOWN;
2141
2142                 nla_for_each_nested(nl_txq_params,
2143                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2144                                     rem_txq_params) {
2145                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2146                                            nla_data(nl_txq_params),
2147                                            nla_len(nl_txq_params),
2148                                            txq_params_policy);
2149                         if (result)
2150                                 return result;
2151                         result = parse_txq_params(tb, &txq_params);
2152                         if (result)
2153                                 return result;
2154
2155                         result = rdev_set_txq_params(rdev, netdev,
2156                                                      &txq_params);
2157                         if (result)
2158                                 return result;
2159                 }
2160         }
2161
2162         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2163                 result = __nl80211_set_channel(
2164                         rdev,
2165                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2166                         info);
2167                 if (result)
2168                         return result;
2169         }
2170
2171         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2172                 struct wireless_dev *txp_wdev = wdev;
2173                 enum nl80211_tx_power_setting type;
2174                 int idx, mbm = 0;
2175
2176                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2177                         txp_wdev = NULL;
2178
2179                 if (!rdev->ops->set_tx_power)
2180                         return -EOPNOTSUPP;
2181
2182                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2183                 type = nla_get_u32(info->attrs[idx]);
2184
2185                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2186                     (type != NL80211_TX_POWER_AUTOMATIC))
2187                         return -EINVAL;
2188
2189                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2190                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2191                         mbm = nla_get_u32(info->attrs[idx]);
2192                 }
2193
2194                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2195                 if (result)
2196                         return result;
2197         }
2198
2199         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2200             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2201                 u32 tx_ant, rx_ant;
2202                 if ((!rdev->wiphy.available_antennas_tx &&
2203                      !rdev->wiphy.available_antennas_rx) ||
2204                     !rdev->ops->set_antenna)
2205                         return -EOPNOTSUPP;
2206
2207                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2208                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2209
2210                 /* reject antenna configurations which don't match the
2211                  * available antenna masks, except for the "all" mask */
2212                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2213                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2214                         return -EINVAL;
2215
2216                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2217                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2218
2219                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2220                 if (result)
2221                         return result;
2222         }
2223
2224         changed = 0;
2225
2226         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2227                 retry_short = nla_get_u8(
2228                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2229                 if (retry_short == 0)
2230                         return -EINVAL;
2231
2232                 changed |= WIPHY_PARAM_RETRY_SHORT;
2233         }
2234
2235         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2236                 retry_long = nla_get_u8(
2237                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2238                 if (retry_long == 0)
2239                         return -EINVAL;
2240
2241                 changed |= WIPHY_PARAM_RETRY_LONG;
2242         }
2243
2244         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2245                 frag_threshold = nla_get_u32(
2246                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2247                 if (frag_threshold < 256)
2248                         return -EINVAL;
2249
2250                 if (frag_threshold != (u32) -1) {
2251                         /*
2252                          * Fragments (apart from the last one) are required to
2253                          * have even length. Make the fragmentation code
2254                          * simpler by stripping LSB should someone try to use
2255                          * odd threshold value.
2256                          */
2257                         frag_threshold &= ~0x1;
2258                 }
2259                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2260         }
2261
2262         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2263                 rts_threshold = nla_get_u32(
2264                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2265                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2266         }
2267
2268         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2269                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2270                         return -EINVAL;
2271
2272                 coverage_class = nla_get_u8(
2273                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2274                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2275         }
2276
2277         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2278                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2279                         return -EOPNOTSUPP;
2280
2281                 changed |= WIPHY_PARAM_DYN_ACK;
2282         }
2283
2284         if (changed) {
2285                 u8 old_retry_short, old_retry_long;
2286                 u32 old_frag_threshold, old_rts_threshold;
2287                 u8 old_coverage_class;
2288
2289                 if (!rdev->ops->set_wiphy_params)
2290                         return -EOPNOTSUPP;
2291
2292                 old_retry_short = rdev->wiphy.retry_short;
2293                 old_retry_long = rdev->wiphy.retry_long;
2294                 old_frag_threshold = rdev->wiphy.frag_threshold;
2295                 old_rts_threshold = rdev->wiphy.rts_threshold;
2296                 old_coverage_class = rdev->wiphy.coverage_class;
2297
2298                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2299                         rdev->wiphy.retry_short = retry_short;
2300                 if (changed & WIPHY_PARAM_RETRY_LONG)
2301                         rdev->wiphy.retry_long = retry_long;
2302                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2303                         rdev->wiphy.frag_threshold = frag_threshold;
2304                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2305                         rdev->wiphy.rts_threshold = rts_threshold;
2306                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2307                         rdev->wiphy.coverage_class = coverage_class;
2308
2309                 result = rdev_set_wiphy_params(rdev, changed);
2310                 if (result) {
2311                         rdev->wiphy.retry_short = old_retry_short;
2312                         rdev->wiphy.retry_long = old_retry_long;
2313                         rdev->wiphy.frag_threshold = old_frag_threshold;
2314                         rdev->wiphy.rts_threshold = old_rts_threshold;
2315                         rdev->wiphy.coverage_class = old_coverage_class;
2316                 }
2317         }
2318         return 0;
2319 }
2320
2321 static inline u64 wdev_id(struct wireless_dev *wdev)
2322 {
2323         return (u64)wdev->identifier |
2324                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2325 }
2326
2327 static int nl80211_send_chandef(struct sk_buff *msg,
2328                                 const struct cfg80211_chan_def *chandef)
2329 {
2330         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2331                 return -EINVAL;
2332
2333         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2334                         chandef->chan->center_freq))
2335                 return -ENOBUFS;
2336         switch (chandef->width) {
2337         case NL80211_CHAN_WIDTH_20_NOHT:
2338         case NL80211_CHAN_WIDTH_20:
2339         case NL80211_CHAN_WIDTH_40:
2340                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2341                                 cfg80211_get_chandef_type(chandef)))
2342                         return -ENOBUFS;
2343                 break;
2344         default:
2345                 break;
2346         }
2347         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2348                 return -ENOBUFS;
2349         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2350                 return -ENOBUFS;
2351         if (chandef->center_freq2 &&
2352             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2353                 return -ENOBUFS;
2354         return 0;
2355 }
2356
2357 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2358                               struct cfg80211_registered_device *rdev,
2359                               struct wireless_dev *wdev, bool removal)
2360 {
2361         struct net_device *dev = wdev->netdev;
2362         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2363         void *hdr;
2364
2365         if (removal)
2366                 cmd = NL80211_CMD_DEL_INTERFACE;
2367
2368         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2369         if (!hdr)
2370                 return -1;
2371
2372         if (dev &&
2373             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2374              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2375                 goto nla_put_failure;
2376
2377         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2378             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2379             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2380             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2381             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2382                         rdev->devlist_generation ^
2383                         (cfg80211_rdev_list_generation << 2)))
2384                 goto nla_put_failure;
2385
2386         if (rdev->ops->get_channel) {
2387                 int ret;
2388                 struct cfg80211_chan_def chandef;
2389
2390                 ret = rdev_get_channel(rdev, wdev, &chandef);
2391                 if (ret == 0) {
2392                         if (nl80211_send_chandef(msg, &chandef))
2393                                 goto nla_put_failure;
2394                 }
2395         }
2396
2397         if (wdev->ssid_len) {
2398                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2399                         goto nla_put_failure;
2400         }
2401
2402         return genlmsg_end(msg, hdr);
2403
2404  nla_put_failure:
2405         genlmsg_cancel(msg, hdr);
2406         return -EMSGSIZE;
2407 }
2408
2409 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2410 {
2411         int wp_idx = 0;
2412         int if_idx = 0;
2413         int wp_start = cb->args[0];
2414         int if_start = cb->args[1];
2415         struct cfg80211_registered_device *rdev;
2416         struct wireless_dev *wdev;
2417
2418         rtnl_lock();
2419         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2420                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2421                         continue;
2422                 if (wp_idx < wp_start) {
2423                         wp_idx++;
2424                         continue;
2425                 }
2426                 if_idx = 0;
2427
2428                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2429                         if (if_idx < if_start) {
2430                                 if_idx++;
2431                                 continue;
2432                         }
2433                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2434                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2435                                                rdev, wdev, false) < 0) {
2436                                 goto out;
2437                         }
2438                         if_idx++;
2439                 }
2440
2441                 wp_idx++;
2442         }
2443  out:
2444         rtnl_unlock();
2445
2446         cb->args[0] = wp_idx;
2447         cb->args[1] = if_idx;
2448
2449         return skb->len;
2450 }
2451
2452 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2453 {
2454         struct sk_buff *msg;
2455         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2456         struct wireless_dev *wdev = info->user_ptr[1];
2457
2458         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2459         if (!msg)
2460                 return -ENOMEM;
2461
2462         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2463                                rdev, wdev, false) < 0) {
2464                 nlmsg_free(msg);
2465                 return -ENOBUFS;
2466         }
2467
2468         return genlmsg_reply(msg, info);
2469 }
2470
2471 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2472         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2473         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2474         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2475         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2476         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2477         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2478 };
2479
2480 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2481 {
2482         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2483         int flag;
2484
2485         *mntrflags = 0;
2486
2487         if (!nla)
2488                 return -EINVAL;
2489
2490         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2491                              nla, mntr_flags_policy))
2492                 return -EINVAL;
2493
2494         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2495                 if (flags[flag])
2496                         *mntrflags |= (1<<flag);
2497
2498         return 0;
2499 }
2500
2501 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2502                                struct net_device *netdev, u8 use_4addr,
2503                                enum nl80211_iftype iftype)
2504 {
2505         if (!use_4addr) {
2506                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2507                         return -EBUSY;
2508                 return 0;
2509         }
2510
2511         switch (iftype) {
2512         case NL80211_IFTYPE_AP_VLAN:
2513                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2514                         return 0;
2515                 break;
2516         case NL80211_IFTYPE_STATION:
2517                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2518                         return 0;
2519                 break;
2520         default:
2521                 break;
2522         }
2523
2524         return -EOPNOTSUPP;
2525 }
2526
2527 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2528 {
2529         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2530         struct vif_params params;
2531         int err;
2532         enum nl80211_iftype otype, ntype;
2533         struct net_device *dev = info->user_ptr[1];
2534         u32 _flags, *flags = NULL;
2535         bool change = false;
2536
2537         memset(&params, 0, sizeof(params));
2538
2539         otype = ntype = dev->ieee80211_ptr->iftype;
2540
2541         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2542                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2543                 if (otype != ntype)
2544                         change = true;
2545                 if (ntype > NL80211_IFTYPE_MAX)
2546                         return -EINVAL;
2547         }
2548
2549         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2550                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2551
2552                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2553                         return -EINVAL;
2554                 if (netif_running(dev))
2555                         return -EBUSY;
2556
2557                 wdev_lock(wdev);
2558                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2559                              IEEE80211_MAX_MESH_ID_LEN);
2560                 wdev->mesh_id_up_len =
2561                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2562                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2563                        wdev->mesh_id_up_len);
2564                 wdev_unlock(wdev);
2565         }
2566
2567         if (info->attrs[NL80211_ATTR_4ADDR]) {
2568                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2569                 change = true;
2570                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2571                 if (err)
2572                         return err;
2573         } else {
2574                 params.use_4addr = -1;
2575         }
2576
2577         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2578                 if (ntype != NL80211_IFTYPE_MONITOR)
2579                         return -EINVAL;
2580                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2581                                           &_flags);
2582                 if (err)
2583                         return err;
2584
2585                 flags = &_flags;
2586                 change = true;
2587         }
2588
2589         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2590             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2591                 return -EOPNOTSUPP;
2592
2593         if (change)
2594                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2595         else
2596                 err = 0;
2597
2598         if (!err && params.use_4addr != -1)
2599                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2600
2601         return err;
2602 }
2603
2604 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2605 {
2606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2607         struct vif_params params;
2608         struct wireless_dev *wdev;
2609         struct sk_buff *msg, *event;
2610         int err;
2611         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2612         u32 flags;
2613
2614         /* to avoid failing a new interface creation due to pending removal */
2615         cfg80211_destroy_ifaces(rdev);
2616
2617         memset(&params, 0, sizeof(params));
2618
2619         if (!info->attrs[NL80211_ATTR_IFNAME])
2620                 return -EINVAL;
2621
2622         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2623                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2624                 if (type > NL80211_IFTYPE_MAX)
2625                         return -EINVAL;
2626         }
2627
2628         if (!rdev->ops->add_virtual_intf ||
2629             !(rdev->wiphy.interface_modes & (1 << type)))
2630                 return -EOPNOTSUPP;
2631
2632         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2633              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2634             info->attrs[NL80211_ATTR_MAC]) {
2635                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2636                            ETH_ALEN);
2637                 if (!is_valid_ether_addr(params.macaddr))
2638                         return -EADDRNOTAVAIL;
2639         }
2640
2641         if (info->attrs[NL80211_ATTR_4ADDR]) {
2642                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2643                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2644                 if (err)
2645                         return err;
2646         }
2647
2648         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2649         if (!msg)
2650                 return -ENOMEM;
2651
2652         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2653                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2654                                   &flags);
2655
2656         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2657             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2658                 return -EOPNOTSUPP;
2659
2660         wdev = rdev_add_virtual_intf(rdev,
2661                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2662                                 type, err ? NULL : &flags, &params);
2663         if (WARN_ON(!wdev)) {
2664                 nlmsg_free(msg);
2665                 return -EPROTO;
2666         } else if (IS_ERR(wdev)) {
2667                 nlmsg_free(msg);
2668                 return PTR_ERR(wdev);
2669         }
2670
2671         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2672                 wdev->owner_nlportid = info->snd_portid;
2673
2674         switch (type) {
2675         case NL80211_IFTYPE_MESH_POINT:
2676                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2677                         break;
2678                 wdev_lock(wdev);
2679                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2680                              IEEE80211_MAX_MESH_ID_LEN);
2681                 wdev->mesh_id_up_len =
2682                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2683                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2684                        wdev->mesh_id_up_len);
2685                 wdev_unlock(wdev);
2686                 break;
2687         case NL80211_IFTYPE_P2P_DEVICE:
2688                 /*
2689                  * P2P Device doesn't have a netdev, so doesn't go
2690                  * through the netdev notifier and must be added here
2691                  */
2692                 mutex_init(&wdev->mtx);
2693                 INIT_LIST_HEAD(&wdev->event_list);
2694                 spin_lock_init(&wdev->event_lock);
2695                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2696                 spin_lock_init(&wdev->mgmt_registrations_lock);
2697
2698                 wdev->identifier = ++rdev->wdev_id;
2699                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2700                 rdev->devlist_generation++;
2701                 break;
2702         default:
2703                 break;
2704         }
2705
2706         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2707                                rdev, wdev, false) < 0) {
2708                 nlmsg_free(msg);
2709                 return -ENOBUFS;
2710         }
2711
2712         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2713         if (event) {
2714                 if (nl80211_send_iface(event, 0, 0, 0,
2715                                        rdev, wdev, false) < 0) {
2716                         nlmsg_free(event);
2717                         goto out;
2718                 }
2719
2720                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2721                                         event, 0, NL80211_MCGRP_CONFIG,
2722                                         GFP_KERNEL);
2723         }
2724
2725 out:
2726         return genlmsg_reply(msg, info);
2727 }
2728
2729 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2730 {
2731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2732         struct wireless_dev *wdev = info->user_ptr[1];
2733         struct sk_buff *msg;
2734         int status;
2735
2736         if (!rdev->ops->del_virtual_intf)
2737                 return -EOPNOTSUPP;
2738
2739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2740         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2741                 nlmsg_free(msg);
2742                 msg = NULL;
2743         }
2744
2745         /*
2746          * If we remove a wireless device without a netdev then clear
2747          * user_ptr[1] so that nl80211_post_doit won't dereference it
2748          * to check if it needs to do dev_put(). Otherwise it crashes
2749          * since the wdev has been freed, unlike with a netdev where
2750          * we need the dev_put() for the netdev to really be freed.
2751          */
2752         if (!wdev->netdev)
2753                 info->user_ptr[1] = NULL;
2754
2755         status = rdev_del_virtual_intf(rdev, wdev);
2756         if (status >= 0 && msg)
2757                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2758                                         msg, 0, NL80211_MCGRP_CONFIG,
2759                                         GFP_KERNEL);
2760         else
2761                 nlmsg_free(msg);
2762
2763         return status;
2764 }
2765
2766 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2767 {
2768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2769         struct net_device *dev = info->user_ptr[1];
2770         u16 noack_map;
2771
2772         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2773                 return -EINVAL;
2774
2775         if (!rdev->ops->set_noack_map)
2776                 return -EOPNOTSUPP;
2777
2778         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2779
2780         return rdev_set_noack_map(rdev, dev, noack_map);
2781 }
2782
2783 struct get_key_cookie {
2784         struct sk_buff *msg;
2785         int error;
2786         int idx;
2787 };
2788
2789 static void get_key_callback(void *c, struct key_params *params)
2790 {
2791         struct nlattr *key;
2792         struct get_key_cookie *cookie = c;
2793
2794         if ((params->key &&
2795              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2796                      params->key_len, params->key)) ||
2797             (params->seq &&
2798              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2799                      params->seq_len, params->seq)) ||
2800             (params->cipher &&
2801              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2802                          params->cipher)))
2803                 goto nla_put_failure;
2804
2805         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2806         if (!key)
2807                 goto nla_put_failure;
2808
2809         if ((params->key &&
2810              nla_put(cookie->msg, NL80211_KEY_DATA,
2811                      params->key_len, params->key)) ||
2812             (params->seq &&
2813              nla_put(cookie->msg, NL80211_KEY_SEQ,
2814                      params->seq_len, params->seq)) ||
2815             (params->cipher &&
2816              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2817                          params->cipher)))
2818                 goto nla_put_failure;
2819
2820         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2821                 goto nla_put_failure;
2822
2823         nla_nest_end(cookie->msg, key);
2824
2825         return;
2826  nla_put_failure:
2827         cookie->error = 1;
2828 }
2829
2830 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2831 {
2832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2833         int err;
2834         struct net_device *dev = info->user_ptr[1];
2835         u8 key_idx = 0;
2836         const u8 *mac_addr = NULL;
2837         bool pairwise;
2838         struct get_key_cookie cookie = {
2839                 .error = 0,
2840         };
2841         void *hdr;
2842         struct sk_buff *msg;
2843
2844         if (info->attrs[NL80211_ATTR_KEY_IDX])
2845                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2846
2847         if (key_idx > 5)
2848                 return -EINVAL;
2849
2850         if (info->attrs[NL80211_ATTR_MAC])
2851                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2852
2853         pairwise = !!mac_addr;
2854         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2855                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2856                 if (kt >= NUM_NL80211_KEYTYPES)
2857                         return -EINVAL;
2858                 if (kt != NL80211_KEYTYPE_GROUP &&
2859                     kt != NL80211_KEYTYPE_PAIRWISE)
2860                         return -EINVAL;
2861                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2862         }
2863
2864         if (!rdev->ops->get_key)
2865                 return -EOPNOTSUPP;
2866
2867         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2868         if (!msg)
2869                 return -ENOMEM;
2870
2871         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2872                              NL80211_CMD_NEW_KEY);
2873         if (!hdr)
2874                 goto nla_put_failure;
2875
2876         cookie.msg = msg;
2877         cookie.idx = key_idx;
2878
2879         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2880             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2881                 goto nla_put_failure;
2882         if (mac_addr &&
2883             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2884                 goto nla_put_failure;
2885
2886         if (pairwise && mac_addr &&
2887             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2888                 return -ENOENT;
2889
2890         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2891                            get_key_callback);
2892
2893         if (err)
2894                 goto free_msg;
2895
2896         if (cookie.error)
2897                 goto nla_put_failure;
2898
2899         genlmsg_end(msg, hdr);
2900         return genlmsg_reply(msg, info);
2901
2902  nla_put_failure:
2903         err = -ENOBUFS;
2904  free_msg:
2905         nlmsg_free(msg);
2906         return err;
2907 }
2908
2909 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2910 {
2911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2912         struct key_parse key;
2913         int err;
2914         struct net_device *dev = info->user_ptr[1];
2915
2916         err = nl80211_parse_key(info, &key);
2917         if (err)
2918                 return err;
2919
2920         if (key.idx < 0)
2921                 return -EINVAL;
2922
2923         /* only support setting default key */
2924         if (!key.def && !key.defmgmt)
2925                 return -EINVAL;
2926
2927         wdev_lock(dev->ieee80211_ptr);
2928
2929         if (key.def) {
2930                 if (!rdev->ops->set_default_key) {
2931                         err = -EOPNOTSUPP;
2932                         goto out;
2933                 }
2934
2935                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2936                 if (err)
2937                         goto out;
2938
2939                 err = rdev_set_default_key(rdev, dev, key.idx,
2940                                                  key.def_uni, key.def_multi);
2941
2942                 if (err)
2943                         goto out;
2944
2945 #ifdef CONFIG_CFG80211_WEXT
2946                 dev->ieee80211_ptr->wext.default_key = key.idx;
2947 #endif
2948         } else {
2949                 if (key.def_uni || !key.def_multi) {
2950                         err = -EINVAL;
2951                         goto out;
2952                 }
2953
2954                 if (!rdev->ops->set_default_mgmt_key) {
2955                         err = -EOPNOTSUPP;
2956                         goto out;
2957                 }
2958
2959                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2960                 if (err)
2961                         goto out;
2962
2963                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2964                 if (err)
2965                         goto out;
2966
2967 #ifdef CONFIG_CFG80211_WEXT
2968                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2969 #endif
2970         }
2971
2972  out:
2973         wdev_unlock(dev->ieee80211_ptr);
2974
2975         return err;
2976 }
2977
2978 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2979 {
2980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2981         int err;
2982         struct net_device *dev = info->user_ptr[1];
2983         struct key_parse key;
2984         const u8 *mac_addr = NULL;
2985
2986         err = nl80211_parse_key(info, &key);
2987         if (err)
2988                 return err;
2989
2990         if (!key.p.key)
2991                 return -EINVAL;
2992
2993         if (info->attrs[NL80211_ATTR_MAC])
2994                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2995
2996         if (key.type == -1) {
2997                 if (mac_addr)
2998                         key.type = NL80211_KEYTYPE_PAIRWISE;
2999                 else
3000                         key.type = NL80211_KEYTYPE_GROUP;
3001         }
3002
3003         /* for now */
3004         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3005             key.type != NL80211_KEYTYPE_GROUP)
3006                 return -EINVAL;
3007
3008         if (!rdev->ops->add_key)
3009                 return -EOPNOTSUPP;
3010
3011         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3012                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3013                                            mac_addr))
3014                 return -EINVAL;
3015
3016         wdev_lock(dev->ieee80211_ptr);
3017         err = nl80211_key_allowed(dev->ieee80211_ptr);
3018         if (!err)
3019                 err = rdev_add_key(rdev, dev, key.idx,
3020                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3021                                     mac_addr, &key.p);
3022         wdev_unlock(dev->ieee80211_ptr);
3023
3024         return err;
3025 }
3026
3027 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3028 {
3029         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3030         int err;
3031         struct net_device *dev = info->user_ptr[1];
3032         u8 *mac_addr = NULL;
3033         struct key_parse key;
3034
3035         err = nl80211_parse_key(info, &key);
3036         if (err)
3037                 return err;
3038
3039         if (info->attrs[NL80211_ATTR_MAC])
3040                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3041
3042         if (key.type == -1) {
3043                 if (mac_addr)
3044                         key.type = NL80211_KEYTYPE_PAIRWISE;
3045                 else
3046                         key.type = NL80211_KEYTYPE_GROUP;
3047         }
3048
3049         /* for now */
3050         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3051             key.type != NL80211_KEYTYPE_GROUP)
3052                 return -EINVAL;
3053
3054         if (!rdev->ops->del_key)
3055                 return -EOPNOTSUPP;
3056
3057         wdev_lock(dev->ieee80211_ptr);
3058         err = nl80211_key_allowed(dev->ieee80211_ptr);
3059
3060         if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr &&
3061             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3062                 err = -ENOENT;
3063
3064         if (!err)
3065                 err = rdev_del_key(rdev, dev, key.idx,
3066                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3067                                    mac_addr);
3068
3069 #ifdef CONFIG_CFG80211_WEXT
3070         if (!err) {
3071                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3072                         dev->ieee80211_ptr->wext.default_key = -1;
3073                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3074                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3075         }
3076 #endif
3077         wdev_unlock(dev->ieee80211_ptr);
3078
3079         return err;
3080 }
3081
3082 /* This function returns an error or the number of nested attributes */
3083 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3084 {
3085         struct nlattr *attr;
3086         int n_entries = 0, tmp;
3087
3088         nla_for_each_nested(attr, nl_attr, tmp) {
3089                 if (nla_len(attr) != ETH_ALEN)
3090                         return -EINVAL;
3091
3092                 n_entries++;
3093         }
3094
3095         return n_entries;
3096 }
3097
3098 /*
3099  * This function parses ACL information and allocates memory for ACL data.
3100  * On successful return, the calling function is responsible to free the
3101  * ACL buffer returned by this function.
3102  */
3103 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3104                                                 struct genl_info *info)
3105 {
3106         enum nl80211_acl_policy acl_policy;
3107         struct nlattr *attr;
3108         struct cfg80211_acl_data *acl;
3109         int i = 0, n_entries, tmp;
3110
3111         if (!wiphy->max_acl_mac_addrs)
3112                 return ERR_PTR(-EOPNOTSUPP);
3113
3114         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3115                 return ERR_PTR(-EINVAL);
3116
3117         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3118         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3119             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3120                 return ERR_PTR(-EINVAL);
3121
3122         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3123                 return ERR_PTR(-EINVAL);
3124
3125         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3126         if (n_entries < 0)
3127                 return ERR_PTR(n_entries);
3128
3129         if (n_entries > wiphy->max_acl_mac_addrs)
3130                 return ERR_PTR(-ENOTSUPP);
3131
3132         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3133                       GFP_KERNEL);
3134         if (!acl)
3135                 return ERR_PTR(-ENOMEM);
3136
3137         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3138                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3139                 i++;
3140         }
3141
3142         acl->n_acl_entries = n_entries;
3143         acl->acl_policy = acl_policy;
3144
3145         return acl;
3146 }
3147
3148 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3149 {
3150         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3151         struct net_device *dev = info->user_ptr[1];
3152         struct cfg80211_acl_data *acl;
3153         int err;
3154
3155         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3156             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3157                 return -EOPNOTSUPP;
3158
3159         if (!dev->ieee80211_ptr->beacon_interval)
3160                 return -EINVAL;
3161
3162         acl = parse_acl_data(&rdev->wiphy, info);
3163         if (IS_ERR(acl))
3164                 return PTR_ERR(acl);
3165
3166         err = rdev_set_mac_acl(rdev, dev, acl);
3167
3168         kfree(acl);
3169
3170         return err;
3171 }
3172
3173 static int nl80211_parse_beacon(struct nlattr *attrs[],
3174                                 struct cfg80211_beacon_data *bcn)
3175 {
3176         bool haveinfo = false;
3177
3178         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3179             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3180             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3181             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3182                 return -EINVAL;
3183
3184         memset(bcn, 0, sizeof(*bcn));
3185
3186         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3187                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3188                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3189                 if (!bcn->head_len)
3190                         return -EINVAL;
3191                 haveinfo = true;
3192         }
3193
3194         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3195                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3196                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3197                 haveinfo = true;
3198         }
3199
3200         if (!haveinfo)
3201                 return -EINVAL;
3202
3203         if (attrs[NL80211_ATTR_IE]) {
3204                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3205                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3206         }
3207
3208         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3209                 bcn->proberesp_ies =
3210                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3211                 bcn->proberesp_ies_len =
3212                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3213         }
3214
3215         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3216                 bcn->assocresp_ies =
3217                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3218                 bcn->assocresp_ies_len =
3219                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3220         }
3221
3222         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3223                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3224                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3225         }
3226
3227         return 0;
3228 }
3229
3230 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3231                                    struct cfg80211_ap_settings *params)
3232 {
3233         struct wireless_dev *wdev;
3234         bool ret = false;
3235
3236         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3237                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3238                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3239                         continue;
3240
3241                 if (!wdev->preset_chandef.chan)
3242                         continue;
3243
3244                 params->chandef = wdev->preset_chandef;
3245                 ret = true;
3246                 break;
3247         }
3248
3249         return ret;
3250 }
3251
3252 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3253                                     enum nl80211_auth_type auth_type,
3254                                     enum nl80211_commands cmd)
3255 {
3256         if (auth_type > NL80211_AUTHTYPE_MAX)
3257                 return false;
3258
3259         switch (cmd) {
3260         case NL80211_CMD_AUTHENTICATE:
3261                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3262                     auth_type == NL80211_AUTHTYPE_SAE)
3263                         return false;
3264                 return true;
3265         case NL80211_CMD_CONNECT:
3266         case NL80211_CMD_START_AP:
3267                 /* SAE not supported yet */
3268                 if (auth_type == NL80211_AUTHTYPE_SAE)
3269                         return false;
3270                 return true;
3271         default:
3272                 return false;
3273         }
3274 }
3275
3276 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3277 {
3278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3279         struct net_device *dev = info->user_ptr[1];
3280         struct wireless_dev *wdev = dev->ieee80211_ptr;
3281         struct cfg80211_ap_settings params;
3282         int err;
3283
3284         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3285             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3286                 return -EOPNOTSUPP;
3287
3288         if (!rdev->ops->start_ap)
3289                 return -EOPNOTSUPP;
3290
3291         if (wdev->beacon_interval)
3292                 return -EALREADY;
3293
3294         memset(&params, 0, sizeof(params));
3295
3296         /* these are required for START_AP */
3297         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3298             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3299             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3300                 return -EINVAL;
3301
3302         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3303         if (err)
3304                 return err;
3305
3306         params.beacon_interval =
3307                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3308         params.dtim_period =
3309                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3310
3311         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3312         if (err)
3313                 return err;
3314
3315         /*
3316          * In theory, some of these attributes should be required here
3317          * but since they were not used when the command was originally
3318          * added, keep them optional for old user space programs to let
3319          * them continue to work with drivers that do not need the
3320          * additional information -- drivers must check!
3321          */
3322         if (info->attrs[NL80211_ATTR_SSID]) {
3323                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3324                 params.ssid_len =
3325                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3326                 if (params.ssid_len == 0 ||
3327                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3328                         return -EINVAL;
3329         }
3330
3331         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3332                 params.hidden_ssid = nla_get_u32(
3333                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3334                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3335                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3336                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3337                         return -EINVAL;
3338         }
3339
3340         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3341
3342         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3343                 params.auth_type = nla_get_u32(
3344                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3345                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3346                                              NL80211_CMD_START_AP))
3347                         return -EINVAL;
3348         } else
3349                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3350
3351         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3352                                       NL80211_MAX_NR_CIPHER_SUITES);
3353         if (err)
3354                 return err;
3355
3356         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3357                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3358                         return -EOPNOTSUPP;
3359                 params.inactivity_timeout = nla_get_u16(
3360                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3361         }
3362
3363         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3364                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3365                         return -EINVAL;
3366                 params.p2p_ctwindow =
3367                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3368                 if (params.p2p_ctwindow > 127)
3369                         return -EINVAL;
3370                 if (params.p2p_ctwindow != 0 &&
3371                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3372                         return -EINVAL;
3373         }
3374
3375         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3376                 u8 tmp;
3377
3378                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3379                         return -EINVAL;
3380                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3381                 if (tmp > 1)
3382                         return -EINVAL;
3383                 params.p2p_opp_ps = tmp;
3384                 if (params.p2p_opp_ps != 0 &&
3385                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3386                         return -EINVAL;
3387         }
3388
3389         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3390                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3391                 if (err)
3392                         return err;
3393         } else if (wdev->preset_chandef.chan) {
3394                 params.chandef = wdev->preset_chandef;
3395         } else if (!nl80211_get_ap_channel(rdev, &params))
3396                 return -EINVAL;
3397
3398         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3399                                      wdev->iftype))
3400                 return -EINVAL;
3401
3402         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3403                 params.acl = parse_acl_data(&rdev->wiphy, info);
3404                 if (IS_ERR(params.acl))
3405                         return PTR_ERR(params.acl);
3406         }
3407
3408         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3409                 params.smps_mode =
3410                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3411                 switch (params.smps_mode) {
3412                 case NL80211_SMPS_OFF:
3413                         break;
3414                 case NL80211_SMPS_STATIC:
3415                         if (!(rdev->wiphy.features &
3416                               NL80211_FEATURE_STATIC_SMPS))
3417                                 return -EINVAL;
3418                         break;
3419                 case NL80211_SMPS_DYNAMIC:
3420                         if (!(rdev->wiphy.features &
3421                               NL80211_FEATURE_DYNAMIC_SMPS))
3422                                 return -EINVAL;
3423                         break;
3424                 default:
3425                         return -EINVAL;
3426                 }
3427         } else {
3428                 params.smps_mode = NL80211_SMPS_OFF;
3429         }
3430
3431         wdev_lock(wdev);
3432         err = rdev_start_ap(rdev, dev, &params);
3433         if (!err) {
3434                 wdev->preset_chandef = params.chandef;
3435                 wdev->beacon_interval = params.beacon_interval;
3436                 wdev->chandef = params.chandef;
3437                 wdev->ssid_len = params.ssid_len;
3438                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3439         }
3440         wdev_unlock(wdev);
3441
3442         kfree(params.acl);
3443
3444         return err;
3445 }
3446
3447 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3448 {
3449         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3450         struct net_device *dev = info->user_ptr[1];
3451         struct wireless_dev *wdev = dev->ieee80211_ptr;
3452         struct cfg80211_beacon_data params;
3453         int err;
3454
3455         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3456             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3457                 return -EOPNOTSUPP;
3458
3459         if (!rdev->ops->change_beacon)
3460                 return -EOPNOTSUPP;
3461
3462         if (!wdev->beacon_interval)
3463                 return -EINVAL;
3464
3465         err = nl80211_parse_beacon(info->attrs, &params);
3466         if (err)
3467                 return err;
3468
3469         wdev_lock(wdev);
3470         err = rdev_change_beacon(rdev, dev, &params);
3471         wdev_unlock(wdev);
3472
3473         return err;
3474 }
3475
3476 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3477 {
3478         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3479         struct net_device *dev = info->user_ptr[1];
3480
3481         return cfg80211_stop_ap(rdev, dev, false);
3482 }
3483
3484 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3485         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3486         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3487         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3488         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3489         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3490         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3491 };
3492
3493 static int parse_station_flags(struct genl_info *info,
3494                                enum nl80211_iftype iftype,
3495                                struct station_parameters *params)
3496 {
3497         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3498         struct nlattr *nla;
3499         int flag;
3500
3501         /*
3502          * Try parsing the new attribute first so userspace
3503          * can specify both for older kernels.
