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         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 401         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 402         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 403 };
 404
 405 /* policy for the key attributes */
 406 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 407         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 408         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 409         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 410         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 411         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 412         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 413         [NL80211_KEY_TYPE] = { .type = NLA_U32 },
 414         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 415 };
 416
 417 /* policy for the key default flags */
 418 static const struct nla_policy
 419 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 420         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 421         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 422 };
 423
 424 /* policy for WoWLAN attributes */
 425 static const struct nla_policy
 426 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 427         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 428         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 429         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 430         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 431         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 432         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 433         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 434         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 435         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 436         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 437 };
 438
 439 static const struct nla_policy
 440 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 441         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 442         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 443         [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN },
 444         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 445         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 446         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 },
 447         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 448                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 449         },
 450         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 451                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 452         },
 453         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 454         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 },
 455         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 },
 456 };
 457
 458 /* policy for coalesce rule attributes */
 459 static const struct nla_policy
 460 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 461         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 462         [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 },
 463         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 464 };
 465
 466 /* policy for GTK rekey offload attributes */
 467 static const struct nla_policy
 468 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 469         [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN },
 470         [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN },
 471         [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN },
 472 };
 473
 474 static const struct nla_policy
 475 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 476         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 477                                                  .len = IEEE80211_MAX_SSID_LEN },
 478         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 479 };
 480
 481 static int nl80211_prepare_wdev_dump(struct sk_buff *skb,
 482                                      struct netlink_callback *cb,
 483                                      struct cfg80211_registered_device **rdev,
 484                                      struct wireless_dev **wdev)
 485 {
 486         int err;
 487
 488         rtnl_lock();
 489
 490         if (!cb->args[0]) {
 491                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
 492                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
 493                                   nl80211_policy);
 494                 if (err)
 495                         goto out_unlock;
 496
 497                 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk),
 498                                                    nl80211_fam.attrbuf);
 499                 if (IS_ERR(*wdev)) {
 500                         err = PTR_ERR(*wdev);
 501                         goto out_unlock;
 502                 }
 503                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 504                 /* 0 is the first index - add 1 to parse only once */
 505                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 506                 cb->args[1] = (*wdev)->identifier;
 507         } else {
 508                 /* subtract the 1 again here */
 509                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 510                 struct wireless_dev *tmp;
 511
 512                 if (!wiphy) {
 513                         err = -ENODEV;
 514                         goto out_unlock;
 515                 }
 516                 *rdev = wiphy_to_rdev(wiphy);
 517                 *wdev = NULL;
 518
 519                 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) {
 520                         if (tmp->identifier == cb->args[1]) {
 521                                 *wdev = tmp;
 522                                 break;
 523                         }
 524                 }
 525
 526                 if (!*wdev) {
 527                         err = -ENODEV;
 528                         goto out_unlock;
 529                 }
 530         }
 531
 532         return 0;
 533  out_unlock:
 534         rtnl_unlock();
 535         return err;
 536 }
 537
 538 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev)
 539 {
 540         rtnl_unlock();
 541 }
 542
 543 /* IE validation */
 544 static bool is_valid_ie_attr(const struct nlattr *attr)
 545 {
 546         const u8 *pos;
 547         int len;
 548
 549         if (!attr)
 550                 return true;
 551
 552         pos = nla_data(attr);
 553         len = nla_len(attr);
 554
 555         while (len) {
 556                 u8 elemlen;
 557
 558                 if (len < 2)
 559                         return false;
 560                 len -= 2;
 561
 562                 elemlen = pos[1];
 563                 if (elemlen > len)
 564                         return false;
 565
 566                 len -= elemlen;
 567                 pos += 2 + elemlen;
 568         }
 569
 570         return true;
 571 }
 572
 573 /* message building helper */
 574 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 575                                    int flags, u8 cmd)
 576 {
 577         /* since there is no private header just add the generic one */
 578         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 579 }
 580
 581 static int nl80211_msg_put_channel(struct sk_buff *msg,
 582                                    struct ieee80211_channel *chan,
 583                                    bool large)
 584 {
 585         /* Some channels must be completely excluded from the
 586          * list to protect old user-space tools from breaking
 587          */
 588         if (!large && chan->flags &
 589             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 590                 return 0;
 591
 592         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 593                         chan->center_freq))
 594                 goto nla_put_failure;
 595
 596         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 597             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 598                 goto nla_put_failure;
 599         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 600                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 601                         goto nla_put_failure;
 602                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 603                         goto nla_put_failure;
 604         }
 605         if (chan->flags & IEEE80211_CHAN_RADAR) {
 606                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 607                         goto nla_put_failure;
 608                 if (large) {
 609                         u32 time;
 610
 611                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 612
 613                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 614                                         chan->dfs_state))
 615                                 goto nla_put_failure;
 616                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 617                                         time))
 618                                 goto nla_put_failure;
 619                         if (nla_put_u32(msg,
 620                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 621                                         chan->dfs_cac_ms))
 622                                 goto nla_put_failure;
 623                 }
 624         }
 625
 626         if (large) {
 627                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 628                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 629                         goto nla_put_failure;
 630                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 631                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 632                         goto nla_put_failure;
 633                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 634                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 635                         goto nla_put_failure;
 636                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 637                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 638                         goto nla_put_failure;
 639                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 640                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 641                         goto nla_put_failure;
 642                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 643                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 644                         goto nla_put_failure;
 645                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 646                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 647                         goto nla_put_failure;
 648                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 649                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 650                         goto nla_put_failure;
 651         }
 652
 653         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 654                         DBM_TO_MBM(chan->max_power)))
 655                 goto nla_put_failure;
 656
 657         return 0;
 658
 659  nla_put_failure:
 660         return -ENOBUFS;
 661 }
 662
 663 /* netlink command implementations */
 664
 665 struct key_parse {
 666         struct key_params p;
 667         int idx;
 668         int type;
 669         bool def, defmgmt;
 670         bool def_uni, def_multi;
 671 };
 672
 673 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k)
 674 {
 675         struct nlattr *tb[NL80211_KEY_MAX + 1];
 676         int err = nla_parse_nested(tb, NL80211_KEY_MAX, key,
 677                                    nl80211_key_policy);
 678         if (err)
 679                 return err;
 680
 681         k->def = !!tb[NL80211_KEY_DEFAULT];
 682         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
 683
 684         if (k->def) {
 685                 k->def_uni = true;
 686                 k->def_multi = true;
 687         }
 688         if (k->defmgmt)
 689                 k->def_multi = true;
 690
 691         if (tb[NL80211_KEY_IDX])
 692                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
 693
 694         if (tb[NL80211_KEY_DATA]) {
 695                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
 696                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
 697         }
 698
 699         if (tb[NL80211_KEY_SEQ]) {
 700                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
 701                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
 702         }
 703
 704         if (tb[NL80211_KEY_CIPHER])
 705                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
 706
 707         if (tb[NL80211_KEY_TYPE]) {
 708                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
 709                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 710                         return -EINVAL;
 711         }
 712
 713         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
 714                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 715                 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 716                                        tb[NL80211_KEY_DEFAULT_TYPES],
 717                                        nl80211_key_default_policy);
 718                 if (err)
 719                         return err;
 720
 721                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 722                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 723         }
 724
 725         return 0;
 726 }
 727
 728 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
 729 {
 730         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
 731                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
 732                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
 733         }
 734
 735         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
 736                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
 737                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
 738         }
 739
 740         if (info->attrs[NL80211_ATTR_KEY_IDX])
 741                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
 742
 743         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
 744                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
 745
 746         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
 747         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
 748
 749         if (k->def) {
 750                 k->def_uni = true;
 751                 k->def_multi = true;
 752         }
 753         if (k->defmgmt)
 754                 k->def_multi = true;
 755
 756         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
 757                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
 758                 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES)
 759                         return -EINVAL;
 760         }
 761
 762         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
 763                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
 764                 int err = nla_parse_nested(
 765                                 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1,
 766                                 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
 767                                 nl80211_key_default_policy);
 768                 if (err)
 769                         return err;
 770
 771                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
 772                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
 773         }
 774
 775         return 0;
 776 }
 777
 778 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
 779 {
 780         int err;
 781
 782         memset(k, 0, sizeof(*k));
 783         k->idx = -1;
 784         k->type = -1;
 785
 786         if (info->attrs[NL80211_ATTR_KEY])
 787                 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k);
 788         else
 789                 err = nl80211_parse_key_old(info, k);
 790
 791         if (err)
 792                 return err;
 793
 794         if (k->def && k->defmgmt)
 795                 return -EINVAL;
 796
 797         if (k->defmgmt) {
 798                 if (k->def_uni || !k->def_multi)
 799                         return -EINVAL;
 800         }
 801
 802         if (k->idx != -1) {
 803                 if (k->defmgmt) {
 804                         if (k->idx < 4 || k->idx > 5)
 805                                 return -EINVAL;
 806                 } else if (k->def) {
 807                         if (k->idx < 0 || k->idx > 3)
 808                                 return -EINVAL;
 809                 } else {
 810                         if (k->idx < 0 || k->idx > 5)
 811                                 return -EINVAL;
 812                 }
 813         }
 814
 815         return 0;
 816 }
 817
 818 static struct cfg80211_cached_keys *
 819 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
 820                        struct nlattr *keys, bool *no_ht)
 821 {
 822         struct key_parse parse;
 823         struct nlattr *key;
 824         struct cfg80211_cached_keys *result;
 825         int rem, err, def = 0;
 826
 827         result = kzalloc(sizeof(*result), GFP_KERNEL);
 828         if (!result)
 829                 return ERR_PTR(-ENOMEM);
 830
 831         result->def = -1;
 832         result->defmgmt = -1;
 833
 834         nla_for_each_nested(key, keys, rem) {
 835                 memset(&parse, 0, sizeof(parse));
 836                 parse.idx = -1;
 837
 838                 err = nl80211_parse_key_new(key, &parse);
 839                 if (err)
 840                         goto error;
 841                 err = -EINVAL;
 842                 if (!parse.p.key)
 843                         goto error;
 844                 if (parse.idx < 0 || parse.idx > 4)
 845                         goto error;
 846                 if (parse.def) {
 847                         if (def)
 848                                 goto error;
 849                         def = 1;
 850                         result->def = parse.idx;
 851                         if (!parse.def_uni || !parse.def_multi)
 852                                 goto error;
 853                 } else if (parse.defmgmt)
 854                         goto error;
 855                 err = cfg80211_validate_key_settings(rdev, &parse.p,
 856                                                      parse.idx, false, NULL);
 857                 if (err)
 858                         goto error;
 859                 result->params[parse.idx].cipher = parse.p.cipher;
 860                 result->params[parse.idx].key_len = parse.p.key_len;
 861                 result->params[parse.idx].key = result->data[parse.idx];
 862                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
 863
 864                 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 ||
 865                     parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) {
 866                         if (no_ht)
 867                                 *no_ht = true;
 868                 }
 869         }
 870
 871         return result;
 872  error:
 873         kfree(result);
 874         return ERR_PTR(err);
 875 }
 876
 877 static int nl80211_key_allowed(struct wireless_dev *wdev)
 878 {
 879         ASSERT_WDEV_LOCK(wdev);
 880
 881         switch (wdev->iftype) {
 882         case NL80211_IFTYPE_AP:
 883         case NL80211_IFTYPE_AP_VLAN:
 884         case NL80211_IFTYPE_P2P_GO:
 885         case NL80211_IFTYPE_MESH_POINT:
 886                 break;
 887         case NL80211_IFTYPE_ADHOC:
 888         case NL80211_IFTYPE_STATION:
 889         case NL80211_IFTYPE_P2P_CLIENT:
 890                 if (!wdev->current_bss)
 891                         return -ENOLINK;
 892                 break;
 893         case NL80211_IFTYPE_UNSPECIFIED:
 894         case NL80211_IFTYPE_OCB:
 895         case NL80211_IFTYPE_MONITOR:
 896         case NL80211_IFTYPE_P2P_DEVICE:
 897         case NL80211_IFTYPE_WDS:
 898         case NUM_NL80211_IFTYPES:
 899                 return -EINVAL;
 900         }
 901
 902         return 0;
 903 }
 904
 905 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
 906                                                         struct nlattr *tb)
 907 {
 908         struct ieee80211_channel *chan;
 909
 910         if (tb == NULL)
 911                 return NULL;
 912         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
 913         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
 914                 return NULL;
 915         return chan;
 916 }
 917
 918 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
 919 {
 920         struct nlattr *nl_modes = nla_nest_start(msg, attr);
 921         int i;
 922
 923         if (!nl_modes)
 924                 goto nla_put_failure;
 925
 926         i = 0;
 927         while (ifmodes) {
 928                 if ((ifmodes & 1) && nla_put_flag(msg, i))
 929                         goto nla_put_failure;
 930                 ifmodes >>= 1;
 931                 i++;
 932         }
 933
 934         nla_nest_end(msg, nl_modes);
 935         return 0;
 936
 937 nla_put_failure:
 938         return -ENOBUFS;
 939 }
 940
 941 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
 942                                           struct sk_buff *msg,
 943                                           bool large)
 944 {
 945         struct nlattr *nl_combis;
 946         int i, j;
 947
 948         nl_combis = nla_nest_start(msg,
 949                                 NL80211_ATTR_INTERFACE_COMBINATIONS);
 950         if (!nl_combis)
 951                 goto nla_put_failure;
 952
 953         for (i = 0; i < wiphy->n_iface_combinations; i++) {
 954                 const struct ieee80211_iface_combination *c;
 955                 struct nlattr *nl_combi, *nl_limits;
 956
 957                 c = &wiphy->iface_combinations[i];
 958
 959                 nl_combi = nla_nest_start(msg, i + 1);
 960                 if (!nl_combi)
 961                         goto nla_put_failure;
 962
 963                 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS);
 964                 if (!nl_limits)
 965                         goto nla_put_failure;
 966
 967                 for (j = 0; j < c->n_limits; j++) {
 968                         struct nlattr *nl_limit;
 969
 970                         nl_limit = nla_nest_start(msg, j + 1);
 971                         if (!nl_limit)
 972                                 goto nla_put_failure;
 973                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
 974                                         c->limits[j].max))
 975                                 goto nla_put_failure;
 976                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
 977                                                 c->limits[j].types))
 978                                 goto nla_put_failure;
 979                         nla_nest_end(msg, nl_limit);
 980                 }
 981
 982                 nla_nest_end(msg, nl_limits);
 983
 984                 if (c->beacon_int_infra_match &&
 985                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
 986                         goto nla_put_failure;
 987                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
 988                                 c->num_different_channels) ||
 989                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
 990                                 c->max_interfaces))
 991                         goto nla_put_failure;
 992                 if (large &&
 993                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
 994                                 c->radar_detect_widths) ||
 995                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
 996                                 c->radar_detect_regions)))
 997                         goto nla_put_failure;
 998
 999                 nla_nest_end(msg, nl_combi);
1000         }
1001
1002         nla_nest_end(msg, nl_combis);
1003
1004         return 0;
1005 nla_put_failure:
1006         return -ENOBUFS;
1007 }
1008
1009 #ifdef CONFIG_PM
1010 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1011                                         struct sk_buff *msg)
1012 {
1013         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1014         struct nlattr *nl_tcp;
1015
1016         if (!tcp)
1017                 return 0;
1018
1019         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1020         if (!nl_tcp)
1021                 return -ENOBUFS;
1022
1023         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1024                         tcp->data_payload_max))
1025                 return -ENOBUFS;
1026
1027         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1028                         tcp->data_payload_max))
1029                 return -ENOBUFS;
1030
1031         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1032                 return -ENOBUFS;
1033
1034         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1035                                 sizeof(*tcp->tok), tcp->tok))
1036                 return -ENOBUFS;
1037
1038         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1039                         tcp->data_interval_max))
1040                 return -ENOBUFS;
1041
1042         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1043                         tcp->wake_payload_max))
1044                 return -ENOBUFS;
1045
1046         nla_nest_end(msg, nl_tcp);
1047         return 0;
1048 }
1049
1050 static int nl80211_send_wowlan(struct sk_buff *msg,
1051                                struct cfg80211_registered_device *rdev,
1052                                bool large)
1053 {
1054         struct nlattr *nl_wowlan;
1055
1056         if (!rdev->wiphy.wowlan)
1057                 return 0;
1058
1059         nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1060         if (!nl_wowlan)
1061                 return -ENOBUFS;
1062
1063         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1064              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1065             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1066              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1067             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1068              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1069             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1070              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1071             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1072              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1073             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1074              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1075             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1076              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1077             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1078              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1079                 return -ENOBUFS;
1080
1081         if (rdev->wiphy.wowlan->n_patterns) {
1082                 struct nl80211_pattern_support pat = {
1083                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1084                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1085                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1086                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1087                 };
1088
1089                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1090                             sizeof(pat), &pat))
1091                         return -ENOBUFS;
1092         }
1093
1094         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1095             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1096                         rdev->wiphy.wowlan->max_nd_match_sets))
1097                 return -ENOBUFS;
1098
1099         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1100                 return -ENOBUFS;
1101
1102         nla_nest_end(msg, nl_wowlan);
1103
1104         return 0;
1105 }
1106 #endif
1107
1108 static int nl80211_send_coalesce(struct sk_buff *msg,
1109                                  struct cfg80211_registered_device *rdev)
1110 {
1111         struct nl80211_coalesce_rule_support rule;
1112
1113         if (!rdev->wiphy.coalesce)
1114                 return 0;
1115
1116         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1117         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1118         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1119         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1120         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1121         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1122
1123         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1124                 return -ENOBUFS;
1125
1126         return 0;
1127 }
1128
1129 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1130                                       struct ieee80211_supported_band *sband)
1131 {
1132         struct nlattr *nl_rates, *nl_rate;
1133         struct ieee80211_rate *rate;
1134         int i;
1135
1136         /* add HT info */
1137         if (sband->ht_cap.ht_supported &&
1138             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1139                      sizeof(sband->ht_cap.mcs),
1140                      &sband->ht_cap.mcs) ||
1141              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1142                          sband->ht_cap.cap) ||
1143              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1144                         sband->ht_cap.ampdu_factor) ||
1145              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1146                         sband->ht_cap.ampdu_density)))
1147                 return -ENOBUFS;
1148
1149         /* add VHT info */
1150         if (sband->vht_cap.vht_supported &&
1151             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1152                      sizeof(sband->vht_cap.vht_mcs),
1153                      &sband->vht_cap.vht_mcs) ||
1154              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1155                          sband->vht_cap.cap)))
1156                 return -ENOBUFS;
1157
1158         /* add bitrates */
1159         nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES);
1160         if (!nl_rates)
1161                 return -ENOBUFS;
1162
1163         for (i = 0; i < sband->n_bitrates; i++) {
1164                 nl_rate = nla_nest_start(msg, i);
1165                 if (!nl_rate)
1166                         return -ENOBUFS;
1167
1168                 rate = &sband->bitrates[i];
1169                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1170                                 rate->bitrate))
1171                         return -ENOBUFS;
1172                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1173                     nla_put_flag(msg,
1174                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1175                         return -ENOBUFS;
1176
1177                 nla_nest_end(msg, nl_rate);
1178         }
1179
1180         nla_nest_end(msg, nl_rates);
1181
1182         return 0;
1183 }
1184
1185 static int
1186 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1187                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1188 {
1189         u16 stypes;
1190         struct nlattr *nl_ftypes, *nl_ifs;
1191         enum nl80211_iftype ift;
1192         int i;
1193
1194         if (!mgmt_stypes)
1195                 return 0;
1196
1197         nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES);
1198         if (!nl_ifs)
1199                 return -ENOBUFS;
1200
1201         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1202                 nl_ftypes = nla_nest_start(msg, ift);
1203                 if (!nl_ftypes)
1204                         return -ENOBUFS;
1205                 i = 0;
1206                 stypes = mgmt_stypes[ift].tx;
1207                 while (stypes) {
1208                         if ((stypes & 1) &&
1209                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1210                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1211                                 return -ENOBUFS;
1212                         stypes >>= 1;
1213                         i++;
1214                 }
1215                 nla_nest_end(msg, nl_ftypes);
1216         }
1217
1218         nla_nest_end(msg, nl_ifs);
1219
1220         nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES);
1221         if (!nl_ifs)
1222                 return -ENOBUFS;
1223
1224         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1225                 nl_ftypes = nla_nest_start(msg, ift);
1226                 if (!nl_ftypes)
1227                         return -ENOBUFS;
1228                 i = 0;
1229                 stypes = mgmt_stypes[ift].rx;
1230                 while (stypes) {
1231                         if ((stypes & 1) &&
1232                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1233                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1234                                 return -ENOBUFS;
1235                         stypes >>= 1;
1236                         i++;
1237                 }
1238                 nla_nest_end(msg, nl_ftypes);
1239         }
1240         nla_nest_end(msg, nl_ifs);
1241
1242         return 0;
1243 }
1244
1245 struct nl80211_dump_wiphy_state {
1246         s64 filter_wiphy;
1247         long start;
1248         long split_start, band_start, chan_start;
1249         bool split;
1250 };
1251
1252 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1253                               enum nl80211_commands cmd,
1254                               struct sk_buff *msg, u32 portid, u32 seq,
1255                               int flags, struct nl80211_dump_wiphy_state *state)
1256 {
1257         void *hdr;
1258         struct nlattr *nl_bands, *nl_band;
1259         struct nlattr *nl_freqs, *nl_freq;
1260         struct nlattr *nl_cmds;
1261         enum ieee80211_band band;
1262         struct ieee80211_channel *chan;
1263         int i;
1264         const struct ieee80211_txrx_stypes *mgmt_stypes =
1265                                 rdev->wiphy.mgmt_stypes;
1266         u32 features;
1267
1268         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1269         if (!hdr)
1270                 return -ENOBUFS;
1271
1272         if (WARN_ON(!state))
1273                 return -EINVAL;
1274
1275         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1276             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1277                            wiphy_name(&rdev->wiphy)) ||
1278             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1279                         cfg80211_rdev_list_generation))
1280                 goto nla_put_failure;
1281
1282         if (cmd != NL80211_CMD_NEW_WIPHY)
1283                 goto finish;
1284
1285         switch (state->split_start) {
1286         case 0:
1287                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1288                                rdev->wiphy.retry_short) ||
1289                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1290                                rdev->wiphy.retry_long) ||
1291                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1292                                 rdev->wiphy.frag_threshold) ||
1293                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1294                                 rdev->wiphy.rts_threshold) ||
1295                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1296                                rdev->wiphy.coverage_class) ||
1297                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1298                                rdev->wiphy.max_scan_ssids) ||
1299                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1300                                rdev->wiphy.max_sched_scan_ssids) ||
1301                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1302                                 rdev->wiphy.max_scan_ie_len) ||
1303                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1304                                 rdev->wiphy.max_sched_scan_ie_len) ||
1305                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1306                                rdev->wiphy.max_match_sets))
1307                         goto nla_put_failure;
1308
1309                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1310                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1311                         goto nla_put_failure;
1312                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1313                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1314                         goto nla_put_failure;
1315                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1316                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1317                         goto nla_put_failure;
1318                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1319                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1320                         goto nla_put_failure;
1321                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1322                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1323                         goto nla_put_failure;
1324                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1325                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1326                         goto nla_put_failure;
1327                 state->split_start++;
1328                 if (state->split)
1329                         break;
1330         case 1:
1331                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1332                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1333                             rdev->wiphy.cipher_suites))
1334                         goto nla_put_failure;
1335
1336                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1337                                rdev->wiphy.max_num_pmkids))
1338                         goto nla_put_failure;
1339
1340                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1341                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1342                         goto nla_put_failure;
1343
1344                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1345                                 rdev->wiphy.available_antennas_tx) ||
1346                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1347                                 rdev->wiphy.available_antennas_rx))
1348                         goto nla_put_failure;
1349
1350                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
1351                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
1352                                 rdev->wiphy.probe_resp_offload))
1353                         goto nla_put_failure;
1354
1355                 if ((rdev->wiphy.available_antennas_tx ||
1356                      rdev->wiphy.available_antennas_rx) &&
1357                     rdev->ops->get_antenna) {
1358                         u32 tx_ant = 0, rx_ant = 0;
1359                         int res;
1360                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
1361                         if (!res) {
1362                                 if (nla_put_u32(msg,
1363                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
1364                                                 tx_ant) ||
1365                                     nla_put_u32(msg,
1366                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
1367                                                 rx_ant))
1368                                         goto nla_put_failure;
1369                         }
1370                 }
1371
1372                 state->split_start++;
1373                 if (state->split)
1374                         break;
1375         case 2:
1376                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
1377                                         rdev->wiphy.interface_modes))
1378                                 goto nla_put_failure;
1379                 state->split_start++;
1380                 if (state->split)
1381                         break;
1382         case 3:
1383                 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS);
1384                 if (!nl_bands)
1385                         goto nla_put_failure;
1386
1387                 for (band = state->band_start;
1388                      band < IEEE80211_NUM_BANDS; band++) {
1389                         struct ieee80211_supported_band *sband;
1390
1391                         sband = rdev->wiphy.bands[band];
1392
1393                         if (!sband)
1394                                 continue;
1395
1396                         nl_band = nla_nest_start(msg, band);
1397                         if (!nl_band)
1398                                 goto nla_put_failure;
1399
1400                         switch (state->chan_start) {
1401                         case 0:
1402                                 if (nl80211_send_band_rateinfo(msg, sband))
1403                                         goto nla_put_failure;
1404                                 state->chan_start++;
1405                                 if (state->split)
1406                                         break;
1407                         default:
1408                                 /* add frequencies */
1409                                 nl_freqs = nla_nest_start(
1410                                         msg, NL80211_BAND_ATTR_FREQS);
1411                                 if (!nl_freqs)
1412                                         goto nla_put_failure;
1413
1414                                 for (i = state->chan_start - 1;
1415                                      i < sband->n_channels;
1416                                      i++) {
1417                                         nl_freq = nla_nest_start(msg, i);
1418                                         if (!nl_freq)
1419                                                 goto nla_put_failure;
1420
1421                                         chan = &sband->channels[i];
1422
1423                                         if (nl80211_msg_put_channel(
1424                                                         msg, chan,
1425                                                         state->split))
1426                                                 goto nla_put_failure;
1427
1428                                         nla_nest_end(msg, nl_freq);
1429                                         if (state->split)
1430                                                 break;
1431                                 }
1432                                 if (i < sband->n_channels)
1433                                         state->chan_start = i + 2;
1434                                 else
1435                                         state->chan_start = 0;
1436                                 nla_nest_end(msg, nl_freqs);
1437                         }
1438
1439                         nla_nest_end(msg, nl_band);
1440
1441                         if (state->split) {
1442                                 /* start again here */
1443                                 if (state->chan_start)
1444                                         band--;
1445                                 break;
1446                         }
1447                 }
1448                 nla_nest_end(msg, nl_bands);
1449
1450                 if (band < IEEE80211_NUM_BANDS)
1451                         state->band_start = band + 1;
1452                 else
1453                         state->band_start = 0;
1454
1455                 /* if bands & channels are done, continue outside */
1456                 if (state->band_start == 0 && state->chan_start == 0)
1457                         state->split_start++;
1458                 if (state->split)
1459                         break;
1460         case 4:
1461                 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS);
1462                 if (!nl_cmds)
1463                         goto nla_put_failure;
1464
1465                 i = 0;
1466 #define CMD(op, n)                                                      \
1467                  do {                                                   \
1468                         if (rdev->ops->op) {                            \
1469                                 i++;                                    \
1470                                 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \
1471                                         goto nla_put_failure;           \
1472                         }                                               \
1473                 } while (0)
1474
1475                 CMD(add_virtual_intf, NEW_INTERFACE);
1476                 CMD(change_virtual_intf, SET_INTERFACE);
1477                 CMD(add_key, NEW_KEY);
1478                 CMD(start_ap, START_AP);
1479                 CMD(add_station, NEW_STATION);
1480                 CMD(add_mpath, NEW_MPATH);
1481                 CMD(update_mesh_config, SET_MESH_CONFIG);
1482                 CMD(change_bss, SET_BSS);
1483                 CMD(auth, AUTHENTICATE);
1484                 CMD(assoc, ASSOCIATE);
1485                 CMD(deauth, DEAUTHENTICATE);
1486                 CMD(disassoc, DISASSOCIATE);
1487                 CMD(join_ibss, JOIN_IBSS);
1488                 CMD(join_mesh, JOIN_MESH);
1489                 CMD(set_pmksa, SET_PMKSA);
1490                 CMD(del_pmksa, DEL_PMKSA);
1491                 CMD(flush_pmksa, FLUSH_PMKSA);
1492                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1493                         CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1494                 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1495                 CMD(mgmt_tx, FRAME);
1496                 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1497                 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1498                         i++;
1499                         if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1500                                 goto nla_put_failure;
1501                 }
1502                 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1503                     rdev->ops->join_mesh) {
1504                         i++;
1505                         if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1506                                 goto nla_put_failure;
1507                 }
1508                 CMD(set_wds_peer, SET_WDS_PEER);
1509                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1510                         CMD(tdls_mgmt, TDLS_MGMT);
1511                         CMD(tdls_oper, TDLS_OPER);
1512                 }
1513                 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
1514                         CMD(sched_scan_start, START_SCHED_SCAN);
1515                 CMD(probe_client, PROBE_CLIENT);
1516                 CMD(set_noack_map, SET_NOACK_MAP);
1517                 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1518                         i++;
1519                         if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1520                                 goto nla_put_failure;
1521                 }
1522                 CMD(start_p2p_device, START_P2P_DEVICE);
1523                 CMD(set_mcast_rate, SET_MCAST_RATE);
1524 #ifdef CONFIG_NL80211_TESTMODE
1525                 CMD(testmode_cmd, TESTMODE);
1526 #endif
1527                 if (state->split) {
1528                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
1529                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
1530                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
1531                                 CMD(channel_switch, CHANNEL_SWITCH);
1532                         CMD(set_qos_map, SET_QOS_MAP);
1533                         if (rdev->wiphy.features &
1534                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
1535                                 CMD(add_tx_ts, ADD_TX_TS);
1536                 }
1537                 /* add into the if now */
1538 #undef CMD
1539
1540                 if (rdev->ops->connect || rdev->ops->auth) {
1541                         i++;
1542                         if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1543                                 goto nla_put_failure;
1544                 }
1545
1546                 if (rdev->ops->disconnect || rdev->ops->deauth) {
1547                         i++;
1548                         if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1549                                 goto nla_put_failure;
1550                 }
1551
1552                 nla_nest_end(msg, nl_cmds);
1553                 state->split_start++;
1554                 if (state->split)
1555                         break;
1556         case 5:
1557                 if (rdev->ops->remain_on_channel &&
1558                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
1559                     nla_put_u32(msg,
1560                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
1561                                 rdev->wiphy.max_remain_on_channel_duration))
1562                         goto nla_put_failure;
1563
1564                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
1565                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
1566                         goto nla_put_failure;
1567
1568                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
1569                         goto nla_put_failure;
1570                 state->split_start++;
1571                 if (state->split)
1572                         break;
1573         case 6:
1574 #ifdef CONFIG_PM
1575                 if (nl80211_send_wowlan(msg, rdev, state->split))
1576                         goto nla_put_failure;
1577                 state->split_start++;
1578                 if (state->split)
1579                         break;
1580 #else
1581                 state->split_start++;
1582 #endif
1583         case 7:
1584                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
1585                                         rdev->wiphy.software_iftypes))
1586                         goto nla_put_failure;
1587
1588                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
1589                                                    state->split))
1590                         goto nla_put_failure;
1591
1592                 state->split_start++;
1593                 if (state->split)
1594                         break;
1595         case 8:
1596                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
1597                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
1598                                 rdev->wiphy.ap_sme_capa))
1599                         goto nla_put_failure;
1600
1601                 features = rdev->wiphy.features;
1602                 /*
1603                  * We can only add the per-channel limit information if the
1604                  * dump is split, otherwise it makes it too big. Therefore
1605                  * only advertise it in that case.
1606                  */
1607                 if (state->split)
1608                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
1609                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
1610                         goto nla_put_failure;
1611
1612                 if (rdev->wiphy.ht_capa_mod_mask &&
1613                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
1614                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
1615                             rdev->wiphy.ht_capa_mod_mask))
1616                         goto nla_put_failure;
1617
1618                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
1619                     rdev->wiphy.max_acl_mac_addrs &&
1620                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
1621                                 rdev->wiphy.max_acl_mac_addrs))
1622                         goto nla_put_failure;
1623
1624                 /*
1625                  * Any information below this point is only available to
1626                  * applications that can deal with it being split. This
1627                  * helps ensure that newly added capabilities don't break
1628                  * older tools by overrunning their buffers.
1629                  *
1630                  * We still increment split_start so that in the split
1631                  * case we'll continue with more data in the next round,
1632                  * but break unconditionally so unsplit data stops here.
1633                  */
1634                 state->split_start++;
1635                 break;
1636         case 9:
1637                 if (rdev->wiphy.extended_capabilities &&
1638                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
1639                              rdev->wiphy.extended_capabilities_len,
1640                              rdev->wiphy.extended_capabilities) ||
1641                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
1642                              rdev->wiphy.extended_capabilities_len,
1643                              rdev->wiphy.extended_capabilities_mask)))
1644                         goto nla_put_failure;
1645
1646                 if (rdev->wiphy.vht_capa_mod_mask &&
1647                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
1648                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
1649                             rdev->wiphy.vht_capa_mod_mask))
1650                         goto nla_put_failure;
1651
1652                 state->split_start++;
1653                 break;
1654         case 10:
1655                 if (nl80211_send_coalesce(msg, rdev))
1656                         goto nla_put_failure;
1657
1658                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
1659                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
1660                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
1661                         goto nla_put_failure;
1662
1663                 if (rdev->wiphy.max_ap_assoc_sta &&
1664                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
1665                                 rdev->wiphy.max_ap_assoc_sta))
1666                         goto nla_put_failure;
1667
1668                 state->split_start++;
1669                 break;
1670         case 11:
1671                 if (rdev->wiphy.n_vendor_commands) {
1672                         const struct nl80211_vendor_cmd_info *info;
1673                         struct nlattr *nested;
1674
1675                         nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
1676                         if (!nested)
1677                                 goto nla_put_failure;
1678
1679                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
1680                                 info = &rdev->wiphy.vendor_commands[i].info;
1681                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1682                                         goto nla_put_failure;
1683                         }
1684                         nla_nest_end(msg, nested);
1685                 }
1686
1687                 if (rdev->wiphy.n_vendor_events) {
1688                         const struct nl80211_vendor_cmd_info *info;
1689                         struct nlattr *nested;
1690
1691                         nested = nla_nest_start(msg,
1692                                                 NL80211_ATTR_VENDOR_EVENTS);
1693                         if (!nested)
1694                                 goto nla_put_failure;
1695
1696                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
1697                                 info = &rdev->wiphy.vendor_events[i];
1698                                 if (nla_put(msg, i + 1, sizeof(*info), info))
1699                                         goto nla_put_failure;
1700                         }
1701                         nla_nest_end(msg, nested);
1702                 }
1703                 state->split_start++;
1704                 break;
1705         case 12:
1706                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
1707                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
1708                                rdev->wiphy.max_num_csa_counters))
1709                         goto nla_put_failure;
1710
1711                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
1712                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
1713                         goto nla_put_failure;
1714
1715                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
1716                             sizeof(rdev->wiphy.ext_features),
1717                             rdev->wiphy.ext_features))
1718                         goto nla_put_failure;
1719
1720                 /* done */
1721                 state->split_start = 0;
1722                 break;
1723         }
1724  finish:
1725         genlmsg_end(msg, hdr);
1726         return 0;
1727
1728  nla_put_failure:
1729         genlmsg_cancel(msg, hdr);
1730         return -EMSGSIZE;
1731 }
1732
1733 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
1734                                     struct netlink_callback *cb,
1735                                     struct nl80211_dump_wiphy_state *state)
1736 {
1737         struct nlattr **tb = nl80211_fam.attrbuf;
1738         int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
1739                               tb, nl80211_fam.maxattr, nl80211_policy);
1740         /* ignore parse errors for backward compatibility */
1741         if (ret)
1742                 return 0;
1743
1744         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
1745         if (tb[NL80211_ATTR_WIPHY])
1746                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
1747         if (tb[NL80211_ATTR_WDEV])
1748                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
1749         if (tb[NL80211_ATTR_IFINDEX]) {
1750                 struct net_device *netdev;
1751                 struct cfg80211_registered_device *rdev;
1752                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
1753
1754                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
1755                 if (!netdev)
1756                         return -ENODEV;
1757                 if (netdev->ieee80211_ptr) {
1758                         rdev = wiphy_to_rdev(
1759                                 netdev->ieee80211_ptr->wiphy);
1760                         state->filter_wiphy = rdev->wiphy_idx;
1761                 }
1762         }
1763
1764         return 0;
1765 }
1766
1767 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
1768 {
1769         int idx = 0, ret;
1770         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
1771         struct cfg80211_registered_device *rdev;
1772
1773         rtnl_lock();
1774         if (!state) {
1775                 state = kzalloc(sizeof(*state), GFP_KERNEL);
1776                 if (!state) {
1777                         rtnl_unlock();
1778                         return -ENOMEM;
1779                 }
1780                 state->filter_wiphy = -1;
1781                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
1782                 if (ret) {
1783                         kfree(state);
1784                         rtnl_unlock();
1785                         return ret;
1786                 }
1787                 cb->args[0] = (long)state;
1788         }
1789
1790         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
1791                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
1792                         continue;
1793                 if (++idx <= state->start)
1794                         continue;
1795                 if (state->filter_wiphy != -1 &&
1796                     state->filter_wiphy != rdev->wiphy_idx)
1797                         continue;
1798                 /* attempt to fit multiple wiphy data chunks into the skb */
1799                 do {
1800                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
1801                                                  skb,
1802                                                  NETLINK_CB(cb->skb).portid,
1803                                                  cb->nlh->nlmsg_seq,
1804                                                  NLM_F_MULTI, state);
1805                         if (ret < 0) {
1806                                 /*
1807                                  * If sending the wiphy data didn't fit (ENOBUFS
1808                                  * or EMSGSIZE returned), this SKB is still
1809                                  * empty (so it's not too big because another
1810                                  * wiphy dataset is already in the skb) and
1811                                  * we've not tried to adjust the dump allocation
1812                                  * yet ... then adjust the alloc size to be
1813                                  * bigger, and return 1 but with the empty skb.
1814                                  * This results in an empty message being RX'ed
1815                                  * in userspace, but that is ignored.
1816                                  *
1817                                  * We can then retry with the larger buffer.
1818                                  */
1819                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
1820                                     !skb->len && !state->split &&
1821                                     cb->min_dump_alloc < 4096) {
1822                                         cb->min_dump_alloc = 4096;
1823                                         state->split_start = 0;
1824                                         rtnl_unlock();
1825                                         return 1;
1826                                 }
1827                                 idx--;
1828                                 break;
1829                         }
1830                 } while (state->split_start > 0);
1831                 break;
1832         }
1833         rtnl_unlock();
1834
1835         state->start = idx;
1836
1837         return skb->len;
1838 }
1839
1840 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
1841 {
1842         kfree((void *)cb->args[0]);
1843         return 0;
1844 }
1845
1846 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
1847 {
1848         struct sk_buff *msg;
1849         struct cfg80211_registered_device *rdev = info->user_ptr[0];
1850         struct nl80211_dump_wiphy_state state = {};
1851
1852         msg = nlmsg_new(4096, GFP_KERNEL);
1853         if (!msg)
1854                 return -ENOMEM;
1855
1856         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
1857                                info->snd_portid, info->snd_seq, 0,
1858                                &state) < 0) {
1859                 nlmsg_free(msg);
1860                 return -ENOBUFS;
1861         }
1862
1863         return genlmsg_reply(msg, info);
1864 }
1865
1866 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
1867         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
1868         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
1869         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
1870         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
1871         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
1872 };
1873
1874 static int parse_txq_params(struct nlattr *tb[],
1875                             struct ieee80211_txq_params *txq_params)
1876 {
1877         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
1878             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
1879             !tb[NL80211_TXQ_ATTR_AIFS])
1880                 return -EINVAL;
1881
1882         txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
1883         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
1884         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
1885         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
1886         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
1887
1888         if (txq_params->ac >= NL80211_NUM_ACS)
1889                 return -EINVAL;
1890
1891         return 0;
1892 }
1893
1894 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
1895 {
1896         /*
1897          * You can only set the channel explicitly for WDS interfaces,
1898          * all others have their channel managed via their respective
1899          * "establish a connection" command (connect, join, ...)
1900          *
1901          * For AP/GO and mesh mode, the channel can be set with the
1902          * channel userspace API, but is only stored and passed to the
1903          * low-level driver when the AP starts or the mesh is joined.
1904          * This is for backward compatibility, userspace can also give
1905          * the channel in the start-ap or join-mesh commands instead.
1906          *
1907          * Monitors are special as they are normally slaved to
1908          * whatever else is going on, so they have their own special
1909          * operation to set the monitor channel if possible.
