1 /* 2 * This is the new netlink-based wireless configuration interface. 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 */ 6 7 #include <linux/if.h> 8 #include <linux/module.h> 9 #include <linux/err.h> 10 #include <linux/slab.h> 11 #include <linux/list.h> 12 #include <linux/if_ether.h> 13 #include <linux/ieee80211.h> 14 #include <linux/nl80211.h> 15 #include <linux/rtnetlink.h> 16 #include <linux/netlink.h> 17 #include <linux/etherdevice.h> 18 #include <net/net_namespace.h> 19 #include <net/genetlink.h> 20 #include <net/cfg80211.h> 21 #include <net/sock.h> 22 #include <net/inet_connection_sock.h> 23 #include "core.h" 24 #include "nl80211.h" 25 #include "reg.h" 26 #include "rdev-ops.h" 27 28 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 29 struct genl_info *info, 30 struct cfg80211_crypto_settings *settings, 31 int cipher_limit); 32 33 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 34 struct genl_info *info); 35 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 36 struct genl_info *info); 37 38 /* the netlink family */ 39 static struct genl_family nl80211_fam = { 40 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 41 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 42 .hdrsize = 0, /* no private header */ 43 .version = 1, /* no particular meaning now */ 44 .maxattr = NL80211_ATTR_MAX, 45 .netnsok = true, 46 .pre_doit = nl80211_pre_doit, 47 .post_doit = nl80211_post_doit, 48 }; 49 50 /* multicast groups */ 51 enum nl80211_multicast_groups { 52 NL80211_MCGRP_CONFIG, 53 NL80211_MCGRP_SCAN, 54 NL80211_MCGRP_REGULATORY, 55 NL80211_MCGRP_MLME, 56 NL80211_MCGRP_VENDOR, 57 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 58 }; 59 60 static const struct genl_multicast_group nl80211_mcgrps[] = { 61 [NL80211_MCGRP_CONFIG] = { .name = "config", }, 62 [NL80211_MCGRP_SCAN] = { .name = "scan", }, 63 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", }, 64 [NL80211_MCGRP_MLME] = { .name = "mlme", }, 65 [NL80211_MCGRP_VENDOR] = { .name = "vendor", }, 66 #ifdef CONFIG_NL80211_TESTMODE 67 [NL80211_MCGRP_TESTMODE] = { .name = "testmode", } 68 #endif 69 }; 70 71 /* returns ERR_PTR values */ 72 static struct wireless_dev * 73 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 74 { 75 struct cfg80211_registered_device *rdev; 76 struct wireless_dev *result = NULL; 77 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 78 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 79 u64 wdev_id; 80 int wiphy_idx = -1; 81 int ifidx = -1; 82 83 ASSERT_RTNL(); 84 85 if (!have_ifidx && !have_wdev_id) 86 return ERR_PTR(-EINVAL); 87 88 if (have_ifidx) 89 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 90 if (have_wdev_id) { 91 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 92 wiphy_idx = wdev_id >> 32; 93 } 94 95 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 96 struct wireless_dev *wdev; 97 98 if (wiphy_net(&rdev->wiphy) != netns) 99 continue; 100 101 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 102 continue; 103 104 list_for_each_entry(wdev, &rdev->wdev_list, list) { 105 if (have_ifidx && wdev->netdev && 106 wdev->netdev->ifindex == ifidx) { 107 result = wdev; 108 break; 109 } 110 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 111 result = wdev; 112 break; 113 } 114 } 115 116 if (result) 117 break; 118 } 119 120 if (result) 121 return result; 122 return ERR_PTR(-ENODEV); 123 } 124 125 static struct cfg80211_registered_device * 126 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 127 { 128 struct cfg80211_registered_device *rdev = NULL, *tmp; 129 struct net_device *netdev; 130 131 ASSERT_RTNL(); 132 133 if (!attrs[NL80211_ATTR_WIPHY] && 134 !attrs[NL80211_ATTR_IFINDEX] && 135 !attrs[NL80211_ATTR_WDEV]) 136 return ERR_PTR(-EINVAL); 137 138 if (attrs[NL80211_ATTR_WIPHY]) 139 rdev = cfg80211_rdev_by_wiphy_idx( 140 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 141 142 if (attrs[NL80211_ATTR_WDEV]) { 143 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 144 struct wireless_dev *wdev; 145 bool found = false; 146 147 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 148 if (tmp) { 149 /* make sure wdev exists */ 150 list_for_each_entry(wdev, &tmp->wdev_list, list) { 151 if (wdev->identifier != (u32)wdev_id) 152 continue; 153 found = true; 154 break; 155 } 156 157 if (!found) 158 tmp = NULL; 159 160 if (rdev && tmp != rdev) 161 return ERR_PTR(-EINVAL); 162 rdev = tmp; 163 } 164 } 165 166 if (attrs[NL80211_ATTR_IFINDEX]) { 167 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 168 netdev = __dev_get_by_index(netns, ifindex); 169 if (netdev) { 170 if (netdev->ieee80211_ptr) 171 tmp = wiphy_to_dev( 172 netdev->ieee80211_ptr->wiphy); 173 else 174 tmp = NULL; 175 176 /* not wireless device -- return error */ 177 if (!tmp) 178 return ERR_PTR(-EINVAL); 179 180 /* mismatch -- return error */ 181 if (rdev && tmp != rdev) 182 return ERR_PTR(-EINVAL); 183 184 rdev = tmp; 185 } 186 } 187 188 if (!rdev) 189 return ERR_PTR(-ENODEV); 190 191 if (netns != wiphy_net(&rdev->wiphy)) 192 return ERR_PTR(-ENODEV); 193 194 return rdev; 195 } 196 197 /* 198 * This function returns a pointer to the driver 199 * that the genl_info item that is passed refers to. 200 * 201 * The result of this can be a PTR_ERR and hence must 202 * be checked with IS_ERR() for errors. 203 */ 204 static struct cfg80211_registered_device * 205 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 206 { 207 return __cfg80211_rdev_from_attrs(netns, info->attrs); 208 } 209 210 /* policy for the attributes */ 211 static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { 212 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 213 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 214 .len = 20-1 }, 215 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 216 217 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 218 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 219 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 220 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 221 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 222 223 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 224 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 225 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 226 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 227 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 228 229 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 230 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 231 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 232 233 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 234 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 235 236 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 237 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 238 .len = WLAN_MAX_KEY_LEN }, 239 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 240 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 241 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 242 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 243 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 244 245 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 246 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 247 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 248 .len = IEEE80211_MAX_DATA_LEN }, 249 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 250 .len = IEEE80211_MAX_DATA_LEN }, 251 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 252 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 253 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 254 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 255 .len = NL80211_MAX_SUPP_RATES }, 256 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 257 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 258 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 259 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 260 .len = IEEE80211_MAX_MESH_ID_LEN }, 261 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 262 263 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 264 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 265 266 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 267 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 268 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 269 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 270 .len = NL80211_MAX_SUPP_RATES }, 271 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 272 273 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 274 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 275 276 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 277 278 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 279 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 280 .len = IEEE80211_MAX_DATA_LEN }, 281 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 282 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 283 284 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 285 .len = IEEE80211_MAX_SSID_LEN }, 286 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 287 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 288 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 289 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 290 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 291 [NL80211_ATTR_STA_FLAGS2] = { 292 .len = sizeof(struct nl80211_sta_flag_update), 293 }, 294 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 295 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 296 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 297 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 298 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 299 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 300 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 301 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 302 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 303 .len = WLAN_PMKID_LEN }, 304 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 305 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 306 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 307 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 308 .len = IEEE80211_MAX_DATA_LEN }, 309 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 310 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 311 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 312 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 313 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 314 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 315 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 316 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 317 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 318 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 319 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 320 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 321 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 322 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 323 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 324 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 325 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 326 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 327 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 328 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 329 .len = IEEE80211_MAX_DATA_LEN }, 330 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 331 .len = IEEE80211_MAX_DATA_LEN }, 332 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 333 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 334 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 335 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 336 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 337 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 338 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 339 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 340 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 341 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 342 .len = IEEE80211_MAX_DATA_LEN }, 343 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 344 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 345 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 346 .len = NL80211_HT_CAPABILITY_LEN 347 }, 348 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 349 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 350 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 351 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 352 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 353 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 354 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 355 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 356 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 357 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 358 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 359 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 360 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 361 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 362 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 363 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 364 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 365 .len = NL80211_VHT_CAPABILITY_LEN, 366 }, 367 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 368 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 369 .len = IEEE80211_MAX_DATA_LEN }, 370 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 371 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 372 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 373 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 374 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 }, 375 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 }, 376 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 377 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 378 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 379 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 380 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 381 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 382 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 383 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 384 .len = IEEE80211_QOS_MAP_LEN_MAX }, 385 }; 386 387 /* policy for the key attributes */ 388 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 389 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 390 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 391 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 392 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 393 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 394 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 395 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 396 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 397 }; 398 399 /* policy for the key default flags */ 400 static const struct nla_policy 401 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 402 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 403 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 404 }; 405 406 /* policy for WoWLAN attributes */ 407 static const struct nla_policy 408 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 409 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 410 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 411 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 412 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 413 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 414 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 415 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 416 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 417 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 418 }; 419 420 static const struct nla_policy 421 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 422 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 423 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 424 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 425 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 426 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 427 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 428 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 429 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 430 }, 431 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 432 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 433 }, 434 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 435 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 436 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 437 }; 438 439 /* policy for coalesce rule attributes */ 440 static const struct nla_policy 441 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 442 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 443 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 444 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 445 }; 446 447 /* policy for GTK rekey offload attributes */ 448 static const struct nla_policy 449 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 450 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 451 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 452 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 453 }; 454 455 static const struct nla_policy 456 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 457 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 458 .len = IEEE80211_MAX_SSID_LEN }, 459 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 460 }; 461 462 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 463 struct netlink_callback *cb, 464 struct cfg80211_registered_device **rdev, 465 struct wireless_dev **wdev) 466 { 467 int err; 468 469 rtnl_lock(); 470 471 if (!cb->args[0]) { 472 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 473 nl80211_fam.attrbuf, nl80211_fam.maxattr, 474 nl80211_policy); 475 if (err) 476 goto out_unlock; 477 478 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 479 nl80211_fam.attrbuf); 480 if (IS_ERR(*wdev)) { 481 err = PTR_ERR(*wdev); 482 goto out_unlock; 483 } 484 *rdev = wiphy_to_dev((*wdev)->wiphy); 485 /* 0 is the first index - add 1 to parse only once */ 486 cb->args[0] = (*rdev)->wiphy_idx + 1; 487 cb->args[1] = (*wdev)->identifier; 488 } else { 489 /* subtract the 1 again here */ 490 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 491 struct wireless_dev *tmp; 492 493 if (!wiphy) { 494 err = -ENODEV; 495 goto out_unlock; 496 } 497 *rdev = wiphy_to_dev(wiphy); 498 *wdev = NULL; 499 500 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 501 if (tmp->identifier == cb->args[1]) { 502 *wdev = tmp; 503 break; 504 } 505 } 506 507 if (!*wdev) { 508 err = -ENODEV; 509 goto out_unlock; 510 } 511 } 512 513 return 0; 514 out_unlock: 515 rtnl_unlock(); 516 return err; 517 } 518 519 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 520 { 521 rtnl_unlock(); 522 } 523 524 /* IE validation */ 525 static bool is_valid_ie_attr(const struct nlattr *attr) 526 { 527 const u8 *pos; 528 int len; 529 530 if (!attr) 531 return true; 532 533 pos = nla_data(attr); 534 len = nla_len(attr); 535 536 while (len) { 537 u8 elemlen; 538 539 if (len < 2) 540 return false; 541 len -= 2; 542 543 elemlen = pos[1]; 544 if (elemlen > len) 545 return false; 546 547 len -= elemlen; 548 pos += 2 + elemlen; 549 } 550 551 return true; 552 } 553 554 /* message building helper */ 555 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 556 int flags, u8 cmd) 557 { 558 /* since there is no private header just add the generic one */ 559 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 560 } 561 562 static int nl80211_msg_put_channel(struct sk_buff *msg, 563 struct ieee80211_channel *chan, 564 bool large) 565 { 566 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 567 chan->center_freq)) 568 goto nla_put_failure; 569 570 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 571 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 572 goto nla_put_failure; 573 if (chan->flags & IEEE80211_CHAN_NO_IR) { 574 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 575 goto nla_put_failure; 576 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 577 goto nla_put_failure; 578 } 579 if (chan->flags & IEEE80211_CHAN_RADAR) { 580 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 581 goto nla_put_failure; 582 if (large) { 583 u32 time; 584 585 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 586 587 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 588 chan->dfs_state)) 589 goto nla_put_failure; 590 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 591 time)) 592 goto nla_put_failure; 593 } 594 } 595 596 if (large) { 597 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 598 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 599 goto nla_put_failure; 600 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 601 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 602 goto nla_put_failure; 603 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 604 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 605 goto nla_put_failure; 606 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 607 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 608 goto nla_put_failure; 609 } 610 611 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 612 DBM_TO_MBM(chan->max_power))) 613 goto nla_put_failure; 614 615 return 0; 616 617 nla_put_failure: 618 return -ENOBUFS; 619 } 620 621 /* netlink command implementations */ 622 623 struct key_parse { 624 struct key_params p; 625 int idx; 626 int type; 627 bool def, defmgmt; 628 bool def_uni, def_multi; 629 }; 630 631 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 632 { 633 struct nlattr *tb[NL80211_KEY_MAX + 1]; 634 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 635 nl80211_key_policy); 636 if (err) 637 return err; 638 639 k->def = !!tb[NL80211_KEY_DEFAULT]; 640 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 641 642 if (k->def) { 643 k->def_uni = true; 644 k->def_multi = true; 645 } 646 if (k->defmgmt) 647 k->def_multi = true; 648 649 if (tb[NL80211_KEY_IDX]) 650 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 651 652 if (tb[NL80211_KEY_DATA]) { 653 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 654 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 655 } 656 657 if (tb[NL80211_KEY_SEQ]) { 658 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 659 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 660 } 661 662 if (tb[NL80211_KEY_CIPHER]) 663 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 664 665 if (tb[NL80211_KEY_TYPE]) { 666 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 667 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 668 return -EINVAL; 669 } 670 671 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 672 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 673 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 674 tb[NL80211_KEY_DEFAULT_TYPES], 675 nl80211_key_default_policy); 676 if (err) 677 return err; 678 679 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 680 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 681 } 682 683 return 0; 684 } 685 686 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 687 { 688 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 689 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 690 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 691 } 692 693 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 694 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 695 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 696 } 697 698 if (info->attrs[NL80211_ATTR_KEY_IDX]) 699 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 700 701 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 702 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 703 704 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 705 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 706 707 if (k->def) { 708 k->def_uni = true; 709 k->def_multi = true; 710 } 711 if (k->defmgmt) 712 k->def_multi = true; 713 714 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 715 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 716 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 717 return -EINVAL; 718 } 719 720 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 721 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 722 int err = nla_parse_nested( 723 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 724 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 725 nl80211_key_default_policy); 726 if (err) 727 return err; 728 729 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 730 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 731 } 732 733 return 0; 734 } 735 736 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 737 { 738 int err; 739 740 memset(k, 0, sizeof(*k)); 741 k->idx = -1; 742 k->type = -1; 743 744 if (info->attrs[NL80211_ATTR_KEY]) 745 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 746 else 747 err = nl80211_parse_key_old(info, k); 748 749 if (err) 750 return err; 751 752 if (k->def && k->defmgmt) 753 return -EINVAL; 754 755 if (k->defmgmt) { 756 if (k->def_uni || !k->def_multi) 757 return -EINVAL; 758 } 759 760 if (k->idx != -1) { 761 if (k->defmgmt) { 762 if (k->idx < 4 || k->idx > 5) 763 return -EINVAL; 764 } else if (k->def) { 765 if (k->idx < 0 || k->idx > 3) 766 return -EINVAL; 767 } else { 768 if (k->idx < 0 || k->idx > 5) 769 return -EINVAL; 770 } 771 } 772 773 return 0; 774 } 775 776 static struct cfg80211_cached_keys * 777 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 778 struct nlattr *keys, bool *no_ht) 779 { 780 struct key_parse parse; 781 struct nlattr *key; 782 struct cfg80211_cached_keys *result; 783 int rem, err, def = 0; 784 785 result = kzalloc(sizeof(*result), GFP_KERNEL); 786 if (!result) 787 return ERR_PTR(-ENOMEM); 788 789 result->def = -1; 790 result->defmgmt = -1; 791 792 nla_for_each_nested(key, keys, rem) { 793 memset(&parse, 0, sizeof(parse)); 794 parse.idx = -1; 795 796 err = nl80211_parse_key_new(key, &parse); 797 if (err) 798 goto error; 799 err = -EINVAL; 800 if (!parse.p.key) 801 goto error; 802 if (parse.idx < 0 || parse.idx > 4) 803 goto error; 804 if (parse.def) { 805 if (def) 806 goto error; 807 def = 1; 808 result->def = parse.idx; 809 if (!parse.def_uni || !parse.def_multi) 810 goto error; 811 } else if (parse.defmgmt) 812 goto error; 813 err = cfg80211_validate_key_settings(rdev, &parse.p, 814 parse.idx, false, NULL); 815 if (err) 816 goto error; 817 result->params[parse.idx].cipher = parse.p.cipher; 818 result->params[parse.idx].key_len = parse.p.key_len; 819 result->params[parse.idx].key = result->data[parse.idx]; 820 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 821 822 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 823 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 824 if (no_ht) 825 *no_ht = true; 826 } 827 } 828 829 return result; 830 error: 831 kfree(result); 832 return ERR_PTR(err); 833 } 834 835 static int nl80211_key_allowed(struct wireless_dev *wdev) 836 { 837 ASSERT_WDEV_LOCK(wdev); 838 839 switch (wdev->iftype) { 840 case NL80211_IFTYPE_AP: 841 case NL80211_IFTYPE_AP_VLAN: 842 case NL80211_IFTYPE_P2P_GO: 843 case NL80211_IFTYPE_MESH_POINT: 844 break; 845 case NL80211_IFTYPE_ADHOC: 846 case NL80211_IFTYPE_STATION: 847 case NL80211_IFTYPE_P2P_CLIENT: 848 if (!wdev->current_bss) 849 return -ENOLINK; 850 break; 851 default: 852 return -EINVAL; 853 } 854 855 return 0; 856 } 857 858 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 859 { 860 struct nlattr *nl_modes = nla_nest_start(msg, attr); 861 int i; 862 863 if (!nl_modes) 864 goto nla_put_failure; 865 866 i = 0; 867 while (ifmodes) { 868 if ((ifmodes & 1) && nla_put_flag(msg, i)) 869 goto nla_put_failure; 870 ifmodes >>= 1; 871 i++; 872 } 873 874 nla_nest_end(msg, nl_modes); 875 return 0; 876 877 nla_put_failure: 878 return -ENOBUFS; 879 } 880 881 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 882 struct sk_buff *msg, 883 bool large) 884 { 885 struct nlattr *nl_combis; 886 int i, j; 887 888 nl_combis = nla_nest_start(msg, 889 NL80211_ATTR_INTERFACE_COMBINATIONS); 890 if (!nl_combis) 891 goto nla_put_failure; 892 893 for (i = 0; i < wiphy->n_iface_combinations; i++) { 894 const struct ieee80211_iface_combination *c; 895 struct nlattr *nl_combi, *nl_limits; 896 897 c = &wiphy->iface_combinations[i]; 898 899 nl_combi = nla_nest_start(msg, i + 1); 900 if (!nl_combi) 901 goto nla_put_failure; 902 903 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 904 if (!nl_limits) 905 goto nla_put_failure; 906 907 for (j = 0; j < c->n_limits; j++) { 908 struct nlattr *nl_limit; 909 910 nl_limit = nla_nest_start(msg, j + 1); 911 if (!nl_limit) 912 goto nla_put_failure; 913 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 914 c->limits[j].max)) 915 goto nla_put_failure; 916 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 917 c->limits[j].types)) 918 goto nla_put_failure; 919 nla_nest_end(msg, nl_limit); 920 } 921 922 nla_nest_end(msg, nl_limits); 923 924 if (c->beacon_int_infra_match && 925 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 