3504          */
3505         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3506         if (nla) {
3507                 struct nl80211_sta_flag_update *sta_flags;
3508
3509                 sta_flags = nla_data(nla);
3510                 params->sta_flags_mask = sta_flags->mask;
3511                 params->sta_flags_set = sta_flags->set;
3512                 params->sta_flags_set &= params->sta_flags_mask;
3513                 if ((params->sta_flags_mask |
3514                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3515                         return -EINVAL;
3516                 return 0;
3517         }
3518
3519         /* if present, parse the old attribute */
3520
3521         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3522         if (!nla)
3523                 return 0;
3524
3525         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3526                              nla, sta_flags_policy))
3527                 return -EINVAL;
3528
3529         /*
3530          * Only allow certain flags for interface types so that
3531          * other attributes are silently ignored. Remember that
3532          * this is backward compatibility code with old userspace
3533          * and shouldn't be hit in other cases anyway.
3534          */
3535         switch (iftype) {
3536         case NL80211_IFTYPE_AP:
3537         case NL80211_IFTYPE_AP_VLAN:
3538         case NL80211_IFTYPE_P2P_GO:
3539                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3540                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3541                                          BIT(NL80211_STA_FLAG_WME) |
3542                                          BIT(NL80211_STA_FLAG_MFP);
3543                 break;
3544         case NL80211_IFTYPE_P2P_CLIENT:
3545         case NL80211_IFTYPE_STATION:
3546                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3547                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3548                 break;
3549         case NL80211_IFTYPE_MESH_POINT:
3550                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3551                                          BIT(NL80211_STA_FLAG_MFP) |
3552                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3553         default:
3554                 return -EINVAL;
3555         }
3556
3557         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3558                 if (flags[flag]) {
3559                         params->sta_flags_set |= (1<<flag);
3560
3561                         /* no longer support new API additions in old API */
3562                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3563                                 return -EINVAL;
3564                 }
3565         }
3566
3567         return 0;
3568 }
3569
3570 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3571                                  int attr)
3572 {
3573         struct nlattr *rate;
3574         u32 bitrate;
3575         u16 bitrate_compat;
3576
3577         rate = nla_nest_start(msg, attr);
3578         if (!rate)
3579                 return false;
3580
3581         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3582         bitrate = cfg80211_calculate_bitrate(info);
3583         /* report 16-bit bitrate only if we can */
3584         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3585         if (bitrate > 0 &&
3586             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3587                 return false;
3588         if (bitrate_compat > 0 &&
3589             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3590                 return false;
3591
3592         if (info->flags & RATE_INFO_FLAGS_MCS) {
3593                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3594                         return false;
3595                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3596                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3597                         return false;
3598                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3599                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3600                         return false;
3601         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3602                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3603                         return false;
3604                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3605                         return false;
3606                 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH &&
3607                     nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH))
3608                         return false;
3609                 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH &&
3610                     nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH))
3611                         return false;
3612                 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH &&
3613                     nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH))
3614                         return false;
3615                 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH &&
3616                     nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH))
3617                         return false;
3618                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3619                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3620                         return false;
3621         }
3622
3623         nla_nest_end(msg, rate);
3624         return true;
3625 }
3626
3627 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3628                                int id)
3629 {
3630         void *attr;
3631         int i = 0;
3632
3633         if (!mask)
3634                 return true;
3635
3636         attr = nla_nest_start(msg, id);
3637         if (!attr)
3638                 return false;
3639
3640         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3641                 if (!(mask & BIT(i)))
3642                         continue;
3643
3644                 if (nla_put_u8(msg, i, signal[i]))
3645                         return false;
3646         }
3647
3648         nla_nest_end(msg, attr);
3649
3650         return true;
3651 }
3652
3653 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3654                                 u32 seq, int flags,
3655                                 struct cfg80211_registered_device *rdev,
3656                                 struct net_device *dev,
3657                                 const u8 *mac_addr, struct station_info *sinfo)
3658 {
3659         void *hdr;
3660         struct nlattr *sinfoattr, *bss_param;
3661
3662         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3663         if (!hdr)
3664                 return -1;
3665
3666         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3667             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3668             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3669                 goto nla_put_failure;
3670
3671         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3672         if (!sinfoattr)
3673                 goto nla_put_failure;
3674
3675 #define PUT_SINFO(attr, memb, type) do {                                \
3676         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3677             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3678                              sinfo->memb))                              \
3679                 goto nla_put_failure;                                   \
3680         } while (0)
3681
3682         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3683         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3684
3685         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3686                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3687             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3688                         (u32)sinfo->rx_bytes))
3689                 goto nla_put_failure;
3690
3691         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3692                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3693             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3694                         (u32)sinfo->tx_bytes))
3695                 goto nla_put_failure;
3696
3697         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3698         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3699         PUT_SINFO(LLID, llid, u16);
3700         PUT_SINFO(PLID, plid, u16);
3701         PUT_SINFO(PLINK_STATE, plink_state, u8);
3702
3703         switch (rdev->wiphy.signal_type) {
3704         case CFG80211_SIGNAL_TYPE_MBM:
3705                 PUT_SINFO(SIGNAL, signal, u8);
3706                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3707                 break;
3708         default:
3709                 break;
3710         }
3711         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3712                 if (!nl80211_put_signal(msg, sinfo->chains,
3713                                         sinfo->chain_signal,
3714                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3715                         goto nla_put_failure;
3716         }
3717         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3718                 if (!nl80211_put_signal(msg, sinfo->chains,
3719                                         sinfo->chain_signal_avg,
3720                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3721                         goto nla_put_failure;
3722         }
3723         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3724                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3725                                           NL80211_STA_INFO_TX_BITRATE))
3726                         goto nla_put_failure;
3727         }
3728         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3729                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3730                                           NL80211_STA_INFO_RX_BITRATE))
3731                         goto nla_put_failure;
3732         }
3733
3734         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3735         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3736         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3737         PUT_SINFO(TX_FAILED, tx_failed, u32);
3738         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3739         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3740         PUT_SINFO(LOCAL_PM, local_pm, u32);
3741         PUT_SINFO(PEER_PM, peer_pm, u32);
3742         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3743
3744         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3745                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3746                 if (!bss_param)
3747                         goto nla_put_failure;
3748
3749                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3750                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3751                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3752                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3753                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3754                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3755                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3756                                sinfo->bss_param.dtim_period) ||
3757                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3758                                 sinfo->bss_param.beacon_interval))
3759                         goto nla_put_failure;
3760
3761                 nla_nest_end(msg, bss_param);
3762         }
3763         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3764             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3765                     sizeof(struct nl80211_sta_flag_update),
3766                     &sinfo->sta_flags))
3767                 goto nla_put_failure;
3768
3769         PUT_SINFO(T_OFFSET, t_offset, u64);
3770         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3771
3772 #undef PUT_SINFO
3773         nla_nest_end(msg, sinfoattr);
3774
3775         if (sinfo->assoc_req_ies_len &&
3776             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3777                     sinfo->assoc_req_ies))
3778                 goto nla_put_failure;
3779
3780         return genlmsg_end(msg, hdr);
3781
3782  nla_put_failure:
3783         genlmsg_cancel(msg, hdr);
3784         return -EMSGSIZE;
3785 }
3786
3787 static int nl80211_dump_station(struct sk_buff *skb,
3788                                 struct netlink_callback *cb)
3789 {
3790         struct station_info sinfo;
3791         struct cfg80211_registered_device *rdev;
3792         struct wireless_dev *wdev;
3793         u8 mac_addr[ETH_ALEN];
3794         int sta_idx = cb->args[2];
3795         int err;
3796
3797         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3798         if (err)
3799                 return err;
3800
3801         if (!wdev->netdev) {
3802                 err = -EINVAL;
3803                 goto out_err;
3804         }
3805
3806         if (!rdev->ops->dump_station) {
3807                 err = -EOPNOTSUPP;
3808                 goto out_err;
3809         }
3810
3811         while (1) {
3812                 memset(&sinfo, 0, sizeof(sinfo));
3813                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3814                                         mac_addr, &sinfo);
3815                 if (err == -ENOENT)
3816                         break;
3817                 if (err)
3818                         goto out_err;
3819
3820                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3821                                 NETLINK_CB(cb->skb).portid,
3822                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3823                                 rdev, wdev->netdev, mac_addr,
3824                                 &sinfo) < 0)
3825                         goto out;
3826
3827                 sta_idx++;
3828         }
3829
3830
3831  out:
3832         cb->args[2] = sta_idx;
3833         err = skb->len;
3834  out_err:
3835         nl80211_finish_wdev_dump(rdev);
3836
3837         return err;
3838 }
3839
3840 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3841 {
3842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3843         struct net_device *dev = info->user_ptr[1];
3844         struct station_info sinfo;
3845         struct sk_buff *msg;
3846         u8 *mac_addr = NULL;
3847         int err;
3848
3849         memset(&sinfo, 0, sizeof(sinfo));
3850
3851         if (!info->attrs[NL80211_ATTR_MAC])
3852                 return -EINVAL;
3853
3854         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3855
3856         if (!rdev->ops->get_station)
3857                 return -EOPNOTSUPP;
3858
3859         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3860         if (err)
3861                 return err;
3862
3863         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3864         if (!msg)
3865                 return -ENOMEM;
3866
3867         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3868                                  info->snd_portid, info->snd_seq, 0,
3869                                  rdev, dev, mac_addr, &sinfo) < 0) {
3870                 nlmsg_free(msg);
3871                 return -ENOBUFS;
3872         }
3873
3874         return genlmsg_reply(msg, info);
3875 }
3876
3877 int cfg80211_check_station_change(struct wiphy *wiphy,
3878                                   struct station_parameters *params,
3879                                   enum cfg80211_station_type statype)
3880 {
3881         if (params->listen_interval != -1)
3882                 return -EINVAL;
3883         if (params->aid &&
3884             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3885                 return -EINVAL;
3886
3887         /* When you run into this, adjust the code below for the new flag */
3888         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3889
3890         switch (statype) {
3891         case CFG80211_STA_MESH_PEER_KERNEL:
3892         case CFG80211_STA_MESH_PEER_USER:
3893                 /*
3894                  * No ignoring the TDLS flag here -- the userspace mesh
3895                  * code doesn't have the bug of including TDLS in the
3896                  * mask everywhere.
3897                  */
3898                 if (params->sta_flags_mask &
3899                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3900                                   BIT(NL80211_STA_FLAG_MFP) |
3901                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3902                         return -EINVAL;
3903                 break;
3904         case CFG80211_STA_TDLS_PEER_SETUP:
3905         case CFG80211_STA_TDLS_PEER_ACTIVE:
3906                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3907                         return -EINVAL;
3908                 /* ignore since it can't change */
3909                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3910                 break;
3911         default:
3912                 /* disallow mesh-specific things */
3913                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3914                         return -EINVAL;
3915                 if (params->local_pm)
3916                         return -EINVAL;
3917                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3918                         return -EINVAL;
3919         }
3920
3921         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3922             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3923                 /* TDLS can't be set, ... */
3924                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3925                         return -EINVAL;
3926                 /*
3927                  * ... but don't bother the driver with it. This works around
3928                  * a hostapd/wpa_supplicant issue -- it always includes the
3929                  * TLDS_PEER flag in the mask even for AP mode.
3930                  */
3931                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3932         }
3933
3934         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
3935                 /* reject other things that can't change */
3936                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
3937                         return -EINVAL;
3938                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
3939                         return -EINVAL;
3940                 if (params->supported_rates)
3941                         return -EINVAL;
3942                 if (params->ext_capab || params->ht_capa || params->vht_capa)
3943                         return -EINVAL;
3944         }
3945
3946         if (statype != CFG80211_STA_AP_CLIENT) {
3947                 if (params->vlan)
3948                         return -EINVAL;
3949         }
3950
3951         switch (statype) {
3952         case CFG80211_STA_AP_MLME_CLIENT:
3953                 /* Use this only for authorizing/unauthorizing a station */
3954                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
3955                         return -EOPNOTSUPP;
3956                 break;
3957         case CFG80211_STA_AP_CLIENT:
3958                 /* accept only the listed bits */
3959                 if (params->sta_flags_mask &
3960                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3961                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3962                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
3963                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3964                                   BIT(NL80211_STA_FLAG_WME) |
3965                                   BIT(NL80211_STA_FLAG_MFP)))
3966                         return -EINVAL;
3967
3968                 /* but authenticated/associated only if driver handles it */
3969                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
3970                     params->sta_flags_mask &
3971                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3972                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
3973                         return -EINVAL;
3974                 break;
3975         case CFG80211_STA_IBSS:
3976         case CFG80211_STA_AP_STA:
3977                 /* reject any changes other than AUTHORIZED */
3978                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
3979                         return -EINVAL;
3980                 break;
3981         case CFG80211_STA_TDLS_PEER_SETUP:
3982                 /* reject any changes other than AUTHORIZED or WME */
3983                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
3984                                                BIT(NL80211_STA_FLAG_WME)))
3985                         return -EINVAL;
3986                 /* force (at least) rates when authorizing */
3987                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
3988                     !params->supported_rates)
3989                         return -EINVAL;
3990                 break;
3991         case CFG80211_STA_TDLS_PEER_ACTIVE:
3992                 /* reject any changes */
3993                 return -EINVAL;
3994         case CFG80211_STA_MESH_PEER_KERNEL:
3995                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3996                         return -EINVAL;
3997                 break;
3998         case CFG80211_STA_MESH_PEER_USER:
3999                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
4000                         return -EINVAL;
4001                 break;
4002         }
4003
4004         return 0;
4005 }
4006 EXPORT_SYMBOL(cfg80211_check_station_change);
4007
4008 /*
4009  * Get vlan interface making sure it is running and on the right wiphy.
4010  */
4011 static struct net_device *get_vlan(struct genl_info *info,
4012                                    struct cfg80211_registered_device *rdev)
4013 {
4014         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4015         struct net_device *v;
4016         int ret;
4017
4018         if (!vlanattr)
4019                 return NULL;
4020
4021         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4022         if (!v)
4023                 return ERR_PTR(-ENODEV);
4024
4025         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4026                 ret = -EINVAL;
4027                 goto error;
4028         }
4029
4030         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4031             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4032             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4033                 ret = -EINVAL;
4034                 goto error;
4035         }
4036
4037         if (!netif_running(v)) {
4038                 ret = -ENETDOWN;
4039                 goto error;
4040         }
4041
4042         return v;
4043  error:
4044         dev_put(v);
4045         return ERR_PTR(ret);
4046 }
4047
4048 static const struct nla_policy
4049 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4050         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4051         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4052 };
4053
4054 static int nl80211_parse_sta_wme(struct genl_info *info,
4055                                  struct station_parameters *params)
4056 {
4057         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4058         struct nlattr *nla;
4059         int err;
4060
4061         /* parse WME attributes if present */
4062         if (!info->attrs[NL80211_ATTR_STA_WME])
4063                 return 0;
4064
4065         nla = info->attrs[NL80211_ATTR_STA_WME];
4066         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4067                                nl80211_sta_wme_policy);
4068         if (err)
4069                 return err;
4070
4071         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4072                 params->uapsd_queues = nla_get_u8(
4073                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4074         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4075                 return -EINVAL;
4076
4077         if (tb[NL80211_STA_WME_MAX_SP])
4078                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4079
4080         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4081                 return -EINVAL;
4082
4083         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4084
4085         return 0;
4086 }
4087
4088 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4089                                       struct station_parameters *params)
4090 {
4091         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4092                 params->supported_channels =
4093                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4094                 params->supported_channels_len =
4095                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4096                 /*
4097                  * Need to include at least one (first channel, number of
4098                  * channels) tuple for each subband, and must have proper
4099                  * tuples for the rest of the data as well.
4100                  */
4101                 if (params->supported_channels_len < 2)
4102                         return -EINVAL;
4103                 if (params->supported_channels_len % 2)
4104                         return -EINVAL;
4105         }
4106
4107         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4108                 params->supported_oper_classes =
4109                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4110                 params->supported_oper_classes_len =
4111                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4112                 /*
4113                  * The value of the Length field of the Supported Operating
4114                  * Classes element is between 2 and 253.
4115                  */
4116                 if (params->supported_oper_classes_len < 2 ||
4117                     params->supported_oper_classes_len > 253)
4118                         return -EINVAL;
4119         }
4120         return 0;
4121 }
4122
4123 static int nl80211_set_station_tdls(struct genl_info *info,
4124                                     struct station_parameters *params)
4125 {
4126         int err;
4127         /* Dummy STA entry gets updated once the peer capabilities are known */
4128         if (info->attrs[NL80211_ATTR_PEER_AID])
4129                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4130         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4131                 params->ht_capa =
4132                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4133         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4134                 params->vht_capa =
4135                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4136
4137         err = nl80211_parse_sta_channel_info(info, params);
4138         if (err)
4139                 return err;
4140
4141         return nl80211_parse_sta_wme(info, params);
4142 }
4143
4144 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4145 {
4146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4147         struct net_device *dev = info->user_ptr[1];
4148         struct station_parameters params;
4149         u8 *mac_addr;
4150         int err;
4151
4152         memset(&params, 0, sizeof(params));
4153
4154         params.listen_interval = -1;
4155
4156         if (!rdev->ops->change_station)
4157                 return -EOPNOTSUPP;
4158
4159         if (info->attrs[NL80211_ATTR_STA_AID])
4160                 return -EINVAL;
4161
4162         if (!info->attrs[NL80211_ATTR_MAC])
4163                 return -EINVAL;
4164
4165         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4166
4167         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4168                 params.supported_rates =
4169                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4170                 params.supported_rates_len =
4171                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4172         }
4173
4174         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4175                 params.capability =
4176                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4177                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4178         }
4179
4180         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4181                 params.ext_capab =
4182                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4183                 params.ext_capab_len =
4184                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4185         }
4186
4187         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4188                 return -EINVAL;
4189
4190         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4191                 return -EINVAL;
4192
4193         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4194                 params.plink_action =
4195                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4196                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4197                         return -EINVAL;
4198         }
4199
4200         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4201                 params.plink_state =
4202                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4203                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4204                         return -EINVAL;
4205                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4206         }
4207
4208         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4209                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4210                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4211
4212                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4213                     pm > NL80211_MESH_POWER_MAX)
4214                         return -EINVAL;
4215
4216                 params.local_pm = pm;
4217         }
4218
4219         /* Include parameters for TDLS peer (will check later) */
4220         err = nl80211_set_station_tdls(info, &params);
4221         if (err)
4222                 return err;
4223
4224         params.vlan = get_vlan(info, rdev);
4225         if (IS_ERR(params.vlan))
4226                 return PTR_ERR(params.vlan);
4227
4228         switch (dev->ieee80211_ptr->iftype) {
4229         case NL80211_IFTYPE_AP:
4230         case NL80211_IFTYPE_AP_VLAN:
4231         case NL80211_IFTYPE_P2P_GO:
4232         case NL80211_IFTYPE_P2P_CLIENT:
4233         case NL80211_IFTYPE_STATION:
4234         case NL80211_IFTYPE_ADHOC:
4235         case NL80211_IFTYPE_MESH_POINT:
4236                 break;
4237         default:
4238                 err = -EOPNOTSUPP;
4239                 goto out_put_vlan;
4240         }
4241
4242         /* driver will call cfg80211_check_station_change() */
4243         err = rdev_change_station(rdev, dev, mac_addr, &params);
4244
4245  out_put_vlan:
4246         if (params.vlan)
4247                 dev_put(params.vlan);
4248
4249         return err;
4250 }
4251
4252 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4253 {
4254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4255         int err;
4256         struct net_device *dev = info->user_ptr[1];
4257         struct station_parameters params;
4258         u8 *mac_addr = NULL;
4259
4260         memset(&params, 0, sizeof(params));
4261
4262         if (!rdev->ops->add_station)
4263                 return -EOPNOTSUPP;
4264
4265         if (!info->attrs[NL80211_ATTR_MAC])
4266                 return -EINVAL;
4267
4268         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4269                 return -EINVAL;
4270
4271         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4272                 return -EINVAL;
4273
4274         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4275             !info->attrs[NL80211_ATTR_PEER_AID])
4276                 return -EINVAL;
4277
4278         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4279         params.supported_rates =
4280                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4281         params.supported_rates_len =
4282                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4283         params.listen_interval =
4284                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4285
4286         if (info->attrs[NL80211_ATTR_PEER_AID])
4287                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4288         else
4289                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4290         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4291                 return -EINVAL;
4292
4293         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4294                 params.capability =
4295                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4296                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4297         }
4298
4299         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4300                 params.ext_capab =
4301                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4302                 params.ext_capab_len =
4303                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4304         }
4305
4306         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4307                 params.ht_capa =
4308                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4309
4310         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4311                 params.vht_capa =
4312                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4313
4314         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4315                 params.opmode_notif_used = true;
4316                 params.opmode_notif =
4317                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4318         }
4319
4320         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4321                 params.plink_action =
4322                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4323                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4324                         return -EINVAL;
4325         }
4326
4327         err = nl80211_parse_sta_channel_info(info, &params);
4328         if (err)
4329                 return err;
4330
4331         err = nl80211_parse_sta_wme(info, &params);
4332         if (err)
4333                 return err;
4334
4335         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4336                 return -EINVAL;
4337
4338         /* When you run into this, adjust the code below for the new flag */
4339         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4340
4341         switch (dev->ieee80211_ptr->iftype) {
4342         case NL80211_IFTYPE_AP:
4343         case NL80211_IFTYPE_AP_VLAN:
4344         case NL80211_IFTYPE_P2P_GO:
4345                 /* ignore WME attributes if iface/sta is not capable */
4346                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4347                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4348                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4349
4350                 /* TDLS peers cannot be added */
4351                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4352                     info->attrs[NL80211_ATTR_PEER_AID])
4353                         return -EINVAL;
4354                 /* but don't bother the driver with it */
4355                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4356
4357                 /* allow authenticated/associated only if driver handles it */
4358                 if (!(rdev->wiphy.features &
4359                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4360                     params.sta_flags_mask &
4361                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4362                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4363                         return -EINVAL;
4364
4365                 /* must be last in here for error handling */
4366                 params.vlan = get_vlan(info, rdev);
4367                 if (IS_ERR(params.vlan))
4368                         return PTR_ERR(params.vlan);
4369                 break;
4370         case NL80211_IFTYPE_MESH_POINT:
4371                 /* ignore uAPSD data */
4372                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4373
4374                 /* associated is disallowed */
4375                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4376                         return -EINVAL;
4377                 /* TDLS peers cannot be added */
4378                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4379                     info->attrs[NL80211_ATTR_PEER_AID])
4380                         return -EINVAL;
4381                 break;
4382         case NL80211_IFTYPE_STATION:
4383         case NL80211_IFTYPE_P2P_CLIENT:
4384                 /* ignore uAPSD data */
4385                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4386
4387                 /* these are disallowed */
4388                 if (params.sta_flags_mask &
4389                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4390                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4391                         return -EINVAL;
4392                 /* Only TDLS peers can be added */
4393                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4394                         return -EINVAL;
4395                 /* Can only add if TDLS ... */
4396                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4397                         return -EOPNOTSUPP;
4398                 /* ... with external setup is supported */
4399                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4400                         return -EOPNOTSUPP;
4401                 /*
4402                  * Older wpa_supplicant versions always mark the TDLS peer
4403                  * as authorized, but it shouldn't yet be.
4404                  */
4405                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4406                 break;
4407         default:
4408                 return -EOPNOTSUPP;
4409         }
4410
4411         /* be aware of params.vlan when changing code here */
4412
4413         err = rdev_add_station(rdev, dev, mac_addr, &params);
4414
4415         if (params.vlan)
4416                 dev_put(params.vlan);
4417         return err;
4418 }
4419
4420 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4421 {
4422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4423         struct net_device *dev = info->user_ptr[1];
4424         struct station_del_parameters params;
4425
4426         memset(&params, 0, sizeof(params));
4427
4428         if (info->attrs[NL80211_ATTR_MAC])
4429                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4430
4431         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4432             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4433             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4434             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4435                 return -EINVAL;
4436
4437         if (!rdev->ops->del_station)
4438                 return -EOPNOTSUPP;
4439
4440         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4441                 params.subtype =
4442                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4443                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4444                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4445                         return -EINVAL;
4446         } else {
4447                 /* Default to Deauthentication frame */
4448                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4449         }
4450
4451         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4452                 params.reason_code =
4453                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4454                 if (params.reason_code == 0)
4455                         return -EINVAL; /* 0 is reserved */
4456         } else {
4457                 /* Default to reason code 2 */
4458                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4459         }
4460
4461         return rdev_del_station(rdev, dev, &params);
4462 }
4463
4464 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4465                                 int flags, struct net_device *dev,
4466                                 u8 *dst, u8 *next_hop,
4467                                 struct mpath_info *pinfo)
4468 {
4469         void *hdr;
4470         struct nlattr *pinfoattr;
4471
4472         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4473         if (!hdr)
4474                 return -1;
4475
4476         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4477             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4478             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4479             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4480                 goto nla_put_failure;
4481
4482         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4483         if (!pinfoattr)
4484                 goto nla_put_failure;
4485         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4486             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4487                         pinfo->frame_qlen))
4488                 goto nla_put_failure;
4489         if (((pinfo->filled & MPATH_INFO_SN) &&
4490              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4491             ((pinfo->filled & MPATH_INFO_METRIC) &&
4492              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4493                          pinfo->metric)) ||
4494             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4495              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4496                          pinfo->exptime)) ||
4497             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4498              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4499                         pinfo->flags)) ||
4500             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4501              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4502                          pinfo->discovery_timeout)) ||
4503             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4504              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4505                         pinfo->discovery_retries)))
4506                 goto nla_put_failure;
4507
4508         nla_nest_end(msg, pinfoattr);
4509
4510         return genlmsg_end(msg, hdr);
4511
4512  nla_put_failure:
4513         genlmsg_cancel(msg, hdr);
4514         return -EMSGSIZE;
4515 }
4516
4517 static int nl80211_dump_mpath(struct sk_buff *skb,
4518                               struct netlink_callback *cb)
4519 {
4520         struct mpath_info pinfo;
4521         struct cfg80211_registered_device *rdev;
4522         struct wireless_dev *wdev;
4523         u8 dst[ETH_ALEN];
4524         u8 next_hop[ETH_ALEN];
4525         int path_idx = cb->args[2];
4526         int err;
4527
4528         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4529         if (err)
4530                 return err;
4531
4532         if (!rdev->ops->dump_mpath) {
4533                 err = -EOPNOTSUPP;
4534                 goto out_err;
4535         }
4536
4537         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4538                 err = -EOPNOTSUPP;
4539                 goto out_err;
4540         }
4541
4542         while (1) {
4543                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4544                                       next_hop, &pinfo);
4545                 if (err == -ENOENT)
4546                         break;
4547                 if (err)
4548                         goto out_err;
4549
4550                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4551                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4552                                        wdev->netdev, dst, next_hop,
4553                                        &pinfo) < 0)
4554                         goto out;
4555
4556                 path_idx++;
4557         }
4558
4559
4560  out:
4561         cb->args[2] = path_idx;
4562         err = skb->len;
4563  out_err:
4564         nl80211_finish_wdev_dump(rdev);
4565         return err;
4566 }
4567
4568 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4569 {
4570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4571         int err;
4572         struct net_device *dev = info->user_ptr[1];
4573         struct mpath_info pinfo;
4574         struct sk_buff *msg;
4575         u8 *dst = NULL;
4576         u8 next_hop[ETH_ALEN];
4577
4578         memset(&pinfo, 0, sizeof(pinfo));
4579
4580         if (!info->attrs[NL80211_ATTR_MAC])
4581                 return -EINVAL;
4582
4583         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4584
4585         if (!rdev->ops->get_mpath)
4586                 return -EOPNOTSUPP;
4587
4588         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4589                 return -EOPNOTSUPP;
4590
4591         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4592         if (err)
4593                 return err;
4594
4595         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4596         if (!msg)
4597                 return -ENOMEM;
4598
4599         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4600                                  dev, dst, next_hop, &pinfo) < 0) {
4601                 nlmsg_free(msg);
4602                 return -ENOBUFS;
4603         }
4604
4605         return genlmsg_reply(msg, info);
4606 }
4607
4608 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4609 {
4610         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4611         struct net_device *dev = info->user_ptr[1];
4612         u8 *dst = NULL;
4613         u8 *next_hop = NULL;
4614
4615         if (!info->attrs[NL80211_ATTR_MAC])
4616                 return -EINVAL;
4617
4618         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4619                 return -EINVAL;
4620
4621         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4622         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4623
4624         if (!rdev->ops->change_mpath)
4625                 return -EOPNOTSUPP;
4626
4627         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4628                 return -EOPNOTSUPP;
4629
4630         return rdev_change_mpath(rdev, dev, dst, next_hop);
4631 }
4632
4633 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4634 {
4635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4636         struct net_device *dev = info->user_ptr[1];
4637         u8 *dst = NULL;
4638         u8 *next_hop = NULL;
4639
4640         if (!info->attrs[NL80211_ATTR_MAC])
4641                 return -EINVAL;
4642
4643         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4644                 return -EINVAL;
4645
4646         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4647         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4648
4649         if (!rdev->ops->add_mpath)
4650                 return -EOPNOTSUPP;
4651
4652         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4653                 return -EOPNOTSUPP;
4654
4655         return rdev_add_mpath(rdev, dev, dst, next_hop);
4656 }
4657
4658 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4659 {
4660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4661         struct net_device *dev = info->user_ptr[1];
4662         u8 *dst = NULL;
4663
4664         if (info->attrs[NL80211_ATTR_MAC])
4665                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4666
4667         if (!rdev->ops->del_mpath)
4668                 return -EOPNOTSUPP;
4669
4670         return rdev_del_mpath(rdev, dev, dst);
4671 }
4672
4673 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4674 {
4675         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4676         int err;
4677         struct net_device *dev = info->user_ptr[1];
4678         struct mpath_info pinfo;
4679         struct sk_buff *msg;
4680         u8 *dst = NULL;
4681         u8 mpp[ETH_ALEN];
4682
4683         memset(&pinfo, 0, sizeof(pinfo));
4684
4685         if (!info->attrs[NL80211_ATTR_MAC])
4686                 return -EINVAL;
4687
4688         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4689
4690         if (!rdev->ops->get_mpp)
4691                 return -EOPNOTSUPP;
4692
4693         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4694                 return -EOPNOTSUPP;
4695
4696         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4697         if (err)
4698                 return err;
4699
4700         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4701         if (!msg)
4702                 return -ENOMEM;
4703
4704         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4705                                dev, dst, mpp, &pinfo) < 0) {
4706                 nlmsg_free(msg);
4707                 return -ENOBUFS;
4708         }
4709
4710         return genlmsg_reply(msg, info);
4711 }
4712
4713 static int nl80211_dump_mpp(struct sk_buff *skb,
4714                             struct netlink_callback *cb)
4715 {
4716         struct mpath_info pinfo;
4717         struct cfg80211_registered_device *rdev;
4718         struct wireless_dev *wdev;
4719         u8 dst[ETH_ALEN];
4720         u8 mpp[ETH_ALEN];
4721         int path_idx = cb->args[2];
4722         int err;
4723
4724         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4725         if (err)
4726                 return err;
4727
4728         if (!rdev->ops->dump_mpp) {
4729                 err = -EOPNOTSUPP;
4730                 goto out_err;
4731         }
4732
4733         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4734                 err = -EOPNOTSUPP;
4735                 goto out_err;
4736         }
4737
4738         while (1) {
4739                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4740                                     mpp, &pinfo);
4741                 if (err == -ENOENT)
4742                         break;
4743                 if (err)
4744                         goto out_err;
4745
4746                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4747                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4748                                        wdev->netdev, dst, mpp,
4749                                        &pinfo) < 0)
4750                         goto out;
4751
4752                 path_idx++;
4753         }
4754
4755  out:
4756         cb->args[2] = path_idx;
4757         err = skb->len;
4758  out_err:
4759         nl80211_finish_wdev_dump(rdev);
4760         return err;
4761 }
4762
4763 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4764 {
4765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4766         struct net_device *dev = info->user_ptr[1];
4767         struct wireless_dev *wdev = dev->ieee80211_ptr;
4768         struct bss_parameters params;
4769         int err;
4770
4771         memset(&params, 0, sizeof(params));
4772         /* default to not changing parameters */
4773         params.use_cts_prot = -1;
4774         params.use_short_preamble = -1;
4775         params.use_short_slot_time = -1;
4776         params.ap_isolate = -1;
4777         params.ht_opmode = -1;
4778         params.p2p_ctwindow = -1;
4779         params.p2p_opp_ps = -1;
4780
4781         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4782                 params.use_cts_prot =
4783                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4784         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4785                 params.use_short_preamble =
4786                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4787         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4788                 params.use_short_slot_time =
4789                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4790         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4791                 params.basic_rates =
4792                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4793                 params.basic_rates_len =
4794                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4795         }
4796         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4797                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4798         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4799                 params.ht_opmode =
4800                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4801
4802         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4803                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4804                         return -EINVAL;
4805                 params.p2p_ctwindow =
4806                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4807                 if (params.p2p_ctwindow < 0)
4808                         return -EINVAL;
4809                 if (params.p2p_ctwindow != 0 &&
4810                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4811                         return -EINVAL;
4812         }
4813
4814         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4815                 u8 tmp;
4816
4817                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4818                         return -EINVAL;
4819                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4820                 if (tmp > 1)
4821                         return -EINVAL;
4822                 params.p2p_opp_ps = tmp;
4823                 if (params.p2p_opp_ps &&
4824                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4825                         return -EINVAL;
4826         }
4827
4828         if (!rdev->ops->change_bss)
4829                 return -EOPNOTSUPP;
4830
4831         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4832             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4833                 return -EOPNOTSUPP;
4834
4835         wdev_lock(wdev);
4836         err = rdev_change_bss(rdev, dev, &params);
4837         wdev_unlock(wdev);
4838
4839         return err;
4840 }
4841
4842 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4843         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4844         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4845         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4846         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4847         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4848         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4849         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4850 };
4851
4852 static int parse_reg_rule(struct nlattr *tb[],
4853         struct ieee80211_reg_rule *reg_rule)
4854 {
4855         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4856         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4857
4858         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4859                 return -EINVAL;
4860         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4861                 return -EINVAL;
4862         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4863                 return -EINVAL;
4864         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4865                 return -EINVAL;
4866         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4867                 return -EINVAL;
4868
4869         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4870
4871         freq_range->start_freq_khz =
4872                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4873         freq_range->end_freq_khz =
4874                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4875         freq_range->max_bandwidth_khz =
4876                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4877
4878         power_rule->max_eirp =
4879                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4880
4881         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4882                 power_rule->max_antenna_gain =
4883                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4884
4885         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4886                 reg_rule->dfs_cac_ms =
4887                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4888
4889         return 0;
4890 }
4891
4892 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4893 {
4894         char *data = NULL;
4895         enum nl80211_user_reg_hint_type user_reg_hint_type;
4896
4897         /*
4898          * You should only get this when cfg80211 hasn't yet initialized
4899          * completely when built-in to the kernel right between the time
4900          * window between nl80211_init() and regulatory_init(), if that is
4901          * even possible.