1910          */
1911         return !wdev ||
1912                 wdev->iftype == NL80211_IFTYPE_AP ||
1913                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
1914                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
1915                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
1916 }
1917
1918 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
1919                                  struct genl_info *info,
1920                                  struct cfg80211_chan_def *chandef)
1921 {
1922         u32 control_freq;
1923
1924         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
1925                 return -EINVAL;
1926
1927         control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
1928
1929         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
1930         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
1931         chandef->center_freq1 = control_freq;
1932         chandef->center_freq2 = 0;
1933
1934         /* Primary channel not allowed */
1935         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED)
1936                 return -EINVAL;
1937
1938         if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
1939                 enum nl80211_channel_type chantype;
1940
1941                 chantype = nla_get_u32(
1942                                 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
1943
1944                 switch (chantype) {
1945                 case NL80211_CHAN_NO_HT:
1946                 case NL80211_CHAN_HT20:
1947                 case NL80211_CHAN_HT40PLUS:
1948                 case NL80211_CHAN_HT40MINUS:
1949                         cfg80211_chandef_create(chandef, chandef->chan,
1950                                                 chantype);
1951                         break;
1952                 default:
1953                         return -EINVAL;
1954                 }
1955         } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
1956                 chandef->width =
1957                         nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]);
1958                 if (info->attrs[NL80211_ATTR_CENTER_FREQ1])
1959                         chandef->center_freq1 =
1960                                 nla_get_u32(
1961                                         info->attrs[NL80211_ATTR_CENTER_FREQ1]);
1962                 if (info->attrs[NL80211_ATTR_CENTER_FREQ2])
1963                         chandef->center_freq2 =
1964                                 nla_get_u32(
1965                                         info->attrs[NL80211_ATTR_CENTER_FREQ2]);
1966         }
1967
1968         if (!cfg80211_chandef_valid(chandef))
1969                 return -EINVAL;
1970
1971         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
1972                                      IEEE80211_CHAN_DISABLED))
1973                 return -EINVAL;
1974
1975         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
1976              chandef->width == NL80211_CHAN_WIDTH_10) &&
1977             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ))
1978                 return -EINVAL;
1979
1980         return 0;
1981 }
1982
1983 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
1984                                  struct net_device *dev,
1985                                  struct genl_info *info)
1986 {
1987         struct cfg80211_chan_def chandef;
1988         int result;
1989         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
1990         struct wireless_dev *wdev = NULL;
1991
1992         if (dev)
1993                 wdev = dev->ieee80211_ptr;
1994         if (!nl80211_can_set_dev_channel(wdev))
1995                 return -EOPNOTSUPP;
1996         if (wdev)
1997                 iftype = wdev->iftype;
1998
1999         result = nl80211_parse_chandef(rdev, info, &chandef);
2000         if (result)
2001                 return result;
2002
2003         switch (iftype) {
2004         case NL80211_IFTYPE_AP:
2005         case NL80211_IFTYPE_P2P_GO:
2006                 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) {
2007                         result = -EINVAL;
2008                         break;
2009                 }
2010                 if (wdev->beacon_interval) {
2011                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2012                             !(rdev->wiphy.features &
2013                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2014                                 result = -EBUSY;
2015                                 break;
2016                         }
2017
2018                         /* Only allow dynamic channel width changes */
2019                         if (chandef.chan != wdev->preset_chandef.chan) {
2020                                 result = -EBUSY;
2021                                 break;
2022                         }
2023                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2024                         if (result)
2025                                 break;
2026                 }
2027                 wdev->preset_chandef = chandef;
2028                 result = 0;
2029                 break;
2030         case NL80211_IFTYPE_MESH_POINT:
2031                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2032                 break;
2033         case NL80211_IFTYPE_MONITOR:
2034                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2035                 break;
2036         default:
2037                 result = -EINVAL;
2038         }
2039
2040         return result;
2041 }
2042
2043 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2044 {
2045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2046         struct net_device *netdev = info->user_ptr[1];
2047
2048         return __nl80211_set_channel(rdev, netdev, info);
2049 }
2050
2051 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2052 {
2053         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2054         struct net_device *dev = info->user_ptr[1];
2055         struct wireless_dev *wdev = dev->ieee80211_ptr;
2056         const u8 *bssid;
2057
2058         if (!info->attrs[NL80211_ATTR_MAC])
2059                 return -EINVAL;
2060
2061         if (netif_running(dev))
2062                 return -EBUSY;
2063
2064         if (!rdev->ops->set_wds_peer)
2065                 return -EOPNOTSUPP;
2066
2067         if (wdev->iftype != NL80211_IFTYPE_WDS)
2068                 return -EOPNOTSUPP;
2069
2070         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2071         return rdev_set_wds_peer(rdev, dev, bssid);
2072 }
2073
2074
2075 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2076 {
2077         struct cfg80211_registered_device *rdev;
2078         struct net_device *netdev = NULL;
2079         struct wireless_dev *wdev;
2080         int result = 0, rem_txq_params = 0;
2081         struct nlattr *nl_txq_params;
2082         u32 changed;
2083         u8 retry_short = 0, retry_long = 0;
2084         u32 frag_threshold = 0, rts_threshold = 0;
2085         u8 coverage_class = 0;
2086
2087         ASSERT_RTNL();
2088
2089         /*
2090          * Try to find the wiphy and netdev. Normally this
2091          * function shouldn't need the netdev, but this is
2092          * done for backward compatibility -- previously
2093          * setting the channel was done per wiphy, but now
2094          * it is per netdev. Previous userland like hostapd
2095          * also passed a netdev to set_wiphy, so that it is
2096          * possible to let that go to the right netdev!
2097          */
2098
2099         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2100                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2101
2102                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2103                 if (netdev && netdev->ieee80211_ptr)
2104                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2105                 else
2106                         netdev = NULL;
2107         }
2108
2109         if (!netdev) {
2110                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2111                                                   info->attrs);
2112                 if (IS_ERR(rdev))
2113                         return PTR_ERR(rdev);
2114                 wdev = NULL;
2115                 netdev = NULL;
2116                 result = 0;
2117         } else
2118                 wdev = netdev->ieee80211_ptr;
2119
2120         /*
2121          * end workaround code, by now the rdev is available
2122          * and locked, and wdev may or may not be NULL.
2123          */
2124
2125         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2126                 result = cfg80211_dev_rename(
2127                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2128
2129         if (result)
2130                 return result;
2131
2132         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2133                 struct ieee80211_txq_params txq_params;
2134                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2135
2136                 if (!rdev->ops->set_txq_params)
2137                         return -EOPNOTSUPP;
2138
2139                 if (!netdev)
2140                         return -EINVAL;
2141
2142                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2143                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2144                         return -EINVAL;
2145
2146                 if (!netif_running(netdev))
2147                         return -ENETDOWN;
2148
2149                 nla_for_each_nested(nl_txq_params,
2150                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2151                                     rem_txq_params) {
2152                         result = nla_parse(tb, NL80211_TXQ_ATTR_MAX,
2153                                            nla_data(nl_txq_params),
2154                                            nla_len(nl_txq_params),
2155                                            txq_params_policy);
2156                         if (result)
2157                                 return result;
2158                         result = parse_txq_params(tb, &txq_params);
2159                         if (result)
2160                                 return result;
2161
2162                         result = rdev_set_txq_params(rdev, netdev,
2163                                                      &txq_params);
2164                         if (result)
2165                                 return result;
2166                 }
2167         }
2168
2169         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2170                 result = __nl80211_set_channel(
2171                         rdev,
2172                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2173                         info);
2174                 if (result)
2175                         return result;
2176         }
2177
2178         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2179                 struct wireless_dev *txp_wdev = wdev;
2180                 enum nl80211_tx_power_setting type;
2181                 int idx, mbm = 0;
2182
2183                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2184                         txp_wdev = NULL;
2185
2186                 if (!rdev->ops->set_tx_power)
2187                         return -EOPNOTSUPP;
2188
2189                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2190                 type = nla_get_u32(info->attrs[idx]);
2191
2192                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2193                     (type != NL80211_TX_POWER_AUTOMATIC))
2194                         return -EINVAL;
2195
2196                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2197                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2198                         mbm = nla_get_u32(info->attrs[idx]);
2199                 }
2200
2201                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2202                 if (result)
2203                         return result;
2204         }
2205
2206         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2207             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2208                 u32 tx_ant, rx_ant;
2209                 if ((!rdev->wiphy.available_antennas_tx &&
2210                      !rdev->wiphy.available_antennas_rx) ||
2211                     !rdev->ops->set_antenna)
2212                         return -EOPNOTSUPP;
2213
2214                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
2215                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
2216
2217                 /* reject antenna configurations which don't match the
2218                  * available antenna masks, except for the "all" mask */
2219                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
2220                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
2221                         return -EINVAL;
2222
2223                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
2224                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
2225
2226                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
2227                 if (result)
2228                         return result;
2229         }
2230
2231         changed = 0;
2232
2233         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
2234                 retry_short = nla_get_u8(
2235                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
2236                 if (retry_short == 0)
2237                         return -EINVAL;
2238
2239                 changed |= WIPHY_PARAM_RETRY_SHORT;
2240         }
2241
2242         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
2243                 retry_long = nla_get_u8(
2244                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
2245                 if (retry_long == 0)
2246                         return -EINVAL;
2247
2248                 changed |= WIPHY_PARAM_RETRY_LONG;
2249         }
2250
2251         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
2252                 frag_threshold = nla_get_u32(
2253                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
2254                 if (frag_threshold < 256)
2255                         return -EINVAL;
2256
2257                 if (frag_threshold != (u32) -1) {
2258                         /*
2259                          * Fragments (apart from the last one) are required to
2260                          * have even length. Make the fragmentation code
2261                          * simpler by stripping LSB should someone try to use
2262                          * odd threshold value.
2263                          */
2264                         frag_threshold &= ~0x1;
2265                 }
2266                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
2267         }
2268
2269         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
2270                 rts_threshold = nla_get_u32(
2271                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
2272                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
2273         }
2274
2275         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
2276                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
2277                         return -EINVAL;
2278
2279                 coverage_class = nla_get_u8(
2280                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
2281                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
2282         }
2283
2284         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
2285                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
2286                         return -EOPNOTSUPP;
2287
2288                 changed |= WIPHY_PARAM_DYN_ACK;
2289         }
2290
2291         if (changed) {
2292                 u8 old_retry_short, old_retry_long;
2293                 u32 old_frag_threshold, old_rts_threshold;
2294                 u8 old_coverage_class;
2295
2296                 if (!rdev->ops->set_wiphy_params)
2297                         return -EOPNOTSUPP;
2298
2299                 old_retry_short = rdev->wiphy.retry_short;
2300                 old_retry_long = rdev->wiphy.retry_long;
2301                 old_frag_threshold = rdev->wiphy.frag_threshold;
2302                 old_rts_threshold = rdev->wiphy.rts_threshold;
2303                 old_coverage_class = rdev->wiphy.coverage_class;
2304
2305                 if (changed & WIPHY_PARAM_RETRY_SHORT)
2306                         rdev->wiphy.retry_short = retry_short;
2307                 if (changed & WIPHY_PARAM_RETRY_LONG)
2308                         rdev->wiphy.retry_long = retry_long;
2309                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
2310                         rdev->wiphy.frag_threshold = frag_threshold;
2311                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
2312                         rdev->wiphy.rts_threshold = rts_threshold;
2313                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
2314                         rdev->wiphy.coverage_class = coverage_class;
2315
2316                 result = rdev_set_wiphy_params(rdev, changed);
2317                 if (result) {
2318                         rdev->wiphy.retry_short = old_retry_short;
2319                         rdev->wiphy.retry_long = old_retry_long;
2320                         rdev->wiphy.frag_threshold = old_frag_threshold;
2321                         rdev->wiphy.rts_threshold = old_rts_threshold;
2322                         rdev->wiphy.coverage_class = old_coverage_class;
2323                 }
2324         }
2325         return 0;
2326 }
2327
2328 static inline u64 wdev_id(struct wireless_dev *wdev)
2329 {
2330         return (u64)wdev->identifier |
2331                ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32);
2332 }
2333
2334 static int nl80211_send_chandef(struct sk_buff *msg,
2335                                 const struct cfg80211_chan_def *chandef)
2336 {
2337         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
2338                 return -EINVAL;
2339
2340         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
2341                         chandef->chan->center_freq))
2342                 return -ENOBUFS;
2343         switch (chandef->width) {
2344         case NL80211_CHAN_WIDTH_20_NOHT:
2345         case NL80211_CHAN_WIDTH_20:
2346         case NL80211_CHAN_WIDTH_40:
2347                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2348                                 cfg80211_get_chandef_type(chandef)))
2349                         return -ENOBUFS;
2350                 break;
2351         default:
2352                 break;
2353         }
2354         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
2355                 return -ENOBUFS;
2356         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
2357                 return -ENOBUFS;
2358         if (chandef->center_freq2 &&
2359             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
2360                 return -ENOBUFS;
2361         return 0;
2362 }
2363
2364 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
2365                               struct cfg80211_registered_device *rdev,
2366                               struct wireless_dev *wdev, bool removal)
2367 {
2368         struct net_device *dev = wdev->netdev;
2369         u8 cmd = NL80211_CMD_NEW_INTERFACE;
2370         void *hdr;
2371
2372         if (removal)
2373                 cmd = NL80211_CMD_DEL_INTERFACE;
2374
2375         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2376         if (!hdr)
2377                 return -1;
2378
2379         if (dev &&
2380             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2381              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
2382                 goto nla_put_failure;
2383
2384         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2385             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
2386             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
2387             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
2388             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2389                         rdev->devlist_generation ^
2390                         (cfg80211_rdev_list_generation << 2)))
2391                 goto nla_put_failure;
2392
2393         if (rdev->ops->get_channel) {
2394                 int ret;
2395                 struct cfg80211_chan_def chandef;
2396
2397                 ret = rdev_get_channel(rdev, wdev, &chandef);
2398                 if (ret == 0) {
2399                         if (nl80211_send_chandef(msg, &chandef))
2400                                 goto nla_put_failure;
2401                 }
2402         }
2403
2404         if (wdev->ssid_len) {
2405                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
2406                         goto nla_put_failure;
2407         }
2408
2409         genlmsg_end(msg, hdr);
2410         return 0;
2411
2412  nla_put_failure:
2413         genlmsg_cancel(msg, hdr);
2414         return -EMSGSIZE;
2415 }
2416
2417 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
2418 {
2419         int wp_idx = 0;
2420         int if_idx = 0;
2421         int wp_start = cb->args[0];
2422         int if_start = cb->args[1];
2423         struct cfg80211_registered_device *rdev;
2424         struct wireless_dev *wdev;
2425
2426         rtnl_lock();
2427         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2428                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2429                         continue;
2430                 if (wp_idx < wp_start) {
2431                         wp_idx++;
2432                         continue;
2433                 }
2434                 if_idx = 0;
2435
2436                 list_for_each_entry(wdev, &rdev->wdev_list, list) {
2437                         if (if_idx < if_start) {
2438                                 if_idx++;
2439                                 continue;
2440                         }
2441                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
2442                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
2443                                                rdev, wdev, false) < 0) {
2444                                 goto out;
2445                         }
2446                         if_idx++;
2447                 }
2448
2449                 wp_idx++;
2450         }
2451  out:
2452         rtnl_unlock();
2453
2454         cb->args[0] = wp_idx;
2455         cb->args[1] = if_idx;
2456
2457         return skb->len;
2458 }
2459
2460 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
2461 {
2462         struct sk_buff *msg;
2463         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2464         struct wireless_dev *wdev = info->user_ptr[1];
2465
2466         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2467         if (!msg)
2468                 return -ENOMEM;
2469
2470         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2471                                rdev, wdev, false) < 0) {
2472                 nlmsg_free(msg);
2473                 return -ENOBUFS;
2474         }
2475
2476         return genlmsg_reply(msg, info);
2477 }
2478
2479 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
2480         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
2481         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
2482         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
2483         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
2484         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
2485         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
2486 };
2487
2488 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
2489 {
2490         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
2491         int flag;
2492
2493         *mntrflags = 0;
2494
2495         if (!nla)
2496                 return -EINVAL;
2497
2498         if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX,
2499                              nla, mntr_flags_policy))
2500                 return -EINVAL;
2501
2502         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
2503                 if (flags[flag])
2504                         *mntrflags |= (1<<flag);
2505
2506         return 0;
2507 }
2508
2509 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
2510                                struct net_device *netdev, u8 use_4addr,
2511                                enum nl80211_iftype iftype)
2512 {
2513         if (!use_4addr) {
2514                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
2515                         return -EBUSY;
2516                 return 0;
2517         }
2518
2519         switch (iftype) {
2520         case NL80211_IFTYPE_AP_VLAN:
2521                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
2522                         return 0;
2523                 break;
2524         case NL80211_IFTYPE_STATION:
2525                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
2526                         return 0;
2527                 break;
2528         default:
2529                 break;
2530         }
2531
2532         return -EOPNOTSUPP;
2533 }
2534
2535 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
2536 {
2537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2538         struct vif_params params;
2539         int err;
2540         enum nl80211_iftype otype, ntype;
2541         struct net_device *dev = info->user_ptr[1];
2542         u32 _flags, *flags = NULL;
2543         bool change = false;
2544
2545         memset(&params, 0, sizeof(params));
2546
2547         otype = ntype = dev->ieee80211_ptr->iftype;
2548
2549         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2550                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2551                 if (otype != ntype)
2552                         change = true;
2553                 if (ntype > NL80211_IFTYPE_MAX)
2554                         return -EINVAL;
2555         }
2556
2557         if (info->attrs[NL80211_ATTR_MESH_ID]) {
2558                 struct wireless_dev *wdev = dev->ieee80211_ptr;
2559
2560                 if (ntype != NL80211_IFTYPE_MESH_POINT)
2561                         return -EINVAL;
2562                 if (netif_running(dev))
2563                         return -EBUSY;
2564
2565                 wdev_lock(wdev);
2566                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2567                              IEEE80211_MAX_MESH_ID_LEN);
2568                 wdev->mesh_id_up_len =
2569                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2570                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2571                        wdev->mesh_id_up_len);
2572                 wdev_unlock(wdev);
2573         }
2574
2575         if (info->attrs[NL80211_ATTR_4ADDR]) {
2576                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2577                 change = true;
2578                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
2579                 if (err)
2580                         return err;
2581         } else {
2582                 params.use_4addr = -1;
2583         }
2584
2585         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
2586                 if (ntype != NL80211_IFTYPE_MONITOR)
2587                         return -EINVAL;
2588                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
2589                                           &_flags);
2590                 if (err)
2591                         return err;
2592
2593                 flags = &_flags;
2594                 change = true;
2595         }
2596
2597         if (flags && (*flags & MONITOR_FLAG_ACTIVE) &&
2598             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2599                 return -EOPNOTSUPP;
2600
2601         if (change)
2602                 err = cfg80211_change_iface(rdev, dev, ntype, flags, &params);
2603         else
2604                 err = 0;
2605
2606         if (!err && params.use_4addr != -1)
2607                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
2608
2609         return err;
2610 }
2611
2612 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
2613 {
2614         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2615         struct vif_params params;
2616         struct wireless_dev *wdev;
2617         struct sk_buff *msg, *event;
2618         int err;
2619         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
2620         u32 flags;
2621
2622         /* to avoid failing a new interface creation due to pending removal */
2623         cfg80211_destroy_ifaces(rdev);
2624
2625         memset(&params, 0, sizeof(params));
2626
2627         if (!info->attrs[NL80211_ATTR_IFNAME])
2628                 return -EINVAL;
2629
2630         if (info->attrs[NL80211_ATTR_IFTYPE]) {
2631                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
2632                 if (type > NL80211_IFTYPE_MAX)
2633                         return -EINVAL;
2634         }
2635
2636         if (!rdev->ops->add_virtual_intf ||
2637             !(rdev->wiphy.interface_modes & (1 << type)))
2638                 return -EOPNOTSUPP;
2639
2640         if ((type == NL80211_IFTYPE_P2P_DEVICE ||
2641              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
2642             info->attrs[NL80211_ATTR_MAC]) {
2643                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
2644                            ETH_ALEN);
2645                 if (!is_valid_ether_addr(params.macaddr))
2646                         return -EADDRNOTAVAIL;
2647         }
2648
2649         if (info->attrs[NL80211_ATTR_4ADDR]) {
2650                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
2651                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
2652                 if (err)
2653                         return err;
2654         }
2655
2656         err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ?
2657                                   info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL,
2658                                   &flags);
2659
2660         if (!err && (flags & MONITOR_FLAG_ACTIVE) &&
2661             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
2662                 return -EOPNOTSUPP;
2663
2664         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2665         if (!msg)
2666                 return -ENOMEM;
2667
2668         wdev = rdev_add_virtual_intf(rdev,
2669                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
2670                                 NET_NAME_USER, type, err ? NULL : &flags,
2671                                 &params);
2672         if (WARN_ON(!wdev)) {
2673                 nlmsg_free(msg);
2674                 return -EPROTO;
2675         } else if (IS_ERR(wdev)) {
2676                 nlmsg_free(msg);
2677                 return PTR_ERR(wdev);
2678         }
2679
2680         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
2681                 wdev->owner_nlportid = info->snd_portid;
2682
2683         switch (type) {
2684         case NL80211_IFTYPE_MESH_POINT:
2685                 if (!info->attrs[NL80211_ATTR_MESH_ID])
2686                         break;
2687                 wdev_lock(wdev);
2688                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
2689                              IEEE80211_MAX_MESH_ID_LEN);
2690                 wdev->mesh_id_up_len =
2691                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
2692                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
2693                        wdev->mesh_id_up_len);
2694                 wdev_unlock(wdev);
2695                 break;
2696         case NL80211_IFTYPE_P2P_DEVICE:
2697                 /*
2698                  * P2P Device doesn't have a netdev, so doesn't go
2699                  * through the netdev notifier and must be added here
2700                  */
2701                 mutex_init(&wdev->mtx);
2702                 INIT_LIST_HEAD(&wdev->event_list);
2703                 spin_lock_init(&wdev->event_lock);
2704                 INIT_LIST_HEAD(&wdev->mgmt_registrations);
2705                 spin_lock_init(&wdev->mgmt_registrations_lock);
2706
2707                 wdev->identifier = ++rdev->wdev_id;
2708                 list_add_rcu(&wdev->list, &rdev->wdev_list);
2709                 rdev->devlist_generation++;
2710                 break;
2711         default:
2712                 break;
2713         }
2714
2715         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
2716                                rdev, wdev, false) < 0) {
2717                 nlmsg_free(msg);
2718                 return -ENOBUFS;
2719         }
2720
2721         event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2722         if (event) {
2723                 if (nl80211_send_iface(event, 0, 0, 0,
2724                                        rdev, wdev, false) < 0) {
2725                         nlmsg_free(event);
2726                         goto out;
2727                 }
2728
2729                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2730                                         event, 0, NL80211_MCGRP_CONFIG,
2731                                         GFP_KERNEL);
2732         }
2733
2734 out:
2735         return genlmsg_reply(msg, info);
2736 }
2737
2738 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
2739 {
2740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2741         struct wireless_dev *wdev = info->user_ptr[1];
2742         struct sk_buff *msg;
2743         int status;
2744
2745         if (!rdev->ops->del_virtual_intf)
2746                 return -EOPNOTSUPP;
2747
2748         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2749         if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) {
2750                 nlmsg_free(msg);
2751                 msg = NULL;
2752         }
2753
2754         /*
2755          * If we remove a wireless device without a netdev then clear
2756          * user_ptr[1] so that nl80211_post_doit won't dereference it
2757          * to check if it needs to do dev_put(). Otherwise it crashes
2758          * since the wdev has been freed, unlike with a netdev where
2759          * we need the dev_put() for the netdev to really be freed.
2760          */
2761         if (!wdev->netdev)
2762                 info->user_ptr[1] = NULL;
2763
2764         status = rdev_del_virtual_intf(rdev, wdev);
2765         if (status >= 0 && msg)
2766                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
2767                                         msg, 0, NL80211_MCGRP_CONFIG,
2768                                         GFP_KERNEL);
2769         else
2770                 nlmsg_free(msg);
2771
2772         return status;
2773 }
2774
2775 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
2776 {
2777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2778         struct net_device *dev = info->user_ptr[1];
2779         u16 noack_map;
2780
2781         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
2782                 return -EINVAL;
2783
2784         if (!rdev->ops->set_noack_map)
2785                 return -EOPNOTSUPP;
2786
2787         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
2788
2789         return rdev_set_noack_map(rdev, dev, noack_map);
2790 }
2791
2792 struct get_key_cookie {
2793         struct sk_buff *msg;
2794         int error;
2795         int idx;
2796 };
2797
2798 static void get_key_callback(void *c, struct key_params *params)
2799 {
2800         struct nlattr *key;
2801         struct get_key_cookie *cookie = c;
2802
2803         if ((params->key &&
2804              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
2805                      params->key_len, params->key)) ||
2806             (params->seq &&
2807              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
2808                      params->seq_len, params->seq)) ||
2809             (params->cipher &&
2810              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
2811                          params->cipher)))
2812                 goto nla_put_failure;
2813
2814         key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY);
2815         if (!key)
2816                 goto nla_put_failure;
2817
2818         if ((params->key &&
2819              nla_put(cookie->msg, NL80211_KEY_DATA,
2820                      params->key_len, params->key)) ||
2821             (params->seq &&
2822              nla_put(cookie->msg, NL80211_KEY_SEQ,
2823                      params->seq_len, params->seq)) ||
2824             (params->cipher &&
2825              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
2826                          params->cipher)))
2827                 goto nla_put_failure;
2828
2829         if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx))
2830                 goto nla_put_failure;
2831
2832         nla_nest_end(cookie->msg, key);
2833
2834         return;
2835  nla_put_failure:
2836         cookie->error = 1;
2837 }
2838
2839 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
2840 {
2841         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2842         int err;
2843         struct net_device *dev = info->user_ptr[1];
2844         u8 key_idx = 0;
2845         const u8 *mac_addr = NULL;
2846         bool pairwise;
2847         struct get_key_cookie cookie = {
2848                 .error = 0,
2849         };
2850         void *hdr;
2851         struct sk_buff *msg;
2852
2853         if (info->attrs[NL80211_ATTR_KEY_IDX])
2854                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
2855
2856         if (key_idx > 5)
2857                 return -EINVAL;
2858
2859         if (info->attrs[NL80211_ATTR_MAC])
2860                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
2861
2862         pairwise = !!mac_addr;
2863         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
2864                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
2865                 if (kt >= NUM_NL80211_KEYTYPES)
2866                         return -EINVAL;
2867                 if (kt != NL80211_KEYTYPE_GROUP &&
2868                     kt != NL80211_KEYTYPE_PAIRWISE)
2869                         return -EINVAL;
2870                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
2871         }
2872
2873         if (!rdev->ops->get_key)
2874                 return -EOPNOTSUPP;
2875
2876         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
2877                 return -ENOENT;
2878
2879         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
2880         if (!msg)
2881                 return -ENOMEM;
2882
2883         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
2884                              NL80211_CMD_NEW_KEY);
2885         if (!hdr)
2886                 goto nla_put_failure;
2887
2888         cookie.msg = msg;
2889         cookie.idx = key_idx;
2890
2891         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
2892             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
2893                 goto nla_put_failure;
2894         if (mac_addr &&
2895             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
2896                 goto nla_put_failure;
2897
2898         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
2899                            get_key_callback);
2900
2901         if (err)
2902                 goto free_msg;
2903
2904         if (cookie.error)
2905                 goto nla_put_failure;
2906
2907         genlmsg_end(msg, hdr);
2908         return genlmsg_reply(msg, info);
2909
2910  nla_put_failure:
2911         err = -ENOBUFS;
2912  free_msg:
2913         nlmsg_free(msg);
2914         return err;
2915 }
2916
2917 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
2918 {
2919         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2920         struct key_parse key;
2921         int err;
2922         struct net_device *dev = info->user_ptr[1];
2923
2924         err = nl80211_parse_key(info, &key);
2925         if (err)
2926                 return err;
2927
2928         if (key.idx < 0)
2929                 return -EINVAL;
2930
2931         /* only support setting default key */
2932         if (!key.def && !key.defmgmt)
2933                 return -EINVAL;
2934
2935         wdev_lock(dev->ieee80211_ptr);
2936
2937         if (key.def) {
2938                 if (!rdev->ops->set_default_key) {
2939                         err = -EOPNOTSUPP;
2940                         goto out;
2941                 }
2942
2943                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2944                 if (err)
2945                         goto out;
2946
2947                 err = rdev_set_default_key(rdev, dev, key.idx,
2948                                                  key.def_uni, key.def_multi);
2949
2950                 if (err)
2951                         goto out;
2952
2953 #ifdef CONFIG_CFG80211_WEXT
2954                 dev->ieee80211_ptr->wext.default_key = key.idx;
2955 #endif
2956         } else {
2957                 if (key.def_uni || !key.def_multi) {
2958                         err = -EINVAL;
2959                         goto out;
2960                 }
2961
2962                 if (!rdev->ops->set_default_mgmt_key) {
2963                         err = -EOPNOTSUPP;
2964                         goto out;
2965                 }
2966
2967                 err = nl80211_key_allowed(dev->ieee80211_ptr);
2968                 if (err)
2969                         goto out;
2970
2971                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
2972                 if (err)
2973                         goto out;
2974
2975 #ifdef CONFIG_CFG80211_WEXT
2976                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
2977 #endif
2978         }
2979
2980  out:
2981         wdev_unlock(dev->ieee80211_ptr);
2982
2983         return err;
2984 }
2985
2986 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
2987 {
2988         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2989         int err;
2990         struct net_device *dev = info->user_ptr[1];
2991         struct key_parse key;
2992         const u8 *mac_addr = NULL;
2993
2994         err = nl80211_parse_key(info, &key);
2995         if (err)
2996                 return err;
2997
2998         if (!key.p.key)
2999                 return -EINVAL;
3000
3001         if (info->attrs[NL80211_ATTR_MAC])
3002                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3003
3004         if (key.type == -1) {
3005                 if (mac_addr)
3006                         key.type = NL80211_KEYTYPE_PAIRWISE;
3007                 else
3008                         key.type = NL80211_KEYTYPE_GROUP;
3009         }
3010
3011         /* for now */
3012         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3013             key.type != NL80211_KEYTYPE_GROUP)
3014                 return -EINVAL;
3015
3016         if (!rdev->ops->add_key)
3017                 return -EOPNOTSUPP;
3018
3019         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3020                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3021                                            mac_addr))
3022                 return -EINVAL;
3023
3024         wdev_lock(dev->ieee80211_ptr);
3025         err = nl80211_key_allowed(dev->ieee80211_ptr);
3026         if (!err)
3027                 err = rdev_add_key(rdev, dev, key.idx,
3028                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3029                                     mac_addr, &key.p);
3030         wdev_unlock(dev->ieee80211_ptr);
3031
3032         return err;
3033 }
3034
3035 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3036 {
3037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3038         int err;
3039         struct net_device *dev = info->user_ptr[1];
3040         u8 *mac_addr = NULL;
3041         struct key_parse key;
3042
3043         err = nl80211_parse_key(info, &key);
3044         if (err)
3045                 return err;
3046
3047         if (info->attrs[NL80211_ATTR_MAC])
3048                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3049
3050         if (key.type == -1) {
3051                 if (mac_addr)
3052                         key.type = NL80211_KEYTYPE_PAIRWISE;
3053                 else
3054                         key.type = NL80211_KEYTYPE_GROUP;
3055         }
3056
3057         /* for now */
3058         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3059             key.type != NL80211_KEYTYPE_GROUP)
3060                 return -EINVAL;
3061
3062         if (!rdev->ops->del_key)
3063                 return -EOPNOTSUPP;
3064
3065         wdev_lock(dev->ieee80211_ptr);
3066         err = nl80211_key_allowed(dev->ieee80211_ptr);
3067
3068         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
3069             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3070                 err = -ENOENT;
3071
3072         if (!err)
3073                 err = rdev_del_key(rdev, dev, key.idx,
3074                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3075                                    mac_addr);
3076
3077 #ifdef CONFIG_CFG80211_WEXT
3078         if (!err) {
3079                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
3080                         dev->ieee80211_ptr->wext.default_key = -1;
3081                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
3082                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
3083         }
3084 #endif
3085         wdev_unlock(dev->ieee80211_ptr);
3086
3087         return err;
3088 }
3089
3090 /* This function returns an error or the number of nested attributes */
3091 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
3092 {
3093         struct nlattr *attr;
3094         int n_entries = 0, tmp;
3095
3096         nla_for_each_nested(attr, nl_attr, tmp) {
3097                 if (nla_len(attr) != ETH_ALEN)
3098                         return -EINVAL;
3099
3100                 n_entries++;
3101         }
3102
3103         return n_entries;
3104 }
3105
3106 /*
3107  * This function parses ACL information and allocates memory for ACL data.
3108  * On successful return, the calling function is responsible to free the
3109  * ACL buffer returned by this function.
3110  */
3111 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
3112                                                 struct genl_info *info)
3113 {
3114         enum nl80211_acl_policy acl_policy;
3115         struct nlattr *attr;
3116         struct cfg80211_acl_data *acl;
3117         int i = 0, n_entries, tmp;
3118
3119         if (!wiphy->max_acl_mac_addrs)
3120                 return ERR_PTR(-EOPNOTSUPP);
3121
3122         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
3123                 return ERR_PTR(-EINVAL);
3124
3125         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
3126         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
3127             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
3128                 return ERR_PTR(-EINVAL);
3129
3130         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
3131                 return ERR_PTR(-EINVAL);
3132
3133         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
3134         if (n_entries < 0)
3135                 return ERR_PTR(n_entries);
3136
3137         if (n_entries > wiphy->max_acl_mac_addrs)
3138                 return ERR_PTR(-ENOTSUPP);
3139
3140         acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries),
3141                       GFP_KERNEL);
3142         if (!acl)
3143                 return ERR_PTR(-ENOMEM);
3144
3145         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
3146                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
3147                 i++;
3148         }
3149
3150         acl->n_acl_entries = n_entries;
3151         acl->acl_policy = acl_policy;
3152
3153         return acl;
3154 }
3155
3156 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
3157 {
3158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3159         struct net_device *dev = info->user_ptr[1];
3160         struct cfg80211_acl_data *acl;
3161         int err;
3162
3163         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3164             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3165                 return -EOPNOTSUPP;
3166
3167         if (!dev->ieee80211_ptr->beacon_interval)
3168                 return -EINVAL;
3169
3170         acl = parse_acl_data(&rdev->wiphy, info);
3171         if (IS_ERR(acl))
3172                 return PTR_ERR(acl);
3173
3174         err = rdev_set_mac_acl(rdev, dev, acl);
3175
3176         kfree(acl);
3177
3178         return err;
3179 }
3180
3181 static int nl80211_parse_beacon(struct nlattr *attrs[],
3182                                 struct cfg80211_beacon_data *bcn)
3183 {
3184         bool haveinfo = false;
3185
3186         if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) ||
3187             !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) ||
3188             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) ||
3189             !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP]))
3190                 return -EINVAL;
3191
3192         memset(bcn, 0, sizeof(*bcn));
3193
3194         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
3195                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
3196                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
3197                 if (!bcn->head_len)
3198                         return -EINVAL;
3199                 haveinfo = true;
3200         }
3201
3202         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
3203                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
3204                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
3205                 haveinfo = true;
3206         }
3207
3208         if (!haveinfo)
3209                 return -EINVAL;
3210
3211         if (attrs[NL80211_ATTR_IE]) {
3212                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
3213                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
3214         }
3215
3216         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
3217                 bcn->proberesp_ies =
3218                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3219                 bcn->proberesp_ies_len =
3220                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
3221         }
3222
3223         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
3224                 bcn->assocresp_ies =
3225                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3226                 bcn->assocresp_ies_len =
3227                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
3228         }
3229
3230         if (attrs[NL80211_ATTR_PROBE_RESP]) {
3231                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
3232                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
3233         }
3234
3235         return 0;
3236 }
3237
3238 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
3239                                    struct cfg80211_ap_settings *params)
3240 {
3241         struct wireless_dev *wdev;
3242         bool ret = false;
3243
3244         list_for_each_entry(wdev, &rdev->wdev_list, list) {
3245                 if (wdev->iftype != NL80211_IFTYPE_AP &&
3246                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
3247                         continue;
3248
3249                 if (!wdev->preset_chandef.chan)
3250                         continue;
3251
3252                 params->chandef = wdev->preset_chandef;
3253                 ret = true;
3254                 break;
3255         }
3256
3257         return ret;
3258 }
3259
3260 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
3261                                     enum nl80211_auth_type auth_type,
3262                                     enum nl80211_commands cmd)
3263 {
3264         if (auth_type > NL80211_AUTHTYPE_MAX)
3265                 return false;
3266
3267         switch (cmd) {
3268         case NL80211_CMD_AUTHENTICATE:
3269                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
3270                     auth_type == NL80211_AUTHTYPE_SAE)
3271                         return false;
3272                 return true;
3273         case NL80211_CMD_CONNECT:
3274         case NL80211_CMD_START_AP:
3275                 /* SAE not supported yet */
3276                 if (auth_type == NL80211_AUTHTYPE_SAE)
3277                         return false;
3278                 return true;
3279         default:
3280                 return false;
3281         }
3282 }
3283
3284 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
3285 {
3286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3287         struct net_device *dev = info->user_ptr[1];
3288         struct wireless_dev *wdev = dev->ieee80211_ptr;
3289         struct cfg80211_ap_settings params;
3290         int err;
3291
3292         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3293             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3294                 return -EOPNOTSUPP;
3295
3296         if (!rdev->ops->start_ap)
3297                 return -EOPNOTSUPP;
3298
3299         if (wdev->beacon_interval)
3300                 return -EALREADY;
3301
3302         memset(&params, 0, sizeof(params));
3303
3304         /* these are required for START_AP */
3305         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
3306             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
3307             !info->attrs[NL80211_ATTR_BEACON_HEAD])
3308                 return -EINVAL;
3309
3310         err = nl80211_parse_beacon(info->attrs, &params.beacon);
3311         if (err)
3312                 return err;
3313
3314         params.beacon_interval =
3315                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
3316         params.dtim_period =
3317                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
3318
3319         err = cfg80211_validate_beacon_int(rdev, params.beacon_interval);
3320         if (err)
3321                 return err;
3322
3323         /*
3324          * In theory, some of these attributes should be required here
3325          * but since they were not used when the command was originally
3326          * added, keep them optional for old user space programs to let
3327          * them continue to work with drivers that do not need the
3328          * additional information -- drivers must check!
3329          */
3330         if (info->attrs[NL80211_ATTR_SSID]) {
3331                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
3332                 params.ssid_len =
3333                         nla_len(info->attrs[NL80211_ATTR_SSID]);
3334                 if (params.ssid_len == 0 ||
3335                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
3336                         return -EINVAL;
3337         }
3338
3339         if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) {
3340                 params.hidden_ssid = nla_get_u32(
3341                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
3342                 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE &&
3343                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN &&
3344                     params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS)
3345                         return -EINVAL;
3346         }
3347
3348         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
3349
3350         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
3351                 params.auth_type = nla_get_u32(
3352                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
3353                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
3354                                              NL80211_CMD_START_AP))
3355                         return -EINVAL;
3356         } else
3357                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
3358
3359         err = nl80211_crypto_settings(rdev, info, &params.crypto,
3360                                       NL80211_MAX_NR_CIPHER_SUITES);
3361         if (err)
3362                 return err;
3363
3364         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
3365                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
3366                         return -EOPNOTSUPP;
3367                 params.inactivity_timeout = nla_get_u16(
3368                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
3369         }
3370
3371         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
3372                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3373                         return -EINVAL;
3374                 params.p2p_ctwindow =
3375                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
3376                 if (params.p2p_ctwindow > 127)
3377                         return -EINVAL;
3378                 if (params.p2p_ctwindow != 0 &&
3379                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
3380                         return -EINVAL;
3381         }
3382
3383         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
3384                 u8 tmp;
3385
3386                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3387                         return -EINVAL;
3388                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
3389                 if (tmp > 1)
3390                         return -EINVAL;
3391                 params.p2p_opp_ps = tmp;
3392                 if (params.p2p_opp_ps != 0 &&
3393                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
3394                         return -EINVAL;
3395         }
3396
3397         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3398                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
3399                 if (err)
3400                         return err;
3401         } else if (wdev->preset_chandef.chan) {
3402                 params.chandef = wdev->preset_chandef;
3403         } else if (!nl80211_get_ap_channel(rdev, &params))
3404                 return -EINVAL;
3405
3406         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
3407                                      wdev->iftype))
3408                 return -EINVAL;
3409
3410         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
3411                 params.acl = parse_acl_data(&rdev->wiphy, info);
3412                 if (IS_ERR(params.acl))
3413                         return PTR_ERR(params.acl);
3414         }
3415
3416         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
3417                 params.smps_mode =
3418                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
3419                 switch (params.smps_mode) {
3420                 case NL80211_SMPS_OFF:
3421                         break;
3422                 case NL80211_SMPS_STATIC:
3423                         if (!(rdev->wiphy.features &
3424                               NL80211_FEATURE_STATIC_SMPS))
3425                                 return -EINVAL;
3426                         break;
3427                 case NL80211_SMPS_DYNAMIC:
3428                         if (!(rdev->wiphy.features &
3429                               NL80211_FEATURE_DYNAMIC_SMPS))
3430                                 return -EINVAL;
3431                         break;
3432                 default:
3433                         return -EINVAL;
3434                 }
3435         } else {
3436                 params.smps_mode = NL80211_SMPS_OFF;
3437         }
3438
3439         wdev_lock(wdev);
3440         err = rdev_start_ap(rdev, dev, &params);
3441         if (!err) {
3442                 wdev->preset_chandef = params.chandef;
3443                 wdev->beacon_interval = params.beacon_interval;
3444                 wdev->chandef = params.chandef;
3445                 wdev->ssid_len = params.ssid_len;
3446                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
3447         }
3448         wdev_unlock(wdev);
3449
3450         kfree(params.acl);
3451
3452         return err;
3453 }
3454
3455 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
3456 {
3457         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3458         struct net_device *dev = info->user_ptr[1];
3459         struct wireless_dev *wdev = dev->ieee80211_ptr;
3460         struct cfg80211_beacon_data params;
3461         int err;
3462
3463         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3464             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3465                 return -EOPNOTSUPP;
3466
3467         if (!rdev->ops->change_beacon)
3468                 return -EOPNOTSUPP;
3469
3470         if (!wdev->beacon_interval)
3471                 return -EINVAL;
3472
3473         err = nl80211_parse_beacon(info->attrs, &params);
3474         if (err)
3475                 return err;
3476
3477         wdev_lock(wdev);
3478         err = rdev_change_beacon(rdev, dev, &params);
3479         wdev_unlock(wdev);
3480
3481         return err;
3482 }
3483
3484 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
3485 {
3486         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3487         struct net_device *dev = info->user_ptr[1];
3488
3489         return cfg80211_stop_ap(rdev, dev, false);
3490 }
3491
3492 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
3493         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
3494         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
3495         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
3496         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
3497         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
3498         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
3499 };
3500
3501 static int parse_station_flags(struct genl_info *info,
3502                                enum nl80211_iftype iftype,
3503                                struct station_parameters *params)
3504 {
3505         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
3506         struct nlattr *nla;
3507         int flag;
3508
3509         /*
3510          * Try parsing the new attribute first so userspace
3511          * can specify both for older kernels.
3512          */
3513         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
3514         if (nla) {
3515                 struct nl80211_sta_flag_update *sta_flags;
3516
3517                 sta_flags = nla_data(nla);
3518                 params->sta_flags_mask = sta_flags->mask;
3519                 params->sta_flags_set = sta_flags->set;
3520                 params->sta_flags_set &= params->sta_flags_mask;
3521                 if ((params->sta_flags_mask |
3522                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
3523                         return -EINVAL;
3524                 return 0;
3525         }
3526
3527         /* if present, parse the old attribute */
3528
3529         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
3530         if (!nla)
3531                 return 0;
3532
3533         if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX,
3534                              nla, sta_flags_policy))
3535                 return -EINVAL;
3536
3537         /*
3538          * Only allow certain flags for interface types so that
3539          * other attributes are silently ignored. Remember that
3540          * this is backward compatibility code with old userspace
3541          * and shouldn't be hit in other cases anyway.