926 goto nla_put_failure; 927 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 928 c->num_different_channels) || 929 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 930 c->max_interfaces)) 931 goto nla_put_failure; 932 if (large && 933 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 934 c->radar_detect_widths)) 935 goto nla_put_failure; 936 937 nla_nest_end(msg, nl_combi); 938 } 939 940 nla_nest_end(msg, nl_combis); 941 942 return 0; 943 nla_put_failure: 944 return -ENOBUFS; 945 } 946 947 #ifdef CONFIG_PM 948 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 949 struct sk_buff *msg) 950 { 951 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 952 struct nlattr *nl_tcp; 953 954 if (!tcp) 955 return 0; 956 957 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 958 if (!nl_tcp) 959 return -ENOBUFS; 960 961 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 962 tcp->data_payload_max)) 963 return -ENOBUFS; 964 965 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 966 tcp->data_payload_max)) 967 return -ENOBUFS; 968 969 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 970 return -ENOBUFS; 971 972 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 973 sizeof(*tcp->tok), tcp->tok)) 974 return -ENOBUFS; 975 976 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 977 tcp->data_interval_max)) 978 return -ENOBUFS; 979 980 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 981 tcp->wake_payload_max)) 982 return -ENOBUFS; 983 984 nla_nest_end(msg, nl_tcp); 985 return 0; 986 } 987 988 static int nl80211_send_wowlan(struct sk_buff *msg, 989 struct cfg80211_registered_device *dev, 990 bool large) 991 { 992 struct nlattr *nl_wowlan; 993 994 if (!dev->wiphy.wowlan) 995 return 0; 996 997 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 998 if (!nl_wowlan) 999 return -ENOBUFS; 1000 1001 if (((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1002 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1003 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1004 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1005 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1006 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1007 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1008 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1009 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1010 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1011 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1012 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1013 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1014 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1015 ((dev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1016 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1017 return -ENOBUFS; 1018 1019 if (dev->wiphy.wowlan->n_patterns) { 1020 struct nl80211_pattern_support pat = { 1021 .max_patterns = dev->wiphy.wowlan->n_patterns, 1022 .min_pattern_len = dev->wiphy.wowlan->pattern_min_len, 1023 .max_pattern_len = dev->wiphy.wowlan->pattern_max_len, 1024 .max_pkt_offset = dev->wiphy.wowlan->max_pkt_offset, 1025 }; 1026 1027 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1028 sizeof(pat), &pat)) 1029 return -ENOBUFS; 1030 } 1031 1032 if (large && nl80211_send_wowlan_tcp_caps(dev, msg)) 1033 return -ENOBUFS; 1034 1035 nla_nest_end(msg, nl_wowlan); 1036 1037 return 0; 1038 } 1039 #endif 1040 1041 static int nl80211_send_coalesce(struct sk_buff *msg, 1042 struct cfg80211_registered_device *dev) 1043 { 1044 struct nl80211_coalesce_rule_support rule; 1045 1046 if (!dev->wiphy.coalesce) 1047 return 0; 1048 1049 rule.max_rules = dev->wiphy.coalesce->n_rules; 1050 rule.max_delay = dev->wiphy.coalesce->max_delay; 1051 rule.pat.max_patterns = dev->wiphy.coalesce->n_patterns; 1052 rule.pat.min_pattern_len = dev->wiphy.coalesce->pattern_min_len; 1053 rule.pat.max_pattern_len = dev->wiphy.coalesce->pattern_max_len; 1054 rule.pat.max_pkt_offset = dev->wiphy.coalesce->max_pkt_offset; 1055 1056 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1057 return -ENOBUFS; 1058 1059 return 0; 1060 } 1061 1062 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1063 struct ieee80211_supported_band *sband) 1064 { 1065 struct nlattr *nl_rates, *nl_rate; 1066 struct ieee80211_rate *rate; 1067 int i; 1068 1069 /* add HT info */ 1070 if (sband->ht_cap.ht_supported && 1071 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1072 sizeof(sband->ht_cap.mcs), 1073 &sband->ht_cap.mcs) || 1074 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1075 sband->ht_cap.cap) || 1076 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1077 sband->ht_cap.ampdu_factor) || 1078 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1079 sband->ht_cap.ampdu_density))) 1080 return -ENOBUFS; 1081 1082 /* add VHT info */ 1083 if (sband->vht_cap.vht_supported && 1084 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1085 sizeof(sband->vht_cap.vht_mcs), 1086 &sband->vht_cap.vht_mcs) || 1087 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1088 sband->vht_cap.cap))) 1089 return -ENOBUFS; 1090 1091 /* add bitrates */ 1092 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1093 if (!nl_rates) 1094 return -ENOBUFS; 1095 1096 for (i = 0; i < sband->n_bitrates; i++) { 1097 nl_rate = nla_nest_start(msg, i); 1098 if (!nl_rate) 1099 return -ENOBUFS; 1100 1101 rate = &sband->bitrates[i]; 1102 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1103 rate->bitrate)) 1104 return -ENOBUFS; 1105 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1106 nla_put_flag(msg, 1107 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1108 return -ENOBUFS; 1109 1110 nla_nest_end(msg, nl_rate); 1111 } 1112 1113 nla_nest_end(msg, nl_rates); 1114 1115 return 0; 1116 } 1117 1118 static int 1119 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1120 const struct ieee80211_txrx_stypes *mgmt_stypes) 1121 { 1122 u16 stypes; 1123 struct nlattr *nl_ftypes, *nl_ifs; 1124 enum nl80211_iftype ift; 1125 int i; 1126 1127 if (!mgmt_stypes) 1128 return 0; 1129 1130 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1131 if (!nl_ifs) 1132 return -ENOBUFS; 1133 1134 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1135 nl_ftypes = nla_nest_start(msg, ift); 1136 if (!nl_ftypes) 1137 return -ENOBUFS; 1138 i = 0; 1139 stypes = mgmt_stypes[ift].tx; 1140 while (stypes) { 1141 if ((stypes & 1) && 1142 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1143 (i << 4) | IEEE80211_FTYPE_MGMT)) 1144 return -ENOBUFS; 1145 stypes >>= 1; 1146 i++; 1147 } 1148 nla_nest_end(msg, nl_ftypes); 1149 } 1150 1151 nla_nest_end(msg, nl_ifs); 1152 1153 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1154 if (!nl_ifs) 1155 return -ENOBUFS; 1156 1157 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1158 nl_ftypes = nla_nest_start(msg, ift); 1159 if (!nl_ftypes) 1160 return -ENOBUFS; 1161 i = 0; 1162 stypes = mgmt_stypes[ift].rx; 1163 while (stypes) { 1164 if ((stypes & 1) && 1165 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1166 (i << 4) | IEEE80211_FTYPE_MGMT)) 1167 return -ENOBUFS; 1168 stypes >>= 1; 1169 i++; 1170 } 1171 nla_nest_end(msg, nl_ftypes); 1172 } 1173 nla_nest_end(msg, nl_ifs); 1174 1175 return 0; 1176 } 1177 1178 struct nl80211_dump_wiphy_state { 1179 s64 filter_wiphy; 1180 long start; 1181 long split_start, band_start, chan_start; 1182 bool split; 1183 }; 1184 1185 static int nl80211_send_wiphy(struct cfg80211_registered_device *dev, 1186 struct sk_buff *msg, u32 portid, u32 seq, 1187 int flags, struct nl80211_dump_wiphy_state *state) 1188 { 1189 void *hdr; 1190 struct nlattr *nl_bands, *nl_band; 1191 struct nlattr *nl_freqs, *nl_freq; 1192 struct nlattr *nl_cmds; 1193 enum ieee80211_band band; 1194 struct ieee80211_channel *chan; 1195 int i; 1196 const struct ieee80211_txrx_stypes *mgmt_stypes = 1197 dev->wiphy.mgmt_stypes; 1198 u32 features; 1199 1200 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_WIPHY); 1201 if (!hdr) 1202 return -ENOBUFS; 1203 1204 if (WARN_ON(!state)) 1205 return -EINVAL; 1206 1207 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, dev->wiphy_idx) || 1208 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1209 wiphy_name(&dev->wiphy)) || 1210 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1211 cfg80211_rdev_list_generation)) 1212 goto nla_put_failure; 1213 1214 switch (state->split_start) { 1215 case 0: 1216 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1217 dev->wiphy.retry_short) || 1218 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1219 dev->wiphy.retry_long) || 1220 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1221 dev->wiphy.frag_threshold) || 1222 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1223 dev->wiphy.rts_threshold) || 1224 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1225 dev->wiphy.coverage_class) || 1226 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1227 dev->wiphy.max_scan_ssids) || 1228 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1229 dev->wiphy.max_sched_scan_ssids) || 1230 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1231 dev->wiphy.max_scan_ie_len) || 1232 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1233 dev->wiphy.max_sched_scan_ie_len) || 1234 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1235 dev->wiphy.max_match_sets)) 1236 goto nla_put_failure; 1237 1238 if ((dev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1239 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1240 goto nla_put_failure; 1241 if ((dev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1242 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1243 goto nla_put_failure; 1244 if ((dev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1245 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1246 goto nla_put_failure; 1247 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1248 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1249 goto nla_put_failure; 1250 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1251 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1252 goto nla_put_failure; 1253 if ((dev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1254 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1255 goto nla_put_failure; 1256 state->split_start++; 1257 if (state->split) 1258 break; 1259 case 1: 1260 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1261 sizeof(u32) * dev->wiphy.n_cipher_suites, 1262 dev->wiphy.cipher_suites)) 1263 goto nla_put_failure; 1264 1265 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1266 dev->wiphy.max_num_pmkids)) 1267 goto nla_put_failure; 1268 1269 if ((dev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1270 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1271 goto nla_put_failure; 1272 1273 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1274 dev->wiphy.available_antennas_tx) || 1275 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1276 dev->wiphy.available_antennas_rx)) 1277 goto nla_put_failure; 1278 1279 if ((dev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1280 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1281 dev->wiphy.probe_resp_offload)) 1282 goto nla_put_failure; 1283 1284 if ((dev->wiphy.available_antennas_tx || 1285 dev->wiphy.available_antennas_rx) && 1286 dev->ops->get_antenna) { 1287 u32 tx_ant = 0, rx_ant = 0; 1288 int res; 1289 res = rdev_get_antenna(dev, &tx_ant, &rx_ant); 1290 if (!res) { 1291 if (nla_put_u32(msg, 1292 NL80211_ATTR_WIPHY_ANTENNA_TX, 1293 tx_ant) || 1294 nla_put_u32(msg, 1295 NL80211_ATTR_WIPHY_ANTENNA_RX, 1296 rx_ant)) 1297 goto nla_put_failure; 1298 } 1299 } 1300 1301 state->split_start++; 1302 if (state->split) 1303 break; 1304 case 2: 1305 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1306 dev->wiphy.interface_modes)) 1307 goto nla_put_failure; 1308 state->split_start++; 1309 if (state->split) 1310 break; 1311 case 3: 1312 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1313 if (!nl_bands) 1314 goto nla_put_failure; 1315 1316 for (band = state->band_start; 1317 band < IEEE80211_NUM_BANDS; band++) { 1318 struct ieee80211_supported_band *sband; 1319 1320 sband = dev->wiphy.bands[band]; 1321 1322 if (!sband) 1323 continue; 1324 1325 nl_band = nla_nest_start(msg, band); 1326 if (!nl_band) 1327 goto nla_put_failure; 1328 1329 switch (state->chan_start) { 1330 case 0: 1331 if (nl80211_send_band_rateinfo(msg, sband)) 1332 goto nla_put_failure; 1333 state->chan_start++; 1334 if (state->split) 1335 break; 1336 default: 1337 /* add frequencies */ 1338 nl_freqs = nla_nest_start( 1339 msg, NL80211_BAND_ATTR_FREQS); 1340 if (!nl_freqs) 1341 goto nla_put_failure; 1342 1343 for (i = state->chan_start - 1; 1344 i < sband->n_channels; 1345 i++) { 1346 nl_freq = nla_nest_start(msg, i); 1347 if (!nl_freq) 1348 goto nla_put_failure; 1349 1350 chan = &sband->channels[i]; 1351 1352 if (nl80211_msg_put_channel( 1353 msg, chan, 1354 state->split)) 1355 goto nla_put_failure; 1356 1357 nla_nest_end(msg, nl_freq); 1358 if (state->split) 1359 break; 1360 } 1361 if (i < sband->n_channels) 1362 state->chan_start = i + 2; 1363 else 1364 state->chan_start = 0; 1365 nla_nest_end(msg, nl_freqs); 1366 } 1367 1368 nla_nest_end(msg, nl_band); 1369 1370 if (state->split) { 1371 /* start again here */ 1372 if (state->chan_start) 1373 band--; 1374 break; 1375 } 1376 } 1377 nla_nest_end(msg, nl_bands); 1378 1379 if (band < IEEE80211_NUM_BANDS) 1380 state->band_start = band + 1; 1381 else 1382 state->band_start = 0; 1383 1384 /* if bands & channels are done, continue outside */ 1385 if (state->band_start == 0 && state->chan_start == 0) 1386 state->split_start++; 1387 if (state->split) 1388 break; 1389 case 4: 1390 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1391 if (!nl_cmds) 1392 goto nla_put_failure; 1393 1394 i = 0; 1395 #define CMD(op, n) \ 1396 do { \ 1397 if (dev->ops->op) { \ 1398 i++; \ 1399 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1400 goto nla_put_failure; \ 1401 } \ 1402 } while (0) 1403 1404 CMD(add_virtual_intf, NEW_INTERFACE); 1405 CMD(change_virtual_intf, SET_INTERFACE); 1406 CMD(add_key, NEW_KEY); 1407 CMD(start_ap, START_AP); 1408 CMD(add_station, NEW_STATION); 1409 CMD(add_mpath, NEW_MPATH); 1410 CMD(update_mesh_config, SET_MESH_CONFIG); 1411 CMD(change_bss, SET_BSS); 1412 CMD(auth, AUTHENTICATE); 1413 CMD(assoc, ASSOCIATE); 1414 CMD(deauth, DEAUTHENTICATE); 1415 CMD(disassoc, DISASSOCIATE); 1416 CMD(join_ibss, JOIN_IBSS); 1417 CMD(join_mesh, JOIN_MESH); 1418 CMD(set_pmksa, SET_PMKSA); 1419 CMD(del_pmksa, DEL_PMKSA); 1420 CMD(flush_pmksa, FLUSH_PMKSA); 1421 if (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1422 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1423 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1424 CMD(mgmt_tx, FRAME); 1425 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1426 if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1427 i++; 1428 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1429 goto nla_put_failure; 1430 } 1431 if (dev->ops->set_monitor_channel || dev->ops->start_ap || 1432 dev->ops->join_mesh) { 1433 i++; 1434 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1435 goto nla_put_failure; 1436 } 1437 CMD(set_wds_peer, SET_WDS_PEER); 1438 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1439 CMD(tdls_mgmt, TDLS_MGMT); 1440 CMD(tdls_oper, TDLS_OPER); 1441 } 1442 if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1443 CMD(sched_scan_start, START_SCHED_SCAN); 1444 CMD(probe_client, PROBE_CLIENT); 1445 CMD(set_noack_map, SET_NOACK_MAP); 1446 if (dev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1447 i++; 1448 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1449 goto nla_put_failure; 1450 } 1451 CMD(start_p2p_device, START_P2P_DEVICE); 1452 CMD(set_mcast_rate, SET_MCAST_RATE); 1453 if (state->split) { 1454 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1455 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1456 if (dev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1457 CMD(channel_switch, CHANNEL_SWITCH); 1458 } 1459 CMD(set_qos_map, SET_QOS_MAP); 1460 1461 #ifdef CONFIG_NL80211_TESTMODE 1462 CMD(testmode_cmd, TESTMODE); 1463 #endif 1464 1465 #undef CMD 1466 1467 if (dev->ops->connect || dev->ops->auth) { 1468 i++; 1469 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1470 goto nla_put_failure; 1471 } 1472 1473 if (dev->ops->disconnect || dev->ops->deauth) { 1474 i++; 1475 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1476 goto nla_put_failure; 1477 } 1478 1479 nla_nest_end(msg, nl_cmds); 1480 state->split_start++; 1481 if (state->split) 1482 break; 1483 case 5: 1484 if (dev->ops->remain_on_channel && 1485 (dev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1486 nla_put_u32(msg, 1487 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1488 dev->wiphy.max_remain_on_channel_duration)) 1489 goto nla_put_failure; 1490 1491 if ((dev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1492 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1493 goto nla_put_failure; 1494 1495 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1496 goto nla_put_failure; 1497 state->split_start++; 1498 if (state->split) 1499 break; 1500 case 6: 1501 #ifdef CONFIG_PM 1502 if (nl80211_send_wowlan(msg, dev, state->split)) 1503 goto nla_put_failure; 1504 state->split_start++; 1505 if (state->split) 1506 break; 1507 #else 1508 state->split_start++; 1509 #endif 1510 case 7: 1511 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1512 dev->wiphy.software_iftypes)) 1513 goto nla_put_failure; 1514 1515 if (nl80211_put_iface_combinations(&dev->wiphy, msg, 1516 state->split)) 1517 goto nla_put_failure; 1518 1519 state->split_start++; 1520 if (state->split) 1521 break; 1522 case 8: 1523 if ((dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1524 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1525 dev->wiphy.ap_sme_capa)) 1526 goto nla_put_failure; 1527 1528 features = dev->wiphy.features; 1529 /* 1530 * We can only add the per-channel limit information if the 1531 * dump is split, otherwise it makes it too big. Therefore 1532 * only advertise it in that case. 1533 */ 1534 if (state->split) 1535 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1536 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1537 goto nla_put_failure; 1538 1539 if (dev->wiphy.ht_capa_mod_mask && 1540 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1541 sizeof(*dev->wiphy.ht_capa_mod_mask), 1542 dev->wiphy.ht_capa_mod_mask)) 1543 goto nla_put_failure; 1544 1545 if (dev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1546 dev->wiphy.max_acl_mac_addrs && 1547 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1548 dev->wiphy.max_acl_mac_addrs)) 1549 goto nla_put_failure; 1550 1551 /* 1552 * Any information below this point is only available to 1553 * applications that can deal with it being split. This 1554 * helps ensure that newly added capabilities don't break 1555 * older tools by overrunning their buffers. 1556 * 1557 * We still increment split_start so that in the split 1558 * case we'll continue with more data in the next round, 1559 * but break unconditionally so unsplit data stops here. 1560 */ 1561 state->split_start++; 1562 break; 1563 case 9: 1564 if (dev->wiphy.extended_capabilities && 1565 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1566 dev->wiphy.extended_capabilities_len, 1567 dev->wiphy.extended_capabilities) || 1568 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1569 dev->wiphy.extended_capabilities_len, 1570 dev->wiphy.extended_capabilities_mask))) 1571 goto nla_put_failure; 1572 1573 if (dev->wiphy.vht_capa_mod_mask && 1574 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1575 sizeof(*dev->wiphy.vht_capa_mod_mask), 1576 dev->wiphy.vht_capa_mod_mask)) 1577 goto nla_put_failure; 1578 1579 state->split_start++; 1580 break; 1581 case 10: 1582 if (nl80211_send_coalesce(msg, dev)) 1583 goto nla_put_failure; 1584 1585 if ((dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1586 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1587 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1588 goto nla_put_failure; 1589 state->split_start++; 1590 break; 1591 case 11: 1592 if (dev->wiphy.n_vendor_commands) { 1593 const struct nl80211_vendor_cmd_info *info; 1594 struct nlattr *nested; 1595 1596 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1597 if (!nested) 1598 goto nla_put_failure; 1599 1600 for (i = 0; i < dev->wiphy.n_vendor_commands; i++) { 1601 info = &dev->wiphy.vendor_commands[i].info; 1602 if (nla_put(msg, i + 1, sizeof(*info), info)) 1603 goto nla_put_failure; 1604 } 1605 nla_nest_end(msg, nested); 1606 } 1607 1608 if (dev->wiphy.n_vendor_events) { 1609 const struct nl80211_vendor_cmd_info *info; 1610 struct nlattr *nested; 1611 1612 nested = nla_nest_start(msg, 1613 NL80211_ATTR_VENDOR_EVENTS); 1614 if (!nested) 1615 goto nla_put_failure; 1616 1617 for (i = 0; i < dev->wiphy.n_vendor_events; i++) { 1618 info = &dev->wiphy.vendor_events[i]; 1619 if (nla_put(msg, i + 1, sizeof(*info), info)) 1620 goto nla_put_failure; 1621 } 1622 nla_nest_end(msg, nested); 1623 } 1624 1625 /* done */ 1626 state->split_start = 0; 1627 break; 1628 } 1629 return genlmsg_end(msg, hdr); 1630 1631 nla_put_failure: 1632 genlmsg_cancel(msg, hdr); 1633 return -EMSGSIZE; 1634 } 1635 1636 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1637 struct netlink_callback *cb, 1638 struct nl80211_dump_wiphy_state *state) 1639 { 1640 struct nlattr **tb = nl80211_fam.attrbuf; 1641 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1642 tb, nl80211_fam.maxattr, nl80211_policy); 1643 /* ignore parse errors for backward compatibility */ 1644 if (ret) 1645 return 0; 1646 1647 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1648 if (tb[NL80211_ATTR_WIPHY]) 1649 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1650 if (tb[NL80211_ATTR_WDEV]) 1651 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1652 if (tb[NL80211_ATTR_IFINDEX]) { 1653 struct net_device *netdev; 1654 struct cfg80211_registered_device *rdev; 1655 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1656 1657 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1658 if (!netdev) 1659 return -ENODEV; 1660 if (netdev->ieee80211_ptr) { 1661 rdev = wiphy_to_dev( 1662 netdev->ieee80211_ptr->wiphy); 1663 state->filter_wiphy = rdev->wiphy_idx; 1664 } 1665 } 1666 1667 return 0; 1668 } 1669 1670 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1671 { 1672 int idx = 0, ret; 1673 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1674 struct cfg80211_registered_device *dev; 1675 1676 rtnl_lock(); 1677 if (!state) { 1678 state = kzalloc(sizeof(*state), GFP_KERNEL); 1679 if (!state) { 1680 rtnl_unlock(); 1681 return -ENOMEM; 1682 } 1683 state->filter_wiphy = -1; 1684 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1685 if (ret) { 1686 kfree(state); 1687 rtnl_unlock(); 1688 return ret; 1689 } 1690 cb->args[0] = (long)state; 1691 } 1692 1693 list_for_each_entry(dev, &cfg80211_rdev_list, list) { 1694 if (!net_eq(wiphy_net(&dev->wiphy), sock_net(skb->sk))) 1695 continue; 1696 if (++idx <= state->start) 1697 continue; 1698 if (state->filter_wiphy != -1 && 1699 state->filter_wiphy != dev->wiphy_idx) 1700 continue; 1701 /* attempt to fit multiple wiphy data chunks into the skb */ 1702 do { 1703 ret = nl80211_send_wiphy(dev, skb, 1704 NETLINK_CB(cb->skb).portid, 1705 cb->nlh->nlmsg_seq, 1706 NLM_F_MULTI, state); 1707 if (ret < 0) { 1708 /* 1709 * If sending the wiphy data didn't fit (ENOBUFS 1710 * or EMSGSIZE returned), this SKB is still 1711 * empty (so it's not too big because another 1712 * wiphy dataset is already in the skb) and 1713 * we've not tried to adjust the dump allocation 1714 * yet ... then adjust the alloc size to be 1715 * bigger, and return 1 but with the empty skb. 1716 * This results in an empty message being RX'ed 1717 * in userspace, but that is ignored. 1718 * 1719 * We can then retry with the larger buffer. 1720 */ 1721 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1722 !skb->len && 1723 cb->min_dump_alloc < 4096) { 1724 cb->min_dump_alloc = 4096; 1725 rtnl_unlock(); 1726 return 1; 1727 } 1728 idx--; 1729 break; 1730 } 1731 } while (state->split_start > 0); 1732 break; 1733 } 1734 rtnl_unlock(); 1735 1736 state->start = idx; 1737 1738 return skb->len; 1739 } 1740 1741 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1742 { 1743 kfree((void *)cb->args[0]); 1744 return 0; 1745 } 1746 1747 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1748 { 1749 struct sk_buff *msg; 1750 struct cfg80211_registered_device *dev = info->user_ptr[0]; 1751 struct nl80211_dump_wiphy_state state = {}; 1752 1753 msg = nlmsg_new(4096, GFP_KERNEL); 1754 if (!msg) 1755 return -ENOMEM; 1756 1757 if (nl80211_send_wiphy(dev, msg, info->snd_portid, info->snd_seq, 0, 1758 &state) < 0) { 1759 nlmsg_free(msg); 1760 return -ENOBUFS; 1761 } 1762 1763 return genlmsg_reply(msg, info); 1764 } 1765 1766 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1767 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1768 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1769 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1770 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1771 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1772 }; 1773 1774 static int parse_txq_params(struct nlattr *tb[], 1775 struct ieee80211_txq_params *txq_params) 1776 { 1777 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1778 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1779 !tb[NL80211_TXQ_ATTR_AIFS]) 1780 return -EINVAL; 1781 1782 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1783 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1784 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1785 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1786 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1787 1788 if (txq_params->ac >= NL80211_NUM_ACS) 1789 return -EINVAL; 1790 1791 return 0; 1792 } 1793 1794 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1795 { 1796 /* 1797 * You can only set the channel explicitly for WDS interfaces, 1798 * all others have their channel managed via their respective 1799 * "establish a connection" command (connect, join, ...) 1800 * 1801 * For AP/GO and mesh mode, the channel can be set with the 1802 * channel userspace API, but is only stored and passed to the 1803 * low-level driver when the AP starts or the mesh is joined. 1804 * This is for backward compatibility, userspace can also give 1805 * the channel in the start-ap or join-mesh commands instead. 1806 * 1807 * Monitors are special as they are normally slaved to 1808 * whatever else is going on, so they have their own special 1809 * operation to set the monitor channel if possible. 1810 */ 1811 return !wdev || 1812 wdev->iftype == NL80211_IFTYPE_AP || 1813 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1814 wdev->iftype == NL80211_IFTYPE_MONITOR || 1815 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1816 } 1817 1818 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1819 struct genl_info *info, 1820 struct cfg80211_chan_def *chandef) 1821 { 1822 u32 control_freq; 1823 1824 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1825 return -EINVAL; 1826 1827 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1828 1829 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1830 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1831 chandef->center_freq1 = control_freq; 1832 chandef->center_freq2 = 0; 1833 1834 /* Primary channel not allowed */ 1835 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1836 return -EINVAL; 1837 1838 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1839 enum nl80211_channel_type chantype; 1840 1841 chantype = nla_get_u32( 1842 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1843 1844 switch (chantype) { 1845 case NL80211_CHAN_NO_HT: 1846 case NL80211_CHAN_HT20: 1847 case NL80211_CHAN_HT40PLUS: 1848 case NL80211_CHAN_HT40MINUS: 1849 cfg80211_chandef_create(chandef, chandef->chan, 1850 chantype); 1851 break; 1852 default: 1853 return -EINVAL; 1854 } 1855 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1856 chandef->width = 1857 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1858 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1859 chandef->center_freq1 = 1860 nla_get_u32( 1861 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1862 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1863 chandef->center_freq2 = 1864 nla_get_u32( 1865 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1866 } 1867 1868 if (!cfg80211_chandef_valid(chandef)) 1869 return -EINVAL; 1870 1871 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1872 IEEE80211_CHAN_DISABLED)) 1873 return -EINVAL; 1874 1875 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1876 chandef->width == NL80211_CHAN_WIDTH_10) && 1877 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1878 return -EINVAL; 1879 1880 return 0; 1881 } 1882 1883 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1884 struct wireless_dev *wdev, 1885 struct genl_info *info) 1886 { 1887 struct cfg80211_chan_def chandef; 1888 int result; 1889 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1890 1891 if (wdev) 1892 iftype = wdev->iftype; 1893 1894 if (!nl80211_can_set_dev_channel(wdev)) 1895 return -EOPNOTSUPP; 1896 1897 result = nl80211_parse_chandef(rdev, info, &chandef); 1898 if (result) 1899 return result; 1900 1901 switch (iftype) { 1902 case NL80211_IFTYPE_AP: 1903 case NL80211_IFTYPE_P2P_GO: 1904 if (wdev->beacon_interval) { 1905 result = -EBUSY; 1906 break; 1907 } 1908 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef)) { 1909 result = -EINVAL; 1910 break; 1911 } 1912 wdev->preset_chandef = chandef; 1913 result = 0; 1914 break; 1915 case NL80211_IFTYPE_MESH_POINT: 1916 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 1917 break; 1918 case NL80211_IFTYPE_MONITOR: 1919 result = cfg80211_set_monitor_channel(rdev, &chandef); 1920 break; 1921 default: 1922 result = -EINVAL; 1923 } 1924 1925 return result; 1926 } 1927 1928 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 1929 { 1930 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1931 struct net_device *netdev = info->user_ptr[1]; 1932 1933 return __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info); 1934 } 1935 1936 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 1937 { 1938 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1939 struct net_device *dev = info->user_ptr[1]; 1940 struct wireless_dev *wdev = dev->ieee80211_ptr; 1941 const u8 *bssid; 1942 1943 if (!info->attrs[NL80211_ATTR_MAC]) 1944 return -EINVAL; 1945 1946 if (netif_running(dev)) 1947 return -EBUSY; 1948 1949 if (!rdev->ops->set_wds_peer) 1950 return -EOPNOTSUPP; 1951 1952 if (wdev->iftype != NL80211_IFTYPE_WDS) 1953 return -EOPNOTSUPP; 1954 1955 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 1956 return rdev_set_wds_peer(rdev, dev, bssid); 1957 } 1958 1959 1960 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 1961 { 1962 struct cfg80211_registered_device *rdev; 1963 struct net_device *netdev = NULL; 1964 struct wireless_dev *wdev; 1965 int result = 0, rem_txq_params = 0; 1966 struct nlattr *nl_txq_params; 1967 u32 changed; 1968 u8 retry_short = 0, retry_long = 0; 1969 u32 frag_threshold = 0, rts_threshold = 0; 1970 u8 coverage_class = 0; 1971 1972 ASSERT_RTNL(); 1973 1974 /* 1975 * Try to find the wiphy and netdev. Normally this 1976 * function shouldn't need the netdev, but this is 1977 * done for backward compatibility -- previously 1978 * setting the channel was done per wiphy, but now 1979 * it is per netdev. Previous userland like hostapd 1980 * also passed a netdev to set_wiphy, so that it is 1981 * possible to let that go to the right netdev! 