4902          */
4903         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4904                 return -EINPROGRESS;
4905
4906         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4907                 user_reg_hint_type =
4908                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4909         else
4910                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4911
4912         switch (user_reg_hint_type) {
4913         case NL80211_USER_REG_HINT_USER:
4914         case NL80211_USER_REG_HINT_CELL_BASE:
4915                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4916                         return -EINVAL;
4917
4918                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4919                 return regulatory_hint_user(data, user_reg_hint_type);
4920         case NL80211_USER_REG_HINT_INDOOR:
4921                 return regulatory_hint_indoor_user();
4922         default:
4923                 return -EINVAL;
4924         }
4925 }
4926
4927 static int nl80211_get_mesh_config(struct sk_buff *skb,
4928                                    struct genl_info *info)
4929 {
4930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4931         struct net_device *dev = info->user_ptr[1];
4932         struct wireless_dev *wdev = dev->ieee80211_ptr;
4933         struct mesh_config cur_params;
4934         int err = 0;
4935         void *hdr;
4936         struct nlattr *pinfoattr;
4937         struct sk_buff *msg;
4938
4939         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
4940                 return -EOPNOTSUPP;
4941
4942         if (!rdev->ops->get_mesh_config)
4943                 return -EOPNOTSUPP;
4944
4945         wdev_lock(wdev);
4946         /* If not connected, get default parameters */
4947         if (!wdev->mesh_id_len)
4948                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
4949         else
4950                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
4951         wdev_unlock(wdev);
4952
4953         if (err)
4954                 return err;
4955
4956         /* Draw up a netlink message to send back */
4957         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4958         if (!msg)
4959                 return -ENOMEM;
4960         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4961                              NL80211_CMD_GET_MESH_CONFIG);
4962         if (!hdr)
4963                 goto out;
4964         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
4965         if (!pinfoattr)
4966                 goto nla_put_failure;
4967         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4968             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
4969                         cur_params.dot11MeshRetryTimeout) ||
4970             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
4971                         cur_params.dot11MeshConfirmTimeout) ||
4972             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
4973                         cur_params.dot11MeshHoldingTimeout) ||
4974             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
4975                         cur_params.dot11MeshMaxPeerLinks) ||
4976             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
4977                        cur_params.dot11MeshMaxRetries) ||
4978             nla_put_u8(msg, NL80211_MESHCONF_TTL,
4979                        cur_params.dot11MeshTTL) ||
4980             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
4981                        cur_params.element_ttl) ||
4982             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
4983                        cur_params.auto_open_plinks) ||
4984             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
4985                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
4986             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
4987                        cur_params.dot11MeshHWMPmaxPREQretries) ||
4988             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
4989                         cur_params.path_refresh_time) ||
4990             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
4991                         cur_params.min_discovery_timeout) ||
4992             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
4993                         cur_params.dot11MeshHWMPactivePathTimeout) ||
4994             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
4995                         cur_params.dot11MeshHWMPpreqMinInterval) ||
4996             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
4997                         cur_params.dot11MeshHWMPperrMinInterval) ||
4998             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
4999                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5000             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5001                        cur_params.dot11MeshHWMPRootMode) ||
5002             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5003                         cur_params.dot11MeshHWMPRannInterval) ||
5004             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5005                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5006             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5007                        cur_params.dot11MeshForwarding) ||
5008             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5009                         cur_params.rssi_threshold) ||
5010             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5011                         cur_params.ht_opmode) ||
5012             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5013                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5014             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5015                         cur_params.dot11MeshHWMProotInterval) ||
5016             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5017                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5018             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5019                         cur_params.power_mode) ||
5020             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5021                         cur_params.dot11MeshAwakeWindowDuration) ||
5022             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5023                         cur_params.plink_timeout))
5024                 goto nla_put_failure;
5025         nla_nest_end(msg, pinfoattr);
5026         genlmsg_end(msg, hdr);
5027         return genlmsg_reply(msg, info);
5028
5029  nla_put_failure:
5030         genlmsg_cancel(msg, hdr);
5031  out:
5032         nlmsg_free(msg);
5033         return -ENOBUFS;
5034 }
5035
5036 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5037         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5038         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5039         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5040         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5041         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5042         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5043         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5044         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5045         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5046         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5047         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5048         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5049         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5050         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5051         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5052         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5053         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5054         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5055         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5056         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5057         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5058         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5059         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5060         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5061         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5062         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5063         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5064         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5065 };
5066
5067 static const struct nla_policy
5068         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5069         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5070         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5071         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5072         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5073         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5074         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5075         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5076                                     .len = IEEE80211_MAX_DATA_LEN },
5077         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5078 };
5079
5080 static int nl80211_parse_mesh_config(struct genl_info *info,
5081                                      struct mesh_config *cfg,
5082                                      u32 *mask_out)
5083 {
5084         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5085         u32 mask = 0;
5086
5087 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5088 do {                                                                        \
5089         if (tb[attr]) {                                                     \
5090                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5091                         return -EINVAL;                                     \
5092                 cfg->param = fn(tb[attr]);                                  \
5093                 mask |= (1 << (attr - 1));                                  \
5094         }                                                                   \
5095 } while (0)
5096
5097
5098         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5099                 return -EINVAL;
5100         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5101                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5102                              nl80211_meshconf_params_policy))
5103                 return -EINVAL;
5104
5105         /* This makes sure that there aren't more than 32 mesh config
5106          * parameters (otherwise our bitfield scheme would not work.) */
5107         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5108
5109         /* Fill in the params struct */
5110         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5111                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5112                                   nla_get_u16);
5113         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5114                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5115                                   nla_get_u16);
5116         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5117                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5118                                   nla_get_u16);
5119         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5120                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5121                                   nla_get_u16);
5122         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5123                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5124                                   nla_get_u8);
5125         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5126                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5127         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5128                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5129                                   nla_get_u8);
5130         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5131                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5132                                   nla_get_u8);
5133         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5134                                   1, 255, mask,
5135                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5136                                   nla_get_u32);
5137         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5138                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5139                                   nla_get_u8);
5140         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5141                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5142                                   nla_get_u32);
5143         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5144                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5145                                   nla_get_u16);
5146         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5147                                   1, 65535, mask,
5148                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5149                                   nla_get_u32);
5150         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5151                                   1, 65535, mask,
5152                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5153                                   nla_get_u16);
5154         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5155                                   1, 65535, mask,
5156                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5157                                   nla_get_u16);
5158         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5159                                   dot11MeshHWMPnetDiameterTraversalTime,
5160                                   1, 65535, mask,
5161                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5162                                   nla_get_u16);
5163         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5164                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5165                                   nla_get_u8);
5166         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5167                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5168                                   nla_get_u16);
5169         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5170                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5171                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5172                                   nla_get_u8);
5173         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5174                                   mask, NL80211_MESHCONF_FORWARDING,
5175                                   nla_get_u8);
5176         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5177                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5178                                   nla_get_s32);
5179         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5180                                   mask, NL80211_MESHCONF_HT_OPMODE,
5181                                   nla_get_u16);
5182         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5183                                   1, 65535, mask,
5184                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5185                                   nla_get_u32);
5186         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5187                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5188                                   nla_get_u16);
5189         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5190                                   dot11MeshHWMPconfirmationInterval,
5191                                   1, 65535, mask,
5192                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5193                                   nla_get_u16);
5194         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5195                                   NL80211_MESH_POWER_ACTIVE,
5196                                   NL80211_MESH_POWER_MAX,
5197                                   mask, NL80211_MESHCONF_POWER_MODE,
5198                                   nla_get_u32);
5199         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5200                                   0, 65535, mask,
5201                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5202         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff,
5203                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5204                                   nla_get_u32);
5205         if (mask_out)
5206                 *mask_out = mask;
5207
5208         return 0;
5209
5210 #undef FILL_IN_MESH_PARAM_IF_SET
5211 }
5212
5213 static int nl80211_parse_mesh_setup(struct genl_info *info,
5214                                      struct mesh_setup *setup)
5215 {
5216         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5217         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5218
5219         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5220                 return -EINVAL;
5221         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5222                              info->attrs[NL80211_ATTR_MESH_SETUP],
5223                              nl80211_mesh_setup_params_policy))
5224                 return -EINVAL;
5225
5226         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5227                 setup->sync_method =
5228                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5229                  IEEE80211_SYNC_METHOD_VENDOR :
5230                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5231
5232         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5233                 setup->path_sel_proto =
5234                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5235                  IEEE80211_PATH_PROTOCOL_VENDOR :
5236                  IEEE80211_PATH_PROTOCOL_HWMP;
5237
5238         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5239                 setup->path_metric =
5240                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5241                  IEEE80211_PATH_METRIC_VENDOR :
5242                  IEEE80211_PATH_METRIC_AIRTIME;
5243
5244
5245         if (tb[NL80211_MESH_SETUP_IE]) {
5246                 struct nlattr *ieattr =
5247                         tb[NL80211_MESH_SETUP_IE];
5248                 if (!is_valid_ie_attr(ieattr))
5249                         return -EINVAL;
5250                 setup->ie = nla_data(ieattr);
5251                 setup->ie_len = nla_len(ieattr);
5252         }
5253         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5254             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5255                 return -EINVAL;
5256         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5257         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5258         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5259         if (setup->is_secure)
5260                 setup->user_mpm = true;
5261
5262         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5263                 if (!setup->user_mpm)
5264                         return -EINVAL;
5265                 setup->auth_id =
5266                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5267         }
5268
5269         return 0;
5270 }
5271
5272 static int nl80211_update_mesh_config(struct sk_buff *skb,
5273                                       struct genl_info *info)
5274 {
5275         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5276         struct net_device *dev = info->user_ptr[1];
5277         struct wireless_dev *wdev = dev->ieee80211_ptr;
5278         struct mesh_config cfg;
5279         u32 mask;
5280         int err;
5281
5282         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5283                 return -EOPNOTSUPP;
5284
5285         if (!rdev->ops->update_mesh_config)
5286                 return -EOPNOTSUPP;
5287
5288         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5289         if (err)
5290                 return err;
5291
5292         wdev_lock(wdev);
5293         if (!wdev->mesh_id_len)
5294                 err = -ENOLINK;
5295
5296         if (!err)
5297                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5298
5299         wdev_unlock(wdev);
5300
5301         return err;
5302 }
5303
5304 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5305                               struct sk_buff *msg)
5306 {
5307         struct nlattr *nl_reg_rules;
5308         unsigned int i;
5309
5310         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5311             (regdom->dfs_region &&
5312              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5313                 goto nla_put_failure;
5314
5315         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5316         if (!nl_reg_rules)
5317                 goto nla_put_failure;
5318
5319         for (i = 0; i < regdom->n_reg_rules; i++) {
5320                 struct nlattr *nl_reg_rule;
5321                 const struct ieee80211_reg_rule *reg_rule;
5322                 const struct ieee80211_freq_range *freq_range;
5323                 const struct ieee80211_power_rule *power_rule;
5324                 unsigned int max_bandwidth_khz;
5325
5326                 reg_rule = &regdom->reg_rules[i];
5327                 freq_range = &reg_rule->freq_range;
5328                 power_rule = &reg_rule->power_rule;
5329
5330                 nl_reg_rule = nla_nest_start(msg, i);
5331                 if (!nl_reg_rule)
5332                         goto nla_put_failure;
5333
5334                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5335                 if (!max_bandwidth_khz)
5336                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5337                                                                   reg_rule);
5338
5339                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5340                                 reg_rule->flags) ||
5341                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5342                                 freq_range->start_freq_khz) ||
5343                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5344                                 freq_range->end_freq_khz) ||
5345                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5346                                 max_bandwidth_khz) ||
5347                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5348                                 power_rule->max_antenna_gain) ||
5349                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5350                                 power_rule->max_eirp) ||
5351                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5352                                 reg_rule->dfs_cac_ms))
5353                         goto nla_put_failure;
5354
5355                 nla_nest_end(msg, nl_reg_rule);
5356         }
5357
5358         nla_nest_end(msg, nl_reg_rules);
5359         return 0;
5360
5361 nla_put_failure:
5362         return -EMSGSIZE;
5363 }
5364
5365 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5366 {
5367         const struct ieee80211_regdomain *regdom = NULL;
5368         struct cfg80211_registered_device *rdev;
5369         struct wiphy *wiphy = NULL;
5370         struct sk_buff *msg;
5371         void *hdr;
5372
5373         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5374         if (!msg)
5375                 return -ENOBUFS;
5376
5377         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5378                              NL80211_CMD_GET_REG);
5379         if (!hdr)
5380                 goto put_failure;
5381
5382         if (info->attrs[NL80211_ATTR_WIPHY]) {
5383                 bool self_managed;
5384
5385                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5386                 if (IS_ERR(rdev)) {
5387                         nlmsg_free(msg);
5388                         return PTR_ERR(rdev);
5389                 }
5390
5391                 wiphy = &rdev->wiphy;
5392                 self_managed = wiphy->regulatory_flags &
5393                                REGULATORY_WIPHY_SELF_MANAGED;
5394                 regdom = get_wiphy_regdom(wiphy);
5395
5396                 /* a self-managed-reg device must have a private regdom */
5397                 if (WARN_ON(!regdom && self_managed)) {
5398                         nlmsg_free(msg);
5399                         return -EINVAL;
5400                 }
5401
5402                 if (regdom &&
5403                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5404                         goto nla_put_failure;
5405         }
5406
5407         if (!wiphy && reg_last_request_cell_base() &&
5408             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5409                         NL80211_USER_REG_HINT_CELL_BASE))
5410                 goto nla_put_failure;
5411
5412         rcu_read_lock();
5413
5414         if (!regdom)
5415                 regdom = rcu_dereference(cfg80211_regdomain);
5416
5417         if (nl80211_put_regdom(regdom, msg))
5418                 goto nla_put_failure_rcu;
5419
5420         rcu_read_unlock();
5421
5422         genlmsg_end(msg, hdr);
5423         return genlmsg_reply(msg, info);
5424
5425 nla_put_failure_rcu:
5426         rcu_read_unlock();
5427 nla_put_failure:
5428         genlmsg_cancel(msg, hdr);
5429 put_failure:
5430         nlmsg_free(msg);
5431         return -EMSGSIZE;
5432 }
5433
5434 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5435                                u32 seq, int flags, struct wiphy *wiphy,
5436                                const struct ieee80211_regdomain *regdom)
5437 {
5438         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5439                                    NL80211_CMD_GET_REG);
5440
5441         if (!hdr)
5442                 return -1;
5443
5444         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5445
5446         if (nl80211_put_regdom(regdom, msg))
5447                 goto nla_put_failure;
5448
5449         if (!wiphy && reg_last_request_cell_base() &&
5450             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5451                         NL80211_USER_REG_HINT_CELL_BASE))
5452                 goto nla_put_failure;
5453
5454         if (wiphy &&
5455             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5456                 goto nla_put_failure;
5457
5458         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5459             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5460                 goto nla_put_failure;
5461
5462         return genlmsg_end(msg, hdr);
5463
5464 nla_put_failure:
5465         genlmsg_cancel(msg, hdr);
5466         return -EMSGSIZE;
5467 }
5468
5469 static int nl80211_get_reg_dump(struct sk_buff *skb,
5470                                 struct netlink_callback *cb)
5471 {
5472         const struct ieee80211_regdomain *regdom = NULL;
5473         struct cfg80211_registered_device *rdev;
5474         int err, reg_idx, start = cb->args[2];
5475
5476         rtnl_lock();
5477
5478         if (cfg80211_regdomain && start == 0) {
5479                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5480                                           NLM_F_MULTI, NULL,
5481                                           rtnl_dereference(cfg80211_regdomain));
5482                 if (err < 0)
5483                         goto out_err;
5484         }
5485
5486         /* the global regdom is idx 0 */
5487         reg_idx = 1;
5488         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5489                 regdom = get_wiphy_regdom(&rdev->wiphy);
5490                 if (!regdom)
5491                         continue;
5492
5493                 if (++reg_idx <= start)
5494                         continue;
5495
5496                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5497                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5498                 if (err < 0) {
5499                         reg_idx--;
5500                         break;
5501                 }
5502         }
5503
5504         cb->args[2] = reg_idx;
5505         err = skb->len;
5506 out_err:
5507         rtnl_unlock();
5508         return err;
5509 }
5510
5511 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5512 {
5513         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5514         struct nlattr *nl_reg_rule;
5515         char *alpha2;
5516         int rem_reg_rules, r;
5517         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5518         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5519         struct ieee80211_regdomain *rd;
5520
5521         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5522                 return -EINVAL;
5523
5524         if (!info->attrs[NL80211_ATTR_REG_RULES])
5525                 return -EINVAL;
5526
5527         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5528
5529         if (info->attrs[NL80211_ATTR_DFS_REGION])
5530                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5531
5532         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5533                             rem_reg_rules) {
5534                 num_rules++;
5535                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5536                         return -EINVAL;
5537         }
5538
5539         if (!reg_is_valid_request(alpha2))
5540                 return -EINVAL;
5541
5542         size_of_regd = sizeof(struct ieee80211_regdomain) +
5543                        num_rules * sizeof(struct ieee80211_reg_rule);
5544
5545         rd = kzalloc(size_of_regd, GFP_KERNEL);
5546         if (!rd)
5547                 return -ENOMEM;
5548
5549         rd->n_reg_rules = num_rules;
5550         rd->alpha2[0] = alpha2[0];
5551         rd->alpha2[1] = alpha2[1];
5552
5553         /*
5554          * Disable DFS master mode if the DFS region was
5555          * not supported or known on this kernel.
5556          */
5557         if (reg_supported_dfs_region(dfs_region))
5558                 rd->dfs_region = dfs_region;
5559
5560         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5561                             rem_reg_rules) {
5562                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5563                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5564                               reg_rule_policy);
5565                 if (r)
5566                         goto bad_reg;
5567                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5568                 if (r)
5569                         goto bad_reg;
5570
5571                 rule_idx++;
5572
5573                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5574                         r = -EINVAL;
5575                         goto bad_reg;
5576                 }
5577         }
5578
5579         r = set_regdom(rd);
5580         /* set_regdom took ownership */
5581         rd = NULL;
5582
5583  bad_reg:
5584         kfree(rd);
5585         return r;
5586 }
5587
5588 static int validate_scan_freqs(struct nlattr *freqs)
5589 {
5590         struct nlattr *attr1, *attr2;
5591         int n_channels = 0, tmp1, tmp2;
5592
5593         nla_for_each_nested(attr1, freqs, tmp1) {
5594                 n_channels++;
5595                 /*
5596                  * Some hardware has a limited channel list for
5597                  * scanning, and it is pretty much nonsensical
5598                  * to scan for a channel twice, so disallow that
5599                  * and don't require drivers to check that the
5600                  * channel list they get isn't longer than what
5601                  * they can scan, as long as they can scan all
5602                  * the channels they registered at once.
5603                  */
5604                 nla_for_each_nested(attr2, freqs, tmp2)
5605                         if (attr1 != attr2 &&
5606                             nla_get_u32(attr1) == nla_get_u32(attr2))
5607                                 return 0;
5608         }
5609
5610         return n_channels;
5611 }
5612
5613 static int nl80211_parse_random_mac(struct nlattr **attrs,
5614                                     u8 *mac_addr, u8 *mac_addr_mask)
5615 {
5616         int i;
5617
5618         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5619                 memset(mac_addr, 0, ETH_ALEN);
5620                 memset(mac_addr_mask, 0, ETH_ALEN);
5621                 mac_addr[0] = 0x2;
5622                 mac_addr_mask[0] = 0x3;
5623
5624                 return 0;
5625         }
5626
5627         /* need both or none */
5628         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5629                 return -EINVAL;
5630
5631         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5632         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5633
5634         /* don't allow or configure an mcast address */
5635         if (!is_multicast_ether_addr(mac_addr_mask) ||
5636             is_multicast_ether_addr(mac_addr))
5637                 return -EINVAL;
5638
5639         /*
5640          * allow users to pass a MAC address that has bits set outside
5641          * of the mask, but don't bother drivers with having to deal
5642          * with such bits
5643          */
5644         for (i = 0; i < ETH_ALEN; i++)
5645                 mac_addr[i] &= mac_addr_mask[i];
5646
5647         return 0;
5648 }
5649
5650 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5651 {
5652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5653         struct wireless_dev *wdev = info->user_ptr[1];
5654         struct cfg80211_scan_request *request;
5655         struct nlattr *attr;
5656         struct wiphy *wiphy;
5657         int err, tmp, n_ssids = 0, n_channels, i;
5658         size_t ie_len;
5659
5660         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5661                 return -EINVAL;
5662
5663         wiphy = &rdev->wiphy;
5664
5665         if (!rdev->ops->scan)
5666                 return -EOPNOTSUPP;
5667
5668         if (rdev->scan_req || rdev->scan_msg) {
5669                 err = -EBUSY;
5670                 goto unlock;
5671         }
5672
5673         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5674                 n_channels = validate_scan_freqs(
5675                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5676                 if (!n_channels) {
5677                         err = -EINVAL;
5678                         goto unlock;
5679                 }
5680         } else {
5681                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5682         }
5683
5684         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5685                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5686                         n_ssids++;
5687
5688         if (n_ssids > wiphy->max_scan_ssids) {
5689                 err = -EINVAL;
5690                 goto unlock;
5691         }
5692
5693         if (info->attrs[NL80211_ATTR_IE])
5694                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5695         else
5696                 ie_len = 0;
5697
5698         if (ie_len > wiphy->max_scan_ie_len) {
5699                 err = -EINVAL;
5700                 goto unlock;
5701         }
5702
5703         request = kzalloc(sizeof(*request)
5704                         + sizeof(*request->ssids) * n_ssids
5705                         + sizeof(*request->channels) * n_channels
5706                         + ie_len, GFP_KERNEL);
5707         if (!request) {
5708                 err = -ENOMEM;
5709                 goto unlock;
5710         }
5711
5712         if (n_ssids)
5713                 request->ssids = (void *)&request->channels[n_channels];
5714         request->n_ssids = n_ssids;
5715         if (ie_len) {
5716                 if (request->ssids)
5717                         request->ie = (void *)(request->ssids + n_ssids);
5718                 else
5719                         request->ie = (void *)(request->channels + n_channels);
5720         }
5721
5722         i = 0;
5723         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5724                 /* user specified, bail out if channel not found */
5725                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5726                         struct ieee80211_channel *chan;
5727
5728                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5729
5730                         if (!chan) {
5731                                 err = -EINVAL;
5732                                 goto out_free;
5733                         }
5734
5735                         /* ignore disabled channels */
5736                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5737                                 continue;
5738
5739                         request->channels[i] = chan;
5740                         i++;
5741                 }
5742         } else {
5743                 enum ieee80211_band band;
5744
5745                 /* all channels */
5746                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5747                         int j;
5748                         if (!wiphy->bands[band])
5749                                 continue;
5750                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5751                                 struct ieee80211_channel *chan;
5752
5753                                 chan = &wiphy->bands[band]->channels[j];
5754
5755                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5756                                         continue;
5757
5758                                 request->channels[i] = chan;
5759                                 i++;
5760                         }
5761                 }
5762         }
5763
5764         if (!i) {
5765                 err = -EINVAL;
5766                 goto out_free;
5767         }
5768
5769         request->n_channels = i;
5770
5771         i = 0;
5772         if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
5773                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5774                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5775                                 err = -EINVAL;
5776                                 goto out_free;
5777                         }
5778                         request->ssids[i].ssid_len = nla_len(attr);
5779                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5780                         i++;
5781                 }
5782         }
5783
5784         if (info->attrs[NL80211_ATTR_IE]) {
5785                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5786                 memcpy((void *)request->ie,
5787                        nla_data(info->attrs[NL80211_ATTR_IE]),
5788                        request->ie_len);
5789         }
5790
5791         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5792                 if (wiphy->bands[i])
5793                         request->rates[i] =
5794                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5795
5796         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5797                 nla_for_each_nested(attr,
5798                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5799                                     tmp) {
5800                         enum ieee80211_band band = nla_type(attr);
5801
5802                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5803                                 err = -EINVAL;
5804                                 goto out_free;
5805                         }
5806
5807                         if (!wiphy->bands[band])
5808                                 continue;
5809
5810                         err = ieee80211_get_ratemask(wiphy->bands[band],
5811                                                      nla_data(attr),
5812                                                      nla_len(attr),
5813                                                      &request->rates[band]);
5814                         if (err)
5815                                 goto out_free;
5816                 }
5817         }
5818
5819         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5820                 request->flags = nla_get_u32(
5821                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5822                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5823                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5824                         err = -EOPNOTSUPP;
5825                         goto out_free;
5826                 }
5827
5828                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5829                         if (!(wiphy->features &
5830                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5831                                 err = -EOPNOTSUPP;
5832                                 goto out_free;
5833                         }
5834
5835                         if (wdev->current_bss) {
5836                                 err = -EOPNOTSUPP;
5837                                 goto out_free;
5838                         }
5839
5840                         err = nl80211_parse_random_mac(info->attrs,
5841                                                        request->mac_addr,
5842                                                        request->mac_addr_mask);
5843                         if (err)
5844                                 goto out_free;
5845                 }
5846         }
5847
5848         request->no_cck =
5849                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5850
5851         request->wdev = wdev;
5852         request->wiphy = &rdev->wiphy;
5853         request->scan_start = jiffies;
5854
5855         rdev->scan_req = request;
5856         err = rdev_scan(rdev, request);
5857
5858         if (!err) {
5859                 nl80211_send_scan_start(rdev, wdev);
5860                 if (wdev->netdev)
5861                         dev_hold(wdev->netdev);
5862         } else {
5863  out_free:
5864                 rdev->scan_req = NULL;
5865                 kfree(request);
5866         }
5867
5868  unlock:
5869         return err;
5870 }
5871
5872 static struct cfg80211_sched_scan_request *
5873 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5874                          struct nlattr **attrs)
5875 {
5876         struct cfg80211_sched_scan_request *request;
5877         struct nlattr *attr;
5878         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5879         u32 interval;
5880         enum ieee80211_band band;
5881         size_t ie_len;
5882         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5883         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5884
5885         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5886                 return ERR_PTR(-EINVAL);
5887
5888         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5889                 return ERR_PTR(-EINVAL);
5890
5891         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5892         if (interval == 0)
5893                 return ERR_PTR(-EINVAL);
5894
5895         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5896                 n_channels = validate_scan_freqs(
5897                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5898                 if (!n_channels)
5899                         return ERR_PTR(-EINVAL);
5900         } else {
5901                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5902         }
5903
5904         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5905                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5906                                     tmp)
5907                         n_ssids++;
5908
5909         if (n_ssids > wiphy->max_sched_scan_ssids)
5910                 return ERR_PTR(-EINVAL);
5911
5912         /*
5913          * First, count the number of 'real' matchsets. Due to an issue with
5914          * the old implementation, matchsets containing only the RSSI attribute
5915          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
5916          * RSSI for all matchsets, rather than their own matchset for reporting
5917          * all APs with a strong RSSI. This is needed to be compatible with
5918          * older userspace that treated a matchset with only the RSSI as the
5919          * global RSSI for all other matchsets - if there are other matchsets.
5920          */
5921         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
5922                 nla_for_each_nested(attr,
5923                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
5924                                     tmp) {
5925                         struct nlattr *rssi;
5926
5927                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
5928                                         nla_data(attr), nla_len(attr),
5929                                         nl80211_match_policy);
5930                         if (err)
5931                                 return ERR_PTR(err);
5932                         /* add other standalone attributes here */
5933                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
5934                                 n_match_sets++;
5935                                 continue;
5936                         }
5937                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
5938                         if (rssi)
5939                                 default_match_rssi = nla_get_s32(rssi);
5940                 }
5941         }
5942
5943         /* However, if there's no other matchset, add the RSSI one */
5944         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
5945                 n_match_sets = 1;
5946
5947         if (n_match_sets > wiphy->max_match_sets)
5948                 return ERR_PTR(-EINVAL);
5949
5950         if (attrs[NL80211_ATTR_IE])
5951                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
5952         else
5953                 ie_len = 0;
5954
5955         if (ie_len > wiphy->max_sched_scan_ie_len)
5956                 return ERR_PTR(-EINVAL);
5957
5958         request = kzalloc(sizeof(*request)
5959                         + sizeof(*request->ssids) * n_ssids
5960                         + sizeof(*request->match_sets) * n_match_sets
5961                         + sizeof(*request->channels) * n_channels
5962                         + ie_len, GFP_KERNEL);
5963         if (!request)
5964                 return ERR_PTR(-ENOMEM);
5965
5966         if (n_ssids)
5967                 request->ssids = (void *)&request->channels[n_channels];
5968         request->n_ssids = n_ssids;
5969         if (ie_len) {
5970                 if (request->ssids)
5971                         request->ie = (void *)(request->ssids + n_ssids);
5972                 else
5973                         request->ie = (void *)(request->channels + n_channels);
5974         }
5975
5976         if (n_match_sets) {
5977                 if (request->ie)
5978                         request->match_sets = (void *)(request->ie + ie_len);
5979                 else if (request->ssids)
5980                         request->match_sets =
5981                                 (void *)(request->ssids + n_ssids);
5982                 else
5983                         request->match_sets =
5984                                 (void *)(request->channels + n_channels);
5985         }
5986         request->n_match_sets = n_match_sets;
5987
5988         i = 0;
5989         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5990                 /* user specified, bail out if channel not found */
5991                 nla_for_each_nested(attr,
5992                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
5993                                     tmp) {
5994                         struct ieee80211_channel *chan;
5995
5996                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5997
5998                         if (!chan) {
5999                                 err = -EINVAL;
6000                                 goto out_free;
6001                         }
6002
6003                         /* ignore disabled channels */
6004                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6005                                 continue;
6006
6007                         request->channels[i] = chan;
6008                         i++;
6009                 }
6010         } else {
6011                 /* all channels */
6012                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6013                         int j;
6014                         if (!wiphy->bands[band])
6015                                 continue;
6016                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6017                                 struct ieee80211_channel *chan;
6018
6019                                 chan = &wiphy->bands[band]->channels[j];
6020
6021                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6022                                         continue;
6023
6024                                 request->channels[i] = chan;
6025                                 i++;
6026                         }
6027                 }
6028         }
6029
6030         if (!i) {
6031                 err = -EINVAL;
6032                 goto out_free;
6033         }
6034
6035         request->n_channels = i;
6036
6037         i = 0;
6038         if (attrs[NL80211_ATTR_SCAN_SSIDS]) {
6039                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6040                                     tmp) {
6041                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6042                                 err = -EINVAL;
6043                                 goto out_free;
6044                         }
6045                         request->ssids[i].ssid_len = nla_len(attr);
6046                         memcpy(request->ssids[i].ssid, nla_data(attr),
6047                                nla_len(attr));
6048                         i++;
6049                 }
6050         }
6051
6052         i = 0;
6053         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6054                 nla_for_each_nested(attr,
6055                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6056                                     tmp) {
6057                         struct nlattr *ssid, *rssi;
6058
6059                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6060                                         nla_data(attr), nla_len(attr),
6061                                         nl80211_match_policy);
6062                         if (err)
6063                                 goto out_free;
6064                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6065                         if (ssid) {
6066                                 if (WARN_ON(i >= n_match_sets)) {
6067                                         /* this indicates a programming error,
6068                                          * the loop above should have verified
6069                                          * things properly
6070                                          */
6071                                         err = -EINVAL;
6072                                         goto out_free;
6073                                 }
6074
6075                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6076                                         err = -EINVAL;
6077                                         goto out_free;
6078                                 }
6079                                 memcpy(request->match_sets[i].ssid.ssid,
6080                                        nla_data(ssid), nla_len(ssid));
6081                                 request->match_sets[i].ssid.ssid_len =
6082                                         nla_len(ssid);
6083                                 /* special attribute - old implemenation w/a */
6084                                 request->match_sets[i].rssi_thold =
6085                                         default_match_rssi;
6086                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6087                                 if (rssi)
6088                                         request->match_sets[i].rssi_thold =
6089                                                 nla_get_s32(rssi);
6090                         }
6091                         i++;
6092                 }
6093
6094                 /* there was no other matchset, so the RSSI one is alone */
6095                 if (i == 0 && n_match_sets)
6096                         request->match_sets[0].rssi_thold = default_match_rssi;
6097
6098                 request->min_rssi_thold = INT_MAX;
6099                 for (i = 0; i < n_match_sets; i++)
6100                         request->min_rssi_thold =
6101                                 min(request->match_sets[i].rssi_thold,
6102                                     request->min_rssi_thold);
6103         } else {
6104                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6105         }
6106
6107         if (ie_len) {
6108                 request->ie_len = ie_len;
6109                 memcpy((void *)request->ie,
6110                        nla_data(attrs[NL80211_ATTR_IE]),
6111                        request->ie_len);
6112         }
6113
6114         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6115                 request->flags = nla_get_u32(
6116                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6117                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6118                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6119                         err = -EOPNOTSUPP;
6120                         goto out_free;
6121                 }
6122
6123                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6124                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6125
6126                         if (!wdev) /* must be net-detect */
6127                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6128
6129                         if (!(wiphy->features & flg)) {
6130                                 err = -EOPNOTSUPP;
6131                                 goto out_free;
6132                         }
6133
6134                         if (wdev && wdev->current_bss) {
6135                                 err = -EOPNOTSUPP;
6136                                 goto out_free;
6137                         }
6138
6139                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6140                                                        request->mac_addr_mask);
6141                         if (err)
6142                                 goto out_free;
6143                 }
6144         }
6145
6146         request->interval = interval;
6147         request->scan_start = jiffies;
6148
6149         return request;
6150
6151 out_free:
6152         kfree(request);
6153         return ERR_PTR(err);
6154 }
6155
6156 static int nl80211_start_sched_scan(struct sk_buff *skb,
6157                                     struct genl_info *info)
6158 {
6159         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6160         struct net_device *dev = info->user_ptr[1];
6161         struct wireless_dev *wdev = dev->ieee80211_ptr;
6162         struct cfg80211_sched_scan_request *sched_scan_req;
6163         int err;
6164
6165         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6166             !rdev->ops->sched_scan_start)
6167                 return -EOPNOTSUPP;
6168
6169         if (rdev->sched_scan_req)
6170                 return -EINPROGRESS;
6171
6172         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6173                                                   info->attrs);
6174
6175         err = PTR_ERR_OR_ZERO(sched_scan_req);
6176         if (err)
6177                 goto out_err;
6178
6179         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6180         if (err)
6181                 goto out_free;
6182
6183         sched_scan_req->dev = dev;
6184         sched_scan_req->wiphy = &rdev->wiphy;
6185
6186         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6187                 sched_scan_req->owner_nlportid = info->snd_portid;
6188
6189         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6190
6191         nl80211_send_sched_scan(rdev, dev,
6192                                 NL80211_CMD_START_SCHED_SCAN);
6193         return 0;
6194
6195 out_free:
6196         kfree(sched_scan_req);
6197 out_err:
6198         return err;
6199 }
6200
6201 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6202                                    struct genl_info *info)
6203 {
6204         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6205
6206         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6207             !rdev->ops->sched_scan_stop)
6208                 return -EOPNOTSUPP;
6209
6210         return __cfg80211_stop_sched_scan(rdev, false);
6211 }
6212
6213 static int nl80211_start_radar_detection(struct sk_buff *skb,
6214                                          struct genl_info *info)
6215 {
6216         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6217         struct net_device *dev = info->user_ptr[1];
6218         struct wireless_dev *wdev = dev->ieee80211_ptr;
6219         struct cfg80211_chan_def chandef;
6220         enum nl80211_dfs_regions dfs_region;
6221         unsigned int cac_time_ms;
6222         int err;
6223
6224         dfs_region = reg_get_dfs_region(wdev->wiphy);
6225         if (dfs_region == NL80211_DFS_UNSET)
6226                 return -EINVAL;
6227
6228         err = nl80211_parse_chandef(rdev, info, &chandef);
6229         if (err)
6230                 return err;
6231
6232         if (netif_carrier_ok(dev))
6233                 return -EBUSY;
6234
6235         if (wdev->cac_started)
6236                 return -EBUSY;
6237
6238         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6239                                             wdev->iftype);
6240         if (err < 0)
6241                 return err;
6242
6243         if (err == 0)
6244                 return -EINVAL;
6245
6246         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6247                 return -EINVAL;
6248
6249         if (!rdev->ops->start_radar_detection)
6250                 return -EOPNOTSUPP;
6251
6252         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6253         if (WARN_ON(!cac_time_ms))
6254                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6255
6256         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6257                                                cac_time_ms);
6258         if (!err) {
6259                 wdev->chandef = chandef;
6260                 wdev->cac_started = true;
6261                 wdev->cac_start_time = jiffies;
6262                 wdev->cac_time_ms = cac_time_ms;
6263         }
6264         return err;
6265 }
6266
6267 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6268 {
6269         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6270         struct net_device *dev = info->user_ptr[1];
6271         struct wireless_dev *wdev = dev->ieee80211_ptr;
6272         struct cfg80211_csa_settings params;
6273         /* csa_attrs is defined static to avoid waste of stack size - this
6274          * function is called under RTNL lock, so this should not be a problem.