3542          */
3543         switch (iftype) {
3544         case NL80211_IFTYPE_AP:
3545         case NL80211_IFTYPE_AP_VLAN:
3546         case NL80211_IFTYPE_P2P_GO:
3547                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3548                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
3549                                          BIT(NL80211_STA_FLAG_WME) |
3550                                          BIT(NL80211_STA_FLAG_MFP);
3551                 break;
3552         case NL80211_IFTYPE_P2P_CLIENT:
3553         case NL80211_IFTYPE_STATION:
3554                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
3555                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
3556                 break;
3557         case NL80211_IFTYPE_MESH_POINT:
3558                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3559                                          BIT(NL80211_STA_FLAG_MFP) |
3560                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
3561         default:
3562                 return -EINVAL;
3563         }
3564
3565         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
3566                 if (flags[flag]) {
3567                         params->sta_flags_set |= (1<<flag);
3568
3569                         /* no longer support new API additions in old API */
3570                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
3571                                 return -EINVAL;
3572                 }
3573         }
3574
3575         return 0;
3576 }
3577
3578 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info,
3579                                  int attr)
3580 {
3581         struct nlattr *rate;
3582         u32 bitrate;
3583         u16 bitrate_compat;
3584         enum nl80211_attrs rate_flg;
3585
3586         rate = nla_nest_start(msg, attr);
3587         if (!rate)
3588                 return false;
3589
3590         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
3591         bitrate = cfg80211_calculate_bitrate(info);
3592         /* report 16-bit bitrate only if we can */
3593         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
3594         if (bitrate > 0 &&
3595             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
3596                 return false;
3597         if (bitrate_compat > 0 &&
3598             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
3599                 return false;
3600
3601         switch (info->bw) {
3602         case RATE_INFO_BW_5:
3603                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
3604                 break;
3605         case RATE_INFO_BW_10:
3606                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
3607                 break;
3608         default:
3609                 WARN_ON(1);
3610                 /* fall through */
3611         case RATE_INFO_BW_20:
3612                 rate_flg = 0;
3613                 break;
3614         case RATE_INFO_BW_40:
3615                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
3616                 break;
3617         case RATE_INFO_BW_80:
3618                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
3619                 break;
3620         case RATE_INFO_BW_160:
3621                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
3622                 break;
3623         }
3624
3625         if (rate_flg && nla_put_flag(msg, rate_flg))
3626                 return false;
3627
3628         if (info->flags & RATE_INFO_FLAGS_MCS) {
3629                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
3630                         return false;
3631                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3632                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3633                         return false;
3634         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
3635                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
3636                         return false;
3637                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
3638                         return false;
3639                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
3640                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
3641                         return false;
3642         }
3643
3644         nla_nest_end(msg, rate);
3645         return true;
3646 }
3647
3648 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
3649                                int id)
3650 {
3651         void *attr;
3652         int i = 0;
3653
3654         if (!mask)
3655                 return true;
3656
3657         attr = nla_nest_start(msg, id);
3658         if (!attr)
3659                 return false;
3660
3661         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
3662                 if (!(mask & BIT(i)))
3663                         continue;
3664
3665                 if (nla_put_u8(msg, i, signal[i]))
3666                         return false;
3667         }
3668
3669         nla_nest_end(msg, attr);
3670
3671         return true;
3672 }
3673
3674 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
3675                                 u32 seq, int flags,
3676                                 struct cfg80211_registered_device *rdev,
3677                                 struct net_device *dev,
3678                                 const u8 *mac_addr, struct station_info *sinfo)
3679 {
3680         void *hdr;
3681         struct nlattr *sinfoattr, *bss_param;
3682
3683         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3684         if (!hdr)
3685                 return -1;
3686
3687         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3688             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
3689             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
3690                 goto nla_put_failure;
3691
3692         sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO);
3693         if (!sinfoattr)
3694                 goto nla_put_failure;
3695
3696 #define PUT_SINFO(attr, memb, type) do {                                \
3697         if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) &&           \
3698             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
3699                              sinfo->memb))                              \
3700                 goto nla_put_failure;                                   \
3701         } while (0)
3702
3703         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
3704         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
3705
3706         if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) |
3707                              BIT(NL80211_STA_INFO_RX_BYTES64)) &&
3708             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
3709                         (u32)sinfo->rx_bytes))
3710                 goto nla_put_failure;
3711
3712         if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) |
3713                              BIT(NL80211_STA_INFO_TX_BYTES64)) &&
3714             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
3715                         (u32)sinfo->tx_bytes))
3716                 goto nla_put_failure;
3717
3718         PUT_SINFO(RX_BYTES64, rx_bytes, u64);
3719         PUT_SINFO(TX_BYTES64, tx_bytes, u64);
3720         PUT_SINFO(LLID, llid, u16);
3721         PUT_SINFO(PLID, plid, u16);
3722         PUT_SINFO(PLINK_STATE, plink_state, u8);
3723
3724         switch (rdev->wiphy.signal_type) {
3725         case CFG80211_SIGNAL_TYPE_MBM:
3726                 PUT_SINFO(SIGNAL, signal, u8);
3727                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
3728                 break;
3729         default:
3730                 break;
3731         }
3732         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) {
3733                 if (!nl80211_put_signal(msg, sinfo->chains,
3734                                         sinfo->chain_signal,
3735                                         NL80211_STA_INFO_CHAIN_SIGNAL))
3736                         goto nla_put_failure;
3737         }
3738         if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
3739                 if (!nl80211_put_signal(msg, sinfo->chains,
3740                                         sinfo->chain_signal_avg,
3741                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
3742                         goto nla_put_failure;
3743         }
3744         if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) {
3745                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
3746                                           NL80211_STA_INFO_TX_BITRATE))
3747                         goto nla_put_failure;
3748         }
3749         if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) {
3750                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
3751                                           NL80211_STA_INFO_RX_BITRATE))
3752                         goto nla_put_failure;
3753         }
3754
3755         PUT_SINFO(RX_PACKETS, rx_packets, u32);
3756         PUT_SINFO(TX_PACKETS, tx_packets, u32);
3757         PUT_SINFO(TX_RETRIES, tx_retries, u32);
3758         PUT_SINFO(TX_FAILED, tx_failed, u32);
3759         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
3760         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
3761         PUT_SINFO(LOCAL_PM, local_pm, u32);
3762         PUT_SINFO(PEER_PM, peer_pm, u32);
3763         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
3764
3765         if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) {
3766                 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
3767                 if (!bss_param)
3768                         goto nla_put_failure;
3769
3770                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
3771                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
3772                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
3773                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
3774                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
3775                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
3776                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
3777                                sinfo->bss_param.dtim_period) ||
3778                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
3779                                 sinfo->bss_param.beacon_interval))
3780                         goto nla_put_failure;
3781
3782                 nla_nest_end(msg, bss_param);
3783         }
3784         if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) &&
3785             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
3786                     sizeof(struct nl80211_sta_flag_update),
3787                     &sinfo->sta_flags))
3788                 goto nla_put_failure;
3789
3790         PUT_SINFO(T_OFFSET, t_offset, u64);
3791         PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64);
3792         PUT_SINFO(BEACON_RX, rx_beacon, u64);
3793         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
3794
3795 #undef PUT_SINFO
3796
3797         if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) {
3798                 struct nlattr *tidsattr;
3799                 int tid;
3800
3801                 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS);
3802                 if (!tidsattr)
3803                         goto nla_put_failure;
3804
3805                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
3806                         struct cfg80211_tid_stats *tidstats;
3807                         struct nlattr *tidattr;
3808
3809                         tidstats = &sinfo->pertid[tid];
3810
3811                         if (!tidstats->filled)
3812                                 continue;
3813
3814                         tidattr = nla_nest_start(msg, tid + 1);
3815                         if (!tidattr)
3816                                 goto nla_put_failure;
3817
3818 #define PUT_TIDVAL(attr, memb, type) do {                               \
3819         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
3820             nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr,           \
3821                              tidstats->memb))                           \
3822                 goto nla_put_failure;                                   \
3823         } while (0)
3824
3825                         PUT_TIDVAL(RX_MSDU, rx_msdu, u64);
3826                         PUT_TIDVAL(TX_MSDU, tx_msdu, u64);
3827                         PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64);
3828                         PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64);
3829
3830 #undef PUT_TIDVAL
3831                         nla_nest_end(msg, tidattr);
3832                 }
3833
3834                 nla_nest_end(msg, tidsattr);
3835         }
3836
3837         nla_nest_end(msg, sinfoattr);
3838
3839         if (sinfo->assoc_req_ies_len &&
3840             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
3841                     sinfo->assoc_req_ies))
3842                 goto nla_put_failure;
3843
3844         genlmsg_end(msg, hdr);
3845         return 0;
3846
3847  nla_put_failure:
3848         genlmsg_cancel(msg, hdr);
3849         return -EMSGSIZE;
3850 }
3851
3852 static int nl80211_dump_station(struct sk_buff *skb,
3853                                 struct netlink_callback *cb)
3854 {
3855         struct station_info sinfo;
3856         struct cfg80211_registered_device *rdev;
3857         struct wireless_dev *wdev;
3858         u8 mac_addr[ETH_ALEN];
3859         int sta_idx = cb->args[2];
3860         int err;
3861
3862         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
3863         if (err)
3864                 return err;
3865
3866         if (!wdev->netdev) {
3867                 err = -EINVAL;
3868                 goto out_err;
3869         }
3870
3871         if (!rdev->ops->dump_station) {
3872                 err = -EOPNOTSUPP;
3873                 goto out_err;
3874         }
3875
3876         while (1) {
3877                 memset(&sinfo, 0, sizeof(sinfo));
3878                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
3879                                         mac_addr, &sinfo);
3880                 if (err == -ENOENT)
3881                         break;
3882                 if (err)
3883                         goto out_err;
3884
3885                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
3886                                 NETLINK_CB(cb->skb).portid,
3887                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
3888                                 rdev, wdev->netdev, mac_addr,
3889                                 &sinfo) < 0)
3890                         goto out;
3891
3892                 sta_idx++;
3893         }
3894
3895
3896  out:
3897         cb->args[2] = sta_idx;
3898         err = skb->len;
3899  out_err:
3900         nl80211_finish_wdev_dump(rdev);
3901
3902         return err;
3903 }
3904
3905 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
3906 {
3907         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3908         struct net_device *dev = info->user_ptr[1];
3909         struct station_info sinfo;
3910         struct sk_buff *msg;
3911         u8 *mac_addr = NULL;
3912         int err;
3913
3914         memset(&sinfo, 0, sizeof(sinfo));
3915
3916         if (!info->attrs[NL80211_ATTR_MAC])
3917                 return -EINVAL;
3918
3919         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3920
3921         if (!rdev->ops->get_station)
3922                 return -EOPNOTSUPP;
3923
3924         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
3925         if (err)
3926                 return err;
3927
3928         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3929         if (!msg)
3930                 return -ENOMEM;
3931
3932         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
3933                                  info->snd_portid, info->snd_seq, 0,
3934                                  rdev, dev, mac_addr, &sinfo) < 0) {
3935                 nlmsg_free(msg);
3936                 return -ENOBUFS;
3937         }
3938
3939         return genlmsg_reply(msg, info);
3940 }
3941
3942 int cfg80211_check_station_change(struct wiphy *wiphy,
3943                                   struct station_parameters *params,
3944                                   enum cfg80211_station_type statype)
3945 {
3946         if (params->listen_interval != -1)
3947                 return -EINVAL;
3948         if (params->aid &&
3949             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3950                 return -EINVAL;
3951
3952         /* When you run into this, adjust the code below for the new flag */
3953         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
3954
3955         switch (statype) {
3956         case CFG80211_STA_MESH_PEER_KERNEL:
3957         case CFG80211_STA_MESH_PEER_USER:
3958                 /*
3959                  * No ignoring the TDLS flag here -- the userspace mesh
3960                  * code doesn't have the bug of including TDLS in the
3961                  * mask everywhere.
3962                  */
3963                 if (params->sta_flags_mask &
3964                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
3965                                   BIT(NL80211_STA_FLAG_MFP) |
3966                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
3967                         return -EINVAL;
3968                 break;
3969         case CFG80211_STA_TDLS_PEER_SETUP:
3970         case CFG80211_STA_TDLS_PEER_ACTIVE:
3971                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
3972                         return -EINVAL;
3973                 /* ignore since it can't change */
3974                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3975                 break;
3976         default:
3977                 /* disallow mesh-specific things */
3978                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
3979                         return -EINVAL;
3980                 if (params->local_pm)
3981                         return -EINVAL;
3982                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
3983                         return -EINVAL;
3984         }
3985
3986         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
3987             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
3988                 /* TDLS can't be set, ... */
3989                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
3990                         return -EINVAL;
3991                 /*
3992                  * ... but don't bother the driver with it. This works around
3993                  * a hostapd/wpa_supplicant issue -- it always includes the
3994                  * TLDS_PEER flag in the mask even for AP mode.
3995                  */
3996                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
3997         }
3998
3999         if (statype != CFG80211_STA_TDLS_PEER_SETUP) {
4000                 /* reject other things that can't change */
4001                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
4002                         return -EINVAL;
4003                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
4004                         return -EINVAL;
4005                 if (params->supported_rates)
4006                         return -EINVAL;
4007                 if (params->ext_capab || params->ht_capa || params->vht_capa)
4008                         return -EINVAL;
4009         }
4010
4011         if (statype != CFG80211_STA_AP_CLIENT) {
4012                 if (params->vlan)
4013                         return -EINVAL;
4014         }
4015
4016         switch (statype) {
4017         case CFG80211_STA_AP_MLME_CLIENT:
4018                 /* Use this only for authorizing/unauthorizing a station */
4019                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
4020                         return -EOPNOTSUPP;
4021                 break;
4022         case CFG80211_STA_AP_CLIENT:
4023                 /* accept only the listed bits */
4024                 if (params->sta_flags_mask &
4025                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4026                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4027                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
4028                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4029                                   BIT(NL80211_STA_FLAG_WME) |
4030                                   BIT(NL80211_STA_FLAG_MFP)))
4031                         return -EINVAL;
4032
4033                 /* but authenticated/associated only if driver handles it */
4034                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4035                     params->sta_flags_mask &
4036                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4037                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4038                         return -EINVAL;
4039                 break;
4040         case CFG80211_STA_IBSS:
4041         case CFG80211_STA_AP_STA:
4042                 /* reject any changes other than AUTHORIZED */
4043                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
4044                         return -EINVAL;
4045                 break;
4046         case CFG80211_STA_TDLS_PEER_SETUP:
4047                 /* reject any changes other than AUTHORIZED or WME */
4048                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
4049                                                BIT(NL80211_STA_FLAG_WME)))
4050                         return -EINVAL;
4051                 /* force (at least) rates when authorizing */
4052                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
4053                     !params->supported_rates)
4054                         return -EINVAL;
4055                 break;
4056         case CFG80211_STA_TDLS_PEER_ACTIVE:
4057                 /* reject any changes */
4058                 return -EINVAL;
4059         case CFG80211_STA_MESH_PEER_KERNEL:
4060                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
4061                         return -EINVAL;
4062                 break;
4063         case CFG80211_STA_MESH_PEER_USER:
4064                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
4065                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
4066                         return -EINVAL;
4067                 break;
4068         }
4069
4070         return 0;
4071 }
4072 EXPORT_SYMBOL(cfg80211_check_station_change);
4073
4074 /*
4075  * Get vlan interface making sure it is running and on the right wiphy.
4076  */
4077 static struct net_device *get_vlan(struct genl_info *info,
4078                                    struct cfg80211_registered_device *rdev)
4079 {
4080         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
4081         struct net_device *v;
4082         int ret;
4083
4084         if (!vlanattr)
4085                 return NULL;
4086
4087         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
4088         if (!v)
4089                 return ERR_PTR(-ENODEV);
4090
4091         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
4092                 ret = -EINVAL;
4093                 goto error;
4094         }
4095
4096         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4097             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4098             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
4099                 ret = -EINVAL;
4100                 goto error;
4101         }
4102
4103         if (!netif_running(v)) {
4104                 ret = -ENETDOWN;
4105                 goto error;
4106         }
4107
4108         return v;
4109  error:
4110         dev_put(v);
4111         return ERR_PTR(ret);
4112 }
4113
4114 static const struct nla_policy
4115 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
4116         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
4117         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
4118 };
4119
4120 static int nl80211_parse_sta_wme(struct genl_info *info,
4121                                  struct station_parameters *params)
4122 {
4123         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
4124         struct nlattr *nla;
4125         int err;
4126
4127         /* parse WME attributes if present */
4128         if (!info->attrs[NL80211_ATTR_STA_WME])
4129                 return 0;
4130
4131         nla = info->attrs[NL80211_ATTR_STA_WME];
4132         err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla,
4133                                nl80211_sta_wme_policy);
4134         if (err)
4135                 return err;
4136
4137         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
4138                 params->uapsd_queues = nla_get_u8(
4139                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
4140         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
4141                 return -EINVAL;
4142
4143         if (tb[NL80211_STA_WME_MAX_SP])
4144                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
4145
4146         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
4147                 return -EINVAL;
4148
4149         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
4150
4151         return 0;
4152 }
4153
4154 static int nl80211_parse_sta_channel_info(struct genl_info *info,
4155                                       struct station_parameters *params)
4156 {
4157         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
4158                 params->supported_channels =
4159                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4160                 params->supported_channels_len =
4161                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
4162                 /*
4163                  * Need to include at least one (first channel, number of
4164                  * channels) tuple for each subband, and must have proper
4165                  * tuples for the rest of the data as well.
4166                  */
4167                 if (params->supported_channels_len < 2)
4168                         return -EINVAL;
4169                 if (params->supported_channels_len % 2)
4170                         return -EINVAL;
4171         }
4172
4173         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
4174                 params->supported_oper_classes =
4175                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4176                 params->supported_oper_classes_len =
4177                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
4178                 /*
4179                  * The value of the Length field of the Supported Operating
4180                  * Classes element is between 2 and 253.
4181                  */
4182                 if (params->supported_oper_classes_len < 2 ||
4183                     params->supported_oper_classes_len > 253)
4184                         return -EINVAL;
4185         }
4186         return 0;
4187 }
4188
4189 static int nl80211_set_station_tdls(struct genl_info *info,
4190                                     struct station_parameters *params)
4191 {
4192         int err;
4193         /* Dummy STA entry gets updated once the peer capabilities are known */
4194         if (info->attrs[NL80211_ATTR_PEER_AID])
4195                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4196         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4197                 params->ht_capa =
4198                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4199         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4200                 params->vht_capa =
4201                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4202
4203         err = nl80211_parse_sta_channel_info(info, params);
4204         if (err)
4205                 return err;
4206
4207         return nl80211_parse_sta_wme(info, params);
4208 }
4209
4210 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
4211 {
4212         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4213         struct net_device *dev = info->user_ptr[1];
4214         struct station_parameters params;
4215         u8 *mac_addr;
4216         int err;
4217
4218         memset(&params, 0, sizeof(params));
4219
4220         params.listen_interval = -1;
4221
4222         if (!rdev->ops->change_station)
4223                 return -EOPNOTSUPP;
4224
4225         if (info->attrs[NL80211_ATTR_STA_AID])
4226                 return -EINVAL;
4227
4228         if (!info->attrs[NL80211_ATTR_MAC])
4229                 return -EINVAL;
4230
4231         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4232
4233         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
4234                 params.supported_rates =
4235                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4236                 params.supported_rates_len =
4237                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4238         }
4239
4240         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4241                 params.capability =
4242                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4243                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4244         }
4245
4246         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4247                 params.ext_capab =
4248                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4249                 params.ext_capab_len =
4250                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4251         }
4252
4253         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4254                 return -EINVAL;
4255
4256         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4257                 return -EINVAL;
4258
4259         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4260                 params.plink_action =
4261                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4262                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4263                         return -EINVAL;
4264         }
4265
4266         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
4267                 params.plink_state =
4268                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
4269                 if (params.plink_state >= NUM_NL80211_PLINK_STATES)
4270                         return -EINVAL;
4271                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
4272         }
4273
4274         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) {
4275                 enum nl80211_mesh_power_mode pm = nla_get_u32(
4276                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
4277
4278                 if (pm <= NL80211_MESH_POWER_UNKNOWN ||
4279                     pm > NL80211_MESH_POWER_MAX)
4280                         return -EINVAL;
4281
4282                 params.local_pm = pm;
4283         }
4284
4285         /* Include parameters for TDLS peer (will check later) */
4286         err = nl80211_set_station_tdls(info, &params);
4287         if (err)
4288                 return err;
4289
4290         params.vlan = get_vlan(info, rdev);
4291         if (IS_ERR(params.vlan))
4292                 return PTR_ERR(params.vlan);
4293
4294         switch (dev->ieee80211_ptr->iftype) {
4295         case NL80211_IFTYPE_AP:
4296         case NL80211_IFTYPE_AP_VLAN:
4297         case NL80211_IFTYPE_P2P_GO:
4298         case NL80211_IFTYPE_P2P_CLIENT:
4299         case NL80211_IFTYPE_STATION:
4300         case NL80211_IFTYPE_ADHOC:
4301         case NL80211_IFTYPE_MESH_POINT:
4302                 break;
4303         default:
4304                 err = -EOPNOTSUPP;
4305                 goto out_put_vlan;
4306         }
4307
4308         /* driver will call cfg80211_check_station_change() */
4309         err = rdev_change_station(rdev, dev, mac_addr, &params);
4310
4311  out_put_vlan:
4312         if (params.vlan)
4313                 dev_put(params.vlan);
4314
4315         return err;
4316 }
4317
4318 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
4319 {
4320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4321         int err;
4322         struct net_device *dev = info->user_ptr[1];
4323         struct station_parameters params;
4324         u8 *mac_addr = NULL;
4325
4326         memset(&params, 0, sizeof(params));
4327
4328         if (!rdev->ops->add_station)
4329                 return -EOPNOTSUPP;
4330
4331         if (!info->attrs[NL80211_ATTR_MAC])
4332                 return -EINVAL;
4333
4334         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
4335                 return -EINVAL;
4336
4337         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
4338                 return -EINVAL;
4339
4340         if (!info->attrs[NL80211_ATTR_STA_AID] &&
4341             !info->attrs[NL80211_ATTR_PEER_AID])
4342                 return -EINVAL;
4343
4344         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4345         params.supported_rates =
4346                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4347         params.supported_rates_len =
4348                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
4349         params.listen_interval =
4350                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
4351
4352         if (info->attrs[NL80211_ATTR_PEER_AID])
4353                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
4354         else
4355                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
4356         if (!params.aid || params.aid > IEEE80211_MAX_AID)
4357                 return -EINVAL;
4358
4359         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
4360                 params.capability =
4361                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
4362                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
4363         }
4364
4365         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
4366                 params.ext_capab =
4367                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4368                 params.ext_capab_len =
4369                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
4370         }
4371
4372         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
4373                 params.ht_capa =
4374                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
4375
4376         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
4377                 params.vht_capa =
4378                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
4379
4380         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
4381                 params.opmode_notif_used = true;
4382                 params.opmode_notif =
4383                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
4384         }
4385
4386         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) {
4387                 params.plink_action =
4388                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
4389                 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS)
4390                         return -EINVAL;
4391         }
4392
4393         err = nl80211_parse_sta_channel_info(info, &params);
4394         if (err)
4395                 return err;
4396
4397         err = nl80211_parse_sta_wme(info, &params);
4398         if (err)
4399                 return err;
4400
4401         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
4402                 return -EINVAL;
4403
4404         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
4405          * as userspace might just pass through the capabilities from the IEs
4406          * directly, rather than enforcing this restriction and returning an
4407          * error in this case.
4408          */
4409         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
4410                 params.ht_capa = NULL;
4411                 params.vht_capa = NULL;
4412         }
4413
4414         /* When you run into this, adjust the code below for the new flag */
4415         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
4416
4417         switch (dev->ieee80211_ptr->iftype) {
4418         case NL80211_IFTYPE_AP:
4419         case NL80211_IFTYPE_AP_VLAN:
4420         case NL80211_IFTYPE_P2P_GO:
4421                 /* ignore WME attributes if iface/sta is not capable */
4422                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
4423                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
4424                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4425
4426                 /* TDLS peers cannot be added */
4427                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4428                     info->attrs[NL80211_ATTR_PEER_AID])
4429                         return -EINVAL;
4430                 /* but don't bother the driver with it */
4431                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
4432
4433                 /* allow authenticated/associated only if driver handles it */
4434                 if (!(rdev->wiphy.features &
4435                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
4436                     params.sta_flags_mask &
4437                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4438                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
4439                         return -EINVAL;
4440
4441                 /* must be last in here for error handling */
4442                 params.vlan = get_vlan(info, rdev);
4443                 if (IS_ERR(params.vlan))
4444                         return PTR_ERR(params.vlan);
4445                 break;
4446         case NL80211_IFTYPE_MESH_POINT:
4447                 /* ignore uAPSD data */
4448                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4449
4450                 /* associated is disallowed */
4451                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
4452                         return -EINVAL;
4453                 /* TDLS peers cannot be added */
4454                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
4455                     info->attrs[NL80211_ATTR_PEER_AID])
4456                         return -EINVAL;
4457                 break;
4458         case NL80211_IFTYPE_STATION:
4459         case NL80211_IFTYPE_P2P_CLIENT:
4460                 /* ignore uAPSD data */
4461                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
4462
4463                 /* these are disallowed */
4464                 if (params.sta_flags_mask &
4465                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
4466                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
4467                         return -EINVAL;
4468                 /* Only TDLS peers can be added */
4469                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
4470                         return -EINVAL;
4471                 /* Can only add if TDLS ... */
4472                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
4473                         return -EOPNOTSUPP;
4474                 /* ... with external setup is supported */
4475                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
4476                         return -EOPNOTSUPP;
4477                 /*
4478                  * Older wpa_supplicant versions always mark the TDLS peer
4479                  * as authorized, but it shouldn't yet be.
4480                  */
4481                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
4482                 break;
4483         default:
4484                 return -EOPNOTSUPP;
4485         }
4486
4487         /* be aware of params.vlan when changing code here */
4488
4489         err = rdev_add_station(rdev, dev, mac_addr, &params);
4490
4491         if (params.vlan)
4492                 dev_put(params.vlan);
4493         return err;
4494 }
4495
4496 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
4497 {
4498         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4499         struct net_device *dev = info->user_ptr[1];
4500         struct station_del_parameters params;
4501
4502         memset(&params, 0, sizeof(params));
4503
4504         if (info->attrs[NL80211_ATTR_MAC])
4505                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
4506
4507         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4508             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
4509             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
4510             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4511                 return -EINVAL;
4512
4513         if (!rdev->ops->del_station)
4514                 return -EOPNOTSUPP;
4515
4516         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
4517                 params.subtype =
4518                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
4519                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
4520                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
4521                         return -EINVAL;
4522         } else {
4523                 /* Default to Deauthentication frame */
4524                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
4525         }
4526
4527         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
4528                 params.reason_code =
4529                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
4530                 if (params.reason_code == 0)
4531                         return -EINVAL; /* 0 is reserved */
4532         } else {
4533                 /* Default to reason code 2 */
4534                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
4535         }
4536
4537         return rdev_del_station(rdev, dev, &params);
4538 }
4539
4540 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
4541                                 int flags, struct net_device *dev,
4542                                 u8 *dst, u8 *next_hop,
4543                                 struct mpath_info *pinfo)
4544 {
4545         void *hdr;
4546         struct nlattr *pinfoattr;
4547
4548         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
4549         if (!hdr)
4550                 return -1;
4551
4552         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4553             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
4554             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
4555             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
4556                 goto nla_put_failure;
4557
4558         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO);
4559         if (!pinfoattr)
4560                 goto nla_put_failure;
4561         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
4562             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
4563                         pinfo->frame_qlen))
4564                 goto nla_put_failure;
4565         if (((pinfo->filled & MPATH_INFO_SN) &&
4566              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
4567             ((pinfo->filled & MPATH_INFO_METRIC) &&
4568              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
4569                          pinfo->metric)) ||
4570             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
4571              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
4572                          pinfo->exptime)) ||
4573             ((pinfo->filled & MPATH_INFO_FLAGS) &&
4574              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
4575                         pinfo->flags)) ||
4576             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
4577              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
4578                          pinfo->discovery_timeout)) ||
4579             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
4580              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
4581                         pinfo->discovery_retries)))
4582                 goto nla_put_failure;
4583
4584         nla_nest_end(msg, pinfoattr);
4585
4586         genlmsg_end(msg, hdr);
4587         return 0;
4588
4589  nla_put_failure:
4590         genlmsg_cancel(msg, hdr);
4591         return -EMSGSIZE;
4592 }
4593
4594 static int nl80211_dump_mpath(struct sk_buff *skb,
4595                               struct netlink_callback *cb)
4596 {
4597         struct mpath_info pinfo;
4598         struct cfg80211_registered_device *rdev;
4599         struct wireless_dev *wdev;
4600         u8 dst[ETH_ALEN];
4601         u8 next_hop[ETH_ALEN];
4602         int path_idx = cb->args[2];
4603         int err;
4604
4605         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4606         if (err)
4607                 return err;
4608
4609         if (!rdev->ops->dump_mpath) {
4610                 err = -EOPNOTSUPP;
4611                 goto out_err;
4612         }
4613
4614         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4615                 err = -EOPNOTSUPP;
4616                 goto out_err;
4617         }
4618
4619         while (1) {
4620                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
4621                                       next_hop, &pinfo);
4622                 if (err == -ENOENT)
4623                         break;
4624                 if (err)
4625                         goto out_err;
4626
4627                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4628                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4629                                        wdev->netdev, dst, next_hop,
4630                                        &pinfo) < 0)
4631                         goto out;
4632
4633                 path_idx++;
4634         }
4635
4636
4637  out:
4638         cb->args[2] = path_idx;
4639         err = skb->len;
4640  out_err:
4641         nl80211_finish_wdev_dump(rdev);
4642         return err;
4643 }
4644
4645 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
4646 {
4647         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4648         int err;
4649         struct net_device *dev = info->user_ptr[1];
4650         struct mpath_info pinfo;
4651         struct sk_buff *msg;
4652         u8 *dst = NULL;
4653         u8 next_hop[ETH_ALEN];
4654
4655         memset(&pinfo, 0, sizeof(pinfo));
4656
4657         if (!info->attrs[NL80211_ATTR_MAC])
4658                 return -EINVAL;
4659
4660         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4661
4662         if (!rdev->ops->get_mpath)
4663                 return -EOPNOTSUPP;
4664
4665         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4666                 return -EOPNOTSUPP;
4667
4668         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
4669         if (err)
4670                 return err;
4671
4672         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4673         if (!msg)
4674                 return -ENOMEM;
4675
4676         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4677                                  dev, dst, next_hop, &pinfo) < 0) {
4678                 nlmsg_free(msg);
4679                 return -ENOBUFS;
4680         }
4681
4682         return genlmsg_reply(msg, info);
4683 }
4684
4685 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
4686 {
4687         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4688         struct net_device *dev = info->user_ptr[1];
4689         u8 *dst = NULL;
4690         u8 *next_hop = NULL;
4691
4692         if (!info->attrs[NL80211_ATTR_MAC])
4693                 return -EINVAL;
4694
4695         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4696                 return -EINVAL;
4697
4698         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4699         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4700
4701         if (!rdev->ops->change_mpath)
4702                 return -EOPNOTSUPP;
4703
4704         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4705                 return -EOPNOTSUPP;
4706
4707         return rdev_change_mpath(rdev, dev, dst, next_hop);
4708 }
4709
4710 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
4711 {
4712         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4713         struct net_device *dev = info->user_ptr[1];
4714         u8 *dst = NULL;
4715         u8 *next_hop = NULL;
4716
4717         if (!info->attrs[NL80211_ATTR_MAC])
4718                 return -EINVAL;
4719
4720         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
4721                 return -EINVAL;
4722
4723         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4724         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
4725
4726         if (!rdev->ops->add_mpath)
4727                 return -EOPNOTSUPP;
4728
4729         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4730                 return -EOPNOTSUPP;
4731
4732         return rdev_add_mpath(rdev, dev, dst, next_hop);
4733 }
4734
4735 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
4736 {
4737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4738         struct net_device *dev = info->user_ptr[1];
4739         u8 *dst = NULL;
4740
4741         if (info->attrs[NL80211_ATTR_MAC])
4742                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4743
4744         if (!rdev->ops->del_mpath)
4745                 return -EOPNOTSUPP;
4746
4747         return rdev_del_mpath(rdev, dev, dst);
4748 }
4749
4750 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
4751 {
4752         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4753         int err;
4754         struct net_device *dev = info->user_ptr[1];
4755         struct mpath_info pinfo;
4756         struct sk_buff *msg;
4757         u8 *dst = NULL;
4758         u8 mpp[ETH_ALEN];
4759
4760         memset(&pinfo, 0, sizeof(pinfo));
4761
4762         if (!info->attrs[NL80211_ATTR_MAC])
4763                 return -EINVAL;
4764
4765         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
4766
4767         if (!rdev->ops->get_mpp)
4768                 return -EOPNOTSUPP;
4769
4770         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
4771                 return -EOPNOTSUPP;
4772
4773         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
4774         if (err)
4775                 return err;
4776
4777         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4778         if (!msg)
4779                 return -ENOMEM;
4780
4781         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
4782                                dev, dst, mpp, &pinfo) < 0) {
4783                 nlmsg_free(msg);
4784                 return -ENOBUFS;
4785         }
4786
4787         return genlmsg_reply(msg, info);
4788 }
4789
4790 static int nl80211_dump_mpp(struct sk_buff *skb,
4791                             struct netlink_callback *cb)
4792 {
4793         struct mpath_info pinfo;
4794         struct cfg80211_registered_device *rdev;
4795         struct wireless_dev *wdev;
4796         u8 dst[ETH_ALEN];
4797         u8 mpp[ETH_ALEN];
4798         int path_idx = cb->args[2];
4799         int err;
4800
4801         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
4802         if (err)
4803                 return err;
4804
4805         if (!rdev->ops->dump_mpp) {
4806                 err = -EOPNOTSUPP;
4807                 goto out_err;
4808         }
4809
4810         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
4811                 err = -EOPNOTSUPP;
4812                 goto out_err;
4813         }
4814
4815         while (1) {
4816                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
4817                                     mpp, &pinfo);
4818                 if (err == -ENOENT)
4819                         break;
4820                 if (err)
4821                         goto out_err;
4822
4823                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
4824                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
4825                                        wdev->netdev, dst, mpp,
4826                                        &pinfo) < 0)
4827                         goto out;
4828
4829                 path_idx++;
4830         }
4831
4832  out:
4833         cb->args[2] = path_idx;
4834         err = skb->len;
4835  out_err:
4836         nl80211_finish_wdev_dump(rdev);
4837         return err;
4838 }
4839
4840 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
4841 {
4842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4843         struct net_device *dev = info->user_ptr[1];
4844         struct wireless_dev *wdev = dev->ieee80211_ptr;
4845         struct bss_parameters params;
4846         int err;
4847
4848         memset(&params, 0, sizeof(params));
4849         /* default to not changing parameters */
4850         params.use_cts_prot = -1;
4851         params.use_short_preamble = -1;
4852         params.use_short_slot_time = -1;
4853         params.ap_isolate = -1;
4854         params.ht_opmode = -1;
4855         params.p2p_ctwindow = -1;
4856         params.p2p_opp_ps = -1;
4857
4858         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
4859                 params.use_cts_prot =
4860                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
4861         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
4862                 params.use_short_preamble =
4863                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
4864         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
4865                 params.use_short_slot_time =
4866                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
4867         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
4868                 params.basic_rates =
4869                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4870                 params.basic_rates_len =
4871                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
4872         }
4873         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
4874                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
4875         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
4876                 params.ht_opmode =
4877                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
4878
4879         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4880                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4881                         return -EINVAL;
4882                 params.p2p_ctwindow =
4883                         nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4884                 if (params.p2p_ctwindow < 0)
4885                         return -EINVAL;
4886                 if (params.p2p_ctwindow != 0 &&
4887                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4888                         return -EINVAL;
4889         }
4890
4891         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4892                 u8 tmp;
4893
4894                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4895                         return -EINVAL;
4896                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4897                 if (tmp > 1)
4898                         return -EINVAL;
4899                 params.p2p_opp_ps = tmp;
4900                 if (params.p2p_opp_ps &&
4901                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4902                         return -EINVAL;
4903         }
4904
4905         if (!rdev->ops->change_bss)
4906                 return -EOPNOTSUPP;
4907
4908         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4909             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4910                 return -EOPNOTSUPP;
4911
4912         wdev_lock(wdev);
4913         err = rdev_change_bss(rdev, dev, &params);
4914         wdev_unlock(wdev);
4915
4916         return err;
4917 }
4918
4919 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
4920         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
4921         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
4922         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
4923         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
4924         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
4925         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
4926         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
4927 };
4928
4929 static int parse_reg_rule(struct nlattr *tb[],
4930         struct ieee80211_reg_rule *reg_rule)
4931 {
4932         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
4933         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
4934
4935         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
4936                 return -EINVAL;
4937         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
4938                 return -EINVAL;
4939         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
4940                 return -EINVAL;
4941         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
4942                 return -EINVAL;
4943         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
4944                 return -EINVAL;
4945
4946         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
4947
4948         freq_range->start_freq_khz =
4949                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
4950         freq_range->end_freq_khz =
4951                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
4952         freq_range->max_bandwidth_khz =
4953                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
4954
4955         power_rule->max_eirp =
4956                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
4957
4958         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
4959                 power_rule->max_antenna_gain =
4960                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
4961
4962         if (tb[NL80211_ATTR_DFS_CAC_TIME])
4963                 reg_rule->dfs_cac_ms =
4964                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
4965
4966         return 0;
4967 }
4968
4969 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
4970 {
4971         char *data = NULL;
4972         bool is_indoor;
4973         enum nl80211_user_reg_hint_type user_reg_hint_type;
4974         u32 owner_nlportid;
4975
4976
4977         /*
4978          * You should only get this when cfg80211 hasn't yet initialized
4979          * completely when built-in to the kernel right between the time
4980          * window between nl80211_init() and regulatory_init(), if that is
4981          * even possible.