1982 */ 1983 1984 if (info->attrs[NL80211_ATTR_IFINDEX]) { 1985 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 1986 1987 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 1988 if (netdev && netdev->ieee80211_ptr) 1989 rdev = wiphy_to_dev(netdev->ieee80211_ptr->wiphy); 1990 else 1991 netdev = NULL; 1992 } 1993 1994 if (!netdev) { 1995 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 1996 info->attrs); 1997 if (IS_ERR(rdev)) 1998 return PTR_ERR(rdev); 1999 wdev = NULL; 2000 netdev = NULL; 2001 result = 0; 2002 } else 2003 wdev = netdev->ieee80211_ptr; 2004 2005 /* 2006 * end workaround code, by now the rdev is available 2007 * and locked, and wdev may or may not be NULL. 2008 */ 2009 2010 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2011 result = cfg80211_dev_rename( 2012 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2013 2014 if (result) 2015 return result; 2016 2017 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2018 struct ieee80211_txq_params txq_params; 2019 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2020 2021 if (!rdev->ops->set_txq_params) 2022 return -EOPNOTSUPP; 2023 2024 if (!netdev) 2025 return -EINVAL; 2026 2027 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2028 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2029 return -EINVAL; 2030 2031 if (!netif_running(netdev)) 2032 return -ENETDOWN; 2033 2034 nla_for_each_nested(nl_txq_params, 2035 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2036 rem_txq_params) { 2037 nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2038 nla_data(nl_txq_params), 2039 nla_len(nl_txq_params), 2040 txq_params_policy); 2041 result = parse_txq_params(tb, &txq_params); 2042 if (result) 2043 return result; 2044 2045 result = rdev_set_txq_params(rdev, netdev, 2046 &txq_params); 2047 if (result) 2048 return result; 2049 } 2050 } 2051 2052 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2053 result = __nl80211_set_channel(rdev, 2054 nl80211_can_set_dev_channel(wdev) ? wdev : NULL, 2055 info); 2056 if (result) 2057 return result; 2058 } 2059 2060 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2061 struct wireless_dev *txp_wdev = wdev; 2062 enum nl80211_tx_power_setting type; 2063 int idx, mbm = 0; 2064 2065 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2066 txp_wdev = NULL; 2067 2068 if (!rdev->ops->set_tx_power) 2069 return -EOPNOTSUPP; 2070 2071 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2072 type = nla_get_u32(info->attrs[idx]); 2073 2074 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2075 (type != NL80211_TX_POWER_AUTOMATIC)) 2076 return -EINVAL; 2077 2078 if (type != NL80211_TX_POWER_AUTOMATIC) { 2079 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2080 mbm = nla_get_u32(info->attrs[idx]); 2081 } 2082 2083 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2084 if (result) 2085 return result; 2086 } 2087 2088 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2089 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2090 u32 tx_ant, rx_ant; 2091 if ((!rdev->wiphy.available_antennas_tx && 2092 !rdev->wiphy.available_antennas_rx) || 2093 !rdev->ops->set_antenna) 2094 return -EOPNOTSUPP; 2095 2096 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2097 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2098 2099 /* reject antenna configurations which don't match the 2100 * available antenna masks, except for the "all" mask */ 2101 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2102 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2103 return -EINVAL; 2104 2105 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2106 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2107 2108 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2109 if (result) 2110 return result; 2111 } 2112 2113 changed = 0; 2114 2115 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2116 retry_short = nla_get_u8( 2117 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2118 if (retry_short == 0) 2119 return -EINVAL; 2120 2121 changed |= WIPHY_PARAM_RETRY_SHORT; 2122 } 2123 2124 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2125 retry_long = nla_get_u8( 2126 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2127 if (retry_long == 0) 2128 return -EINVAL; 2129 2130 changed |= WIPHY_PARAM_RETRY_LONG; 2131 } 2132 2133 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2134 frag_threshold = nla_get_u32( 2135 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2136 if (frag_threshold < 256) 2137 return -EINVAL; 2138 2139 if (frag_threshold != (u32) -1) { 2140 /* 2141 * Fragments (apart from the last one) are required to 2142 * have even length. Make the fragmentation code 2143 * simpler by stripping LSB should someone try to use 2144 * odd threshold value. 2145 */ 2146 frag_threshold &= ~0x1; 2147 } 2148 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2149 } 2150 2151 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2152 rts_threshold = nla_get_u32( 2153 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2154 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2155 } 2156 2157 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2158 coverage_class = nla_get_u8( 2159 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2160 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2161 } 2162 2163 if (changed) { 2164 u8 old_retry_short, old_retry_long; 2165 u32 old_frag_threshold, old_rts_threshold; 2166 u8 old_coverage_class; 2167 2168 if (!rdev->ops->set_wiphy_params) 2169 return -EOPNOTSUPP; 2170 2171 old_retry_short = rdev->wiphy.retry_short; 2172 old_retry_long = rdev->wiphy.retry_long; 2173 old_frag_threshold = rdev->wiphy.frag_threshold; 2174 old_rts_threshold = rdev->wiphy.rts_threshold; 2175 old_coverage_class = rdev->wiphy.coverage_class; 2176 2177 if (changed & WIPHY_PARAM_RETRY_SHORT) 2178 rdev->wiphy.retry_short = retry_short; 2179 if (changed & WIPHY_PARAM_RETRY_LONG) 2180 rdev->wiphy.retry_long = retry_long; 2181 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2182 rdev->wiphy.frag_threshold = frag_threshold; 2183 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2184 rdev->wiphy.rts_threshold = rts_threshold; 2185 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2186 rdev->wiphy.coverage_class = coverage_class; 2187 2188 result = rdev_set_wiphy_params(rdev, changed); 2189 if (result) { 2190 rdev->wiphy.retry_short = old_retry_short; 2191 rdev->wiphy.retry_long = old_retry_long; 2192 rdev->wiphy.frag_threshold = old_frag_threshold; 2193 rdev->wiphy.rts_threshold = old_rts_threshold; 2194 rdev->wiphy.coverage_class = old_coverage_class; 2195 } 2196 } 2197 return 0; 2198 } 2199 2200 static inline u64 wdev_id(struct wireless_dev *wdev) 2201 { 2202 return (u64)wdev->identifier | 2203 ((u64)wiphy_to_dev(wdev->wiphy)->wiphy_idx << 32); 2204 } 2205 2206 static int nl80211_send_chandef(struct sk_buff *msg, 2207 const struct cfg80211_chan_def *chandef) 2208 { 2209 WARN_ON(!cfg80211_chandef_valid(chandef)); 2210 2211 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2212 chandef->chan->center_freq)) 2213 return -ENOBUFS; 2214 switch (chandef->width) { 2215 case NL80211_CHAN_WIDTH_20_NOHT: 2216 case NL80211_CHAN_WIDTH_20: 2217 case NL80211_CHAN_WIDTH_40: 2218 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2219 cfg80211_get_chandef_type(chandef))) 2220 return -ENOBUFS; 2221 break; 2222 default: 2223 break; 2224 } 2225 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2226 return -ENOBUFS; 2227 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2228 return -ENOBUFS; 2229 if (chandef->center_freq2 && 2230 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2231 return -ENOBUFS; 2232 return 0; 2233 } 2234 2235 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2236 struct cfg80211_registered_device *rdev, 2237 struct wireless_dev *wdev) 2238 { 2239 struct net_device *dev = wdev->netdev; 2240 void *hdr; 2241 2242 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_INTERFACE); 2243 if (!hdr) 2244 return -1; 2245 2246 if (dev && 2247 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2248 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2249 goto nla_put_failure; 2250 2251 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2252 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2253 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2254 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2255 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2256 rdev->devlist_generation ^ 2257 (cfg80211_rdev_list_generation << 2))) 2258 goto nla_put_failure; 2259 2260 if (rdev->ops->get_channel) { 2261 int ret; 2262 struct cfg80211_chan_def chandef; 2263 2264 ret = rdev_get_channel(rdev, wdev, &chandef); 2265 if (ret == 0) { 2266 if (nl80211_send_chandef(msg, &chandef)) 2267 goto nla_put_failure; 2268 } 2269 } 2270 2271 if (wdev->ssid_len) { 2272 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2273 goto nla_put_failure; 2274 } 2275 2276 return genlmsg_end(msg, hdr); 2277 2278 nla_put_failure: 2279 genlmsg_cancel(msg, hdr); 2280 return -EMSGSIZE; 2281 } 2282 2283 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2284 { 2285 int wp_idx = 0; 2286 int if_idx = 0; 2287 int wp_start = cb->args[0]; 2288 int if_start = cb->args[1]; 2289 struct cfg80211_registered_device *rdev; 2290 struct wireless_dev *wdev; 2291 2292 rtnl_lock(); 2293 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2294 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2295 continue; 2296 if (wp_idx < wp_start) { 2297 wp_idx++; 2298 continue; 2299 } 2300 if_idx = 0; 2301 2302 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2303 if (if_idx < if_start) { 2304 if_idx++; 2305 continue; 2306 } 2307 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2308 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2309 rdev, wdev) < 0) { 2310 goto out; 2311 } 2312 if_idx++; 2313 } 2314 2315 wp_idx++; 2316 } 2317 out: 2318 rtnl_unlock(); 2319 2320 cb->args[0] = wp_idx; 2321 cb->args[1] = if_idx; 2322 2323 return skb->len; 2324 } 2325 2326 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2327 { 2328 struct sk_buff *msg; 2329 struct cfg80211_registered_device *dev = info->user_ptr[0]; 2330 struct wireless_dev *wdev = info->user_ptr[1]; 2331 2332 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2333 if (!msg) 2334 return -ENOMEM; 2335 2336 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2337 dev, wdev) < 0) { 2338 nlmsg_free(msg); 2339 return -ENOBUFS; 2340 } 2341 2342 return genlmsg_reply(msg, info); 2343 } 2344 2345 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2346 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2347 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2348 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2349 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2350 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2351 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2352 }; 2353 2354 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2355 { 2356 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2357 int flag; 2358 2359 *mntrflags = 0; 2360 2361 if (!nla) 2362 return -EINVAL; 2363 2364 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2365 nla, mntr_flags_policy)) 2366 return -EINVAL; 2367 2368 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2369 if (flags[flag]) 2370 *mntrflags |= (1<<flag); 2371 2372 return 0; 2373 } 2374 2375 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2376 struct net_device *netdev, u8 use_4addr, 2377 enum nl80211_iftype iftype) 2378 { 2379 if (!use_4addr) { 2380 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2381 return -EBUSY; 2382 return 0; 2383 } 2384 2385 switch (iftype) { 2386 case NL80211_IFTYPE_AP_VLAN: 2387 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2388 return 0; 2389 break; 2390 case NL80211_IFTYPE_STATION: 2391 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2392 return 0; 2393 break; 2394 default: 2395 break; 2396 } 2397 2398 return -EOPNOTSUPP; 2399 } 2400 2401 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2402 { 2403 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2404 struct vif_params params; 2405 int err; 2406 enum nl80211_iftype otype, ntype; 2407 struct net_device *dev = info->user_ptr[1]; 2408 u32 _flags, *flags = NULL; 2409 bool change = false; 2410 2411 memset(¶ms, 0, sizeof(params)); 2412 2413 otype = ntype = dev->ieee80211_ptr->iftype; 2414 2415 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2416 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2417 if (otype != ntype) 2418 change = true; 2419 if (ntype > NL80211_IFTYPE_MAX) 2420 return -EINVAL; 2421 } 2422 2423 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2424 struct wireless_dev *wdev = dev->ieee80211_ptr; 2425 2426 if (ntype != NL80211_IFTYPE_MESH_POINT) 2427 return -EINVAL; 2428 if (netif_running(dev)) 2429 return -EBUSY; 2430 2431 wdev_lock(wdev); 2432 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2433 IEEE80211_MAX_MESH_ID_LEN); 2434 wdev->mesh_id_up_len = 2435 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2436 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2437 wdev->mesh_id_up_len); 2438 wdev_unlock(wdev); 2439 } 2440 2441 if (info->attrs[NL80211_ATTR_4ADDR]) { 2442 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2443 change = true; 2444 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2445 if (err) 2446 return err; 2447 } else { 2448 params.use_4addr = -1; 2449 } 2450 2451 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2452 if (ntype != NL80211_IFTYPE_MONITOR) 2453 return -EINVAL; 2454 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2455 &_flags); 2456 if (err) 2457 return err; 2458 2459 flags = &_flags; 2460 change = true; 2461 } 2462 2463 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2464 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2465 return -EOPNOTSUPP; 2466 2467 if (change) 2468 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2469 else 2470 err = 0; 2471 2472 if (!err && params.use_4addr != -1) 2473 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2474 2475 return err; 2476 } 2477 2478 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2479 { 2480 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2481 struct vif_params params; 2482 struct wireless_dev *wdev; 2483 struct sk_buff *msg; 2484 int err; 2485 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2486 u32 flags; 2487 2488 memset(¶ms, 0, sizeof(params)); 2489 2490 if (!info->attrs[NL80211_ATTR_IFNAME]) 2491 return -EINVAL; 2492 2493 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2494 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2495 if (type > NL80211_IFTYPE_MAX) 2496 return -EINVAL; 2497 } 2498 2499 if (!rdev->ops->add_virtual_intf || 2500 !(rdev->wiphy.interface_modes & (1 << type))) 2501 return -EOPNOTSUPP; 2502 2503 if (type == NL80211_IFTYPE_P2P_DEVICE && info->attrs[NL80211_ATTR_MAC]) { 2504 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2505 ETH_ALEN); 2506 if (!is_valid_ether_addr(params.macaddr)) 2507 return -EADDRNOTAVAIL; 2508 } 2509 2510 if (info->attrs[NL80211_ATTR_4ADDR]) { 2511 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2512 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2513 if (err) 2514 return err; 2515 } 2516 2517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2518 if (!msg) 2519 return -ENOMEM; 2520 2521 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2522 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2523 &flags); 2524 2525 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2526 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2527 return -EOPNOTSUPP; 2528 2529 wdev = rdev_add_virtual_intf(rdev, 2530 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2531 type, err ? NULL : &flags, ¶ms); 2532 if (IS_ERR(wdev)) { 2533 nlmsg_free(msg); 2534 return PTR_ERR(wdev); 2535 } 2536 2537 switch (type) { 2538 case NL80211_IFTYPE_MESH_POINT: 2539 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2540 break; 2541 wdev_lock(wdev); 2542 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2543 IEEE80211_MAX_MESH_ID_LEN); 2544 wdev->mesh_id_up_len = 2545 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2546 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2547 wdev->mesh_id_up_len); 2548 wdev_unlock(wdev); 2549 break; 2550 case NL80211_IFTYPE_P2P_DEVICE: 2551 /* 2552 * P2P Device doesn't have a netdev, so doesn't go 2553 * through the netdev notifier and must be added here 2554 */ 2555 mutex_init(&wdev->mtx); 2556 INIT_LIST_HEAD(&wdev->event_list); 2557 spin_lock_init(&wdev->event_lock); 2558 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2559 spin_lock_init(&wdev->mgmt_registrations_lock); 2560 2561 wdev->identifier = ++rdev->wdev_id; 2562 list_add_rcu(&wdev->list, &rdev->wdev_list); 2563 rdev->devlist_generation++; 2564 break; 2565 default: 2566 break; 2567 } 2568 2569 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2570 rdev, wdev) < 0) { 2571 nlmsg_free(msg); 2572 return -ENOBUFS; 2573 } 2574 2575 return genlmsg_reply(msg, info); 2576 } 2577 2578 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2579 { 2580 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2581 struct wireless_dev *wdev = info->user_ptr[1]; 2582 2583 if (!rdev->ops->del_virtual_intf) 2584 return -EOPNOTSUPP; 2585 2586 /* 2587 * If we remove a wireless device without a netdev then clear 2588 * user_ptr[1] so that nl80211_post_doit won't dereference it 2589 * to check if it needs to do dev_put(). Otherwise it crashes 2590 * since the wdev has been freed, unlike with a netdev where 2591 * we need the dev_put() for the netdev to really be freed. 2592 */ 2593 if (!wdev->netdev) 2594 info->user_ptr[1] = NULL; 2595 2596 return rdev_del_virtual_intf(rdev, wdev); 2597 } 2598 2599 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2600 { 2601 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2602 struct net_device *dev = info->user_ptr[1]; 2603 u16 noack_map; 2604 2605 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2606 return -EINVAL; 2607 2608 if (!rdev->ops->set_noack_map) 2609 return -EOPNOTSUPP; 2610 2611 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2612 2613 return rdev_set_noack_map(rdev, dev, noack_map); 2614 } 2615 2616 struct get_key_cookie { 2617 struct sk_buff *msg; 2618 int error; 2619 int idx; 2620 }; 2621 2622 static void get_key_callback(void *c, struct key_params *params) 2623 { 2624 struct nlattr *key; 2625 struct get_key_cookie *cookie = c; 2626 2627 if ((params->key && 2628 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2629 params->key_len, params->key)) || 2630 (params->seq && 2631 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2632 params->seq_len, params->seq)) || 2633 (params->cipher && 2634 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2635 params->cipher))) 2636 goto nla_put_failure; 2637 2638 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2639 if (!key) 2640 goto nla_put_failure; 2641 2642 if ((params->key && 2643 nla_put(cookie->msg, NL80211_KEY_DATA, 2644 params->key_len, params->key)) || 2645 (params->seq && 2646 nla_put(cookie->msg, NL80211_KEY_SEQ, 2647 params->seq_len, params->seq)) || 2648 (params->cipher && 2649 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2650 params->cipher))) 2651 goto nla_put_failure; 2652 2653 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2654 goto nla_put_failure; 2655 2656 nla_nest_end(cookie->msg, key); 2657 2658 return; 2659 nla_put_failure: 2660 cookie->error = 1; 2661 } 2662 2663 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2664 { 2665 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2666 int err; 2667 struct net_device *dev = info->user_ptr[1]; 2668 u8 key_idx = 0; 2669 const u8 *mac_addr = NULL; 2670 bool pairwise; 2671 struct get_key_cookie cookie = { 2672 .error = 0, 2673 }; 2674 void *hdr; 2675 struct sk_buff *msg; 2676 2677 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2678 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2679 2680 if (key_idx > 5) 2681 return -EINVAL; 2682 2683 if (info->attrs[NL80211_ATTR_MAC]) 2684 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2685 2686 pairwise = !!mac_addr; 2687 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2688 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2689 if (kt >= NUM_NL80211_KEYTYPES) 2690 return -EINVAL; 2691 if (kt != NL80211_KEYTYPE_GROUP && 2692 kt != NL80211_KEYTYPE_PAIRWISE) 2693 return -EINVAL; 2694 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2695 } 2696 2697 if (!rdev->ops->get_key) 2698 return -EOPNOTSUPP; 2699 2700 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2701 if (!msg) 2702 return -ENOMEM; 2703 2704 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2705 NL80211_CMD_NEW_KEY); 2706 if (!hdr) 2707 goto nla_put_failure; 2708 2709 cookie.msg = msg; 2710 cookie.idx = key_idx; 2711 2712 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2713 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2714 goto nla_put_failure; 2715 if (mac_addr && 2716 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2717 goto nla_put_failure; 2718 2719 if (pairwise && mac_addr && 2720 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2721 return -ENOENT; 2722 2723 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2724 get_key_callback); 2725 2726 if (err) 2727 goto free_msg; 2728 2729 if (cookie.error) 2730 goto nla_put_failure; 2731 2732 genlmsg_end(msg, hdr); 2733 return genlmsg_reply(msg, info); 2734 2735 nla_put_failure: 2736 err = -ENOBUFS; 2737 free_msg: 2738 nlmsg_free(msg); 2739 return err; 2740 } 2741 2742 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2743 { 2744 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2745 struct key_parse key; 2746 int err; 2747 struct net_device *dev = info->user_ptr[1]; 2748 2749 err = nl80211_parse_key(info, &key); 2750 if (err) 2751 return err; 2752 2753 if (key.idx < 0) 2754 return -EINVAL; 2755 2756 /* only support setting default key */ 2757 if (!key.def && !key.defmgmt) 2758 return -EINVAL; 2759 2760 wdev_lock(dev->ieee80211_ptr); 2761 2762 if (key.def) { 2763 if (!rdev->ops->set_default_key) { 2764 err = -EOPNOTSUPP; 2765 goto out; 2766 } 2767 2768 err = nl80211_key_allowed(dev->ieee80211_ptr); 2769 if (err) 2770 goto out; 2771 2772 err = rdev_set_default_key(rdev, dev, key.idx, 2773 key.def_uni, key.def_multi); 2774 2775 if (err) 2776 goto out; 2777 2778 #ifdef CONFIG_CFG80211_WEXT 2779 dev->ieee80211_ptr->wext.default_key = key.idx; 2780 #endif 2781 } else { 2782 if (key.def_uni || !key.def_multi) { 2783 err = -EINVAL; 2784 goto out; 2785 } 2786 2787 if (!rdev->ops->set_default_mgmt_key) { 2788 err = -EOPNOTSUPP; 2789 goto out; 2790 } 2791 2792 err = nl80211_key_allowed(dev->ieee80211_ptr); 2793 if (err) 2794 goto out; 2795 2796 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2797 if (err) 2798 goto out; 2799 2800 #ifdef CONFIG_CFG80211_WEXT 2801 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2802 #endif 2803 } 2804 2805 out: 2806 wdev_unlock(dev->ieee80211_ptr); 2807 2808 return err; 2809 } 2810 2811 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2812 { 2813 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2814 int err; 2815 struct net_device *dev = info->user_ptr[1]; 2816 struct key_parse key; 2817 const u8 *mac_addr = NULL; 2818 2819 err = nl80211_parse_key(info, &key); 2820 if (err) 2821 return err; 2822 2823 if (!key.p.key) 2824 return -EINVAL; 2825 2826 if (info->attrs[NL80211_ATTR_MAC]) 2827 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2828 2829 if (key.type == -1) { 2830 if (mac_addr) 2831 key.type = NL80211_KEYTYPE_PAIRWISE; 2832 else 2833 key.type = NL80211_KEYTYPE_GROUP; 2834 } 2835 2836 /* for now */ 2837 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2838 key.type != NL80211_KEYTYPE_GROUP) 2839 return -EINVAL; 2840 2841 if (!rdev->ops->add_key) 2842 return -EOPNOTSUPP; 2843 2844 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 2845 key.type == NL80211_KEYTYPE_PAIRWISE, 2846 mac_addr)) 2847 return -EINVAL; 2848 2849 wdev_lock(dev->ieee80211_ptr); 2850 err = nl80211_key_allowed(dev->ieee80211_ptr); 2851 if (!err) 2852 err = rdev_add_key(rdev, dev, key.idx, 2853 key.type == NL80211_KEYTYPE_PAIRWISE, 2854 mac_addr, &key.p); 2855 wdev_unlock(dev->ieee80211_ptr); 2856 2857 return err; 2858 } 2859 2860 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 2861 { 2862 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2863 int err; 2864 struct net_device *dev = info->user_ptr[1]; 2865 u8 *mac_addr = NULL; 2866 struct key_parse key; 2867 2868 err = nl80211_parse_key(info, &key); 2869 if (err) 2870 return err; 2871 2872 if (info->attrs[NL80211_ATTR_MAC]) 2873 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2874 2875 if (key.type == -1) { 2876 if (mac_addr) 2877 key.type = NL80211_KEYTYPE_PAIRWISE; 2878 else 2879 key.type = NL80211_KEYTYPE_GROUP; 2880 } 2881 2882 /* for now */ 2883 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2884 key.type != NL80211_KEYTYPE_GROUP) 2885 return -EINVAL; 2886 2887 if (!rdev->ops->del_key) 2888 return -EOPNOTSUPP; 2889 2890 wdev_lock(dev->ieee80211_ptr); 2891 err = nl80211_key_allowed(dev->ieee80211_ptr); 2892 2893 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && 2894 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2895 err = -ENOENT; 2896 2897 if (!err) 2898 err = rdev_del_key(rdev, dev, key.idx, 2899 key.type == NL80211_KEYTYPE_PAIRWISE, 2900 mac_addr); 2901 2902 #ifdef CONFIG_CFG80211_WEXT 2903 if (!err) { 2904 if (key.idx == dev->ieee80211_ptr->wext.default_key) 2905 dev->ieee80211_ptr->wext.default_key = -1; 2906 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 2907 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 2908 } 2909 #endif 2910 wdev_unlock(dev->ieee80211_ptr); 2911 2912 return err; 2913 } 2914 2915 /* This function returns an error or the number of nested attributes */ 2916 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 2917 { 2918 struct nlattr *attr; 2919 int n_entries = 0, tmp; 2920 2921 nla_for_each_nested(attr, nl_attr, tmp) { 2922 if (nla_len(attr) != ETH_ALEN) 2923 return -EINVAL; 2924 2925 n_entries++; 2926 } 2927 2928 return n_entries; 2929 } 2930 2931 /* 2932 * This function parses ACL information and allocates memory for ACL data. 2933 * On successful return, the calling function is responsible to free the 2934 * ACL buffer returned by this function. 