6275          */
6276         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6277         int err;
6278         bool need_new_beacon = false;
6279         int len, i;
6280         u32 cs_count;
6281
6282         if (!rdev->ops->channel_switch ||
6283             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6284                 return -EOPNOTSUPP;
6285
6286         switch (dev->ieee80211_ptr->iftype) {
6287         case NL80211_IFTYPE_AP:
6288         case NL80211_IFTYPE_P2P_GO:
6289                 need_new_beacon = true;
6290
6291                 /* useless if AP is not running */
6292                 if (!wdev->beacon_interval)
6293                         return -ENOTCONN;
6294                 break;
6295         case NL80211_IFTYPE_ADHOC:
6296                 if (!wdev->ssid_len)
6297                         return -ENOTCONN;
6298                 break;
6299         case NL80211_IFTYPE_MESH_POINT:
6300                 if (!wdev->mesh_id_len)
6301                         return -ENOTCONN;
6302                 break;
6303         default:
6304                 return -EOPNOTSUPP;
6305         }
6306
6307         memset(&params, 0, sizeof(params));
6308
6309         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6310             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6311                 return -EINVAL;
6312
6313         /* only important for AP, IBSS and mesh create IEs internally */
6314         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6315                 return -EINVAL;
6316
6317         /* Even though the attribute is u32, the specification says
6318          * u8, so let's make sure we don't overflow.
6319          */
6320         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6321         if (cs_count > 255)
6322                 return -EINVAL;
6323
6324         params.count = cs_count;
6325
6326         if (!need_new_beacon)
6327                 goto skip_beacons;
6328
6329         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6330         if (err)
6331                 return err;
6332
6333         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6334                                info->attrs[NL80211_ATTR_CSA_IES],
6335                                nl80211_policy);
6336         if (err)
6337                 return err;
6338
6339         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6340         if (err)
6341                 return err;
6342
6343         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6344                 return -EINVAL;
6345
6346         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6347         if (!len || (len % sizeof(u16)))
6348                 return -EINVAL;
6349
6350         params.n_counter_offsets_beacon = len / sizeof(u16);
6351         if (rdev->wiphy.max_num_csa_counters &&
6352             (params.n_counter_offsets_beacon >
6353              rdev->wiphy.max_num_csa_counters))
6354                 return -EINVAL;
6355
6356         params.counter_offsets_beacon =
6357                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6358
6359         /* sanity checks - counters should fit and be the same */
6360         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6361                 u16 offset = params.counter_offsets_beacon[i];
6362
6363                 if (offset >= params.beacon_csa.tail_len)
6364                         return -EINVAL;
6365
6366                 if (params.beacon_csa.tail[offset] != params.count)
6367                         return -EINVAL;
6368         }
6369
6370         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6371                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6372                 if (!len || (len % sizeof(u16)))
6373                         return -EINVAL;
6374
6375                 params.n_counter_offsets_presp = len / sizeof(u16);
6376                 if (rdev->wiphy.max_num_csa_counters &&
6377                     (params.n_counter_offsets_beacon >
6378                      rdev->wiphy.max_num_csa_counters))
6379                         return -EINVAL;
6380
6381                 params.counter_offsets_presp =
6382                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6383
6384                 /* sanity checks - counters should fit and be the same */
6385                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6386                         u16 offset = params.counter_offsets_presp[i];
6387
6388                         if (offset >= params.beacon_csa.probe_resp_len)
6389                                 return -EINVAL;
6390
6391                         if (params.beacon_csa.probe_resp[offset] !=
6392                             params.count)
6393                                 return -EINVAL;
6394                 }
6395         }
6396
6397 skip_beacons:
6398         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6399         if (err)
6400                 return err;
6401
6402         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6403                                      wdev->iftype))
6404                 return -EINVAL;
6405
6406         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6407                                             &params.chandef,
6408                                             wdev->iftype);
6409         if (err < 0)
6410                 return err;
6411
6412         if (err > 0)
6413                 params.radar_required = true;
6414
6415         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6416                 params.block_tx = true;
6417
6418         wdev_lock(wdev);
6419         err = rdev_channel_switch(rdev, dev, &params);
6420         wdev_unlock(wdev);
6421
6422         return err;
6423 }
6424
6425 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6426                             u32 seq, int flags,
6427                             struct cfg80211_registered_device *rdev,
6428                             struct wireless_dev *wdev,
6429                             struct cfg80211_internal_bss *intbss)
6430 {
6431         struct cfg80211_bss *res = &intbss->pub;
6432         const struct cfg80211_bss_ies *ies;
6433         void *hdr;
6434         struct nlattr *bss;
6435
6436         ASSERT_WDEV_LOCK(wdev);
6437
6438         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6439                              NL80211_CMD_NEW_SCAN_RESULTS);
6440         if (!hdr)
6441                 return -1;
6442
6443         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6444
6445         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6446                 goto nla_put_failure;
6447         if (wdev->netdev &&
6448             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6449                 goto nla_put_failure;
6450         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6451                 goto nla_put_failure;
6452
6453         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6454         if (!bss)
6455                 goto nla_put_failure;
6456         if ((!is_zero_ether_addr(res->bssid) &&
6457              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6458                 goto nla_put_failure;
6459
6460         rcu_read_lock();
6461         /* indicate whether we have probe response data or not */
6462         if (rcu_access_pointer(res->proberesp_ies) &&
6463             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6464                 goto fail_unlock_rcu;
6465
6466         /* this pointer prefers to be pointed to probe response data
6467          * but is always valid
6468          */
6469         ies = rcu_dereference(res->ies);
6470         if (ies) {
6471                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6472                         goto fail_unlock_rcu;
6473                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6474                                         ies->len, ies->data))
6475                         goto fail_unlock_rcu;
6476         }
6477
6478         /* and this pointer is always (unless driver didn't know) beacon data */
6479         ies = rcu_dereference(res->beacon_ies);
6480         if (ies && ies->from_beacon) {
6481                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6482                         goto fail_unlock_rcu;
6483                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6484                                         ies->len, ies->data))
6485                         goto fail_unlock_rcu;
6486         }
6487         rcu_read_unlock();
6488
6489         if (res->beacon_interval &&
6490             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6491                 goto nla_put_failure;
6492         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6493             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6494             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6495             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6496                         jiffies_to_msecs(jiffies - intbss->ts)))
6497                 goto nla_put_failure;
6498
6499         switch (rdev->wiphy.signal_type) {
6500         case CFG80211_SIGNAL_TYPE_MBM:
6501                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6502                         goto nla_put_failure;
6503                 break;
6504         case CFG80211_SIGNAL_TYPE_UNSPEC:
6505                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6506                         goto nla_put_failure;
6507                 break;
6508         default:
6509                 break;
6510         }
6511
6512         switch (wdev->iftype) {
6513         case NL80211_IFTYPE_P2P_CLIENT:
6514         case NL80211_IFTYPE_STATION:
6515                 if (intbss == wdev->current_bss &&
6516                     nla_put_u32(msg, NL80211_BSS_STATUS,
6517                                 NL80211_BSS_STATUS_ASSOCIATED))
6518                         goto nla_put_failure;
6519                 break;
6520         case NL80211_IFTYPE_ADHOC:
6521                 if (intbss == wdev->current_bss &&
6522                     nla_put_u32(msg, NL80211_BSS_STATUS,
6523                                 NL80211_BSS_STATUS_IBSS_JOINED))
6524                         goto nla_put_failure;
6525                 break;
6526         default:
6527                 break;
6528         }
6529
6530         nla_nest_end(msg, bss);
6531
6532         return genlmsg_end(msg, hdr);
6533
6534  fail_unlock_rcu:
6535         rcu_read_unlock();
6536  nla_put_failure:
6537         genlmsg_cancel(msg, hdr);
6538         return -EMSGSIZE;
6539 }
6540
6541 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6542 {
6543         struct cfg80211_registered_device *rdev;
6544         struct cfg80211_internal_bss *scan;
6545         struct wireless_dev *wdev;
6546         int start = cb->args[2], idx = 0;
6547         int err;
6548
6549         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6550         if (err)
6551                 return err;
6552
6553         wdev_lock(wdev);
6554         spin_lock_bh(&rdev->bss_lock);
6555         cfg80211_bss_expire(rdev);
6556
6557         cb->seq = rdev->bss_generation;
6558
6559         list_for_each_entry(scan, &rdev->bss_list, list) {
6560                 if (++idx <= start)
6561                         continue;
6562                 if (nl80211_send_bss(skb, cb,
6563                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6564                                 rdev, wdev, scan) < 0) {
6565                         idx--;
6566                         break;
6567                 }
6568         }
6569
6570         spin_unlock_bh(&rdev->bss_lock);
6571         wdev_unlock(wdev);
6572
6573         cb->args[2] = idx;
6574         nl80211_finish_wdev_dump(rdev);
6575
6576         return skb->len;
6577 }
6578
6579 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6580                                int flags, struct net_device *dev,
6581                                bool allow_radio_stats,
6582                                struct survey_info *survey)
6583 {
6584         void *hdr;
6585         struct nlattr *infoattr;
6586
6587         /* skip radio stats if userspace didn't request them */
6588         if (!survey->channel && !allow_radio_stats)
6589                 return 0;
6590
6591         hdr = nl80211hdr_put(msg, portid, seq, flags,
6592                              NL80211_CMD_NEW_SURVEY_RESULTS);
6593         if (!hdr)
6594                 return -ENOMEM;
6595
6596         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6597                 goto nla_put_failure;
6598
6599         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6600         if (!infoattr)
6601                 goto nla_put_failure;
6602
6603         if (survey->channel &&
6604             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6605                         survey->channel->center_freq))
6606                 goto nla_put_failure;
6607
6608         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6609             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6610                 goto nla_put_failure;
6611         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6612             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6613                 goto nla_put_failure;
6614         if ((survey->filled & SURVEY_INFO_TIME) &&
6615             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6616                         survey->time))
6617                 goto nla_put_failure;
6618         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6619             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6620                         survey->time_busy))
6621                 goto nla_put_failure;
6622         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6623             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6624                         survey->time_ext_busy))
6625                 goto nla_put_failure;
6626         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6627             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6628                         survey->time_rx))
6629                 goto nla_put_failure;
6630         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6631             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6632                         survey->time_tx))
6633                 goto nla_put_failure;
6634         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6635             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6636                         survey->time_scan))
6637                 goto nla_put_failure;
6638
6639         nla_nest_end(msg, infoattr);
6640
6641         return genlmsg_end(msg, hdr);
6642
6643  nla_put_failure:
6644         genlmsg_cancel(msg, hdr);
6645         return -EMSGSIZE;
6646 }
6647
6648 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6649 {
6650         struct survey_info survey;
6651         struct cfg80211_registered_device *rdev;
6652         struct wireless_dev *wdev;
6653         int survey_idx = cb->args[2];
6654         int res;
6655         bool radio_stats;
6656
6657         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6658         if (res)
6659                 return res;
6660
6661         /* prepare_wdev_dump parsed the attributes */
6662         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6663
6664         if (!wdev->netdev) {
6665                 res = -EINVAL;
6666                 goto out_err;
6667         }
6668
6669         if (!rdev->ops->dump_survey) {
6670                 res = -EOPNOTSUPP;
6671                 goto out_err;
6672         }
6673
6674         while (1) {
6675                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6676                 if (res == -ENOENT)
6677                         break;
6678                 if (res)
6679                         goto out_err;
6680
6681                 /* don't send disabled channels, but do send non-channel data */
6682                 if (survey.channel &&
6683                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6684                         survey_idx++;
6685                         continue;
6686                 }
6687
6688                 if (nl80211_send_survey(skb,
6689                                 NETLINK_CB(cb->skb).portid,
6690                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6691                                 wdev->netdev, radio_stats, &survey) < 0)
6692                         goto out;
6693                 survey_idx++;
6694         }
6695
6696  out:
6697         cb->args[2] = survey_idx;
6698         res = skb->len;
6699  out_err:
6700         nl80211_finish_wdev_dump(rdev);
6701         return res;
6702 }
6703
6704 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6705 {
6706         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6707                                   NL80211_WPA_VERSION_2));
6708 }
6709
6710 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6711 {
6712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6713         struct net_device *dev = info->user_ptr[1];
6714         struct ieee80211_channel *chan;
6715         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6716         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6717         enum nl80211_auth_type auth_type;
6718         struct key_parse key;
6719         bool local_state_change;
6720
6721         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6722                 return -EINVAL;
6723
6724         if (!info->attrs[NL80211_ATTR_MAC])
6725                 return -EINVAL;
6726
6727         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6728                 return -EINVAL;
6729
6730         if (!info->attrs[NL80211_ATTR_SSID])
6731                 return -EINVAL;
6732
6733         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6734                 return -EINVAL;
6735
6736         err = nl80211_parse_key(info, &key);
6737         if (err)
6738                 return err;
6739
6740         if (key.idx >= 0) {
6741                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6742                         return -EINVAL;
6743                 if (!key.p.key || !key.p.key_len)
6744                         return -EINVAL;
6745                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6746                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6747                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6748                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6749                         return -EINVAL;
6750                 if (key.idx > 4)
6751                         return -EINVAL;
6752         } else {
6753                 key.p.key_len = 0;
6754                 key.p.key = NULL;
6755         }
6756
6757         if (key.idx >= 0) {
6758                 int i;
6759                 bool ok = false;
6760                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6761                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6762                                 ok = true;
6763                                 break;
6764                         }
6765                 }
6766                 if (!ok)
6767                         return -EINVAL;
6768         }
6769
6770         if (!rdev->ops->auth)
6771                 return -EOPNOTSUPP;
6772
6773         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6774             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6775                 return -EOPNOTSUPP;
6776
6777         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6778         chan = nl80211_get_valid_chan(&rdev->wiphy,
6779                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6780         if (!chan)
6781                 return -EINVAL;
6782
6783         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6784         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6785
6786         if (info->attrs[NL80211_ATTR_IE]) {
6787                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6788                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6789         }
6790
6791         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6792         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6793                 return -EINVAL;
6794
6795         if (auth_type == NL80211_AUTHTYPE_SAE &&
6796             !info->attrs[NL80211_ATTR_SAE_DATA])
6797                 return -EINVAL;
6798
6799         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6800                 if (auth_type != NL80211_AUTHTYPE_SAE)
6801                         return -EINVAL;
6802                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6803                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6804                 /* need to include at least Auth Transaction and Status Code */
6805                 if (sae_data_len < 4)
6806                         return -EINVAL;
6807         }
6808
6809         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6810
6811         /*
6812          * Since we no longer track auth state, ignore
6813          * requests to only change local state.
6814          */
6815         if (local_state_change)
6816                 return 0;
6817
6818         wdev_lock(dev->ieee80211_ptr);
6819         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6820                                  ssid, ssid_len, ie, ie_len,
6821                                  key.p.key, key.p.key_len, key.idx,
6822                                  sae_data, sae_data_len);
6823         wdev_unlock(dev->ieee80211_ptr);
6824         return err;
6825 }
6826
6827 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6828                                    struct genl_info *info,
6829                                    struct cfg80211_crypto_settings *settings,
6830                                    int cipher_limit)
6831 {
6832         memset(settings, 0, sizeof(*settings));
6833
6834         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6835
6836         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6837                 u16 proto;
6838                 proto = nla_get_u16(
6839                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6840                 settings->control_port_ethertype = cpu_to_be16(proto);
6841                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6842                     proto != ETH_P_PAE)
6843                         return -EINVAL;
6844                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6845                         settings->control_port_no_encrypt = true;
6846         } else
6847                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6848
6849         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6850                 void *data;
6851                 int len, i;
6852
6853                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6854                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6855                 settings->n_ciphers_pairwise = len / sizeof(u32);
6856
6857                 if (len % sizeof(u32))
6858                         return -EINVAL;
6859
6860                 if (settings->n_ciphers_pairwise > cipher_limit)
6861                         return -EINVAL;
6862
6863                 memcpy(settings->ciphers_pairwise, data, len);
6864
6865                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6866                         if (!cfg80211_supported_cipher_suite(
6867                                         &rdev->wiphy,
6868                                         settings->ciphers_pairwise[i]))
6869                                 return -EINVAL;
6870         }
6871
6872         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6873                 settings->cipher_group =
6874                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6875                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6876                                                      settings->cipher_group))
6877                         return -EINVAL;
6878         }
6879
6880         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6881                 settings->wpa_versions =
6882                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6883                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6884                         return -EINVAL;
6885         }
6886
6887         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6888                 void *data;
6889                 int len;
6890
6891                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6892                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6893                 settings->n_akm_suites = len / sizeof(u32);
6894
6895                 if (len % sizeof(u32))
6896                         return -EINVAL;
6897
6898                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6899                         return -EINVAL;
6900
6901                 memcpy(settings->akm_suites, data, len);
6902         }
6903
6904         return 0;
6905 }
6906
6907 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
6908 {
6909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6910         struct net_device *dev = info->user_ptr[1];
6911         struct ieee80211_channel *chan;
6912         struct cfg80211_assoc_request req = {};
6913         const u8 *bssid, *ssid;
6914         int err, ssid_len = 0;
6915
6916         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6917                 return -EINVAL;
6918
6919         if (!info->attrs[NL80211_ATTR_MAC] ||
6920             !info->attrs[NL80211_ATTR_SSID] ||
6921             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
6922                 return -EINVAL;
6923
6924         if (!rdev->ops->assoc)
6925                 return -EOPNOTSUPP;
6926
6927         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6928             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6929                 return -EOPNOTSUPP;
6930
6931         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6932
6933         chan = nl80211_get_valid_chan(&rdev->wiphy,
6934                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6935         if (!chan)
6936                 return -EINVAL;
6937
6938         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6939         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6940
6941         if (info->attrs[NL80211_ATTR_IE]) {
6942                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6943                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6944         }
6945
6946         if (info->attrs[NL80211_ATTR_USE_MFP]) {
6947                 enum nl80211_mfp mfp =
6948                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
6949                 if (mfp == NL80211_MFP_REQUIRED)
6950                         req.use_mfp = true;
6951                 else if (mfp != NL80211_MFP_NO)
6952                         return -EINVAL;
6953         }
6954
6955         if (info->attrs[NL80211_ATTR_PREV_BSSID])
6956                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
6957
6958         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
6959                 req.flags |= ASSOC_REQ_DISABLE_HT;
6960
6961         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6962                 memcpy(&req.ht_capa_mask,
6963                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
6964                        sizeof(req.ht_capa_mask));
6965
6966         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
6967                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
6968                         return -EINVAL;
6969                 memcpy(&req.ht_capa,
6970                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
6971                        sizeof(req.ht_capa));
6972         }
6973
6974         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
6975                 req.flags |= ASSOC_REQ_DISABLE_VHT;
6976
6977         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6978                 memcpy(&req.vht_capa_mask,
6979                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
6980                        sizeof(req.vht_capa_mask));
6981
6982         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
6983                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
6984                         return -EINVAL;
6985                 memcpy(&req.vht_capa,
6986                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
6987                        sizeof(req.vht_capa));
6988         }
6989
6990         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
6991                 if (!(rdev->wiphy.features &
6992                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
6993                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
6994                         return -EINVAL;
6995                 req.flags |= ASSOC_REQ_USE_RRM;
6996         }
6997
6998         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
6999         if (!err) {
7000                 wdev_lock(dev->ieee80211_ptr);
7001                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7002                                           ssid, ssid_len, &req);
7003                 wdev_unlock(dev->ieee80211_ptr);
7004         }
7005
7006         return err;
7007 }
7008
7009 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7010 {
7011         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7012         struct net_device *dev = info->user_ptr[1];
7013         const u8 *ie = NULL, *bssid;
7014         int ie_len = 0, err;
7015         u16 reason_code;
7016         bool local_state_change;
7017
7018         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7019                 return -EINVAL;
7020
7021         if (!info->attrs[NL80211_ATTR_MAC])
7022                 return -EINVAL;
7023
7024         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7025                 return -EINVAL;
7026
7027         if (!rdev->ops->deauth)
7028                 return -EOPNOTSUPP;
7029
7030         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7031             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7032                 return -EOPNOTSUPP;
7033
7034         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7035
7036         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7037         if (reason_code == 0) {
7038                 /* Reason Code 0 is reserved */
7039                 return -EINVAL;
7040         }
7041
7042         if (info->attrs[NL80211_ATTR_IE]) {
7043                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7044                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7045         }
7046
7047         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7048
7049         wdev_lock(dev->ieee80211_ptr);
7050         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7051                                    local_state_change);
7052         wdev_unlock(dev->ieee80211_ptr);
7053         return err;
7054 }
7055
7056 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7057 {
7058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7059         struct net_device *dev = info->user_ptr[1];
7060         const u8 *ie = NULL, *bssid;
7061         int ie_len = 0, err;
7062         u16 reason_code;
7063         bool local_state_change;
7064
7065         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7066                 return -EINVAL;
7067
7068         if (!info->attrs[NL80211_ATTR_MAC])
7069                 return -EINVAL;
7070
7071         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7072                 return -EINVAL;
7073
7074         if (!rdev->ops->disassoc)
7075                 return -EOPNOTSUPP;
7076
7077         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7078             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7079                 return -EOPNOTSUPP;
7080
7081         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7082
7083         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7084         if (reason_code == 0) {
7085                 /* Reason Code 0 is reserved */
7086                 return -EINVAL;
7087         }
7088
7089         if (info->attrs[NL80211_ATTR_IE]) {
7090                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7091                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7092         }
7093
7094         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7095
7096         wdev_lock(dev->ieee80211_ptr);
7097         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7098                                      local_state_change);
7099         wdev_unlock(dev->ieee80211_ptr);
7100         return err;
7101 }
7102
7103 static bool
7104 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7105                          int mcast_rate[IEEE80211_NUM_BANDS],
7106                          int rateval)
7107 {
7108         struct wiphy *wiphy = &rdev->wiphy;
7109         bool found = false;
7110         int band, i;
7111
7112         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7113                 struct ieee80211_supported_band *sband;
7114
7115                 sband = wiphy->bands[band];
7116                 if (!sband)
7117                         continue;
7118
7119                 for (i = 0; i < sband->n_bitrates; i++) {
7120                         if (sband->bitrates[i].bitrate == rateval) {
7121                                 mcast_rate[band] = i + 1;
7122                                 found = true;
7123                                 break;
7124                         }
7125                 }
7126         }
7127
7128         return found;
7129 }
7130
7131 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7132 {
7133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7134         struct net_device *dev = info->user_ptr[1];
7135         struct cfg80211_ibss_params ibss;
7136         struct wiphy *wiphy;
7137         struct cfg80211_cached_keys *connkeys = NULL;
7138         int err;
7139
7140         memset(&ibss, 0, sizeof(ibss));
7141
7142         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7143                 return -EINVAL;
7144
7145         if (!info->attrs[NL80211_ATTR_SSID] ||
7146             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7147                 return -EINVAL;
7148
7149         ibss.beacon_interval = 100;
7150
7151         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7152                 ibss.beacon_interval =
7153                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7154                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7155                         return -EINVAL;
7156         }
7157
7158         if (!rdev->ops->join_ibss)
7159                 return -EOPNOTSUPP;
7160
7161         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7162                 return -EOPNOTSUPP;
7163
7164         wiphy = &rdev->wiphy;
7165
7166         if (info->attrs[NL80211_ATTR_MAC]) {
7167                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7168
7169                 if (!is_valid_ether_addr(ibss.bssid))
7170                         return -EINVAL;
7171         }
7172         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7173         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7174
7175         if (info->attrs[NL80211_ATTR_IE]) {
7176                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7177                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7178         }
7179
7180         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7181         if (err)
7182                 return err;
7183
7184         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7185                                      NL80211_IFTYPE_ADHOC))
7186                 return -EINVAL;
7187
7188         switch (ibss.chandef.width) {
7189         case NL80211_CHAN_WIDTH_5:
7190         case NL80211_CHAN_WIDTH_10:
7191         case NL80211_CHAN_WIDTH_20_NOHT:
7192                 break;
7193         case NL80211_CHAN_WIDTH_20:
7194         case NL80211_CHAN_WIDTH_40:
7195                 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)
7196                         break;
7197         default:
7198                 return -EINVAL;
7199         }
7200
7201         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7202         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7203
7204         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7205                 u8 *rates =
7206                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7207                 int n_rates =
7208                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7209                 struct ieee80211_supported_band *sband =
7210                         wiphy->bands[ibss.chandef.chan->band];
7211
7212                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7213                                              &ibss.basic_rates);
7214                 if (err)
7215                         return err;
7216         }
7217
7218         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7219                 memcpy(&ibss.ht_capa_mask,
7220                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7221                        sizeof(ibss.ht_capa_mask));
7222
7223         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7224                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7225                         return -EINVAL;
7226                 memcpy(&ibss.ht_capa,
7227                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7228                        sizeof(ibss.ht_capa));
7229         }
7230
7231         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7232             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7233                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7234                 return -EINVAL;
7235
7236         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7237                 bool no_ht = false;
7238
7239                 connkeys = nl80211_parse_connkeys(rdev,
7240                                           info->attrs[NL80211_ATTR_KEYS],
7241                                           &no_ht);
7242                 if (IS_ERR(connkeys))
7243                         return PTR_ERR(connkeys);
7244
7245                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7246                     no_ht) {
7247                         kfree(connkeys);
7248                         return -EINVAL;
7249                 }
7250         }
7251
7252         ibss.control_port =
7253                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7254
7255         ibss.userspace_handles_dfs =
7256                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7257
7258         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7259         if (err)
7260                 kzfree(connkeys);
7261         return err;
7262 }
7263
7264 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7265 {
7266         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7267         struct net_device *dev = info->user_ptr[1];
7268
7269         if (!rdev->ops->leave_ibss)
7270                 return -EOPNOTSUPP;
7271
7272         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7273                 return -EOPNOTSUPP;
7274
7275         return cfg80211_leave_ibss(rdev, dev, false);
7276 }
7277
7278 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7279 {
7280         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7281         struct net_device *dev = info->user_ptr[1];
7282         int mcast_rate[IEEE80211_NUM_BANDS];
7283         u32 nla_rate;
7284         int err;
7285
7286         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7287             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7288                 return -EOPNOTSUPP;
7289
7290         if (!rdev->ops->set_mcast_rate)
7291                 return -EOPNOTSUPP;
7292
7293         memset(mcast_rate, 0, sizeof(mcast_rate));
7294
7295         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7296                 return -EINVAL;
7297
7298         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7299         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7300                 return -EINVAL;
7301
7302         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7303
7304         return err;
7305 }
7306
7307 static struct sk_buff *
7308 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7309                             int approxlen, u32 portid, u32 seq,
7310                             enum nl80211_commands cmd,
7311                             enum nl80211_attrs attr,
7312                             const struct nl80211_vendor_cmd_info *info,
7313                             gfp_t gfp)
7314 {
7315         struct sk_buff *skb;
7316         void *hdr;
7317         struct nlattr *data;
7318
7319         skb = nlmsg_new(approxlen + 100, gfp);
7320         if (!skb)
7321                 return NULL;
7322
7323         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7324         if (!hdr) {
7325                 kfree_skb(skb);
7326                 return NULL;
7327         }
7328
7329         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7330                 goto nla_put_failure;
7331
7332         if (info) {
7333                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7334                                 info->vendor_id))
7335                         goto nla_put_failure;
7336                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7337                                 info->subcmd))
7338                         goto nla_put_failure;
7339         }
7340
7341         data = nla_nest_start(skb, attr);
7342
7343         ((void **)skb->cb)[0] = rdev;
7344         ((void **)skb->cb)[1] = hdr;
7345         ((void **)skb->cb)[2] = data;
7346
7347         return skb;
7348
7349  nla_put_failure:
7350         kfree_skb(skb);
7351         return NULL;
7352 }
7353
7354 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7355                                            enum nl80211_commands cmd,
7356                                            enum nl80211_attrs attr,
7357                                            int vendor_event_idx,
7358                                            int approxlen, gfp_t gfp)
7359 {
7360         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7361         const struct nl80211_vendor_cmd_info *info;
7362
7363         switch (cmd) {
7364         case NL80211_CMD_TESTMODE:
7365                 if (WARN_ON(vendor_event_idx != -1))
7366                         return NULL;
7367                 info = NULL;
7368                 break;
7369         case NL80211_CMD_VENDOR:
7370                 if (WARN_ON(vendor_event_idx < 0 ||
7371                             vendor_event_idx >= wiphy->n_vendor_events))
7372                         return NULL;
7373                 info = &wiphy->vendor_events[vendor_event_idx];
7374                 break;
7375         default:
7376                 WARN_ON(1);
7377                 return NULL;
7378         }
7379
7380         return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0,
7381                                            cmd, attr, info, gfp);
7382 }
7383 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7384
7385 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7386 {
7387         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7388         void *hdr = ((void **)skb->cb)[1];
7389         struct nlattr *data = ((void **)skb->cb)[2];
7390         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7391
7392         /* clear CB data for netlink core to own from now on */
7393         memset(skb->cb, 0, sizeof(skb->cb));
7394
7395         nla_nest_end(skb, data);
7396         genlmsg_end(skb, hdr);
7397
7398         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7399                 mcgrp = NL80211_MCGRP_VENDOR;
7400
7401         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7402                                 mcgrp, gfp);
7403 }
7404 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7405
7406 #ifdef CONFIG_NL80211_TESTMODE
7407 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7408 {
7409         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7410         struct wireless_dev *wdev =
7411                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7412         int err;
7413
7414         if (!rdev->ops->testmode_cmd)
7415                 return -EOPNOTSUPP;
7416
7417         if (IS_ERR(wdev)) {
7418                 err = PTR_ERR(wdev);
7419                 if (err != -EINVAL)
7420                         return err;
7421                 wdev = NULL;
7422         } else if (wdev->wiphy != &rdev->wiphy) {
7423                 return -EINVAL;
7424         }
7425
7426         if (!info->attrs[NL80211_ATTR_TESTDATA])
7427                 return -EINVAL;
7428
7429         rdev->cur_cmd_info = info;
7430         err = rdev_testmode_cmd(rdev, wdev,
7431                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7432                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7433         rdev->cur_cmd_info = NULL;
7434
7435         return err;
7436 }
7437
7438 static int nl80211_testmode_dump(struct sk_buff *skb,
7439                                  struct netlink_callback *cb)
7440 {
7441         struct cfg80211_registered_device *rdev;
7442         int err;
7443         long phy_idx;
7444         void *data = NULL;
7445         int data_len = 0;
7446
7447         rtnl_lock();
7448
7449         if (cb->args[0]) {
7450                 /*
7451                  * 0 is a valid index, but not valid for args[0],
7452                  * so we need to offset by 1.