4982          */
4983         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
4984                 return -EINPROGRESS;
4985
4986         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
4987                 user_reg_hint_type =
4988                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
4989         else
4990                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
4991
4992         switch (user_reg_hint_type) {
4993         case NL80211_USER_REG_HINT_USER:
4994         case NL80211_USER_REG_HINT_CELL_BASE:
4995                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
4996                         return -EINVAL;
4997
4998                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
4999                 return regulatory_hint_user(data, user_reg_hint_type);
5000         case NL80211_USER_REG_HINT_INDOOR:
5001                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
5002                         owner_nlportid = info->snd_portid;
5003                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
5004                 } else {
5005                         owner_nlportid = 0;
5006                         is_indoor = true;
5007                 }
5008
5009                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
5010         default:
5011                 return -EINVAL;
5012         }
5013 }
5014
5015 static int nl80211_get_mesh_config(struct sk_buff *skb,
5016                                    struct genl_info *info)
5017 {
5018         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5019         struct net_device *dev = info->user_ptr[1];
5020         struct wireless_dev *wdev = dev->ieee80211_ptr;
5021         struct mesh_config cur_params;
5022         int err = 0;
5023         void *hdr;
5024         struct nlattr *pinfoattr;
5025         struct sk_buff *msg;
5026
5027         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5028                 return -EOPNOTSUPP;
5029
5030         if (!rdev->ops->get_mesh_config)
5031                 return -EOPNOTSUPP;
5032
5033         wdev_lock(wdev);
5034         /* If not connected, get default parameters */
5035         if (!wdev->mesh_id_len)
5036                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
5037         else
5038                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
5039         wdev_unlock(wdev);
5040
5041         if (err)
5042                 return err;
5043
5044         /* Draw up a netlink message to send back */
5045         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5046         if (!msg)
5047                 return -ENOMEM;
5048         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5049                              NL80211_CMD_GET_MESH_CONFIG);
5050         if (!hdr)
5051                 goto out;
5052         pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG);
5053         if (!pinfoattr)
5054                 goto nla_put_failure;
5055         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5056             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
5057                         cur_params.dot11MeshRetryTimeout) ||
5058             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5059                         cur_params.dot11MeshConfirmTimeout) ||
5060             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
5061                         cur_params.dot11MeshHoldingTimeout) ||
5062             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
5063                         cur_params.dot11MeshMaxPeerLinks) ||
5064             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
5065                        cur_params.dot11MeshMaxRetries) ||
5066             nla_put_u8(msg, NL80211_MESHCONF_TTL,
5067                        cur_params.dot11MeshTTL) ||
5068             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
5069                        cur_params.element_ttl) ||
5070             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5071                        cur_params.auto_open_plinks) ||
5072             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5073                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
5074             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5075                        cur_params.dot11MeshHWMPmaxPREQretries) ||
5076             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
5077                         cur_params.path_refresh_time) ||
5078             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5079                         cur_params.min_discovery_timeout) ||
5080             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5081                         cur_params.dot11MeshHWMPactivePathTimeout) ||
5082             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5083                         cur_params.dot11MeshHWMPpreqMinInterval) ||
5084             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5085                         cur_params.dot11MeshHWMPperrMinInterval) ||
5086             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5087                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
5088             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
5089                        cur_params.dot11MeshHWMPRootMode) ||
5090             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5091                         cur_params.dot11MeshHWMPRannInterval) ||
5092             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5093                        cur_params.dot11MeshGateAnnouncementProtocol) ||
5094             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
5095                        cur_params.dot11MeshForwarding) ||
5096             nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
5097                         cur_params.rssi_threshold) ||
5098             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
5099                         cur_params.ht_opmode) ||
5100             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5101                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
5102             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5103                         cur_params.dot11MeshHWMProotInterval) ||
5104             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5105                         cur_params.dot11MeshHWMPconfirmationInterval) ||
5106             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
5107                         cur_params.power_mode) ||
5108             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
5109                         cur_params.dot11MeshAwakeWindowDuration) ||
5110             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
5111                         cur_params.plink_timeout))
5112                 goto nla_put_failure;
5113         nla_nest_end(msg, pinfoattr);
5114         genlmsg_end(msg, hdr);
5115         return genlmsg_reply(msg, info);
5116
5117  nla_put_failure:
5118         genlmsg_cancel(msg, hdr);
5119  out:
5120         nlmsg_free(msg);
5121         return -ENOBUFS;
5122 }
5123
5124 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
5125         [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 },
5126         [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 },
5127         [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 },
5128         [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 },
5129         [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 },
5130         [NL80211_MESHCONF_TTL] = { .type = NLA_U8 },
5131         [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 },
5132         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 },
5133         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 },
5134         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
5135         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
5136         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 },
5137         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
5138         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 },
5139         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 },
5140         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 },
5141         [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 },
5142         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 },
5143         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 },
5144         [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 },
5145         [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 },
5146         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
5147         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
5148         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 },
5149         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 },
5150         [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 },
5151         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
5152         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
5153 };
5154
5155 static const struct nla_policy
5156         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
5157         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
5158         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
5159         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
5160         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
5161         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
5162         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
5163         [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY,
5164                                     .len = IEEE80211_MAX_DATA_LEN },
5165         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
5166 };
5167
5168 static int nl80211_parse_mesh_config(struct genl_info *info,
5169                                      struct mesh_config *cfg,
5170                                      u32 *mask_out)
5171 {
5172         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
5173         u32 mask = 0;
5174
5175 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \
5176 do {                                                                        \
5177         if (tb[attr]) {                                                     \
5178                 if (fn(tb[attr]) < min || fn(tb[attr]) > max)               \
5179                         return -EINVAL;                                     \
5180                 cfg->param = fn(tb[attr]);                                  \
5181                 mask |= (1 << (attr - 1));                                  \
5182         }                                                                   \
5183 } while (0)
5184
5185
5186         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
5187                 return -EINVAL;
5188         if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX,
5189                              info->attrs[NL80211_ATTR_MESH_CONFIG],
5190                              nl80211_meshconf_params_policy))
5191                 return -EINVAL;
5192
5193         /* This makes sure that there aren't more than 32 mesh config
5194          * parameters (otherwise our bitfield scheme would not work.) */
5195         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
5196
5197         /* Fill in the params struct */
5198         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255,
5199                                   mask, NL80211_MESHCONF_RETRY_TIMEOUT,
5200                                   nla_get_u16);
5201         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255,
5202                                   mask, NL80211_MESHCONF_CONFIRM_TIMEOUT,
5203                                   nla_get_u16);
5204         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255,
5205                                   mask, NL80211_MESHCONF_HOLDING_TIMEOUT,
5206                                   nla_get_u16);
5207         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255,
5208                                   mask, NL80211_MESHCONF_MAX_PEER_LINKS,
5209                                   nla_get_u16);
5210         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16,
5211                                   mask, NL80211_MESHCONF_MAX_RETRIES,
5212                                   nla_get_u8);
5213         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255,
5214                                   mask, NL80211_MESHCONF_TTL, nla_get_u8);
5215         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255,
5216                                   mask, NL80211_MESHCONF_ELEMENT_TTL,
5217                                   nla_get_u8);
5218         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1,
5219                                   mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
5220                                   nla_get_u8);
5221         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
5222                                   1, 255, mask,
5223                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
5224                                   nla_get_u32);
5225         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255,
5226                                   mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
5227                                   nla_get_u8);
5228         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535,
5229                                   mask, NL80211_MESHCONF_PATH_REFRESH_TIME,
5230                                   nla_get_u32);
5231         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535,
5232                                   mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
5233                                   nla_get_u16);
5234         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
5235                                   1, 65535, mask,
5236                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
5237                                   nla_get_u32);
5238         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval,
5239                                   1, 65535, mask,
5240                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
5241                                   nla_get_u16);
5242         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval,
5243                                   1, 65535, mask,
5244                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
5245                                   nla_get_u16);
5246         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5247                                   dot11MeshHWMPnetDiameterTraversalTime,
5248                                   1, 65535, mask,
5249                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
5250                                   nla_get_u16);
5251         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4,
5252                                   mask, NL80211_MESHCONF_HWMP_ROOTMODE,
5253                                   nla_get_u8);
5254         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535,
5255                                   mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
5256                                   nla_get_u16);
5257         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5258                                   dot11MeshGateAnnouncementProtocol, 0, 1,
5259                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
5260                                   nla_get_u8);
5261         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1,
5262                                   mask, NL80211_MESHCONF_FORWARDING,
5263                                   nla_get_u8);
5264         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0,
5265                                   mask, NL80211_MESHCONF_RSSI_THRESHOLD,
5266                                   nla_get_s32);
5267         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16,
5268                                   mask, NL80211_MESHCONF_HT_OPMODE,
5269                                   nla_get_u16);
5270         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout,
5271                                   1, 65535, mask,
5272                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
5273                                   nla_get_u32);
5274         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535,
5275                                   mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
5276                                   nla_get_u16);
5277         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
5278                                   dot11MeshHWMPconfirmationInterval,
5279                                   1, 65535, mask,
5280                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
5281                                   nla_get_u16);
5282         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode,
5283                                   NL80211_MESH_POWER_ACTIVE,
5284                                   NL80211_MESH_POWER_MAX,
5285                                   mask, NL80211_MESHCONF_POWER_MODE,
5286                                   nla_get_u32);
5287         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration,
5288                                   0, 65535, mask,
5289                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
5290         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff,
5291                                   mask, NL80211_MESHCONF_PLINK_TIMEOUT,
5292                                   nla_get_u32);
5293         if (mask_out)
5294                 *mask_out = mask;
5295
5296         return 0;
5297
5298 #undef FILL_IN_MESH_PARAM_IF_SET
5299 }
5300
5301 static int nl80211_parse_mesh_setup(struct genl_info *info,
5302                                      struct mesh_setup *setup)
5303 {
5304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5305         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
5306
5307         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
5308                 return -EINVAL;
5309         if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX,
5310                              info->attrs[NL80211_ATTR_MESH_SETUP],
5311                              nl80211_mesh_setup_params_policy))
5312                 return -EINVAL;
5313
5314         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
5315                 setup->sync_method =
5316                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
5317                  IEEE80211_SYNC_METHOD_VENDOR :
5318                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
5319
5320         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
5321                 setup->path_sel_proto =
5322                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
5323                  IEEE80211_PATH_PROTOCOL_VENDOR :
5324                  IEEE80211_PATH_PROTOCOL_HWMP;
5325
5326         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
5327                 setup->path_metric =
5328                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
5329                  IEEE80211_PATH_METRIC_VENDOR :
5330                  IEEE80211_PATH_METRIC_AIRTIME;
5331
5332
5333         if (tb[NL80211_MESH_SETUP_IE]) {
5334                 struct nlattr *ieattr =
5335                         tb[NL80211_MESH_SETUP_IE];
5336                 if (!is_valid_ie_attr(ieattr))
5337                         return -EINVAL;
5338                 setup->ie = nla_data(ieattr);
5339                 setup->ie_len = nla_len(ieattr);
5340         }
5341         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
5342             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
5343                 return -EINVAL;
5344         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
5345         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
5346         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
5347         if (setup->is_secure)
5348                 setup->user_mpm = true;
5349
5350         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
5351                 if (!setup->user_mpm)
5352                         return -EINVAL;
5353                 setup->auth_id =
5354                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
5355         }
5356
5357         return 0;
5358 }
5359
5360 static int nl80211_update_mesh_config(struct sk_buff *skb,
5361                                       struct genl_info *info)
5362 {
5363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5364         struct net_device *dev = info->user_ptr[1];
5365         struct wireless_dev *wdev = dev->ieee80211_ptr;
5366         struct mesh_config cfg;
5367         u32 mask;
5368         int err;
5369
5370         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
5371                 return -EOPNOTSUPP;
5372
5373         if (!rdev->ops->update_mesh_config)
5374                 return -EOPNOTSUPP;
5375
5376         err = nl80211_parse_mesh_config(info, &cfg, &mask);
5377         if (err)
5378                 return err;
5379
5380         wdev_lock(wdev);
5381         if (!wdev->mesh_id_len)
5382                 err = -ENOLINK;
5383
5384         if (!err)
5385                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
5386
5387         wdev_unlock(wdev);
5388
5389         return err;
5390 }
5391
5392 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
5393                               struct sk_buff *msg)
5394 {
5395         struct nlattr *nl_reg_rules;
5396         unsigned int i;
5397
5398         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
5399             (regdom->dfs_region &&
5400              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
5401                 goto nla_put_failure;
5402
5403         nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
5404         if (!nl_reg_rules)
5405                 goto nla_put_failure;
5406
5407         for (i = 0; i < regdom->n_reg_rules; i++) {
5408                 struct nlattr *nl_reg_rule;
5409                 const struct ieee80211_reg_rule *reg_rule;
5410                 const struct ieee80211_freq_range *freq_range;
5411                 const struct ieee80211_power_rule *power_rule;
5412                 unsigned int max_bandwidth_khz;
5413
5414                 reg_rule = &regdom->reg_rules[i];
5415                 freq_range = &reg_rule->freq_range;
5416                 power_rule = &reg_rule->power_rule;
5417
5418                 nl_reg_rule = nla_nest_start(msg, i);
5419                 if (!nl_reg_rule)
5420                         goto nla_put_failure;
5421
5422                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
5423                 if (!max_bandwidth_khz)
5424                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
5425                                                                   reg_rule);
5426
5427                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
5428                                 reg_rule->flags) ||
5429                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
5430                                 freq_range->start_freq_khz) ||
5431                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
5432                                 freq_range->end_freq_khz) ||
5433                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
5434                                 max_bandwidth_khz) ||
5435                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
5436                                 power_rule->max_antenna_gain) ||
5437                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
5438                                 power_rule->max_eirp) ||
5439                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
5440                                 reg_rule->dfs_cac_ms))
5441                         goto nla_put_failure;
5442
5443                 nla_nest_end(msg, nl_reg_rule);
5444         }
5445
5446         nla_nest_end(msg, nl_reg_rules);
5447         return 0;
5448
5449 nla_put_failure:
5450         return -EMSGSIZE;
5451 }
5452
5453 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
5454 {
5455         const struct ieee80211_regdomain *regdom = NULL;
5456         struct cfg80211_registered_device *rdev;
5457         struct wiphy *wiphy = NULL;
5458         struct sk_buff *msg;
5459         void *hdr;
5460
5461         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5462         if (!msg)
5463                 return -ENOBUFS;
5464
5465         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
5466                              NL80211_CMD_GET_REG);
5467         if (!hdr)
5468                 goto put_failure;
5469
5470         if (info->attrs[NL80211_ATTR_WIPHY]) {
5471                 bool self_managed;
5472
5473                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
5474                 if (IS_ERR(rdev)) {
5475                         nlmsg_free(msg);
5476                         return PTR_ERR(rdev);
5477                 }
5478
5479                 wiphy = &rdev->wiphy;
5480                 self_managed = wiphy->regulatory_flags &
5481                                REGULATORY_WIPHY_SELF_MANAGED;
5482                 regdom = get_wiphy_regdom(wiphy);
5483
5484                 /* a self-managed-reg device must have a private regdom */
5485                 if (WARN_ON(!regdom && self_managed)) {
5486                         nlmsg_free(msg);
5487                         return -EINVAL;
5488                 }
5489
5490                 if (regdom &&
5491                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5492                         goto nla_put_failure;
5493         }
5494
5495         if (!wiphy && reg_last_request_cell_base() &&
5496             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5497                         NL80211_USER_REG_HINT_CELL_BASE))
5498                 goto nla_put_failure;
5499
5500         rcu_read_lock();
5501
5502         if (!regdom)
5503                 regdom = rcu_dereference(cfg80211_regdomain);
5504
5505         if (nl80211_put_regdom(regdom, msg))
5506                 goto nla_put_failure_rcu;
5507
5508         rcu_read_unlock();
5509
5510         genlmsg_end(msg, hdr);
5511         return genlmsg_reply(msg, info);
5512
5513 nla_put_failure_rcu:
5514         rcu_read_unlock();
5515 nla_put_failure:
5516         genlmsg_cancel(msg, hdr);
5517 put_failure:
5518         nlmsg_free(msg);
5519         return -EMSGSIZE;
5520 }
5521
5522 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
5523                                u32 seq, int flags, struct wiphy *wiphy,
5524                                const struct ieee80211_regdomain *regdom)
5525 {
5526         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
5527                                    NL80211_CMD_GET_REG);
5528
5529         if (!hdr)
5530                 return -1;
5531
5532         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
5533
5534         if (nl80211_put_regdom(regdom, msg))
5535                 goto nla_put_failure;
5536
5537         if (!wiphy && reg_last_request_cell_base() &&
5538             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
5539                         NL80211_USER_REG_HINT_CELL_BASE))
5540                 goto nla_put_failure;
5541
5542         if (wiphy &&
5543             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
5544                 goto nla_put_failure;
5545
5546         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
5547             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
5548                 goto nla_put_failure;
5549
5550         genlmsg_end(msg, hdr);
5551         return 0;
5552
5553 nla_put_failure:
5554         genlmsg_cancel(msg, hdr);
5555         return -EMSGSIZE;
5556 }
5557
5558 static int nl80211_get_reg_dump(struct sk_buff *skb,
5559                                 struct netlink_callback *cb)
5560 {
5561         const struct ieee80211_regdomain *regdom = NULL;
5562         struct cfg80211_registered_device *rdev;
5563         int err, reg_idx, start = cb->args[2];
5564
5565         rtnl_lock();
5566
5567         if (cfg80211_regdomain && start == 0) {
5568                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5569                                           NLM_F_MULTI, NULL,
5570                                           rtnl_dereference(cfg80211_regdomain));
5571                 if (err < 0)
5572                         goto out_err;
5573         }
5574
5575         /* the global regdom is idx 0 */
5576         reg_idx = 1;
5577         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
5578                 regdom = get_wiphy_regdom(&rdev->wiphy);
5579                 if (!regdom)
5580                         continue;
5581
5582                 if (++reg_idx <= start)
5583                         continue;
5584
5585                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
5586                                           NLM_F_MULTI, &rdev->wiphy, regdom);
5587                 if (err < 0) {
5588                         reg_idx--;
5589                         break;
5590                 }
5591         }
5592
5593         cb->args[2] = reg_idx;
5594         err = skb->len;
5595 out_err:
5596         rtnl_unlock();
5597         return err;
5598 }
5599
5600 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
5601 {
5602         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
5603         struct nlattr *nl_reg_rule;
5604         char *alpha2;
5605         int rem_reg_rules, r;
5606         u32 num_rules = 0, rule_idx = 0, size_of_regd;
5607         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
5608         struct ieee80211_regdomain *rd;
5609
5610         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
5611                 return -EINVAL;
5612
5613         if (!info->attrs[NL80211_ATTR_REG_RULES])
5614                 return -EINVAL;
5615
5616         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
5617
5618         if (info->attrs[NL80211_ATTR_DFS_REGION])
5619                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
5620
5621         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5622                             rem_reg_rules) {
5623                 num_rules++;
5624                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
5625                         return -EINVAL;
5626         }
5627
5628         if (!reg_is_valid_request(alpha2))
5629                 return -EINVAL;
5630
5631         size_of_regd = sizeof(struct ieee80211_regdomain) +
5632                        num_rules * sizeof(struct ieee80211_reg_rule);
5633
5634         rd = kzalloc(size_of_regd, GFP_KERNEL);
5635         if (!rd)
5636                 return -ENOMEM;
5637
5638         rd->n_reg_rules = num_rules;
5639         rd->alpha2[0] = alpha2[0];
5640         rd->alpha2[1] = alpha2[1];
5641
5642         /*
5643          * Disable DFS master mode if the DFS region was
5644          * not supported or known on this kernel.
5645          */
5646         if (reg_supported_dfs_region(dfs_region))
5647                 rd->dfs_region = dfs_region;
5648
5649         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
5650                             rem_reg_rules) {
5651                 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX,
5652                               nla_data(nl_reg_rule), nla_len(nl_reg_rule),
5653                               reg_rule_policy);
5654                 if (r)
5655                         goto bad_reg;
5656                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
5657                 if (r)
5658                         goto bad_reg;
5659
5660                 rule_idx++;
5661
5662                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
5663                         r = -EINVAL;
5664                         goto bad_reg;
5665                 }
5666         }
5667
5668         r = set_regdom(rd, REGD_SOURCE_CRDA);
5669         /* set_regdom took ownership */
5670         rd = NULL;
5671
5672  bad_reg:
5673         kfree(rd);
5674         return r;
5675 }
5676
5677 static int validate_scan_freqs(struct nlattr *freqs)
5678 {
5679         struct nlattr *attr1, *attr2;
5680         int n_channels = 0, tmp1, tmp2;
5681
5682         nla_for_each_nested(attr1, freqs, tmp1) {
5683                 n_channels++;
5684                 /*
5685                  * Some hardware has a limited channel list for
5686                  * scanning, and it is pretty much nonsensical
5687                  * to scan for a channel twice, so disallow that
5688                  * and don't require drivers to check that the
5689                  * channel list they get isn't longer than what
5690                  * they can scan, as long as they can scan all
5691                  * the channels they registered at once.
5692                  */
5693                 nla_for_each_nested(attr2, freqs, tmp2)
5694                         if (attr1 != attr2 &&
5695                             nla_get_u32(attr1) == nla_get_u32(attr2))
5696                                 return 0;
5697         }
5698
5699         return n_channels;
5700 }
5701
5702 static int nl80211_parse_random_mac(struct nlattr **attrs,
5703                                     u8 *mac_addr, u8 *mac_addr_mask)
5704 {
5705         int i;
5706
5707         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
5708                 eth_zero_addr(mac_addr);
5709                 eth_zero_addr(mac_addr_mask);
5710                 mac_addr[0] = 0x2;
5711                 mac_addr_mask[0] = 0x3;
5712
5713                 return 0;
5714         }
5715
5716         /* need both or none */
5717         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
5718                 return -EINVAL;
5719
5720         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
5721         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
5722
5723         /* don't allow or configure an mcast address */
5724         if (!is_multicast_ether_addr(mac_addr_mask) ||
5725             is_multicast_ether_addr(mac_addr))
5726                 return -EINVAL;
5727
5728         /*
5729          * allow users to pass a MAC address that has bits set outside
5730          * of the mask, but don't bother drivers with having to deal
5731          * with such bits
5732          */
5733         for (i = 0; i < ETH_ALEN; i++)
5734                 mac_addr[i] &= mac_addr_mask[i];
5735
5736         return 0;
5737 }
5738
5739 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
5740 {
5741         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5742         struct wireless_dev *wdev = info->user_ptr[1];
5743         struct cfg80211_scan_request *request;
5744         struct nlattr *attr;
5745         struct wiphy *wiphy;
5746         int err, tmp, n_ssids = 0, n_channels, i;
5747         size_t ie_len;
5748
5749         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
5750                 return -EINVAL;
5751
5752         wiphy = &rdev->wiphy;
5753
5754         if (!rdev->ops->scan)
5755                 return -EOPNOTSUPP;
5756
5757         if (rdev->scan_req || rdev->scan_msg) {
5758                 err = -EBUSY;
5759                 goto unlock;
5760         }
5761
5762         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5763                 n_channels = validate_scan_freqs(
5764                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5765                 if (!n_channels) {
5766                         err = -EINVAL;
5767                         goto unlock;
5768                 }
5769         } else {
5770                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5771         }
5772
5773         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
5774                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
5775                         n_ssids++;
5776
5777         if (n_ssids > wiphy->max_scan_ssids) {
5778                 err = -EINVAL;
5779                 goto unlock;
5780         }
5781
5782         if (info->attrs[NL80211_ATTR_IE])
5783                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5784         else
5785                 ie_len = 0;
5786
5787         if (ie_len > wiphy->max_scan_ie_len) {
5788                 err = -EINVAL;
5789                 goto unlock;
5790         }
5791
5792         request = kzalloc(sizeof(*request)
5793                         + sizeof(*request->ssids) * n_ssids
5794                         + sizeof(*request->channels) * n_channels
5795                         + ie_len, GFP_KERNEL);
5796         if (!request) {
5797                 err = -ENOMEM;
5798                 goto unlock;
5799         }
5800
5801         if (n_ssids)
5802                 request->ssids = (void *)&request->channels[n_channels];
5803         request->n_ssids = n_ssids;
5804         if (ie_len) {
5805                 if (n_ssids)
5806                         request->ie = (void *)(request->ssids + n_ssids);
5807                 else
5808                         request->ie = (void *)(request->channels + n_channels);
5809         }
5810
5811         i = 0;
5812         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5813                 /* user specified, bail out if channel not found */
5814                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
5815                         struct ieee80211_channel *chan;
5816
5817                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
5818
5819                         if (!chan) {
5820                                 err = -EINVAL;
5821                                 goto out_free;
5822                         }
5823
5824                         /* ignore disabled channels */
5825                         if (chan->flags & IEEE80211_CHAN_DISABLED)
5826                                 continue;
5827
5828                         request->channels[i] = chan;
5829                         i++;
5830                 }
5831         } else {
5832                 enum ieee80211_band band;
5833
5834                 /* all channels */
5835                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
5836                         int j;
5837                         if (!wiphy->bands[band])
5838                                 continue;
5839                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
5840                                 struct ieee80211_channel *chan;
5841
5842                                 chan = &wiphy->bands[band]->channels[j];
5843
5844                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
5845                                         continue;
5846
5847                                 request->channels[i] = chan;
5848                                 i++;
5849                         }
5850                 }
5851         }
5852
5853         if (!i) {
5854                 err = -EINVAL;
5855                 goto out_free;
5856         }
5857
5858         request->n_channels = i;
5859
5860         i = 0;
5861         if (n_ssids) {
5862                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
5863                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
5864                                 err = -EINVAL;
5865                                 goto out_free;
5866                         }
5867                         request->ssids[i].ssid_len = nla_len(attr);
5868                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
5869                         i++;
5870                 }
5871         }
5872
5873         if (info->attrs[NL80211_ATTR_IE]) {
5874                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
5875                 memcpy((void *)request->ie,
5876                        nla_data(info->attrs[NL80211_ATTR_IE]),
5877                        request->ie_len);
5878         }
5879
5880         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
5881                 if (wiphy->bands[i])
5882                         request->rates[i] =
5883                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
5884
5885         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
5886                 nla_for_each_nested(attr,
5887                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
5888                                     tmp) {
5889                         enum ieee80211_band band = nla_type(attr);
5890
5891                         if (band < 0 || band >= IEEE80211_NUM_BANDS) {
5892                                 err = -EINVAL;
5893                                 goto out_free;
5894                         }
5895
5896                         if (!wiphy->bands[band])
5897                                 continue;
5898
5899                         err = ieee80211_get_ratemask(wiphy->bands[band],
5900                                                      nla_data(attr),
5901                                                      nla_len(attr),
5902                                                      &request->rates[band]);
5903                         if (err)
5904                                 goto out_free;
5905                 }
5906         }
5907
5908         if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) {
5909                 request->flags = nla_get_u32(
5910                         info->attrs[NL80211_ATTR_SCAN_FLAGS]);
5911                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
5912                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
5913                         err = -EOPNOTSUPP;
5914                         goto out_free;
5915                 }
5916
5917                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
5918                         if (!(wiphy->features &
5919                                         NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) {
5920                                 err = -EOPNOTSUPP;
5921                                 goto out_free;
5922                         }
5923
5924                         if (wdev->current_bss) {
5925                                 err = -EOPNOTSUPP;
5926                                 goto out_free;
5927                         }
5928
5929                         err = nl80211_parse_random_mac(info->attrs,
5930                                                        request->mac_addr,
5931                                                        request->mac_addr_mask);
5932                         if (err)
5933                                 goto out_free;
5934                 }
5935         }
5936
5937         request->no_cck =
5938                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
5939
5940         request->wdev = wdev;
5941         request->wiphy = &rdev->wiphy;
5942         request->scan_start = jiffies;
5943
5944         rdev->scan_req = request;
5945         err = rdev_scan(rdev, request);
5946
5947         if (!err) {
5948                 nl80211_send_scan_start(rdev, wdev);
5949                 if (wdev->netdev)
5950                         dev_hold(wdev->netdev);
5951         } else {
5952  out_free:
5953                 rdev->scan_req = NULL;
5954                 kfree(request);
5955         }
5956
5957  unlock:
5958         return err;
5959 }
5960
5961 static struct cfg80211_sched_scan_request *
5962 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
5963                          struct nlattr **attrs)
5964 {
5965         struct cfg80211_sched_scan_request *request;
5966         struct nlattr *attr;
5967         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i;
5968         u32 interval;
5969         enum ieee80211_band band;
5970         size_t ie_len;
5971         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
5972         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
5973
5974         if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE]))
5975                 return ERR_PTR(-EINVAL);
5976
5977         if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
5978                 return ERR_PTR(-EINVAL);
5979
5980         interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
5981         if (interval == 0)
5982                 return ERR_PTR(-EINVAL);
5983
5984         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
5985                 n_channels = validate_scan_freqs(
5986                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
5987                 if (!n_channels)
5988                         return ERR_PTR(-EINVAL);
5989         } else {
5990                 n_channels = ieee80211_get_num_supported_channels(wiphy);
5991         }
5992
5993         if (attrs[NL80211_ATTR_SCAN_SSIDS])
5994                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
5995                                     tmp)
5996                         n_ssids++;
5997
5998         if (n_ssids > wiphy->max_sched_scan_ssids)
5999                 return ERR_PTR(-EINVAL);
6000
6001         /*
6002          * First, count the number of 'real' matchsets. Due to an issue with
6003          * the old implementation, matchsets containing only the RSSI attribute
6004          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
6005          * RSSI for all matchsets, rather than their own matchset for reporting
6006          * all APs with a strong RSSI. This is needed to be compatible with
6007          * older userspace that treated a matchset with only the RSSI as the
6008          * global RSSI for all other matchsets - if there are other matchsets.
6009          */
6010         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6011                 nla_for_each_nested(attr,
6012                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6013                                     tmp) {
6014                         struct nlattr *rssi;
6015
6016                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6017                                         nla_data(attr), nla_len(attr),
6018                                         nl80211_match_policy);
6019                         if (err)
6020                                 return ERR_PTR(err);
6021                         /* add other standalone attributes here */
6022                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) {
6023                                 n_match_sets++;
6024                                 continue;
6025                         }
6026                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6027                         if (rssi)
6028                                 default_match_rssi = nla_get_s32(rssi);
6029                 }
6030         }
6031
6032         /* However, if there's no other matchset, add the RSSI one */
6033         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
6034                 n_match_sets = 1;
6035
6036         if (n_match_sets > wiphy->max_match_sets)
6037                 return ERR_PTR(-EINVAL);
6038
6039         if (attrs[NL80211_ATTR_IE])
6040                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
6041         else
6042                 ie_len = 0;
6043
6044         if (ie_len > wiphy->max_sched_scan_ie_len)
6045                 return ERR_PTR(-EINVAL);
6046
6047         request = kzalloc(sizeof(*request)
6048                         + sizeof(*request->ssids) * n_ssids
6049                         + sizeof(*request->match_sets) * n_match_sets
6050                         + sizeof(*request->channels) * n_channels
6051                         + ie_len, GFP_KERNEL);
6052         if (!request)
6053                 return ERR_PTR(-ENOMEM);
6054
6055         if (n_ssids)
6056                 request->ssids = (void *)&request->channels[n_channels];
6057         request->n_ssids = n_ssids;
6058         if (ie_len) {
6059                 if (n_ssids)
6060                         request->ie = (void *)(request->ssids + n_ssids);
6061                 else
6062                         request->ie = (void *)(request->channels + n_channels);
6063         }
6064
6065         if (n_match_sets) {
6066                 if (request->ie)
6067                         request->match_sets = (void *)(request->ie + ie_len);
6068                 else if (n_ssids)
6069                         request->match_sets =
6070                                 (void *)(request->ssids + n_ssids);
6071                 else
6072                         request->match_sets =
6073                                 (void *)(request->channels + n_channels);
6074         }
6075         request->n_match_sets = n_match_sets;
6076
6077         i = 0;
6078         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
6079                 /* user specified, bail out if channel not found */
6080                 nla_for_each_nested(attr,
6081                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
6082                                     tmp) {
6083                         struct ieee80211_channel *chan;
6084
6085                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
6086
6087                         if (!chan) {
6088                                 err = -EINVAL;
6089                                 goto out_free;
6090                         }
6091
6092                         /* ignore disabled channels */
6093                         if (chan->flags & IEEE80211_CHAN_DISABLED)
6094                                 continue;
6095
6096                         request->channels[i] = chan;
6097                         i++;
6098                 }
6099         } else {
6100                 /* all channels */
6101                 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
6102                         int j;
6103                         if (!wiphy->bands[band])
6104                                 continue;
6105                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
6106                                 struct ieee80211_channel *chan;
6107
6108                                 chan = &wiphy->bands[band]->channels[j];
6109
6110                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
6111                                         continue;
6112
6113                                 request->channels[i] = chan;
6114                                 i++;
6115                         }
6116                 }
6117         }
6118
6119         if (!i) {
6120                 err = -EINVAL;
6121                 goto out_free;
6122         }
6123
6124         request->n_channels = i;
6125
6126         i = 0;
6127         if (n_ssids) {
6128                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
6129                                     tmp) {
6130                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
6131                                 err = -EINVAL;
6132                                 goto out_free;
6133                         }
6134                         request->ssids[i].ssid_len = nla_len(attr);
6135                         memcpy(request->ssids[i].ssid, nla_data(attr),
6136                                nla_len(attr));
6137                         i++;
6138                 }
6139         }
6140
6141         i = 0;
6142         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
6143                 nla_for_each_nested(attr,
6144                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
6145                                     tmp) {
6146                         struct nlattr *ssid, *rssi;
6147
6148                         err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
6149                                         nla_data(attr), nla_len(attr),
6150                                         nl80211_match_policy);
6151                         if (err)
6152                                 goto out_free;
6153                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
6154                         if (ssid) {
6155                                 if (WARN_ON(i >= n_match_sets)) {
6156                                         /* this indicates a programming error,
6157                                          * the loop above should have verified
6158                                          * things properly
6159                                          */
6160                                         err = -EINVAL;
6161                                         goto out_free;
6162                                 }
6163
6164                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
6165                                         err = -EINVAL;
6166                                         goto out_free;
6167                                 }
6168                                 memcpy(request->match_sets[i].ssid.ssid,
6169                                        nla_data(ssid), nla_len(ssid));
6170                                 request->match_sets[i].ssid.ssid_len =
6171                                         nla_len(ssid);
6172                                 /* special attribute - old implemenation w/a */
6173                                 request->match_sets[i].rssi_thold =
6174                                         default_match_rssi;
6175                                 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
6176                                 if (rssi)
6177                                         request->match_sets[i].rssi_thold =
6178                                                 nla_get_s32(rssi);
6179                         }
6180                         i++;
6181                 }
6182
6183                 /* there was no other matchset, so the RSSI one is alone */
6184                 if (i == 0 && n_match_sets)
6185                         request->match_sets[0].rssi_thold = default_match_rssi;
6186
6187                 request->min_rssi_thold = INT_MAX;
6188                 for (i = 0; i < n_match_sets; i++)
6189                         request->min_rssi_thold =
6190                                 min(request->match_sets[i].rssi_thold,
6191                                     request->min_rssi_thold);
6192         } else {
6193                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
6194         }
6195
6196         if (ie_len) {
6197                 request->ie_len = ie_len;
6198                 memcpy((void *)request->ie,
6199                        nla_data(attrs[NL80211_ATTR_IE]),
6200                        request->ie_len);
6201         }
6202
6203         if (attrs[NL80211_ATTR_SCAN_FLAGS]) {
6204                 request->flags = nla_get_u32(
6205                         attrs[NL80211_ATTR_SCAN_FLAGS]);
6206                 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
6207                     !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) {
6208                         err = -EOPNOTSUPP;
6209                         goto out_free;
6210                 }
6211
6212                 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
6213                         u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR;
6214
6215                         if (!wdev) /* must be net-detect */
6216                                 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
6217
6218                         if (!(wiphy->features & flg)) {
6219                                 err = -EOPNOTSUPP;
6220                                 goto out_free;
6221                         }
6222
6223                         if (wdev && wdev->current_bss) {
6224                                 err = -EOPNOTSUPP;
6225                                 goto out_free;
6226                         }
6227
6228                         err = nl80211_parse_random_mac(attrs, request->mac_addr,
6229                                                        request->mac_addr_mask);
6230                         if (err)
6231                                 goto out_free;
6232                 }
6233         }
6234
6235         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
6236                 request->delay =
6237                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
6238
6239         request->interval = interval;
6240         request->scan_start = jiffies;
6241
6242         return request;
6243
6244 out_free:
6245         kfree(request);
6246         return ERR_PTR(err);
6247 }
6248
6249 static int nl80211_start_sched_scan(struct sk_buff *skb,
6250                                     struct genl_info *info)
6251 {
6252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6253         struct net_device *dev = info->user_ptr[1];
6254         struct wireless_dev *wdev = dev->ieee80211_ptr;
6255         struct cfg80211_sched_scan_request *sched_scan_req;
6256         int err;
6257
6258         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6259             !rdev->ops->sched_scan_start)
6260                 return -EOPNOTSUPP;
6261
6262         if (rdev->sched_scan_req)
6263                 return -EINPROGRESS;
6264
6265         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
6266                                                   info->attrs);
6267
6268         err = PTR_ERR_OR_ZERO(sched_scan_req);
6269         if (err)
6270                 goto out_err;
6271
6272         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
6273         if (err)
6274                 goto out_free;
6275
6276         sched_scan_req->dev = dev;
6277         sched_scan_req->wiphy = &rdev->wiphy;
6278
6279         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
6280                 sched_scan_req->owner_nlportid = info->snd_portid;
6281
6282         rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req);
6283
6284         nl80211_send_sched_scan(rdev, dev,
6285                                 NL80211_CMD_START_SCHED_SCAN);
6286         return 0;
6287
6288 out_free:
6289         kfree(sched_scan_req);
6290 out_err:
6291         return err;
6292 }
6293
6294 static int nl80211_stop_sched_scan(struct sk_buff *skb,
6295                                    struct genl_info *info)
6296 {
6297         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6298
6299         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
6300             !rdev->ops->sched_scan_stop)
6301                 return -EOPNOTSUPP;
6302
6303         return __cfg80211_stop_sched_scan(rdev, false);
6304 }
6305
6306 static int nl80211_start_radar_detection(struct sk_buff *skb,
6307                                          struct genl_info *info)
6308 {
6309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6310         struct net_device *dev = info->user_ptr[1];
6311         struct wireless_dev *wdev = dev->ieee80211_ptr;
6312         struct cfg80211_chan_def chandef;
6313         enum nl80211_dfs_regions dfs_region;
6314         unsigned int cac_time_ms;
6315         int err;
6316
6317         dfs_region = reg_get_dfs_region(wdev->wiphy);
6318         if (dfs_region == NL80211_DFS_UNSET)
6319                 return -EINVAL;
6320
6321         err = nl80211_parse_chandef(rdev, info, &chandef);
6322         if (err)
6323                 return err;
6324
6325         if (netif_carrier_ok(dev))
6326                 return -EBUSY;
6327
6328         if (wdev->cac_started)
6329                 return -EBUSY;
6330
6331         err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef,
6332                                             wdev->iftype);
6333         if (err < 0)
6334                 return err;
6335
6336         if (err == 0)
6337                 return -EINVAL;
6338
6339         if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef))
6340                 return -EINVAL;
6341
6342         if (!rdev->ops->start_radar_detection)
6343                 return -EOPNOTSUPP;
6344
6345         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
6346         if (WARN_ON(!cac_time_ms))
6347                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
6348
6349         err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef,
6350                                                cac_time_ms);
6351         if (!err) {
6352                 wdev->chandef = chandef;
6353                 wdev->cac_started = true;
6354                 wdev->cac_start_time = jiffies;
6355                 wdev->cac_time_ms = cac_time_ms;
6356         }
6357         return err;
6358 }
6359
6360 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
6361 {
6362         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6363         struct net_device *dev = info->user_ptr[1];
6364         struct wireless_dev *wdev = dev->ieee80211_ptr;
6365         struct cfg80211_csa_settings params;
6366         /* csa_attrs is defined static to avoid waste of stack size - this
6367          * function is called under RTNL lock, so this should not be a problem.
6368          */
6369         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
6370         int err;
6371         bool need_new_beacon = false;
6372         int len, i;
6373         u32 cs_count;
6374
6375         if (!rdev->ops->channel_switch ||
6376             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
6377                 return -EOPNOTSUPP;
6378
6379         switch (dev->ieee80211_ptr->iftype) {
6380         case NL80211_IFTYPE_AP:
6381         case NL80211_IFTYPE_P2P_GO:
6382                 need_new_beacon = true;
6383
6384                 /* useless if AP is not running */
6385                 if (!wdev->beacon_interval)
6386                         return -ENOTCONN;
6387                 break;
6388         case NL80211_IFTYPE_ADHOC:
6389                 if (!wdev->ssid_len)
6390                         return -ENOTCONN;
6391                 break;
6392         case NL80211_IFTYPE_MESH_POINT:
6393                 if (!wdev->mesh_id_len)
6394                         return -ENOTCONN;
6395                 break;
6396         default:
6397                 return -EOPNOTSUPP;
6398         }
6399
6400         memset(&params, 0, sizeof(params));
6401
6402         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
6403             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
6404                 return -EINVAL;
6405
6406         /* only important for AP, IBSS and mesh create IEs internally */
6407         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
6408                 return -EINVAL;
6409
6410         /* Even though the attribute is u32, the specification says
6411          * u8, so let's make sure we don't overflow.
6412          */
6413         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
6414         if (cs_count > 255)
6415                 return -EINVAL;
6416
6417         params.count = cs_count;
6418
6419         if (!need_new_beacon)
6420                 goto skip_beacons;
6421
6422         err = nl80211_parse_beacon(info->attrs, &params.beacon_after);
6423         if (err)
6424                 return err;
6425
6426         err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX,
6427                                info->attrs[NL80211_ATTR_CSA_IES],
6428                                nl80211_policy);
6429         if (err)
6430                 return err;
6431
6432         err = nl80211_parse_beacon(csa_attrs, &params.beacon_csa);
6433         if (err)
6434                 return err;
6435
6436         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
6437                 return -EINVAL;
6438
6439         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6440         if (!len || (len % sizeof(u16)))
6441                 return -EINVAL;
6442
6443         params.n_counter_offsets_beacon = len / sizeof(u16);
6444         if (rdev->wiphy.max_num_csa_counters &&
6445             (params.n_counter_offsets_beacon >
6446              rdev->wiphy.max_num_csa_counters))
6447                 return -EINVAL;
6448
6449         params.counter_offsets_beacon =
6450                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
6451
6452         /* sanity checks - counters should fit and be the same */
6453         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
6454                 u16 offset = params.counter_offsets_beacon[i];
6455
6456                 if (offset >= params.beacon_csa.tail_len)
6457                         return -EINVAL;
6458
6459                 if (params.beacon_csa.tail[offset] != params.count)
6460                         return -EINVAL;
6461         }
6462
6463         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
6464                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6465                 if (!len || (len % sizeof(u16)))
6466                         return -EINVAL;
6467
6468                 params.n_counter_offsets_presp = len / sizeof(u16);
6469                 if (rdev->wiphy.max_num_csa_counters &&
6470                     (params.n_counter_offsets_beacon >
6471                      rdev->wiphy.max_num_csa_counters))
6472                         return -EINVAL;
6473
6474                 params.counter_offsets_presp =
6475                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
6476
6477                 /* sanity checks - counters should fit and be the same */
6478                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
6479                         u16 offset = params.counter_offsets_presp[i];
6480
6481                         if (offset >= params.beacon_csa.probe_resp_len)
6482                                 return -EINVAL;
6483
6484                         if (params.beacon_csa.probe_resp[offset] !=
6485                             params.count)
6486                                 return -EINVAL;
6487                 }
6488         }
6489
6490 skip_beacons:
6491         err = nl80211_parse_chandef(rdev, info, &params.chandef);
6492         if (err)
6493                 return err;
6494
6495         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef,
6496                                      wdev->iftype))
6497                 return -EINVAL;
6498
6499         err = cfg80211_chandef_dfs_required(wdev->wiphy,
6500                                             &params.chandef,
6501                                             wdev->iftype);
6502         if (err < 0)
6503                 return err;
6504
6505         if (err > 0)
6506                 params.radar_required = true;
6507
6508         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
6509                 params.block_tx = true;
6510
6511         wdev_lock(wdev);
6512         err = rdev_channel_switch(rdev, dev, &params);
6513         wdev_unlock(wdev);
6514
6515         return err;
6516 }
6517
6518 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
6519                             u32 seq, int flags,
6520                             struct cfg80211_registered_device *rdev,
6521                             struct wireless_dev *wdev,
6522                             struct cfg80211_internal_bss *intbss)
6523 {
6524         struct cfg80211_bss *res = &intbss->pub;
6525         const struct cfg80211_bss_ies *ies;
6526         void *hdr;
6527         struct nlattr *bss;
6528
6529         ASSERT_WDEV_LOCK(wdev);
6530
6531         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
6532                              NL80211_CMD_NEW_SCAN_RESULTS);
6533         if (!hdr)
6534                 return -1;
6535
6536         genl_dump_check_consistent(cb, hdr, &nl80211_fam);
6537
6538         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
6539                 goto nla_put_failure;
6540         if (wdev->netdev &&
6541             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
6542                 goto nla_put_failure;
6543         if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
6544                 goto nla_put_failure;
6545
6546         bss = nla_nest_start(msg, NL80211_ATTR_BSS);
6547         if (!bss)
6548                 goto nla_put_failure;
6549         if ((!is_zero_ether_addr(res->bssid) &&
6550              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
6551                 goto nla_put_failure;
6552
6553         rcu_read_lock();
6554         /* indicate whether we have probe response data or not */
6555         if (rcu_access_pointer(res->proberesp_ies) &&
6556             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
6557                 goto fail_unlock_rcu;
6558
6559         /* this pointer prefers to be pointed to probe response data
6560          * but is always valid
6561          */
6562         ies = rcu_dereference(res->ies);
6563         if (ies) {
6564                 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf))
6565                         goto fail_unlock_rcu;
6566                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
6567                                         ies->len, ies->data))
6568                         goto fail_unlock_rcu;
6569         }
6570
6571         /* and this pointer is always (unless driver didn't know) beacon data */
6572         ies = rcu_dereference(res->beacon_ies);
6573         if (ies && ies->from_beacon) {
6574                 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf))
6575                         goto fail_unlock_rcu;
6576                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
6577                                         ies->len, ies->data))
6578                         goto fail_unlock_rcu;
6579         }
6580         rcu_read_unlock();
6581
6582         if (res->beacon_interval &&
6583             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
6584                 goto nla_put_failure;
6585         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
6586             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
6587             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
6588             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
6589                         jiffies_to_msecs(jiffies - intbss->ts)))
6590                 goto nla_put_failure;
6591
6592         switch (rdev->wiphy.signal_type) {
6593         case CFG80211_SIGNAL_TYPE_MBM:
6594                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
6595                         goto nla_put_failure;
6596                 break;
6597         case CFG80211_SIGNAL_TYPE_UNSPEC:
6598                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
6599                         goto nla_put_failure;
6600                 break;
6601         default:
6602                 break;
6603         }
6604
6605         switch (wdev->iftype) {
6606         case NL80211_IFTYPE_P2P_CLIENT:
6607         case NL80211_IFTYPE_STATION:
6608                 if (intbss == wdev->current_bss &&
6609                     nla_put_u32(msg, NL80211_BSS_STATUS,
6610                                 NL80211_BSS_STATUS_ASSOCIATED))
6611                         goto nla_put_failure;
6612                 break;
6613         case NL80211_IFTYPE_ADHOC:
6614                 if (intbss == wdev->current_bss &&
6615                     nla_put_u32(msg, NL80211_BSS_STATUS,
6616                                 NL80211_BSS_STATUS_IBSS_JOINED))
6617                         goto nla_put_failure;
6618                 break;
6619         default:
6620                 break;
6621         }
6622
6623         nla_nest_end(msg, bss);
6624
6625         genlmsg_end(msg, hdr);
6626         return 0;
6627
6628  fail_unlock_rcu:
6629         rcu_read_unlock();
6630  nla_put_failure:
6631         genlmsg_cancel(msg, hdr);
6632         return -EMSGSIZE;
6633 }
6634
6635 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
6636 {
6637         struct cfg80211_registered_device *rdev;
6638         struct cfg80211_internal_bss *scan;
6639         struct wireless_dev *wdev;
6640         int start = cb->args[2], idx = 0;
6641         int err;
6642
6643         err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6644         if (err)
6645                 return err;
6646
6647         wdev_lock(wdev);
6648         spin_lock_bh(&rdev->bss_lock);
6649         cfg80211_bss_expire(rdev);
6650
6651         cb->seq = rdev->bss_generation;
6652
6653         list_for_each_entry(scan, &rdev->bss_list, list) {
6654                 if (++idx <= start)
6655                         continue;
6656                 if (nl80211_send_bss(skb, cb,
6657                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6658                                 rdev, wdev, scan) < 0) {
6659                         idx--;
6660                         break;
6661                 }
6662         }
6663
6664         spin_unlock_bh(&rdev->bss_lock);
6665         wdev_unlock(wdev);
6666
6667         cb->args[2] = idx;
6668         nl80211_finish_wdev_dump(rdev);
6669
6670         return skb->len;
6671 }
6672
6673 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
6674                                int flags, struct net_device *dev,
6675                                bool allow_radio_stats,
6676                                struct survey_info *survey)
6677 {
6678         void *hdr;
6679         struct nlattr *infoattr;
6680
6681         /* skip radio stats if userspace didn't request them */
6682         if (!survey->channel && !allow_radio_stats)
6683                 return 0;
6684
6685         hdr = nl80211hdr_put(msg, portid, seq, flags,
6686                              NL80211_CMD_NEW_SURVEY_RESULTS);
6687         if (!hdr)
6688                 return -ENOMEM;
6689
6690         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
6691                 goto nla_put_failure;
6692
6693         infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO);
6694         if (!infoattr)
6695                 goto nla_put_failure;
6696
6697         if (survey->channel &&
6698             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
6699                         survey->channel->center_freq))
6700                 goto nla_put_failure;
6701
6702         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
6703             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
6704                 goto nla_put_failure;
6705         if ((survey->filled & SURVEY_INFO_IN_USE) &&
6706             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
6707                 goto nla_put_failure;
6708         if ((survey->filled & SURVEY_INFO_TIME) &&
6709             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME,
6710                         survey->time))
6711                 goto nla_put_failure;
6712         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
6713             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY,
6714                         survey->time_busy))
6715                 goto nla_put_failure;
6716         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
6717             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
6718                         survey->time_ext_busy))
6719                 goto nla_put_failure;
6720         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
6721             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX,
6722                         survey->time_rx))
6723                 goto nla_put_failure;
6724         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
6725             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX,
6726                         survey->time_tx))
6727                 goto nla_put_failure;
6728         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
6729             nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN,
6730                         survey->time_scan))
6731                 goto nla_put_failure;
6732
6733         nla_nest_end(msg, infoattr);
6734
6735         genlmsg_end(msg, hdr);
6736         return 0;
6737
6738  nla_put_failure:
6739         genlmsg_cancel(msg, hdr);
6740         return -EMSGSIZE;
6741 }
6742
6743 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
6744 {
6745         struct survey_info survey;
6746         struct cfg80211_registered_device *rdev;
6747         struct wireless_dev *wdev;
6748         int survey_idx = cb->args[2];
6749         int res;
6750         bool radio_stats;
6751
6752         res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev);
6753         if (res)
6754                 return res;
6755
6756         /* prepare_wdev_dump parsed the attributes */
6757         radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
6758
6759         if (!wdev->netdev) {
6760                 res = -EINVAL;
6761                 goto out_err;
6762         }
6763
6764         if (!rdev->ops->dump_survey) {
6765                 res = -EOPNOTSUPP;
6766                 goto out_err;
6767         }
6768
6769         while (1) {
6770                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
6771                 if (res == -ENOENT)
6772                         break;
6773                 if (res)
6774                         goto out_err;
6775
6776                 /* don't send disabled channels, but do send non-channel data */
6777                 if (survey.channel &&
6778                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
6779                         survey_idx++;
6780                         continue;
6781                 }
6782
6783                 if (nl80211_send_survey(skb,
6784                                 NETLINK_CB(cb->skb).portid,
6785                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6786                                 wdev->netdev, radio_stats, &survey) < 0)
6787                         goto out;
6788                 survey_idx++;
6789         }
6790
6791  out:
6792         cb->args[2] = survey_idx;
6793         res = skb->len;
6794  out_err:
6795         nl80211_finish_wdev_dump(rdev);
6796         return res;
6797 }
6798
6799 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
6800 {
6801         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
6802                                   NL80211_WPA_VERSION_2));
6803 }
6804
6805 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
6806 {
6807         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6808         struct net_device *dev = info->user_ptr[1];
6809         struct ieee80211_channel *chan;
6810         const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL;
6811         int err, ssid_len, ie_len = 0, sae_data_len = 0;
6812         enum nl80211_auth_type auth_type;
6813         struct key_parse key;
6814         bool local_state_change;
6815
6816         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
6817                 return -EINVAL;
6818
6819         if (!info->attrs[NL80211_ATTR_MAC])
6820                 return -EINVAL;
6821
6822         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
6823                 return -EINVAL;
6824
6825         if (!info->attrs[NL80211_ATTR_SSID])
6826                 return -EINVAL;
6827
6828         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
6829                 return -EINVAL;
6830
6831         err = nl80211_parse_key(info, &key);
6832         if (err)
6833                 return err;
6834
6835         if (key.idx >= 0) {
6836                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
6837                         return -EINVAL;
6838                 if (!key.p.key || !key.p.key_len)
6839                         return -EINVAL;
6840                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
6841                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
6842                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
6843                      key.p.key_len != WLAN_KEY_LEN_WEP104))
6844                         return -EINVAL;
6845                 if (key.idx > 4)
6846                         return -EINVAL;
6847         } else {
6848                 key.p.key_len = 0;
6849                 key.p.key = NULL;
6850         }
6851
6852         if (key.idx >= 0) {
6853                 int i;
6854                 bool ok = false;
6855                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
6856                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
6857                                 ok = true;
6858                                 break;
6859                         }
6860                 }
6861                 if (!ok)
6862                         return -EINVAL;
6863         }
6864
6865         if (!rdev->ops->auth)
6866                 return -EOPNOTSUPP;
6867
6868         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
6869             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
6870                 return -EOPNOTSUPP;
6871
6872         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
6873         chan = nl80211_get_valid_chan(&rdev->wiphy,
6874                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
6875         if (!chan)
6876                 return -EINVAL;
6877
6878         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
6879         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
6880
6881         if (info->attrs[NL80211_ATTR_IE]) {
6882                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
6883                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
6884         }
6885
6886         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
6887         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
6888                 return -EINVAL;
6889
6890         if (auth_type == NL80211_AUTHTYPE_SAE &&
6891             !info->attrs[NL80211_ATTR_SAE_DATA])
6892                 return -EINVAL;
6893
6894         if (info->attrs[NL80211_ATTR_SAE_DATA]) {
6895                 if (auth_type != NL80211_AUTHTYPE_SAE)
6896                         return -EINVAL;
6897                 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]);
6898                 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]);
6899                 /* need to include at least Auth Transaction and Status Code */
6900                 if (sae_data_len < 4)
6901                         return -EINVAL;
6902         }
6903
6904         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
6905
6906         /*
6907          * Since we no longer track auth state, ignore
6908          * requests to only change local state.