2935 */ 2936 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 2937 struct genl_info *info) 2938 { 2939 enum nl80211_acl_policy acl_policy; 2940 struct nlattr *attr; 2941 struct cfg80211_acl_data *acl; 2942 int i = 0, n_entries, tmp; 2943 2944 if (!wiphy->max_acl_mac_addrs) 2945 return ERR_PTR(-EOPNOTSUPP); 2946 2947 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 2948 return ERR_PTR(-EINVAL); 2949 2950 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 2951 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 2952 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 2953 return ERR_PTR(-EINVAL); 2954 2955 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 2956 return ERR_PTR(-EINVAL); 2957 2958 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 2959 if (n_entries < 0) 2960 return ERR_PTR(n_entries); 2961 2962 if (n_entries > wiphy->max_acl_mac_addrs) 2963 return ERR_PTR(-ENOTSUPP); 2964 2965 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 2966 GFP_KERNEL); 2967 if (!acl) 2968 return ERR_PTR(-ENOMEM); 2969 2970 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 2971 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 2972 i++; 2973 } 2974 2975 acl->n_acl_entries = n_entries; 2976 acl->acl_policy = acl_policy; 2977 2978 return acl; 2979 } 2980 2981 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 2982 { 2983 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2984 struct net_device *dev = info->user_ptr[1]; 2985 struct cfg80211_acl_data *acl; 2986 int err; 2987 2988 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2989 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2990 return -EOPNOTSUPP; 2991 2992 if (!dev->ieee80211_ptr->beacon_interval) 2993 return -EINVAL; 2994 2995 acl = parse_acl_data(&rdev->wiphy, info); 2996 if (IS_ERR(acl)) 2997 return PTR_ERR(acl); 2998 2999 err = rdev_set_mac_acl(rdev, dev, acl); 3000 3001 kfree(acl); 3002 3003 return err; 3004 } 3005 3006 static int nl80211_parse_beacon(struct nlattr *attrs[], 3007 struct cfg80211_beacon_data *bcn) 3008 { 3009 bool haveinfo = false; 3010 3011 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3012 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3013 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3014 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3015 return -EINVAL; 3016 3017 memset(bcn, 0, sizeof(*bcn)); 3018 3019 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3020 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3021 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3022 if (!bcn->head_len) 3023 return -EINVAL; 3024 haveinfo = true; 3025 } 3026 3027 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3028 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3029 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3030 haveinfo = true; 3031 } 3032 3033 if (!haveinfo) 3034 return -EINVAL; 3035 3036 if (attrs[NL80211_ATTR_IE]) { 3037 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3038 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3039 } 3040 3041 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3042 bcn->proberesp_ies = 3043 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3044 bcn->proberesp_ies_len = 3045 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3046 } 3047 3048 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3049 bcn->assocresp_ies = 3050 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3051 bcn->assocresp_ies_len = 3052 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3053 } 3054 3055 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3056 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3057 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3058 } 3059 3060 return 0; 3061 } 3062 3063 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3064 struct cfg80211_ap_settings *params) 3065 { 3066 struct wireless_dev *wdev; 3067 bool ret = false; 3068 3069 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3070 if (wdev->iftype != NL80211_IFTYPE_AP && 3071 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3072 continue; 3073 3074 if (!wdev->preset_chandef.chan) 3075 continue; 3076 3077 params->chandef = wdev->preset_chandef; 3078 ret = true; 3079 break; 3080 } 3081 3082 return ret; 3083 } 3084 3085 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3086 enum nl80211_auth_type auth_type, 3087 enum nl80211_commands cmd) 3088 { 3089 if (auth_type > NL80211_AUTHTYPE_MAX) 3090 return false; 3091 3092 switch (cmd) { 3093 case NL80211_CMD_AUTHENTICATE: 3094 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3095 auth_type == NL80211_AUTHTYPE_SAE) 3096 return false; 3097 return true; 3098 case NL80211_CMD_CONNECT: 3099 case NL80211_CMD_START_AP: 3100 /* SAE not supported yet */ 3101 if (auth_type == NL80211_AUTHTYPE_SAE) 3102 return false; 3103 return true; 3104 default: 3105 return false; 3106 } 3107 } 3108 3109 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3110 { 3111 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3112 struct net_device *dev = info->user_ptr[1]; 3113 struct wireless_dev *wdev = dev->ieee80211_ptr; 3114 struct cfg80211_ap_settings params; 3115 int err; 3116 u8 radar_detect_width = 0; 3117 3118 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3119 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3120 return -EOPNOTSUPP; 3121 3122 if (!rdev->ops->start_ap) 3123 return -EOPNOTSUPP; 3124 3125 if (wdev->beacon_interval) 3126 return -EALREADY; 3127 3128 memset(¶ms, 0, sizeof(params)); 3129 3130 /* these are required for START_AP */ 3131 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3132 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3133 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3134 return -EINVAL; 3135 3136 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3137 if (err) 3138 return err; 3139 3140 params.beacon_interval = 3141 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3142 params.dtim_period = 3143 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3144 3145 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3146 if (err) 3147 return err; 3148 3149 /* 3150 * In theory, some of these attributes should be required here 3151 * but since they were not used when the command was originally 3152 * added, keep them optional for old user space programs to let 3153 * them continue to work with drivers that do not need the 3154 * additional information -- drivers must check! 3155 */ 3156 if (info->attrs[NL80211_ATTR_SSID]) { 3157 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3158 params.ssid_len = 3159 nla_len(info->attrs[NL80211_ATTR_SSID]); 3160 if (params.ssid_len == 0 || 3161 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3162 return -EINVAL; 3163 } 3164 3165 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3166 params.hidden_ssid = nla_get_u32( 3167 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3168 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3169 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3170 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3171 return -EINVAL; 3172 } 3173 3174 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3175 3176 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3177 params.auth_type = nla_get_u32( 3178 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3179 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3180 NL80211_CMD_START_AP)) 3181 return -EINVAL; 3182 } else 3183 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3184 3185 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3186 NL80211_MAX_NR_CIPHER_SUITES); 3187 if (err) 3188 return err; 3189 3190 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3191 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3192 return -EOPNOTSUPP; 3193 params.inactivity_timeout = nla_get_u16( 3194 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3195 } 3196 3197 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3198 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3199 return -EINVAL; 3200 params.p2p_ctwindow = 3201 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3202 if (params.p2p_ctwindow > 127) 3203 return -EINVAL; 3204 if (params.p2p_ctwindow != 0 && 3205 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3206 return -EINVAL; 3207 } 3208 3209 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3210 u8 tmp; 3211 3212 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3213 return -EINVAL; 3214 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3215 if (tmp > 1) 3216 return -EINVAL; 3217 params.p2p_opp_ps = tmp; 3218 if (params.p2p_opp_ps != 0 && 3219 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3220 return -EINVAL; 3221 } 3222 3223 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3224 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3225 if (err) 3226 return err; 3227 } else if (wdev->preset_chandef.chan) { 3228 params.chandef = wdev->preset_chandef; 3229 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3230 return -EINVAL; 3231 3232 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 3233 return -EINVAL; 3234 3235 err = cfg80211_chandef_dfs_required(wdev->wiphy, ¶ms.chandef); 3236 if (err < 0) 3237 return err; 3238 if (err) { 3239 radar_detect_width = BIT(params.chandef.width); 3240 params.radar_required = true; 3241 } 3242 3243 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 3244 params.chandef.chan, 3245 CHAN_MODE_SHARED, 3246 radar_detect_width); 3247 if (err) 3248 return err; 3249 3250 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3251 params.acl = parse_acl_data(&rdev->wiphy, info); 3252 if (IS_ERR(params.acl)) 3253 return PTR_ERR(params.acl); 3254 } 3255 3256 wdev_lock(wdev); 3257 err = rdev_start_ap(rdev, dev, ¶ms); 3258 if (!err) { 3259 wdev->preset_chandef = params.chandef; 3260 wdev->beacon_interval = params.beacon_interval; 3261 wdev->channel = params.chandef.chan; 3262 wdev->ssid_len = params.ssid_len; 3263 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3264 } 3265 wdev_unlock(wdev); 3266 3267 kfree(params.acl); 3268 3269 return err; 3270 } 3271 3272 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3273 { 3274 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3275 struct net_device *dev = info->user_ptr[1]; 3276 struct wireless_dev *wdev = dev->ieee80211_ptr; 3277 struct cfg80211_beacon_data params; 3278 int err; 3279 3280 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3281 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3282 return -EOPNOTSUPP; 3283 3284 if (!rdev->ops->change_beacon) 3285 return -EOPNOTSUPP; 3286 3287 if (!wdev->beacon_interval) 3288 return -EINVAL; 3289 3290 err = nl80211_parse_beacon(info->attrs, ¶ms); 3291 if (err) 3292 return err; 3293 3294 wdev_lock(wdev); 3295 err = rdev_change_beacon(rdev, dev, ¶ms); 3296 wdev_unlock(wdev); 3297 3298 return err; 3299 } 3300 3301 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3302 { 3303 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3304 struct net_device *dev = info->user_ptr[1]; 3305 3306 return cfg80211_stop_ap(rdev, dev); 3307 } 3308 3309 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3310 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3311 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3312 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3313 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3314 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3315 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3316 }; 3317 3318 static int parse_station_flags(struct genl_info *info, 3319 enum nl80211_iftype iftype, 3320 struct station_parameters *params) 3321 { 3322 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3323 struct nlattr *nla; 3324 int flag; 3325 3326 /* 3327 * Try parsing the new attribute first so userspace 3328 * can specify both for older kernels. 3329 */ 3330 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3331 if (nla) { 3332 struct nl80211_sta_flag_update *sta_flags; 3333 3334 sta_flags = nla_data(nla); 3335 params->sta_flags_mask = sta_flags->mask; 3336 params->sta_flags_set = sta_flags->set; 3337 params->sta_flags_set &= params->sta_flags_mask; 3338 if ((params->sta_flags_mask | 3339 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3340 return -EINVAL; 3341 return 0; 3342 } 3343 3344 /* if present, parse the old attribute */ 3345 3346 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3347 if (!nla) 3348 return 0; 3349 3350 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3351 nla, sta_flags_policy)) 3352 return -EINVAL; 3353 3354 /* 3355 * Only allow certain flags for interface types so that 3356 * other attributes are silently ignored. Remember that 3357 * this is backward compatibility code with old userspace 3358 * and shouldn't be hit in other cases anyway. 3359 */ 3360 switch (iftype) { 3361 case NL80211_IFTYPE_AP: 3362 case NL80211_IFTYPE_AP_VLAN: 3363 case NL80211_IFTYPE_P2P_GO: 3364 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3365 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3366 BIT(NL80211_STA_FLAG_WME) | 3367 BIT(NL80211_STA_FLAG_MFP); 3368 break; 3369 case NL80211_IFTYPE_P2P_CLIENT: 3370 case NL80211_IFTYPE_STATION: 3371 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3372 BIT(NL80211_STA_FLAG_TDLS_PEER); 3373 break; 3374 case NL80211_IFTYPE_MESH_POINT: 3375 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3376 BIT(NL80211_STA_FLAG_MFP) | 3377 BIT(NL80211_STA_FLAG_AUTHORIZED); 3378 default: 3379 return -EINVAL; 3380 } 3381 3382 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3383 if (flags[flag]) { 3384 params->sta_flags_set |= (1<<flag); 3385 3386 /* no longer support new API additions in old API */ 3387 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3388 return -EINVAL; 3389 } 3390 } 3391 3392 return 0; 3393 } 3394 3395 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3396 int attr) 3397 { 3398 struct nlattr *rate; 3399 u32 bitrate; 3400 u16 bitrate_compat; 3401 3402 rate = nla_nest_start(msg, attr); 3403 if (!rate) 3404 return false; 3405 3406 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3407 bitrate = cfg80211_calculate_bitrate(info); 3408 /* report 16-bit bitrate only if we can */ 3409 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3410 if (bitrate > 0 && 3411 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3412 return false; 3413 if (bitrate_compat > 0 && 3414 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3415 return false; 3416 3417 if (info->flags & RATE_INFO_FLAGS_MCS) { 3418 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3419 return false; 3420 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3421 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3422 return false; 3423 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3424 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3425 return false; 3426 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3427 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3428 return false; 3429 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3430 return false; 3431 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3432 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3433 return false; 3434 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH && 3435 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH)) 3436 return false; 3437 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH && 3438 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH)) 3439 return false; 3440 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH && 3441 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH)) 3442 return false; 3443 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3444 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3445 return false; 3446 } 3447 3448 nla_nest_end(msg, rate); 3449 return true; 3450 } 3451 3452 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3453 int id) 3454 { 3455 void *attr; 3456 int i = 0; 3457 3458 if (!mask) 3459 return true; 3460 3461 attr = nla_nest_start(msg, id); 3462 if (!attr) 3463 return false; 3464 3465 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3466 if (!(mask & BIT(i))) 3467 continue; 3468 3469 if (nla_put_u8(msg, i, signal[i])) 3470 return false; 3471 } 3472 3473 nla_nest_end(msg, attr); 3474 3475 return true; 3476 } 3477 3478 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, 3479 int flags, 3480 struct cfg80211_registered_device *rdev, 3481 struct net_device *dev, 3482 const u8 *mac_addr, struct station_info *sinfo) 3483 { 3484 void *hdr; 3485 struct nlattr *sinfoattr, *bss_param; 3486 3487 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 3488 if (!hdr) 3489 return -1; 3490 3491 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3492 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3493 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3494 goto nla_put_failure; 3495 3496 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3497 if (!sinfoattr) 3498 goto nla_put_failure; 3499 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) && 3500 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME, 3501 sinfo->connected_time)) 3502 goto nla_put_failure; 3503 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) && 3504 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME, 3505 sinfo->inactive_time)) 3506 goto nla_put_failure; 3507 if ((sinfo->filled & (STATION_INFO_RX_BYTES | 3508 STATION_INFO_RX_BYTES64)) && 3509 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3510 (u32)sinfo->rx_bytes)) 3511 goto nla_put_failure; 3512 if ((sinfo->filled & (STATION_INFO_TX_BYTES | 3513 STATION_INFO_TX_BYTES64)) && 3514 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3515 (u32)sinfo->tx_bytes)) 3516 goto nla_put_failure; 3517 if ((sinfo->filled & STATION_INFO_RX_BYTES64) && 3518 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64, 3519 sinfo->rx_bytes)) 3520 goto nla_put_failure; 3521 if ((sinfo->filled & STATION_INFO_TX_BYTES64) && 3522 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64, 3523 sinfo->tx_bytes)) 3524 goto nla_put_failure; 3525 if ((sinfo->filled & STATION_INFO_LLID) && 3526 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid)) 3527 goto nla_put_failure; 3528 if ((sinfo->filled & STATION_INFO_PLID) && 3529 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid)) 3530 goto nla_put_failure; 3531 if ((sinfo->filled & STATION_INFO_PLINK_STATE) && 3532 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE, 3533 sinfo->plink_state)) 3534 goto nla_put_failure; 3535 switch (rdev->wiphy.signal_type) { 3536 case CFG80211_SIGNAL_TYPE_MBM: 3537 if ((sinfo->filled & STATION_INFO_SIGNAL) && 3538 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL, 3539 sinfo->signal)) 3540 goto nla_put_failure; 3541 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) && 3542 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG, 3543 sinfo->signal_avg)) 3544 goto nla_put_failure; 3545 break; 3546 default: 3547 break; 3548 } 3549 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) { 3550 if (!nl80211_put_signal(msg, sinfo->chains, 3551 sinfo->chain_signal, 3552 NL80211_STA_INFO_CHAIN_SIGNAL)) 3553 goto nla_put_failure; 3554 } 3555 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) { 3556 if (!nl80211_put_signal(msg, sinfo->chains, 3557 sinfo->chain_signal_avg, 3558 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3559 goto nla_put_failure; 3560 } 3561 if (sinfo->filled & STATION_INFO_TX_BITRATE) { 3562 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3563 NL80211_STA_INFO_TX_BITRATE)) 3564 goto nla_put_failure; 3565 } 3566 if (sinfo->filled & STATION_INFO_RX_BITRATE) { 3567 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3568 NL80211_STA_INFO_RX_BITRATE)) 3569 goto nla_put_failure; 3570 } 3571 if ((sinfo->filled & STATION_INFO_RX_PACKETS) && 3572 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS, 3573 sinfo->rx_packets)) 3574 goto nla_put_failure; 3575 if ((sinfo->filled & STATION_INFO_TX_PACKETS) && 3576 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS, 3577 sinfo->tx_packets)) 3578 goto nla_put_failure; 3579 if ((sinfo->filled & STATION_INFO_TX_RETRIES) && 3580 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES, 3581 sinfo->tx_retries)) 3582 goto nla_put_failure; 3583 if ((sinfo->filled & STATION_INFO_TX_FAILED) && 3584 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED, 3585 sinfo->tx_failed)) 3586 goto nla_put_failure; 3587 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) && 3588 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS, 3589 sinfo->beacon_loss_count)) 3590 goto nla_put_failure; 3591 if ((sinfo->filled & STATION_INFO_LOCAL_PM) && 3592 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM, 3593 sinfo->local_pm)) 3594 goto nla_put_failure; 3595 if ((sinfo->filled & STATION_INFO_PEER_PM) && 3596 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM, 3597 sinfo->peer_pm)) 3598 goto nla_put_failure; 3599 if ((sinfo->filled & STATION_INFO_NONPEER_PM) && 3600 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM, 3601 sinfo->nonpeer_pm)) 3602 goto nla_put_failure; 3603 if (sinfo->filled & STATION_INFO_BSS_PARAM) { 3604 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3605 if (!bss_param) 3606 goto nla_put_failure; 3607 3608 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3609 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3610 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3611 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3612 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3613 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3614 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3615 sinfo->bss_param.dtim_period) || 3616 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3617 sinfo->bss_param.beacon_interval)) 3618 goto nla_put_failure; 3619 3620 nla_nest_end(msg, bss_param); 3621 } 3622 if ((sinfo->filled & STATION_INFO_STA_FLAGS) && 3623 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3624 sizeof(struct nl80211_sta_flag_update), 3625 &sinfo->sta_flags)) 3626 goto nla_put_failure; 3627 if ((sinfo->filled & STATION_INFO_T_OFFSET) && 3628 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET, 3629 sinfo->t_offset)) 3630 goto nla_put_failure; 3631 nla_nest_end(msg, sinfoattr); 3632 3633 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) && 3634 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3635 sinfo->assoc_req_ies)) 3636 goto nla_put_failure; 3637 3638 return genlmsg_end(msg, hdr); 3639 3640 nla_put_failure: 3641 genlmsg_cancel(msg, hdr); 3642 return -EMSGSIZE; 3643 } 3644 3645 static int nl80211_dump_station(struct sk_buff *skb, 3646 struct netlink_callback *cb) 3647 { 3648 struct station_info sinfo; 3649 struct cfg80211_registered_device *dev; 3650 struct wireless_dev *wdev; 3651 u8 mac_addr[ETH_ALEN]; 3652 int sta_idx = cb->args[2]; 3653 int err; 3654 3655 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 3656 if (err) 3657 return err; 3658 3659 if (!wdev->netdev) { 3660 err = -EINVAL; 3661 goto out_err; 3662 } 3663 3664 if (!dev->ops->dump_station) { 3665 err = -EOPNOTSUPP; 3666 goto out_err; 3667 } 3668 3669 while (1) { 3670 memset(&sinfo, 0, sizeof(sinfo)); 3671 err = rdev_dump_station(dev, wdev->netdev, sta_idx, 3672 mac_addr, &sinfo); 3673 if (err == -ENOENT) 3674 break; 3675 if (err) 3676 goto out_err; 3677 3678 if (nl80211_send_station(skb, 3679 NETLINK_CB(cb->skb).portid, 3680 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3681 dev, wdev->netdev, mac_addr, 3682 &sinfo) < 0) 3683 goto out; 3684 3685 sta_idx++; 3686 } 3687 3688 3689 out: 3690 cb->args[2] = sta_idx; 3691 err = skb->len; 3692 out_err: 3693 nl80211_finish_wdev_dump(dev); 3694 3695 return err; 3696 } 3697 3698 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3699 { 3700 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3701 struct net_device *dev = info->user_ptr[1]; 3702 struct station_info sinfo; 3703 struct sk_buff *msg; 3704 u8 *mac_addr = NULL; 3705 int err; 3706 3707 memset(&sinfo, 0, sizeof(sinfo)); 3708 3709 if (!info->attrs[NL80211_ATTR_MAC]) 3710 return -EINVAL; 3711 3712 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3713 3714 if (!rdev->ops->get_station) 3715 return -EOPNOTSUPP; 3716 3717 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3718 if (err) 3719 return err; 3720 3721 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3722 if (!msg) 3723 return -ENOMEM; 3724 3725 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0, 3726 rdev, dev, mac_addr, &sinfo) < 0) { 3727 nlmsg_free(msg); 3728 return -ENOBUFS; 3729 } 3730 3731 return genlmsg_reply(msg, info); 3732 } 3733 3734 int cfg80211_check_station_change(struct wiphy *wiphy, 3735 struct station_parameters *params, 3736 enum cfg80211_station_type statype) 3737 { 3738 if (params->listen_interval != -1) 3739 return -EINVAL; 3740 if (params->aid) 3741 return -EINVAL; 3742 3743 /* When you run into this, adjust the code below for the new flag */ 3744 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3745 3746 switch (statype) { 3747 case CFG80211_STA_MESH_PEER_KERNEL: 3748 case CFG80211_STA_MESH_PEER_USER: 3749 /* 3750 * No ignoring the TDLS flag here -- the userspace mesh 3751 * code doesn't have the bug of including TDLS in the 3752 * mask everywhere. 3753 */ 3754 if (params->sta_flags_mask & 3755 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3756 BIT(NL80211_STA_FLAG_MFP) | 3757 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3758 return -EINVAL; 3759 break; 3760 case CFG80211_STA_TDLS_PEER_SETUP: 3761 case CFG80211_STA_TDLS_PEER_ACTIVE: 3762 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3763 return -EINVAL; 3764 /* ignore since it can't change */ 3765 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3766 break; 3767 default: 3768 /* disallow mesh-specific things */ 3769 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3770 return -EINVAL; 3771 if (params->local_pm) 3772 return -EINVAL; 3773 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3774 return -EINVAL; 3775 } 3776 3777 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3778 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3779 /* TDLS can't be set, ... */ 3780 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3781 return -EINVAL; 3782 /* 3783 * ... but don't bother the driver with it. This works around 3784 * a hostapd/wpa_supplicant issue -- it always includes the 3785 * TLDS_PEER flag in the mask even for AP mode. 3786 */ 3787 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3788 } 3789 3790 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 3791 /* reject other things that can't change */ 3792 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 3793 return -EINVAL; 3794 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 3795 return -EINVAL; 3796 if (params->supported_rates) 3797 return -EINVAL; 3798 if (params->ext_capab || params->ht_capa || params->vht_capa) 3799 return -EINVAL; 3800 } 3801 3802 if (statype != CFG80211_STA_AP_CLIENT) { 3803 if (params->vlan) 3804 return -EINVAL; 3805 } 3806 3807 switch (statype) { 3808 case CFG80211_STA_AP_MLME_CLIENT: 3809 /* Use this only for authorizing/unauthorizing a station */ 3810 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 3811 return -EOPNOTSUPP; 3812 break; 3813 case CFG80211_STA_AP_CLIENT: 3814 /* accept only the listed bits */ 3815 if (params->sta_flags_mask & 3816 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3817 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3818 BIT(NL80211_STA_FLAG_ASSOCIATED) | 3819 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3820 BIT(NL80211_STA_FLAG_WME) | 3821 BIT(NL80211_STA_FLAG_MFP))) 3822 return -EINVAL; 3823 3824 /* but authenticated/associated only if driver handles it */ 3825 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 3826 params->sta_flags_mask & 3827 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3828 BIT(NL80211_STA_FLAG_ASSOCIATED))) 3829 return -EINVAL; 3830 break; 3831 case CFG80211_STA_IBSS: 3832 case CFG80211_STA_AP_STA: 3833 /* reject any changes other than AUTHORIZED */ 3834 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 3835 return -EINVAL; 3836 break; 3837 case CFG80211_STA_TDLS_PEER_SETUP: 3838 /* reject any changes other than AUTHORIZED or WME */ 3839 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3840 BIT(NL80211_STA_FLAG_WME))) 3841 return -EINVAL; 3842 /* force (at least) rates when authorizing */ 3843 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 3844 !params->supported_rates) 3845 return -EINVAL; 3846 break; 3847 case CFG80211_STA_TDLS_PEER_ACTIVE: 3848 /* reject any changes */ 3849 return -EINVAL; 3850 case CFG80211_STA_MESH_PEER_KERNEL: 3851 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3852 return -EINVAL; 3853 break; 3854 case CFG80211_STA_MESH_PEER_USER: 3855 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3856 return -EINVAL; 3857 break; 3858 } 3859 3860 return 0; 3861 } 3862 EXPORT_SYMBOL(cfg80211_check_station_change); 3863 3864 /* 3865 * Get vlan interface making sure it is running and on the right wiphy. 