7453                  */
7454                 phy_idx = cb->args[0] - 1;
7455         } else {
7456                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7457                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7458                                   nl80211_policy);
7459                 if (err)
7460                         goto out_err;
7461
7462                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7463                                                   nl80211_fam.attrbuf);
7464                 if (IS_ERR(rdev)) {
7465                         err = PTR_ERR(rdev);
7466                         goto out_err;
7467                 }
7468                 phy_idx = rdev->wiphy_idx;
7469                 rdev = NULL;
7470
7471                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7472                         cb->args[1] =
7473                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7474         }
7475
7476         if (cb->args[1]) {
7477                 data = nla_data((void *)cb->args[1]);
7478                 data_len = nla_len((void *)cb->args[1]);
7479         }
7480
7481         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7482         if (!rdev) {
7483                 err = -ENOENT;
7484                 goto out_err;
7485         }
7486
7487         if (!rdev->ops->testmode_dump) {
7488                 err = -EOPNOTSUPP;
7489                 goto out_err;
7490         }
7491
7492         while (1) {
7493                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7494                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7495                                            NL80211_CMD_TESTMODE);
7496                 struct nlattr *tmdata;
7497
7498                 if (!hdr)
7499                         break;
7500
7501                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7502                         genlmsg_cancel(skb, hdr);
7503                         break;
7504                 }
7505
7506                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7507                 if (!tmdata) {
7508                         genlmsg_cancel(skb, hdr);
7509                         break;
7510                 }
7511                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7512                 nla_nest_end(skb, tmdata);
7513
7514                 if (err == -ENOBUFS || err == -ENOENT) {
7515                         genlmsg_cancel(skb, hdr);
7516                         break;
7517                 } else if (err) {
7518                         genlmsg_cancel(skb, hdr);
7519                         goto out_err;
7520                 }
7521
7522                 genlmsg_end(skb, hdr);
7523         }
7524
7525         err = skb->len;
7526         /* see above */
7527         cb->args[0] = phy_idx + 1;
7528  out_err:
7529         rtnl_unlock();
7530         return err;
7531 }
7532 #endif
7533
7534 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7535 {
7536         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7537         struct net_device *dev = info->user_ptr[1];
7538         struct cfg80211_connect_params connect;
7539         struct wiphy *wiphy;
7540         struct cfg80211_cached_keys *connkeys = NULL;
7541         int err;
7542
7543         memset(&connect, 0, sizeof(connect));
7544
7545         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7546                 return -EINVAL;
7547
7548         if (!info->attrs[NL80211_ATTR_SSID] ||
7549             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7550                 return -EINVAL;
7551
7552         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7553                 connect.auth_type =
7554                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7555                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7556                                              NL80211_CMD_CONNECT))
7557                         return -EINVAL;
7558         } else
7559                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7560
7561         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7562
7563         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7564                                       NL80211_MAX_NR_CIPHER_SUITES);
7565         if (err)
7566                 return err;
7567
7568         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7569             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7570                 return -EOPNOTSUPP;
7571
7572         wiphy = &rdev->wiphy;
7573
7574         connect.bg_scan_period = -1;
7575         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7576                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7577                 connect.bg_scan_period =
7578                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7579         }
7580
7581         if (info->attrs[NL80211_ATTR_MAC])
7582                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7583         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7584                 connect.bssid_hint =
7585                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7586         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7587         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7588
7589         if (info->attrs[NL80211_ATTR_IE]) {
7590                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7591                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7592         }
7593
7594         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7595                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7596                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7597                     connect.mfp != NL80211_MFP_NO)
7598                         return -EINVAL;
7599         } else {
7600                 connect.mfp = NL80211_MFP_NO;
7601         }
7602
7603         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7604                 connect.channel = nl80211_get_valid_chan(
7605                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7606                 if (!connect.channel)
7607                         return -EINVAL;
7608         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7609                 connect.channel_hint = nl80211_get_valid_chan(
7610                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7611                 if (!connect.channel_hint)
7612                         return -EINVAL;
7613         }
7614
7615         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7616                 connkeys = nl80211_parse_connkeys(rdev,
7617                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7618                 if (IS_ERR(connkeys))
7619                         return PTR_ERR(connkeys);
7620         }
7621
7622         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7623                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7624
7625         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7626                 memcpy(&connect.ht_capa_mask,
7627                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7628                        sizeof(connect.ht_capa_mask));
7629
7630         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7631                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7632                         kzfree(connkeys);
7633                         return -EINVAL;
7634                 }
7635                 memcpy(&connect.ht_capa,
7636                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7637                        sizeof(connect.ht_capa));
7638         }
7639
7640         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7641                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7642
7643         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7644                 memcpy(&connect.vht_capa_mask,
7645                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7646                        sizeof(connect.vht_capa_mask));
7647
7648         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7649                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7650                         kzfree(connkeys);
7651                         return -EINVAL;
7652                 }
7653                 memcpy(&connect.vht_capa,
7654                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7655                        sizeof(connect.vht_capa));
7656         }
7657
7658         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7659                 if (!(rdev->wiphy.features &
7660                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7661                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7662                         return -EINVAL;
7663                 connect.flags |= ASSOC_REQ_USE_RRM;
7664         }
7665
7666         wdev_lock(dev->ieee80211_ptr);
7667         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7668         wdev_unlock(dev->ieee80211_ptr);
7669         if (err)
7670                 kzfree(connkeys);
7671         return err;
7672 }
7673
7674 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7675 {
7676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7677         struct net_device *dev = info->user_ptr[1];
7678         u16 reason;
7679         int ret;
7680
7681         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7682                 reason = WLAN_REASON_DEAUTH_LEAVING;
7683         else
7684                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7685
7686         if (reason == 0)
7687                 return -EINVAL;
7688
7689         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7690             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7691                 return -EOPNOTSUPP;
7692
7693         wdev_lock(dev->ieee80211_ptr);
7694         ret = cfg80211_disconnect(rdev, dev, reason, true);
7695         wdev_unlock(dev->ieee80211_ptr);
7696         return ret;
7697 }
7698
7699 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7700 {
7701         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7702         struct net *net;
7703         int err;
7704         u32 pid;
7705
7706         if (!info->attrs[NL80211_ATTR_PID])
7707                 return -EINVAL;
7708
7709         pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7710
7711         net = get_net_ns_by_pid(pid);
7712         if (IS_ERR(net))
7713                 return PTR_ERR(net);
7714
7715         err = 0;
7716
7717         /* check if anything to do */
7718         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7719                 err = cfg80211_switch_netns(rdev, net);
7720
7721         put_net(net);
7722         return err;
7723 }
7724
7725 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7726 {
7727         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7728         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7729                         struct cfg80211_pmksa *pmksa) = NULL;
7730         struct net_device *dev = info->user_ptr[1];
7731         struct cfg80211_pmksa pmksa;
7732
7733         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7734
7735         if (!info->attrs[NL80211_ATTR_MAC])
7736                 return -EINVAL;
7737
7738         if (!info->attrs[NL80211_ATTR_PMKID])
7739                 return -EINVAL;
7740
7741         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7742         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7743
7744         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7745             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7746                 return -EOPNOTSUPP;
7747
7748         switch (info->genlhdr->cmd) {
7749         case NL80211_CMD_SET_PMKSA:
7750                 rdev_ops = rdev->ops->set_pmksa;
7751                 break;
7752         case NL80211_CMD_DEL_PMKSA:
7753                 rdev_ops = rdev->ops->del_pmksa;
7754                 break;
7755         default:
7756                 WARN_ON(1);
7757                 break;
7758         }
7759
7760         if (!rdev_ops)
7761                 return -EOPNOTSUPP;
7762
7763         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7764 }
7765
7766 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7767 {
7768         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7769         struct net_device *dev = info->user_ptr[1];
7770
7771         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7772             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7773                 return -EOPNOTSUPP;
7774
7775         if (!rdev->ops->flush_pmksa)
7776                 return -EOPNOTSUPP;
7777
7778         return rdev_flush_pmksa(rdev, dev);
7779 }
7780
7781 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7782 {
7783         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7784         struct net_device *dev = info->user_ptr[1];
7785         u8 action_code, dialog_token;
7786         u32 peer_capability = 0;
7787         u16 status_code;
7788         u8 *peer;
7789         bool initiator;
7790
7791         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7792             !rdev->ops->tdls_mgmt)
7793                 return -EOPNOTSUPP;
7794
7795         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7796             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7797             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7798             !info->attrs[NL80211_ATTR_IE] ||
7799             !info->attrs[NL80211_ATTR_MAC])
7800                 return -EINVAL;
7801
7802         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7803         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7804         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7805         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7806         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7807         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7808                 peer_capability =
7809                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7810
7811         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7812                               dialog_token, status_code, peer_capability,
7813                               initiator,
7814                               nla_data(info->attrs[NL80211_ATTR_IE]),
7815                               nla_len(info->attrs[NL80211_ATTR_IE]));
7816 }
7817
7818 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7819 {
7820         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7821         struct net_device *dev = info->user_ptr[1];
7822         enum nl80211_tdls_operation operation;
7823         u8 *peer;
7824
7825         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7826             !rdev->ops->tdls_oper)
7827                 return -EOPNOTSUPP;
7828
7829         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7830             !info->attrs[NL80211_ATTR_MAC])
7831                 return -EINVAL;
7832
7833         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7834         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7835
7836         return rdev_tdls_oper(rdev, dev, peer, operation);
7837 }
7838
7839 static int nl80211_remain_on_channel(struct sk_buff *skb,
7840                                      struct genl_info *info)
7841 {
7842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7843         struct wireless_dev *wdev = info->user_ptr[1];
7844         struct cfg80211_chan_def chandef;
7845         struct sk_buff *msg;
7846         void *hdr;
7847         u64 cookie;
7848         u32 duration;
7849         int err;
7850
7851         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7852             !info->attrs[NL80211_ATTR_DURATION])
7853                 return -EINVAL;
7854
7855         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7856
7857         if (!rdev->ops->remain_on_channel ||
7858             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7859                 return -EOPNOTSUPP;
7860
7861         /*
7862          * We should be on that channel for at least a minimum amount of
7863          * time (10ms) but no longer than the driver supports.
7864          */
7865         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7866             duration > rdev->wiphy.max_remain_on_channel_duration)
7867                 return -EINVAL;
7868
7869         err = nl80211_parse_chandef(rdev, info, &chandef);
7870         if (err)
7871                 return err;
7872
7873         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7874         if (!msg)
7875                 return -ENOMEM;
7876
7877         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7878                              NL80211_CMD_REMAIN_ON_CHANNEL);
7879         if (!hdr) {
7880                 err = -ENOBUFS;
7881                 goto free_msg;
7882         }
7883
7884         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
7885                                      duration, &cookie);
7886
7887         if (err)
7888                 goto free_msg;
7889
7890         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
7891                 goto nla_put_failure;
7892
7893         genlmsg_end(msg, hdr);
7894
7895         return genlmsg_reply(msg, info);
7896
7897  nla_put_failure:
7898         err = -ENOBUFS;
7899  free_msg:
7900         nlmsg_free(msg);
7901         return err;
7902 }
7903
7904 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
7905                                             struct genl_info *info)
7906 {
7907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7908         struct wireless_dev *wdev = info->user_ptr[1];
7909         u64 cookie;
7910
7911         if (!info->attrs[NL80211_ATTR_COOKIE])
7912                 return -EINVAL;
7913
7914         if (!rdev->ops->cancel_remain_on_channel)
7915                 return -EOPNOTSUPP;
7916
7917         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
7918
7919         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
7920 }
7921
7922 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
7923                            u8 *rates, u8 rates_len)
7924 {
7925         u8 i;
7926         u32 mask = 0;
7927
7928         for (i = 0; i < rates_len; i++) {
7929                 int rate = (rates[i] & 0x7f) * 5;
7930                 int ridx;
7931                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
7932                         struct ieee80211_rate *srate =
7933                                 &sband->bitrates[ridx];
7934                         if (rate == srate->bitrate) {
7935                                 mask |= 1 << ridx;
7936                                 break;
7937                         }
7938                 }
7939                 if (ridx == sband->n_bitrates)
7940                         return 0; /* rate not found */
7941         }
7942
7943         return mask;
7944 }
7945
7946 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
7947                                u8 *rates, u8 rates_len,
7948                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
7949 {
7950         u8 i;
7951
7952         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
7953
7954         for (i = 0; i < rates_len; i++) {
7955                 int ridx, rbit;
7956
7957                 ridx = rates[i] / 8;
7958                 rbit = BIT(rates[i] % 8);
7959
7960                 /* check validity */
7961                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
7962                         return false;
7963
7964                 /* check availability */
7965                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
7966                         mcs[ridx] |= rbit;
7967                 else
7968                         return false;
7969         }
7970
7971         return true;
7972 }
7973
7974 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
7975 {
7976         u16 mcs_mask = 0;
7977
7978         switch (vht_mcs_map) {
7979         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
7980                 break;
7981         case IEEE80211_VHT_MCS_SUPPORT_0_7:
7982                 mcs_mask = 0x00FF;
7983                 break;
7984         case IEEE80211_VHT_MCS_SUPPORT_0_8:
7985                 mcs_mask = 0x01FF;
7986                 break;
7987         case IEEE80211_VHT_MCS_SUPPORT_0_9:
7988                 mcs_mask = 0x03FF;
7989                 break;
7990         default:
7991                 break;
7992         }
7993
7994         return mcs_mask;
7995 }
7996
7997 static void vht_build_mcs_mask(u16 vht_mcs_map,
7998                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
7999 {
8000         u8 nss;
8001
8002         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8003                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8004                 vht_mcs_map >>= 2;
8005         }
8006 }
8007
8008 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8009                              struct nl80211_txrate_vht *txrate,
8010                              u16 mcs[NL80211_VHT_NSS_MAX])
8011 {
8012         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8013         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8014         u8 i;
8015
8016         if (!sband->vht_cap.vht_supported)
8017                 return false;
8018
8019         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8020
8021         /* Build vht_mcs_mask from VHT capabilities */
8022         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8023
8024         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8025                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8026                         mcs[i] = txrate->mcs[i];
8027                 else
8028                         return false;
8029         }
8030
8031         return true;
8032 }
8033
8034 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8035         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8036                                     .len = NL80211_MAX_SUPP_RATES },
8037         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8038                                 .len = NL80211_MAX_SUPP_HT_RATES },
8039         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8040         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8041 };
8042
8043 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8044                                        struct genl_info *info)
8045 {
8046         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8047         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8048         struct cfg80211_bitrate_mask mask;
8049         int rem, i;
8050         struct net_device *dev = info->user_ptr[1];
8051         struct nlattr *tx_rates;
8052         struct ieee80211_supported_band *sband;
8053         u16 vht_tx_mcs_map;
8054
8055         if (!rdev->ops->set_bitrate_mask)
8056                 return -EOPNOTSUPP;
8057
8058         memset(&mask, 0, sizeof(mask));
8059         /* Default to all rates enabled */
8060         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8061                 sband = rdev->wiphy.bands[i];
8062
8063                 if (!sband)
8064                         continue;
8065
8066                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8067                 memcpy(mask.control[i].ht_mcs,
8068                        sband->ht_cap.mcs.rx_mask,
8069                        sizeof(mask.control[i].ht_mcs));
8070
8071                 if (!sband->vht_cap.vht_supported)
8072                         continue;
8073
8074                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8075                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8076         }
8077
8078         /* if no rates are given set it back to the defaults */
8079         if (!info->attrs[NL80211_ATTR_TX_RATES])
8080                 goto out;
8081
8082         /*
8083          * The nested attribute uses enum nl80211_band as the index. This maps
8084          * directly to the enum ieee80211_band values used in cfg80211.
8085          */
8086         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8087         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8088                 enum ieee80211_band band = nla_type(tx_rates);
8089                 int err;
8090
8091                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8092                         return -EINVAL;
8093                 sband = rdev->wiphy.bands[band];
8094                 if (sband == NULL)
8095                         return -EINVAL;
8096                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8097                                 nla_len(tx_rates), nl80211_txattr_policy);
8098                 if (err)
8099                         return err;
8100                 if (tb[NL80211_TXRATE_LEGACY]) {
8101                         mask.control[band].legacy = rateset_to_mask(
8102                                 sband,
8103                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8104                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8105                         if ((mask.control[band].legacy == 0) &&
8106                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8107                                 return -EINVAL;
8108                 }
8109                 if (tb[NL80211_TXRATE_HT]) {
8110                         if (!ht_rateset_to_mask(
8111                                         sband,
8112                                         nla_data(tb[NL80211_TXRATE_HT]),
8113                                         nla_len(tb[NL80211_TXRATE_HT]),
8114                                         mask.control[band].ht_mcs))
8115                                 return -EINVAL;
8116                 }
8117                 if (tb[NL80211_TXRATE_VHT]) {
8118                         if (!vht_set_mcs_mask(
8119                                         sband,
8120                                         nla_data(tb[NL80211_TXRATE_VHT]),
8121                                         mask.control[band].vht_mcs))
8122                                 return -EINVAL;
8123                 }
8124                 if (tb[NL80211_TXRATE_GI]) {
8125                         mask.control[band].gi =
8126                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8127                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8128                                 return -EINVAL;
8129                 }
8130
8131                 if (mask.control[band].legacy == 0) {
8132                         /* don't allow empty legacy rates if HT or VHT
8133                          * are not even supported.
8134                          */
8135                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8136                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8137                                 return -EINVAL;
8138
8139                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8140                                 if (mask.control[band].ht_mcs[i])
8141                                         goto out;
8142
8143                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8144                                 if (mask.control[band].vht_mcs[i])
8145                                         goto out;
8146
8147                         /* legacy and mcs rates may not be both empty */
8148                         return -EINVAL;
8149                 }
8150         }
8151
8152 out:
8153         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8154 }
8155
8156 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8157 {
8158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8159         struct wireless_dev *wdev = info->user_ptr[1];
8160         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8161
8162         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8163                 return -EINVAL;
8164
8165         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8166                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8167
8168         switch (wdev->iftype) {
8169         case NL80211_IFTYPE_STATION:
8170         case NL80211_IFTYPE_ADHOC:
8171         case NL80211_IFTYPE_P2P_CLIENT:
8172         case NL80211_IFTYPE_AP:
8173         case NL80211_IFTYPE_AP_VLAN:
8174         case NL80211_IFTYPE_MESH_POINT:
8175         case NL80211_IFTYPE_P2P_GO:
8176         case NL80211_IFTYPE_P2P_DEVICE:
8177                 break;
8178         default:
8179                 return -EOPNOTSUPP;
8180         }
8181
8182         /* not much point in registering if we can't reply */
8183         if (!rdev->ops->mgmt_tx)
8184                 return -EOPNOTSUPP;
8185
8186         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8187                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8188                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8189 }
8190
8191 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8192 {
8193         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8194         struct wireless_dev *wdev = info->user_ptr[1];
8195         struct cfg80211_chan_def chandef;
8196         int err;
8197         void *hdr = NULL;
8198         u64 cookie;
8199         struct sk_buff *msg = NULL;
8200         struct cfg80211_mgmt_tx_params params = {
8201                 .dont_wait_for_ack =
8202                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8203         };
8204
8205         if (!info->attrs[NL80211_ATTR_FRAME])
8206                 return -EINVAL;
8207
8208         if (!rdev->ops->mgmt_tx)
8209                 return -EOPNOTSUPP;
8210
8211         switch (wdev->iftype) {
8212         case NL80211_IFTYPE_P2P_DEVICE:
8213                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8214                         return -EINVAL;
8215         case NL80211_IFTYPE_STATION:
8216         case NL80211_IFTYPE_ADHOC:
8217         case NL80211_IFTYPE_P2P_CLIENT:
8218         case NL80211_IFTYPE_AP:
8219         case NL80211_IFTYPE_AP_VLAN:
8220         case NL80211_IFTYPE_MESH_POINT:
8221         case NL80211_IFTYPE_P2P_GO:
8222                 break;
8223         default:
8224                 return -EOPNOTSUPP;
8225         }
8226
8227         if (info->attrs[NL80211_ATTR_DURATION]) {
8228                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8229                         return -EINVAL;
8230                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8231
8232                 /*
8233                  * We should wait on the channel for at least a minimum amount
8234                  * of time (10ms) but no longer than the driver supports.
8235                  */
8236                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8237                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8238                         return -EINVAL;
8239
8240         }
8241
8242         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8243
8244         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8245                 return -EINVAL;
8246
8247         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8248
8249         /* get the channel if any has been specified, otherwise pass NULL to
8250          * the driver. The latter will use the current one
8251          */
8252         chandef.chan = NULL;
8253         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8254                 err = nl80211_parse_chandef(rdev, info, &chandef);
8255                 if (err)
8256                         return err;
8257         }
8258
8259         if (!chandef.chan && params.offchan)
8260                 return -EINVAL;
8261
8262         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8263         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8264
8265         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8266                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8267                 int i;
8268
8269                 if (len % sizeof(u16))
8270                         return -EINVAL;
8271
8272                 params.n_csa_offsets = len / sizeof(u16);
8273                 params.csa_offsets =
8274                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8275
8276                 /* check that all the offsets fit the frame */
8277                 for (i = 0; i < params.n_csa_offsets; i++) {
8278                         if (params.csa_offsets[i] >= params.len)
8279                                 return -EINVAL;
8280                 }
8281         }
8282
8283         if (!params.dont_wait_for_ack) {
8284                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8285                 if (!msg)
8286                         return -ENOMEM;
8287
8288                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8289                                      NL80211_CMD_FRAME);
8290                 if (!hdr) {
8291                         err = -ENOBUFS;
8292                         goto free_msg;
8293                 }
8294         }
8295
8296         params.chan = chandef.chan;
8297         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8298         if (err)
8299                 goto free_msg;
8300
8301         if (msg) {
8302                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8303                         goto nla_put_failure;
8304
8305                 genlmsg_end(msg, hdr);
8306                 return genlmsg_reply(msg, info);
8307         }
8308
8309         return 0;
8310
8311  nla_put_failure:
8312         err = -ENOBUFS;
8313  free_msg:
8314         nlmsg_free(msg);
8315         return err;
8316 }
8317
8318 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8319 {
8320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8321         struct wireless_dev *wdev = info->user_ptr[1];
8322         u64 cookie;
8323
8324         if (!info->attrs[NL80211_ATTR_COOKIE])
8325                 return -EINVAL;
8326
8327         if (!rdev->ops->mgmt_tx_cancel_wait)
8328                 return -EOPNOTSUPP;
8329
8330         switch (wdev->iftype) {
8331         case NL80211_IFTYPE_STATION:
8332         case NL80211_IFTYPE_ADHOC:
8333         case NL80211_IFTYPE_P2P_CLIENT:
8334         case NL80211_IFTYPE_AP:
8335         case NL80211_IFTYPE_AP_VLAN:
8336         case NL80211_IFTYPE_P2P_GO:
8337         case NL80211_IFTYPE_P2P_DEVICE:
8338                 break;
8339         default:
8340                 return -EOPNOTSUPP;
8341         }
8342
8343         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8344
8345         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8346 }
8347
8348 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8349 {
8350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8351         struct wireless_dev *wdev;
8352         struct net_device *dev = info->user_ptr[1];
8353         u8 ps_state;
8354         bool state;
8355         int err;
8356
8357         if (!info->attrs[NL80211_ATTR_PS_STATE])
8358                 return -EINVAL;
8359
8360         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8361
8362         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8363                 return -EINVAL;
8364
8365         wdev = dev->ieee80211_ptr;
8366
8367         if (!rdev->ops->set_power_mgmt)
8368                 return -EOPNOTSUPP;
8369
8370         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8371
8372         if (state == wdev->ps)
8373                 return 0;
8374
8375         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8376         if (!err)
8377                 wdev->ps = state;
8378         return err;
8379 }
8380
8381 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8382 {
8383         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8384         enum nl80211_ps_state ps_state;
8385         struct wireless_dev *wdev;
8386         struct net_device *dev = info->user_ptr[1];
8387         struct sk_buff *msg;
8388         void *hdr;
8389         int err;
8390
8391         wdev = dev->ieee80211_ptr;
8392
8393         if (!rdev->ops->set_power_mgmt)
8394                 return -EOPNOTSUPP;
8395
8396         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8397         if (!msg)
8398                 return -ENOMEM;
8399
8400         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8401                              NL80211_CMD_GET_POWER_SAVE);
8402         if (!hdr) {
8403                 err = -ENOBUFS;
8404                 goto free_msg;
8405         }
8406
8407         if (wdev->ps)
8408                 ps_state = NL80211_PS_ENABLED;
8409         else
8410                 ps_state = NL80211_PS_DISABLED;
8411
8412         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8413                 goto nla_put_failure;
8414
8415         genlmsg_end(msg, hdr);
8416         return genlmsg_reply(msg, info);
8417
8418  nla_put_failure:
8419         err = -ENOBUFS;
8420  free_msg:
8421         nlmsg_free(msg);
8422         return err;
8423 }
8424
8425 static const struct nla_policy
8426 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8427         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8428         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8429         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8430         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8431         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8432         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8433 };
8434
8435 static int nl80211_set_cqm_txe(struct genl_info *info,
8436                                u32 rate, u32 pkts, u32 intvl)
8437 {
8438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8439         struct net_device *dev = info->user_ptr[1];
8440         struct wireless_dev *wdev = dev->ieee80211_ptr;
8441
8442         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8443                 return -EINVAL;
8444
8445         if (!rdev->ops->set_cqm_txe_config)
8446                 return -EOPNOTSUPP;
8447
8448         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8449             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8450                 return -EOPNOTSUPP;
8451
8452         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8453 }
8454
8455 static int nl80211_set_cqm_rssi(struct genl_info *info,
8456                                 s32 threshold, u32 hysteresis)
8457 {
8458         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8459         struct net_device *dev = info->user_ptr[1];
8460         struct wireless_dev *wdev = dev->ieee80211_ptr;
8461
8462         if (threshold > 0)
8463                 return -EINVAL;
8464
8465         /* disabling - hysteresis should also be zero then */
8466         if (threshold == 0)
8467                 hysteresis = 0;
8468
8469         if (!rdev->ops->set_cqm_rssi_config)
8470                 return -EOPNOTSUPP;
8471
8472         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8473             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8474                 return -EOPNOTSUPP;
8475
8476         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8477 }
8478
8479 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8480 {
8481         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8482         struct nlattr *cqm;
8483         int err;
8484
8485         cqm = info->attrs[NL80211_ATTR_CQM];
8486         if (!cqm)
8487                 return -EINVAL;
8488
8489         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8490                                nl80211_attr_cqm_policy);
8491         if (err)
8492                 return err;
8493
8494         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8495             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8496                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8497                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8498
8499                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8500         }
8501
8502         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8503             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8504             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8505                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8506                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8507                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8508
8509                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8510         }
8511
8512         return -EINVAL;
8513 }
8514
8515 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8516 {
8517         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8518         struct net_device *dev = info->user_ptr[1];
8519         struct ocb_setup setup = {};
8520         int err;
8521
8522         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8523         if (err)
8524                 return err;
8525
8526         return cfg80211_join_ocb(rdev, dev, &setup);
8527 }
8528
8529 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8530 {
8531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8532         struct net_device *dev = info->user_ptr[1];
8533
8534         return cfg80211_leave_ocb(rdev, dev);
8535 }
8536
8537 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8538 {
8539         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8540         struct net_device *dev = info->user_ptr[1];
8541         struct mesh_config cfg;
8542         struct mesh_setup setup;
8543         int err;
8544
8545         /* start with default */
8546         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8547         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8548
8549         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8550                 /* and parse parameters if given */
8551                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8552                 if (err)
8553                         return err;
8554         }
8555
8556         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8557             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8558                 return -EINVAL;
8559
8560         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8561         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8562
8563         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8564             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8565                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8566                         return -EINVAL;
8567
8568         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8569                 setup.beacon_interval =
8570                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8571                 if (setup.beacon_interval < 10 ||
8572                     setup.beacon_interval > 10000)
8573                         return -EINVAL;
8574         }
8575
8576         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8577                 setup.dtim_period =
8578                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8579                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8580                         return -EINVAL;
8581         }
8582
8583         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8584                 /* parse additional setup parameters if given */
8585                 err = nl80211_parse_mesh_setup(info, &setup);
8586                 if (err)
8587                         return err;
8588         }
8589
8590         if (setup.user_mpm)
8591                 cfg.auto_open_plinks = false;
8592
8593         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8594                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8595                 if (err)
8596                         return err;
8597         } else {
8598                 /* cfg80211_join_mesh() will sort it out */
8599                 setup.chandef.chan = NULL;
8600         }
8601
8602         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8603                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8604                 int n_rates =
8605                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8606                 struct ieee80211_supported_band *sband;
8607
8608                 if (!setup.chandef.chan)
8609                         return -EINVAL;
8610
8611                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8612
8613                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8614                                              &setup.basic_rates);
8615                 if (err)
8616                         return err;
8617         }
8618
8619         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8620 }
8621
8622 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8623 {
8624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8625         struct net_device *dev = info->user_ptr[1];
8626
8627         return cfg80211_leave_mesh(rdev, dev);
8628 }
8629
8630 #ifdef CONFIG_PM
8631 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8632                                         struct cfg80211_registered_device *rdev)
8633 {
8634         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8635         struct nlattr *nl_pats, *nl_pat;
8636         int i, pat_len;
8637
8638         if (!wowlan->n_patterns)
8639                 return 0;
8640
8641         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8642         if (!nl_pats)
8643                 return -ENOBUFS;
8644
8645         for (i = 0; i < wowlan->n_patterns; i++) {
8646                 nl_pat = nla_nest_start(msg, i + 1);
8647                 if (!nl_pat)
8648                         return -ENOBUFS;
8649                 pat_len = wowlan->patterns[i].pattern_len;
8650                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8651                             wowlan->patterns[i].mask) ||
8652                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8653                             wowlan->patterns[i].pattern) ||
8654                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8655                                 wowlan->patterns[i].pkt_offset))
8656                         return -ENOBUFS;
8657                 nla_nest_end(msg, nl_pat);
8658         }
8659         nla_nest_end(msg, nl_pats);
8660
8661         return 0;
8662 }
8663
8664 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8665                                    struct cfg80211_wowlan_tcp *tcp)
8666 {
8667         struct nlattr *nl_tcp;
8668
8669         if (!tcp)
8670                 return 0;
8671
8672         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8673         if (!nl_tcp)
8674                 return -ENOBUFS;
8675
8676         if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8677             nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8678             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8679             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8680             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8681             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8682                     tcp->payload_len, tcp->payload) ||
8683             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8684                         tcp->data_interval) ||
8685             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8686                     tcp->wake_len, tcp->wake_data) ||
8687             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8688                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8689                 return -ENOBUFS;
8690
8691         if (tcp->payload_seq.len &&
8692             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8693                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8694                 return -ENOBUFS;
8695
8696         if (tcp->payload_tok.len &&
8697             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8698                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8699                     &tcp->payload_tok))
8700                 return -ENOBUFS;
8701
8702         nla_nest_end(msg, nl_tcp);
8703
8704         return 0;
8705 }
8706
8707 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8708 {
8709         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8710         struct sk_buff *msg;
8711         void *hdr;
8712         u32 size = NLMSG_DEFAULT_SIZE;
8713
8714         if (!rdev->wiphy.wowlan)
8715                 return -EOPNOTSUPP;
8716
8717         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8718                 /* adjust size to have room for all the data */
8719                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8720                         rdev->wiphy.wowlan_config->tcp->payload_len +
8721                         rdev->wiphy.wowlan_config->tcp->wake_len +
8722                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8723         }
8724
8725         msg = nlmsg_new(size, GFP_KERNEL);
8726         if (!msg)
8727                 return -ENOMEM;
8728
8729         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8730                              NL80211_CMD_GET_WOWLAN);
8731         if (!hdr)
8732                 goto nla_put_failure;
8733
8734         if (rdev->wiphy.wowlan_config) {
8735                 struct nlattr *nl_wowlan;
8736
8737                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8738                 if (!nl_wowlan)
8739                         goto nla_put_failure;
8740
8741                 if ((rdev->wiphy.wowlan_config->any &&
8742                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8743                     (rdev->wiphy.wowlan_config->disconnect &&
8744                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8745                     (rdev->wiphy.wowlan_config->magic_pkt &&
8746                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8747                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8748                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8749                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8750                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8751                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8752                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8753                     (rdev->wiphy.wowlan_config->rfkill_release &&
8754                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8755                         goto nla_put_failure;
8756
8757                 if (nl80211_send_wowlan_patterns(msg, rdev))
8758                         goto nla_put_failure;
8759
8760                 if (nl80211_send_wowlan_tcp(msg,
8761                                             rdev->wiphy.wowlan_config->tcp))
8762                         goto nla_put_failure;
8763
8764                 nla_nest_end(msg, nl_wowlan);
8765         }
8766
8767         genlmsg_end(msg, hdr);
8768         return genlmsg_reply(msg, info);
8769
8770 nla_put_failure:
8771         nlmsg_free(msg);
8772         return -ENOBUFS;
8773 }
8774
8775 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8776                                     struct nlattr *attr,
8777                                     struct cfg80211_wowlan *trig)
8778 {
8779         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8780         struct cfg80211_wowlan_tcp *cfg;
8781         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8782         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8783         u32 size;
8784         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8785         int err, port;
8786
8787         if (!rdev->wiphy.wowlan->tcp)
8788                 return -EINVAL;
8789
8790         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8791                         nla_data(attr), nla_len(attr),
8792                         nl80211_wowlan_tcp_policy);
8793         if (err)
8794                 return err;
8795