6909          */
6910         if (local_state_change)
6911                 return 0;
6912
6913         wdev_lock(dev->ieee80211_ptr);
6914         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
6915                                  ssid, ssid_len, ie, ie_len,
6916                                  key.p.key, key.p.key_len, key.idx,
6917                                  sae_data, sae_data_len);
6918         wdev_unlock(dev->ieee80211_ptr);
6919         return err;
6920 }
6921
6922 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
6923                                    struct genl_info *info,
6924                                    struct cfg80211_crypto_settings *settings,
6925                                    int cipher_limit)
6926 {
6927         memset(settings, 0, sizeof(*settings));
6928
6929         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
6930
6931         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
6932                 u16 proto;
6933                 proto = nla_get_u16(
6934                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
6935                 settings->control_port_ethertype = cpu_to_be16(proto);
6936                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
6937                     proto != ETH_P_PAE)
6938                         return -EINVAL;
6939                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
6940                         settings->control_port_no_encrypt = true;
6941         } else
6942                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
6943
6944         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
6945                 void *data;
6946                 int len, i;
6947
6948                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6949                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
6950                 settings->n_ciphers_pairwise = len / sizeof(u32);
6951
6952                 if (len % sizeof(u32))
6953                         return -EINVAL;
6954
6955                 if (settings->n_ciphers_pairwise > cipher_limit)
6956                         return -EINVAL;
6957
6958                 memcpy(settings->ciphers_pairwise, data, len);
6959
6960                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
6961                         if (!cfg80211_supported_cipher_suite(
6962                                         &rdev->wiphy,
6963                                         settings->ciphers_pairwise[i]))
6964                                 return -EINVAL;
6965         }
6966
6967         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
6968                 settings->cipher_group =
6969                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
6970                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
6971                                                      settings->cipher_group))
6972                         return -EINVAL;
6973         }
6974
6975         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
6976                 settings->wpa_versions =
6977                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
6978                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
6979                         return -EINVAL;
6980         }
6981
6982         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
6983                 void *data;
6984                 int len;
6985
6986                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
6987                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
6988                 settings->n_akm_suites = len / sizeof(u32);
6989
6990                 if (len % sizeof(u32))
6991                         return -EINVAL;
6992
6993                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
6994                         return -EINVAL;
6995
6996                 memcpy(settings->akm_suites, data, len);
6997         }
6998
6999         return 0;
7000 }
7001
7002 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
7003 {
7004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7005         struct net_device *dev = info->user_ptr[1];
7006         struct ieee80211_channel *chan;
7007         struct cfg80211_assoc_request req = {};
7008         const u8 *bssid, *ssid;
7009         int err, ssid_len = 0;
7010
7011         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7012                 return -EINVAL;
7013
7014         if (!info->attrs[NL80211_ATTR_MAC] ||
7015             !info->attrs[NL80211_ATTR_SSID] ||
7016             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
7017                 return -EINVAL;
7018
7019         if (!rdev->ops->assoc)
7020                 return -EOPNOTSUPP;
7021
7022         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7023             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7024                 return -EOPNOTSUPP;
7025
7026         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7027
7028         chan = nl80211_get_valid_chan(&rdev->wiphy,
7029                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7030         if (!chan)
7031                 return -EINVAL;
7032
7033         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7034         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7035
7036         if (info->attrs[NL80211_ATTR_IE]) {
7037                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7038                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7039         }
7040
7041         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7042                 enum nl80211_mfp mfp =
7043                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7044                 if (mfp == NL80211_MFP_REQUIRED)
7045                         req.use_mfp = true;
7046                 else if (mfp != NL80211_MFP_NO)
7047                         return -EINVAL;
7048         }
7049
7050         if (info->attrs[NL80211_ATTR_PREV_BSSID])
7051                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
7052
7053         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7054                 req.flags |= ASSOC_REQ_DISABLE_HT;
7055
7056         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7057                 memcpy(&req.ht_capa_mask,
7058                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7059                        sizeof(req.ht_capa_mask));
7060
7061         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7062                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7063                         return -EINVAL;
7064                 memcpy(&req.ht_capa,
7065                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7066                        sizeof(req.ht_capa));
7067         }
7068
7069         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7070                 req.flags |= ASSOC_REQ_DISABLE_VHT;
7071
7072         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7073                 memcpy(&req.vht_capa_mask,
7074                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7075                        sizeof(req.vht_capa_mask));
7076
7077         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7078                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7079                         return -EINVAL;
7080                 memcpy(&req.vht_capa,
7081                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7082                        sizeof(req.vht_capa));
7083         }
7084
7085         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7086                 if (!(rdev->wiphy.features &
7087                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7088                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7089                         return -EINVAL;
7090                 req.flags |= ASSOC_REQ_USE_RRM;
7091         }
7092
7093         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
7094         if (!err) {
7095                 wdev_lock(dev->ieee80211_ptr);
7096                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
7097                                           ssid, ssid_len, &req);
7098                 wdev_unlock(dev->ieee80211_ptr);
7099         }
7100
7101         return err;
7102 }
7103
7104 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
7105 {
7106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7107         struct net_device *dev = info->user_ptr[1];
7108         const u8 *ie = NULL, *bssid;
7109         int ie_len = 0, err;
7110         u16 reason_code;
7111         bool local_state_change;
7112
7113         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7114                 return -EINVAL;
7115
7116         if (!info->attrs[NL80211_ATTR_MAC])
7117                 return -EINVAL;
7118
7119         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7120                 return -EINVAL;
7121
7122         if (!rdev->ops->deauth)
7123                 return -EOPNOTSUPP;
7124
7125         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7126             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7127                 return -EOPNOTSUPP;
7128
7129         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7130
7131         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7132         if (reason_code == 0) {
7133                 /* Reason Code 0 is reserved */
7134                 return -EINVAL;
7135         }
7136
7137         if (info->attrs[NL80211_ATTR_IE]) {
7138                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7139                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7140         }
7141
7142         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7143
7144         wdev_lock(dev->ieee80211_ptr);
7145         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
7146                                    local_state_change);
7147         wdev_unlock(dev->ieee80211_ptr);
7148         return err;
7149 }
7150
7151 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
7152 {
7153         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7154         struct net_device *dev = info->user_ptr[1];
7155         const u8 *ie = NULL, *bssid;
7156         int ie_len = 0, err;
7157         u16 reason_code;
7158         bool local_state_change;
7159
7160         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7161                 return -EINVAL;
7162
7163         if (!info->attrs[NL80211_ATTR_MAC])
7164                 return -EINVAL;
7165
7166         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7167                 return -EINVAL;
7168
7169         if (!rdev->ops->disassoc)
7170                 return -EOPNOTSUPP;
7171
7172         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7173             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7174                 return -EOPNOTSUPP;
7175
7176         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7177
7178         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7179         if (reason_code == 0) {
7180                 /* Reason Code 0 is reserved */
7181                 return -EINVAL;
7182         }
7183
7184         if (info->attrs[NL80211_ATTR_IE]) {
7185                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7186                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7187         }
7188
7189         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
7190
7191         wdev_lock(dev->ieee80211_ptr);
7192         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
7193                                      local_state_change);
7194         wdev_unlock(dev->ieee80211_ptr);
7195         return err;
7196 }
7197
7198 static bool
7199 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
7200                          int mcast_rate[IEEE80211_NUM_BANDS],
7201                          int rateval)
7202 {
7203         struct wiphy *wiphy = &rdev->wiphy;
7204         bool found = false;
7205         int band, i;
7206
7207         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
7208                 struct ieee80211_supported_band *sband;
7209
7210                 sband = wiphy->bands[band];
7211                 if (!sband)
7212                         continue;
7213
7214                 for (i = 0; i < sband->n_bitrates; i++) {
7215                         if (sband->bitrates[i].bitrate == rateval) {
7216                                 mcast_rate[band] = i + 1;
7217                                 found = true;
7218                                 break;
7219                         }
7220                 }
7221         }
7222
7223         return found;
7224 }
7225
7226 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
7227 {
7228         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7229         struct net_device *dev = info->user_ptr[1];
7230         struct cfg80211_ibss_params ibss;
7231         struct wiphy *wiphy;
7232         struct cfg80211_cached_keys *connkeys = NULL;
7233         int err;
7234
7235         memset(&ibss, 0, sizeof(ibss));
7236
7237         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7238                 return -EINVAL;
7239
7240         if (!info->attrs[NL80211_ATTR_SSID] ||
7241             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7242                 return -EINVAL;
7243
7244         ibss.beacon_interval = 100;
7245
7246         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
7247                 ibss.beacon_interval =
7248                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
7249                 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000)
7250                         return -EINVAL;
7251         }
7252
7253         if (!rdev->ops->join_ibss)
7254                 return -EOPNOTSUPP;
7255
7256         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7257                 return -EOPNOTSUPP;
7258
7259         wiphy = &rdev->wiphy;
7260
7261         if (info->attrs[NL80211_ATTR_MAC]) {
7262                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7263
7264                 if (!is_valid_ether_addr(ibss.bssid))
7265                         return -EINVAL;
7266         }
7267         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7268         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7269
7270         if (info->attrs[NL80211_ATTR_IE]) {
7271                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7272                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7273         }
7274
7275         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
7276         if (err)
7277                 return err;
7278
7279         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
7280                                      NL80211_IFTYPE_ADHOC))
7281                 return -EINVAL;
7282
7283         switch (ibss.chandef.width) {
7284         case NL80211_CHAN_WIDTH_5:
7285         case NL80211_CHAN_WIDTH_10:
7286         case NL80211_CHAN_WIDTH_20_NOHT:
7287                 break;
7288         case NL80211_CHAN_WIDTH_20:
7289         case NL80211_CHAN_WIDTH_40:
7290                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7291                         return -EINVAL;
7292                 break;
7293         case NL80211_CHAN_WIDTH_80:
7294         case NL80211_CHAN_WIDTH_80P80:
7295         case NL80211_CHAN_WIDTH_160:
7296                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
7297                         return -EINVAL;
7298                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
7299                                              NL80211_EXT_FEATURE_VHT_IBSS))
7300                         return -EINVAL;
7301                 break;
7302         default:
7303                 return -EINVAL;
7304         }
7305
7306         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
7307         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
7308
7309         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7310                 u8 *rates =
7311                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7312                 int n_rates =
7313                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7314                 struct ieee80211_supported_band *sband =
7315                         wiphy->bands[ibss.chandef.chan->band];
7316
7317                 err = ieee80211_get_ratemask(sband, rates, n_rates,
7318                                              &ibss.basic_rates);
7319                 if (err)
7320                         return err;
7321         }
7322
7323         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7324                 memcpy(&ibss.ht_capa_mask,
7325                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7326                        sizeof(ibss.ht_capa_mask));
7327
7328         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7329                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7330                         return -EINVAL;
7331                 memcpy(&ibss.ht_capa,
7332                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7333                        sizeof(ibss.ht_capa));
7334         }
7335
7336         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
7337             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
7338                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
7339                 return -EINVAL;
7340
7341         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7342                 bool no_ht = false;
7343
7344                 connkeys = nl80211_parse_connkeys(rdev,
7345                                           info->attrs[NL80211_ATTR_KEYS],
7346                                           &no_ht);
7347                 if (IS_ERR(connkeys))
7348                         return PTR_ERR(connkeys);
7349
7350                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
7351                     no_ht) {
7352                         kfree(connkeys);
7353                         return -EINVAL;
7354                 }
7355         }
7356
7357         ibss.control_port =
7358                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
7359
7360         ibss.userspace_handles_dfs =
7361                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
7362
7363         err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
7364         if (err)
7365                 kzfree(connkeys);
7366         return err;
7367 }
7368
7369 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
7370 {
7371         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7372         struct net_device *dev = info->user_ptr[1];
7373
7374         if (!rdev->ops->leave_ibss)
7375                 return -EOPNOTSUPP;
7376
7377         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
7378                 return -EOPNOTSUPP;
7379
7380         return cfg80211_leave_ibss(rdev, dev, false);
7381 }
7382
7383 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
7384 {
7385         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7386         struct net_device *dev = info->user_ptr[1];
7387         int mcast_rate[IEEE80211_NUM_BANDS];
7388         u32 nla_rate;
7389         int err;
7390
7391         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
7392             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7393                 return -EOPNOTSUPP;
7394
7395         if (!rdev->ops->set_mcast_rate)
7396                 return -EOPNOTSUPP;
7397
7398         memset(mcast_rate, 0, sizeof(mcast_rate));
7399
7400         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
7401                 return -EINVAL;
7402
7403         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
7404         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
7405                 return -EINVAL;
7406
7407         err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate);
7408
7409         return err;
7410 }
7411
7412 static struct sk_buff *
7413 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
7414                             struct wireless_dev *wdev, int approxlen,
7415                             u32 portid, u32 seq, enum nl80211_commands cmd,
7416                             enum nl80211_attrs attr,
7417                             const struct nl80211_vendor_cmd_info *info,
7418                             gfp_t gfp)
7419 {
7420         struct sk_buff *skb;
7421         void *hdr;
7422         struct nlattr *data;
7423
7424         skb = nlmsg_new(approxlen + 100, gfp);
7425         if (!skb)
7426                 return NULL;
7427
7428         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
7429         if (!hdr) {
7430                 kfree_skb(skb);
7431                 return NULL;
7432         }
7433
7434         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
7435                 goto nla_put_failure;
7436
7437         if (info) {
7438                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
7439                                 info->vendor_id))
7440                         goto nla_put_failure;
7441                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
7442                                 info->subcmd))
7443                         goto nla_put_failure;
7444         }
7445
7446         if (wdev) {
7447                 if (nla_put_u64(skb, NL80211_ATTR_WDEV,
7448                                 wdev_id(wdev)))
7449                         goto nla_put_failure;
7450                 if (wdev->netdev &&
7451                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
7452                                 wdev->netdev->ifindex))
7453                         goto nla_put_failure;
7454         }
7455
7456         data = nla_nest_start(skb, attr);
7457
7458         ((void **)skb->cb)[0] = rdev;
7459         ((void **)skb->cb)[1] = hdr;
7460         ((void **)skb->cb)[2] = data;
7461
7462         return skb;
7463
7464  nla_put_failure:
7465         kfree_skb(skb);
7466         return NULL;
7467 }
7468
7469 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
7470                                            struct wireless_dev *wdev,
7471                                            enum nl80211_commands cmd,
7472                                            enum nl80211_attrs attr,
7473                                            int vendor_event_idx,
7474                                            int approxlen, gfp_t gfp)
7475 {
7476         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
7477         const struct nl80211_vendor_cmd_info *info;
7478
7479         switch (cmd) {
7480         case NL80211_CMD_TESTMODE:
7481                 if (WARN_ON(vendor_event_idx != -1))
7482                         return NULL;
7483                 info = NULL;
7484                 break;
7485         case NL80211_CMD_VENDOR:
7486                 if (WARN_ON(vendor_event_idx < 0 ||
7487                             vendor_event_idx >= wiphy->n_vendor_events))
7488                         return NULL;
7489                 info = &wiphy->vendor_events[vendor_event_idx];
7490                 break;
7491         default:
7492                 WARN_ON(1);
7493                 return NULL;
7494         }
7495
7496         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0,
7497                                            cmd, attr, info, gfp);
7498 }
7499 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
7500
7501 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
7502 {
7503         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
7504         void *hdr = ((void **)skb->cb)[1];
7505         struct nlattr *data = ((void **)skb->cb)[2];
7506         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
7507
7508         /* clear CB data for netlink core to own from now on */
7509         memset(skb->cb, 0, sizeof(skb->cb));
7510
7511         nla_nest_end(skb, data);
7512         genlmsg_end(skb, hdr);
7513
7514         if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
7515                 mcgrp = NL80211_MCGRP_VENDOR;
7516
7517         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0,
7518                                 mcgrp, gfp);
7519 }
7520 EXPORT_SYMBOL(__cfg80211_send_event_skb);
7521
7522 #ifdef CONFIG_NL80211_TESTMODE
7523 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
7524 {
7525         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7526         struct wireless_dev *wdev =
7527                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
7528         int err;
7529
7530         if (!rdev->ops->testmode_cmd)
7531                 return -EOPNOTSUPP;
7532
7533         if (IS_ERR(wdev)) {
7534                 err = PTR_ERR(wdev);
7535                 if (err != -EINVAL)
7536                         return err;
7537                 wdev = NULL;
7538         } else if (wdev->wiphy != &rdev->wiphy) {
7539                 return -EINVAL;
7540         }
7541
7542         if (!info->attrs[NL80211_ATTR_TESTDATA])
7543                 return -EINVAL;
7544
7545         rdev->cur_cmd_info = info;
7546         err = rdev_testmode_cmd(rdev, wdev,
7547                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
7548                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
7549         rdev->cur_cmd_info = NULL;
7550
7551         return err;
7552 }
7553
7554 static int nl80211_testmode_dump(struct sk_buff *skb,
7555                                  struct netlink_callback *cb)
7556 {
7557         struct cfg80211_registered_device *rdev;
7558         int err;
7559         long phy_idx;
7560         void *data = NULL;
7561         int data_len = 0;
7562
7563         rtnl_lock();
7564
7565         if (cb->args[0]) {
7566                 /*
7567                  * 0 is a valid index, but not valid for args[0],
7568                  * so we need to offset by 1.
7569                  */
7570                 phy_idx = cb->args[0] - 1;
7571         } else {
7572                 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize,
7573                                   nl80211_fam.attrbuf, nl80211_fam.maxattr,
7574                                   nl80211_policy);
7575                 if (err)
7576                         goto out_err;
7577
7578                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk),
7579                                                   nl80211_fam.attrbuf);
7580                 if (IS_ERR(rdev)) {
7581                         err = PTR_ERR(rdev);
7582                         goto out_err;
7583                 }
7584                 phy_idx = rdev->wiphy_idx;
7585                 rdev = NULL;
7586
7587                 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA])
7588                         cb->args[1] =
7589                                 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA];
7590         }
7591
7592         if (cb->args[1]) {
7593                 data = nla_data((void *)cb->args[1]);
7594                 data_len = nla_len((void *)cb->args[1]);
7595         }
7596
7597         rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
7598         if (!rdev) {
7599                 err = -ENOENT;
7600                 goto out_err;
7601         }
7602
7603         if (!rdev->ops->testmode_dump) {
7604                 err = -EOPNOTSUPP;
7605                 goto out_err;
7606         }
7607
7608         while (1) {
7609                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
7610                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
7611                                            NL80211_CMD_TESTMODE);
7612                 struct nlattr *tmdata;
7613
7614                 if (!hdr)
7615                         break;
7616
7617                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
7618                         genlmsg_cancel(skb, hdr);
7619                         break;
7620                 }
7621
7622                 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA);
7623                 if (!tmdata) {
7624                         genlmsg_cancel(skb, hdr);
7625                         break;
7626                 }
7627                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
7628                 nla_nest_end(skb, tmdata);
7629
7630                 if (err == -ENOBUFS || err == -ENOENT) {
7631                         genlmsg_cancel(skb, hdr);
7632                         break;
7633                 } else if (err) {
7634                         genlmsg_cancel(skb, hdr);
7635                         goto out_err;
7636                 }
7637
7638                 genlmsg_end(skb, hdr);
7639         }
7640
7641         err = skb->len;
7642         /* see above */
7643         cb->args[0] = phy_idx + 1;
7644  out_err:
7645         rtnl_unlock();
7646         return err;
7647 }
7648 #endif
7649
7650 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
7651 {
7652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7653         struct net_device *dev = info->user_ptr[1];
7654         struct cfg80211_connect_params connect;
7655         struct wiphy *wiphy;
7656         struct cfg80211_cached_keys *connkeys = NULL;
7657         int err;
7658
7659         memset(&connect, 0, sizeof(connect));
7660
7661         if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
7662                 return -EINVAL;
7663
7664         if (!info->attrs[NL80211_ATTR_SSID] ||
7665             !nla_len(info->attrs[NL80211_ATTR_SSID]))
7666                 return -EINVAL;
7667
7668         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
7669                 connect.auth_type =
7670                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
7671                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
7672                                              NL80211_CMD_CONNECT))
7673                         return -EINVAL;
7674         } else
7675                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
7676
7677         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
7678
7679         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
7680                                       NL80211_MAX_NR_CIPHER_SUITES);
7681         if (err)
7682                 return err;
7683
7684         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7685             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7686                 return -EOPNOTSUPP;
7687
7688         wiphy = &rdev->wiphy;
7689
7690         connect.bg_scan_period = -1;
7691         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
7692                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
7693                 connect.bg_scan_period =
7694                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
7695         }
7696
7697         if (info->attrs[NL80211_ATTR_MAC])
7698                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7699         else if (info->attrs[NL80211_ATTR_MAC_HINT])
7700                 connect.bssid_hint =
7701                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
7702         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
7703         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
7704
7705         if (info->attrs[NL80211_ATTR_IE]) {
7706                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
7707                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7708         }
7709
7710         if (info->attrs[NL80211_ATTR_USE_MFP]) {
7711                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
7712                 if (connect.mfp != NL80211_MFP_REQUIRED &&
7713                     connect.mfp != NL80211_MFP_NO)
7714                         return -EINVAL;
7715         } else {
7716                 connect.mfp = NL80211_MFP_NO;
7717         }
7718
7719         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
7720                 connect.channel = nl80211_get_valid_chan(
7721                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
7722                 if (!connect.channel)
7723                         return -EINVAL;
7724         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
7725                 connect.channel_hint = nl80211_get_valid_chan(
7726                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
7727                 if (!connect.channel_hint)
7728                         return -EINVAL;
7729         }
7730
7731         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
7732                 connkeys = nl80211_parse_connkeys(rdev,
7733                                           info->attrs[NL80211_ATTR_KEYS], NULL);
7734                 if (IS_ERR(connkeys))
7735                         return PTR_ERR(connkeys);
7736         }
7737
7738         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
7739                 connect.flags |= ASSOC_REQ_DISABLE_HT;
7740
7741         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
7742                 memcpy(&connect.ht_capa_mask,
7743                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
7744                        sizeof(connect.ht_capa_mask));
7745
7746         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
7747                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
7748                         kzfree(connkeys);
7749                         return -EINVAL;
7750                 }
7751                 memcpy(&connect.ht_capa,
7752                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
7753                        sizeof(connect.ht_capa));
7754         }
7755
7756         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
7757                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
7758
7759         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
7760                 memcpy(&connect.vht_capa_mask,
7761                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
7762                        sizeof(connect.vht_capa_mask));
7763
7764         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
7765                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
7766                         kzfree(connkeys);
7767                         return -EINVAL;
7768                 }
7769                 memcpy(&connect.vht_capa,
7770                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
7771                        sizeof(connect.vht_capa));
7772         }
7773
7774         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
7775                 if (!(rdev->wiphy.features &
7776                       NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
7777                     !(rdev->wiphy.features & NL80211_FEATURE_QUIET))
7778                         return -EINVAL;
7779                 connect.flags |= ASSOC_REQ_USE_RRM;
7780         }
7781
7782         wdev_lock(dev->ieee80211_ptr);
7783         err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
7784         wdev_unlock(dev->ieee80211_ptr);
7785         if (err)
7786                 kzfree(connkeys);
7787         return err;
7788 }
7789
7790 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
7791 {
7792         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7793         struct net_device *dev = info->user_ptr[1];
7794         u16 reason;
7795         int ret;
7796
7797         if (!info->attrs[NL80211_ATTR_REASON_CODE])
7798                 reason = WLAN_REASON_DEAUTH_LEAVING;
7799         else
7800                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
7801
7802         if (reason == 0)
7803                 return -EINVAL;
7804
7805         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7806             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7807                 return -EOPNOTSUPP;
7808
7809         wdev_lock(dev->ieee80211_ptr);
7810         ret = cfg80211_disconnect(rdev, dev, reason, true);
7811         wdev_unlock(dev->ieee80211_ptr);
7812         return ret;
7813 }
7814
7815 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
7816 {
7817         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7818         struct net *net;
7819         int err;
7820
7821         if (info->attrs[NL80211_ATTR_PID]) {
7822                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
7823
7824                 net = get_net_ns_by_pid(pid);
7825         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
7826                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
7827
7828                 net = get_net_ns_by_fd(fd);
7829         } else {
7830                 return -EINVAL;
7831         }
7832
7833         if (IS_ERR(net))
7834                 return PTR_ERR(net);
7835
7836         err = 0;
7837
7838         /* check if anything to do */
7839         if (!net_eq(wiphy_net(&rdev->wiphy), net))
7840                 err = cfg80211_switch_netns(rdev, net);
7841
7842         put_net(net);
7843         return err;
7844 }
7845
7846 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
7847 {
7848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7849         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
7850                         struct cfg80211_pmksa *pmksa) = NULL;
7851         struct net_device *dev = info->user_ptr[1];
7852         struct cfg80211_pmksa pmksa;
7853
7854         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
7855
7856         if (!info->attrs[NL80211_ATTR_MAC])
7857                 return -EINVAL;
7858
7859         if (!info->attrs[NL80211_ATTR_PMKID])
7860                 return -EINVAL;
7861
7862         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
7863         pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
7864
7865         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7866             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7867                 return -EOPNOTSUPP;
7868
7869         switch (info->genlhdr->cmd) {
7870         case NL80211_CMD_SET_PMKSA:
7871                 rdev_ops = rdev->ops->set_pmksa;
7872                 break;
7873         case NL80211_CMD_DEL_PMKSA:
7874                 rdev_ops = rdev->ops->del_pmksa;
7875                 break;
7876         default:
7877                 WARN_ON(1);
7878                 break;
7879         }
7880
7881         if (!rdev_ops)
7882                 return -EOPNOTSUPP;
7883
7884         return rdev_ops(&rdev->wiphy, dev, &pmksa);
7885 }
7886
7887 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
7888 {
7889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7890         struct net_device *dev = info->user_ptr[1];
7891
7892         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
7893             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
7894                 return -EOPNOTSUPP;
7895
7896         if (!rdev->ops->flush_pmksa)
7897                 return -EOPNOTSUPP;
7898
7899         return rdev_flush_pmksa(rdev, dev);
7900 }
7901
7902 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
7903 {
7904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7905         struct net_device *dev = info->user_ptr[1];
7906         u8 action_code, dialog_token;
7907         u32 peer_capability = 0;
7908         u16 status_code;
7909         u8 *peer;
7910         bool initiator;
7911
7912         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7913             !rdev->ops->tdls_mgmt)
7914                 return -EOPNOTSUPP;
7915
7916         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
7917             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
7918             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
7919             !info->attrs[NL80211_ATTR_IE] ||
7920             !info->attrs[NL80211_ATTR_MAC])
7921                 return -EINVAL;
7922
7923         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7924         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
7925         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
7926         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
7927         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
7928         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
7929                 peer_capability =
7930                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
7931
7932         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
7933                               dialog_token, status_code, peer_capability,
7934                               initiator,
7935                               nla_data(info->attrs[NL80211_ATTR_IE]),
7936                               nla_len(info->attrs[NL80211_ATTR_IE]));
7937 }
7938
7939 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
7940 {
7941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7942         struct net_device *dev = info->user_ptr[1];
7943         enum nl80211_tdls_operation operation;
7944         u8 *peer;
7945
7946         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
7947             !rdev->ops->tdls_oper)
7948                 return -EOPNOTSUPP;
7949
7950         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
7951             !info->attrs[NL80211_ATTR_MAC])
7952                 return -EINVAL;
7953
7954         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
7955         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
7956
7957         return rdev_tdls_oper(rdev, dev, peer, operation);
7958 }
7959
7960 static int nl80211_remain_on_channel(struct sk_buff *skb,
7961                                      struct genl_info *info)
7962 {
7963         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7964         struct wireless_dev *wdev = info->user_ptr[1];
7965         struct cfg80211_chan_def chandef;
7966         struct sk_buff *msg;
7967         void *hdr;
7968         u64 cookie;
7969         u32 duration;
7970         int err;
7971
7972         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
7973             !info->attrs[NL80211_ATTR_DURATION])
7974                 return -EINVAL;
7975
7976         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
7977
7978         if (!rdev->ops->remain_on_channel ||
7979             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
7980                 return -EOPNOTSUPP;
7981
7982         /*
7983          * We should be on that channel for at least a minimum amount of
7984          * time (10ms) but no longer than the driver supports.
7985          */
7986         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
7987             duration > rdev->wiphy.max_remain_on_channel_duration)
7988                 return -EINVAL;
7989
7990         err = nl80211_parse_chandef(rdev, info, &chandef);
7991         if (err)
7992                 return err;
7993
7994         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7995         if (!msg)
7996                 return -ENOMEM;
7997
7998         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7999                              NL80211_CMD_REMAIN_ON_CHANNEL);
8000         if (!hdr) {
8001                 err = -ENOBUFS;
8002                 goto free_msg;
8003         }
8004
8005         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
8006                                      duration, &cookie);
8007
8008         if (err)
8009                 goto free_msg;
8010
8011         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8012                 goto nla_put_failure;
8013
8014         genlmsg_end(msg, hdr);
8015
8016         return genlmsg_reply(msg, info);
8017
8018  nla_put_failure:
8019         err = -ENOBUFS;
8020  free_msg:
8021         nlmsg_free(msg);
8022         return err;
8023 }
8024
8025 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
8026                                             struct genl_info *info)
8027 {
8028         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8029         struct wireless_dev *wdev = info->user_ptr[1];
8030         u64 cookie;
8031
8032         if (!info->attrs[NL80211_ATTR_COOKIE])
8033                 return -EINVAL;
8034
8035         if (!rdev->ops->cancel_remain_on_channel)
8036                 return -EOPNOTSUPP;
8037
8038         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8039
8040         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
8041 }
8042
8043 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
8044                            u8 *rates, u8 rates_len)
8045 {
8046         u8 i;
8047         u32 mask = 0;
8048
8049         for (i = 0; i < rates_len; i++) {
8050                 int rate = (rates[i] & 0x7f) * 5;
8051                 int ridx;
8052                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
8053                         struct ieee80211_rate *srate =
8054                                 &sband->bitrates[ridx];
8055                         if (rate == srate->bitrate) {
8056                                 mask |= 1 << ridx;
8057                                 break;
8058                         }
8059                 }
8060                 if (ridx == sband->n_bitrates)
8061                         return 0; /* rate not found */
8062         }
8063
8064         return mask;
8065 }
8066
8067 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
8068                                u8 *rates, u8 rates_len,
8069                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
8070 {
8071         u8 i;
8072
8073         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
8074
8075         for (i = 0; i < rates_len; i++) {
8076                 int ridx, rbit;
8077
8078                 ridx = rates[i] / 8;
8079                 rbit = BIT(rates[i] % 8);
8080
8081                 /* check validity */
8082                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
8083                         return false;
8084
8085                 /* check availability */
8086                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
8087                         mcs[ridx] |= rbit;
8088                 else
8089                         return false;
8090         }
8091
8092         return true;
8093 }
8094
8095 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
8096 {
8097         u16 mcs_mask = 0;
8098
8099         switch (vht_mcs_map) {
8100         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
8101                 break;
8102         case IEEE80211_VHT_MCS_SUPPORT_0_7:
8103                 mcs_mask = 0x00FF;
8104                 break;
8105         case IEEE80211_VHT_MCS_SUPPORT_0_8:
8106                 mcs_mask = 0x01FF;
8107                 break;
8108         case IEEE80211_VHT_MCS_SUPPORT_0_9:
8109                 mcs_mask = 0x03FF;
8110                 break;
8111         default:
8112                 break;
8113         }
8114
8115         return mcs_mask;
8116 }
8117
8118 static void vht_build_mcs_mask(u16 vht_mcs_map,
8119                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
8120 {
8121         u8 nss;
8122
8123         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
8124                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
8125                 vht_mcs_map >>= 2;
8126         }
8127 }
8128
8129 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
8130                              struct nl80211_txrate_vht *txrate,
8131                              u16 mcs[NL80211_VHT_NSS_MAX])
8132 {
8133         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8134         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
8135         u8 i;
8136
8137         if (!sband->vht_cap.vht_supported)
8138                 return false;
8139
8140         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
8141
8142         /* Build vht_mcs_mask from VHT capabilities */
8143         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
8144
8145         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
8146                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
8147                         mcs[i] = txrate->mcs[i];
8148                 else
8149                         return false;
8150         }
8151
8152         return true;
8153 }
8154
8155 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
8156         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
8157                                     .len = NL80211_MAX_SUPP_RATES },
8158         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
8159                                 .len = NL80211_MAX_SUPP_HT_RATES },
8160         [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)},
8161         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
8162 };
8163
8164 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
8165                                        struct genl_info *info)
8166 {
8167         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
8168         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8169         struct cfg80211_bitrate_mask mask;
8170         int rem, i;
8171         struct net_device *dev = info->user_ptr[1];
8172         struct nlattr *tx_rates;
8173         struct ieee80211_supported_band *sband;
8174         u16 vht_tx_mcs_map;
8175
8176         if (!rdev->ops->set_bitrate_mask)
8177                 return -EOPNOTSUPP;
8178
8179         memset(&mask, 0, sizeof(mask));
8180         /* Default to all rates enabled */
8181         for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
8182                 sband = rdev->wiphy.bands[i];
8183
8184                 if (!sband)
8185                         continue;
8186
8187                 mask.control[i].legacy = (1 << sband->n_bitrates) - 1;
8188                 memcpy(mask.control[i].ht_mcs,
8189                        sband->ht_cap.mcs.rx_mask,
8190                        sizeof(mask.control[i].ht_mcs));
8191
8192                 if (!sband->vht_cap.vht_supported)
8193                         continue;
8194
8195                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
8196                 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs);
8197         }
8198
8199         /* if no rates are given set it back to the defaults */
8200         if (!info->attrs[NL80211_ATTR_TX_RATES])
8201                 goto out;
8202
8203         /*
8204          * The nested attribute uses enum nl80211_band as the index. This maps
8205          * directly to the enum ieee80211_band values used in cfg80211.
8206          */
8207         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
8208         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
8209                 enum ieee80211_band band = nla_type(tx_rates);
8210                 int err;
8211
8212                 if (band < 0 || band >= IEEE80211_NUM_BANDS)
8213                         return -EINVAL;
8214                 sband = rdev->wiphy.bands[band];
8215                 if (sband == NULL)
8216                         return -EINVAL;
8217                 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
8218                                 nla_len(tx_rates), nl80211_txattr_policy);
8219                 if (err)
8220                         return err;
8221                 if (tb[NL80211_TXRATE_LEGACY]) {
8222                         mask.control[band].legacy = rateset_to_mask(
8223                                 sband,
8224                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
8225                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
8226                         if ((mask.control[band].legacy == 0) &&
8227                             nla_len(tb[NL80211_TXRATE_LEGACY]))
8228                                 return -EINVAL;
8229                 }
8230                 if (tb[NL80211_TXRATE_HT]) {
8231                         if (!ht_rateset_to_mask(
8232                                         sband,
8233                                         nla_data(tb[NL80211_TXRATE_HT]),
8234                                         nla_len(tb[NL80211_TXRATE_HT]),
8235                                         mask.control[band].ht_mcs))
8236                                 return -EINVAL;
8237                 }
8238                 if (tb[NL80211_TXRATE_VHT]) {
8239                         if (!vht_set_mcs_mask(
8240                                         sband,
8241                                         nla_data(tb[NL80211_TXRATE_VHT]),
8242                                         mask.control[band].vht_mcs))
8243                                 return -EINVAL;
8244                 }
8245                 if (tb[NL80211_TXRATE_GI]) {
8246                         mask.control[band].gi =
8247                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
8248                         if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI)
8249                                 return -EINVAL;
8250                 }
8251
8252                 if (mask.control[band].legacy == 0) {
8253                         /* don't allow empty legacy rates if HT or VHT
8254                          * are not even supported.