3866 */ 3867 static struct net_device *get_vlan(struct genl_info *info, 3868 struct cfg80211_registered_device *rdev) 3869 { 3870 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 3871 struct net_device *v; 3872 int ret; 3873 3874 if (!vlanattr) 3875 return NULL; 3876 3877 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 3878 if (!v) 3879 return ERR_PTR(-ENODEV); 3880 3881 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 3882 ret = -EINVAL; 3883 goto error; 3884 } 3885 3886 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 3887 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3888 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 3889 ret = -EINVAL; 3890 goto error; 3891 } 3892 3893 if (!netif_running(v)) { 3894 ret = -ENETDOWN; 3895 goto error; 3896 } 3897 3898 return v; 3899 error: 3900 dev_put(v); 3901 return ERR_PTR(ret); 3902 } 3903 3904 static struct nla_policy 3905 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] __read_mostly = { 3906 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 3907 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 3908 }; 3909 3910 static int nl80211_parse_sta_wme(struct genl_info *info, 3911 struct station_parameters *params) 3912 { 3913 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 3914 struct nlattr *nla; 3915 int err; 3916 3917 /* parse WME attributes if present */ 3918 if (!info->attrs[NL80211_ATTR_STA_WME]) 3919 return 0; 3920 3921 nla = info->attrs[NL80211_ATTR_STA_WME]; 3922 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 3923 nl80211_sta_wme_policy); 3924 if (err) 3925 return err; 3926 3927 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 3928 params->uapsd_queues = nla_get_u8( 3929 tb[NL80211_STA_WME_UAPSD_QUEUES]); 3930 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 3931 return -EINVAL; 3932 3933 if (tb[NL80211_STA_WME_MAX_SP]) 3934 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 3935 3936 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 3937 return -EINVAL; 3938 3939 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 3940 3941 return 0; 3942 } 3943 3944 static int nl80211_parse_sta_channel_info(struct genl_info *info, 3945 struct station_parameters *params) 3946 { 3947 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 3948 params->supported_channels = 3949 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 3950 params->supported_channels_len = 3951 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 3952 /* 3953 * Need to include at least one (first channel, number of 3954 * channels) tuple for each subband, and must have proper 3955 * tuples for the rest of the data as well. 3956 */ 3957 if (params->supported_channels_len < 2) 3958 return -EINVAL; 3959 if (params->supported_channels_len % 2) 3960 return -EINVAL; 3961 } 3962 3963 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 3964 params->supported_oper_classes = 3965 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 3966 params->supported_oper_classes_len = 3967 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 3968 /* 3969 * The value of the Length field of the Supported Operating 3970 * Classes element is between 2 and 253. 3971 */ 3972 if (params->supported_oper_classes_len < 2 || 3973 params->supported_oper_classes_len > 253) 3974 return -EINVAL; 3975 } 3976 return 0; 3977 } 3978 3979 static int nl80211_set_station_tdls(struct genl_info *info, 3980 struct station_parameters *params) 3981 { 3982 int err; 3983 /* Dummy STA entry gets updated once the peer capabilities are known */ 3984 if (info->attrs[NL80211_ATTR_PEER_AID]) 3985 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 3986 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 3987 params->ht_capa = 3988 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 3989 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 3990 params->vht_capa = 3991 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 3992 3993 err = nl80211_parse_sta_channel_info(info, params); 3994 if (err) 3995 return err; 3996 3997 return nl80211_parse_sta_wme(info, params); 3998 } 3999 4000 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4001 { 4002 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4003 struct net_device *dev = info->user_ptr[1]; 4004 struct station_parameters params; 4005 u8 *mac_addr; 4006 int err; 4007 4008 memset(¶ms, 0, sizeof(params)); 4009 4010 params.listen_interval = -1; 4011 4012 if (!rdev->ops->change_station) 4013 return -EOPNOTSUPP; 4014 4015 if (info->attrs[NL80211_ATTR_STA_AID]) 4016 return -EINVAL; 4017 4018 if (!info->attrs[NL80211_ATTR_MAC]) 4019 return -EINVAL; 4020 4021 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4022 4023 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4024 params.supported_rates = 4025 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4026 params.supported_rates_len = 4027 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4028 } 4029 4030 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4031 params.capability = 4032 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4033 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4034 } 4035 4036 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4037 params.ext_capab = 4038 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4039 params.ext_capab_len = 4040 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4041 } 4042 4043 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4044 return -EINVAL; 4045 4046 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4047 return -EINVAL; 4048 4049 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4050 params.plink_action = 4051 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4052 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4053 return -EINVAL; 4054 } 4055 4056 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4057 params.plink_state = 4058 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4059 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4060 return -EINVAL; 4061 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4062 } 4063 4064 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4065 enum nl80211_mesh_power_mode pm = nla_get_u32( 4066 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4067 4068 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4069 pm > NL80211_MESH_POWER_MAX) 4070 return -EINVAL; 4071 4072 params.local_pm = pm; 4073 } 4074 4075 /* Include parameters for TDLS peer (will check later) */ 4076 err = nl80211_set_station_tdls(info, ¶ms); 4077 if (err) 4078 return err; 4079 4080 params.vlan = get_vlan(info, rdev); 4081 if (IS_ERR(params.vlan)) 4082 return PTR_ERR(params.vlan); 4083 4084 switch (dev->ieee80211_ptr->iftype) { 4085 case NL80211_IFTYPE_AP: 4086 case NL80211_IFTYPE_AP_VLAN: 4087 case NL80211_IFTYPE_P2P_GO: 4088 case NL80211_IFTYPE_P2P_CLIENT: 4089 case NL80211_IFTYPE_STATION: 4090 case NL80211_IFTYPE_ADHOC: 4091 case NL80211_IFTYPE_MESH_POINT: 4092 break; 4093 default: 4094 err = -EOPNOTSUPP; 4095 goto out_put_vlan; 4096 } 4097 4098 /* driver will call cfg80211_check_station_change() */ 4099 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4100 4101 out_put_vlan: 4102 if (params.vlan) 4103 dev_put(params.vlan); 4104 4105 return err; 4106 } 4107 4108 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4109 { 4110 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4111 int err; 4112 struct net_device *dev = info->user_ptr[1]; 4113 struct station_parameters params; 4114 u8 *mac_addr = NULL; 4115 4116 memset(¶ms, 0, sizeof(params)); 4117 4118 if (!rdev->ops->add_station) 4119 return -EOPNOTSUPP; 4120 4121 if (!info->attrs[NL80211_ATTR_MAC]) 4122 return -EINVAL; 4123 4124 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4125 return -EINVAL; 4126 4127 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4128 return -EINVAL; 4129 4130 if (!info->attrs[NL80211_ATTR_STA_AID] && 4131 !info->attrs[NL80211_ATTR_PEER_AID]) 4132 return -EINVAL; 4133 4134 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4135 params.supported_rates = 4136 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4137 params.supported_rates_len = 4138 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4139 params.listen_interval = 4140 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4141 4142 if (info->attrs[NL80211_ATTR_PEER_AID]) 4143 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4144 else 4145 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4146 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4147 return -EINVAL; 4148 4149 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4150 params.capability = 4151 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4152 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4153 } 4154 4155 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4156 params.ext_capab = 4157 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4158 params.ext_capab_len = 4159 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4160 } 4161 4162 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4163 params.ht_capa = 4164 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4165 4166 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4167 params.vht_capa = 4168 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4169 4170 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4171 params.opmode_notif_used = true; 4172 params.opmode_notif = 4173 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4174 } 4175 4176 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4177 params.plink_action = 4178 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4179 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4180 return -EINVAL; 4181 } 4182 4183 err = nl80211_parse_sta_channel_info(info, ¶ms); 4184 if (err) 4185 return err; 4186 4187 err = nl80211_parse_sta_wme(info, ¶ms); 4188 if (err) 4189 return err; 4190 4191 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4192 return -EINVAL; 4193 4194 /* When you run into this, adjust the code below for the new flag */ 4195 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4196 4197 switch (dev->ieee80211_ptr->iftype) { 4198 case NL80211_IFTYPE_AP: 4199 case NL80211_IFTYPE_AP_VLAN: 4200 case NL80211_IFTYPE_P2P_GO: 4201 /* ignore WME attributes if iface/sta is not capable */ 4202 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4203 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4204 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4205 4206 /* TDLS peers cannot be added */ 4207 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4208 info->attrs[NL80211_ATTR_PEER_AID]) 4209 return -EINVAL; 4210 /* but don't bother the driver with it */ 4211 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4212 4213 /* allow authenticated/associated only if driver handles it */ 4214 if (!(rdev->wiphy.features & 4215 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4216 params.sta_flags_mask & 4217 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4218 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4219 return -EINVAL; 4220 4221 /* must be last in here for error handling */ 4222 params.vlan = get_vlan(info, rdev); 4223 if (IS_ERR(params.vlan)) 4224 return PTR_ERR(params.vlan); 4225 break; 4226 case NL80211_IFTYPE_MESH_POINT: 4227 /* ignore uAPSD data */ 4228 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4229 4230 /* associated is disallowed */ 4231 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4232 return -EINVAL; 4233 /* TDLS peers cannot be added */ 4234 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4235 info->attrs[NL80211_ATTR_PEER_AID]) 4236 return -EINVAL; 4237 break; 4238 case NL80211_IFTYPE_STATION: 4239 case NL80211_IFTYPE_P2P_CLIENT: 4240 /* ignore uAPSD data */ 4241 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4242 4243 /* these are disallowed */ 4244 if (params.sta_flags_mask & 4245 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4246 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4247 return -EINVAL; 4248 /* Only TDLS peers can be added */ 4249 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4250 return -EINVAL; 4251 /* Can only add if TDLS ... */ 4252 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4253 return -EOPNOTSUPP; 4254 /* ... with external setup is supported */ 4255 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4256 return -EOPNOTSUPP; 4257 /* 4258 * Older wpa_supplicant versions always mark the TDLS peer 4259 * as authorized, but it shouldn't yet be. 4260 */ 4261 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4262 break; 4263 default: 4264 return -EOPNOTSUPP; 4265 } 4266 4267 /* be aware of params.vlan when changing code here */ 4268 4269 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4270 4271 if (params.vlan) 4272 dev_put(params.vlan); 4273 return err; 4274 } 4275 4276 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4277 { 4278 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4279 struct net_device *dev = info->user_ptr[1]; 4280 u8 *mac_addr = NULL; 4281 4282 if (info->attrs[NL80211_ATTR_MAC]) 4283 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4284 4285 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4286 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4288 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4289 return -EINVAL; 4290 4291 if (!rdev->ops->del_station) 4292 return -EOPNOTSUPP; 4293 4294 return rdev_del_station(rdev, dev, mac_addr); 4295 } 4296 4297 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4298 int flags, struct net_device *dev, 4299 u8 *dst, u8 *next_hop, 4300 struct mpath_info *pinfo) 4301 { 4302 void *hdr; 4303 struct nlattr *pinfoattr; 4304 4305 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 4306 if (!hdr) 4307 return -1; 4308 4309 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4310 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4311 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4312 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4313 goto nla_put_failure; 4314 4315 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4316 if (!pinfoattr) 4317 goto nla_put_failure; 4318 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4319 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4320 pinfo->frame_qlen)) 4321 goto nla_put_failure; 4322 if (((pinfo->filled & MPATH_INFO_SN) && 4323 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4324 ((pinfo->filled & MPATH_INFO_METRIC) && 4325 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4326 pinfo->metric)) || 4327 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4328 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4329 pinfo->exptime)) || 4330 ((pinfo->filled & MPATH_INFO_FLAGS) && 4331 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4332 pinfo->flags)) || 4333 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4334 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4335 pinfo->discovery_timeout)) || 4336 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4337 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4338 pinfo->discovery_retries))) 4339 goto nla_put_failure; 4340 4341 nla_nest_end(msg, pinfoattr); 4342 4343 return genlmsg_end(msg, hdr); 4344 4345 nla_put_failure: 4346 genlmsg_cancel(msg, hdr); 4347 return -EMSGSIZE; 4348 } 4349 4350 static int nl80211_dump_mpath(struct sk_buff *skb, 4351 struct netlink_callback *cb) 4352 { 4353 struct mpath_info pinfo; 4354 struct cfg80211_registered_device *dev; 4355 struct wireless_dev *wdev; 4356 u8 dst[ETH_ALEN]; 4357 u8 next_hop[ETH_ALEN]; 4358 int path_idx = cb->args[2]; 4359 int err; 4360 4361 err = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 4362 if (err) 4363 return err; 4364 4365 if (!dev->ops->dump_mpath) { 4366 err = -EOPNOTSUPP; 4367 goto out_err; 4368 } 4369 4370 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4371 err = -EOPNOTSUPP; 4372 goto out_err; 4373 } 4374 4375 while (1) { 4376 err = rdev_dump_mpath(dev, wdev->netdev, path_idx, dst, 4377 next_hop, &pinfo); 4378 if (err == -ENOENT) 4379 break; 4380 if (err) 4381 goto out_err; 4382 4383 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4384 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4385 wdev->netdev, dst, next_hop, 4386 &pinfo) < 0) 4387 goto out; 4388 4389 path_idx++; 4390 } 4391 4392 4393 out: 4394 cb->args[2] = path_idx; 4395 err = skb->len; 4396 out_err: 4397 nl80211_finish_wdev_dump(dev); 4398 return err; 4399 } 4400 4401 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4402 { 4403 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4404 int err; 4405 struct net_device *dev = info->user_ptr[1]; 4406 struct mpath_info pinfo; 4407 struct sk_buff *msg; 4408 u8 *dst = NULL; 4409 u8 next_hop[ETH_ALEN]; 4410 4411 memset(&pinfo, 0, sizeof(pinfo)); 4412 4413 if (!info->attrs[NL80211_ATTR_MAC]) 4414 return -EINVAL; 4415 4416 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4417 4418 if (!rdev->ops->get_mpath) 4419 return -EOPNOTSUPP; 4420 4421 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4422 return -EOPNOTSUPP; 4423 4424 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4425 if (err) 4426 return err; 4427 4428 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4429 if (!msg) 4430 return -ENOMEM; 4431 4432 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4433 dev, dst, next_hop, &pinfo) < 0) { 4434 nlmsg_free(msg); 4435 return -ENOBUFS; 4436 } 4437 4438 return genlmsg_reply(msg, info); 4439 } 4440 4441 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4442 { 4443 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4444 struct net_device *dev = info->user_ptr[1]; 4445 u8 *dst = NULL; 4446 u8 *next_hop = NULL; 4447 4448 if (!info->attrs[NL80211_ATTR_MAC]) 4449 return -EINVAL; 4450 4451 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4452 return -EINVAL; 4453 4454 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4455 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4456 4457 if (!rdev->ops->change_mpath) 4458 return -EOPNOTSUPP; 4459 4460 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4461 return -EOPNOTSUPP; 4462 4463 return rdev_change_mpath(rdev, dev, dst, next_hop); 4464 } 4465 4466 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4467 { 4468 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4469 struct net_device *dev = info->user_ptr[1]; 4470 u8 *dst = NULL; 4471 u8 *next_hop = NULL; 4472 4473 if (!info->attrs[NL80211_ATTR_MAC]) 4474 return -EINVAL; 4475 4476 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4477 return -EINVAL; 4478 4479 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4480 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4481 4482 if (!rdev->ops->add_mpath) 4483 return -EOPNOTSUPP; 4484 4485 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4486 return -EOPNOTSUPP; 4487 4488 return rdev_add_mpath(rdev, dev, dst, next_hop); 4489 } 4490 4491 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4492 { 4493 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4494 struct net_device *dev = info->user_ptr[1]; 4495 u8 *dst = NULL; 4496 4497 if (info->attrs[NL80211_ATTR_MAC]) 4498 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4499 4500 if (!rdev->ops->del_mpath) 4501 return -EOPNOTSUPP; 4502 4503 return rdev_del_mpath(rdev, dev, dst); 4504 } 4505 4506 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4507 { 4508 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4509 struct net_device *dev = info->user_ptr[1]; 4510 struct wireless_dev *wdev = dev->ieee80211_ptr; 4511 struct bss_parameters params; 4512 int err; 4513 4514 memset(¶ms, 0, sizeof(params)); 4515 /* default to not changing parameters */ 4516 params.use_cts_prot = -1; 4517 params.use_short_preamble = -1; 4518 params.use_short_slot_time = -1; 4519 params.ap_isolate = -1; 4520 params.ht_opmode = -1; 4521 params.p2p_ctwindow = -1; 4522 params.p2p_opp_ps = -1; 4523 4524 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4525 params.use_cts_prot = 4526 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4527 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4528 params.use_short_preamble = 4529 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4530 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4531 params.use_short_slot_time = 4532 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4533 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4534 params.basic_rates = 4535 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4536 params.basic_rates_len = 4537 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4538 } 4539 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4540 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4541 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4542 params.ht_opmode = 4543 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4544 4545 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4546 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4547 return -EINVAL; 4548 params.p2p_ctwindow = 4549 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4550 if (params.p2p_ctwindow < 0) 4551 return -EINVAL; 4552 if (params.p2p_ctwindow != 0 && 4553 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4554 return -EINVAL; 4555 } 4556 4557 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4558 u8 tmp; 4559 4560 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4561 return -EINVAL; 4562 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4563 if (tmp > 1) 4564 return -EINVAL; 4565 params.p2p_opp_ps = tmp; 4566 if (params.p2p_opp_ps && 4567 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4568 return -EINVAL; 4569 } 4570 4571 if (!rdev->ops->change_bss) 4572 return -EOPNOTSUPP; 4573 4574 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4575 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4576 return -EOPNOTSUPP; 4577 4578 wdev_lock(wdev); 4579 err = rdev_change_bss(rdev, dev, ¶ms); 4580 wdev_unlock(wdev); 4581 4582 return err; 4583 } 4584 4585 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4586 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4587 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4588 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4589 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4590 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4591 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4592 }; 4593 4594 static int parse_reg_rule(struct nlattr *tb[], 4595 struct ieee80211_reg_rule *reg_rule) 4596 { 4597 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4598 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4599 4600 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4601 return -EINVAL; 4602 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4603 return -EINVAL; 4604 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4605 return -EINVAL; 4606 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4607 return -EINVAL; 4608 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4609 return -EINVAL; 4610 4611 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4612 4613 freq_range->start_freq_khz = 4614 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4615 freq_range->end_freq_khz = 4616 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4617 freq_range->max_bandwidth_khz = 4618 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4619 4620 power_rule->max_eirp = 4621 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4622 4623 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4624 power_rule->max_antenna_gain = 4625 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4626 4627 return 0; 4628 } 4629 4630 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4631 { 4632 int r; 4633 char *data = NULL; 4634 enum nl80211_user_reg_hint_type user_reg_hint_type; 4635 4636 /* 4637 * You should only get this when cfg80211 hasn't yet initialized 4638 * completely when built-in to the kernel right between the time 4639 * window between nl80211_init() and regulatory_init(), if that is 4640 * even possible. 4641 */ 4642 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4643 return -EINPROGRESS; 4644 4645 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4646 return -EINVAL; 4647 4648 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4649 4650 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4651 user_reg_hint_type = 4652 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4653 else 4654 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4655 4656 switch (user_reg_hint_type) { 4657 case NL80211_USER_REG_HINT_USER: 4658 case NL80211_USER_REG_HINT_CELL_BASE: 4659 break; 4660 default: 4661 return -EINVAL; 4662 } 4663 4664 r = regulatory_hint_user(data, user_reg_hint_type); 4665 4666 return r; 4667 } 4668 4669 static int nl80211_get_mesh_config(struct sk_buff *skb, 4670 struct genl_info *info) 4671 { 4672 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4673 struct net_device *dev = info->user_ptr[1]; 4674 struct wireless_dev *wdev = dev->ieee80211_ptr; 4675 struct mesh_config cur_params; 4676 int err = 0; 4677 void *hdr; 4678 struct nlattr *pinfoattr; 4679 struct sk_buff *msg; 4680 4681 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4682 return -EOPNOTSUPP; 4683 4684 if (!rdev->ops->get_mesh_config) 4685 return -EOPNOTSUPP; 4686 4687 wdev_lock(wdev); 4688 /* If not connected, get default parameters */ 4689 if (!wdev->mesh_id_len) 4690 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 4691 else 4692 err = rdev_get_mesh_config(rdev, dev, &cur_params); 4693 wdev_unlock(wdev); 4694 4695 if (err) 4696 return err; 4697 4698 /* Draw up a netlink message to send back */ 4699 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4700 if (!msg) 4701 return -ENOMEM; 4702 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4703 NL80211_CMD_GET_MESH_CONFIG); 4704 if (!hdr) 4705 goto out; 4706 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 4707 if (!pinfoattr) 4708 goto nla_put_failure; 4709 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4710 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 4711 cur_params.dot11MeshRetryTimeout) || 4712 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4713 cur_params.dot11MeshConfirmTimeout) || 4714 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 4715 cur_params.dot11MeshHoldingTimeout) || 4716 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 4717 cur_params.dot11MeshMaxPeerLinks) || 4718 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 4719 cur_params.dot11MeshMaxRetries) || 4720 nla_put_u8(msg, NL80211_MESHCONF_TTL, 4721 cur_params.dot11MeshTTL) || 4722 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 4723 cur_params.element_ttl) || 4724 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4725 cur_params.auto_open_plinks) || 4726 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4727 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 4728 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4729 cur_params.dot11MeshHWMPmaxPREQretries) || 4730 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 4731 cur_params.path_refresh_time) || 4732 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4733 cur_params.min_discovery_timeout) || 4734 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4735 cur_params.dot11MeshHWMPactivePathTimeout) || 4736 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4737 cur_params.dot11MeshHWMPpreqMinInterval) || 4738 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4739 cur_params.dot11MeshHWMPperrMinInterval) || 4740 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4741 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 4742 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 4743 cur_params.dot11MeshHWMPRootMode) || 4744 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4745 cur_params.dot11MeshHWMPRannInterval) || 4746 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4747 cur_params.dot11MeshGateAnnouncementProtocol) || 4748 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 4749 cur_params.dot11MeshForwarding) || 4750 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 4751 cur_params.rssi_threshold) || 4752 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 4753 cur_params.ht_opmode) || 4754 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4755 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 4756 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4757 cur_params.dot11MeshHWMProotInterval) || 4758 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4759 cur_params.dot11MeshHWMPconfirmationInterval) || 4760 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 4761 cur_params.power_mode) || 4762 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 4763 cur_params.dot11MeshAwakeWindowDuration) || 4764 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 4765 cur_params.plink_timeout)) 4766 goto nla_put_failure; 4767 nla_nest_end(msg, pinfoattr); 4768 genlmsg_end(msg, hdr); 4769 return genlmsg_reply(msg, info); 4770 4771 nla_put_failure: 4772 genlmsg_cancel(msg, hdr); 4773 out: 4774 nlmsg_free(msg); 4775 return -ENOBUFS; 4776 } 4777 4778 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 4779 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 4780 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 4781 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 4782 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 4783 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 4784 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 4785 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 4786 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 4787 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 4788 