8796         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8797             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8798             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8799             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8800             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8801             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8802             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8803             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8804                 return -EINVAL;
8805
8806         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8807         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8808                 return -EINVAL;
8809
8810         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8811                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8812             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8813                 return -EINVAL;
8814
8815         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8816         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8817                 return -EINVAL;
8818
8819         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8820         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8821                 return -EINVAL;
8822
8823         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8824                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8825
8826                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8827                 tokens_size = tokln - sizeof(*tok);
8828
8829                 if (!tok->len || tokens_size % tok->len)
8830                         return -EINVAL;
8831                 if (!rdev->wiphy.wowlan->tcp->tok)
8832                         return -EINVAL;
8833                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
8834                         return -EINVAL;
8835                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
8836                         return -EINVAL;
8837                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
8838                         return -EINVAL;
8839                 if (tok->offset + tok->len > data_size)
8840                         return -EINVAL;
8841         }
8842
8843         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
8844                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
8845                 if (!rdev->wiphy.wowlan->tcp->seq)
8846                         return -EINVAL;
8847                 if (seq->len == 0 || seq->len > 4)
8848                         return -EINVAL;
8849                 if (seq->len + seq->offset > data_size)
8850                         return -EINVAL;
8851         }
8852
8853         size = sizeof(*cfg);
8854         size += data_size;
8855         size += wake_size + wake_mask_size;
8856         size += tokens_size;
8857
8858         cfg = kzalloc(size, GFP_KERNEL);
8859         if (!cfg)
8860                 return -ENOMEM;
8861         cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
8862         cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
8863         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
8864                ETH_ALEN);
8865         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
8866                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
8867         else
8868                 port = 0;
8869 #ifdef CONFIG_INET
8870         /* allocate a socket and port for it and use it */
8871         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
8872                             IPPROTO_TCP, &cfg->sock, 1);
8873         if (err) {
8874                 kfree(cfg);
8875                 return err;
8876         }
8877         if (inet_csk_get_port(cfg->sock->sk, port)) {
8878                 sock_release(cfg->sock);
8879                 kfree(cfg);
8880                 return -EADDRINUSE;
8881         }
8882         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
8883 #else
8884         if (!port) {
8885                 kfree(cfg);
8886                 return -EINVAL;
8887         }
8888         cfg->src_port = port;
8889 #endif
8890
8891         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
8892         cfg->payload_len = data_size;
8893         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
8894         memcpy((void *)cfg->payload,
8895                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
8896                data_size);
8897         if (seq)
8898                 cfg->payload_seq = *seq;
8899         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
8900         cfg->wake_len = wake_size;
8901         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
8902         memcpy((void *)cfg->wake_data,
8903                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
8904                wake_size);
8905         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
8906                          data_size + wake_size;
8907         memcpy((void *)cfg->wake_mask,
8908                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
8909                wake_mask_size);
8910         if (tok) {
8911                 cfg->tokens_size = tokens_size;
8912                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
8913         }
8914
8915         trig->tcp = cfg;
8916
8917         return 0;
8918 }
8919
8920 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
8921                                    const struct wiphy_wowlan_support *wowlan,
8922                                    struct nlattr *attr,
8923                                    struct cfg80211_wowlan *trig)
8924 {
8925         struct nlattr **tb;
8926         int err;
8927
8928         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
8929         if (!tb)
8930                 return -ENOMEM;
8931
8932         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
8933                 err = -EOPNOTSUPP;
8934                 goto out;
8935         }
8936
8937         err = nla_parse(tb, NL80211_ATTR_MAX,
8938                         nla_data(attr), nla_len(attr),
8939                         nl80211_policy);
8940         if (err)
8941                 goto out;
8942
8943         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
8944         err = PTR_ERR_OR_ZERO(trig->nd_config);
8945         if (err)
8946                 trig->nd_config = NULL;
8947
8948 out:
8949         kfree(tb);
8950         return err;
8951 }
8952
8953 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
8954 {
8955         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8956         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
8957         struct cfg80211_wowlan new_triggers = {};
8958         struct cfg80211_wowlan *ntrig;
8959         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
8960         int err, i;
8961         bool prev_enabled = rdev->wiphy.wowlan_config;
8962
8963         if (!wowlan)
8964                 return -EOPNOTSUPP;
8965
8966         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
8967                 cfg80211_rdev_free_wowlan(rdev);
8968                 rdev->wiphy.wowlan_config = NULL;
8969                 goto set_wakeup;
8970         }
8971
8972         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
8973                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8974                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
8975                         nl80211_wowlan_policy);
8976         if (err)
8977                 return err;
8978
8979         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
8980                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
8981                         return -EINVAL;
8982                 new_triggers.any = true;
8983         }
8984
8985         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
8986                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
8987                         return -EINVAL;
8988                 new_triggers.disconnect = true;
8989         }
8990
8991         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
8992                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
8993                         return -EINVAL;
8994                 new_triggers.magic_pkt = true;
8995         }
8996
8997         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
8998                 return -EINVAL;
8999
9000         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9001                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9002                         return -EINVAL;
9003                 new_triggers.gtk_rekey_failure = true;
9004         }
9005
9006         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9007                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9008                         return -EINVAL;
9009                 new_triggers.eap_identity_req = true;
9010         }
9011
9012         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9013                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9014                         return -EINVAL;
9015                 new_triggers.four_way_handshake = true;
9016         }
9017
9018         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9019                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9020                         return -EINVAL;
9021                 new_triggers.rfkill_release = true;
9022         }
9023
9024         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9025                 struct nlattr *pat;
9026                 int n_patterns = 0;
9027                 int rem, pat_len, mask_len, pkt_offset;
9028                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9029
9030                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9031                                     rem)
9032                         n_patterns++;
9033                 if (n_patterns > wowlan->n_patterns)
9034                         return -EINVAL;
9035
9036                 new_triggers.patterns = kcalloc(n_patterns,
9037                                                 sizeof(new_triggers.patterns[0]),
9038                                                 GFP_KERNEL);
9039                 if (!new_triggers.patterns)
9040                         return -ENOMEM;
9041
9042                 new_triggers.n_patterns = n_patterns;
9043                 i = 0;
9044
9045                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9046                                     rem) {
9047                         u8 *mask_pat;
9048
9049                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9050                                   nla_len(pat), NULL);
9051                         err = -EINVAL;
9052                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9053                             !pat_tb[NL80211_PKTPAT_PATTERN])
9054                                 goto error;
9055                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9056                         mask_len = DIV_ROUND_UP(pat_len, 8);
9057                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9058                                 goto error;
9059                         if (pat_len > wowlan->pattern_max_len ||
9060                             pat_len < wowlan->pattern_min_len)
9061                                 goto error;
9062
9063                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9064                                 pkt_offset = 0;
9065                         else
9066                                 pkt_offset = nla_get_u32(
9067                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9068                         if (pkt_offset > wowlan->max_pkt_offset)
9069                                 goto error;
9070                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9071
9072                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9073                         if (!mask_pat) {
9074                                 err = -ENOMEM;
9075                                 goto error;
9076                         }
9077                         new_triggers.patterns[i].mask = mask_pat;
9078                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9079                                mask_len);
9080                         mask_pat += mask_len;
9081                         new_triggers.patterns[i].pattern = mask_pat;
9082                         new_triggers.patterns[i].pattern_len = pat_len;
9083                         memcpy(mask_pat,
9084                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9085                                pat_len);
9086                         i++;
9087                 }
9088         }
9089
9090         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9091                 err = nl80211_parse_wowlan_tcp(
9092                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9093                         &new_triggers);
9094                 if (err)
9095                         goto error;
9096         }
9097
9098         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9099                 err = nl80211_parse_wowlan_nd(
9100                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9101                         &new_triggers);
9102                 if (err)
9103                         goto error;
9104         }
9105
9106         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9107         if (!ntrig) {
9108                 err = -ENOMEM;
9109                 goto error;
9110         }
9111         cfg80211_rdev_free_wowlan(rdev);
9112         rdev->wiphy.wowlan_config = ntrig;
9113
9114  set_wakeup:
9115         if (rdev->ops->set_wakeup &&
9116             prev_enabled != !!rdev->wiphy.wowlan_config)
9117                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9118
9119         return 0;
9120  error:
9121         for (i = 0; i < new_triggers.n_patterns; i++)
9122                 kfree(new_triggers.patterns[i].mask);
9123         kfree(new_triggers.patterns);
9124         if (new_triggers.tcp && new_triggers.tcp->sock)
9125                 sock_release(new_triggers.tcp->sock);
9126         kfree(new_triggers.tcp);
9127         return err;
9128 }
9129 #endif
9130
9131 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9132                                        struct cfg80211_registered_device *rdev)
9133 {
9134         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9135         int i, j, pat_len;
9136         struct cfg80211_coalesce_rules *rule;
9137
9138         if (!rdev->coalesce->n_rules)
9139                 return 0;
9140
9141         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9142         if (!nl_rules)
9143                 return -ENOBUFS;
9144
9145         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9146                 nl_rule = nla_nest_start(msg, i + 1);
9147                 if (!nl_rule)
9148                         return -ENOBUFS;
9149
9150                 rule = &rdev->coalesce->rules[i];
9151                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9152                                 rule->delay))
9153                         return -ENOBUFS;
9154
9155                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9156                                 rule->condition))
9157                         return -ENOBUFS;
9158
9159                 nl_pats = nla_nest_start(msg,
9160                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9161                 if (!nl_pats)
9162                         return -ENOBUFS;
9163
9164                 for (j = 0; j < rule->n_patterns; j++) {
9165                         nl_pat = nla_nest_start(msg, j + 1);
9166                         if (!nl_pat)
9167                                 return -ENOBUFS;
9168                         pat_len = rule->patterns[j].pattern_len;
9169                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9170                                     DIV_ROUND_UP(pat_len, 8),
9171                                     rule->patterns[j].mask) ||
9172                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9173                                     rule->patterns[j].pattern) ||
9174                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9175                                         rule->patterns[j].pkt_offset))
9176                                 return -ENOBUFS;
9177                         nla_nest_end(msg, nl_pat);
9178                 }
9179                 nla_nest_end(msg, nl_pats);
9180                 nla_nest_end(msg, nl_rule);
9181         }
9182         nla_nest_end(msg, nl_rules);
9183
9184         return 0;
9185 }
9186
9187 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9188 {
9189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9190         struct sk_buff *msg;
9191         void *hdr;
9192
9193         if (!rdev->wiphy.coalesce)
9194                 return -EOPNOTSUPP;
9195
9196         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9197         if (!msg)
9198                 return -ENOMEM;
9199
9200         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9201                              NL80211_CMD_GET_COALESCE);
9202         if (!hdr)
9203                 goto nla_put_failure;
9204
9205         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9206                 goto nla_put_failure;
9207
9208         genlmsg_end(msg, hdr);
9209         return genlmsg_reply(msg, info);
9210
9211 nla_put_failure:
9212         nlmsg_free(msg);
9213         return -ENOBUFS;
9214 }
9215
9216 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9217 {
9218         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9219         int i, j;
9220         struct cfg80211_coalesce_rules *rule;
9221
9222         if (!coalesce)
9223                 return;
9224
9225         for (i = 0; i < coalesce->n_rules; i++) {
9226                 rule = &coalesce->rules[i];
9227                 for (j = 0; j < rule->n_patterns; j++)
9228                         kfree(rule->patterns[j].mask);
9229                 kfree(rule->patterns);
9230         }
9231         kfree(coalesce->rules);
9232         kfree(coalesce);
9233         rdev->coalesce = NULL;
9234 }
9235
9236 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9237                                        struct nlattr *rule,
9238                                        struct cfg80211_coalesce_rules *new_rule)
9239 {
9240         int err, i;
9241         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9242         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9243         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9244         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9245
9246         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9247                         nla_len(rule), nl80211_coalesce_policy);
9248         if (err)
9249                 return err;
9250
9251         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9252                 new_rule->delay =
9253                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9254         if (new_rule->delay > coalesce->max_delay)
9255                 return -EINVAL;
9256
9257         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9258                 new_rule->condition =
9259                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9260         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9261             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9262                 return -EINVAL;
9263
9264         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9265                 return -EINVAL;
9266
9267         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9268                             rem)
9269                 n_patterns++;
9270         if (n_patterns > coalesce->n_patterns)
9271                 return -EINVAL;
9272
9273         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9274                                      GFP_KERNEL);
9275         if (!new_rule->patterns)
9276                 return -ENOMEM;
9277
9278         new_rule->n_patterns = n_patterns;
9279         i = 0;
9280
9281         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9282                             rem) {
9283                 u8 *mask_pat;
9284
9285                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9286                           nla_len(pat), NULL);
9287                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9288                     !pat_tb[NL80211_PKTPAT_PATTERN])
9289                         return -EINVAL;
9290                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9291                 mask_len = DIV_ROUND_UP(pat_len, 8);
9292                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9293                         return -EINVAL;
9294                 if (pat_len > coalesce->pattern_max_len ||
9295                     pat_len < coalesce->pattern_min_len)
9296                         return -EINVAL;
9297
9298                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9299                         pkt_offset = 0;
9300                 else
9301                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9302                 if (pkt_offset > coalesce->max_pkt_offset)
9303                         return -EINVAL;
9304                 new_rule->patterns[i].pkt_offset = pkt_offset;
9305
9306                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9307                 if (!mask_pat)
9308                         return -ENOMEM;
9309
9310                 new_rule->patterns[i].mask = mask_pat;
9311                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9312                        mask_len);
9313
9314                 mask_pat += mask_len;
9315                 new_rule->patterns[i].pattern = mask_pat;
9316                 new_rule->patterns[i].pattern_len = pat_len;
9317                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9318                        pat_len);
9319                 i++;
9320         }
9321
9322         return 0;
9323 }
9324
9325 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9326 {
9327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9328         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9329         struct cfg80211_coalesce new_coalesce = {};
9330         struct cfg80211_coalesce *n_coalesce;
9331         int err, rem_rule, n_rules = 0, i, j;
9332         struct nlattr *rule;
9333         struct cfg80211_coalesce_rules *tmp_rule;
9334
9335         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9336                 return -EOPNOTSUPP;
9337
9338         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9339                 cfg80211_rdev_free_coalesce(rdev);
9340                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9341                 return 0;
9342         }
9343
9344         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9345                             rem_rule)
9346                 n_rules++;
9347         if (n_rules > coalesce->n_rules)
9348                 return -EINVAL;
9349
9350         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9351                                      GFP_KERNEL);
9352         if (!new_coalesce.rules)
9353                 return -ENOMEM;
9354
9355         new_coalesce.n_rules = n_rules;
9356         i = 0;
9357
9358         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9359                             rem_rule) {
9360                 err = nl80211_parse_coalesce_rule(rdev, rule,
9361                                                   &new_coalesce.rules[i]);
9362                 if (err)
9363                         goto error;
9364
9365                 i++;
9366         }
9367
9368         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9369         if (err)
9370                 goto error;
9371
9372         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9373         if (!n_coalesce) {
9374                 err = -ENOMEM;
9375                 goto error;
9376         }
9377         cfg80211_rdev_free_coalesce(rdev);
9378         rdev->coalesce = n_coalesce;
9379
9380         return 0;
9381 error:
9382         for (i = 0; i < new_coalesce.n_rules; i++) {
9383                 tmp_rule = &new_coalesce.rules[i];
9384                 for (j = 0; j < tmp_rule->n_patterns; j++)
9385                         kfree(tmp_rule->patterns[j].mask);
9386                 kfree(tmp_rule->patterns);
9387         }
9388         kfree(new_coalesce.rules);
9389
9390         return err;
9391 }
9392
9393 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9394 {
9395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9396         struct net_device *dev = info->user_ptr[1];
9397         struct wireless_dev *wdev = dev->ieee80211_ptr;
9398         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9399         struct cfg80211_gtk_rekey_data rekey_data;
9400         int err;
9401
9402         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9403                 return -EINVAL;
9404
9405         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9406                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9407                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9408                         nl80211_rekey_policy);
9409         if (err)
9410                 return err;
9411
9412         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9413                 return -ERANGE;
9414         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9415                 return -ERANGE;
9416         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9417                 return -ERANGE;
9418
9419         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9420         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9421         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9422
9423         wdev_lock(wdev);
9424         if (!wdev->current_bss) {
9425                 err = -ENOTCONN;
9426                 goto out;
9427         }
9428
9429         if (!rdev->ops->set_rekey_data) {
9430                 err = -EOPNOTSUPP;
9431                 goto out;
9432         }
9433
9434         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9435  out:
9436         wdev_unlock(wdev);
9437         return err;
9438 }
9439
9440 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9441                                              struct genl_info *info)
9442 {
9443         struct net_device *dev = info->user_ptr[1];
9444         struct wireless_dev *wdev = dev->ieee80211_ptr;
9445
9446         if (wdev->iftype != NL80211_IFTYPE_AP &&
9447             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9448                 return -EINVAL;
9449
9450         if (wdev->ap_unexpected_nlportid)
9451                 return -EBUSY;
9452
9453         wdev->ap_unexpected_nlportid = info->snd_portid;
9454         return 0;
9455 }
9456
9457 static int nl80211_probe_client(struct sk_buff *skb,
9458                                 struct genl_info *info)
9459 {
9460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9461         struct net_device *dev = info->user_ptr[1];
9462         struct wireless_dev *wdev = dev->ieee80211_ptr;
9463         struct sk_buff *msg;
9464         void *hdr;
9465         const u8 *addr;
9466         u64 cookie;
9467         int err;
9468
9469         if (wdev->iftype != NL80211_IFTYPE_AP &&
9470             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9471                 return -EOPNOTSUPP;
9472
9473         if (!info->attrs[NL80211_ATTR_MAC])
9474                 return -EINVAL;
9475
9476         if (!rdev->ops->probe_client)
9477                 return -EOPNOTSUPP;
9478
9479         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9480         if (!msg)
9481                 return -ENOMEM;
9482
9483         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9484                              NL80211_CMD_PROBE_CLIENT);
9485         if (!hdr) {
9486                 err = -ENOBUFS;
9487                 goto free_msg;
9488         }
9489
9490         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9491
9492         err = rdev_probe_client(rdev, dev, addr, &cookie);
9493         if (err)
9494                 goto free_msg;
9495
9496         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9497                 goto nla_put_failure;
9498
9499         genlmsg_end(msg, hdr);
9500
9501         return genlmsg_reply(msg, info);
9502
9503  nla_put_failure:
9504         err = -ENOBUFS;
9505  free_msg:
9506         nlmsg_free(msg);
9507         return err;
9508 }
9509
9510 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9511 {
9512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9513         struct cfg80211_beacon_registration *reg, *nreg;
9514         int rv;
9515
9516         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9517                 return -EOPNOTSUPP;
9518
9519         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9520         if (!nreg)
9521                 return -ENOMEM;
9522
9523         /* First, check if already registered. */
9524         spin_lock_bh(&rdev->beacon_registrations_lock);
9525         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9526                 if (reg->nlportid == info->snd_portid) {
9527                         rv = -EALREADY;
9528                         goto out_err;
9529                 }
9530         }
9531         /* Add it to the list */
9532         nreg->nlportid = info->snd_portid;
9533         list_add(&nreg->list, &rdev->beacon_registrations);
9534
9535         spin_unlock_bh(&rdev->beacon_registrations_lock);
9536
9537         return 0;
9538 out_err:
9539         spin_unlock_bh(&rdev->beacon_registrations_lock);
9540         kfree(nreg);
9541         return rv;
9542 }
9543
9544 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9545 {
9546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9547         struct wireless_dev *wdev = info->user_ptr[1];
9548         int err;
9549
9550         if (!rdev->ops->start_p2p_device)
9551                 return -EOPNOTSUPP;
9552
9553         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9554                 return -EOPNOTSUPP;
9555
9556         if (wdev->p2p_started)
9557                 return 0;
9558
9559         if (rfkill_blocked(rdev->rfkill))
9560                 return -ERFKILL;
9561
9562         err = rdev_start_p2p_device(rdev, wdev);
9563         if (err)
9564                 return err;
9565
9566         wdev->p2p_started = true;
9567         rdev->opencount++;
9568
9569         return 0;
9570 }
9571
9572 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9573 {
9574         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9575         struct wireless_dev *wdev = info->user_ptr[1];
9576
9577         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9578                 return -EOPNOTSUPP;
9579
9580         if (!rdev->ops->stop_p2p_device)
9581                 return -EOPNOTSUPP;
9582
9583         cfg80211_stop_p2p_device(rdev, wdev);
9584
9585         return 0;
9586 }
9587
9588 static int nl80211_get_protocol_features(struct sk_buff *skb,
9589                                          struct genl_info *info)
9590 {
9591         void *hdr;
9592         struct sk_buff *msg;
9593
9594         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9595         if (!msg)
9596                 return -ENOMEM;
9597
9598         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9599                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9600         if (!hdr)
9601                 goto nla_put_failure;
9602
9603         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9604                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9605                 goto nla_put_failure;
9606
9607         genlmsg_end(msg, hdr);
9608         return genlmsg_reply(msg, info);
9609
9610  nla_put_failure:
9611         kfree_skb(msg);
9612         return -ENOBUFS;
9613 }
9614
9615 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9616 {
9617         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9618         struct cfg80211_update_ft_ies_params ft_params;
9619         struct net_device *dev = info->user_ptr[1];
9620
9621         if (!rdev->ops->update_ft_ies)
9622                 return -EOPNOTSUPP;
9623
9624         if (!info->attrs[NL80211_ATTR_MDID] ||
9625             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9626                 return -EINVAL;
9627
9628         memset(&ft_params, 0, sizeof(ft_params));
9629         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9630         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9631         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9632
9633         return rdev_update_ft_ies(rdev, dev, &ft_params);
9634 }
9635
9636 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9637                                        struct genl_info *info)
9638 {
9639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9640         struct wireless_dev *wdev = info->user_ptr[1];
9641         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9642         u16 duration;
9643         int ret;
9644
9645         if (!rdev->ops->crit_proto_start)
9646                 return -EOPNOTSUPP;
9647
9648         if (WARN_ON(!rdev->ops->crit_proto_stop))
9649                 return -EINVAL;
9650
9651         if (rdev->crit_proto_nlportid)
9652                 return -EBUSY;
9653
9654         /* determine protocol if provided */
9655         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9656                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9657
9658         if (proto >= NUM_NL80211_CRIT_PROTO)
9659                 return -EINVAL;
9660
9661         /* timeout must be provided */
9662         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9663                 return -EINVAL;
9664
9665         duration =
9666                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9667
9668         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9669                 return -ERANGE;
9670
9671         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9672         if (!ret)
9673                 rdev->crit_proto_nlportid = info->snd_portid;
9674
9675         return ret;
9676 }
9677
9678 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9679                                       struct genl_info *info)
9680 {
9681         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9682         struct wireless_dev *wdev = info->user_ptr[1];
9683
9684         if (!rdev->ops->crit_proto_stop)
9685                 return -EOPNOTSUPP;
9686
9687         if (rdev->crit_proto_nlportid) {
9688                 rdev->crit_proto_nlportid = 0;
9689                 rdev_crit_proto_stop(rdev, wdev);
9690         }
9691         return 0;
9692 }
9693
9694 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9695 {
9696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9697         struct wireless_dev *wdev =
9698                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9699         int i, err;
9700         u32 vid, subcmd;
9701
9702         if (!rdev->wiphy.vendor_commands)
9703                 return -EOPNOTSUPP;
9704
9705         if (IS_ERR(wdev)) {
9706                 err = PTR_ERR(wdev);
9707                 if (err != -EINVAL)
9708                         return err;
9709                 wdev = NULL;
9710         } else if (wdev->wiphy != &rdev->wiphy) {
9711                 return -EINVAL;
9712         }
9713
9714         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9715             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9716                 return -EINVAL;
9717
9718         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9719         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9720         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9721                 const struct wiphy_vendor_command *vcmd;
9722                 void *data = NULL;
9723                 int len = 0;
9724
9725                 vcmd = &rdev->wiphy.vendor_commands[i];
9726
9727                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9728                         continue;
9729
9730                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9731                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9732                         if (!wdev)
9733                                 return -EINVAL;
9734                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9735                             !wdev->netdev)
9736                                 return -EINVAL;
9737
9738                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9739                                 if (wdev->netdev &&
9740                                     !netif_running(wdev->netdev))
9741                                         return -ENETDOWN;
9742                                 if (!wdev->netdev && !wdev->p2p_started)
9743                                         return -ENETDOWN;
9744                         }
9745                 } else {
9746                         wdev = NULL;
9747                 }
9748
9749                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9750                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9751                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9752                 }
9753
9754                 rdev->cur_cmd_info = info;
9755                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9756                                                           data, len);
9757                 rdev->cur_cmd_info = NULL;
9758                 return err;
9759         }
9760
9761         return -EOPNOTSUPP;
9762 }
9763
9764 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9765                                            enum nl80211_commands cmd,
9766                                            enum nl80211_attrs attr,
9767                                            int approxlen)
9768 {
9769         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9770
9771         if (WARN_ON(!rdev->cur_cmd_info))
9772                 return NULL;
9773
9774         return __cfg80211_alloc_vendor_skb(rdev, approxlen,
9775                                            rdev->cur_cmd_info->snd_portid,
9776                                            rdev->cur_cmd_info->snd_seq,
9777                                            cmd, attr, NULL, GFP_KERNEL);
9778 }
9779 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9780
9781 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9782 {
9783         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9784         void *hdr = ((void **)skb->cb)[1];
9785         struct nlattr *data = ((void **)skb->cb)[2];
9786
9787         /* clear CB data for netlink core to own from now on */
9788         memset(skb->cb, 0, sizeof(skb->cb));
9789
9790         if (WARN_ON(!rdev->cur_cmd_info)) {
9791                 kfree_skb(skb);
9792                 return -EINVAL;
9793         }
9794
9795         nla_nest_end(skb, data);
9796         genlmsg_end(skb, hdr);
9797         return genlmsg_reply(skb, rdev->cur_cmd_info);
9798 }
9799 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9800
9801
9802 static int nl80211_set_qos_map(struct sk_buff *skb,
9803                                struct genl_info *info)
9804 {
9805         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9806         struct cfg80211_qos_map *qos_map = NULL;
9807         struct net_device *dev = info->user_ptr[1];
9808         u8 *pos, len, num_des, des_len, des;
9809         int ret;
9810
9811         if (!rdev->ops->set_qos_map)
9812                 return -EOPNOTSUPP;
9813
9814         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
9815                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
9816                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
9817
9818                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
9819                     len > IEEE80211_QOS_MAP_LEN_MAX)
9820                         return -EINVAL;
9821
9822                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
9823                 if (!qos_map)
9824                         return -ENOMEM;
9825
9826                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
9827                 if (num_des) {
9828                         des_len = num_des *
9829                                 sizeof(struct cfg80211_dscp_exception);
9830                         memcpy(qos_map->dscp_exception, pos, des_len);
9831                         qos_map->num_des = num_des;
9832                         for (des = 0; des < num_des; des++) {
9833                                 if (qos_map->dscp_exception[des].up > 7) {
9834                                         kfree(qos_map);
9835                                         return -EINVAL;
9836                                 }
9837                         }
9838                         pos += des_len;
9839                 }
9840                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
9841         }
9842
9843         wdev_lock(dev->ieee80211_ptr);
9844         ret = nl80211_key_allowed(dev->ieee80211_ptr);
9845         if (!ret)
9846                 ret = rdev_set_qos_map(rdev, dev, qos_map);
9847         wdev_unlock(dev->ieee80211_ptr);
9848
9849         kfree(qos_map);
9850         return ret;
9851 }
9852
9853 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
9854 {
9855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9856         struct net_device *dev = info->user_ptr[1];
9857         struct wireless_dev *wdev = dev->ieee80211_ptr;
9858         const u8 *peer;
9859         u8 tsid, up;
9860         u16 admitted_time = 0;
9861         int err;
9862
9863         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
9864                 return -EOPNOTSUPP;
9865
9866         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
9867             !info->attrs[NL80211_ATTR_USER_PRIO])
9868                 return -EINVAL;
9869
9870         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9871         if (tsid >= IEEE80211_NUM_TIDS)
9872                 return -EINVAL;
9873
9874         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
9875         if (up >= IEEE80211_NUM_UPS)
9876                 return -EINVAL;
9877
9878         /* WMM uses TIDs 0-7 even for TSPEC */
9879         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
9880                 /* TODO: handle 802.11 TSPEC/admission control
9881                  * need more attributes for that (e.g. BA session requirement);
9882                  * change the WMM adminssion test above to allow both then
9883                  */
9884                 return -EINVAL;
9885         }
9886
9887         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9888
9889         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
9890                 admitted_time =
9891                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
9892                 if (!admitted_time)
9893                         return -EINVAL;
9894         }
9895
9896         wdev_lock(wdev);
9897         switch (wdev->iftype) {
9898         case NL80211_IFTYPE_STATION:
9899         case NL80211_IFTYPE_P2P_CLIENT:
9900                 if (wdev->current_bss)
9901                         break;
9902                 err = -ENOTCONN;
9903                 goto out;
9904         default:
9905                 err = -EOPNOTSUPP;
9906                 goto out;
9907         }
9908
9909         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
9910
9911  out:
9912         wdev_unlock(wdev);
9913         return err;
9914 }
9915
9916 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
9917 {
9918         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9919         struct net_device *dev = info->user_ptr[1];
9920         struct wireless_dev *wdev = dev->ieee80211_ptr;
9921         const u8 *peer;
9922         u8 tsid;
9923         int err;
9924
9925         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
9926                 return -EINVAL;
9927
9928         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
9929         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
9930
9931         wdev_lock(wdev);
9932         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
9933         wdev_unlock(wdev);
9934
9935         return err;
9936 }
9937
9938 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
9939                                        struct genl_info *info)
9940 {
9941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9942         struct net_device *dev = info->user_ptr[1];
9943         struct wireless_dev *wdev = dev->ieee80211_ptr;
9944         struct cfg80211_chan_def chandef = {};
9945         const u8 *addr;
9946         u8 oper_class;
9947         int err;
9948
9949         if (!rdev->ops->tdls_channel_switch ||
9950             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
9951                 return -EOPNOTSUPP;
9952
9953         switch (dev->ieee80211_ptr->iftype) {
9954         case NL80211_IFTYPE_STATION:
9955         case NL80211_IFTYPE_P2P_CLIENT:
9956                 break;
9957         default:
9958                 return -EOPNOTSUPP;
9959         }
9960
9961         if (!info->attrs[NL80211_ATTR_MAC] ||
9962             !info->attrs[NL80211_ATTR_OPER_CLASS])
9963                 return -EINVAL;
9964
9965         err = nl80211_parse_chandef(rdev, info, &chandef);
9966         if (err)
9967                 return err;
9968
9969         /*
9970          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
9971          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
9972          * specification is not defined for them.
9973          */
9974         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
9975             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
9976             chandef.width != NL80211_CHAN_WIDTH_20)
9977                 return -EINVAL;
9978
9979         /* we will be active on the TDLS link */
9980         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
9981                 return -EINVAL;
9982
9983         /* don't allow switching to DFS channels */
9984         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
9985                 return -EINVAL;
9986
9987         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9988         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
9989
9990         wdev_lock(wdev);
9991         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
9992         wdev_unlock(wdev);
9993
9994         return err;
9995 }
9996
9997 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
9998                                               struct genl_info *info)
9999 {
10000         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10001         struct net_device *dev = info->user_ptr[1];
10002         struct wireless_dev *wdev = dev->ieee80211_ptr;
10003         const u8 *addr;
10004
10005         if (!rdev->ops->tdls_channel_switch ||
10006             !rdev->ops->tdls_cancel_channel_switch ||
10007             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10008                 return -EOPNOTSUPP;
10009
10010         switch (dev->ieee80211_ptr->iftype) {
10011         case NL80211_IFTYPE_STATION:
10012         case NL80211_IFTYPE_P2P_CLIENT:
10013                 break;
10014         default:
10015                 return -EOPNOTSUPP;
10016         }
10017
10018         if (!info->attrs[NL80211_ATTR_MAC])
10019                 return -EINVAL;
10020
10021         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10022
10023         wdev_lock(wdev);
10024         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10025         wdev_unlock(wdev);
10026
10027         return 0;
10028 }
10029
10030 #define NL80211_FLAG_NEED_WIPHY         0x01
10031 #define NL80211_FLAG_NEED_NETDEV        0x02
10032 #define NL80211_FLAG_NEED_RTNL          0x04
10033 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10034 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10035                                          NL80211_FLAG_CHECK_NETDEV_UP)
10036 #define NL80211_FLAG_NEED_WDEV          0x10
10037 /* If a netdev is associated, it must be UP, P2P must be started */
10038 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10039                                          NL80211_FLAG_CHECK_NETDEV_UP)
10040 #define NL80211_FLAG_CLEAR_SKB          0x20
10041
10042 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10043                             struct genl_info *info)
10044 {
10045         struct cfg80211_registered_device *rdev;
10046         struct wireless_dev *wdev;
10047         struct net_device *dev;
10048         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10049
10050         if (rtnl)
10051                 rtnl_lock();
10052
10053         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10054                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10055                 if (IS_ERR(rdev)) {
10056                         if (rtnl)
10057                                 rtnl_unlock();
10058                         return PTR_ERR(rdev);
10059                 }
10060                 info->user_ptr[0] = rdev;
10061         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10062                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10063                 ASSERT_RTNL();
10064
10065                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10066                                                   info->attrs);
10067                 if (IS_ERR(wdev)) {
10068                         if (rtnl)
10069                                 rtnl_unlock();
10070                         return PTR_ERR(wdev);
10071                 }
10072
10073                 dev = wdev->netdev;
10074                 rdev = wiphy_to_rdev(wdev->wiphy);
10075
10076                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10077                         if (!dev) {
10078                                 if (rtnl)
10079                                         rtnl_unlock();
10080                                 return -EINVAL;
10081                         }
10082
10083                         info->user_ptr[1] = dev;
10084                 } else {
10085                         info->user_ptr[1] = wdev;
10086                 }
10087
10088                 if (dev) {
10089                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10090                             !netif_running(dev)) {
10091                                 if (rtnl)
10092                                         rtnl_unlock();
10093                                 return -ENETDOWN;
10094                         }
10095
10096                         dev_hold(dev);
10097                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10098                         if (!wdev->p2p_started) {
10099                                 if (rtnl)
10100                                         rtnl_unlock();
10101                                 return -ENETDOWN;
10102                         }
10103                 }
10104
10105                 info->user_ptr[0] = rdev;
10106         }
10107
10108         return 0;
10109 }
10110
10111 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10112                               struct genl_info *info)
10113 {
10114         if (info->user_ptr[1]) {
10115                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10116                         struct wireless_dev *wdev = info->user_ptr[1];
10117
10118                         if (wdev->netdev)
10119                                 dev_put(wdev->netdev);
10120                 } else {
10121                         dev_put(info->user_ptr[1]);
10122                 }
10123         }
10124
10125         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10126                 rtnl_unlock();
10127
10128         /* If needed, clear the netlink message payload from the SKB
10129          * as it might contain key data that shouldn't stick around on
10130          * the heap after the SKB is freed. The netlink message header
10131          * is still needed for further processing, so leave it intact.