8255                          */
8256                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
8257                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
8258                                 return -EINVAL;
8259
8260                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
8261                                 if (mask.control[band].ht_mcs[i])
8262                                         goto out;
8263
8264                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
8265                                 if (mask.control[band].vht_mcs[i])
8266                                         goto out;
8267
8268                         /* legacy and mcs rates may not be both empty */
8269                         return -EINVAL;
8270                 }
8271         }
8272
8273 out:
8274         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
8275 }
8276
8277 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
8278 {
8279         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8280         struct wireless_dev *wdev = info->user_ptr[1];
8281         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
8282
8283         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
8284                 return -EINVAL;
8285
8286         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
8287                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
8288
8289         switch (wdev->iftype) {
8290         case NL80211_IFTYPE_STATION:
8291         case NL80211_IFTYPE_ADHOC:
8292         case NL80211_IFTYPE_P2P_CLIENT:
8293         case NL80211_IFTYPE_AP:
8294         case NL80211_IFTYPE_AP_VLAN:
8295         case NL80211_IFTYPE_MESH_POINT:
8296         case NL80211_IFTYPE_P2P_GO:
8297         case NL80211_IFTYPE_P2P_DEVICE:
8298                 break;
8299         default:
8300                 return -EOPNOTSUPP;
8301         }
8302
8303         /* not much point in registering if we can't reply */
8304         if (!rdev->ops->mgmt_tx)
8305                 return -EOPNOTSUPP;
8306
8307         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
8308                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
8309                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
8310 }
8311
8312 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
8313 {
8314         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8315         struct wireless_dev *wdev = info->user_ptr[1];
8316         struct cfg80211_chan_def chandef;
8317         int err;
8318         void *hdr = NULL;
8319         u64 cookie;
8320         struct sk_buff *msg = NULL;
8321         struct cfg80211_mgmt_tx_params params = {
8322                 .dont_wait_for_ack =
8323                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
8324         };
8325
8326         if (!info->attrs[NL80211_ATTR_FRAME])
8327                 return -EINVAL;
8328
8329         if (!rdev->ops->mgmt_tx)
8330                 return -EOPNOTSUPP;
8331
8332         switch (wdev->iftype) {
8333         case NL80211_IFTYPE_P2P_DEVICE:
8334                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8335                         return -EINVAL;
8336         case NL80211_IFTYPE_STATION:
8337         case NL80211_IFTYPE_ADHOC:
8338         case NL80211_IFTYPE_P2P_CLIENT:
8339         case NL80211_IFTYPE_AP:
8340         case NL80211_IFTYPE_AP_VLAN:
8341         case NL80211_IFTYPE_MESH_POINT:
8342         case NL80211_IFTYPE_P2P_GO:
8343                 break;
8344         default:
8345                 return -EOPNOTSUPP;
8346         }
8347
8348         if (info->attrs[NL80211_ATTR_DURATION]) {
8349                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8350                         return -EINVAL;
8351                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
8352
8353                 /*
8354                  * We should wait on the channel for at least a minimum amount
8355                  * of time (10ms) but no longer than the driver supports.
8356                  */
8357                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
8358                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
8359                         return -EINVAL;
8360
8361         }
8362
8363         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
8364
8365         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
8366                 return -EINVAL;
8367
8368         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8369
8370         /* get the channel if any has been specified, otherwise pass NULL to
8371          * the driver. The latter will use the current one
8372          */
8373         chandef.chan = NULL;
8374         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8375                 err = nl80211_parse_chandef(rdev, info, &chandef);
8376                 if (err)
8377                         return err;
8378         }
8379
8380         if (!chandef.chan && params.offchan)
8381                 return -EINVAL;
8382
8383         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
8384         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
8385
8386         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
8387                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8388                 int i;
8389
8390                 if (len % sizeof(u16))
8391                         return -EINVAL;
8392
8393                 params.n_csa_offsets = len / sizeof(u16);
8394                 params.csa_offsets =
8395                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
8396
8397                 /* check that all the offsets fit the frame */
8398                 for (i = 0; i < params.n_csa_offsets; i++) {
8399                         if (params.csa_offsets[i] >= params.len)
8400                                 return -EINVAL;
8401                 }
8402         }
8403
8404         if (!params.dont_wait_for_ack) {
8405                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8406                 if (!msg)
8407                         return -ENOMEM;
8408
8409                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8410                                      NL80211_CMD_FRAME);
8411                 if (!hdr) {
8412                         err = -ENOBUFS;
8413                         goto free_msg;
8414                 }
8415         }
8416
8417         params.chan = chandef.chan;
8418         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
8419         if (err)
8420                 goto free_msg;
8421
8422         if (msg) {
8423                 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
8424                         goto nla_put_failure;
8425
8426                 genlmsg_end(msg, hdr);
8427                 return genlmsg_reply(msg, info);
8428         }
8429
8430         return 0;
8431
8432  nla_put_failure:
8433         err = -ENOBUFS;
8434  free_msg:
8435         nlmsg_free(msg);
8436         return err;
8437 }
8438
8439 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
8440 {
8441         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8442         struct wireless_dev *wdev = info->user_ptr[1];
8443         u64 cookie;
8444
8445         if (!info->attrs[NL80211_ATTR_COOKIE])
8446                 return -EINVAL;
8447
8448         if (!rdev->ops->mgmt_tx_cancel_wait)
8449                 return -EOPNOTSUPP;
8450
8451         switch (wdev->iftype) {
8452         case NL80211_IFTYPE_STATION:
8453         case NL80211_IFTYPE_ADHOC:
8454         case NL80211_IFTYPE_P2P_CLIENT:
8455         case NL80211_IFTYPE_AP:
8456         case NL80211_IFTYPE_AP_VLAN:
8457         case NL80211_IFTYPE_P2P_GO:
8458         case NL80211_IFTYPE_P2P_DEVICE:
8459                 break;
8460         default:
8461                 return -EOPNOTSUPP;
8462         }
8463
8464         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8465
8466         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
8467 }
8468
8469 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
8470 {
8471         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8472         struct wireless_dev *wdev;
8473         struct net_device *dev = info->user_ptr[1];
8474         u8 ps_state;
8475         bool state;
8476         int err;
8477
8478         if (!info->attrs[NL80211_ATTR_PS_STATE])
8479                 return -EINVAL;
8480
8481         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
8482
8483         if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED)
8484                 return -EINVAL;
8485
8486         wdev = dev->ieee80211_ptr;
8487
8488         if (!rdev->ops->set_power_mgmt)
8489                 return -EOPNOTSUPP;
8490
8491         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
8492
8493         if (state == wdev->ps)
8494                 return 0;
8495
8496         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
8497         if (!err)
8498                 wdev->ps = state;
8499         return err;
8500 }
8501
8502 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
8503 {
8504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8505         enum nl80211_ps_state ps_state;
8506         struct wireless_dev *wdev;
8507         struct net_device *dev = info->user_ptr[1];
8508         struct sk_buff *msg;
8509         void *hdr;
8510         int err;
8511
8512         wdev = dev->ieee80211_ptr;
8513
8514         if (!rdev->ops->set_power_mgmt)
8515                 return -EOPNOTSUPP;
8516
8517         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
8518         if (!msg)
8519                 return -ENOMEM;
8520
8521         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8522                              NL80211_CMD_GET_POWER_SAVE);
8523         if (!hdr) {
8524                 err = -ENOBUFS;
8525                 goto free_msg;
8526         }
8527
8528         if (wdev->ps)
8529                 ps_state = NL80211_PS_ENABLED;
8530         else
8531                 ps_state = NL80211_PS_DISABLED;
8532
8533         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
8534                 goto nla_put_failure;
8535
8536         genlmsg_end(msg, hdr);
8537         return genlmsg_reply(msg, info);
8538
8539  nla_put_failure:
8540         err = -ENOBUFS;
8541  free_msg:
8542         nlmsg_free(msg);
8543         return err;
8544 }
8545
8546 static const struct nla_policy
8547 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
8548         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 },
8549         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
8550         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
8551         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
8552         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
8553         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
8554 };
8555
8556 static int nl80211_set_cqm_txe(struct genl_info *info,
8557                                u32 rate, u32 pkts, u32 intvl)
8558 {
8559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8560         struct net_device *dev = info->user_ptr[1];
8561         struct wireless_dev *wdev = dev->ieee80211_ptr;
8562
8563         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
8564                 return -EINVAL;
8565
8566         if (!rdev->ops->set_cqm_txe_config)
8567                 return -EOPNOTSUPP;
8568
8569         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8570             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8571                 return -EOPNOTSUPP;
8572
8573         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
8574 }
8575
8576 static int nl80211_set_cqm_rssi(struct genl_info *info,
8577                                 s32 threshold, u32 hysteresis)
8578 {
8579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8580         struct net_device *dev = info->user_ptr[1];
8581         struct wireless_dev *wdev = dev->ieee80211_ptr;
8582
8583         if (threshold > 0)
8584                 return -EINVAL;
8585
8586         /* disabling - hysteresis should also be zero then */
8587         if (threshold == 0)
8588                 hysteresis = 0;
8589
8590         if (!rdev->ops->set_cqm_rssi_config)
8591                 return -EOPNOTSUPP;
8592
8593         if (wdev->iftype != NL80211_IFTYPE_STATION &&
8594             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
8595                 return -EOPNOTSUPP;
8596
8597         return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis);
8598 }
8599
8600 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
8601 {
8602         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
8603         struct nlattr *cqm;
8604         int err;
8605
8606         cqm = info->attrs[NL80211_ATTR_CQM];
8607         if (!cqm)
8608                 return -EINVAL;
8609
8610         err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm,
8611                                nl80211_attr_cqm_policy);
8612         if (err)
8613                 return err;
8614
8615         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
8616             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
8617                 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
8618                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
8619
8620                 return nl80211_set_cqm_rssi(info, threshold, hysteresis);
8621         }
8622
8623         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
8624             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
8625             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
8626                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
8627                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
8628                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
8629
8630                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
8631         }
8632
8633         return -EINVAL;
8634 }
8635
8636 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
8637 {
8638         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8639         struct net_device *dev = info->user_ptr[1];
8640         struct ocb_setup setup = {};
8641         int err;
8642
8643         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8644         if (err)
8645                 return err;
8646
8647         return cfg80211_join_ocb(rdev, dev, &setup);
8648 }
8649
8650 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
8651 {
8652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8653         struct net_device *dev = info->user_ptr[1];
8654
8655         return cfg80211_leave_ocb(rdev, dev);
8656 }
8657
8658 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
8659 {
8660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8661         struct net_device *dev = info->user_ptr[1];
8662         struct mesh_config cfg;
8663         struct mesh_setup setup;
8664         int err;
8665
8666         /* start with default */
8667         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
8668         memcpy(&setup, &default_mesh_setup, sizeof(setup));
8669
8670         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
8671                 /* and parse parameters if given */
8672                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
8673                 if (err)
8674                         return err;
8675         }
8676
8677         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
8678             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
8679                 return -EINVAL;
8680
8681         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
8682         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
8683
8684         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
8685             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
8686                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
8687                         return -EINVAL;
8688
8689         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
8690                 setup.beacon_interval =
8691                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
8692                 if (setup.beacon_interval < 10 ||
8693                     setup.beacon_interval > 10000)
8694                         return -EINVAL;
8695         }
8696
8697         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
8698                 setup.dtim_period =
8699                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
8700                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
8701                         return -EINVAL;
8702         }
8703
8704         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
8705                 /* parse additional setup parameters if given */
8706                 err = nl80211_parse_mesh_setup(info, &setup);
8707                 if (err)
8708                         return err;
8709         }
8710
8711         if (setup.user_mpm)
8712                 cfg.auto_open_plinks = false;
8713
8714         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
8715                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
8716                 if (err)
8717                         return err;
8718         } else {
8719                 /* cfg80211_join_mesh() will sort it out */
8720                 setup.chandef.chan = NULL;
8721         }
8722
8723         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
8724                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8725                 int n_rates =
8726                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
8727                 struct ieee80211_supported_band *sband;
8728
8729                 if (!setup.chandef.chan)
8730                         return -EINVAL;
8731
8732                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
8733
8734                 err = ieee80211_get_ratemask(sband, rates, n_rates,
8735                                              &setup.basic_rates);
8736                 if (err)
8737                         return err;
8738         }
8739
8740         return cfg80211_join_mesh(rdev, dev, &setup, &cfg);
8741 }
8742
8743 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
8744 {
8745         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8746         struct net_device *dev = info->user_ptr[1];
8747
8748         return cfg80211_leave_mesh(rdev, dev);
8749 }
8750
8751 #ifdef CONFIG_PM
8752 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
8753                                         struct cfg80211_registered_device *rdev)
8754 {
8755         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
8756         struct nlattr *nl_pats, *nl_pat;
8757         int i, pat_len;
8758
8759         if (!wowlan->n_patterns)
8760                 return 0;
8761
8762         nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
8763         if (!nl_pats)
8764                 return -ENOBUFS;
8765
8766         for (i = 0; i < wowlan->n_patterns; i++) {
8767                 nl_pat = nla_nest_start(msg, i + 1);
8768                 if (!nl_pat)
8769                         return -ENOBUFS;
8770                 pat_len = wowlan->patterns[i].pattern_len;
8771                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
8772                             wowlan->patterns[i].mask) ||
8773                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
8774                             wowlan->patterns[i].pattern) ||
8775                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
8776                                 wowlan->patterns[i].pkt_offset))
8777                         return -ENOBUFS;
8778                 nla_nest_end(msg, nl_pat);
8779         }
8780         nla_nest_end(msg, nl_pats);
8781
8782         return 0;
8783 }
8784
8785 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
8786                                    struct cfg80211_wowlan_tcp *tcp)
8787 {
8788         struct nlattr *nl_tcp;
8789
8790         if (!tcp)
8791                 return 0;
8792
8793         nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION);
8794         if (!nl_tcp)
8795                 return -ENOBUFS;
8796
8797         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
8798             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
8799             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
8800             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
8801             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
8802             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
8803                     tcp->payload_len, tcp->payload) ||
8804             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
8805                         tcp->data_interval) ||
8806             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
8807                     tcp->wake_len, tcp->wake_data) ||
8808             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
8809                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
8810                 return -ENOBUFS;
8811
8812         if (tcp->payload_seq.len &&
8813             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
8814                     sizeof(tcp->payload_seq), &tcp->payload_seq))
8815                 return -ENOBUFS;
8816
8817         if (tcp->payload_tok.len &&
8818             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
8819                     sizeof(tcp->payload_tok) + tcp->tokens_size,
8820                     &tcp->payload_tok))
8821                 return -ENOBUFS;
8822
8823         nla_nest_end(msg, nl_tcp);
8824
8825         return 0;
8826 }
8827
8828 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
8829                                   struct cfg80211_sched_scan_request *req)
8830 {
8831         struct nlattr *nd, *freqs, *matches, *match;
8832         int i;
8833
8834         if (!req)
8835                 return 0;
8836
8837         nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
8838         if (!nd)
8839                 return -ENOBUFS;
8840
8841         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval))
8842                 return -ENOBUFS;
8843
8844         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
8845                 return -ENOBUFS;
8846
8847         freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
8848         if (!freqs)
8849                 return -ENOBUFS;
8850
8851         for (i = 0; i < req->n_channels; i++)
8852                 nla_put_u32(msg, i, req->channels[i]->center_freq);
8853
8854         nla_nest_end(msg, freqs);
8855
8856         if (req->n_match_sets) {
8857                 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH);
8858                 for (i = 0; i < req->n_match_sets; i++) {
8859                         match = nla_nest_start(msg, i);
8860                         nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
8861                                 req->match_sets[i].ssid.ssid_len,
8862                                 req->match_sets[i].ssid.ssid);
8863                         nla_nest_end(msg, match);
8864                 }
8865                 nla_nest_end(msg, matches);
8866         }
8867
8868         nla_nest_end(msg, nd);
8869
8870         return 0;
8871 }
8872
8873 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
8874 {
8875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8876         struct sk_buff *msg;
8877         void *hdr;
8878         u32 size = NLMSG_DEFAULT_SIZE;
8879
8880         if (!rdev->wiphy.wowlan)
8881                 return -EOPNOTSUPP;
8882
8883         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
8884                 /* adjust size to have room for all the data */
8885                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
8886                         rdev->wiphy.wowlan_config->tcp->payload_len +
8887                         rdev->wiphy.wowlan_config->tcp->wake_len +
8888                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
8889         }
8890
8891         msg = nlmsg_new(size, GFP_KERNEL);
8892         if (!msg)
8893                 return -ENOMEM;
8894
8895         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
8896                              NL80211_CMD_GET_WOWLAN);
8897         if (!hdr)
8898                 goto nla_put_failure;
8899
8900         if (rdev->wiphy.wowlan_config) {
8901                 struct nlattr *nl_wowlan;
8902
8903                 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
8904                 if (!nl_wowlan)
8905                         goto nla_put_failure;
8906
8907                 if ((rdev->wiphy.wowlan_config->any &&
8908                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
8909                     (rdev->wiphy.wowlan_config->disconnect &&
8910                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
8911                     (rdev->wiphy.wowlan_config->magic_pkt &&
8912                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
8913                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
8914                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
8915                     (rdev->wiphy.wowlan_config->eap_identity_req &&
8916                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
8917                     (rdev->wiphy.wowlan_config->four_way_handshake &&
8918                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
8919                     (rdev->wiphy.wowlan_config->rfkill_release &&
8920                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
8921                         goto nla_put_failure;
8922
8923                 if (nl80211_send_wowlan_patterns(msg, rdev))
8924                         goto nla_put_failure;
8925
8926                 if (nl80211_send_wowlan_tcp(msg,
8927                                             rdev->wiphy.wowlan_config->tcp))
8928                         goto nla_put_failure;
8929
8930                 if (nl80211_send_wowlan_nd(
8931                             msg,
8932                             rdev->wiphy.wowlan_config->nd_config))
8933                         goto nla_put_failure;
8934
8935                 nla_nest_end(msg, nl_wowlan);
8936         }
8937
8938         genlmsg_end(msg, hdr);
8939         return genlmsg_reply(msg, info);
8940
8941 nla_put_failure:
8942         nlmsg_free(msg);
8943         return -ENOBUFS;
8944 }
8945
8946 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
8947                                     struct nlattr *attr,
8948                                     struct cfg80211_wowlan *trig)
8949 {
8950         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
8951         struct cfg80211_wowlan_tcp *cfg;
8952         struct nl80211_wowlan_tcp_data_token *tok = NULL;
8953         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
8954         u32 size;
8955         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
8956         int err, port;
8957
8958         if (!rdev->wiphy.wowlan->tcp)
8959                 return -EINVAL;
8960
8961         err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP,
8962                         nla_data(attr), nla_len(attr),
8963                         nl80211_wowlan_tcp_policy);
8964         if (err)
8965                 return err;
8966
8967         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
8968             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
8969             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
8970             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
8971             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
8972             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
8973             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
8974             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
8975                 return -EINVAL;
8976
8977         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
8978         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
8979                 return -EINVAL;
8980
8981         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
8982                         rdev->wiphy.wowlan->tcp->data_interval_max ||
8983             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
8984                 return -EINVAL;
8985
8986         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
8987         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
8988                 return -EINVAL;
8989
8990         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
8991         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
8992                 return -EINVAL;
8993
8994         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
8995                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8996
8997                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
8998                 tokens_size = tokln - sizeof(*tok);
8999
9000                 if (!tok->len || tokens_size % tok->len)
9001                         return -EINVAL;
9002                 if (!rdev->wiphy.wowlan->tcp->tok)
9003                         return -EINVAL;
9004                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
9005                         return -EINVAL;
9006                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
9007                         return -EINVAL;
9008                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
9009                         return -EINVAL;
9010                 if (tok->offset + tok->len > data_size)
9011                         return -EINVAL;
9012         }
9013
9014         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
9015                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
9016                 if (!rdev->wiphy.wowlan->tcp->seq)
9017                         return -EINVAL;
9018                 if (seq->len == 0 || seq->len > 4)
9019                         return -EINVAL;
9020                 if (seq->len + seq->offset > data_size)
9021                         return -EINVAL;
9022         }
9023
9024         size = sizeof(*cfg);
9025         size += data_size;
9026         size += wake_size + wake_mask_size;
9027         size += tokens_size;
9028
9029         cfg = kzalloc(size, GFP_KERNEL);
9030         if (!cfg)
9031                 return -ENOMEM;
9032         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
9033         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
9034         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
9035                ETH_ALEN);
9036         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
9037                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
9038         else
9039                 port = 0;
9040 #ifdef CONFIG_INET
9041         /* allocate a socket and port for it and use it */
9042         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
9043                             IPPROTO_TCP, &cfg->sock, 1);
9044         if (err) {
9045                 kfree(cfg);
9046                 return err;
9047         }
9048         if (inet_csk_get_port(cfg->sock->sk, port)) {
9049                 sock_release(cfg->sock);
9050                 kfree(cfg);
9051                 return -EADDRINUSE;
9052         }
9053         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
9054 #else
9055         if (!port) {
9056                 kfree(cfg);
9057                 return -EINVAL;
9058         }
9059         cfg->src_port = port;
9060 #endif
9061
9062         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
9063         cfg->payload_len = data_size;
9064         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
9065         memcpy((void *)cfg->payload,
9066                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
9067                data_size);
9068         if (seq)
9069                 cfg->payload_seq = *seq;
9070         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
9071         cfg->wake_len = wake_size;
9072         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
9073         memcpy((void *)cfg->wake_data,
9074                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
9075                wake_size);
9076         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
9077                          data_size + wake_size;
9078         memcpy((void *)cfg->wake_mask,
9079                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
9080                wake_mask_size);
9081         if (tok) {
9082                 cfg->tokens_size = tokens_size;
9083                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
9084         }
9085
9086         trig->tcp = cfg;
9087
9088         return 0;
9089 }
9090
9091 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
9092                                    const struct wiphy_wowlan_support *wowlan,
9093                                    struct nlattr *attr,
9094                                    struct cfg80211_wowlan *trig)
9095 {
9096         struct nlattr **tb;
9097         int err;
9098
9099         tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL);
9100         if (!tb)
9101                 return -ENOMEM;
9102
9103         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
9104                 err = -EOPNOTSUPP;
9105                 goto out;
9106         }
9107
9108         err = nla_parse(tb, NL80211_ATTR_MAX,
9109                         nla_data(attr), nla_len(attr),
9110                         nl80211_policy);
9111         if (err)
9112                 goto out;
9113
9114         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb);
9115         err = PTR_ERR_OR_ZERO(trig->nd_config);
9116         if (err)
9117                 trig->nd_config = NULL;
9118
9119 out:
9120         kfree(tb);
9121         return err;
9122 }
9123
9124 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
9125 {
9126         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9127         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
9128         struct cfg80211_wowlan new_triggers = {};
9129         struct cfg80211_wowlan *ntrig;
9130         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
9131         int err, i;
9132         bool prev_enabled = rdev->wiphy.wowlan_config;
9133         bool regular = false;
9134
9135         if (!wowlan)
9136                 return -EOPNOTSUPP;
9137
9138         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
9139                 cfg80211_rdev_free_wowlan(rdev);
9140                 rdev->wiphy.wowlan_config = NULL;
9141                 goto set_wakeup;
9142         }
9143
9144         err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG,
9145                         nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9146                         nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]),
9147                         nl80211_wowlan_policy);
9148         if (err)
9149                 return err;
9150
9151         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
9152                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
9153                         return -EINVAL;
9154                 new_triggers.any = true;
9155         }
9156
9157         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
9158                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
9159                         return -EINVAL;
9160                 new_triggers.disconnect = true;
9161                 regular = true;
9162         }
9163
9164         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
9165                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
9166                         return -EINVAL;
9167                 new_triggers.magic_pkt = true;
9168                 regular = true;
9169         }
9170
9171         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
9172                 return -EINVAL;
9173
9174         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
9175                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
9176                         return -EINVAL;
9177                 new_triggers.gtk_rekey_failure = true;
9178                 regular = true;
9179         }
9180
9181         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
9182                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
9183                         return -EINVAL;
9184                 new_triggers.eap_identity_req = true;
9185                 regular = true;
9186         }
9187
9188         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
9189                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
9190                         return -EINVAL;
9191                 new_triggers.four_way_handshake = true;
9192                 regular = true;
9193         }
9194
9195         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
9196                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
9197                         return -EINVAL;
9198                 new_triggers.rfkill_release = true;
9199                 regular = true;
9200         }
9201
9202         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
9203                 struct nlattr *pat;
9204                 int n_patterns = 0;
9205                 int rem, pat_len, mask_len, pkt_offset;
9206                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9207
9208                 regular = true;
9209
9210                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9211                                     rem)
9212                         n_patterns++;
9213                 if (n_patterns > wowlan->n_patterns)
9214                         return -EINVAL;
9215
9216                 new_triggers.patterns = kcalloc(n_patterns,
9217                                                 sizeof(new_triggers.patterns[0]),
9218                                                 GFP_KERNEL);
9219                 if (!new_triggers.patterns)
9220                         return -ENOMEM;
9221
9222                 new_triggers.n_patterns = n_patterns;
9223                 i = 0;
9224
9225                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
9226                                     rem) {
9227                         u8 *mask_pat;
9228
9229                         nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9230                                   nla_len(pat), NULL);
9231                         err = -EINVAL;
9232                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
9233                             !pat_tb[NL80211_PKTPAT_PATTERN])
9234                                 goto error;
9235                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9236                         mask_len = DIV_ROUND_UP(pat_len, 8);
9237                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9238                                 goto error;
9239                         if (pat_len > wowlan->pattern_max_len ||
9240                             pat_len < wowlan->pattern_min_len)
9241                                 goto error;
9242
9243                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
9244                                 pkt_offset = 0;
9245                         else
9246                                 pkt_offset = nla_get_u32(
9247                                         pat_tb[NL80211_PKTPAT_OFFSET]);
9248                         if (pkt_offset > wowlan->max_pkt_offset)
9249                                 goto error;
9250                         new_triggers.patterns[i].pkt_offset = pkt_offset;
9251
9252                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9253                         if (!mask_pat) {
9254                                 err = -ENOMEM;
9255                                 goto error;
9256                         }
9257                         new_triggers.patterns[i].mask = mask_pat;
9258                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9259                                mask_len);
9260                         mask_pat += mask_len;
9261                         new_triggers.patterns[i].pattern = mask_pat;
9262                         new_triggers.patterns[i].pattern_len = pat_len;
9263                         memcpy(mask_pat,
9264                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9265                                pat_len);
9266                         i++;
9267                 }
9268         }
9269
9270         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
9271                 regular = true;
9272                 err = nl80211_parse_wowlan_tcp(
9273                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
9274                         &new_triggers);
9275                 if (err)
9276                         goto error;
9277         }
9278
9279         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
9280                 regular = true;
9281                 err = nl80211_parse_wowlan_nd(
9282                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
9283                         &new_triggers);
9284                 if (err)
9285                         goto error;
9286         }
9287
9288         /* The 'any' trigger means the device continues operating more or less
9289          * as in its normal operation mode and wakes up the host on most of the
9290          * normal interrupts (like packet RX, ...)
9291          * It therefore makes little sense to combine with the more constrained
9292          * wakeup trigger modes.
9293          */
9294         if (new_triggers.any && regular) {
9295                 err = -EINVAL;
9296                 goto error;
9297         }
9298
9299         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
9300         if (!ntrig) {
9301                 err = -ENOMEM;
9302                 goto error;
9303         }
9304         cfg80211_rdev_free_wowlan(rdev);
9305         rdev->wiphy.wowlan_config = ntrig;
9306
9307  set_wakeup:
9308         if (rdev->ops->set_wakeup &&
9309             prev_enabled != !!rdev->wiphy.wowlan_config)
9310                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
9311
9312         return 0;
9313  error:
9314         for (i = 0; i < new_triggers.n_patterns; i++)
9315                 kfree(new_triggers.patterns[i].mask);
9316         kfree(new_triggers.patterns);
9317         if (new_triggers.tcp && new_triggers.tcp->sock)
9318                 sock_release(new_triggers.tcp->sock);
9319         kfree(new_triggers.tcp);
9320         return err;
9321 }
9322 #endif
9323
9324 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
9325                                        struct cfg80211_registered_device *rdev)
9326 {
9327         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
9328         int i, j, pat_len;
9329         struct cfg80211_coalesce_rules *rule;
9330
9331         if (!rdev->coalesce->n_rules)
9332                 return 0;
9333
9334         nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE);
9335         if (!nl_rules)
9336                 return -ENOBUFS;
9337
9338         for (i = 0; i < rdev->coalesce->n_rules; i++) {
9339                 nl_rule = nla_nest_start(msg, i + 1);
9340                 if (!nl_rule)
9341                         return -ENOBUFS;
9342
9343                 rule = &rdev->coalesce->rules[i];
9344                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
9345                                 rule->delay))
9346                         return -ENOBUFS;
9347
9348                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
9349                                 rule->condition))
9350                         return -ENOBUFS;
9351
9352                 nl_pats = nla_nest_start(msg,
9353                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
9354                 if (!nl_pats)
9355                         return -ENOBUFS;
9356
9357                 for (j = 0; j < rule->n_patterns; j++) {
9358                         nl_pat = nla_nest_start(msg, j + 1);
9359                         if (!nl_pat)
9360                                 return -ENOBUFS;
9361                         pat_len = rule->patterns[j].pattern_len;
9362                         if (nla_put(msg, NL80211_PKTPAT_MASK,
9363                                     DIV_ROUND_UP(pat_len, 8),
9364                                     rule->patterns[j].mask) ||
9365                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
9366                                     rule->patterns[j].pattern) ||
9367                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
9368                                         rule->patterns[j].pkt_offset))
9369                                 return -ENOBUFS;
9370                         nla_nest_end(msg, nl_pat);
9371                 }
9372                 nla_nest_end(msg, nl_pats);
9373                 nla_nest_end(msg, nl_rule);
9374         }
9375         nla_nest_end(msg, nl_rules);
9376
9377         return 0;
9378 }
9379
9380 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
9381 {
9382         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9383         struct sk_buff *msg;
9384         void *hdr;
9385
9386         if (!rdev->wiphy.coalesce)
9387                 return -EOPNOTSUPP;
9388
9389         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9390         if (!msg)
9391                 return -ENOMEM;
9392
9393         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9394                              NL80211_CMD_GET_COALESCE);
9395         if (!hdr)
9396                 goto nla_put_failure;
9397
9398         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
9399                 goto nla_put_failure;
9400
9401         genlmsg_end(msg, hdr);
9402         return genlmsg_reply(msg, info);
9403
9404 nla_put_failure:
9405         nlmsg_free(msg);
9406         return -ENOBUFS;
9407 }
9408
9409 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
9410 {
9411         struct cfg80211_coalesce *coalesce = rdev->coalesce;
9412         int i, j;
9413         struct cfg80211_coalesce_rules *rule;
9414
9415         if (!coalesce)
9416                 return;
9417
9418         for (i = 0; i < coalesce->n_rules; i++) {
9419                 rule = &coalesce->rules[i];
9420                 for (j = 0; j < rule->n_patterns; j++)
9421                         kfree(rule->patterns[j].mask);
9422                 kfree(rule->patterns);
9423         }
9424         kfree(coalesce->rules);
9425         kfree(coalesce);
9426         rdev->coalesce = NULL;
9427 }
9428
9429 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
9430                                        struct nlattr *rule,
9431                                        struct cfg80211_coalesce_rules *new_rule)
9432 {
9433         int err, i;
9434         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9435         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
9436         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
9437         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
9438
9439         err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule),
9440                         nla_len(rule), nl80211_coalesce_policy);
9441         if (err)
9442                 return err;
9443
9444         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
9445                 new_rule->delay =
9446                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
9447         if (new_rule->delay > coalesce->max_delay)
9448                 return -EINVAL;
9449
9450         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
9451                 new_rule->condition =
9452                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
9453         if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH &&
9454             new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH)
9455                 return -EINVAL;
9456
9457         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
9458                 return -EINVAL;
9459
9460         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9461                             rem)
9462                 n_patterns++;
9463         if (n_patterns > coalesce->n_patterns)
9464                 return -EINVAL;
9465
9466         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
9467                                      GFP_KERNEL);
9468         if (!new_rule->patterns)
9469                 return -ENOMEM;
9470
9471         new_rule->n_patterns = n_patterns;
9472         i = 0;
9473
9474         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
9475                             rem) {
9476                 u8 *mask_pat;
9477
9478                 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat),
9479                           nla_len(pat), NULL);
9480                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
9481                     !pat_tb[NL80211_PKTPAT_PATTERN])
9482                         return -EINVAL;
9483                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
9484                 mask_len = DIV_ROUND_UP(pat_len, 8);
9485                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
9486                         return -EINVAL;
9487                 if (pat_len > coalesce->pattern_max_len ||
9488                     pat_len < coalesce->pattern_min_len)
9489                         return -EINVAL;
9490
9491                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
9492                         pkt_offset = 0;
9493                 else
9494                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
9495                 if (pkt_offset > coalesce->max_pkt_offset)
9496                         return -EINVAL;
9497                 new_rule->patterns[i].pkt_offset = pkt_offset;
9498
9499                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
9500                 if (!mask_pat)
9501                         return -ENOMEM;
9502
9503                 new_rule->patterns[i].mask = mask_pat;
9504                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
9505                        mask_len);
9506
9507                 mask_pat += mask_len;
9508                 new_rule->patterns[i].pattern = mask_pat;
9509                 new_rule->patterns[i].pattern_len = pat_len;
9510                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
9511                        pat_len);
9512                 i++;
9513         }
9514
9515         return 0;
9516 }
9517
9518 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
9519 {
9520         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9521         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
9522         struct cfg80211_coalesce new_coalesce = {};
9523         struct cfg80211_coalesce *n_coalesce;
9524         int err, rem_rule, n_rules = 0, i, j;
9525         struct nlattr *rule;
9526         struct cfg80211_coalesce_rules *tmp_rule;
9527
9528         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
9529                 return -EOPNOTSUPP;
9530
9531         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
9532                 cfg80211_rdev_free_coalesce(rdev);
9533                 rdev->ops->set_coalesce(&rdev->wiphy, NULL);
9534                 return 0;
9535         }
9536
9537         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9538                             rem_rule)
9539                 n_rules++;
9540         if (n_rules > coalesce->n_rules)
9541                 return -EINVAL;
9542
9543         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
9544                                      GFP_KERNEL);
9545         if (!new_coalesce.rules)
9546                 return -ENOMEM;
9547
9548         new_coalesce.n_rules = n_rules;
9549         i = 0;
9550
9551         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
9552                             rem_rule) {
9553                 err = nl80211_parse_coalesce_rule(rdev, rule,
9554                                                   &new_coalesce.rules[i]);
9555                 if (err)
9556                         goto error;
9557
9558                 i++;
9559         }
9560
9561         err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce);
9562         if (err)
9563                 goto error;
9564
9565         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
9566         if (!n_coalesce) {
9567                 err = -ENOMEM;
9568                 goto error;
9569         }
9570         cfg80211_rdev_free_coalesce(rdev);
9571         rdev->coalesce = n_coalesce;
9572
9573         return 0;
9574 error:
9575         for (i = 0; i < new_coalesce.n_rules; i++) {
9576                 tmp_rule = &new_coalesce.rules[i];
9577                 for (j = 0; j < tmp_rule->n_patterns; j++)
9578                         kfree(tmp_rule->patterns[j].mask);
9579                 kfree(tmp_rule->patterns);
9580         }
9581         kfree(new_coalesce.rules);
9582
9583         return err;
9584 }
9585
9586 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
9587 {
9588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9589         struct net_device *dev = info->user_ptr[1];
9590         struct wireless_dev *wdev = dev->ieee80211_ptr;
9591         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
9592         struct cfg80211_gtk_rekey_data rekey_data;
9593         int err;
9594
9595         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
9596                 return -EINVAL;
9597
9598         err = nla_parse(tb, MAX_NL80211_REKEY_DATA,
9599                         nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]),
9600                         nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]),
9601                         nl80211_rekey_policy);
9602         if (err)
9603                 return err;
9604
9605         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
9606                 return -ERANGE;
9607         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
9608                 return -ERANGE;
9609         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
9610                 return -ERANGE;
9611
9612         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
9613         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
9614         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
9615
9616         wdev_lock(wdev);
9617         if (!wdev->current_bss) {
9618                 err = -ENOTCONN;
9619                 goto out;
9620         }
9621
9622         if (!rdev->ops->set_rekey_data) {
9623                 err = -EOPNOTSUPP;
9624                 goto out;
9625         }
9626
9627         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
9628  out:
9629         wdev_unlock(wdev);
9630         return err;
9631 }
9632
9633 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
9634                                              struct genl_info *info)
9635 {
9636         struct net_device *dev = info->user_ptr[1];
9637         struct wireless_dev *wdev = dev->ieee80211_ptr;
9638
9639         if (wdev->iftype != NL80211_IFTYPE_AP &&
9640             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9641                 return -EINVAL;
9642
9643         if (wdev->ap_unexpected_nlportid)
9644                 return -EBUSY;
9645
9646         wdev->ap_unexpected_nlportid = info->snd_portid;
9647         return 0;
9648 }
9649
9650 static int nl80211_probe_client(struct sk_buff *skb,
9651                                 struct genl_info *info)
9652 {
9653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9654         struct net_device *dev = info->user_ptr[1];
9655         struct wireless_dev *wdev = dev->ieee80211_ptr;
9656         struct sk_buff *msg;
9657         void *hdr;
9658         const u8 *addr;
9659         u64 cookie;
9660         int err;
9661
9662         if (wdev->iftype != NL80211_IFTYPE_AP &&
9663             wdev->iftype != NL80211_IFTYPE_P2P_GO)
9664                 return -EOPNOTSUPP;
9665
9666         if (!info->attrs[NL80211_ATTR_MAC])
9667                 return -EINVAL;
9668
9669         if (!rdev->ops->probe_client)
9670                 return -EOPNOTSUPP;
9671
9672         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9673         if (!msg)
9674                 return -ENOMEM;
9675
9676         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9677                              NL80211_CMD_PROBE_CLIENT);
9678         if (!hdr) {
9679                 err = -ENOBUFS;
9680                 goto free_msg;
9681         }
9682
9683         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
9684
9685         err = rdev_probe_client(rdev, dev, addr, &cookie);
9686         if (err)
9687                 goto free_msg;
9688
9689         if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
9690                 goto nla_put_failure;
9691
9692         genlmsg_end(msg, hdr);
9693
9694         return genlmsg_reply(msg, info);
9695
9696  nla_put_failure:
9697         err = -ENOBUFS;
9698  free_msg:
9699         nlmsg_free(msg);
9700         return err;
9701 }
9702
9703 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
9704 {
9705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9706         struct cfg80211_beacon_registration *reg, *nreg;
9707         int rv;
9708
9709         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
9710                 return -EOPNOTSUPP;
9711
9712         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
9713         if (!nreg)
9714                 return -ENOMEM;
9715
9716         /* First, check if already registered. */
9717         spin_lock_bh(&rdev->beacon_registrations_lock);
9718         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
9719                 if (reg->nlportid == info->snd_portid) {
9720                         rv = -EALREADY;
9721                         goto out_err;
9722                 }
9723         }
9724         /* Add it to the list */
9725         nreg->nlportid = info->snd_portid;
9726         list_add(&nreg->list, &rdev->beacon_registrations);
9727
9728         spin_unlock_bh(&rdev->beacon_registrations_lock);
9729
9730         return 0;
9731 out_err:
9732         spin_unlock_bh(&rdev->beacon_registrations_lock);
9733         kfree(nreg);
9734         return rv;
9735 }
9736
9737 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
9738 {
9739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9740         struct wireless_dev *wdev = info->user_ptr[1];
9741         int err;
9742
9743         if (!rdev->ops->start_p2p_device)
9744                 return -EOPNOTSUPP;
9745
9746         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9747                 return -EOPNOTSUPP;
9748
9749         if (wdev->p2p_started)
9750                 return 0;
9751
9752         if (rfkill_blocked(rdev->rfkill))
9753                 return -ERFKILL;
9754
9755         err = rdev_start_p2p_device(rdev, wdev);
9756         if (err)
9757                 return err;
9758
9759         wdev->p2p_started = true;
9760         rdev->opencount++;
9761
9762         return 0;
9763 }
9764
9765 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
9766 {
9767         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9768         struct wireless_dev *wdev = info->user_ptr[1];
9769
9770         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
9771                 return -EOPNOTSUPP;
9772
9773         if (!rdev->ops->stop_p2p_device)
9774                 return -EOPNOTSUPP;
9775
9776         cfg80211_stop_p2p_device(rdev, wdev);
9777
9778         return 0;
9779 }
9780
9781 static int nl80211_get_protocol_features(struct sk_buff *skb,
9782                                          struct genl_info *info)
9783 {
9784         void *hdr;
9785         struct sk_buff *msg;
9786
9787         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
9788         if (!msg)
9789                 return -ENOMEM;
9790
9791         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
9792                              NL80211_CMD_GET_PROTOCOL_FEATURES);
9793         if (!hdr)
9794                 goto nla_put_failure;
9795
9796         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
9797                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
9798                 goto nla_put_failure;
9799
9800         genlmsg_end(msg, hdr);
9801         return genlmsg_reply(msg, info);
9802
9803  nla_put_failure:
9804         kfree_skb(msg);
9805         return -ENOBUFS;
9806 }
9807
9808 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
9809 {
9810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9811         struct cfg80211_update_ft_ies_params ft_params;
9812         struct net_device *dev = info->user_ptr[1];
9813
9814         if (!rdev->ops->update_ft_ies)
9815                 return -EOPNOTSUPP;
9816
9817         if (!info->attrs[NL80211_ATTR_MDID] ||
9818             !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
9819                 return -EINVAL;
9820
9821         memset(&ft_params, 0, sizeof(ft_params));
9822         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
9823         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9824         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9825
9826         return rdev_update_ft_ies(rdev, dev, &ft_params);
9827 }
9828
9829 static int nl80211_crit_protocol_start(struct sk_buff *skb,
9830                                        struct genl_info *info)
9831 {
9832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9833         struct wireless_dev *wdev = info->user_ptr[1];
9834         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
9835         u16 duration;
9836         int ret;
9837
9838         if (!rdev->ops->crit_proto_start)
9839                 return -EOPNOTSUPP;
9840
9841         if (WARN_ON(!rdev->ops->crit_proto_stop))
9842                 return -EINVAL;
9843
9844         if (rdev->crit_proto_nlportid)
9845                 return -EBUSY;
9846
9847         /* determine protocol if provided */
9848         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
9849                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
9850
9851         if (proto >= NUM_NL80211_CRIT_PROTO)
9852                 return -EINVAL;
9853
9854         /* timeout must be provided */
9855         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
9856                 return -EINVAL;
9857
9858         duration =
9859                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
9860
9861         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
9862                 return -ERANGE;
9863
9864         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
9865         if (!ret)
9866                 rdev->crit_proto_nlportid = info->snd_portid;
9867
9868         return ret;
9869 }
9870
9871 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
9872                                       struct genl_info *info)
9873 {
9874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9875         struct wireless_dev *wdev = info->user_ptr[1];
9876
9877         if (!rdev->ops->crit_proto_stop)
9878                 return -EOPNOTSUPP;
9879
9880         if (rdev->crit_proto_nlportid) {
9881                 rdev->crit_proto_nlportid = 0;
9882                 rdev_crit_proto_stop(rdev, wdev);
9883         }
9884         return 0;
9885 }
9886
9887 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
9888 {
9889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9890         struct wireless_dev *wdev =
9891                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9892         int i, err;
9893         u32 vid, subcmd;
9894
9895         if (!rdev->wiphy.vendor_commands)
9896                 return -EOPNOTSUPP;
9897
9898         if (IS_ERR(wdev)) {
9899                 err = PTR_ERR(wdev);
9900                 if (err != -EINVAL)
9901                         return err;
9902                 wdev = NULL;
9903         } else if (wdev->wiphy != &rdev->wiphy) {
9904                 return -EINVAL;
9905         }
9906
9907         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
9908             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
9909                 return -EINVAL;
9910
9911         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
9912         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
9913         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
9914                 const struct wiphy_vendor_command *vcmd;
9915                 void *data = NULL;
9916                 int len = 0;
9917
9918                 vcmd = &rdev->wiphy.vendor_commands[i];
9919
9920                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
9921                         continue;
9922
9923                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
9924                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
9925                         if (!wdev)
9926                                 return -EINVAL;
9927                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
9928                             !wdev->netdev)
9929                                 return -EINVAL;
9930
9931                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
9932                                 if (wdev->netdev &&
9933                                     !netif_running(wdev->netdev))
9934                                         return -ENETDOWN;
9935                                 if (!wdev->netdev && !wdev->p2p_started)
9936                                         return -ENETDOWN;
9937                         }
9938                 } else {
9939                         wdev = NULL;
9940                 }
9941
9942                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
9943                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9944                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
9945                 }
9946
9947                 rdev->cur_cmd_info = info;
9948                 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev,
9949                                                           data, len);
9950                 rdev->cur_cmd_info = NULL;
9951                 return err;
9952         }
9953
9954         return -EOPNOTSUPP;
9955 }
9956
9957 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
9958                                            enum nl80211_commands cmd,
9959                                            enum nl80211_attrs attr,
9960                                            int approxlen)
9961 {
9962         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9963
9964         if (WARN_ON(!rdev->cur_cmd_info))
9965                 return NULL;
9966
9967         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
9968                                            rdev->cur_cmd_info->snd_portid,
9969                                            rdev->cur_cmd_info->snd_seq,
9970                                            cmd, attr, NULL, GFP_KERNEL);
9971 }
9972 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
9973
9974 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
9975 {
9976         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9977         void *hdr = ((void **)skb->cb)[1];
9978         struct nlattr *data = ((void **)skb->cb)[2];
9979
9980         /* clear CB data for netlink core to own from now on */
9981         memset(skb->cb, 0, sizeof(skb->cb));
9982
9983         if (WARN_ON(!rdev->cur_cmd_info)) {
9984                 kfree_skb(skb);
9985                 return -EINVAL;
9986         }
9987
9988         nla_nest_end(skb, data);
9989         genlmsg_end(skb, hdr);
9990         return genlmsg_reply(skb, rdev->cur_cmd_info);
9991 }
9992 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
9993
9994
9995 static int nl80211_set_qos_map(struct sk_buff *skb,
9996                                struct genl_info *info)
9997 {
9998         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9999         struct cfg80211_qos_map *qos_map = NULL;
10000         struct net_device *dev = info->user_ptr[1];
10001         u8 *pos, len, num_des, des_len, des;
10002         int ret;
10003
10004         if (!rdev->ops->set_qos_map)
10005                 return -EOPNOTSUPP;
10006
10007         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
10008                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
10009                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
10010
10011                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
10012                     len > IEEE80211_QOS_MAP_LEN_MAX)
10013                         return -EINVAL;
10014
10015                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
10016                 if (!qos_map)
10017                         return -ENOMEM;
10018
10019                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
10020                 if (num_des) {
10021                         des_len = num_des *
10022                                 sizeof(struct cfg80211_dscp_exception);
10023                         memcpy(qos_map->dscp_exception, pos, des_len);
10024                         qos_map->num_des = num_des;
10025                         for (des = 0; des < num_des; des++) {
10026                                 if (qos_map->dscp_exception[des].up > 7) {
10027                                         kfree(qos_map);
10028                                         return -EINVAL;
10029                                 }
10030                         }
10031                         pos += des_len;
10032                 }
10033                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
10034         }
10035
10036         wdev_lock(dev->ieee80211_ptr);
10037         ret = nl80211_key_allowed(dev->ieee80211_ptr);
10038         if (!ret)
10039                 ret = rdev_set_qos_map(rdev, dev, qos_map);
10040         wdev_unlock(dev->ieee80211_ptr);
10041
10042         kfree(qos_map);
10043         return ret;
10044 }
10045
10046 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
10047 {
10048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10049         struct net_device *dev = info->user_ptr[1];
10050         struct wireless_dev *wdev = dev->ieee80211_ptr;
10051         const u8 *peer;
10052         u8 tsid, up;
10053         u16 admitted_time = 0;
10054         int err;
10055
10056         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
10057                 return -EOPNOTSUPP;
10058
10059         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
10060             !info->attrs[NL80211_ATTR_USER_PRIO])
10061                 return -EINVAL;
10062
10063         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10064         if (tsid >= IEEE80211_NUM_TIDS)
10065                 return -EINVAL;
10066
10067         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
10068         if (up >= IEEE80211_NUM_UPS)
10069                 return -EINVAL;
10070
10071         /* WMM uses TIDs 0-7 even for TSPEC */
10072         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
10073                 /* TODO: handle 802.11 TSPEC/admission control
10074                  * need more attributes for that (e.g. BA session requirement);
10075                  * change the WMM adminssion test above to allow both then
10076                  */
10077                 return -EINVAL;
10078         }
10079
10080         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10081
10082         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
10083                 admitted_time =
10084                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
10085                 if (!admitted_time)
10086                         return -EINVAL;
10087         }
10088
10089         wdev_lock(wdev);
10090         switch (wdev->iftype) {
10091         case NL80211_IFTYPE_STATION:
10092         case NL80211_IFTYPE_P2P_CLIENT:
10093                 if (wdev->current_bss)
10094                         break;
10095                 err = -ENOTCONN;
10096                 goto out;
10097         default:
10098                 err = -EOPNOTSUPP;
10099                 goto out;
10100         }
10101
10102         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
10103
10104  out:
10105         wdev_unlock(wdev);
10106         return err;
10107 }
10108
10109 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
10110 {
10111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10112         struct net_device *dev = info->user_ptr[1];
10113         struct wireless_dev *wdev = dev->ieee80211_ptr;
10114         const u8 *peer;
10115         u8 tsid;
10116         int err;
10117
10118         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
10119                 return -EINVAL;
10120
10121         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
10122         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10123
10124         wdev_lock(wdev);
10125         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
10126         wdev_unlock(wdev);
10127
10128         return err;
10129 }
10130
10131 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
10132                                        struct genl_info *info)
10133 {
10134         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10135         struct net_device *dev = info->user_ptr[1];
10136         struct wireless_dev *wdev = dev->ieee80211_ptr;
10137         struct cfg80211_chan_def chandef = {};
10138         const u8 *addr;
10139         u8 oper_class;
10140         int err;
10141
10142         if (!rdev->ops->tdls_channel_switch ||
10143             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10144                 return -EOPNOTSUPP;
10145
10146         switch (dev->ieee80211_ptr->iftype) {
10147         case NL80211_IFTYPE_STATION:
10148         case NL80211_IFTYPE_P2P_CLIENT:
10149                 break;
10150         default:
10151                 return -EOPNOTSUPP;
10152         }
10153
10154         if (!info->attrs[NL80211_ATTR_MAC] ||
10155             !info->attrs[NL80211_ATTR_OPER_CLASS])
10156                 return -EINVAL;
10157
10158         err = nl80211_parse_chandef(rdev, info, &chandef);
10159         if (err)
10160                 return err;
10161
10162         /*
10163          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
10164          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
10165          * specification is not defined for them.