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 4789 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 4790 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 4791 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 4792 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 4793 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 4794 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 4795 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 4796 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 4797 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 4798 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 4799 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 4800 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 4801 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 4802 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 4803 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 4804 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 4805 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 4806 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 4807 }; 4808 4809 static const struct nla_policy 4810 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 4811 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 4812 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 4813 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 4814 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 4815 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 4816 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 4817 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 4818 .len = IEEE80211_MAX_DATA_LEN }, 4819 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 4820 }; 4821 4822 static int nl80211_parse_mesh_config(struct genl_info *info, 4823 struct mesh_config *cfg, 4824 u32 *mask_out) 4825 { 4826 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 4827 u32 mask = 0; 4828 4829 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 4830 do { \ 4831 if (tb[attr]) { \ 4832 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 4833 return -EINVAL; \ 4834 cfg->param = fn(tb[attr]); \ 4835 mask |= (1 << (attr - 1)); \ 4836 } \ 4837 } while (0) 4838 4839 4840 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 4841 return -EINVAL; 4842 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 4843 info->attrs[NL80211_ATTR_MESH_CONFIG], 4844 nl80211_meshconf_params_policy)) 4845 return -EINVAL; 4846 4847 /* This makes sure that there aren't more than 32 mesh config 4848 * parameters (otherwise our bitfield scheme would not work.) */ 4849 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 4850 4851 /* Fill in the params struct */ 4852 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 4853 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 4854 nla_get_u16); 4855 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 4856 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4857 nla_get_u16); 4858 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 4859 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 4860 nla_get_u16); 4861 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 4862 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 4863 nla_get_u16); 4864 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 4865 mask, NL80211_MESHCONF_MAX_RETRIES, 4866 nla_get_u8); 4867 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 4868 mask, NL80211_MESHCONF_TTL, nla_get_u8); 4869 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 4870 mask, NL80211_MESHCONF_ELEMENT_TTL, 4871 nla_get_u8); 4872 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 4873 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 4874 nla_get_u8); 4875 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 4876 1, 255, mask, 4877 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 4878 nla_get_u32); 4879 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 4880 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 4881 nla_get_u8); 4882 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 4883 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 4884 nla_get_u32); 4885 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 4886 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 4887 nla_get_u16); 4888 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 4889 1, 65535, mask, 4890 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 4891 nla_get_u32); 4892 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 4893 1, 65535, mask, 4894 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 4895 nla_get_u16); 4896 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 4897 1, 65535, mask, 4898 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 4899 nla_get_u16); 4900 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4901 dot11MeshHWMPnetDiameterTraversalTime, 4902 1, 65535, mask, 4903 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 4904 nla_get_u16); 4905 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 4906 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 4907 nla_get_u8); 4908 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 4909 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 4910 nla_get_u16); 4911 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4912 dot11MeshGateAnnouncementProtocol, 0, 1, 4913 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 4914 nla_get_u8); 4915 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 4916 mask, NL80211_MESHCONF_FORWARDING, 4917 nla_get_u8); 4918 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 4919 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 4920 nla_get_s32); 4921 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 4922 mask, NL80211_MESHCONF_HT_OPMODE, 4923 nla_get_u16); 4924 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 4925 1, 65535, mask, 4926 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 4927 nla_get_u32); 4928 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 4929 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 4930 nla_get_u16); 4931 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 4932 dot11MeshHWMPconfirmationInterval, 4933 1, 65535, mask, 4934 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 4935 nla_get_u16); 4936 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 4937 NL80211_MESH_POWER_ACTIVE, 4938 NL80211_MESH_POWER_MAX, 4939 mask, NL80211_MESHCONF_POWER_MODE, 4940 nla_get_u32); 4941 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 4942 0, 65535, mask, 4943 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 4944 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff, 4945 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 4946 nla_get_u32); 4947 if (mask_out) 4948 *mask_out = mask; 4949 4950 return 0; 4951 4952 #undef FILL_IN_MESH_PARAM_IF_SET 4953 } 4954 4955 static int nl80211_parse_mesh_setup(struct genl_info *info, 4956 struct mesh_setup *setup) 4957 { 4958 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4959 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 4960 4961 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 4962 return -EINVAL; 4963 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 4964 info->attrs[NL80211_ATTR_MESH_SETUP], 4965 nl80211_mesh_setup_params_policy)) 4966 return -EINVAL; 4967 4968 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 4969 setup->sync_method = 4970 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 4971 IEEE80211_SYNC_METHOD_VENDOR : 4972 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 4973 4974 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 4975 setup->path_sel_proto = 4976 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 4977 IEEE80211_PATH_PROTOCOL_VENDOR : 4978 IEEE80211_PATH_PROTOCOL_HWMP; 4979 4980 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 4981 setup->path_metric = 4982 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 4983 IEEE80211_PATH_METRIC_VENDOR : 4984 IEEE80211_PATH_METRIC_AIRTIME; 4985 4986 4987 if (tb[NL80211_MESH_SETUP_IE]) { 4988 struct nlattr *ieattr = 4989 tb[NL80211_MESH_SETUP_IE]; 4990 if (!is_valid_ie_attr(ieattr)) 4991 return -EINVAL; 4992 setup->ie = nla_data(ieattr); 4993 setup->ie_len = nla_len(ieattr); 4994 } 4995 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 4996 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 4997 return -EINVAL; 4998 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 4999 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5000 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5001 if (setup->is_secure) 5002 setup->user_mpm = true; 5003 5004 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5005 if (!setup->user_mpm) 5006 return -EINVAL; 5007 setup->auth_id = 5008 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5009 } 5010 5011 return 0; 5012 } 5013 5014 static int nl80211_update_mesh_config(struct sk_buff *skb, 5015 struct genl_info *info) 5016 { 5017 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5018 struct net_device *dev = info->user_ptr[1]; 5019 struct wireless_dev *wdev = dev->ieee80211_ptr; 5020 struct mesh_config cfg; 5021 u32 mask; 5022 int err; 5023 5024 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5025 return -EOPNOTSUPP; 5026 5027 if (!rdev->ops->update_mesh_config) 5028 return -EOPNOTSUPP; 5029 5030 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5031 if (err) 5032 return err; 5033 5034 wdev_lock(wdev); 5035 if (!wdev->mesh_id_len) 5036 err = -ENOLINK; 5037 5038 if (!err) 5039 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5040 5041 wdev_unlock(wdev); 5042 5043 return err; 5044 } 5045 5046 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) 5047 { 5048 const struct ieee80211_regdomain *regdom; 5049 struct sk_buff *msg; 5050 void *hdr = NULL; 5051 struct nlattr *nl_reg_rules; 5052 unsigned int i; 5053 5054 if (!cfg80211_regdomain) 5055 return -EINVAL; 5056 5057 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5058 if (!msg) 5059 return -ENOBUFS; 5060 5061 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5062 NL80211_CMD_GET_REG); 5063 if (!hdr) 5064 goto put_failure; 5065 5066 if (reg_last_request_cell_base() && 5067 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5068 NL80211_USER_REG_HINT_CELL_BASE)) 5069 goto nla_put_failure; 5070 5071 rcu_read_lock(); 5072 regdom = rcu_dereference(cfg80211_regdomain); 5073 5074 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5075 (regdom->dfs_region && 5076 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5077 goto nla_put_failure_rcu; 5078 5079 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5080 if (!nl_reg_rules) 5081 goto nla_put_failure_rcu; 5082 5083 for (i = 0; i < regdom->n_reg_rules; i++) { 5084 struct nlattr *nl_reg_rule; 5085 const struct ieee80211_reg_rule *reg_rule; 5086 const struct ieee80211_freq_range *freq_range; 5087 const struct ieee80211_power_rule *power_rule; 5088 5089 reg_rule = ®dom->reg_rules[i]; 5090 freq_range = ®_rule->freq_range; 5091 power_rule = ®_rule->power_rule; 5092 5093 nl_reg_rule = nla_nest_start(msg, i); 5094 if (!nl_reg_rule) 5095 goto nla_put_failure_rcu; 5096 5097 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5098 reg_rule->flags) || 5099 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5100 freq_range->start_freq_khz) || 5101 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5102 freq_range->end_freq_khz) || 5103 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5104 freq_range->max_bandwidth_khz) || 5105 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5106 power_rule->max_antenna_gain) || 5107 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5108 power_rule->max_eirp)) 5109 goto nla_put_failure_rcu; 5110 5111 nla_nest_end(msg, nl_reg_rule); 5112 } 5113 rcu_read_unlock(); 5114 5115 nla_nest_end(msg, nl_reg_rules); 5116 5117 genlmsg_end(msg, hdr); 5118 return genlmsg_reply(msg, info); 5119 5120 nla_put_failure_rcu: 5121 rcu_read_unlock(); 5122 nla_put_failure: 5123 genlmsg_cancel(msg, hdr); 5124 put_failure: 5125 nlmsg_free(msg); 5126 return -EMSGSIZE; 5127 } 5128 5129 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5130 { 5131 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5132 struct nlattr *nl_reg_rule; 5133 char *alpha2 = NULL; 5134 int rem_reg_rules = 0, r = 0; 5135 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5136 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5137 struct ieee80211_regdomain *rd = NULL; 5138 5139 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5140 return -EINVAL; 5141 5142 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5143 return -EINVAL; 5144 5145 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5146 5147 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5148 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5149 5150 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5151 rem_reg_rules) { 5152 num_rules++; 5153 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5154 return -EINVAL; 5155 } 5156 5157 if (!reg_is_valid_request(alpha2)) 5158 return -EINVAL; 5159 5160 size_of_regd = sizeof(struct ieee80211_regdomain) + 5161 num_rules * sizeof(struct ieee80211_reg_rule); 5162 5163 rd = kzalloc(size_of_regd, GFP_KERNEL); 5164 if (!rd) 5165 return -ENOMEM; 5166 5167 rd->n_reg_rules = num_rules; 5168 rd->alpha2[0] = alpha2[0]; 5169 rd->alpha2[1] = alpha2[1]; 5170 5171 /* 5172 * Disable DFS master mode if the DFS region was 5173 * not supported or known on this kernel. 5174 */ 5175 if (reg_supported_dfs_region(dfs_region)) 5176 rd->dfs_region = dfs_region; 5177 5178 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5179 rem_reg_rules) { 5180 nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5181 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5182 reg_rule_policy); 5183 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5184 if (r) 5185 goto bad_reg; 5186 5187 rule_idx++; 5188 5189 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5190 r = -EINVAL; 5191 goto bad_reg; 5192 } 5193 } 5194 5195 r = set_regdom(rd); 5196 /* set_regdom took ownership */ 5197 rd = NULL; 5198 5199 bad_reg: 5200 kfree(rd); 5201 return r; 5202 } 5203 5204 static int validate_scan_freqs(struct nlattr *freqs) 5205 { 5206 struct nlattr *attr1, *attr2; 5207 int n_channels = 0, tmp1, tmp2; 5208 5209 nla_for_each_nested(attr1, freqs, tmp1) { 5210 n_channels++; 5211 /* 5212 * Some hardware has a limited channel list for 5213 * scanning, and it is pretty much nonsensical 5214 * to scan for a channel twice, so disallow that 5215 * and don't require drivers to check that the 5216 * channel list they get isn't longer than what 5217 * they can scan, as long as they can scan all 5218 * the channels they registered at once. 5219 */ 5220 nla_for_each_nested(attr2, freqs, tmp2) 5221 if (attr1 != attr2 && 5222 nla_get_u32(attr1) == nla_get_u32(attr2)) 5223 return 0; 5224 } 5225 5226 return n_channels; 5227 } 5228 5229 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5230 { 5231 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5232 struct wireless_dev *wdev = info->user_ptr[1]; 5233 struct cfg80211_scan_request *request; 5234 struct nlattr *attr; 5235 struct wiphy *wiphy; 5236 int err, tmp, n_ssids = 0, n_channels, i; 5237 size_t ie_len; 5238 5239 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5240 return -EINVAL; 5241 5242 wiphy = &rdev->wiphy; 5243 5244 if (!rdev->ops->scan) 5245 return -EOPNOTSUPP; 5246 5247 if (rdev->scan_req) { 5248 err = -EBUSY; 5249 goto unlock; 5250 } 5251 5252 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5253 n_channels = validate_scan_freqs( 5254 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5255 if (!n_channels) { 5256 err = -EINVAL; 5257 goto unlock; 5258 } 5259 } else { 5260 n_channels = ieee80211_get_num_supported_channels(wiphy); 5261 } 5262 5263 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5264 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5265 n_ssids++; 5266 5267 if (n_ssids > wiphy->max_scan_ssids) { 5268 err = -EINVAL; 5269 goto unlock; 5270 } 5271 5272 if (info->attrs[NL80211_ATTR_IE]) 5273 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5274 else 5275 ie_len = 0; 5276 5277 if (ie_len > wiphy->max_scan_ie_len) { 5278 err = -EINVAL; 5279 goto unlock; 5280 } 5281 5282 request = kzalloc(sizeof(*request) 5283 + sizeof(*request->ssids) * n_ssids 5284 + sizeof(*request->channels) * n_channels 5285 + ie_len, GFP_KERNEL); 5286 if (!request) { 5287 err = -ENOMEM; 5288 goto unlock; 5289 } 5290 5291 if (n_ssids) 5292 request->ssids = (void *)&request->channels[n_channels]; 5293 request->n_ssids = n_ssids; 5294 if (ie_len) { 5295 if (request->ssids) 5296 request->ie = (void *)(request->ssids + n_ssids); 5297 else 5298 request->ie = (void *)(request->channels + n_channels); 5299 } 5300 5301 i = 0; 5302 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5303 /* user specified, bail out if channel not found */ 5304 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5305 struct ieee80211_channel *chan; 5306 5307 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5308 5309 if (!chan) { 5310 err = -EINVAL; 5311 goto out_free; 5312 } 5313 5314 /* ignore disabled channels */ 5315 if (chan->flags & IEEE80211_CHAN_DISABLED) 5316 continue; 5317 5318 request->channels[i] = chan; 5319 i++; 5320 } 5321 } else { 5322 enum ieee80211_band band; 5323 5324 /* all channels */ 5325 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5326 int j; 5327 if (!wiphy->bands[band]) 5328 continue; 5329 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5330 struct ieee80211_channel *chan; 5331 5332 chan = &wiphy->bands[band]->channels[j]; 5333 5334 if (chan->flags & IEEE80211_CHAN_DISABLED) 5335 continue; 5336 5337 request->channels[i] = chan; 5338 i++; 5339 } 5340 } 5341 } 5342 5343 if (!i) { 5344 err = -EINVAL; 5345 goto out_free; 5346 } 5347 5348 request->n_channels = i; 5349 5350 i = 0; 5351 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5352 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5353 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5354 err = -EINVAL; 5355 goto out_free; 5356 } 5357 request->ssids[i].ssid_len = nla_len(attr); 5358 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5359 i++; 5360 } 5361 } 5362 5363 if (info->attrs[NL80211_ATTR_IE]) { 5364 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5365 memcpy((void *)request->ie, 5366 nla_data(info->attrs[NL80211_ATTR_IE]), 5367 request->ie_len); 5368 } 5369 5370 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5371 if (wiphy->bands[i]) 5372 request->rates[i] = 5373 (1 << wiphy->bands[i]->n_bitrates) - 1; 5374 5375 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5376 nla_for_each_nested(attr, 5377 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5378 tmp) { 5379 enum ieee80211_band band = nla_type(attr); 5380 5381 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5382 err = -EINVAL; 5383 goto out_free; 5384 } 5385 5386 if (!wiphy->bands[band]) 5387 continue; 5388 5389 err = ieee80211_get_ratemask(wiphy->bands[band], 5390 nla_data(attr), 5391 nla_len(attr), 5392 &request->rates[band]); 5393 if (err) 5394 goto out_free; 5395 } 5396 } 5397 5398 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5399 request->flags = nla_get_u32( 5400 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5401 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5402 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5403 err = -EOPNOTSUPP; 5404 goto out_free; 5405 } 5406 } 5407 5408 request->no_cck = 5409 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5410 5411 request->wdev = wdev; 5412 request->wiphy = &rdev->wiphy; 5413 request->scan_start = jiffies; 5414 5415 rdev->scan_req = request; 5416 err = rdev_scan(rdev, request); 5417 5418 if (!err) { 5419 nl80211_send_scan_start(rdev, wdev); 5420 if (wdev->netdev) 5421 dev_hold(wdev->netdev); 5422 } else { 5423 out_free: 5424 rdev->scan_req = NULL; 5425 kfree(request); 5426 } 5427 5428 unlock: 5429 return err; 5430 } 5431 5432 static int nl80211_start_sched_scan(struct sk_buff *skb, 5433 struct genl_info *info) 5434 { 5435 struct cfg80211_sched_scan_request *request; 5436 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5437 struct net_device *dev = info->user_ptr[1]; 5438 struct nlattr *attr; 5439 struct wiphy *wiphy; 5440 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5441 u32 interval; 5442 enum ieee80211_band band; 5443 size_t ie_len; 5444 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5445 5446 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5447 !rdev->ops->sched_scan_start) 5448 return -EOPNOTSUPP; 5449 5450 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5451 return -EINVAL; 5452 5453 if (!info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5454 return -EINVAL; 5455 5456 interval = nla_get_u32(info->attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5457 if (interval == 0) 5458 return -EINVAL; 5459 5460 wiphy = &rdev->wiphy; 5461 5462 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5463 n_channels = validate_scan_freqs( 5464 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5465 if (!n_channels) 5466 return -EINVAL; 5467 } else { 5468 n_channels = ieee80211_get_num_supported_channels(wiphy); 5469 } 5470 5471 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5472 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5473 tmp) 5474 n_ssids++; 5475 5476 if (n_ssids > wiphy->max_sched_scan_ssids) 5477 return -EINVAL; 5478 5479 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) 5480 nla_for_each_nested(attr, 5481 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5482 tmp) 5483 n_match_sets++; 5484 5485 if (n_match_sets > wiphy->max_match_sets) 5486 return -EINVAL; 5487 5488 if (info->attrs[NL80211_ATTR_IE]) 5489 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5490 else 5491 ie_len = 0; 5492 5493 if (ie_len > wiphy->max_sched_scan_ie_len) 5494 return -EINVAL; 5495 5496 if (rdev->sched_scan_req) { 5497 err = -EINPROGRESS; 5498 goto out; 5499 } 5500 5501 request = kzalloc(sizeof(*request) 5502 + sizeof(*request->ssids) * n_ssids 5503 + sizeof(*request->match_sets) * n_match_sets 5504 + sizeof(*request->channels) * n_channels 5505 + ie_len, GFP_KERNEL); 5506 if (!request) { 5507 err = -ENOMEM; 5508 goto out; 5509 } 5510 5511 if (n_ssids) 5512 request->ssids = (void *)&request->channels[n_channels]; 5513 request->n_ssids = n_ssids; 5514 if (ie_len) { 5515 if (request->ssids) 5516 request->ie = (void *)(request->ssids + n_ssids); 5517 else 5518 request->ie = (void *)(request->channels + n_channels); 5519 } 5520 5521 if (n_match_sets) { 5522 if (request->ie) 5523 request->match_sets = (void *)(request->ie + ie_len); 5524 else if (request->ssids) 5525 request->match_sets = 5526 (void *)(request->ssids + n_ssids); 5527 else 5528 request->match_sets = 5529 (void *)(request->channels + n_channels); 5530 } 5531 request->n_match_sets = n_match_sets; 5532 5533 i = 0; 5534 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5535 /* user specified, bail out if channel not found */ 5536 nla_for_each_nested(attr, 5537 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], 5538 tmp) { 5539 struct ieee80211_channel *chan; 5540 5541 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5542 5543 if (!chan) { 5544 err = -EINVAL; 5545 goto out_free; 5546 } 5547 5548 /* ignore disabled channels */ 5549 if (chan->flags & IEEE80211_CHAN_DISABLED) 5550 continue; 5551 5552 request->channels[i] = chan; 5553 i++; 5554 } 5555 } else { 5556 /* all channels */ 5557 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5558 int j; 5559 if (!wiphy->bands[band]) 5560 continue; 5561 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5562 struct ieee80211_channel *chan; 5563 5564 chan = &wiphy->bands[band]->channels[j]; 5565 5566 if (chan->flags & IEEE80211_CHAN_DISABLED) 5567 continue; 5568 5569 request->channels[i] = chan; 5570 i++; 5571 } 5572 } 5573 } 5574 5575 if (!i) { 5576 err = -EINVAL; 5577 goto out_free; 5578 } 5579 5580 request->n_channels = i; 5581 5582 i = 0; 5583 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5584 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], 5585 tmp) { 5586 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5587 err = -EINVAL; 5588 goto out_free; 5589 } 5590 request->ssids[i].ssid_len = nla_len(attr); 5591 memcpy(request->ssids[i].ssid, nla_data(attr), 5592 nla_len(attr)); 5593 i++; 5594 } 5595 } 5596 5597 i = 0; 5598 if (info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5599 nla_for_each_nested(attr, 5600 info->attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5601 tmp) { 5602 struct nlattr *ssid, *rssi; 5603 5604 nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5605 nla_data(attr), nla_len(attr), 5606 nl80211_match_policy); 5607 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 5608 if (ssid) { 5609 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 5610 err = -EINVAL; 5611 goto out_free; 5612 } 5613 memcpy(request->match_sets[i].ssid.ssid, 5614 nla_data(ssid), nla_len(ssid)); 5615 request->match_sets[i].ssid.ssid_len = 5616 nla_len(ssid); 5617 } 5618 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 5619 if (rssi) 5620 request->rssi_thold = nla_get_u32(rssi); 5621 else 5622 request->rssi_thold = 5623 NL80211_SCAN_RSSI_THOLD_OFF; 5624 i++; 5625 } 5626 } 5627 5628 if (info->attrs[NL80211_ATTR_IE]) { 5629 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5630 memcpy((void *)request->ie, 5631 nla_data(info->attrs[NL80211_ATTR_IE]), 5632 request->ie_len); 5633 } 5634 5635 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5636 request->flags = nla_get_u32( 5637 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5638 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5639 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5640 err = -EOPNOTSUPP; 5641 goto out_free; 5642 } 5643 } 5644 5645 request->dev = dev; 5646 request->wiphy = &rdev->wiphy; 5647 request->interval = interval; 5648 request->scan_start = jiffies; 5649 5650 err = rdev_sched_scan_start(rdev, dev, request); 5651 if (!err) { 5652 rdev->sched_scan_req = request; 5653 nl80211_send_sched_scan(rdev, dev, 5654 NL80211_CMD_START_SCHED_SCAN); 5655 goto out; 5656 } 5657 5658 out_free: 5659 kfree(request); 5660 out: 5661 return err; 5662 } 5663 5664 static int nl80211_stop_sched_scan(struct sk_buff *skb, 5665 struct genl_info *info) 5666 { 5667 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5668 5669 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 5670 !rdev->ops->sched_scan_stop) 5671 return -EOPNOTSUPP; 5672 5673 return __cfg80211_stop_sched_scan(rdev, false); 5674 } 5675 5676 static int nl80211_start_radar_detection(struct sk_buff *skb, 5677 struct genl_info *info) 5678 { 5679 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5680 struct net_device *dev = info->user_ptr[1]; 5681 struct wireless_dev *wdev = dev->ieee80211_ptr; 5682 struct cfg80211_chan_def chandef; 5683 enum nl80211_dfs_regions dfs_region; 5684 int err; 5685 5686 dfs_region = reg_get_dfs_region(wdev->wiphy); 5687 if (dfs_region == NL80211_DFS_UNSET) 5688 return -EINVAL; 5689 5690 err = nl80211_parse_chandef(rdev, info, &chandef); 5691 if (err) 5692 return err; 5693 5694 if (netif_carrier_ok(dev)) 5695 return -EBUSY; 5696 5697 if (wdev->cac_started) 5698 return -EBUSY; 5699 5700 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef); 5701 if (err < 0) 5702 return err; 5703 5704 if (err == 0) 5705 return -EINVAL; 5706 5707 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 5708 return -EINVAL; 5709 5710 if (!rdev->ops->start_radar_detection) 5711 return -EOPNOTSUPP; 5712 5713 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5714 chandef.chan, CHAN_MODE_SHARED, 5715 BIT(chandef.width)); 5716 if (err) 5717 return err; 5718 5719 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef); 5720 if (!err) { 5721 wdev->channel = chandef.chan; 5722 wdev->cac_started = true; 5723 wdev->cac_start_time = jiffies; 5724 } 5725 return err; 5726 } 5727 5728 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 5729 { 5730 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5731 struct net_device *dev = info->user_ptr[1]; 5732 struct wireless_dev *wdev = dev->ieee80211_ptr; 5733 struct cfg80211_csa_settings params; 5734 /* csa_attrs is defined static to avoid waste of stack size - this 5735 * function is called under RTNL lock, so this should not be a problem. 