10132          */
10133         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10134                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10135
10136                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10137         }
10138 }
10139
10140 static const struct genl_ops nl80211_ops[] = {
10141         {
10142                 .cmd = NL80211_CMD_GET_WIPHY,
10143                 .doit = nl80211_get_wiphy,
10144                 .dumpit = nl80211_dump_wiphy,
10145                 .done = nl80211_dump_wiphy_done,
10146                 .policy = nl80211_policy,
10147                 /* can be retrieved by unprivileged users */
10148                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10149                                   NL80211_FLAG_NEED_RTNL,
10150         },
10151         {
10152                 .cmd = NL80211_CMD_SET_WIPHY,
10153                 .doit = nl80211_set_wiphy,
10154                 .policy = nl80211_policy,
10155                 .flags = GENL_ADMIN_PERM,
10156                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10157         },
10158         {
10159                 .cmd = NL80211_CMD_GET_INTERFACE,
10160                 .doit = nl80211_get_interface,
10161                 .dumpit = nl80211_dump_interface,
10162                 .policy = nl80211_policy,
10163                 /* can be retrieved by unprivileged users */
10164                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10165                                   NL80211_FLAG_NEED_RTNL,
10166         },
10167         {
10168                 .cmd = NL80211_CMD_SET_INTERFACE,
10169                 .doit = nl80211_set_interface,
10170                 .policy = nl80211_policy,
10171                 .flags = GENL_ADMIN_PERM,
10172                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10173                                   NL80211_FLAG_NEED_RTNL,
10174         },
10175         {
10176                 .cmd = NL80211_CMD_NEW_INTERFACE,
10177                 .doit = nl80211_new_interface,
10178                 .policy = nl80211_policy,
10179                 .flags = GENL_ADMIN_PERM,
10180                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10181                                   NL80211_FLAG_NEED_RTNL,
10182         },
10183         {
10184                 .cmd = NL80211_CMD_DEL_INTERFACE,
10185                 .doit = nl80211_del_interface,
10186                 .policy = nl80211_policy,
10187                 .flags = GENL_ADMIN_PERM,
10188                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10189                                   NL80211_FLAG_NEED_RTNL,
10190         },
10191         {
10192                 .cmd = NL80211_CMD_GET_KEY,
10193                 .doit = nl80211_get_key,
10194                 .policy = nl80211_policy,
10195                 .flags = GENL_ADMIN_PERM,
10196                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10197                                   NL80211_FLAG_NEED_RTNL,
10198         },
10199         {
10200                 .cmd = NL80211_CMD_SET_KEY,
10201                 .doit = nl80211_set_key,
10202                 .policy = nl80211_policy,
10203                 .flags = GENL_ADMIN_PERM,
10204                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10205                                   NL80211_FLAG_NEED_RTNL |
10206                                   NL80211_FLAG_CLEAR_SKB,
10207         },
10208         {
10209                 .cmd = NL80211_CMD_NEW_KEY,
10210                 .doit = nl80211_new_key,
10211                 .policy = nl80211_policy,
10212                 .flags = GENL_ADMIN_PERM,
10213                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10214                                   NL80211_FLAG_NEED_RTNL |
10215                                   NL80211_FLAG_CLEAR_SKB,
10216         },
10217         {
10218                 .cmd = NL80211_CMD_DEL_KEY,
10219                 .doit = nl80211_del_key,
10220                 .policy = nl80211_policy,
10221                 .flags = GENL_ADMIN_PERM,
10222                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10223                                   NL80211_FLAG_NEED_RTNL,
10224         },
10225         {
10226                 .cmd = NL80211_CMD_SET_BEACON,
10227                 .policy = nl80211_policy,
10228                 .flags = GENL_ADMIN_PERM,
10229                 .doit = nl80211_set_beacon,
10230                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10231                                   NL80211_FLAG_NEED_RTNL,
10232         },
10233         {
10234                 .cmd = NL80211_CMD_START_AP,
10235                 .policy = nl80211_policy,
10236                 .flags = GENL_ADMIN_PERM,
10237                 .doit = nl80211_start_ap,
10238                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10239                                   NL80211_FLAG_NEED_RTNL,
10240         },
10241         {
10242                 .cmd = NL80211_CMD_STOP_AP,
10243                 .policy = nl80211_policy,
10244                 .flags = GENL_ADMIN_PERM,
10245                 .doit = nl80211_stop_ap,
10246                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10247                                   NL80211_FLAG_NEED_RTNL,
10248         },
10249         {
10250                 .cmd = NL80211_CMD_GET_STATION,
10251                 .doit = nl80211_get_station,
10252                 .dumpit = nl80211_dump_station,
10253                 .policy = nl80211_policy,
10254                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10255                                   NL80211_FLAG_NEED_RTNL,
10256         },
10257         {
10258                 .cmd = NL80211_CMD_SET_STATION,
10259                 .doit = nl80211_set_station,
10260                 .policy = nl80211_policy,
10261                 .flags = GENL_ADMIN_PERM,
10262                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10263                                   NL80211_FLAG_NEED_RTNL,
10264         },
10265         {
10266                 .cmd = NL80211_CMD_NEW_STATION,
10267                 .doit = nl80211_new_station,
10268                 .policy = nl80211_policy,
10269                 .flags = GENL_ADMIN_PERM,
10270                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10271                                   NL80211_FLAG_NEED_RTNL,
10272         },
10273         {
10274                 .cmd = NL80211_CMD_DEL_STATION,
10275                 .doit = nl80211_del_station,
10276                 .policy = nl80211_policy,
10277                 .flags = GENL_ADMIN_PERM,
10278                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10279                                   NL80211_FLAG_NEED_RTNL,
10280         },
10281         {
10282                 .cmd = NL80211_CMD_GET_MPATH,
10283                 .doit = nl80211_get_mpath,
10284                 .dumpit = nl80211_dump_mpath,
10285                 .policy = nl80211_policy,
10286                 .flags = GENL_ADMIN_PERM,
10287                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10288                                   NL80211_FLAG_NEED_RTNL,
10289         },
10290         {
10291                 .cmd = NL80211_CMD_GET_MPP,
10292                 .doit = nl80211_get_mpp,
10293                 .dumpit = nl80211_dump_mpp,
10294                 .policy = nl80211_policy,
10295                 .flags = GENL_ADMIN_PERM,
10296                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10297                                   NL80211_FLAG_NEED_RTNL,
10298         },
10299         {
10300                 .cmd = NL80211_CMD_SET_MPATH,
10301                 .doit = nl80211_set_mpath,
10302                 .policy = nl80211_policy,
10303                 .flags = GENL_ADMIN_PERM,
10304                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10305                                   NL80211_FLAG_NEED_RTNL,
10306         },
10307         {
10308                 .cmd = NL80211_CMD_NEW_MPATH,
10309                 .doit = nl80211_new_mpath,
10310                 .policy = nl80211_policy,
10311                 .flags = GENL_ADMIN_PERM,
10312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10313                                   NL80211_FLAG_NEED_RTNL,
10314         },
10315         {
10316                 .cmd = NL80211_CMD_DEL_MPATH,
10317                 .doit = nl80211_del_mpath,
10318                 .policy = nl80211_policy,
10319                 .flags = GENL_ADMIN_PERM,
10320                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10321                                   NL80211_FLAG_NEED_RTNL,
10322         },
10323         {
10324                 .cmd = NL80211_CMD_SET_BSS,
10325                 .doit = nl80211_set_bss,
10326                 .policy = nl80211_policy,
10327                 .flags = GENL_ADMIN_PERM,
10328                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10329                                   NL80211_FLAG_NEED_RTNL,
10330         },
10331         {
10332                 .cmd = NL80211_CMD_GET_REG,
10333                 .doit = nl80211_get_reg_do,
10334                 .dumpit = nl80211_get_reg_dump,
10335                 .policy = nl80211_policy,
10336                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10337                 /* can be retrieved by unprivileged users */
10338         },
10339         {
10340                 .cmd = NL80211_CMD_SET_REG,
10341                 .doit = nl80211_set_reg,
10342                 .policy = nl80211_policy,
10343                 .flags = GENL_ADMIN_PERM,
10344                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10345         },
10346         {
10347                 .cmd = NL80211_CMD_REQ_SET_REG,
10348                 .doit = nl80211_req_set_reg,
10349                 .policy = nl80211_policy,
10350                 .flags = GENL_ADMIN_PERM,
10351         },
10352         {
10353                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10354                 .doit = nl80211_get_mesh_config,
10355                 .policy = nl80211_policy,
10356                 /* can be retrieved by unprivileged users */
10357                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10358                                   NL80211_FLAG_NEED_RTNL,
10359         },
10360         {
10361                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10362                 .doit = nl80211_update_mesh_config,
10363                 .policy = nl80211_policy,
10364                 .flags = GENL_ADMIN_PERM,
10365                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10366                                   NL80211_FLAG_NEED_RTNL,
10367         },
10368         {
10369                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10370                 .doit = nl80211_trigger_scan,
10371                 .policy = nl80211_policy,
10372                 .flags = GENL_ADMIN_PERM,
10373                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10374                                   NL80211_FLAG_NEED_RTNL,
10375         },
10376         {
10377                 .cmd = NL80211_CMD_GET_SCAN,
10378                 .policy = nl80211_policy,
10379                 .dumpit = nl80211_dump_scan,
10380         },
10381         {
10382                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10383                 .doit = nl80211_start_sched_scan,
10384                 .policy = nl80211_policy,
10385                 .flags = GENL_ADMIN_PERM,
10386                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10387                                   NL80211_FLAG_NEED_RTNL,
10388         },
10389         {
10390                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10391                 .doit = nl80211_stop_sched_scan,
10392                 .policy = nl80211_policy,
10393                 .flags = GENL_ADMIN_PERM,
10394                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10395                                   NL80211_FLAG_NEED_RTNL,
10396         },
10397         {
10398                 .cmd = NL80211_CMD_AUTHENTICATE,
10399                 .doit = nl80211_authenticate,
10400                 .policy = nl80211_policy,
10401                 .flags = GENL_ADMIN_PERM,
10402                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10403                                   NL80211_FLAG_NEED_RTNL |
10404                                   NL80211_FLAG_CLEAR_SKB,
10405         },
10406         {
10407                 .cmd = NL80211_CMD_ASSOCIATE,
10408                 .doit = nl80211_associate,
10409                 .policy = nl80211_policy,
10410                 .flags = GENL_ADMIN_PERM,
10411                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10412                                   NL80211_FLAG_NEED_RTNL,
10413         },
10414         {
10415                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10416                 .doit = nl80211_deauthenticate,
10417                 .policy = nl80211_policy,
10418                 .flags = GENL_ADMIN_PERM,
10419                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10420                                   NL80211_FLAG_NEED_RTNL,
10421         },
10422         {
10423                 .cmd = NL80211_CMD_DISASSOCIATE,
10424                 .doit = nl80211_disassociate,
10425                 .policy = nl80211_policy,
10426                 .flags = GENL_ADMIN_PERM,
10427                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10428                                   NL80211_FLAG_NEED_RTNL,
10429         },
10430         {
10431                 .cmd = NL80211_CMD_JOIN_IBSS,
10432                 .doit = nl80211_join_ibss,
10433                 .policy = nl80211_policy,
10434                 .flags = GENL_ADMIN_PERM,
10435                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10436                                   NL80211_FLAG_NEED_RTNL,
10437         },
10438         {
10439                 .cmd = NL80211_CMD_LEAVE_IBSS,
10440                 .doit = nl80211_leave_ibss,
10441                 .policy = nl80211_policy,
10442                 .flags = GENL_ADMIN_PERM,
10443                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10444                                   NL80211_FLAG_NEED_RTNL,
10445         },
10446 #ifdef CONFIG_NL80211_TESTMODE
10447         {
10448                 .cmd = NL80211_CMD_TESTMODE,
10449                 .doit = nl80211_testmode_do,
10450                 .dumpit = nl80211_testmode_dump,
10451                 .policy = nl80211_policy,
10452                 .flags = GENL_ADMIN_PERM,
10453                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10454                                   NL80211_FLAG_NEED_RTNL,
10455         },
10456 #endif
10457         {
10458                 .cmd = NL80211_CMD_CONNECT,
10459                 .doit = nl80211_connect,
10460                 .policy = nl80211_policy,
10461                 .flags = GENL_ADMIN_PERM,
10462                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10463                                   NL80211_FLAG_NEED_RTNL,
10464         },
10465         {
10466                 .cmd = NL80211_CMD_DISCONNECT,
10467                 .doit = nl80211_disconnect,
10468                 .policy = nl80211_policy,
10469                 .flags = GENL_ADMIN_PERM,
10470                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10471                                   NL80211_FLAG_NEED_RTNL,
10472         },
10473         {
10474                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10475                 .doit = nl80211_wiphy_netns,
10476                 .policy = nl80211_policy,
10477                 .flags = GENL_ADMIN_PERM,
10478                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10479                                   NL80211_FLAG_NEED_RTNL,
10480         },
10481         {
10482                 .cmd = NL80211_CMD_GET_SURVEY,
10483                 .policy = nl80211_policy,
10484                 .dumpit = nl80211_dump_survey,
10485         },
10486         {
10487                 .cmd = NL80211_CMD_SET_PMKSA,
10488                 .doit = nl80211_setdel_pmksa,
10489                 .policy = nl80211_policy,
10490                 .flags = GENL_ADMIN_PERM,
10491                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10492                                   NL80211_FLAG_NEED_RTNL,
10493         },
10494         {
10495                 .cmd = NL80211_CMD_DEL_PMKSA,
10496                 .doit = nl80211_setdel_pmksa,
10497                 .policy = nl80211_policy,
10498                 .flags = GENL_ADMIN_PERM,
10499                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10500                                   NL80211_FLAG_NEED_RTNL,
10501         },
10502         {
10503                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10504                 .doit = nl80211_flush_pmksa,
10505                 .policy = nl80211_policy,
10506                 .flags = GENL_ADMIN_PERM,
10507                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10508                                   NL80211_FLAG_NEED_RTNL,
10509         },
10510         {
10511                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10512                 .doit = nl80211_remain_on_channel,
10513                 .policy = nl80211_policy,
10514                 .flags = GENL_ADMIN_PERM,
10515                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10516                                   NL80211_FLAG_NEED_RTNL,
10517         },
10518         {
10519                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10520                 .doit = nl80211_cancel_remain_on_channel,
10521                 .policy = nl80211_policy,
10522                 .flags = GENL_ADMIN_PERM,
10523                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10524                                   NL80211_FLAG_NEED_RTNL,
10525         },
10526         {
10527                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10528                 .doit = nl80211_set_tx_bitrate_mask,
10529                 .policy = nl80211_policy,
10530                 .flags = GENL_ADMIN_PERM,
10531                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10532                                   NL80211_FLAG_NEED_RTNL,
10533         },
10534         {
10535                 .cmd = NL80211_CMD_REGISTER_FRAME,
10536                 .doit = nl80211_register_mgmt,
10537                 .policy = nl80211_policy,
10538                 .flags = GENL_ADMIN_PERM,
10539                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10540                                   NL80211_FLAG_NEED_RTNL,
10541         },
10542         {
10543                 .cmd = NL80211_CMD_FRAME,
10544                 .doit = nl80211_tx_mgmt,
10545                 .policy = nl80211_policy,
10546                 .flags = GENL_ADMIN_PERM,
10547                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10548                                   NL80211_FLAG_NEED_RTNL,
10549         },
10550         {
10551                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10552                 .doit = nl80211_tx_mgmt_cancel_wait,
10553                 .policy = nl80211_policy,
10554                 .flags = GENL_ADMIN_PERM,
10555                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10556                                   NL80211_FLAG_NEED_RTNL,
10557         },
10558         {
10559                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10560                 .doit = nl80211_set_power_save,
10561                 .policy = nl80211_policy,
10562                 .flags = GENL_ADMIN_PERM,
10563                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10564                                   NL80211_FLAG_NEED_RTNL,
10565         },
10566         {
10567                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10568                 .doit = nl80211_get_power_save,
10569                 .policy = nl80211_policy,
10570                 /* can be retrieved by unprivileged users */
10571                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10572                                   NL80211_FLAG_NEED_RTNL,
10573         },
10574         {
10575                 .cmd = NL80211_CMD_SET_CQM,
10576                 .doit = nl80211_set_cqm,
10577                 .policy = nl80211_policy,
10578                 .flags = GENL_ADMIN_PERM,
10579                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10580                                   NL80211_FLAG_NEED_RTNL,
10581         },
10582         {
10583                 .cmd = NL80211_CMD_SET_CHANNEL,
10584                 .doit = nl80211_set_channel,
10585                 .policy = nl80211_policy,
10586                 .flags = GENL_ADMIN_PERM,
10587                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10588                                   NL80211_FLAG_NEED_RTNL,
10589         },
10590         {
10591                 .cmd = NL80211_CMD_SET_WDS_PEER,
10592                 .doit = nl80211_set_wds_peer,
10593                 .policy = nl80211_policy,
10594                 .flags = GENL_ADMIN_PERM,
10595                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10596                                   NL80211_FLAG_NEED_RTNL,
10597         },
10598         {
10599                 .cmd = NL80211_CMD_JOIN_MESH,
10600                 .doit = nl80211_join_mesh,
10601                 .policy = nl80211_policy,
10602                 .flags = GENL_ADMIN_PERM,
10603                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10604                                   NL80211_FLAG_NEED_RTNL,
10605         },
10606         {
10607                 .cmd = NL80211_CMD_LEAVE_MESH,
10608                 .doit = nl80211_leave_mesh,
10609                 .policy = nl80211_policy,
10610                 .flags = GENL_ADMIN_PERM,
10611                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10612                                   NL80211_FLAG_NEED_RTNL,
10613         },
10614         {
10615                 .cmd = NL80211_CMD_JOIN_OCB,
10616                 .doit = nl80211_join_ocb,
10617                 .policy = nl80211_policy,
10618                 .flags = GENL_ADMIN_PERM,
10619                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10620                                   NL80211_FLAG_NEED_RTNL,
10621         },
10622         {
10623                 .cmd = NL80211_CMD_LEAVE_OCB,
10624                 .doit = nl80211_leave_ocb,
10625                 .policy = nl80211_policy,
10626                 .flags = GENL_ADMIN_PERM,
10627                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10628                                   NL80211_FLAG_NEED_RTNL,
10629         },
10630 #ifdef CONFIG_PM
10631         {
10632                 .cmd = NL80211_CMD_GET_WOWLAN,
10633                 .doit = nl80211_get_wowlan,
10634                 .policy = nl80211_policy,
10635                 /* can be retrieved by unprivileged users */
10636                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10637                                   NL80211_FLAG_NEED_RTNL,
10638         },
10639         {
10640                 .cmd = NL80211_CMD_SET_WOWLAN,
10641                 .doit = nl80211_set_wowlan,
10642                 .policy = nl80211_policy,
10643                 .flags = GENL_ADMIN_PERM,
10644                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10645                                   NL80211_FLAG_NEED_RTNL,
10646         },
10647 #endif
10648         {
10649                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10650                 .doit = nl80211_set_rekey_data,
10651                 .policy = nl80211_policy,
10652                 .flags = GENL_ADMIN_PERM,
10653                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10654                                   NL80211_FLAG_NEED_RTNL |
10655                                   NL80211_FLAG_CLEAR_SKB,
10656         },
10657         {
10658                 .cmd = NL80211_CMD_TDLS_MGMT,
10659                 .doit = nl80211_tdls_mgmt,
10660                 .policy = nl80211_policy,
10661                 .flags = GENL_ADMIN_PERM,
10662                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10663                                   NL80211_FLAG_NEED_RTNL,
10664         },
10665         {
10666                 .cmd = NL80211_CMD_TDLS_OPER,
10667                 .doit = nl80211_tdls_oper,
10668                 .policy = nl80211_policy,
10669                 .flags = GENL_ADMIN_PERM,
10670                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10671                                   NL80211_FLAG_NEED_RTNL,
10672         },
10673         {
10674                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10675                 .doit = nl80211_register_unexpected_frame,
10676                 .policy = nl80211_policy,
10677                 .flags = GENL_ADMIN_PERM,
10678                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10679                                   NL80211_FLAG_NEED_RTNL,
10680         },
10681         {
10682                 .cmd = NL80211_CMD_PROBE_CLIENT,
10683                 .doit = nl80211_probe_client,
10684                 .policy = nl80211_policy,
10685                 .flags = GENL_ADMIN_PERM,
10686                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10687                                   NL80211_FLAG_NEED_RTNL,
10688         },
10689         {
10690                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10691                 .doit = nl80211_register_beacons,
10692                 .policy = nl80211_policy,
10693                 .flags = GENL_ADMIN_PERM,
10694                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10695                                   NL80211_FLAG_NEED_RTNL,
10696         },
10697         {
10698                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10699                 .doit = nl80211_set_noack_map,
10700                 .policy = nl80211_policy,
10701                 .flags = GENL_ADMIN_PERM,
10702                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10703                                   NL80211_FLAG_NEED_RTNL,
10704         },
10705         {
10706                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10707                 .doit = nl80211_start_p2p_device,
10708                 .policy = nl80211_policy,
10709                 .flags = GENL_ADMIN_PERM,
10710                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10711                                   NL80211_FLAG_NEED_RTNL,
10712         },
10713         {
10714                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10715                 .doit = nl80211_stop_p2p_device,
10716                 .policy = nl80211_policy,
10717                 .flags = GENL_ADMIN_PERM,
10718                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10719                                   NL80211_FLAG_NEED_RTNL,
10720         },
10721         {
10722                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10723                 .doit = nl80211_set_mcast_rate,
10724                 .policy = nl80211_policy,
10725                 .flags = GENL_ADMIN_PERM,
10726                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10727                                   NL80211_FLAG_NEED_RTNL,
10728         },
10729         {
10730                 .cmd = NL80211_CMD_SET_MAC_ACL,
10731                 .doit = nl80211_set_mac_acl,
10732                 .policy = nl80211_policy,
10733                 .flags = GENL_ADMIN_PERM,
10734                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10735                                   NL80211_FLAG_NEED_RTNL,
10736         },
10737         {
10738                 .cmd = NL80211_CMD_RADAR_DETECT,
10739                 .doit = nl80211_start_radar_detection,
10740                 .policy = nl80211_policy,
10741                 .flags = GENL_ADMIN_PERM,
10742                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10743                                   NL80211_FLAG_NEED_RTNL,
10744         },
10745         {
10746                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10747                 .doit = nl80211_get_protocol_features,
10748                 .policy = nl80211_policy,
10749         },
10750         {
10751                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10752                 .doit = nl80211_update_ft_ies,
10753                 .policy = nl80211_policy,
10754                 .flags = GENL_ADMIN_PERM,
10755                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10756                                   NL80211_FLAG_NEED_RTNL,
10757         },
10758         {
10759                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10760                 .doit = nl80211_crit_protocol_start,
10761                 .policy = nl80211_policy,
10762                 .flags = GENL_ADMIN_PERM,
10763                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10764                                   NL80211_FLAG_NEED_RTNL,
10765         },
10766         {
10767                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10768                 .doit = nl80211_crit_protocol_stop,
10769                 .policy = nl80211_policy,
10770                 .flags = GENL_ADMIN_PERM,
10771                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10772                                   NL80211_FLAG_NEED_RTNL,
10773         },
10774         {
10775                 .cmd = NL80211_CMD_GET_COALESCE,
10776                 .doit = nl80211_get_coalesce,
10777                 .policy = nl80211_policy,
10778                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10779                                   NL80211_FLAG_NEED_RTNL,
10780         },
10781         {
10782                 .cmd = NL80211_CMD_SET_COALESCE,
10783                 .doit = nl80211_set_coalesce,
10784                 .policy = nl80211_policy,
10785                 .flags = GENL_ADMIN_PERM,
10786                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10787                                   NL80211_FLAG_NEED_RTNL,
10788         },
10789         {
10790                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10791                 .doit = nl80211_channel_switch,
10792                 .policy = nl80211_policy,
10793                 .flags = GENL_ADMIN_PERM,
10794                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10795                                   NL80211_FLAG_NEED_RTNL,
10796         },
10797         {
10798                 .cmd = NL80211_CMD_VENDOR,
10799                 .doit = nl80211_vendor_cmd,
10800                 .policy = nl80211_policy,
10801                 .flags = GENL_ADMIN_PERM,
10802                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10803                                   NL80211_FLAG_NEED_RTNL,
10804         },
10805         {
10806                 .cmd = NL80211_CMD_SET_QOS_MAP,
10807                 .doit = nl80211_set_qos_map,
10808                 .policy = nl80211_policy,
10809                 .flags = GENL_ADMIN_PERM,
10810                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10811                                   NL80211_FLAG_NEED_RTNL,
10812         },
10813         {
10814                 .cmd = NL80211_CMD_ADD_TX_TS,
10815                 .doit = nl80211_add_tx_ts,
10816                 .policy = nl80211_policy,
10817                 .flags = GENL_ADMIN_PERM,
10818                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10819                                   NL80211_FLAG_NEED_RTNL,
10820         },
10821         {
10822                 .cmd = NL80211_CMD_DEL_TX_TS,
10823                 .doit = nl80211_del_tx_ts,
10824                 .policy = nl80211_policy,
10825                 .flags = GENL_ADMIN_PERM,
10826                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10827                                   NL80211_FLAG_NEED_RTNL,
10828         },
10829         {
10830                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
10831                 .doit = nl80211_tdls_channel_switch,
10832                 .policy = nl80211_policy,
10833                 .flags = GENL_ADMIN_PERM,
10834                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10835                                   NL80211_FLAG_NEED_RTNL,
10836         },
10837         {
10838                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
10839                 .doit = nl80211_tdls_cancel_channel_switch,
10840                 .policy = nl80211_policy,
10841                 .flags = GENL_ADMIN_PERM,
10842                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10843                                   NL80211_FLAG_NEED_RTNL,
10844         },
10845 };
10846
10847 /* notification functions */
10848
10849 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
10850                           enum nl80211_commands cmd)
10851 {
10852         struct sk_buff *msg;
10853         struct nl80211_dump_wiphy_state state = {};
10854
10855         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
10856                 cmd != NL80211_CMD_DEL_WIPHY);
10857
10858         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10859         if (!msg)
10860                 return;
10861
10862         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
10863                 nlmsg_free(msg);
10864                 return;
10865         }
10866
10867         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10868                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
10869 }
10870
10871 static int nl80211_add_scan_req(struct sk_buff *msg,
10872                                 struct cfg80211_registered_device *rdev)
10873 {
10874         struct cfg80211_scan_request *req = rdev->scan_req;
10875         struct nlattr *nest;
10876         int i;
10877
10878         if (WARN_ON(!req))
10879                 return 0;
10880
10881         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
10882         if (!nest)
10883                 goto nla_put_failure;
10884         for (i = 0; i < req->n_ssids; i++) {
10885                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
10886                         goto nla_put_failure;
10887         }
10888         nla_nest_end(msg, nest);
10889
10890         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
10891         if (!nest)
10892                 goto nla_put_failure;
10893         for (i = 0; i < req->n_channels; i++) {
10894                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
10895                         goto nla_put_failure;
10896         }
10897         nla_nest_end(msg, nest);
10898
10899         if (req->ie &&
10900             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
10901                 goto nla_put_failure;
10902
10903         if (req->flags &&
10904             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
10905                 goto nla_put_failure;
10906
10907         return 0;
10908  nla_put_failure:
10909         return -ENOBUFS;
10910 }
10911
10912 static int nl80211_send_scan_msg(struct sk_buff *msg,
10913                                  struct cfg80211_registered_device *rdev,
10914                                  struct wireless_dev *wdev,
10915                                  u32 portid, u32 seq, int flags,
10916                                  u32 cmd)
10917 {
10918         void *hdr;
10919
10920         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10921         if (!hdr)
10922                 return -1;
10923
10924         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10925             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
10926                                          wdev->netdev->ifindex)) ||
10927             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
10928                 goto nla_put_failure;
10929
10930         /* ignore errors and send incomplete event anyway */
10931         nl80211_add_scan_req(msg, rdev);
10932
10933         return genlmsg_end(msg, hdr);
10934
10935  nla_put_failure:
10936         genlmsg_cancel(msg, hdr);
10937         return -EMSGSIZE;
10938 }
10939
10940 static int
10941 nl80211_send_sched_scan_msg(struct sk_buff *msg,
10942                             struct cfg80211_registered_device *rdev,
10943                             struct net_device *netdev,
10944                             u32 portid, u32 seq, int flags, u32 cmd)
10945 {
10946         void *hdr;
10947
10948         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
10949         if (!hdr)
10950                 return -1;
10951
10952         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
10953             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
10954                 goto nla_put_failure;
10955
10956         return genlmsg_end(msg, hdr);
10957
10958  nla_put_failure:
10959         genlmsg_cancel(msg, hdr);
10960         return -EMSGSIZE;
10961 }
10962
10963 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
10964                              struct wireless_dev *wdev)
10965 {
10966         struct sk_buff *msg;
10967
10968         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10969         if (!msg)
10970                 return;
10971
10972         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10973                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
10974                 nlmsg_free(msg);
10975                 return;
10976         }
10977
10978         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
10979                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
10980 }
10981
10982 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
10983                                        struct wireless_dev *wdev, bool aborted)
10984 {
10985         struct sk_buff *msg;
10986
10987         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10988         if (!msg)
10989                 return NULL;
10990
10991         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
10992                                   aborted ? NL80211_CMD_SCAN_ABORTED :
10993                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
10994                 nlmsg_free(msg);
10995                 return NULL;
10996         }
10997
10998         return msg;
10999 }
11000
11001 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11002                               struct sk_buff *msg)
11003 {
11004         if (!msg)
11005                 return;
11006
11007         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11008                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11009 }
11010
11011 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11012                                      struct net_device *netdev)
11013 {
11014         struct sk_buff *msg;
11015
11016         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11017         if (!msg)
11018                 return;
11019
11020         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11021                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11022                 nlmsg_free(msg);
11023                 return;
11024         }
11025
11026         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11027                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11028 }
11029
11030 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11031                              struct net_device *netdev, u32 cmd)
11032 {
11033         struct sk_buff *msg;
11034
11035         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11036         if (!msg)
11037                 return;
11038
11039         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11040                 nlmsg_free(msg);
11041                 return;
11042         }
11043
11044         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11045                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11046 }
11047
11048 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11049                                           struct regulatory_request *request)
11050 {
11051         /* Userspace can always count this one always being set */
11052         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11053                 goto nla_put_failure;
11054
11055         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11056                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11057                                NL80211_REGDOM_TYPE_WORLD))
11058                         goto nla_put_failure;
11059         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11060                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11061                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11062                         goto nla_put_failure;
11063         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11064                    request->intersect) {
11065                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11066                                NL80211_REGDOM_TYPE_INTERSECTION))
11067                         goto nla_put_failure;
11068         } else {
11069                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11070                                NL80211_REGDOM_TYPE_COUNTRY) ||
11071                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11072                                    request->alpha2))
11073                         goto nla_put_failure;
11074         }
11075
11076         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11077                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11078
11079                 if (wiphy &&
11080                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11081                         goto nla_put_failure;
11082
11083                 if (wiphy &&
11084                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11085                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11086                         goto nla_put_failure;
11087         }
11088
11089         return true;
11090
11091 nla_put_failure:
11092         return false;
11093 }
11094
11095 /*
11096  * This can happen on global regulatory changes or device specific settings
11097  * based on custom regulatory domains.