10166          */
10167         if (chandef.chan->band == IEEE80211_BAND_2GHZ &&
10168             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
10169             chandef.width != NL80211_CHAN_WIDTH_20)
10170                 return -EINVAL;
10171
10172         /* we will be active on the TDLS link */
10173         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype))
10174                 return -EINVAL;
10175
10176         /* don't allow switching to DFS channels */
10177         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
10178                 return -EINVAL;
10179
10180         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10181         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
10182
10183         wdev_lock(wdev);
10184         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
10185         wdev_unlock(wdev);
10186
10187         return err;
10188 }
10189
10190 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
10191                                               struct genl_info *info)
10192 {
10193         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10194         struct net_device *dev = info->user_ptr[1];
10195         struct wireless_dev *wdev = dev->ieee80211_ptr;
10196         const u8 *addr;
10197
10198         if (!rdev->ops->tdls_channel_switch ||
10199             !rdev->ops->tdls_cancel_channel_switch ||
10200             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
10201                 return -EOPNOTSUPP;
10202
10203         switch (dev->ieee80211_ptr->iftype) {
10204         case NL80211_IFTYPE_STATION:
10205         case NL80211_IFTYPE_P2P_CLIENT:
10206                 break;
10207         default:
10208                 return -EOPNOTSUPP;
10209         }
10210
10211         if (!info->attrs[NL80211_ATTR_MAC])
10212                 return -EINVAL;
10213
10214         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
10215
10216         wdev_lock(wdev);
10217         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
10218         wdev_unlock(wdev);
10219
10220         return 0;
10221 }
10222
10223 #define NL80211_FLAG_NEED_WIPHY         0x01
10224 #define NL80211_FLAG_NEED_NETDEV        0x02
10225 #define NL80211_FLAG_NEED_RTNL          0x04
10226 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
10227 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
10228                                          NL80211_FLAG_CHECK_NETDEV_UP)
10229 #define NL80211_FLAG_NEED_WDEV          0x10
10230 /* If a netdev is associated, it must be UP, P2P must be started */
10231 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
10232                                          NL80211_FLAG_CHECK_NETDEV_UP)
10233 #define NL80211_FLAG_CLEAR_SKB          0x20
10234
10235 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
10236                             struct genl_info *info)
10237 {
10238         struct cfg80211_registered_device *rdev;
10239         struct wireless_dev *wdev;
10240         struct net_device *dev;
10241         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
10242
10243         if (rtnl)
10244                 rtnl_lock();
10245
10246         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
10247                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
10248                 if (IS_ERR(rdev)) {
10249                         if (rtnl)
10250                                 rtnl_unlock();
10251                         return PTR_ERR(rdev);
10252                 }
10253                 info->user_ptr[0] = rdev;
10254         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
10255                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10256                 ASSERT_RTNL();
10257
10258                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
10259                                                   info->attrs);
10260                 if (IS_ERR(wdev)) {
10261                         if (rtnl)
10262                                 rtnl_unlock();
10263                         return PTR_ERR(wdev);
10264                 }
10265
10266                 dev = wdev->netdev;
10267                 rdev = wiphy_to_rdev(wdev->wiphy);
10268
10269                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
10270                         if (!dev) {
10271                                 if (rtnl)
10272                                         rtnl_unlock();
10273                                 return -EINVAL;
10274                         }
10275
10276                         info->user_ptr[1] = dev;
10277                 } else {
10278                         info->user_ptr[1] = wdev;
10279                 }
10280
10281                 if (dev) {
10282                         if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
10283                             !netif_running(dev)) {
10284                                 if (rtnl)
10285                                         rtnl_unlock();
10286                                 return -ENETDOWN;
10287                         }
10288
10289                         dev_hold(dev);
10290                 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) {
10291                         if (!wdev->p2p_started) {
10292                                 if (rtnl)
10293                                         rtnl_unlock();
10294                                 return -ENETDOWN;
10295                         }
10296                 }
10297
10298                 info->user_ptr[0] = rdev;
10299         }
10300
10301         return 0;
10302 }
10303
10304 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
10305                               struct genl_info *info)
10306 {
10307         if (info->user_ptr[1]) {
10308                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
10309                         struct wireless_dev *wdev = info->user_ptr[1];
10310
10311                         if (wdev->netdev)
10312                                 dev_put(wdev->netdev);
10313                 } else {
10314                         dev_put(info->user_ptr[1]);
10315                 }
10316         }
10317
10318         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
10319                 rtnl_unlock();
10320
10321         /* If needed, clear the netlink message payload from the SKB
10322          * as it might contain key data that shouldn't stick around on
10323          * the heap after the SKB is freed. The netlink message header
10324          * is still needed for further processing, so leave it intact.
10325          */
10326         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
10327                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
10328
10329                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
10330         }
10331 }
10332
10333 static const struct genl_ops nl80211_ops[] = {
10334         {
10335                 .cmd = NL80211_CMD_GET_WIPHY,
10336                 .doit = nl80211_get_wiphy,
10337                 .dumpit = nl80211_dump_wiphy,
10338                 .done = nl80211_dump_wiphy_done,
10339                 .policy = nl80211_policy,
10340                 /* can be retrieved by unprivileged users */
10341                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10342                                   NL80211_FLAG_NEED_RTNL,
10343         },
10344         {
10345                 .cmd = NL80211_CMD_SET_WIPHY,
10346                 .doit = nl80211_set_wiphy,
10347                 .policy = nl80211_policy,
10348                 .flags = GENL_ADMIN_PERM,
10349                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10350         },
10351         {
10352                 .cmd = NL80211_CMD_GET_INTERFACE,
10353                 .doit = nl80211_get_interface,
10354                 .dumpit = nl80211_dump_interface,
10355                 .policy = nl80211_policy,
10356                 /* can be retrieved by unprivileged users */
10357                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10358                                   NL80211_FLAG_NEED_RTNL,
10359         },
10360         {
10361                 .cmd = NL80211_CMD_SET_INTERFACE,
10362                 .doit = nl80211_set_interface,
10363                 .policy = nl80211_policy,
10364                 .flags = GENL_ADMIN_PERM,
10365                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10366                                   NL80211_FLAG_NEED_RTNL,
10367         },
10368         {
10369                 .cmd = NL80211_CMD_NEW_INTERFACE,
10370                 .doit = nl80211_new_interface,
10371                 .policy = nl80211_policy,
10372                 .flags = GENL_ADMIN_PERM,
10373                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10374                                   NL80211_FLAG_NEED_RTNL,
10375         },
10376         {
10377                 .cmd = NL80211_CMD_DEL_INTERFACE,
10378                 .doit = nl80211_del_interface,
10379                 .policy = nl80211_policy,
10380                 .flags = GENL_ADMIN_PERM,
10381                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10382                                   NL80211_FLAG_NEED_RTNL,
10383         },
10384         {
10385                 .cmd = NL80211_CMD_GET_KEY,
10386                 .doit = nl80211_get_key,
10387                 .policy = nl80211_policy,
10388                 .flags = GENL_ADMIN_PERM,
10389                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10390                                   NL80211_FLAG_NEED_RTNL,
10391         },
10392         {
10393                 .cmd = NL80211_CMD_SET_KEY,
10394                 .doit = nl80211_set_key,
10395                 .policy = nl80211_policy,
10396                 .flags = GENL_ADMIN_PERM,
10397                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10398                                   NL80211_FLAG_NEED_RTNL |
10399                                   NL80211_FLAG_CLEAR_SKB,
10400         },
10401         {
10402                 .cmd = NL80211_CMD_NEW_KEY,
10403                 .doit = nl80211_new_key,
10404                 .policy = nl80211_policy,
10405                 .flags = GENL_ADMIN_PERM,
10406                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10407                                   NL80211_FLAG_NEED_RTNL |
10408                                   NL80211_FLAG_CLEAR_SKB,
10409         },
10410         {
10411                 .cmd = NL80211_CMD_DEL_KEY,
10412                 .doit = nl80211_del_key,
10413                 .policy = nl80211_policy,
10414                 .flags = GENL_ADMIN_PERM,
10415                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10416                                   NL80211_FLAG_NEED_RTNL,
10417         },
10418         {
10419                 .cmd = NL80211_CMD_SET_BEACON,
10420                 .policy = nl80211_policy,
10421                 .flags = GENL_ADMIN_PERM,
10422                 .doit = nl80211_set_beacon,
10423                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10424                                   NL80211_FLAG_NEED_RTNL,
10425         },
10426         {
10427                 .cmd = NL80211_CMD_START_AP,
10428                 .policy = nl80211_policy,
10429                 .flags = GENL_ADMIN_PERM,
10430                 .doit = nl80211_start_ap,
10431                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10432                                   NL80211_FLAG_NEED_RTNL,
10433         },
10434         {
10435                 .cmd = NL80211_CMD_STOP_AP,
10436                 .policy = nl80211_policy,
10437                 .flags = GENL_ADMIN_PERM,
10438                 .doit = nl80211_stop_ap,
10439                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10440                                   NL80211_FLAG_NEED_RTNL,
10441         },
10442         {
10443                 .cmd = NL80211_CMD_GET_STATION,
10444                 .doit = nl80211_get_station,
10445                 .dumpit = nl80211_dump_station,
10446                 .policy = nl80211_policy,
10447                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10448                                   NL80211_FLAG_NEED_RTNL,
10449         },
10450         {
10451                 .cmd = NL80211_CMD_SET_STATION,
10452                 .doit = nl80211_set_station,
10453                 .policy = nl80211_policy,
10454                 .flags = GENL_ADMIN_PERM,
10455                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10456                                   NL80211_FLAG_NEED_RTNL,
10457         },
10458         {
10459                 .cmd = NL80211_CMD_NEW_STATION,
10460                 .doit = nl80211_new_station,
10461                 .policy = nl80211_policy,
10462                 .flags = GENL_ADMIN_PERM,
10463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10464                                   NL80211_FLAG_NEED_RTNL,
10465         },
10466         {
10467                 .cmd = NL80211_CMD_DEL_STATION,
10468                 .doit = nl80211_del_station,
10469                 .policy = nl80211_policy,
10470                 .flags = GENL_ADMIN_PERM,
10471                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10472                                   NL80211_FLAG_NEED_RTNL,
10473         },
10474         {
10475                 .cmd = NL80211_CMD_GET_MPATH,
10476                 .doit = nl80211_get_mpath,
10477                 .dumpit = nl80211_dump_mpath,
10478                 .policy = nl80211_policy,
10479                 .flags = GENL_ADMIN_PERM,
10480                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10481                                   NL80211_FLAG_NEED_RTNL,
10482         },
10483         {
10484                 .cmd = NL80211_CMD_GET_MPP,
10485                 .doit = nl80211_get_mpp,
10486                 .dumpit = nl80211_dump_mpp,
10487                 .policy = nl80211_policy,
10488                 .flags = GENL_ADMIN_PERM,
10489                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10490                                   NL80211_FLAG_NEED_RTNL,
10491         },
10492         {
10493                 .cmd = NL80211_CMD_SET_MPATH,
10494                 .doit = nl80211_set_mpath,
10495                 .policy = nl80211_policy,
10496                 .flags = GENL_ADMIN_PERM,
10497                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10498                                   NL80211_FLAG_NEED_RTNL,
10499         },
10500         {
10501                 .cmd = NL80211_CMD_NEW_MPATH,
10502                 .doit = nl80211_new_mpath,
10503                 .policy = nl80211_policy,
10504                 .flags = GENL_ADMIN_PERM,
10505                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10506                                   NL80211_FLAG_NEED_RTNL,
10507         },
10508         {
10509                 .cmd = NL80211_CMD_DEL_MPATH,
10510                 .doit = nl80211_del_mpath,
10511                 .policy = nl80211_policy,
10512                 .flags = GENL_ADMIN_PERM,
10513                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10514                                   NL80211_FLAG_NEED_RTNL,
10515         },
10516         {
10517                 .cmd = NL80211_CMD_SET_BSS,
10518                 .doit = nl80211_set_bss,
10519                 .policy = nl80211_policy,
10520                 .flags = GENL_ADMIN_PERM,
10521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10522                                   NL80211_FLAG_NEED_RTNL,
10523         },
10524         {
10525                 .cmd = NL80211_CMD_GET_REG,
10526                 .doit = nl80211_get_reg_do,
10527                 .dumpit = nl80211_get_reg_dump,
10528                 .policy = nl80211_policy,
10529                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10530                 /* can be retrieved by unprivileged users */
10531         },
10532         {
10533                 .cmd = NL80211_CMD_SET_REG,
10534                 .doit = nl80211_set_reg,
10535                 .policy = nl80211_policy,
10536                 .flags = GENL_ADMIN_PERM,
10537                 .internal_flags = NL80211_FLAG_NEED_RTNL,
10538         },
10539         {
10540                 .cmd = NL80211_CMD_REQ_SET_REG,
10541                 .doit = nl80211_req_set_reg,
10542                 .policy = nl80211_policy,
10543                 .flags = GENL_ADMIN_PERM,
10544         },
10545         {
10546                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
10547                 .doit = nl80211_get_mesh_config,
10548                 .policy = nl80211_policy,
10549                 /* can be retrieved by unprivileged users */
10550                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10551                                   NL80211_FLAG_NEED_RTNL,
10552         },
10553         {
10554                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
10555                 .doit = nl80211_update_mesh_config,
10556                 .policy = nl80211_policy,
10557                 .flags = GENL_ADMIN_PERM,
10558                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10559                                   NL80211_FLAG_NEED_RTNL,
10560         },
10561         {
10562                 .cmd = NL80211_CMD_TRIGGER_SCAN,
10563                 .doit = nl80211_trigger_scan,
10564                 .policy = nl80211_policy,
10565                 .flags = GENL_ADMIN_PERM,
10566                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10567                                   NL80211_FLAG_NEED_RTNL,
10568         },
10569         {
10570                 .cmd = NL80211_CMD_GET_SCAN,
10571                 .policy = nl80211_policy,
10572                 .dumpit = nl80211_dump_scan,
10573         },
10574         {
10575                 .cmd = NL80211_CMD_START_SCHED_SCAN,
10576                 .doit = nl80211_start_sched_scan,
10577                 .policy = nl80211_policy,
10578                 .flags = GENL_ADMIN_PERM,
10579                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10580                                   NL80211_FLAG_NEED_RTNL,
10581         },
10582         {
10583                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
10584                 .doit = nl80211_stop_sched_scan,
10585                 .policy = nl80211_policy,
10586                 .flags = GENL_ADMIN_PERM,
10587                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10588                                   NL80211_FLAG_NEED_RTNL,
10589         },
10590         {
10591                 .cmd = NL80211_CMD_AUTHENTICATE,
10592                 .doit = nl80211_authenticate,
10593                 .policy = nl80211_policy,
10594                 .flags = GENL_ADMIN_PERM,
10595                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10596                                   NL80211_FLAG_NEED_RTNL |
10597                                   NL80211_FLAG_CLEAR_SKB,
10598         },
10599         {
10600                 .cmd = NL80211_CMD_ASSOCIATE,
10601                 .doit = nl80211_associate,
10602                 .policy = nl80211_policy,
10603                 .flags = GENL_ADMIN_PERM,
10604                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10605                                   NL80211_FLAG_NEED_RTNL,
10606         },
10607         {
10608                 .cmd = NL80211_CMD_DEAUTHENTICATE,
10609                 .doit = nl80211_deauthenticate,
10610                 .policy = nl80211_policy,
10611                 .flags = GENL_ADMIN_PERM,
10612                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10613                                   NL80211_FLAG_NEED_RTNL,
10614         },
10615         {
10616                 .cmd = NL80211_CMD_DISASSOCIATE,
10617                 .doit = nl80211_disassociate,
10618                 .policy = nl80211_policy,
10619                 .flags = GENL_ADMIN_PERM,
10620                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10621                                   NL80211_FLAG_NEED_RTNL,
10622         },
10623         {
10624                 .cmd = NL80211_CMD_JOIN_IBSS,
10625                 .doit = nl80211_join_ibss,
10626                 .policy = nl80211_policy,
10627                 .flags = GENL_ADMIN_PERM,
10628                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10629                                   NL80211_FLAG_NEED_RTNL,
10630         },
10631         {
10632                 .cmd = NL80211_CMD_LEAVE_IBSS,
10633                 .doit = nl80211_leave_ibss,
10634                 .policy = nl80211_policy,
10635                 .flags = GENL_ADMIN_PERM,
10636                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10637                                   NL80211_FLAG_NEED_RTNL,
10638         },
10639 #ifdef CONFIG_NL80211_TESTMODE
10640         {
10641                 .cmd = NL80211_CMD_TESTMODE,
10642                 .doit = nl80211_testmode_do,
10643                 .dumpit = nl80211_testmode_dump,
10644                 .policy = nl80211_policy,
10645                 .flags = GENL_ADMIN_PERM,
10646                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10647                                   NL80211_FLAG_NEED_RTNL,
10648         },
10649 #endif
10650         {
10651                 .cmd = NL80211_CMD_CONNECT,
10652                 .doit = nl80211_connect,
10653                 .policy = nl80211_policy,
10654                 .flags = GENL_ADMIN_PERM,
10655                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10656                                   NL80211_FLAG_NEED_RTNL,
10657         },
10658         {
10659                 .cmd = NL80211_CMD_DISCONNECT,
10660                 .doit = nl80211_disconnect,
10661                 .policy = nl80211_policy,
10662                 .flags = GENL_ADMIN_PERM,
10663                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10664                                   NL80211_FLAG_NEED_RTNL,
10665         },
10666         {
10667                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
10668                 .doit = nl80211_wiphy_netns,
10669                 .policy = nl80211_policy,
10670                 .flags = GENL_ADMIN_PERM,
10671                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10672                                   NL80211_FLAG_NEED_RTNL,
10673         },
10674         {
10675                 .cmd = NL80211_CMD_GET_SURVEY,
10676                 .policy = nl80211_policy,
10677                 .dumpit = nl80211_dump_survey,
10678         },
10679         {
10680                 .cmd = NL80211_CMD_SET_PMKSA,
10681                 .doit = nl80211_setdel_pmksa,
10682                 .policy = nl80211_policy,
10683                 .flags = GENL_ADMIN_PERM,
10684                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10685                                   NL80211_FLAG_NEED_RTNL,
10686         },
10687         {
10688                 .cmd = NL80211_CMD_DEL_PMKSA,
10689                 .doit = nl80211_setdel_pmksa,
10690                 .policy = nl80211_policy,
10691                 .flags = GENL_ADMIN_PERM,
10692                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10693                                   NL80211_FLAG_NEED_RTNL,
10694         },
10695         {
10696                 .cmd = NL80211_CMD_FLUSH_PMKSA,
10697                 .doit = nl80211_flush_pmksa,
10698                 .policy = nl80211_policy,
10699                 .flags = GENL_ADMIN_PERM,
10700                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10701                                   NL80211_FLAG_NEED_RTNL,
10702         },
10703         {
10704                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
10705                 .doit = nl80211_remain_on_channel,
10706                 .policy = nl80211_policy,
10707                 .flags = GENL_ADMIN_PERM,
10708                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10709                                   NL80211_FLAG_NEED_RTNL,
10710         },
10711         {
10712                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
10713                 .doit = nl80211_cancel_remain_on_channel,
10714                 .policy = nl80211_policy,
10715                 .flags = GENL_ADMIN_PERM,
10716                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10717                                   NL80211_FLAG_NEED_RTNL,
10718         },
10719         {
10720                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
10721                 .doit = nl80211_set_tx_bitrate_mask,
10722                 .policy = nl80211_policy,
10723                 .flags = GENL_ADMIN_PERM,
10724                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10725                                   NL80211_FLAG_NEED_RTNL,
10726         },
10727         {
10728                 .cmd = NL80211_CMD_REGISTER_FRAME,
10729                 .doit = nl80211_register_mgmt,
10730                 .policy = nl80211_policy,
10731                 .flags = GENL_ADMIN_PERM,
10732                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10733                                   NL80211_FLAG_NEED_RTNL,
10734         },
10735         {
10736                 .cmd = NL80211_CMD_FRAME,
10737                 .doit = nl80211_tx_mgmt,
10738                 .policy = nl80211_policy,
10739                 .flags = GENL_ADMIN_PERM,
10740                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10741                                   NL80211_FLAG_NEED_RTNL,
10742         },
10743         {
10744                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
10745                 .doit = nl80211_tx_mgmt_cancel_wait,
10746                 .policy = nl80211_policy,
10747                 .flags = GENL_ADMIN_PERM,
10748                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10749                                   NL80211_FLAG_NEED_RTNL,
10750         },
10751         {
10752                 .cmd = NL80211_CMD_SET_POWER_SAVE,
10753                 .doit = nl80211_set_power_save,
10754                 .policy = nl80211_policy,
10755                 .flags = GENL_ADMIN_PERM,
10756                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10757                                   NL80211_FLAG_NEED_RTNL,
10758         },
10759         {
10760                 .cmd = NL80211_CMD_GET_POWER_SAVE,
10761                 .doit = nl80211_get_power_save,
10762                 .policy = nl80211_policy,
10763                 /* can be retrieved by unprivileged users */
10764                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10765                                   NL80211_FLAG_NEED_RTNL,
10766         },
10767         {
10768                 .cmd = NL80211_CMD_SET_CQM,
10769                 .doit = nl80211_set_cqm,
10770                 .policy = nl80211_policy,
10771                 .flags = GENL_ADMIN_PERM,
10772                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10773                                   NL80211_FLAG_NEED_RTNL,
10774         },
10775         {
10776                 .cmd = NL80211_CMD_SET_CHANNEL,
10777                 .doit = nl80211_set_channel,
10778                 .policy = nl80211_policy,
10779                 .flags = GENL_ADMIN_PERM,
10780                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10781                                   NL80211_FLAG_NEED_RTNL,
10782         },
10783         {
10784                 .cmd = NL80211_CMD_SET_WDS_PEER,
10785                 .doit = nl80211_set_wds_peer,
10786                 .policy = nl80211_policy,
10787                 .flags = GENL_ADMIN_PERM,
10788                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10789                                   NL80211_FLAG_NEED_RTNL,
10790         },
10791         {
10792                 .cmd = NL80211_CMD_JOIN_MESH,
10793                 .doit = nl80211_join_mesh,
10794                 .policy = nl80211_policy,
10795                 .flags = GENL_ADMIN_PERM,
10796                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10797                                   NL80211_FLAG_NEED_RTNL,
10798         },
10799         {
10800                 .cmd = NL80211_CMD_LEAVE_MESH,
10801                 .doit = nl80211_leave_mesh,
10802                 .policy = nl80211_policy,
10803                 .flags = GENL_ADMIN_PERM,
10804                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10805                                   NL80211_FLAG_NEED_RTNL,
10806         },
10807         {
10808                 .cmd = NL80211_CMD_JOIN_OCB,
10809                 .doit = nl80211_join_ocb,
10810                 .policy = nl80211_policy,
10811                 .flags = GENL_ADMIN_PERM,
10812                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10813                                   NL80211_FLAG_NEED_RTNL,
10814         },
10815         {
10816                 .cmd = NL80211_CMD_LEAVE_OCB,
10817                 .doit = nl80211_leave_ocb,
10818                 .policy = nl80211_policy,
10819                 .flags = GENL_ADMIN_PERM,
10820                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10821                                   NL80211_FLAG_NEED_RTNL,
10822         },
10823 #ifdef CONFIG_PM
10824         {
10825                 .cmd = NL80211_CMD_GET_WOWLAN,
10826                 .doit = nl80211_get_wowlan,
10827                 .policy = nl80211_policy,
10828                 /* can be retrieved by unprivileged users */
10829                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10830                                   NL80211_FLAG_NEED_RTNL,
10831         },
10832         {
10833                 .cmd = NL80211_CMD_SET_WOWLAN,
10834                 .doit = nl80211_set_wowlan,
10835                 .policy = nl80211_policy,
10836                 .flags = GENL_ADMIN_PERM,
10837                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10838                                   NL80211_FLAG_NEED_RTNL,
10839         },
10840 #endif
10841         {
10842                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
10843                 .doit = nl80211_set_rekey_data,
10844                 .policy = nl80211_policy,
10845                 .flags = GENL_ADMIN_PERM,
10846                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10847                                   NL80211_FLAG_NEED_RTNL |
10848                                   NL80211_FLAG_CLEAR_SKB,
10849         },
10850         {
10851                 .cmd = NL80211_CMD_TDLS_MGMT,
10852                 .doit = nl80211_tdls_mgmt,
10853                 .policy = nl80211_policy,
10854                 .flags = GENL_ADMIN_PERM,
10855                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10856                                   NL80211_FLAG_NEED_RTNL,
10857         },
10858         {
10859                 .cmd = NL80211_CMD_TDLS_OPER,
10860                 .doit = nl80211_tdls_oper,
10861                 .policy = nl80211_policy,
10862                 .flags = GENL_ADMIN_PERM,
10863                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10864                                   NL80211_FLAG_NEED_RTNL,
10865         },
10866         {
10867                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
10868                 .doit = nl80211_register_unexpected_frame,
10869                 .policy = nl80211_policy,
10870                 .flags = GENL_ADMIN_PERM,
10871                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10872                                   NL80211_FLAG_NEED_RTNL,
10873         },
10874         {
10875                 .cmd = NL80211_CMD_PROBE_CLIENT,
10876                 .doit = nl80211_probe_client,
10877                 .policy = nl80211_policy,
10878                 .flags = GENL_ADMIN_PERM,
10879                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10880                                   NL80211_FLAG_NEED_RTNL,
10881         },
10882         {
10883                 .cmd = NL80211_CMD_REGISTER_BEACONS,
10884                 .doit = nl80211_register_beacons,
10885                 .policy = nl80211_policy,
10886                 .flags = GENL_ADMIN_PERM,
10887                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10888                                   NL80211_FLAG_NEED_RTNL,
10889         },
10890         {
10891                 .cmd = NL80211_CMD_SET_NOACK_MAP,
10892                 .doit = nl80211_set_noack_map,
10893                 .policy = nl80211_policy,
10894                 .flags = GENL_ADMIN_PERM,
10895                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10896                                   NL80211_FLAG_NEED_RTNL,
10897         },
10898         {
10899                 .cmd = NL80211_CMD_START_P2P_DEVICE,
10900                 .doit = nl80211_start_p2p_device,
10901                 .policy = nl80211_policy,
10902                 .flags = GENL_ADMIN_PERM,
10903                 .internal_flags = NL80211_FLAG_NEED_WDEV |
10904                                   NL80211_FLAG_NEED_RTNL,
10905         },
10906         {
10907                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
10908                 .doit = nl80211_stop_p2p_device,
10909                 .policy = nl80211_policy,
10910                 .flags = GENL_ADMIN_PERM,
10911                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10912                                   NL80211_FLAG_NEED_RTNL,
10913         },
10914         {
10915                 .cmd = NL80211_CMD_SET_MCAST_RATE,
10916                 .doit = nl80211_set_mcast_rate,
10917                 .policy = nl80211_policy,
10918                 .flags = GENL_ADMIN_PERM,
10919                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10920                                   NL80211_FLAG_NEED_RTNL,
10921         },
10922         {
10923                 .cmd = NL80211_CMD_SET_MAC_ACL,
10924                 .doit = nl80211_set_mac_acl,
10925                 .policy = nl80211_policy,
10926                 .flags = GENL_ADMIN_PERM,
10927                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
10928                                   NL80211_FLAG_NEED_RTNL,
10929         },
10930         {
10931                 .cmd = NL80211_CMD_RADAR_DETECT,
10932                 .doit = nl80211_start_radar_detection,
10933                 .policy = nl80211_policy,
10934                 .flags = GENL_ADMIN_PERM,
10935                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10936                                   NL80211_FLAG_NEED_RTNL,
10937         },
10938         {
10939                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
10940                 .doit = nl80211_get_protocol_features,
10941                 .policy = nl80211_policy,
10942         },
10943         {
10944                 .cmd = NL80211_CMD_UPDATE_FT_IES,
10945                 .doit = nl80211_update_ft_ies,
10946                 .policy = nl80211_policy,
10947                 .flags = GENL_ADMIN_PERM,
10948                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10949                                   NL80211_FLAG_NEED_RTNL,
10950         },
10951         {
10952                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
10953                 .doit = nl80211_crit_protocol_start,
10954                 .policy = nl80211_policy,
10955                 .flags = GENL_ADMIN_PERM,
10956                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10957                                   NL80211_FLAG_NEED_RTNL,
10958         },
10959         {
10960                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
10961                 .doit = nl80211_crit_protocol_stop,
10962                 .policy = nl80211_policy,
10963                 .flags = GENL_ADMIN_PERM,
10964                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
10965                                   NL80211_FLAG_NEED_RTNL,
10966         },
10967         {
10968                 .cmd = NL80211_CMD_GET_COALESCE,
10969                 .doit = nl80211_get_coalesce,
10970                 .policy = nl80211_policy,
10971                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10972                                   NL80211_FLAG_NEED_RTNL,
10973         },
10974         {
10975                 .cmd = NL80211_CMD_SET_COALESCE,
10976                 .doit = nl80211_set_coalesce,
10977                 .policy = nl80211_policy,
10978                 .flags = GENL_ADMIN_PERM,
10979                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10980                                   NL80211_FLAG_NEED_RTNL,
10981         },
10982         {
10983                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
10984                 .doit = nl80211_channel_switch,
10985                 .policy = nl80211_policy,
10986                 .flags = GENL_ADMIN_PERM,
10987                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
10988                                   NL80211_FLAG_NEED_RTNL,
10989         },
10990         {
10991                 .cmd = NL80211_CMD_VENDOR,
10992                 .doit = nl80211_vendor_cmd,
10993                 .policy = nl80211_policy,
10994                 .flags = GENL_ADMIN_PERM,
10995                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
10996                                   NL80211_FLAG_NEED_RTNL,
10997         },
10998         {
10999                 .cmd = NL80211_CMD_SET_QOS_MAP,
11000                 .doit = nl80211_set_qos_map,
11001                 .policy = nl80211_policy,
11002                 .flags = GENL_ADMIN_PERM,
11003                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11004                                   NL80211_FLAG_NEED_RTNL,
11005         },
11006         {
11007                 .cmd = NL80211_CMD_ADD_TX_TS,
11008                 .doit = nl80211_add_tx_ts,
11009                 .policy = nl80211_policy,
11010                 .flags = GENL_ADMIN_PERM,
11011                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11012                                   NL80211_FLAG_NEED_RTNL,
11013         },
11014         {
11015                 .cmd = NL80211_CMD_DEL_TX_TS,
11016                 .doit = nl80211_del_tx_ts,
11017                 .policy = nl80211_policy,
11018                 .flags = GENL_ADMIN_PERM,
11019                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11020                                   NL80211_FLAG_NEED_RTNL,
11021         },
11022         {
11023                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
11024                 .doit = nl80211_tdls_channel_switch,
11025                 .policy = nl80211_policy,
11026                 .flags = GENL_ADMIN_PERM,
11027                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11028                                   NL80211_FLAG_NEED_RTNL,
11029         },
11030         {
11031                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
11032                 .doit = nl80211_tdls_cancel_channel_switch,
11033                 .policy = nl80211_policy,
11034                 .flags = GENL_ADMIN_PERM,
11035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
11036                                   NL80211_FLAG_NEED_RTNL,
11037         },
11038 };
11039
11040 /* notification functions */
11041
11042 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
11043                           enum nl80211_commands cmd)
11044 {
11045         struct sk_buff *msg;
11046         struct nl80211_dump_wiphy_state state = {};
11047
11048         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
11049                 cmd != NL80211_CMD_DEL_WIPHY);
11050
11051         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11052         if (!msg)
11053                 return;
11054
11055         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
11056                 nlmsg_free(msg);
11057                 return;
11058         }
11059
11060         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11061                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
11062 }
11063
11064 static int nl80211_add_scan_req(struct sk_buff *msg,
11065                                 struct cfg80211_registered_device *rdev)
11066 {
11067         struct cfg80211_scan_request *req = rdev->scan_req;
11068         struct nlattr *nest;
11069         int i;
11070
11071         if (WARN_ON(!req))
11072                 return 0;
11073
11074         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS);
11075         if (!nest)
11076                 goto nla_put_failure;
11077         for (i = 0; i < req->n_ssids; i++) {
11078                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
11079                         goto nla_put_failure;
11080         }
11081         nla_nest_end(msg, nest);
11082
11083         nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11084         if (!nest)
11085                 goto nla_put_failure;
11086         for (i = 0; i < req->n_channels; i++) {
11087                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11088                         goto nla_put_failure;
11089         }
11090         nla_nest_end(msg, nest);
11091
11092         if (req->ie &&
11093             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
11094                 goto nla_put_failure;
11095
11096         if (req->flags &&
11097             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
11098                 goto nla_put_failure;
11099
11100         return 0;
11101  nla_put_failure:
11102         return -ENOBUFS;
11103 }
11104
11105 static int nl80211_send_scan_msg(struct sk_buff *msg,
11106                                  struct cfg80211_registered_device *rdev,
11107                                  struct wireless_dev *wdev,
11108                                  u32 portid, u32 seq, int flags,
11109                                  u32 cmd)
11110 {
11111         void *hdr;
11112
11113         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11114         if (!hdr)
11115                 return -1;
11116
11117         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11118             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11119                                          wdev->netdev->ifindex)) ||
11120             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
11121                 goto nla_put_failure;
11122
11123         /* ignore errors and send incomplete event anyway */
11124         nl80211_add_scan_req(msg, rdev);
11125
11126         genlmsg_end(msg, hdr);
11127         return 0;
11128
11129  nla_put_failure:
11130         genlmsg_cancel(msg, hdr);
11131         return -EMSGSIZE;
11132 }
11133
11134 static int
11135 nl80211_send_sched_scan_msg(struct sk_buff *msg,
11136                             struct cfg80211_registered_device *rdev,
11137                             struct net_device *netdev,
11138                             u32 portid, u32 seq, int flags, u32 cmd)
11139 {
11140         void *hdr;
11141
11142         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
11143         if (!hdr)
11144                 return -1;
11145
11146         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11147             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
11148                 goto nla_put_failure;
11149
11150         genlmsg_end(msg, hdr);
11151         return 0;
11152
11153  nla_put_failure:
11154         genlmsg_cancel(msg, hdr);
11155         return -EMSGSIZE;
11156 }
11157
11158 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
11159                              struct wireless_dev *wdev)
11160 {
11161         struct sk_buff *msg;
11162
11163         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11164         if (!msg)
11165                 return;
11166
11167         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11168                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
11169                 nlmsg_free(msg);
11170                 return;
11171         }
11172
11173         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11174                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11175 }
11176
11177 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
11178                                        struct wireless_dev *wdev, bool aborted)
11179 {
11180         struct sk_buff *msg;
11181
11182         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11183         if (!msg)
11184                 return NULL;
11185
11186         if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0,
11187                                   aborted ? NL80211_CMD_SCAN_ABORTED :
11188                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
11189                 nlmsg_free(msg);
11190                 return NULL;
11191         }
11192
11193         return msg;
11194 }
11195
11196 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev,
11197                               struct sk_buff *msg)
11198 {
11199         if (!msg)
11200                 return;
11201
11202         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11203                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11204 }
11205
11206 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
11207                                      struct net_device *netdev)
11208 {
11209         struct sk_buff *msg;
11210
11211         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11212         if (!msg)
11213                 return;
11214
11215         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
11216                                         NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
11217                 nlmsg_free(msg);
11218                 return;
11219         }
11220
11221         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11222                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11223 }
11224
11225 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
11226                              struct net_device *netdev, u32 cmd)
11227 {
11228         struct sk_buff *msg;
11229
11230         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11231         if (!msg)
11232                 return;
11233
11234         if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
11235                 nlmsg_free(msg);
11236                 return;
11237         }
11238
11239         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11240                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
11241 }
11242
11243 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
11244                                           struct regulatory_request *request)
11245 {
11246         /* Userspace can always count this one always being set */
11247         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
11248                 goto nla_put_failure;
11249
11250         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
11251                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11252                                NL80211_REGDOM_TYPE_WORLD))
11253                         goto nla_put_failure;
11254         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
11255                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11256                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
11257                         goto nla_put_failure;
11258         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
11259                    request->intersect) {
11260                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11261                                NL80211_REGDOM_TYPE_INTERSECTION))
11262                         goto nla_put_failure;
11263         } else {
11264                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
11265                                NL80211_REGDOM_TYPE_COUNTRY) ||
11266                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
11267                                    request->alpha2))
11268                         goto nla_put_failure;
11269         }
11270
11271         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
11272                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
11273
11274                 if (wiphy &&
11275                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
11276                         goto nla_put_failure;
11277
11278                 if (wiphy &&
11279                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
11280                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
11281                         goto nla_put_failure;
11282         }
11283
11284         return true;
11285
11286 nla_put_failure:
11287         return false;
11288 }
11289
11290 /*
11291  * This can happen on global regulatory changes or device specific settings
11292  * based on custom regulatory domains.