5736 */ 5737 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 5738 u8 radar_detect_width = 0; 5739 int err; 5740 bool need_new_beacon = false; 5741 5742 if (!rdev->ops->channel_switch || 5743 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 5744 return -EOPNOTSUPP; 5745 5746 switch (dev->ieee80211_ptr->iftype) { 5747 case NL80211_IFTYPE_AP: 5748 case NL80211_IFTYPE_P2P_GO: 5749 need_new_beacon = true; 5750 5751 /* useless if AP is not running */ 5752 if (!wdev->beacon_interval) 5753 return -EINVAL; 5754 break; 5755 case NL80211_IFTYPE_ADHOC: 5756 case NL80211_IFTYPE_MESH_POINT: 5757 break; 5758 default: 5759 return -EOPNOTSUPP; 5760 } 5761 5762 memset(¶ms, 0, sizeof(params)); 5763 5764 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 5765 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 5766 return -EINVAL; 5767 5768 /* only important for AP, IBSS and mesh create IEs internally */ 5769 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 5770 return -EINVAL; 5771 5772 params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 5773 5774 if (!need_new_beacon) 5775 goto skip_beacons; 5776 5777 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 5778 if (err) 5779 return err; 5780 5781 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 5782 info->attrs[NL80211_ATTR_CSA_IES], 5783 nl80211_policy); 5784 if (err) 5785 return err; 5786 5787 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 5788 if (err) 5789 return err; 5790 5791 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 5792 return -EINVAL; 5793 5794 params.counter_offset_beacon = 5795 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 5796 if (params.counter_offset_beacon >= params.beacon_csa.tail_len) 5797 return -EINVAL; 5798 5799 /* sanity check - counters should be the same */ 5800 if (params.beacon_csa.tail[params.counter_offset_beacon] != 5801 params.count) 5802 return -EINVAL; 5803 5804 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 5805 params.counter_offset_presp = 5806 nla_get_u16(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 5807 if (params.counter_offset_presp >= 5808 params.beacon_csa.probe_resp_len) 5809 return -EINVAL; 5810 5811 if (params.beacon_csa.probe_resp[params.counter_offset_presp] != 5812 params.count) 5813 return -EINVAL; 5814 } 5815 5816 skip_beacons: 5817 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 5818 if (err) 5819 return err; 5820 5821 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef)) 5822 return -EINVAL; 5823 5824 if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP || 5825 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO || 5826 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) { 5827 err = cfg80211_chandef_dfs_required(wdev->wiphy, 5828 ¶ms.chandef); 5829 if (err < 0) { 5830 return err; 5831 } else if (err) { 5832 radar_detect_width = BIT(params.chandef.width); 5833 params.radar_required = true; 5834 } 5835 } 5836 5837 err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype, 5838 params.chandef.chan, 5839 CHAN_MODE_SHARED, 5840 radar_detect_width); 5841 if (err) 5842 return err; 5843 5844 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 5845 params.block_tx = true; 5846 5847 wdev_lock(wdev); 5848 err = rdev_channel_switch(rdev, dev, ¶ms); 5849 wdev_unlock(wdev); 5850 5851 return err; 5852 } 5853 5854 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 5855 u32 seq, int flags, 5856 struct cfg80211_registered_device *rdev, 5857 struct wireless_dev *wdev, 5858 struct cfg80211_internal_bss *intbss) 5859 { 5860 struct cfg80211_bss *res = &intbss->pub; 5861 const struct cfg80211_bss_ies *ies; 5862 void *hdr; 5863 struct nlattr *bss; 5864 bool tsf = false; 5865 5866 ASSERT_WDEV_LOCK(wdev); 5867 5868 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5869 NL80211_CMD_NEW_SCAN_RESULTS); 5870 if (!hdr) 5871 return -1; 5872 5873 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5874 5875 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 5876 goto nla_put_failure; 5877 if (wdev->netdev && 5878 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 5879 goto nla_put_failure; 5880 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 5881 goto nla_put_failure; 5882 5883 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 5884 if (!bss) 5885 goto nla_put_failure; 5886 if ((!is_zero_ether_addr(res->bssid) && 5887 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 5888 goto nla_put_failure; 5889 5890 rcu_read_lock(); 5891 ies = rcu_dereference(res->ies); 5892 if (ies) { 5893 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5894 goto fail_unlock_rcu; 5895 tsf = true; 5896 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 5897 ies->len, ies->data)) 5898 goto fail_unlock_rcu; 5899 } 5900 ies = rcu_dereference(res->beacon_ies); 5901 if (ies) { 5902 if (!tsf && nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 5903 goto fail_unlock_rcu; 5904 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 5905 ies->len, ies->data)) 5906 goto fail_unlock_rcu; 5907 } 5908 rcu_read_unlock(); 5909 5910 if (res->beacon_interval && 5911 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 5912 goto nla_put_failure; 5913 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 5914 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 5915 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 5916 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 5917 jiffies_to_msecs(jiffies - intbss->ts))) 5918 goto nla_put_failure; 5919 5920 switch (rdev->wiphy.signal_type) { 5921 case CFG80211_SIGNAL_TYPE_MBM: 5922 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 5923 goto nla_put_failure; 5924 break; 5925 case CFG80211_SIGNAL_TYPE_UNSPEC: 5926 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 5927 goto nla_put_failure; 5928 break; 5929 default: 5930 break; 5931 } 5932 5933 switch (wdev->iftype) { 5934 case NL80211_IFTYPE_P2P_CLIENT: 5935 case NL80211_IFTYPE_STATION: 5936 if (intbss == wdev->current_bss && 5937 nla_put_u32(msg, NL80211_BSS_STATUS, 5938 NL80211_BSS_STATUS_ASSOCIATED)) 5939 goto nla_put_failure; 5940 break; 5941 case NL80211_IFTYPE_ADHOC: 5942 if (intbss == wdev->current_bss && 5943 nla_put_u32(msg, NL80211_BSS_STATUS, 5944 NL80211_BSS_STATUS_IBSS_JOINED)) 5945 goto nla_put_failure; 5946 break; 5947 default: 5948 break; 5949 } 5950 5951 nla_nest_end(msg, bss); 5952 5953 return genlmsg_end(msg, hdr); 5954 5955 fail_unlock_rcu: 5956 rcu_read_unlock(); 5957 nla_put_failure: 5958 genlmsg_cancel(msg, hdr); 5959 return -EMSGSIZE; 5960 } 5961 5962 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 5963 { 5964 struct cfg80211_registered_device *rdev; 5965 struct cfg80211_internal_bss *scan; 5966 struct wireless_dev *wdev; 5967 int start = cb->args[2], idx = 0; 5968 int err; 5969 5970 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5971 if (err) 5972 return err; 5973 5974 wdev_lock(wdev); 5975 spin_lock_bh(&rdev->bss_lock); 5976 cfg80211_bss_expire(rdev); 5977 5978 cb->seq = rdev->bss_generation; 5979 5980 list_for_each_entry(scan, &rdev->bss_list, list) { 5981 if (++idx <= start) 5982 continue; 5983 if (nl80211_send_bss(skb, cb, 5984 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5985 rdev, wdev, scan) < 0) { 5986 idx--; 5987 break; 5988 } 5989 } 5990 5991 spin_unlock_bh(&rdev->bss_lock); 5992 wdev_unlock(wdev); 5993 5994 cb->args[2] = idx; 5995 nl80211_finish_wdev_dump(rdev); 5996 5997 return skb->len; 5998 } 5999 6000 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 6001 int flags, struct net_device *dev, 6002 struct survey_info *survey) 6003 { 6004 void *hdr; 6005 struct nlattr *infoattr; 6006 6007 hdr = nl80211hdr_put(msg, portid, seq, flags, 6008 NL80211_CMD_NEW_SURVEY_RESULTS); 6009 if (!hdr) 6010 return -ENOMEM; 6011 6012 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 6013 goto nla_put_failure; 6014 6015 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 6016 if (!infoattr) 6017 goto nla_put_failure; 6018 6019 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 6020 survey->channel->center_freq)) 6021 goto nla_put_failure; 6022 6023 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 6024 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 6025 goto nla_put_failure; 6026 if ((survey->filled & SURVEY_INFO_IN_USE) && 6027 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 6028 goto nla_put_failure; 6029 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) && 6030 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, 6031 survey->channel_time)) 6032 goto nla_put_failure; 6033 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) && 6034 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, 6035 survey->channel_time_busy)) 6036 goto nla_put_failure; 6037 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) && 6038 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, 6039 survey->channel_time_ext_busy)) 6040 goto nla_put_failure; 6041 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) && 6042 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, 6043 survey->channel_time_rx)) 6044 goto nla_put_failure; 6045 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) && 6046 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, 6047 survey->channel_time_tx)) 6048 goto nla_put_failure; 6049 6050 nla_nest_end(msg, infoattr); 6051 6052 return genlmsg_end(msg, hdr); 6053 6054 nla_put_failure: 6055 genlmsg_cancel(msg, hdr); 6056 return -EMSGSIZE; 6057 } 6058 6059 static int nl80211_dump_survey(struct sk_buff *skb, 6060 struct netlink_callback *cb) 6061 { 6062 struct survey_info survey; 6063 struct cfg80211_registered_device *dev; 6064 struct wireless_dev *wdev; 6065 int survey_idx = cb->args[2]; 6066 int res; 6067 6068 res = nl80211_prepare_wdev_dump(skb, cb, &dev, &wdev); 6069 if (res) 6070 return res; 6071 6072 if (!wdev->netdev) { 6073 res = -EINVAL; 6074 goto out_err; 6075 } 6076 6077 if (!dev->ops->dump_survey) { 6078 res = -EOPNOTSUPP; 6079 goto out_err; 6080 } 6081 6082 while (1) { 6083 struct ieee80211_channel *chan; 6084 6085 res = rdev_dump_survey(dev, wdev->netdev, survey_idx, &survey); 6086 if (res == -ENOENT) 6087 break; 6088 if (res) 6089 goto out_err; 6090 6091 /* Survey without a channel doesn't make sense */ 6092 if (!survey.channel) { 6093 res = -EINVAL; 6094 goto out; 6095 } 6096 6097 chan = ieee80211_get_channel(&dev->wiphy, 6098 survey.channel->center_freq); 6099 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) { 6100 survey_idx++; 6101 continue; 6102 } 6103 6104 if (nl80211_send_survey(skb, 6105 NETLINK_CB(cb->skb).portid, 6106 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6107 wdev->netdev, &survey) < 0) 6108 goto out; 6109 survey_idx++; 6110 } 6111 6112 out: 6113 cb->args[2] = survey_idx; 6114 res = skb->len; 6115 out_err: 6116 nl80211_finish_wdev_dump(dev); 6117 return res; 6118 } 6119 6120 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 6121 { 6122 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 6123 NL80211_WPA_VERSION_2)); 6124 } 6125 6126 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6127 { 6128 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6129 struct net_device *dev = info->user_ptr[1]; 6130 struct ieee80211_channel *chan; 6131 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6132 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6133 enum nl80211_auth_type auth_type; 6134 struct key_parse key; 6135 bool local_state_change; 6136 6137 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6138 return -EINVAL; 6139 6140 if (!info->attrs[NL80211_ATTR_MAC]) 6141 return -EINVAL; 6142 6143 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6144 return -EINVAL; 6145 6146 if (!info->attrs[NL80211_ATTR_SSID]) 6147 return -EINVAL; 6148 6149 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6150 return -EINVAL; 6151 6152 err = nl80211_parse_key(info, &key); 6153 if (err) 6154 return err; 6155 6156 if (key.idx >= 0) { 6157 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6158 return -EINVAL; 6159 if (!key.p.key || !key.p.key_len) 6160 return -EINVAL; 6161 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6162 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6163 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6164 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6165 return -EINVAL; 6166 if (key.idx > 4) 6167 return -EINVAL; 6168 } else { 6169 key.p.key_len = 0; 6170 key.p.key = NULL; 6171 } 6172 6173 if (key.idx >= 0) { 6174 int i; 6175 bool ok = false; 6176 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6177 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6178 ok = true; 6179 break; 6180 } 6181 } 6182 if (!ok) 6183 return -EINVAL; 6184 } 6185 6186 if (!rdev->ops->auth) 6187 return -EOPNOTSUPP; 6188 6189 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6190 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6191 return -EOPNOTSUPP; 6192 6193 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6194 chan = ieee80211_get_channel(&rdev->wiphy, 6195 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6196 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6197 return -EINVAL; 6198 6199 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6200 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6201 6202 if (info->attrs[NL80211_ATTR_IE]) { 6203 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6204 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6205 } 6206 6207 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6208 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6209 return -EINVAL; 6210 6211 if (auth_type == NL80211_AUTHTYPE_SAE && 6212 !info->attrs[NL80211_ATTR_SAE_DATA]) 6213 return -EINVAL; 6214 6215 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6216 if (auth_type != NL80211_AUTHTYPE_SAE) 6217 return -EINVAL; 6218 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6219 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6220 /* need to include at least Auth Transaction and Status Code */ 6221 if (sae_data_len < 4) 6222 return -EINVAL; 6223 } 6224 6225 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6226 6227 /* 6228 * Since we no longer track auth state, ignore 6229 * requests to only change local state. 6230 */ 6231 if (local_state_change) 6232 return 0; 6233 6234 wdev_lock(dev->ieee80211_ptr); 6235 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6236 ssid, ssid_len, ie, ie_len, 6237 key.p.key, key.p.key_len, key.idx, 6238 sae_data, sae_data_len); 6239 wdev_unlock(dev->ieee80211_ptr); 6240 return err; 6241 } 6242 6243 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6244 struct genl_info *info, 6245 struct cfg80211_crypto_settings *settings, 6246 int cipher_limit) 6247 { 6248 memset(settings, 0, sizeof(*settings)); 6249 6250 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6251 6252 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6253 u16 proto; 6254 proto = nla_get_u16( 6255 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6256 settings->control_port_ethertype = cpu_to_be16(proto); 6257 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6258 proto != ETH_P_PAE) 6259 return -EINVAL; 6260 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6261 settings->control_port_no_encrypt = true; 6262 } else 6263 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6264 6265 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6266 void *data; 6267 int len, i; 6268 6269 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6270 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6271 settings->n_ciphers_pairwise = len / sizeof(u32); 6272 6273 if (len % sizeof(u32)) 6274 return -EINVAL; 6275 6276 if (settings->n_ciphers_pairwise > cipher_limit) 6277 return -EINVAL; 6278 6279 memcpy(settings->ciphers_pairwise, data, len); 6280 6281 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6282 if (!cfg80211_supported_cipher_suite( 6283 &rdev->wiphy, 6284 settings->ciphers_pairwise[i])) 6285 return -EINVAL; 6286 } 6287 6288 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6289 settings->cipher_group = 6290 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6291 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6292 settings->cipher_group)) 6293 return -EINVAL; 6294 } 6295 6296 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6297 settings->wpa_versions = 6298 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6299 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6300 return -EINVAL; 6301 } 6302 6303 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6304 void *data; 6305 int len; 6306 6307 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6308 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6309 settings->n_akm_suites = len / sizeof(u32); 6310 6311 if (len % sizeof(u32)) 6312 return -EINVAL; 6313 6314 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6315 return -EINVAL; 6316 6317 memcpy(settings->akm_suites, data, len); 6318 } 6319 6320 return 0; 6321 } 6322 6323 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 6324 { 6325 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6326 struct net_device *dev = info->user_ptr[1]; 6327 struct ieee80211_channel *chan; 6328 struct cfg80211_assoc_request req = {}; 6329 const u8 *bssid, *ssid; 6330 int err, ssid_len = 0; 6331 6332 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6333 return -EINVAL; 6334 6335 if (!info->attrs[NL80211_ATTR_MAC] || 6336 !info->attrs[NL80211_ATTR_SSID] || 6337 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6338 return -EINVAL; 6339 6340 if (!rdev->ops->assoc) 6341 return -EOPNOTSUPP; 6342 6343 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6344 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6345 return -EOPNOTSUPP; 6346 6347 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6348 6349 chan = ieee80211_get_channel(&rdev->wiphy, 6350 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 6351 if (!chan || (chan->flags & IEEE80211_CHAN_DISABLED)) 6352 return -EINVAL; 6353 6354 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6355 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6356 6357 if (info->attrs[NL80211_ATTR_IE]) { 6358 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6359 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6360 } 6361 6362 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6363 enum nl80211_mfp mfp = 6364 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6365 if (mfp == NL80211_MFP_REQUIRED) 6366 req.use_mfp = true; 6367 else if (mfp != NL80211_MFP_NO) 6368 return -EINVAL; 6369 } 6370 6371 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 6372 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 6373 6374 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6375 req.flags |= ASSOC_REQ_DISABLE_HT; 6376 6377 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6378 memcpy(&req.ht_capa_mask, 6379 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6380 sizeof(req.ht_capa_mask)); 6381 6382 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6383 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6384 return -EINVAL; 6385 memcpy(&req.ht_capa, 6386 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6387 sizeof(req.ht_capa)); 6388 } 6389 6390 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6391 req.flags |= ASSOC_REQ_DISABLE_VHT; 6392 6393 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6394 memcpy(&req.vht_capa_mask, 6395 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6396 sizeof(req.vht_capa_mask)); 6397 6398 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6399 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6400 return -EINVAL; 6401 memcpy(&req.vht_capa, 6402 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6403 sizeof(req.vht_capa)); 6404 } 6405 6406 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 6407 if (!err) { 6408 wdev_lock(dev->ieee80211_ptr); 6409 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 6410 ssid, ssid_len, &req); 6411 wdev_unlock(dev->ieee80211_ptr); 6412 } 6413 6414 return err; 6415 } 6416 6417 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 6418 { 6419 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6420 struct net_device *dev = info->user_ptr[1]; 6421 const u8 *ie = NULL, *bssid; 6422 int ie_len = 0, err; 6423 u16 reason_code; 6424 bool local_state_change; 6425 6426 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6427 return -EINVAL; 6428 6429 if (!info->attrs[NL80211_ATTR_MAC]) 6430 return -EINVAL; 6431 6432 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6433 return -EINVAL; 6434 6435 if (!rdev->ops->deauth) 6436 return -EOPNOTSUPP; 6437 6438 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6439 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6440 return -EOPNOTSUPP; 6441 6442 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6443 6444 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6445 if (reason_code == 0) { 6446 /* Reason Code 0 is reserved */ 6447 return -EINVAL; 6448 } 6449 6450 if (info->attrs[NL80211_ATTR_IE]) { 6451 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6452 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6453 } 6454 6455 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6456 6457 wdev_lock(dev->ieee80211_ptr); 6458 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 6459 local_state_change); 6460 wdev_unlock(dev->ieee80211_ptr); 6461 return err; 6462 } 6463 6464 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 6465 { 6466 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6467 struct net_device *dev = info->user_ptr[1]; 6468 const u8 *ie = NULL, *bssid; 6469 int ie_len = 0, err; 6470 u16 reason_code; 6471 bool local_state_change; 6472 6473 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6474 return -EINVAL; 6475 6476 if (!info->attrs[NL80211_ATTR_MAC]) 6477 return -EINVAL; 6478 6479 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6480 return -EINVAL; 6481 6482 if (!rdev->ops->disassoc) 6483 return -EOPNOTSUPP; 6484 6485 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6486 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6487 return -EOPNOTSUPP; 6488 6489 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6490 6491 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6492 if (reason_code == 0) { 6493 /* Reason Code 0 is reserved */ 6494 return -EINVAL; 6495 } 6496 6497 if (info->attrs[NL80211_ATTR_IE]) { 6498 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6499 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6500 } 6501 6502 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6503 6504 wdev_lock(dev->ieee80211_ptr); 6505 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 6506 local_state_change); 6507 wdev_unlock(dev->ieee80211_ptr); 6508 return err; 6509 } 6510 6511 static bool 6512 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 6513 int mcast_rate[IEEE80211_NUM_BANDS], 6514 int rateval) 6515 { 6516 struct wiphy *wiphy = &rdev->wiphy; 6517 bool found = false; 6518 int band, i; 6519 6520 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6521 struct ieee80211_supported_band *sband; 6522 6523 sband = wiphy->bands[band]; 6524 if (!sband) 6525 continue; 6526 6527 for (i = 0; i < sband->n_bitrates; i++) { 6528 if (sband->bitrates[i].bitrate == rateval) { 6529 mcast_rate[band] = i + 1; 6530 found = true; 6531 break; 6532 } 6533 } 6534 } 6535 6536 return found; 6537 } 6538 6539 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 6540 { 6541 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6542 struct net_device *dev = info->user_ptr[1]; 6543 struct cfg80211_ibss_params ibss; 6544 struct wiphy *wiphy; 6545 struct cfg80211_cached_keys *connkeys = NULL; 6546 int err; 6547 6548 memset(&ibss, 0, sizeof(ibss)); 6549 6550 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6551 return -EINVAL; 6552 6553 if (!info->attrs[NL80211_ATTR_SSID] || 6554 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6555 return -EINVAL; 6556 6557 ibss.beacon_interval = 100; 6558 6559 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 6560 ibss.beacon_interval = 6561 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 6562 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 6563 return -EINVAL; 6564 } 6565 6566 if (!rdev->ops->join_ibss) 6567 return -EOPNOTSUPP; 6568 6569 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6570 return -EOPNOTSUPP; 6571 6572 wiphy = &rdev->wiphy; 6573 6574 if (info->attrs[NL80211_ATTR_MAC]) { 6575 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6576 6577 if (!is_valid_ether_addr(ibss.bssid)) 6578 return -EINVAL; 6579 } 6580 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6581 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6582 6583 if (info->attrs[NL80211_ATTR_IE]) { 6584 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6585 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6586 } 6587 6588 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 6589 if (err) 6590 return err; 6591 6592 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef)) 6593 return -EINVAL; 6594 6595 switch (ibss.chandef.width) { 6596 case NL80211_CHAN_WIDTH_5: 6597 case NL80211_CHAN_WIDTH_10: 6598 case NL80211_CHAN_WIDTH_20_NOHT: 6599 break; 6600 case NL80211_CHAN_WIDTH_20: 6601 case NL80211_CHAN_WIDTH_40: 6602 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS) 6603 break; 6604 default: 6605 return -EINVAL; 6606 } 6607 6608 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 6609 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 6610 6611 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 6612 u8 *rates = 6613 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6614 int n_rates = 6615 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6616 struct ieee80211_supported_band *sband = 6617 wiphy->bands[ibss.chandef.chan->band]; 6618 6619 err = ieee80211_get_ratemask(sband, rates, n_rates, 6620 &ibss.basic_rates); 6621 if (err) 6622 return err; 6623 } 6624 6625 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6626 memcpy(&ibss.ht_capa_mask, 6627 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6628 sizeof(ibss.ht_capa_mask)); 6629 6630 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6631 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6632 return -EINVAL; 6633 memcpy(&ibss.ht_capa, 6634 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6635 sizeof(ibss.ht_capa)); 6636 } 6637 6638 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 6639 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 6640 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 6641 return -EINVAL; 6642 6643 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 6644 bool no_ht = false; 6645 6646 connkeys = nl80211_parse_connkeys(rdev, 6647 info->attrs[NL80211_ATTR_KEYS], 6648 &no_ht); 6649 if (IS_ERR(connkeys)) 6650 return PTR_ERR(connkeys); 6651 6652 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 6653 no_ht) { 6654 kfree(connkeys); 6655 return -EINVAL; 6656 } 6657 } 6658 6659 ibss.control_port = 6660 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 6661 6662 ibss.userspace_handles_dfs = 6663 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 6664 6665 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 6666 if (err) 6667 kfree(connkeys); 6668 return err; 6669 } 6670 6671 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 6672 { 6673 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6674 struct net_device *dev = info->user_ptr[1]; 6675 6676 if (!rdev->ops->leave_ibss) 6677 return -EOPNOTSUPP; 6678 6679 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 6680 return -EOPNOTSUPP; 6681 6682 return cfg80211_leave_ibss(rdev, dev, false); 6683 } 6684 6685 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 6686 { 6687 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6688 struct net_device *dev = info->user_ptr[1]; 6689 int mcast_rate[IEEE80211_NUM_BANDS]; 6690 u32 nla_rate; 6691 int err; 6692 6693 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 6694 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6695 return -EOPNOTSUPP; 6696 6697 if (!rdev->ops->set_mcast_rate) 6698 return -EOPNOTSUPP; 6699 6700 memset(mcast_rate, 0, sizeof(mcast_rate)); 6701 6702 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 6703 return -EINVAL; 6704 6705 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 6706 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 6707 return -EINVAL; 6708 6709 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 6710 6711 return err; 6712 } 6713 6714 static struct sk_buff * 6715 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 6716 int approxlen, u32 portid, u32 seq, 6717 enum nl80211_commands cmd, 6718 enum nl80211_attrs attr, 6719 const struct nl80211_vendor_cmd_info *info, 6720 gfp_t gfp) 6721 { 6722 struct sk_buff *skb; 6723 void *hdr; 6724 struct nlattr *data; 6725 6726 skb = nlmsg_new(approxlen + 100, gfp); 6727 if (!skb) 6728 return NULL; 6729 6730 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 6731 if (!hdr) { 6732 kfree_skb(skb); 6733 return NULL; 6734 } 6735 6736 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 6737 goto nla_put_failure; 6738 6739 if (info) { 6740 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 6741 info->vendor_id)) 6742 goto nla_put_failure; 6743 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 6744 info->subcmd)) 6745 goto nla_put_failure; 6746 } 6747 6748 data = nla_nest_start(skb, attr); 6749 6750 ((void **)skb->cb)[0] = rdev; 6751 ((void **)skb->cb)[1] = hdr; 6752 ((void **)skb->cb)[2] = data; 6753 6754 return skb; 6755 6756 nla_put_failure: 6757 kfree_skb(skb); 6758 return NULL; 6759 } 6760 6761 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 6762 enum nl80211_commands cmd, 6763 enum nl80211_attrs attr, 6764 int vendor_event_idx, 6765 int approxlen, gfp_t gfp) 6766 { 6767 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 6768 const struct nl80211_vendor_cmd_info *info; 6769 6770 switch (cmd) { 6771 case NL80211_CMD_TESTMODE: 6772 if (WARN_ON(vendor_event_idx != -1)) 6773 return NULL; 6774 info = NULL; 6775 break; 6776 case NL80211_CMD_VENDOR: 6777 if (WARN_ON(vendor_event_idx < 0 || 6778 vendor_event_idx >= wiphy->n_vendor_events)) 6779 return NULL; 6780 info = &wiphy->vendor_events[vendor_event_idx]; 6781 break; 6782 default: 6783 WARN_ON(1); 6784 return NULL; 6785 } 6786 6787 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0, 6788 cmd, attr, info, gfp); 6789 } 6790 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 6791 6792 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 6793 { 6794 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 6795 void *hdr = ((void **)skb->cb)[1]; 6796 struct nlattr *data = ((void **)skb->cb)[2]; 6797 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 6798 6799 nla_nest_end(skb, data); 6800 genlmsg_end(skb, hdr); 6801 6802 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 6803 mcgrp = NL80211_MCGRP_VENDOR; 6804 6805 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 6806 mcgrp, gfp); 6807 } 6808 EXPORT_SYMBOL(__cfg80211_send_event_skb); 6809 6810 #ifdef CONFIG_NL80211_TESTMODE 6811 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 6812 { 6813 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6814 struct wireless_dev *wdev = 6815 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 6816 int err; 6817 6818 if (!rdev->ops->testmode_cmd) 6819 return -EOPNOTSUPP; 6820 6821 if (IS_ERR(wdev)) { 6822 err = PTR_ERR(wdev); 6823 if (err != -EINVAL) 6824 return err; 6825 wdev = NULL; 6826 } else if (wdev->wiphy != &rdev->wiphy) { 6827 return -EINVAL; 6828 } 6829 6830 if (!info->attrs[NL80211_ATTR_TESTDATA]) 6831 return -EINVAL; 6832 6833 rdev->cur_cmd_info = info; 6834 err = rdev_testmode_cmd(rdev, wdev, 6835 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 6836 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 6837 rdev->cur_cmd_info = NULL; 6838 6839 return err; 6840 } 6841 6842 static int nl80211_testmode_dump(struct sk_buff *skb, 6843 struct netlink_callback *cb) 6844 { 6845 struct cfg80211_registered_device *rdev; 6846 int err; 6847 long phy_idx; 6848 void *data = NULL; 6849 int data_len = 0; 6850 6851 rtnl_lock(); 6852 6853 if (cb->args[0]) { 6854 /* 6855 * 0 is a valid index, but not valid for args[0], 6856 * so we need to offset by 1. 