11098  */
11099 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11100                                      struct regulatory_request *request)
11101 {
11102         struct sk_buff *msg;
11103         void *hdr;
11104
11105         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11106         if (!msg)
11107                 return;
11108
11109         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11110         if (!hdr) {
11111                 nlmsg_free(msg);
11112                 return;
11113         }
11114
11115         if (nl80211_reg_change_event_fill(msg, request) == false)
11116                 goto nla_put_failure;
11117
11118         genlmsg_end(msg, hdr);
11119
11120         rcu_read_lock();
11121         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11122                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11123         rcu_read_unlock();
11124
11125         return;
11126
11127 nla_put_failure:
11128         genlmsg_cancel(msg, hdr);
11129         nlmsg_free(msg);
11130 }
11131
11132 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11133                                     struct net_device *netdev,
11134                                     const u8 *buf, size_t len,
11135                                     enum nl80211_commands cmd, gfp_t gfp,
11136                                     int uapsd_queues)
11137 {
11138         struct sk_buff *msg;
11139         void *hdr;
11140
11141         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11142         if (!msg)
11143                 return;
11144
11145         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11146         if (!hdr) {
11147                 nlmsg_free(msg);
11148                 return;
11149         }
11150
11151         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11152             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11153             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11154                 goto nla_put_failure;
11155
11156         if (uapsd_queues >= 0) {
11157                 struct nlattr *nla_wmm =
11158                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11159                 if (!nla_wmm)
11160                         goto nla_put_failure;
11161
11162                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11163                                uapsd_queues))
11164                         goto nla_put_failure;
11165
11166                 nla_nest_end(msg, nla_wmm);
11167         }
11168
11169         genlmsg_end(msg, hdr);
11170
11171         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11172                                 NL80211_MCGRP_MLME, gfp);
11173         return;
11174
11175  nla_put_failure:
11176         genlmsg_cancel(msg, hdr);
11177         nlmsg_free(msg);
11178 }
11179
11180 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11181                           struct net_device *netdev, const u8 *buf,
11182                           size_t len, gfp_t gfp)
11183 {
11184         nl80211_send_mlme_event(rdev, netdev, buf, len,
11185                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11186 }
11187
11188 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11189                            struct net_device *netdev, const u8 *buf,
11190                            size_t len, gfp_t gfp, int uapsd_queues)
11191 {
11192         nl80211_send_mlme_event(rdev, netdev, buf, len,
11193                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11194 }
11195
11196 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11197                          struct net_device *netdev, const u8 *buf,
11198                          size_t len, gfp_t gfp)
11199 {
11200         nl80211_send_mlme_event(rdev, netdev, buf, len,
11201                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11202 }
11203
11204 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11205                            struct net_device *netdev, const u8 *buf,
11206                            size_t len, gfp_t gfp)
11207 {
11208         nl80211_send_mlme_event(rdev, netdev, buf, len,
11209                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11210 }
11211
11212 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11213                                   size_t len)
11214 {
11215         struct wireless_dev *wdev = dev->ieee80211_ptr;
11216         struct wiphy *wiphy = wdev->wiphy;
11217         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11218         const struct ieee80211_mgmt *mgmt = (void *)buf;
11219         u32 cmd;
11220
11221         if (WARN_ON(len < 2))
11222                 return;
11223
11224         if (ieee80211_is_deauth(mgmt->frame_control))
11225                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11226         else
11227                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11228
11229         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11230         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11231 }
11232 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11233
11234 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11235                                       struct net_device *netdev, int cmd,
11236                                       const u8 *addr, gfp_t gfp)
11237 {
11238         struct sk_buff *msg;
11239         void *hdr;
11240
11241         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11242         if (!msg)
11243                 return;
11244
11245         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11246         if (!hdr) {
11247                 nlmsg_free(msg);
11248                 return;
11249         }
11250
11251         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11252             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11253             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11254             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11255                 goto nla_put_failure;
11256
11257         genlmsg_end(msg, hdr);
11258
11259         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11260                                 NL80211_MCGRP_MLME, gfp);
11261         return;
11262
11263  nla_put_failure:
11264         genlmsg_cancel(msg, hdr);
11265         nlmsg_free(msg);
11266 }
11267
11268 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11269                                struct net_device *netdev, const u8 *addr,
11270                                gfp_t gfp)
11271 {
11272         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11273                                   addr, gfp);
11274 }
11275
11276 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11277                                 struct net_device *netdev, const u8 *addr,
11278                                 gfp_t gfp)
11279 {
11280         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11281                                   addr, gfp);
11282 }
11283
11284 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11285                                  struct net_device *netdev, const u8 *bssid,
11286                                  const u8 *req_ie, size_t req_ie_len,
11287                                  const u8 *resp_ie, size_t resp_ie_len,
11288                                  u16 status, gfp_t gfp)
11289 {
11290         struct sk_buff *msg;
11291         void *hdr;
11292
11293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11294         if (!msg)
11295                 return;
11296
11297         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11298         if (!hdr) {
11299                 nlmsg_free(msg);
11300                 return;
11301         }
11302
11303         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11304             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11305             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11306             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11307             (req_ie &&
11308              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11309             (resp_ie &&
11310              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11311                 goto nla_put_failure;
11312
11313         genlmsg_end(msg, hdr);
11314
11315         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11316                                 NL80211_MCGRP_MLME, gfp);
11317         return;
11318
11319  nla_put_failure:
11320         genlmsg_cancel(msg, hdr);
11321         nlmsg_free(msg);
11322
11323 }
11324
11325 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11326                          struct net_device *netdev, const u8 *bssid,
11327                          const u8 *req_ie, size_t req_ie_len,
11328                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11329 {
11330         struct sk_buff *msg;
11331         void *hdr;
11332
11333         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11334         if (!msg)
11335                 return;
11336
11337         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11338         if (!hdr) {
11339                 nlmsg_free(msg);
11340                 return;
11341         }
11342
11343         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11344             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11345             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11346             (req_ie &&
11347              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11348             (resp_ie &&
11349              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11350                 goto nla_put_failure;
11351
11352         genlmsg_end(msg, hdr);
11353
11354         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11355                                 NL80211_MCGRP_MLME, gfp);
11356         return;
11357
11358  nla_put_failure:
11359         genlmsg_cancel(msg, hdr);
11360         nlmsg_free(msg);
11361
11362 }
11363
11364 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11365                                struct net_device *netdev, u16 reason,
11366                                const u8 *ie, size_t ie_len, bool from_ap)
11367 {
11368         struct sk_buff *msg;
11369         void *hdr;
11370
11371         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11372         if (!msg)
11373                 return;
11374
11375         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11376         if (!hdr) {
11377                 nlmsg_free(msg);
11378                 return;
11379         }
11380
11381         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11382             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11383             (from_ap && reason &&
11384              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11385             (from_ap &&
11386              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11387             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11388                 goto nla_put_failure;
11389
11390         genlmsg_end(msg, hdr);
11391
11392         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11393                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11394         return;
11395
11396  nla_put_failure:
11397         genlmsg_cancel(msg, hdr);
11398         nlmsg_free(msg);
11399
11400 }
11401
11402 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11403                              struct net_device *netdev, const u8 *bssid,
11404                              gfp_t gfp)
11405 {
11406         struct sk_buff *msg;
11407         void *hdr;
11408
11409         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11410         if (!msg)
11411                 return;
11412
11413         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11414         if (!hdr) {
11415                 nlmsg_free(msg);
11416                 return;
11417         }
11418
11419         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11420             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11421             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11422                 goto nla_put_failure;
11423
11424         genlmsg_end(msg, hdr);
11425
11426         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11427                                 NL80211_MCGRP_MLME, gfp);
11428         return;
11429
11430  nla_put_failure:
11431         genlmsg_cancel(msg, hdr);
11432         nlmsg_free(msg);
11433 }
11434
11435 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11436                                         const u8* ie, u8 ie_len, gfp_t gfp)
11437 {
11438         struct wireless_dev *wdev = dev->ieee80211_ptr;
11439         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11440         struct sk_buff *msg;
11441         void *hdr;
11442
11443         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11444                 return;
11445
11446         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11447
11448         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11449         if (!msg)
11450                 return;
11451
11452         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11453         if (!hdr) {
11454                 nlmsg_free(msg);
11455                 return;
11456         }
11457
11458         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11459             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11460             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11461             (ie_len && ie &&
11462              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11463                 goto nla_put_failure;
11464
11465         genlmsg_end(msg, hdr);
11466
11467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11468                                 NL80211_MCGRP_MLME, gfp);
11469         return;
11470
11471  nla_put_failure:
11472         genlmsg_cancel(msg, hdr);
11473         nlmsg_free(msg);
11474 }
11475 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11476
11477 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11478                                  struct net_device *netdev, const u8 *addr,
11479                                  enum nl80211_key_type key_type, int key_id,
11480                                  const u8 *tsc, gfp_t gfp)
11481 {
11482         struct sk_buff *msg;
11483         void *hdr;
11484
11485         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11486         if (!msg)
11487                 return;
11488
11489         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11490         if (!hdr) {
11491                 nlmsg_free(msg);
11492                 return;
11493         }
11494
11495         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11496             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11497             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11498             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11499             (key_id != -1 &&
11500              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11501             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11502                 goto nla_put_failure;
11503
11504         genlmsg_end(msg, hdr);
11505
11506         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11507                                 NL80211_MCGRP_MLME, gfp);
11508         return;
11509
11510  nla_put_failure:
11511         genlmsg_cancel(msg, hdr);
11512         nlmsg_free(msg);
11513 }
11514
11515 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11516                                     struct ieee80211_channel *channel_before,
11517                                     struct ieee80211_channel *channel_after)
11518 {
11519         struct sk_buff *msg;
11520         void *hdr;
11521         struct nlattr *nl_freq;
11522
11523         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11524         if (!msg)
11525                 return;
11526
11527         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11528         if (!hdr) {
11529                 nlmsg_free(msg);
11530                 return;
11531         }
11532
11533         /*
11534          * Since we are applying the beacon hint to a wiphy we know its
11535          * wiphy_idx is valid
11536          */
11537         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11538                 goto nla_put_failure;
11539
11540         /* Before */
11541         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11542         if (!nl_freq)
11543                 goto nla_put_failure;
11544         if (nl80211_msg_put_channel(msg, channel_before, false))
11545                 goto nla_put_failure;
11546         nla_nest_end(msg, nl_freq);
11547
11548         /* After */
11549         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11550         if (!nl_freq)
11551                 goto nla_put_failure;
11552         if (nl80211_msg_put_channel(msg, channel_after, false))
11553                 goto nla_put_failure;
11554         nla_nest_end(msg, nl_freq);
11555
11556         genlmsg_end(msg, hdr);
11557
11558         rcu_read_lock();
11559         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11560                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11561         rcu_read_unlock();
11562
11563         return;
11564
11565 nla_put_failure:
11566         genlmsg_cancel(msg, hdr);
11567         nlmsg_free(msg);
11568 }
11569
11570 static void nl80211_send_remain_on_chan_event(
11571         int cmd, struct cfg80211_registered_device *rdev,
11572         struct wireless_dev *wdev, u64 cookie,
11573         struct ieee80211_channel *chan,
11574         unsigned int duration, gfp_t gfp)
11575 {
11576         struct sk_buff *msg;
11577         void *hdr;
11578
11579         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11580         if (!msg)
11581                 return;
11582
11583         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11584         if (!hdr) {
11585                 nlmsg_free(msg);
11586                 return;
11587         }
11588
11589         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11590             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11591                                          wdev->netdev->ifindex)) ||
11592             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11593             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11594             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11595                         NL80211_CHAN_NO_HT) ||
11596             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11597                 goto nla_put_failure;
11598
11599         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11600             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11601                 goto nla_put_failure;
11602
11603         genlmsg_end(msg, hdr);
11604
11605         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11606                                 NL80211_MCGRP_MLME, gfp);
11607         return;
11608
11609  nla_put_failure:
11610         genlmsg_cancel(msg, hdr);
11611         nlmsg_free(msg);
11612 }
11613
11614 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11615                                struct ieee80211_channel *chan,
11616                                unsigned int duration, gfp_t gfp)
11617 {
11618         struct wiphy *wiphy = wdev->wiphy;
11619         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11620
11621         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11622         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11623                                           rdev, wdev, cookie, chan,
11624                                           duration, gfp);
11625 }
11626 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11627
11628 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11629                                         struct ieee80211_channel *chan,
11630                                         gfp_t gfp)
11631 {
11632         struct wiphy *wiphy = wdev->wiphy;
11633         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11634
11635         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11636         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11637                                           rdev, wdev, cookie, chan, 0, gfp);
11638 }
11639 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11640
11641 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11642                       struct station_info *sinfo, gfp_t gfp)
11643 {
11644         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11645         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11646         struct sk_buff *msg;
11647
11648         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11649
11650         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11651         if (!msg)
11652                 return;
11653
11654         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11655                                  rdev, dev, mac_addr, sinfo) < 0) {
11656                 nlmsg_free(msg);
11657                 return;
11658         }
11659
11660         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11661                                 NL80211_MCGRP_MLME, gfp);
11662 }
11663 EXPORT_SYMBOL(cfg80211_new_sta);
11664
11665 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11666                             struct station_info *sinfo, gfp_t gfp)
11667 {
11668         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11669         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11670         struct sk_buff *msg;
11671         struct station_info empty_sinfo = {};
11672
11673         if (!sinfo)
11674                 sinfo = &empty_sinfo;
11675
11676         trace_cfg80211_del_sta(dev, mac_addr);
11677
11678         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11679         if (!msg)
11680                 return;
11681
11682         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11683                                  rdev, dev, mac_addr, sinfo)) {
11684                 nlmsg_free(msg);
11685                 return;
11686         }
11687
11688         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11689                                 NL80211_MCGRP_MLME, gfp);
11690 }
11691 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11692
11693 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11694                           enum nl80211_connect_failed_reason reason,
11695                           gfp_t gfp)
11696 {
11697         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11698         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11699         struct sk_buff *msg;
11700         void *hdr;
11701
11702         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11703         if (!msg)
11704                 return;
11705
11706         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11707         if (!hdr) {
11708                 nlmsg_free(msg);
11709                 return;
11710         }
11711
11712         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11713             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11714             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11715                 goto nla_put_failure;
11716
11717         genlmsg_end(msg, hdr);
11718
11719         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11720                                 NL80211_MCGRP_MLME, gfp);
11721         return;
11722
11723  nla_put_failure:
11724         genlmsg_cancel(msg, hdr);
11725         nlmsg_free(msg);
11726 }
11727 EXPORT_SYMBOL(cfg80211_conn_failed);
11728
11729 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11730                                        const u8 *addr, gfp_t gfp)
11731 {
11732         struct wireless_dev *wdev = dev->ieee80211_ptr;
11733         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11734         struct sk_buff *msg;
11735         void *hdr;
11736         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11737
11738         if (!nlportid)
11739                 return false;
11740
11741         msg = nlmsg_new(100, gfp);
11742         if (!msg)
11743                 return true;
11744
11745         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11746         if (!hdr) {
11747                 nlmsg_free(msg);
11748                 return true;
11749         }
11750
11751         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11752             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11753             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11754                 goto nla_put_failure;
11755
11756         genlmsg_end(msg, hdr);
11757         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11758         return true;
11759
11760  nla_put_failure:
11761         genlmsg_cancel(msg, hdr);
11762         nlmsg_free(msg);
11763         return true;
11764 }
11765
11766 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11767                                 const u8 *addr, gfp_t gfp)
11768 {
11769         struct wireless_dev *wdev = dev->ieee80211_ptr;
11770         bool ret;
11771
11772         trace_cfg80211_rx_spurious_frame(dev, addr);
11773
11774         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11775                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11776                 trace_cfg80211_return_bool(false);
11777                 return false;
11778         }
11779         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11780                                          addr, gfp);
11781         trace_cfg80211_return_bool(ret);
11782         return ret;
11783 }
11784 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11785
11786 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11787                                         const u8 *addr, gfp_t gfp)
11788 {
11789         struct wireless_dev *wdev = dev->ieee80211_ptr;
11790         bool ret;
11791
11792         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11793
11794         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11795                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11796                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11797                 trace_cfg80211_return_bool(false);
11798                 return false;
11799         }
11800         ret = __nl80211_unexpected_frame(dev,
11801                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11802                                          addr, gfp);
11803         trace_cfg80211_return_bool(ret);
11804         return ret;
11805 }
11806 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
11807
11808 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
11809                       struct wireless_dev *wdev, u32 nlportid,
11810                       int freq, int sig_dbm,
11811                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
11812 {
11813         struct net_device *netdev = wdev->netdev;
11814         struct sk_buff *msg;
11815         void *hdr;
11816
11817         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11818         if (!msg)
11819                 return -ENOMEM;
11820
11821         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
11822         if (!hdr) {
11823                 nlmsg_free(msg);
11824                 return -ENOMEM;
11825         }
11826
11827         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11828             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11829                                         netdev->ifindex)) ||
11830             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11831             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
11832             (sig_dbm &&
11833              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
11834             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11835             (flags &&
11836              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
11837                 goto nla_put_failure;
11838
11839         genlmsg_end(msg, hdr);
11840
11841         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11842
11843  nla_put_failure:
11844         genlmsg_cancel(msg, hdr);
11845         nlmsg_free(msg);
11846         return -ENOBUFS;
11847 }
11848
11849 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
11850                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
11851 {
11852         struct wiphy *wiphy = wdev->wiphy;
11853         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11854         struct net_device *netdev = wdev->netdev;
11855         struct sk_buff *msg;
11856         void *hdr;
11857
11858         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
11859
11860         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11861         if (!msg)
11862                 return;
11863
11864         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
11865         if (!hdr) {
11866                 nlmsg_free(msg);
11867                 return;
11868         }
11869
11870         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11871             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11872                                    netdev->ifindex)) ||
11873             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11874             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
11875             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
11876             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
11877                 goto nla_put_failure;
11878
11879         genlmsg_end(msg, hdr);
11880
11881         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11882                                 NL80211_MCGRP_MLME, gfp);
11883         return;
11884
11885  nla_put_failure:
11886         genlmsg_cancel(msg, hdr);
11887         nlmsg_free(msg);
11888 }
11889 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
11890
11891 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
11892                                             const char *mac, gfp_t gfp)
11893 {
11894         struct wireless_dev *wdev = dev->ieee80211_ptr;
11895         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11896         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11897         void **cb;
11898
11899         if (!msg)
11900                 return NULL;
11901
11902         cb = (void **)msg->cb;
11903
11904         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
11905         if (!cb[0]) {
11906                 nlmsg_free(msg);
11907                 return NULL;
11908         }
11909
11910         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11911             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
11912                 goto nla_put_failure;
11913
11914         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
11915                 goto nla_put_failure;
11916
11917         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
11918         if (!cb[1])
11919                 goto nla_put_failure;
11920
11921         cb[2] = rdev;
11922
11923         return msg;
11924  nla_put_failure:
11925         nlmsg_free(msg);
11926         return NULL;
11927 }
11928
11929 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
11930 {
11931         void **cb = (void **)msg->cb;
11932         struct cfg80211_registered_device *rdev = cb[2];
11933
11934         nla_nest_end(msg, cb[1]);
11935         genlmsg_end(msg, cb[0]);
11936
11937         memset(msg->cb, 0, sizeof(msg->cb));
11938
11939         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11940                                 NL80211_MCGRP_MLME, gfp);
11941 }
11942
11943 void cfg80211_cqm_rssi_notify(struct net_device *dev,
11944                               enum nl80211_cqm_rssi_threshold_event rssi_event,
11945                               gfp_t gfp)
11946 {
11947         struct sk_buff *msg;
11948
11949         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
11950
11951         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
11952                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
11953                 return;
11954
11955         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
11956         if (!msg)
11957                 return;
11958
11959         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
11960                         rssi_event))
11961                 goto nla_put_failure;
11962
11963         cfg80211_send_cqm(msg, gfp);
11964
11965         return;
11966
11967  nla_put_failure:
11968         nlmsg_free(msg);
11969 }
11970 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
11971
11972 void cfg80211_cqm_txe_notify(struct net_device *dev,
11973                              const u8 *peer, u32 num_packets,
11974                              u32 rate, u32 intvl, gfp_t gfp)
11975 {
11976         struct sk_buff *msg;
11977
11978         msg = cfg80211_prepare_cqm(dev, peer, gfp);
11979         if (!msg)
11980                 return;
11981
11982         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
11983                 goto nla_put_failure;
11984
11985         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
11986                 goto nla_put_failure;
11987
11988         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
11989                 goto nla_put_failure;
11990
11991         cfg80211_send_cqm(msg, gfp);
11992         return;
11993
11994  nla_put_failure:
11995         nlmsg_free(msg);
11996 }
11997 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
11998
11999 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12000                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12001 {
12002         struct sk_buff *msg;
12003
12004         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12005
12006         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12007         if (!msg)
12008                 return;
12009
12010         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12011                 goto nla_put_failure;
12012
12013         cfg80211_send_cqm(msg, gfp);
12014         return;
12015
12016  nla_put_failure:
12017         nlmsg_free(msg);
12018 }
12019 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12020
12021 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12022 {
12023         struct sk_buff *msg;
12024
12025         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12026         if (!msg)
12027                 return;
12028
12029         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12030                 goto nla_put_failure;
12031
12032         cfg80211_send_cqm(msg, gfp);
12033         return;
12034
12035  nla_put_failure:
12036         nlmsg_free(msg);
12037 }
12038 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12039
12040 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12041                                      struct net_device *netdev, const u8 *bssid,
12042                                      const u8 *replay_ctr, gfp_t gfp)
12043 {
12044         struct sk_buff *msg;
12045         struct nlattr *rekey_attr;
12046         void *hdr;
12047
12048         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12049         if (!msg)
12050                 return;
12051
12052         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12053         if (!hdr) {
12054                 nlmsg_free(msg);
12055                 return;
12056         }
12057
12058         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12059             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12060             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12061                 goto nla_put_failure;
12062
12063         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12064         if (!rekey_attr)
12065                 goto nla_put_failure;
12066
12067         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12068                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12069                 goto nla_put_failure;
12070
12071         nla_nest_end(msg, rekey_attr);
12072
12073         genlmsg_end(msg, hdr);
12074
12075         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12076                                 NL80211_MCGRP_MLME, gfp);
12077         return;
12078
12079  nla_put_failure:
12080         genlmsg_cancel(msg, hdr);
12081         nlmsg_free(msg);
12082 }
12083
12084 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12085                                const u8 *replay_ctr, gfp_t gfp)
12086 {
12087         struct wireless_dev *wdev = dev->ieee80211_ptr;
12088         struct wiphy *wiphy = wdev->wiphy;
12089         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12090
12091         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12092         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12093 }
12094 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12095
12096 static void
12097 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12098                                struct net_device *netdev, int index,
12099                                const u8 *bssid, bool preauth, gfp_t gfp)
12100 {
12101         struct sk_buff *msg;
12102         struct nlattr *attr;
12103         void *hdr;
12104
12105         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12106         if (!msg)
12107                 return;
12108
12109         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12110         if (!hdr) {
12111                 nlmsg_free(msg);
12112                 return;
12113         }
12114
12115         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12116             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12117                 goto nla_put_failure;
12118
12119         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12120         if (!attr)
12121                 goto nla_put_failure;
12122
12123         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12124             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12125             (preauth &&
12126              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12127                 goto nla_put_failure;
12128
12129         nla_nest_end(msg, attr);
12130
12131         genlmsg_end(msg, hdr);
12132
12133         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12134                                 NL80211_MCGRP_MLME, gfp);
12135         return;
12136
12137  nla_put_failure:
12138         genlmsg_cancel(msg, hdr);
12139         nlmsg_free(msg);
12140 }
12141
12142 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12143                                      const u8 *bssid, bool preauth, gfp_t gfp)
12144 {
12145         struct wireless_dev *wdev = dev->ieee80211_ptr;
12146         struct wiphy *wiphy = wdev->wiphy;
12147         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12148
12149         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12150         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12151 }
12152 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12153
12154 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12155                                      struct net_device *netdev,
12156                                      struct cfg80211_chan_def *chandef,
12157                                      gfp_t gfp,
12158                                      enum nl80211_commands notif,
12159                                      u8 count)
12160 {
12161         struct sk_buff *msg;
12162         void *hdr;
12163
12164         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12165         if (!msg)
12166                 return;
12167
12168         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12169         if (!hdr) {
12170                 nlmsg_free(msg);
12171                 return;
12172         }
12173
12174         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12175                 goto nla_put_failure;
12176
12177         if (nl80211_send_chandef(msg, chandef))
12178                 goto nla_put_failure;
12179
12180         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12181             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12182                         goto nla_put_failure;
12183
12184         genlmsg_end(msg, hdr);
12185
12186         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12187                                 NL80211_MCGRP_MLME, gfp);
12188         return;
12189
12190  nla_put_failure:
12191         genlmsg_cancel(msg, hdr);
12192         nlmsg_free(msg);
12193 }
12194
12195 void cfg80211_ch_switch_notify(struct net_device *dev,
12196                                struct cfg80211_chan_def *chandef)
12197 {
12198         struct wireless_dev *wdev = dev->ieee80211_ptr;
12199         struct wiphy *wiphy = wdev->wiphy;
12200         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12201
12202         ASSERT_WDEV_LOCK(wdev);
12203
12204         trace_cfg80211_ch_switch_notify(dev, chandef);
12205
12206         wdev->chandef = *chandef;
12207         wdev->preset_chandef = *chandef;
12208         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12209                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12210 }
12211 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12212
12213 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12214                                        struct cfg80211_chan_def *chandef,
12215                                        u8 count)
12216 {
12217         struct wireless_dev *wdev = dev->ieee80211_ptr;
12218         struct wiphy *wiphy = wdev->wiphy;
12219         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12220
12221         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12222
12223         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12224                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12225 }
12226 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12227
12228 void
12229 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12230                      const struct cfg80211_chan_def *chandef,
12231                      enum nl80211_radar_event event,
12232                      struct net_device *netdev, gfp_t gfp)
12233 {
12234         struct sk_buff *msg;
12235         void *hdr;
12236
12237         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12238         if (!msg)
12239                 return;
12240
12241         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12242         if (!hdr) {
12243                 nlmsg_free(msg);
12244                 return;
12245         }
12246
12247         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12248                 goto nla_put_failure;
12249
12250         /* NOP and radar events don't need a netdev parameter */
12251         if (netdev) {
12252                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12253
12254                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12255                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12256                         goto nla_put_failure;
12257         }
12258
12259         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12260                 goto nla_put_failure;
12261
12262         if (nl80211_send_chandef(msg, chandef))
12263                 goto nla_put_failure;
12264
12265         genlmsg_end(msg, hdr);
12266
12267         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12268                                 NL80211_MCGRP_MLME, gfp);
12269         return;
12270
12271  nla_put_failure:
12272         genlmsg_cancel(msg, hdr);
12273         nlmsg_free(msg);
12274 }
12275
12276 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12277                            u64 cookie, bool acked, gfp_t gfp)
12278 {
12279         struct wireless_dev *wdev = dev->ieee80211_ptr;
12280         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12281         struct sk_buff *msg;
12282         void *hdr;
12283
12284         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12285
12286         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12287
12288         if (!msg)
12289                 return;
12290
12291         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12292         if (!hdr) {
12293                 nlmsg_free(msg);
12294                 return;
12295         }
12296
12297         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12298             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12299             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12300             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12301             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12302                 goto nla_put_failure;
12303
12304         genlmsg_end(msg, hdr);
12305
12306         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12307                                 NL80211_MCGRP_MLME, gfp);
12308         return;
12309
12310  nla_put_failure:
12311         genlmsg_cancel(msg, hdr);
12312         nlmsg_free(msg);
12313 }
12314 EXPORT_SYMBOL(cfg80211_probe_status);
12315
12316 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12317                                  const u8 *frame, size_t len,
12318                                  int freq, int sig_dbm)
12319 {
12320         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12321         struct sk_buff *msg;
12322         void *hdr;
12323         struct cfg80211_beacon_registration *reg;
12324
12325         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12326
12327         spin_lock_bh(&rdev->beacon_registrations_lock);
12328         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12329                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12330                 if (!msg) {
12331                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12332                         return;
12333                 }
12334
12335                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12336                 if (!hdr)
12337                         goto nla_put_failure;
12338
12339                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12340                     (freq &&
12341                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12342                     (sig_dbm &&
12343                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12344                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12345                         goto nla_put_failure;
12346
12347                 genlmsg_end(msg, hdr);
12348
12349                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12350         }
12351         spin_unlock_bh(&rdev->beacon_registrations_lock);
12352         return;
12353
12354  nla_put_failure:
12355         spin_unlock_bh(&rdev->beacon_registrations_lock);
12356         if (hdr)
12357                 genlmsg_cancel(msg, hdr);
12358         nlmsg_free(msg);
12359 }
12360 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12361
12362 #ifdef CONFIG_PM
12363 static int cfg80211_net_detect_results(struct sk_buff *msg,
12364                                        struct cfg80211_wowlan_wakeup *wakeup)
12365 {
12366         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12367         struct nlattr *nl_results, *nl_match, *nl_freqs;
12368         int i, j;
12369
12370         nl_results = nla_nest_start(
12371                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12372         if (!nl_results)
12373                 return -EMSGSIZE;
12374
12375         for (i = 0; i < nd->n_matches; i++) {
12376                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12377
12378                 nl_match = nla_nest_start(msg, i);
12379                 if (!nl_match)
12380                         break;
12381
12382                 /* The SSID attribute is optional in nl80211, but for
12383                  * simplicity reasons it's always present in the
12384                  * cfg80211 structure.  If a driver can't pass the
12385                  * SSID, that needs to be changed.  A zero length SSID
12386                  * is still a valid SSID (wildcard), so it cannot be
12387                  * used for this purpose.
12388                  */
12389                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12390                             match->ssid.ssid)) {
12391                         nla_nest_cancel(msg, nl_match);
12392                         goto out;
12393                 }
12394
12395                 if (match->n_channels) {
12396                         nl_freqs = nla_nest_start(
12397                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12398                         if (!nl_freqs) {
12399                                 nla_nest_cancel(msg, nl_match);
12400                                 goto out;
12401                         }
12402
12403                         for (j = 0; j < match->n_channels; j++) {
12404                                 if (nla_put_u32(msg,
12405                                                 NL80211_ATTR_WIPHY_FREQ,
12406                                                 match->channels[j])) {
12407                                         nla_nest_cancel(msg, nl_freqs);
12408                                         nla_nest_cancel(msg, nl_match);
12409                                         goto out;
12410                                 }
12411                         }
12412
12413                         nla_nest_end(msg, nl_freqs);
12414                 }
12415
12416                 nla_nest_end(msg, nl_match);
12417         }
12418
12419 out:
12420         nla_nest_end(msg, nl_results);
12421         return 0;
12422 }
12423
12424 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12425                                    struct cfg80211_wowlan_wakeup *wakeup,
12426                                    gfp_t gfp)
12427 {
12428         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12429         struct sk_buff *msg;
12430         void *hdr;
12431         int size = 200;
12432
12433         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12434
12435         if (wakeup)
12436                 size += wakeup->packet_present_len;
12437
12438         msg = nlmsg_new(size, gfp);
12439         if (!msg)
12440                 return;
12441
12442         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12443         if (!hdr)
12444                 goto free_msg;
12445
12446         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12447             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12448                 goto free_msg;
12449
12450         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12451                                         wdev->netdev->ifindex))
12452                 goto free_msg;
12453
12454         if (wakeup) {
12455                 struct nlattr *reasons;
12456
12457                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12458                 if (!reasons)
12459                         goto free_msg;
12460
12461                 if (wakeup->disconnect &&
12462                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12463                         goto free_msg;
12464                 if (wakeup->magic_pkt &&
12465                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12466                         goto free_msg;
12467                 if (wakeup->gtk_rekey_failure &&
12468                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12469                         goto free_msg;
12470                 if (wakeup->eap_identity_req &&
12471                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12472                         goto free_msg;
12473                 if (wakeup->four_way_handshake &&
12474                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12475                         goto free_msg;
12476                 if (wakeup->rfkill_release &&
12477                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12478                         goto free_msg;
12479
12480                 if (wakeup->pattern_idx >= 0 &&
12481                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12482                                 wakeup->pattern_idx))
12483                         goto free_msg;
12484
12485                 if (wakeup->tcp_match &&
12486                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12487                         goto free_msg;
12488
12489                 if (wakeup->tcp_connlost &&
12490                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12491                         goto free_msg;
12492
12493                 if (wakeup->tcp_nomoretokens &&
12494                     nla_put_flag(msg,
12495                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12496                         goto free_msg;
12497
12498                 if (wakeup->packet) {
12499                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12500                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12501
12502                         if (!wakeup->packet_80211) {
12503                                 pkt_attr =
12504                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12505                                 len_attr =
12506                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12507                         }
12508
12509                         if (wakeup->packet_len &&
12510                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12511                                 goto free_msg;
12512
12513                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12514                                     wakeup->packet))
12515                                 goto free_msg;
12516                 }
12517
12518                 if (wakeup->net_detect &&
12519                     cfg80211_net_detect_results(msg, wakeup))
12520                                 goto free_msg;
12521
12522                 nla_nest_end(msg, reasons);
12523         }
12524
12525         genlmsg_end(msg, hdr);
12526
12527         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12528                                 NL80211_MCGRP_MLME, gfp);
12529         return;
12530
12531  free_msg:
12532         nlmsg_free(msg);
12533 }
12534 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12535 #endif
12536
12537 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12538                                 enum nl80211_tdls_operation oper,
12539                                 u16 reason_code, gfp_t gfp)
12540 {
12541         struct wireless_dev *wdev = dev->ieee80211_ptr;
12542         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12543         struct sk_buff *msg;
12544         void *hdr;
12545
12546         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12547                                          reason_code);
12548
12549         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12550         if (!msg)
12551                 return;
12552
12553         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12554         if (!hdr) {
12555                 nlmsg_free(msg);
12556                 return;
12557         }
12558
12559         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12560             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12561             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12562             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12563             (reason_code > 0 &&
12564              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12565                 goto nla_put_failure;
12566
12567         genlmsg_end(msg, hdr);
12568
12569         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12570                                 NL80211_MCGRP_MLME, gfp);
12571         return;
12572
12573  nla_put_failure:
12574         genlmsg_cancel(msg, hdr);
12575         nlmsg_free(msg);
12576 }
12577 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12578
12579 static int nl80211_netlink_notify(struct notifier_block * nb,
12580                                   unsigned long state,
12581                                   void *_notify)
12582 {
12583         struct netlink_notify *notify = _notify;
12584         struct cfg80211_registered_device *rdev;
12585         struct wireless_dev *wdev;
12586         struct cfg80211_beacon_registration *reg, *tmp;
12587
12588         if (state != NETLINK_URELEASE)
12589                 return NOTIFY_DONE;
12590
12591         rcu_read_lock();
12592
12593         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12594                 bool schedule_destroy_work = false;
12595                 bool schedule_scan_stop = false;
12596                 struct cfg80211_sched_scan_request *sched_scan_req =
12597                         rcu_dereference(rdev->sched_scan_req);
12598
12599                 if (sched_scan_req && notify->portid &&
12600                     sched_scan_req->owner_nlportid == notify->portid)
12601                         schedule_scan_stop = true;
12602
12603                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12604                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12605
12606                         if (wdev->owner_nlportid == notify->portid)
12607                                 schedule_destroy_work = true;
12608                 }
12609
12610                 spin_lock_bh(&rdev->beacon_registrations_lock);
12611                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12612                                          list) {
12613                         if (reg->nlportid == notify->portid) {
12614                                 list_del(&reg->list);
12615                                 kfree(reg);
12616                                 break;
12617                         }
12618                 }
12619                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12620
12621                 if (schedule_destroy_work) {
12622                         struct cfg80211_iface_destroy *destroy;
12623
12624                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12625                         if (destroy) {
12626                                 destroy->nlportid = notify->portid;
12627                                 spin_lock(&rdev->destroy_list_lock);
12628                                 list_add(&destroy->list, &rdev->destroy_list);
12629                                 spin_unlock(&rdev->destroy_list_lock);
12630                                 schedule_work(&rdev->destroy_work);
12631                         }
12632                 } else if (schedule_scan_stop) {
12633                         sched_scan_req->owner_nlportid = 0;
12634
12635                         if (rdev->ops->sched_scan_stop &&
12636                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12637                                 schedule_work(&rdev->sched_scan_stop_wk);
12638                 }
12639         }
12640
12641         rcu_read_unlock();
12642
12643         return NOTIFY_OK;
12644 }
12645
12646 static struct notifier_block nl80211_netlink_notifier = {
12647         .notifier_call = nl80211_netlink_notify,
12648 };
12649
12650 void cfg80211_ft_event(struct net_device *netdev,
12651                        struct cfg80211_ft_event_params *ft_event)
12652 {
12653         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12654         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12655         struct sk_buff *msg;
12656         void *hdr;
12657
12658         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12659
12660         if (!ft_event->target_ap)
12661                 return;
12662
12663         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12664         if (!msg)
12665                 return;
12666
12667         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12668         if (!hdr)
12669                 goto out;
12670
12671         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12672             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12673             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12674                 goto out;
12675
12676         if (ft_event->ies &&
12677             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12678                 goto out;
12679         if (ft_event->ric_ies &&
12680             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12681                     ft_event->ric_ies))
12682                 goto out;
12683
12684         genlmsg_end(msg, hdr);
12685
12686         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12687                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12688         return;
12689  out:
12690         nlmsg_free(msg);
12691 }
12692 EXPORT_SYMBOL(cfg80211_ft_event);
12693
12694 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12695 {
12696         struct cfg80211_registered_device *rdev;
12697         struct sk_buff *msg;
12698         void *hdr;
12699         u32 nlportid;
12700
12701         rdev = wiphy_to_rdev(wdev->wiphy);
12702         if (!rdev->crit_proto_nlportid)
12703                 return;
12704
12705         nlportid = rdev->crit_proto_nlportid;
12706         rdev->crit_proto_nlportid = 0;
12707
12708         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12709         if (!msg)
12710                 return;
12711
12712         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12713         if (!hdr)
12714                 goto nla_put_failure;
12715
12716         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12717             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12718                 goto nla_put_failure;
12719
12720         genlmsg_end(msg, hdr);
12721
12722         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12723         return;
12724
12725  nla_put_failure:
12726         if (hdr)
12727                 genlmsg_cancel(msg, hdr);
12728         nlmsg_free(msg);
12729
12730 }
12731 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12732
12733 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12734 {
12735         struct wiphy *wiphy = wdev->wiphy;
12736         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12737         struct sk_buff *msg;
12738         void *hdr;
12739
12740         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12741         if (!msg)
12742                 return;
12743
12744         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12745         if (!hdr)
12746                 goto out;
12747
12748         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12749             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12750             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12751                 goto out;
12752
12753         genlmsg_end(msg, hdr);
12754
12755         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12756                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12757         return;
12758  out:
12759         nlmsg_free(msg);
12760 }
12761
12762 /* initialisation/exit functions */
12763
12764 int nl80211_init(void)
12765 {
12766         int err;
12767
12768         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12769                                                    nl80211_mcgrps);
12770         if (err)
12771                 return err;
12772
12773         err = netlink_register_notifier(&nl80211_netlink_notifier);
12774         if (err)
12775                 goto err_out;
12776
12777         return 0;
12778  err_out:
12779         genl_unregister_family(&nl80211_fam);
12780         return err;
12781 }
12782
12783 void nl80211_exit(void)
12784 {
12785         netlink_unregister_notifier(&nl80211_netlink_notifier);
12786         genl_unregister_family(&nl80211_fam);
12787 }