11293  */
11294 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
11295                                      struct regulatory_request *request)
11296 {
11297         struct sk_buff *msg;
11298         void *hdr;
11299
11300         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11301         if (!msg)
11302                 return;
11303
11304         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
11305         if (!hdr) {
11306                 nlmsg_free(msg);
11307                 return;
11308         }
11309
11310         if (nl80211_reg_change_event_fill(msg, request) == false)
11311                 goto nla_put_failure;
11312
11313         genlmsg_end(msg, hdr);
11314
11315         rcu_read_lock();
11316         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11317                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11318         rcu_read_unlock();
11319
11320         return;
11321
11322 nla_put_failure:
11323         genlmsg_cancel(msg, hdr);
11324         nlmsg_free(msg);
11325 }
11326
11327 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
11328                                     struct net_device *netdev,
11329                                     const u8 *buf, size_t len,
11330                                     enum nl80211_commands cmd, gfp_t gfp,
11331                                     int uapsd_queues)
11332 {
11333         struct sk_buff *msg;
11334         void *hdr;
11335
11336         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11337         if (!msg)
11338                 return;
11339
11340         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11341         if (!hdr) {
11342                 nlmsg_free(msg);
11343                 return;
11344         }
11345
11346         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11347             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11348             nla_put(msg, NL80211_ATTR_FRAME, len, buf))
11349                 goto nla_put_failure;
11350
11351         if (uapsd_queues >= 0) {
11352                 struct nlattr *nla_wmm =
11353                         nla_nest_start(msg, NL80211_ATTR_STA_WME);
11354                 if (!nla_wmm)
11355                         goto nla_put_failure;
11356
11357                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
11358                                uapsd_queues))
11359                         goto nla_put_failure;
11360
11361                 nla_nest_end(msg, nla_wmm);
11362         }
11363
11364         genlmsg_end(msg, hdr);
11365
11366         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11367                                 NL80211_MCGRP_MLME, gfp);
11368         return;
11369
11370  nla_put_failure:
11371         genlmsg_cancel(msg, hdr);
11372         nlmsg_free(msg);
11373 }
11374
11375 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
11376                           struct net_device *netdev, const u8 *buf,
11377                           size_t len, gfp_t gfp)
11378 {
11379         nl80211_send_mlme_event(rdev, netdev, buf, len,
11380                                 NL80211_CMD_AUTHENTICATE, gfp, -1);
11381 }
11382
11383 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
11384                            struct net_device *netdev, const u8 *buf,
11385                            size_t len, gfp_t gfp, int uapsd_queues)
11386 {
11387         nl80211_send_mlme_event(rdev, netdev, buf, len,
11388                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues);
11389 }
11390
11391 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
11392                          struct net_device *netdev, const u8 *buf,
11393                          size_t len, gfp_t gfp)
11394 {
11395         nl80211_send_mlme_event(rdev, netdev, buf, len,
11396                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1);
11397 }
11398
11399 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
11400                            struct net_device *netdev, const u8 *buf,
11401                            size_t len, gfp_t gfp)
11402 {
11403         nl80211_send_mlme_event(rdev, netdev, buf, len,
11404                                 NL80211_CMD_DISASSOCIATE, gfp, -1);
11405 }
11406
11407 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
11408                                   size_t len)
11409 {
11410         struct wireless_dev *wdev = dev->ieee80211_ptr;
11411         struct wiphy *wiphy = wdev->wiphy;
11412         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11413         const struct ieee80211_mgmt *mgmt = (void *)buf;
11414         u32 cmd;
11415
11416         if (WARN_ON(len < 2))
11417                 return;
11418
11419         if (ieee80211_is_deauth(mgmt->frame_control))
11420                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
11421         else
11422                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
11423
11424         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
11425         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1);
11426 }
11427 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
11428
11429 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
11430                                       struct net_device *netdev, int cmd,
11431                                       const u8 *addr, gfp_t gfp)
11432 {
11433         struct sk_buff *msg;
11434         void *hdr;
11435
11436         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11437         if (!msg)
11438                 return;
11439
11440         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11441         if (!hdr) {
11442                 nlmsg_free(msg);
11443                 return;
11444         }
11445
11446         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11447             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11448             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
11449             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11450                 goto nla_put_failure;
11451
11452         genlmsg_end(msg, hdr);
11453
11454         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11455                                 NL80211_MCGRP_MLME, gfp);
11456         return;
11457
11458  nla_put_failure:
11459         genlmsg_cancel(msg, hdr);
11460         nlmsg_free(msg);
11461 }
11462
11463 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
11464                                struct net_device *netdev, const u8 *addr,
11465                                gfp_t gfp)
11466 {
11467         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
11468                                   addr, gfp);
11469 }
11470
11471 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
11472                                 struct net_device *netdev, const u8 *addr,
11473                                 gfp_t gfp)
11474 {
11475         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
11476                                   addr, gfp);
11477 }
11478
11479 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
11480                                  struct net_device *netdev, const u8 *bssid,
11481                                  const u8 *req_ie, size_t req_ie_len,
11482                                  const u8 *resp_ie, size_t resp_ie_len,
11483                                  u16 status, gfp_t gfp)
11484 {
11485         struct sk_buff *msg;
11486         void *hdr;
11487
11488         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11489         if (!msg)
11490                 return;
11491
11492         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
11493         if (!hdr) {
11494                 nlmsg_free(msg);
11495                 return;
11496         }
11497
11498         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11499             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11500             (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) ||
11501             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) ||
11502             (req_ie &&
11503              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11504             (resp_ie &&
11505              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11506                 goto nla_put_failure;
11507
11508         genlmsg_end(msg, hdr);
11509
11510         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11511                                 NL80211_MCGRP_MLME, gfp);
11512         return;
11513
11514  nla_put_failure:
11515         genlmsg_cancel(msg, hdr);
11516         nlmsg_free(msg);
11517
11518 }
11519
11520 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
11521                          struct net_device *netdev, const u8 *bssid,
11522                          const u8 *req_ie, size_t req_ie_len,
11523                          const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp)
11524 {
11525         struct sk_buff *msg;
11526         void *hdr;
11527
11528         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11529         if (!msg)
11530                 return;
11531
11532         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
11533         if (!hdr) {
11534                 nlmsg_free(msg);
11535                 return;
11536         }
11537
11538         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11539             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11540             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
11541             (req_ie &&
11542              nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) ||
11543             (resp_ie &&
11544              nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie)))
11545                 goto nla_put_failure;
11546
11547         genlmsg_end(msg, hdr);
11548
11549         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11550                                 NL80211_MCGRP_MLME, gfp);
11551         return;
11552
11553  nla_put_failure:
11554         genlmsg_cancel(msg, hdr);
11555         nlmsg_free(msg);
11556
11557 }
11558
11559 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
11560                                struct net_device *netdev, u16 reason,
11561                                const u8 *ie, size_t ie_len, bool from_ap)
11562 {
11563         struct sk_buff *msg;
11564         void *hdr;
11565
11566         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11567         if (!msg)
11568                 return;
11569
11570         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
11571         if (!hdr) {
11572                 nlmsg_free(msg);
11573                 return;
11574         }
11575
11576         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11577             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11578             (from_ap && reason &&
11579              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
11580             (from_ap &&
11581              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
11582             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
11583                 goto nla_put_failure;
11584
11585         genlmsg_end(msg, hdr);
11586
11587         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11588                                 NL80211_MCGRP_MLME, GFP_KERNEL);
11589         return;
11590
11591  nla_put_failure:
11592         genlmsg_cancel(msg, hdr);
11593         nlmsg_free(msg);
11594
11595 }
11596
11597 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
11598                              struct net_device *netdev, const u8 *bssid,
11599                              gfp_t gfp)
11600 {
11601         struct sk_buff *msg;
11602         void *hdr;
11603
11604         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11605         if (!msg)
11606                 return;
11607
11608         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
11609         if (!hdr) {
11610                 nlmsg_free(msg);
11611                 return;
11612         }
11613
11614         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11615             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11616             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
11617                 goto nla_put_failure;
11618
11619         genlmsg_end(msg, hdr);
11620
11621         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11622                                 NL80211_MCGRP_MLME, gfp);
11623         return;
11624
11625  nla_put_failure:
11626         genlmsg_cancel(msg, hdr);
11627         nlmsg_free(msg);
11628 }
11629
11630 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
11631                                         const u8* ie, u8 ie_len, gfp_t gfp)
11632 {
11633         struct wireless_dev *wdev = dev->ieee80211_ptr;
11634         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11635         struct sk_buff *msg;
11636         void *hdr;
11637
11638         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
11639                 return;
11640
11641         trace_cfg80211_notify_new_peer_candidate(dev, addr);
11642
11643         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11644         if (!msg)
11645                 return;
11646
11647         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
11648         if (!hdr) {
11649                 nlmsg_free(msg);
11650                 return;
11651         }
11652
11653         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11654             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11655             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
11656             (ie_len && ie &&
11657              nla_put(msg, NL80211_ATTR_IE, ie_len , ie)))
11658                 goto nla_put_failure;
11659
11660         genlmsg_end(msg, hdr);
11661
11662         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11663                                 NL80211_MCGRP_MLME, gfp);
11664         return;
11665
11666  nla_put_failure:
11667         genlmsg_cancel(msg, hdr);
11668         nlmsg_free(msg);
11669 }
11670 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
11671
11672 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
11673                                  struct net_device *netdev, const u8 *addr,
11674                                  enum nl80211_key_type key_type, int key_id,
11675                                  const u8 *tsc, gfp_t gfp)
11676 {
11677         struct sk_buff *msg;
11678         void *hdr;
11679
11680         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11681         if (!msg)
11682                 return;
11683
11684         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
11685         if (!hdr) {
11686                 nlmsg_free(msg);
11687                 return;
11688         }
11689
11690         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11691             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
11692             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
11693             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
11694             (key_id != -1 &&
11695              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
11696             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
11697                 goto nla_put_failure;
11698
11699         genlmsg_end(msg, hdr);
11700
11701         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11702                                 NL80211_MCGRP_MLME, gfp);
11703         return;
11704
11705  nla_put_failure:
11706         genlmsg_cancel(msg, hdr);
11707         nlmsg_free(msg);
11708 }
11709
11710 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
11711                                     struct ieee80211_channel *channel_before,
11712                                     struct ieee80211_channel *channel_after)
11713 {
11714         struct sk_buff *msg;
11715         void *hdr;
11716         struct nlattr *nl_freq;
11717
11718         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
11719         if (!msg)
11720                 return;
11721
11722         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
11723         if (!hdr) {
11724                 nlmsg_free(msg);
11725                 return;
11726         }
11727
11728         /*
11729          * Since we are applying the beacon hint to a wiphy we know its
11730          * wiphy_idx is valid
11731          */
11732         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
11733                 goto nla_put_failure;
11734
11735         /* Before */
11736         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE);
11737         if (!nl_freq)
11738                 goto nla_put_failure;
11739         if (nl80211_msg_put_channel(msg, channel_before, false))
11740                 goto nla_put_failure;
11741         nla_nest_end(msg, nl_freq);
11742
11743         /* After */
11744         nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER);
11745         if (!nl_freq)
11746                 goto nla_put_failure;
11747         if (nl80211_msg_put_channel(msg, channel_after, false))
11748                 goto nla_put_failure;
11749         nla_nest_end(msg, nl_freq);
11750
11751         genlmsg_end(msg, hdr);
11752
11753         rcu_read_lock();
11754         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
11755                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
11756         rcu_read_unlock();
11757
11758         return;
11759
11760 nla_put_failure:
11761         genlmsg_cancel(msg, hdr);
11762         nlmsg_free(msg);
11763 }
11764
11765 static void nl80211_send_remain_on_chan_event(
11766         int cmd, struct cfg80211_registered_device *rdev,
11767         struct wireless_dev *wdev, u64 cookie,
11768         struct ieee80211_channel *chan,
11769         unsigned int duration, gfp_t gfp)
11770 {
11771         struct sk_buff *msg;
11772         void *hdr;
11773
11774         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11775         if (!msg)
11776                 return;
11777
11778         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11779         if (!hdr) {
11780                 nlmsg_free(msg);
11781                 return;
11782         }
11783
11784         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11785             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
11786                                          wdev->netdev->ifindex)) ||
11787             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
11788             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
11789             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
11790                         NL80211_CHAN_NO_HT) ||
11791             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie))
11792                 goto nla_put_failure;
11793
11794         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
11795             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
11796                 goto nla_put_failure;
11797
11798         genlmsg_end(msg, hdr);
11799
11800         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11801                                 NL80211_MCGRP_MLME, gfp);
11802         return;
11803
11804  nla_put_failure:
11805         genlmsg_cancel(msg, hdr);
11806         nlmsg_free(msg);
11807 }
11808
11809 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
11810                                struct ieee80211_channel *chan,
11811                                unsigned int duration, gfp_t gfp)
11812 {
11813         struct wiphy *wiphy = wdev->wiphy;
11814         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11815
11816         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
11817         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
11818                                           rdev, wdev, cookie, chan,
11819                                           duration, gfp);
11820 }
11821 EXPORT_SYMBOL(cfg80211_ready_on_channel);
11822
11823 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
11824                                         struct ieee80211_channel *chan,
11825                                         gfp_t gfp)
11826 {
11827         struct wiphy *wiphy = wdev->wiphy;
11828         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11829
11830         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
11831         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
11832                                           rdev, wdev, cookie, chan, 0, gfp);
11833 }
11834 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
11835
11836 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
11837                       struct station_info *sinfo, gfp_t gfp)
11838 {
11839         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11840         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11841         struct sk_buff *msg;
11842
11843         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
11844
11845         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11846         if (!msg)
11847                 return;
11848
11849         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
11850                                  rdev, dev, mac_addr, sinfo) < 0) {
11851                 nlmsg_free(msg);
11852                 return;
11853         }
11854
11855         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11856                                 NL80211_MCGRP_MLME, gfp);
11857 }
11858 EXPORT_SYMBOL(cfg80211_new_sta);
11859
11860 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
11861                             struct station_info *sinfo, gfp_t gfp)
11862 {
11863         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11864         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11865         struct sk_buff *msg;
11866         struct station_info empty_sinfo = {};
11867
11868         if (!sinfo)
11869                 sinfo = &empty_sinfo;
11870
11871         trace_cfg80211_del_sta(dev, mac_addr);
11872
11873         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
11874         if (!msg)
11875                 return;
11876
11877         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
11878                                  rdev, dev, mac_addr, sinfo) < 0) {
11879                 nlmsg_free(msg);
11880                 return;
11881         }
11882
11883         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11884                                 NL80211_MCGRP_MLME, gfp);
11885 }
11886 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
11887
11888 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
11889                           enum nl80211_connect_failed_reason reason,
11890                           gfp_t gfp)
11891 {
11892         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
11893         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
11894         struct sk_buff *msg;
11895         void *hdr;
11896
11897         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
11898         if (!msg)
11899                 return;
11900
11901         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
11902         if (!hdr) {
11903                 nlmsg_free(msg);
11904                 return;
11905         }
11906
11907         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11908             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
11909             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
11910                 goto nla_put_failure;
11911
11912         genlmsg_end(msg, hdr);
11913
11914         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
11915                                 NL80211_MCGRP_MLME, gfp);
11916         return;
11917
11918  nla_put_failure:
11919         genlmsg_cancel(msg, hdr);
11920         nlmsg_free(msg);
11921 }
11922 EXPORT_SYMBOL(cfg80211_conn_failed);
11923
11924 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
11925                                        const u8 *addr, gfp_t gfp)
11926 {
11927         struct wireless_dev *wdev = dev->ieee80211_ptr;
11928         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
11929         struct sk_buff *msg;
11930         void *hdr;
11931         u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid);
11932
11933         if (!nlportid)
11934                 return false;
11935
11936         msg = nlmsg_new(100, gfp);
11937         if (!msg)
11938                 return true;
11939
11940         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
11941         if (!hdr) {
11942                 nlmsg_free(msg);
11943                 return true;
11944         }
11945
11946         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
11947             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
11948             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
11949                 goto nla_put_failure;
11950
11951         genlmsg_end(msg, hdr);
11952         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
11953         return true;
11954
11955  nla_put_failure:
11956         genlmsg_cancel(msg, hdr);
11957         nlmsg_free(msg);
11958         return true;
11959 }
11960
11961 bool cfg80211_rx_spurious_frame(struct net_device *dev,
11962                                 const u8 *addr, gfp_t gfp)
11963 {
11964         struct wireless_dev *wdev = dev->ieee80211_ptr;
11965         bool ret;
11966
11967         trace_cfg80211_rx_spurious_frame(dev, addr);
11968
11969         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11970                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
11971                 trace_cfg80211_return_bool(false);
11972                 return false;
11973         }
11974         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
11975                                          addr, gfp);
11976         trace_cfg80211_return_bool(ret);
11977         return ret;
11978 }
11979 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
11980
11981 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
11982                                         const u8 *addr, gfp_t gfp)
11983 {
11984         struct wireless_dev *wdev = dev->ieee80211_ptr;
11985         bool ret;
11986
11987         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
11988
11989         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
11990                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
11991                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
11992                 trace_cfg80211_return_bool(false);
11993                 return false;
11994         }
11995         ret = __nl80211_unexpected_frame(dev,
11996                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
11997                                          addr, gfp);
11998         trace_cfg80211_return_bool(ret);
11999         return ret;
12000 }
12001 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
12002
12003 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
12004                       struct wireless_dev *wdev, u32 nlportid,
12005                       int freq, int sig_dbm,
12006                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
12007 {
12008         struct net_device *netdev = wdev->netdev;
12009         struct sk_buff *msg;
12010         void *hdr;
12011
12012         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12013         if (!msg)
12014                 return -ENOMEM;
12015
12016         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12017         if (!hdr) {
12018                 nlmsg_free(msg);
12019                 return -ENOMEM;
12020         }
12021
12022         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12023             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12024                                         netdev->ifindex)) ||
12025             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12026             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
12027             (sig_dbm &&
12028              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12029             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12030             (flags &&
12031              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
12032                 goto nla_put_failure;
12033
12034         genlmsg_end(msg, hdr);
12035
12036         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12037
12038  nla_put_failure:
12039         genlmsg_cancel(msg, hdr);
12040         nlmsg_free(msg);
12041         return -ENOBUFS;
12042 }
12043
12044 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
12045                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
12046 {
12047         struct wiphy *wiphy = wdev->wiphy;
12048         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12049         struct net_device *netdev = wdev->netdev;
12050         struct sk_buff *msg;
12051         void *hdr;
12052
12053         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
12054
12055         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12056         if (!msg)
12057                 return;
12058
12059         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
12060         if (!hdr) {
12061                 nlmsg_free(msg);
12062                 return;
12063         }
12064
12065         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12066             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12067                                    netdev->ifindex)) ||
12068             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) ||
12069             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
12070             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12071             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
12072                 goto nla_put_failure;
12073
12074         genlmsg_end(msg, hdr);
12075
12076         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12077                                 NL80211_MCGRP_MLME, gfp);
12078         return;
12079
12080  nla_put_failure:
12081         genlmsg_cancel(msg, hdr);
12082         nlmsg_free(msg);
12083 }
12084 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
12085
12086 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
12087                                             const char *mac, gfp_t gfp)
12088 {
12089         struct wireless_dev *wdev = dev->ieee80211_ptr;
12090         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12091         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12092         void **cb;
12093
12094         if (!msg)
12095                 return NULL;
12096
12097         cb = (void **)msg->cb;
12098
12099         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
12100         if (!cb[0]) {
12101                 nlmsg_free(msg);
12102                 return NULL;
12103         }
12104
12105         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12106             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
12107                 goto nla_put_failure;
12108
12109         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
12110                 goto nla_put_failure;
12111
12112         cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM);
12113         if (!cb[1])
12114                 goto nla_put_failure;
12115
12116         cb[2] = rdev;
12117
12118         return msg;
12119  nla_put_failure:
12120         nlmsg_free(msg);
12121         return NULL;
12122 }
12123
12124 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
12125 {
12126         void **cb = (void **)msg->cb;
12127         struct cfg80211_registered_device *rdev = cb[2];
12128
12129         nla_nest_end(msg, cb[1]);
12130         genlmsg_end(msg, cb[0]);
12131
12132         memset(msg->cb, 0, sizeof(msg->cb));
12133
12134         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12135                                 NL80211_MCGRP_MLME, gfp);
12136 }
12137
12138 void cfg80211_cqm_rssi_notify(struct net_device *dev,
12139                               enum nl80211_cqm_rssi_threshold_event rssi_event,
12140                               gfp_t gfp)
12141 {
12142         struct sk_buff *msg;
12143
12144         trace_cfg80211_cqm_rssi_notify(dev, rssi_event);
12145
12146         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
12147                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
12148                 return;
12149
12150         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12151         if (!msg)
12152                 return;
12153
12154         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
12155                         rssi_event))
12156                 goto nla_put_failure;
12157
12158         cfg80211_send_cqm(msg, gfp);
12159
12160         return;
12161
12162  nla_put_failure:
12163         nlmsg_free(msg);
12164 }
12165 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
12166
12167 void cfg80211_cqm_txe_notify(struct net_device *dev,
12168                              const u8 *peer, u32 num_packets,
12169                              u32 rate, u32 intvl, gfp_t gfp)
12170 {
12171         struct sk_buff *msg;
12172
12173         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12174         if (!msg)
12175                 return;
12176
12177         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
12178                 goto nla_put_failure;
12179
12180         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
12181                 goto nla_put_failure;
12182
12183         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
12184                 goto nla_put_failure;
12185
12186         cfg80211_send_cqm(msg, gfp);
12187         return;
12188
12189  nla_put_failure:
12190         nlmsg_free(msg);
12191 }
12192 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
12193
12194 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
12195                                  const u8 *peer, u32 num_packets, gfp_t gfp)
12196 {
12197         struct sk_buff *msg;
12198
12199         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
12200
12201         msg = cfg80211_prepare_cqm(dev, peer, gfp);
12202         if (!msg)
12203                 return;
12204
12205         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
12206                 goto nla_put_failure;
12207
12208         cfg80211_send_cqm(msg, gfp);
12209         return;
12210
12211  nla_put_failure:
12212         nlmsg_free(msg);
12213 }
12214 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
12215
12216 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
12217 {
12218         struct sk_buff *msg;
12219
12220         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
12221         if (!msg)
12222                 return;
12223
12224         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
12225                 goto nla_put_failure;
12226
12227         cfg80211_send_cqm(msg, gfp);
12228         return;
12229
12230  nla_put_failure:
12231         nlmsg_free(msg);
12232 }
12233 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
12234
12235 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
12236                                      struct net_device *netdev, const u8 *bssid,
12237                                      const u8 *replay_ctr, gfp_t gfp)
12238 {
12239         struct sk_buff *msg;
12240         struct nlattr *rekey_attr;
12241         void *hdr;
12242
12243         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12244         if (!msg)
12245                 return;
12246
12247         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
12248         if (!hdr) {
12249                 nlmsg_free(msg);
12250                 return;
12251         }
12252
12253         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12254             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12255             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
12256                 goto nla_put_failure;
12257
12258         rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA);
12259         if (!rekey_attr)
12260                 goto nla_put_failure;
12261
12262         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
12263                     NL80211_REPLAY_CTR_LEN, replay_ctr))
12264                 goto nla_put_failure;
12265
12266         nla_nest_end(msg, rekey_attr);
12267
12268         genlmsg_end(msg, hdr);
12269
12270         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12271                                 NL80211_MCGRP_MLME, gfp);
12272         return;
12273
12274  nla_put_failure:
12275         genlmsg_cancel(msg, hdr);
12276         nlmsg_free(msg);
12277 }
12278
12279 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
12280                                const u8 *replay_ctr, gfp_t gfp)
12281 {
12282         struct wireless_dev *wdev = dev->ieee80211_ptr;
12283         struct wiphy *wiphy = wdev->wiphy;
12284         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12285
12286         trace_cfg80211_gtk_rekey_notify(dev, bssid);
12287         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
12288 }
12289 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
12290
12291 static void
12292 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
12293                                struct net_device *netdev, int index,
12294                                const u8 *bssid, bool preauth, gfp_t gfp)
12295 {
12296         struct sk_buff *msg;
12297         struct nlattr *attr;
12298         void *hdr;
12299
12300         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12301         if (!msg)
12302                 return;
12303
12304         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
12305         if (!hdr) {
12306                 nlmsg_free(msg);
12307                 return;
12308         }
12309
12310         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12311             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12312                 goto nla_put_failure;
12313
12314         attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE);
12315         if (!attr)
12316                 goto nla_put_failure;
12317
12318         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
12319             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
12320             (preauth &&
12321              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
12322                 goto nla_put_failure;
12323
12324         nla_nest_end(msg, attr);
12325
12326         genlmsg_end(msg, hdr);
12327
12328         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12329                                 NL80211_MCGRP_MLME, gfp);
12330         return;
12331
12332  nla_put_failure:
12333         genlmsg_cancel(msg, hdr);
12334         nlmsg_free(msg);
12335 }
12336
12337 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
12338                                      const u8 *bssid, bool preauth, gfp_t gfp)
12339 {
12340         struct wireless_dev *wdev = dev->ieee80211_ptr;
12341         struct wiphy *wiphy = wdev->wiphy;
12342         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12343
12344         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
12345         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
12346 }
12347 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
12348
12349 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
12350                                      struct net_device *netdev,
12351                                      struct cfg80211_chan_def *chandef,
12352                                      gfp_t gfp,
12353                                      enum nl80211_commands notif,
12354                                      u8 count)
12355 {
12356         struct sk_buff *msg;
12357         void *hdr;
12358
12359         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12360         if (!msg)
12361                 return;
12362
12363         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
12364         if (!hdr) {
12365                 nlmsg_free(msg);
12366                 return;
12367         }
12368
12369         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
12370                 goto nla_put_failure;
12371
12372         if (nl80211_send_chandef(msg, chandef))
12373                 goto nla_put_failure;
12374
12375         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
12376             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
12377                         goto nla_put_failure;
12378
12379         genlmsg_end(msg, hdr);
12380
12381         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12382                                 NL80211_MCGRP_MLME, gfp);
12383         return;
12384
12385  nla_put_failure:
12386         genlmsg_cancel(msg, hdr);
12387         nlmsg_free(msg);
12388 }
12389
12390 void cfg80211_ch_switch_notify(struct net_device *dev,
12391                                struct cfg80211_chan_def *chandef)
12392 {
12393         struct wireless_dev *wdev = dev->ieee80211_ptr;
12394         struct wiphy *wiphy = wdev->wiphy;
12395         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12396
12397         ASSERT_WDEV_LOCK(wdev);
12398
12399         trace_cfg80211_ch_switch_notify(dev, chandef);
12400
12401         wdev->chandef = *chandef;
12402         wdev->preset_chandef = *chandef;
12403         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12404                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
12405 }
12406 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
12407
12408 void cfg80211_ch_switch_started_notify(struct net_device *dev,
12409                                        struct cfg80211_chan_def *chandef,
12410                                        u8 count)
12411 {
12412         struct wireless_dev *wdev = dev->ieee80211_ptr;
12413         struct wiphy *wiphy = wdev->wiphy;
12414         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12415
12416         trace_cfg80211_ch_switch_started_notify(dev, chandef);
12417
12418         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
12419                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
12420 }
12421 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
12422
12423 void
12424 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
12425                      const struct cfg80211_chan_def *chandef,
12426                      enum nl80211_radar_event event,
12427                      struct net_device *netdev, gfp_t gfp)
12428 {
12429         struct sk_buff *msg;
12430         void *hdr;
12431
12432         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12433         if (!msg)
12434                 return;
12435
12436         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
12437         if (!hdr) {
12438                 nlmsg_free(msg);
12439                 return;
12440         }
12441
12442         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
12443                 goto nla_put_failure;
12444
12445         /* NOP and radar events don't need a netdev parameter */
12446         if (netdev) {
12447                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
12448
12449                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12450                     nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12451                         goto nla_put_failure;
12452         }
12453
12454         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
12455                 goto nla_put_failure;
12456
12457         if (nl80211_send_chandef(msg, chandef))
12458                 goto nla_put_failure;
12459
12460         genlmsg_end(msg, hdr);
12461
12462         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12463                                 NL80211_MCGRP_MLME, gfp);
12464         return;
12465
12466  nla_put_failure:
12467         genlmsg_cancel(msg, hdr);
12468         nlmsg_free(msg);
12469 }
12470
12471 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
12472                            u64 cookie, bool acked, gfp_t gfp)
12473 {
12474         struct wireless_dev *wdev = dev->ieee80211_ptr;
12475         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12476         struct sk_buff *msg;
12477         void *hdr;
12478
12479         trace_cfg80211_probe_status(dev, addr, cookie, acked);
12480
12481         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12482
12483         if (!msg)
12484                 return;
12485
12486         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
12487         if (!hdr) {
12488                 nlmsg_free(msg);
12489                 return;
12490         }
12491
12492         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12493             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12494             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
12495             nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) ||
12496             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)))
12497                 goto nla_put_failure;
12498
12499         genlmsg_end(msg, hdr);
12500
12501         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12502                                 NL80211_MCGRP_MLME, gfp);
12503         return;
12504
12505  nla_put_failure:
12506         genlmsg_cancel(msg, hdr);
12507         nlmsg_free(msg);
12508 }
12509 EXPORT_SYMBOL(cfg80211_probe_status);
12510
12511 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
12512                                  const u8 *frame, size_t len,
12513                                  int freq, int sig_dbm)
12514 {
12515         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12516         struct sk_buff *msg;
12517         void *hdr;
12518         struct cfg80211_beacon_registration *reg;
12519
12520         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
12521
12522         spin_lock_bh(&rdev->beacon_registrations_lock);
12523         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12524                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
12525                 if (!msg) {
12526                         spin_unlock_bh(&rdev->beacon_registrations_lock);
12527                         return;
12528                 }
12529
12530                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
12531                 if (!hdr)
12532                         goto nla_put_failure;
12533
12534                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12535                     (freq &&
12536                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
12537                     (sig_dbm &&
12538                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
12539                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
12540                         goto nla_put_failure;
12541
12542                 genlmsg_end(msg, hdr);
12543
12544                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
12545         }
12546         spin_unlock_bh(&rdev->beacon_registrations_lock);
12547         return;
12548
12549  nla_put_failure:
12550         spin_unlock_bh(&rdev->beacon_registrations_lock);
12551         if (hdr)
12552                 genlmsg_cancel(msg, hdr);
12553         nlmsg_free(msg);
12554 }
12555 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
12556
12557 #ifdef CONFIG_PM
12558 static int cfg80211_net_detect_results(struct sk_buff *msg,
12559                                        struct cfg80211_wowlan_wakeup *wakeup)
12560 {
12561         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
12562         struct nlattr *nl_results, *nl_match, *nl_freqs;
12563         int i, j;
12564
12565         nl_results = nla_nest_start(
12566                 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
12567         if (!nl_results)
12568                 return -EMSGSIZE;
12569
12570         for (i = 0; i < nd->n_matches; i++) {
12571                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
12572
12573                 nl_match = nla_nest_start(msg, i);
12574                 if (!nl_match)
12575                         break;
12576
12577                 /* The SSID attribute is optional in nl80211, but for
12578                  * simplicity reasons it's always present in the
12579                  * cfg80211 structure.  If a driver can't pass the
12580                  * SSID, that needs to be changed.  A zero length SSID
12581                  * is still a valid SSID (wildcard), so it cannot be
12582                  * used for this purpose.
12583                  */
12584                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
12585                             match->ssid.ssid)) {
12586                         nla_nest_cancel(msg, nl_match);
12587                         goto out;
12588                 }
12589
12590                 if (match->n_channels) {
12591                         nl_freqs = nla_nest_start(
12592                                 msg, NL80211_ATTR_SCAN_FREQUENCIES);
12593                         if (!nl_freqs) {
12594                                 nla_nest_cancel(msg, nl_match);
12595                                 goto out;
12596                         }
12597
12598                         for (j = 0; j < match->n_channels; j++) {
12599                                 if (nla_put_u32(msg, j, match->channels[j])) {
12600                                         nla_nest_cancel(msg, nl_freqs);
12601                                         nla_nest_cancel(msg, nl_match);
12602                                         goto out;
12603                                 }
12604                         }
12605
12606                         nla_nest_end(msg, nl_freqs);
12607                 }
12608
12609                 nla_nest_end(msg, nl_match);
12610         }
12611
12612 out:
12613         nla_nest_end(msg, nl_results);
12614         return 0;
12615 }
12616
12617 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
12618                                    struct cfg80211_wowlan_wakeup *wakeup,
12619                                    gfp_t gfp)
12620 {
12621         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12622         struct sk_buff *msg;
12623         void *hdr;
12624         int size = 200;
12625
12626         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
12627
12628         if (wakeup)
12629                 size += wakeup->packet_present_len;
12630
12631         msg = nlmsg_new(size, gfp);
12632         if (!msg)
12633                 return;
12634
12635         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
12636         if (!hdr)
12637                 goto free_msg;
12638
12639         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12640             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12641                 goto free_msg;
12642
12643         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12644                                         wdev->netdev->ifindex))
12645                 goto free_msg;
12646
12647         if (wakeup) {
12648                 struct nlattr *reasons;
12649
12650                 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
12651                 if (!reasons)
12652                         goto free_msg;
12653
12654                 if (wakeup->disconnect &&
12655                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
12656                         goto free_msg;
12657                 if (wakeup->magic_pkt &&
12658                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
12659                         goto free_msg;
12660                 if (wakeup->gtk_rekey_failure &&
12661                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
12662                         goto free_msg;
12663                 if (wakeup->eap_identity_req &&
12664                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
12665                         goto free_msg;
12666                 if (wakeup->four_way_handshake &&
12667                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
12668                         goto free_msg;
12669                 if (wakeup->rfkill_release &&
12670                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
12671                         goto free_msg;
12672
12673                 if (wakeup->pattern_idx >= 0 &&
12674                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
12675                                 wakeup->pattern_idx))
12676                         goto free_msg;
12677
12678                 if (wakeup->tcp_match &&
12679                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
12680                         goto free_msg;
12681
12682                 if (wakeup->tcp_connlost &&
12683                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
12684                         goto free_msg;
12685
12686                 if (wakeup->tcp_nomoretokens &&
12687                     nla_put_flag(msg,
12688                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
12689                         goto free_msg;
12690
12691                 if (wakeup->packet) {
12692                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
12693                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
12694
12695                         if (!wakeup->packet_80211) {
12696                                 pkt_attr =
12697                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
12698                                 len_attr =
12699                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
12700                         }
12701
12702                         if (wakeup->packet_len &&
12703                             nla_put_u32(msg, len_attr, wakeup->packet_len))
12704                                 goto free_msg;
12705
12706                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
12707                                     wakeup->packet))
12708                                 goto free_msg;
12709                 }
12710
12711                 if (wakeup->net_detect &&
12712                     cfg80211_net_detect_results(msg, wakeup))
12713                                 goto free_msg;
12714
12715                 nla_nest_end(msg, reasons);
12716         }
12717
12718         genlmsg_end(msg, hdr);
12719
12720         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12721                                 NL80211_MCGRP_MLME, gfp);
12722         return;
12723
12724  free_msg:
12725         nlmsg_free(msg);
12726 }
12727 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
12728 #endif
12729
12730 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
12731                                 enum nl80211_tdls_operation oper,
12732                                 u16 reason_code, gfp_t gfp)
12733 {
12734         struct wireless_dev *wdev = dev->ieee80211_ptr;
12735         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
12736         struct sk_buff *msg;
12737         void *hdr;
12738
12739         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
12740                                          reason_code);
12741
12742         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12743         if (!msg)
12744                 return;
12745
12746         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
12747         if (!hdr) {
12748                 nlmsg_free(msg);
12749                 return;
12750         }
12751
12752         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12753             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
12754             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
12755             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
12756             (reason_code > 0 &&
12757              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
12758                 goto nla_put_failure;
12759
12760         genlmsg_end(msg, hdr);
12761
12762         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12763                                 NL80211_MCGRP_MLME, gfp);
12764         return;
12765
12766  nla_put_failure:
12767         genlmsg_cancel(msg, hdr);
12768         nlmsg_free(msg);
12769 }
12770 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
12771
12772 static int nl80211_netlink_notify(struct notifier_block * nb,
12773                                   unsigned long state,
12774                                   void *_notify)
12775 {
12776         struct netlink_notify *notify = _notify;
12777         struct cfg80211_registered_device *rdev;
12778         struct wireless_dev *wdev;
12779         struct cfg80211_beacon_registration *reg, *tmp;
12780
12781         if (state != NETLINK_URELEASE)
12782                 return NOTIFY_DONE;
12783
12784         rcu_read_lock();
12785
12786         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
12787                 bool schedule_destroy_work = false;
12788                 bool schedule_scan_stop = false;
12789                 struct cfg80211_sched_scan_request *sched_scan_req =
12790                         rcu_dereference(rdev->sched_scan_req);
12791
12792                 if (sched_scan_req && notify->portid &&
12793                     sched_scan_req->owner_nlportid == notify->portid)
12794                         schedule_scan_stop = true;
12795
12796                 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) {
12797                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
12798
12799                         if (wdev->owner_nlportid == notify->portid)
12800                                 schedule_destroy_work = true;
12801                 }
12802
12803                 spin_lock_bh(&rdev->beacon_registrations_lock);
12804                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
12805                                          list) {
12806                         if (reg->nlportid == notify->portid) {
12807                                 list_del(&reg->list);
12808                                 kfree(reg);
12809                                 break;
12810                         }
12811                 }
12812                 spin_unlock_bh(&rdev->beacon_registrations_lock);
12813
12814                 if (schedule_destroy_work) {
12815                         struct cfg80211_iface_destroy *destroy;
12816
12817                         destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC);
12818                         if (destroy) {
12819                                 destroy->nlportid = notify->portid;
12820                                 spin_lock(&rdev->destroy_list_lock);
12821                                 list_add(&destroy->list, &rdev->destroy_list);
12822                                 spin_unlock(&rdev->destroy_list_lock);
12823                                 schedule_work(&rdev->destroy_work);
12824                         }
12825                 } else if (schedule_scan_stop) {
12826                         sched_scan_req->owner_nlportid = 0;
12827
12828                         if (rdev->ops->sched_scan_stop &&
12829                             rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
12830                                 schedule_work(&rdev->sched_scan_stop_wk);
12831                 }
12832         }
12833
12834         rcu_read_unlock();
12835
12836         /*
12837          * It is possible that the user space process that is controlling the
12838          * indoor setting disappeared, so notify the regulatory core.
12839          */
12840         regulatory_netlink_notify(notify->portid);
12841         return NOTIFY_OK;
12842 }
12843
12844 static struct notifier_block nl80211_netlink_notifier = {
12845         .notifier_call = nl80211_netlink_notify,
12846 };
12847
12848 void cfg80211_ft_event(struct net_device *netdev,
12849                        struct cfg80211_ft_event_params *ft_event)
12850 {
12851         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
12852         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12853         struct sk_buff *msg;
12854         void *hdr;
12855
12856         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
12857
12858         if (!ft_event->target_ap)
12859                 return;
12860
12861         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12862         if (!msg)
12863                 return;
12864
12865         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
12866         if (!hdr)
12867                 goto out;
12868
12869         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12870             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
12871             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
12872                 goto out;
12873
12874         if (ft_event->ies &&
12875             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
12876                 goto out;
12877         if (ft_event->ric_ies &&
12878             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
12879                     ft_event->ric_ies))
12880                 goto out;
12881
12882         genlmsg_end(msg, hdr);
12883
12884         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
12885                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12886         return;
12887  out:
12888         nlmsg_free(msg);
12889 }
12890 EXPORT_SYMBOL(cfg80211_ft_event);
12891
12892 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
12893 {
12894         struct cfg80211_registered_device *rdev;
12895         struct sk_buff *msg;
12896         void *hdr;
12897         u32 nlportid;
12898
12899         rdev = wiphy_to_rdev(wdev->wiphy);
12900         if (!rdev->crit_proto_nlportid)
12901                 return;
12902
12903         nlportid = rdev->crit_proto_nlportid;
12904         rdev->crit_proto_nlportid = 0;
12905
12906         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12907         if (!msg)
12908                 return;
12909
12910         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
12911         if (!hdr)
12912                 goto nla_put_failure;
12913
12914         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12915             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12916                 goto nla_put_failure;
12917
12918         genlmsg_end(msg, hdr);
12919
12920         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
12921         return;
12922
12923  nla_put_failure:
12924         if (hdr)
12925                 genlmsg_cancel(msg, hdr);
12926         nlmsg_free(msg);
12927
12928 }
12929 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
12930
12931 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
12932 {
12933         struct wiphy *wiphy = wdev->wiphy;
12934         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12935         struct sk_buff *msg;
12936         void *hdr;
12937
12938         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12939         if (!msg)
12940                 return;
12941
12942         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
12943         if (!hdr)
12944                 goto out;
12945
12946         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12947             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
12948             nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)))
12949                 goto out;
12950
12951         genlmsg_end(msg, hdr);
12952
12953         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
12954                                 NL80211_MCGRP_MLME, GFP_KERNEL);
12955         return;
12956  out:
12957         nlmsg_free(msg);
12958 }
12959
12960 /* initialisation/exit functions */
12961
12962 int nl80211_init(void)
12963 {
12964         int err;
12965
12966         err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops,
12967                                                    nl80211_mcgrps);
12968         if (err)
12969                 return err;
12970
12971         err = netlink_register_notifier(&nl80211_netlink_notifier);
12972         if (err)
12973                 goto err_out;
12974
12975         return 0;
12976  err_out:
12977         genl_unregister_family(&nl80211_fam);
12978         return err;
12979 }
12980
12981 void nl80211_exit(void)
12982 {
12983         netlink_unregister_notifier(&nl80211_netlink_notifier);
12984         genl_unregister_family(&nl80211_fam);
12985 }