6857 */ 6858 phy_idx = cb->args[0] - 1; 6859 } else { 6860 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 6861 nl80211_fam.attrbuf, nl80211_fam.maxattr, 6862 nl80211_policy); 6863 if (err) 6864 goto out_err; 6865 6866 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 6867 nl80211_fam.attrbuf); 6868 if (IS_ERR(rdev)) { 6869 err = PTR_ERR(rdev); 6870 goto out_err; 6871 } 6872 phy_idx = rdev->wiphy_idx; 6873 rdev = NULL; 6874 6875 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 6876 cb->args[1] = 6877 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 6878 } 6879 6880 if (cb->args[1]) { 6881 data = nla_data((void *)cb->args[1]); 6882 data_len = nla_len((void *)cb->args[1]); 6883 } 6884 6885 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 6886 if (!rdev) { 6887 err = -ENOENT; 6888 goto out_err; 6889 } 6890 6891 if (!rdev->ops->testmode_dump) { 6892 err = -EOPNOTSUPP; 6893 goto out_err; 6894 } 6895 6896 while (1) { 6897 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 6898 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6899 NL80211_CMD_TESTMODE); 6900 struct nlattr *tmdata; 6901 6902 if (!hdr) 6903 break; 6904 6905 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 6906 genlmsg_cancel(skb, hdr); 6907 break; 6908 } 6909 6910 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 6911 if (!tmdata) { 6912 genlmsg_cancel(skb, hdr); 6913 break; 6914 } 6915 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 6916 nla_nest_end(skb, tmdata); 6917 6918 if (err == -ENOBUFS || err == -ENOENT) { 6919 genlmsg_cancel(skb, hdr); 6920 break; 6921 } else if (err) { 6922 genlmsg_cancel(skb, hdr); 6923 goto out_err; 6924 } 6925 6926 genlmsg_end(skb, hdr); 6927 } 6928 6929 err = skb->len; 6930 /* see above */ 6931 cb->args[0] = phy_idx + 1; 6932 out_err: 6933 rtnl_unlock(); 6934 return err; 6935 } 6936 #endif 6937 6938 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 6939 { 6940 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6941 struct net_device *dev = info->user_ptr[1]; 6942 struct cfg80211_connect_params connect; 6943 struct wiphy *wiphy; 6944 struct cfg80211_cached_keys *connkeys = NULL; 6945 int err; 6946 6947 memset(&connect, 0, sizeof(connect)); 6948 6949 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6950 return -EINVAL; 6951 6952 if (!info->attrs[NL80211_ATTR_SSID] || 6953 !nla_len(info->attrs[NL80211_ATTR_SSID])) 6954 return -EINVAL; 6955 6956 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 6957 connect.auth_type = 6958 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6959 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 6960 NL80211_CMD_CONNECT)) 6961 return -EINVAL; 6962 } else 6963 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 6964 6965 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 6966 6967 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 6968 NL80211_MAX_NR_CIPHER_SUITES); 6969 if (err) 6970 return err; 6971 6972 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6973 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6974 return -EOPNOTSUPP; 6975 6976 wiphy = &rdev->wiphy; 6977 6978 connect.bg_scan_period = -1; 6979 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 6980 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 6981 connect.bg_scan_period = 6982 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 6983 } 6984 6985 if (info->attrs[NL80211_ATTR_MAC]) 6986 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6987 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6988 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6989 6990 if (info->attrs[NL80211_ATTR_IE]) { 6991 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6992 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6993 } 6994 6995 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6996 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6997 if (connect.mfp != NL80211_MFP_REQUIRED && 6998 connect.mfp != NL80211_MFP_NO) 6999 return -EINVAL; 7000 } else { 7001 connect.mfp = NL80211_MFP_NO; 7002 } 7003 7004 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7005 connect.channel = 7006 ieee80211_get_channel(wiphy, 7007 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 7008 if (!connect.channel || 7009 connect.channel->flags & IEEE80211_CHAN_DISABLED) 7010 return -EINVAL; 7011 } 7012 7013 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7014 connkeys = nl80211_parse_connkeys(rdev, 7015 info->attrs[NL80211_ATTR_KEYS], NULL); 7016 if (IS_ERR(connkeys)) 7017 return PTR_ERR(connkeys); 7018 } 7019 7020 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7021 connect.flags |= ASSOC_REQ_DISABLE_HT; 7022 7023 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7024 memcpy(&connect.ht_capa_mask, 7025 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7026 sizeof(connect.ht_capa_mask)); 7027 7028 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7029 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 7030 kfree(connkeys); 7031 return -EINVAL; 7032 } 7033 memcpy(&connect.ht_capa, 7034 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7035 sizeof(connect.ht_capa)); 7036 } 7037 7038 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7039 connect.flags |= ASSOC_REQ_DISABLE_VHT; 7040 7041 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7042 memcpy(&connect.vht_capa_mask, 7043 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7044 sizeof(connect.vht_capa_mask)); 7045 7046 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7047 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7048 kfree(connkeys); 7049 return -EINVAL; 7050 } 7051 memcpy(&connect.vht_capa, 7052 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7053 sizeof(connect.vht_capa)); 7054 } 7055 7056 wdev_lock(dev->ieee80211_ptr); 7057 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 7058 wdev_unlock(dev->ieee80211_ptr); 7059 if (err) 7060 kfree(connkeys); 7061 return err; 7062 } 7063 7064 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 7065 { 7066 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7067 struct net_device *dev = info->user_ptr[1]; 7068 u16 reason; 7069 int ret; 7070 7071 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7072 reason = WLAN_REASON_DEAUTH_LEAVING; 7073 else 7074 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7075 7076 if (reason == 0) 7077 return -EINVAL; 7078 7079 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7080 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7081 return -EOPNOTSUPP; 7082 7083 wdev_lock(dev->ieee80211_ptr); 7084 ret = cfg80211_disconnect(rdev, dev, reason, true); 7085 wdev_unlock(dev->ieee80211_ptr); 7086 return ret; 7087 } 7088 7089 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 7090 { 7091 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7092 struct net *net; 7093 int err; 7094 u32 pid; 7095 7096 if (!info->attrs[NL80211_ATTR_PID]) 7097 return -EINVAL; 7098 7099 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 7100 7101 net = get_net_ns_by_pid(pid); 7102 if (IS_ERR(net)) 7103 return PTR_ERR(net); 7104 7105 err = 0; 7106 7107 /* check if anything to do */ 7108 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 7109 err = cfg80211_switch_netns(rdev, net); 7110 7111 put_net(net); 7112 return err; 7113 } 7114 7115 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 7116 { 7117 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7118 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 7119 struct cfg80211_pmksa *pmksa) = NULL; 7120 struct net_device *dev = info->user_ptr[1]; 7121 struct cfg80211_pmksa pmksa; 7122 7123 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 7124 7125 if (!info->attrs[NL80211_ATTR_MAC]) 7126 return -EINVAL; 7127 7128 if (!info->attrs[NL80211_ATTR_PMKID]) 7129 return -EINVAL; 7130 7131 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7132 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7133 7134 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7135 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7136 return -EOPNOTSUPP; 7137 7138 switch (info->genlhdr->cmd) { 7139 case NL80211_CMD_SET_PMKSA: 7140 rdev_ops = rdev->ops->set_pmksa; 7141 break; 7142 case NL80211_CMD_DEL_PMKSA: 7143 rdev_ops = rdev->ops->del_pmksa; 7144 break; 7145 default: 7146 WARN_ON(1); 7147 break; 7148 } 7149 7150 if (!rdev_ops) 7151 return -EOPNOTSUPP; 7152 7153 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7154 } 7155 7156 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7157 { 7158 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7159 struct net_device *dev = info->user_ptr[1]; 7160 7161 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7162 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7163 return -EOPNOTSUPP; 7164 7165 if (!rdev->ops->flush_pmksa) 7166 return -EOPNOTSUPP; 7167 7168 return rdev_flush_pmksa(rdev, dev); 7169 } 7170 7171 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7172 { 7173 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7174 struct net_device *dev = info->user_ptr[1]; 7175 u8 action_code, dialog_token; 7176 u16 status_code; 7177 u8 *peer; 7178 7179 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7180 !rdev->ops->tdls_mgmt) 7181 return -EOPNOTSUPP; 7182 7183 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7184 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7185 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7186 !info->attrs[NL80211_ATTR_IE] || 7187 !info->attrs[NL80211_ATTR_MAC]) 7188 return -EINVAL; 7189 7190 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7191 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7192 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7193 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7194 7195 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7196 dialog_token, status_code, 7197 nla_data(info->attrs[NL80211_ATTR_IE]), 7198 nla_len(info->attrs[NL80211_ATTR_IE])); 7199 } 7200 7201 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7202 { 7203 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7204 struct net_device *dev = info->user_ptr[1]; 7205 enum nl80211_tdls_operation operation; 7206 u8 *peer; 7207 7208 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7209 !rdev->ops->tdls_oper) 7210 return -EOPNOTSUPP; 7211 7212 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7213 !info->attrs[NL80211_ATTR_MAC]) 7214 return -EINVAL; 7215 7216 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7217 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7218 7219 return rdev_tdls_oper(rdev, dev, peer, operation); 7220 } 7221 7222 static int nl80211_remain_on_channel(struct sk_buff *skb, 7223 struct genl_info *info) 7224 { 7225 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7226 struct wireless_dev *wdev = info->user_ptr[1]; 7227 struct cfg80211_chan_def chandef; 7228 struct sk_buff *msg; 7229 void *hdr; 7230 u64 cookie; 7231 u32 duration; 7232 int err; 7233 7234 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7235 !info->attrs[NL80211_ATTR_DURATION]) 7236 return -EINVAL; 7237 7238 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7239 7240 if (!rdev->ops->remain_on_channel || 7241 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7242 return -EOPNOTSUPP; 7243 7244 /* 7245 * We should be on that channel for at least a minimum amount of 7246 * time (10ms) but no longer than the driver supports. 7247 */ 7248 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7249 duration > rdev->wiphy.max_remain_on_channel_duration) 7250 return -EINVAL; 7251 7252 err = nl80211_parse_chandef(rdev, info, &chandef); 7253 if (err) 7254 return err; 7255 7256 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7257 if (!msg) 7258 return -ENOMEM; 7259 7260 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7261 NL80211_CMD_REMAIN_ON_CHANNEL); 7262 if (!hdr) { 7263 err = -ENOBUFS; 7264 goto free_msg; 7265 } 7266 7267 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 7268 duration, &cookie); 7269 7270 if (err) 7271 goto free_msg; 7272 7273 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7274 goto nla_put_failure; 7275 7276 genlmsg_end(msg, hdr); 7277 7278 return genlmsg_reply(msg, info); 7279 7280 nla_put_failure: 7281 err = -ENOBUFS; 7282 free_msg: 7283 nlmsg_free(msg); 7284 return err; 7285 } 7286 7287 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 7288 struct genl_info *info) 7289 { 7290 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7291 struct wireless_dev *wdev = info->user_ptr[1]; 7292 u64 cookie; 7293 7294 if (!info->attrs[NL80211_ATTR_COOKIE]) 7295 return -EINVAL; 7296 7297 if (!rdev->ops->cancel_remain_on_channel) 7298 return -EOPNOTSUPP; 7299 7300 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7301 7302 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 7303 } 7304 7305 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 7306 u8 *rates, u8 rates_len) 7307 { 7308 u8 i; 7309 u32 mask = 0; 7310 7311 for (i = 0; i < rates_len; i++) { 7312 int rate = (rates[i] & 0x7f) * 5; 7313 int ridx; 7314 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 7315 struct ieee80211_rate *srate = 7316 &sband->bitrates[ridx]; 7317 if (rate == srate->bitrate) { 7318 mask |= 1 << ridx; 7319 break; 7320 } 7321 } 7322 if (ridx == sband->n_bitrates) 7323 return 0; /* rate not found */ 7324 } 7325 7326 return mask; 7327 } 7328 7329 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 7330 u8 *rates, u8 rates_len, 7331 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 7332 { 7333 u8 i; 7334 7335 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 7336 7337 for (i = 0; i < rates_len; i++) { 7338 int ridx, rbit; 7339 7340 ridx = rates[i] / 8; 7341 rbit = BIT(rates[i] % 8); 7342 7343 /* check validity */ 7344 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 7345 return false; 7346 7347 /* check availability */ 7348 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 7349 mcs[ridx] |= rbit; 7350 else 7351 return false; 7352 } 7353 7354 return true; 7355 } 7356 7357 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 7358 { 7359 u16 mcs_mask = 0; 7360 7361 switch (vht_mcs_map) { 7362 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 7363 break; 7364 case IEEE80211_VHT_MCS_SUPPORT_0_7: 7365 mcs_mask = 0x00FF; 7366 break; 7367 case IEEE80211_VHT_MCS_SUPPORT_0_8: 7368 mcs_mask = 0x01FF; 7369 break; 7370 case IEEE80211_VHT_MCS_SUPPORT_0_9: 7371 mcs_mask = 0x03FF; 7372 break; 7373 default: 7374 break; 7375 } 7376 7377 return mcs_mask; 7378 } 7379 7380 static void vht_build_mcs_mask(u16 vht_mcs_map, 7381 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 7382 { 7383 u8 nss; 7384 7385 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 7386 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 7387 vht_mcs_map >>= 2; 7388 } 7389 } 7390 7391 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 7392 struct nl80211_txrate_vht *txrate, 7393 u16 mcs[NL80211_VHT_NSS_MAX]) 7394 { 7395 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 7396 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 7397 u8 i; 7398 7399 if (!sband->vht_cap.vht_supported) 7400 return false; 7401 7402 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 7403 7404 /* Build vht_mcs_mask from VHT capabilities */ 7405 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 7406 7407 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 7408 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 7409 mcs[i] = txrate->mcs[i]; 7410 else 7411 return false; 7412 } 7413 7414 return true; 7415 } 7416 7417 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 7418 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 7419 .len = NL80211_MAX_SUPP_RATES }, 7420 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 7421 .len = NL80211_MAX_SUPP_HT_RATES }, 7422 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 7423 }; 7424 7425 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 7426 struct genl_info *info) 7427 { 7428 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 7429 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7430 struct cfg80211_bitrate_mask mask; 7431 int rem, i; 7432 struct net_device *dev = info->user_ptr[1]; 7433 struct nlattr *tx_rates; 7434 struct ieee80211_supported_band *sband; 7435 u16 vht_tx_mcs_map; 7436 7437 if (!rdev->ops->set_bitrate_mask) 7438 return -EOPNOTSUPP; 7439 7440 memset(&mask, 0, sizeof(mask)); 7441 /* Default to all rates enabled */ 7442 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 7443 sband = rdev->wiphy.bands[i]; 7444 7445 if (!sband) 7446 continue; 7447 7448 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 7449 memcpy(mask.control[i].ht_mcs, 7450 sband->ht_cap.mcs.rx_mask, 7451 sizeof(mask.control[i].ht_mcs)); 7452 7453 if (!sband->vht_cap.vht_supported) 7454 continue; 7455 7456 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 7457 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 7458 } 7459 7460 /* if no rates are given set it back to the defaults */ 7461 if (!info->attrs[NL80211_ATTR_TX_RATES]) 7462 goto out; 7463 7464 /* 7465 * The nested attribute uses enum nl80211_band as the index. This maps 7466 * directly to the enum ieee80211_band values used in cfg80211. 7467 */ 7468 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 7469 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) 7470 { 7471 enum ieee80211_band band = nla_type(tx_rates); 7472 if (band < 0 || band >= IEEE80211_NUM_BANDS) 7473 return -EINVAL; 7474 sband = rdev->wiphy.bands[band]; 7475 if (sband == NULL) 7476 return -EINVAL; 7477 nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 7478 nla_len(tx_rates), nl80211_txattr_policy); 7479 if (tb[NL80211_TXRATE_LEGACY]) { 7480 mask.control[band].legacy = rateset_to_mask( 7481 sband, 7482 nla_data(tb[NL80211_TXRATE_LEGACY]), 7483 nla_len(tb[NL80211_TXRATE_LEGACY])); 7484 if ((mask.control[band].legacy == 0) && 7485 nla_len(tb[NL80211_TXRATE_LEGACY])) 7486 return -EINVAL; 7487 } 7488 if (tb[NL80211_TXRATE_HT]) { 7489 if (!ht_rateset_to_mask( 7490 sband, 7491 nla_data(tb[NL80211_TXRATE_HT]), 7492 nla_len(tb[NL80211_TXRATE_HT]), 7493 mask.control[band].ht_mcs)) 7494 return -EINVAL; 7495 } 7496 if (tb[NL80211_TXRATE_VHT]) { 7497 if (!vht_set_mcs_mask( 7498 sband, 7499 nla_data(tb[NL80211_TXRATE_VHT]), 7500 mask.control[band].vht_mcs)) 7501 return -EINVAL; 7502 } 7503 7504 if (mask.control[band].legacy == 0) { 7505 /* don't allow empty legacy rates if HT or VHT 7506 * are not even supported. 7507 */ 7508 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 7509 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 7510 return -EINVAL; 7511 7512 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 7513 if (mask.control[band].ht_mcs[i]) 7514 goto out; 7515 7516 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 7517 if (mask.control[band].vht_mcs[i]) 7518 goto out; 7519 7520 /* legacy and mcs rates may not be both empty */ 7521 return -EINVAL; 7522 } 7523 } 7524 7525 out: 7526 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 7527 } 7528 7529 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 7530 { 7531 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7532 struct wireless_dev *wdev = info->user_ptr[1]; 7533 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 7534 7535 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 7536 return -EINVAL; 7537 7538 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 7539 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 7540 7541 switch (wdev->iftype) { 7542 case NL80211_IFTYPE_STATION: 7543 case NL80211_IFTYPE_ADHOC: 7544 case NL80211_IFTYPE_P2P_CLIENT: 7545 case NL80211_IFTYPE_AP: 7546 case NL80211_IFTYPE_AP_VLAN: 7547 case NL80211_IFTYPE_MESH_POINT: 7548 case NL80211_IFTYPE_P2P_GO: 7549 case NL80211_IFTYPE_P2P_DEVICE: 7550 break; 7551 default: 7552 return -EOPNOTSUPP; 7553 } 7554 7555 /* not much point in registering if we can't reply */ 7556 if (!rdev->ops->mgmt_tx) 7557 return -EOPNOTSUPP; 7558 7559 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 7560 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 7561 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 7562 } 7563 7564 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 7565 { 7566 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7567 struct wireless_dev *wdev = info->user_ptr[1]; 7568 struct cfg80211_chan_def chandef; 7569 int err; 7570 void *hdr = NULL; 7571 u64 cookie; 7572 struct sk_buff *msg = NULL; 7573 struct cfg80211_mgmt_tx_params params = { 7574 .dont_wait_for_ack = 7575 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 7576 }; 7577 7578 if (!info->attrs[NL80211_ATTR_FRAME]) 7579 return -EINVAL; 7580 7581 if (!rdev->ops->mgmt_tx) 7582 return -EOPNOTSUPP; 7583 7584 switch (wdev->iftype) { 7585 case NL80211_IFTYPE_P2P_DEVICE: 7586 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7587 return -EINVAL; 7588 case NL80211_IFTYPE_STATION: 7589 case NL80211_IFTYPE_ADHOC: 7590 case NL80211_IFTYPE_P2P_CLIENT: 7591 case NL80211_IFTYPE_AP: 7592 case NL80211_IFTYPE_AP_VLAN: 7593 case NL80211_IFTYPE_MESH_POINT: 7594 case NL80211_IFTYPE_P2P_GO: 7595 break; 7596 default: 7597 return -EOPNOTSUPP; 7598 } 7599 7600 if (info->attrs[NL80211_ATTR_DURATION]) { 7601 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7602 return -EINVAL; 7603 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7604 7605 /* 7606 * We should wait on the channel for at least a minimum amount 7607 * of time (10ms) but no longer than the driver supports. 7608 */ 7609 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7610 params.wait > rdev->wiphy.max_remain_on_channel_duration) 7611 return -EINVAL; 7612 7613 } 7614 7615 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 7616 7617 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 7618 return -EINVAL; 7619 7620 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 7621 7622 /* get the channel if any has been specified, otherwise pass NULL to 7623 * the driver. The latter will use the current one 7624 */ 7625 chandef.chan = NULL; 7626 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7627 err = nl80211_parse_chandef(rdev, info, &chandef); 7628 if (err) 7629 return err; 7630 } 7631 7632 if (!chandef.chan && params.offchan) 7633 return -EINVAL; 7634 7635 if (!params.dont_wait_for_ack) { 7636 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7637 if (!msg) 7638 return -ENOMEM; 7639 7640 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7641 NL80211_CMD_FRAME); 7642 if (!hdr) { 7643 err = -ENOBUFS; 7644 goto free_msg; 7645 } 7646 } 7647 7648 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 7649 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 7650 params.chan = chandef.chan; 7651 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 7652 if (err) 7653 goto free_msg; 7654 7655 if (msg) { 7656 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7657 goto nla_put_failure; 7658 7659 genlmsg_end(msg, hdr); 7660 return genlmsg_reply(msg, info); 7661 } 7662 7663 return 0; 7664 7665 nla_put_failure: 7666 err = -ENOBUFS; 7667 free_msg: 7668 nlmsg_free(msg); 7669 return err; 7670 } 7671 7672 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 7673 { 7674 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7675 struct wireless_dev *wdev = info->user_ptr[1]; 7676 u64 cookie; 7677 7678 if (!info->attrs[NL80211_ATTR_COOKIE]) 7679 return -EINVAL; 7680 7681 if (!rdev->ops->mgmt_tx_cancel_wait) 7682 return -EOPNOTSUPP; 7683 7684 switch (wdev->iftype) { 7685 case NL80211_IFTYPE_STATION: 7686 case NL80211_IFTYPE_ADHOC: 7687 case NL80211_IFTYPE_P2P_CLIENT: 7688 case NL80211_IFTYPE_AP: 7689 case NL80211_IFTYPE_AP_VLAN: 7690 case NL80211_IFTYPE_P2P_GO: 7691 case NL80211_IFTYPE_P2P_DEVICE: 7692 break; 7693 default: 7694 return -EOPNOTSUPP; 7695 } 7696 7697 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7698 7699 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 7700 } 7701 7702 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 7703 { 7704 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7705 struct wireless_dev *wdev; 7706 struct net_device *dev = info->user_ptr[1]; 7707 u8 ps_state; 7708 bool state; 7709 int err; 7710 7711 if (!info->attrs[NL80211_ATTR_PS_STATE]) 7712 return -EINVAL; 7713 7714 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 7715 7716 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 7717 return -EINVAL; 7718 7719 wdev = dev->ieee80211_ptr; 7720 7721 if (!rdev->ops->set_power_mgmt) 7722 return -EOPNOTSUPP; 7723 7724 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 7725 7726 if (state == wdev->ps) 7727 return 0; 7728 7729 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 7730 if (!err) 7731 wdev->ps = state; 7732 return err; 7733 } 7734 7735 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 7736 { 7737 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7738 enum nl80211_ps_state ps_state; 7739 struct wireless_dev *wdev; 7740 struct net_device *dev = info->user_ptr[1]; 7741 struct sk_buff *msg; 7742 void *hdr; 7743 int err; 7744 7745 wdev = dev->ieee80211_ptr; 7746 7747 if (!rdev->ops->set_power_mgmt) 7748 return -EOPNOTSUPP; 7749 7750 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7751 if (!msg) 7752 return -ENOMEM; 7753 7754 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7755 NL80211_CMD_GET_POWER_SAVE); 7756 if (!hdr) { 7757 err = -ENOBUFS; 7758 goto free_msg; 7759 } 7760 7761 if (wdev->ps) 7762 ps_state = NL80211_PS_ENABLED; 7763 else 7764 ps_state = NL80211_PS_DISABLED; 7765 7766 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 7767 goto nla_put_failure; 7768 7769 genlmsg_end(msg, hdr); 7770 return genlmsg_reply(msg, info); 7771 7772 nla_put_failure: 7773 err = -ENOBUFS; 7774 free_msg: 7775 nlmsg_free(msg); 7776 return err; 7777 } 7778 7779 static struct nla_policy 7780 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] __read_mostly = { 7781 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 7782 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 7783 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 7784 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 7785 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 7786 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 7787 }; 7788 7789 static int nl80211_set_cqm_txe(struct genl_info *info, 7790 u32 rate, u32 pkts, u32 intvl) 7791 { 7792 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7793 struct net_device *dev = info->user_ptr[1]; 7794 struct wireless_dev *wdev = dev->ieee80211_ptr; 7795 7796 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 7797 return -EINVAL; 7798 7799 if (!rdev->ops->set_cqm_txe_config) 7800 return -EOPNOTSUPP; 7801 7802 if (wdev->iftype != NL80211_IFTYPE_STATION && 7803 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7804 return -EOPNOTSUPP; 7805 7806 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 7807 } 7808 7809 static int nl80211_set_cqm_rssi(struct genl_info *info, 7810 s32 threshold, u32 hysteresis) 7811 { 7812 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7813 struct net_device *dev = info->user_ptr[1]; 7814 struct wireless_dev *wdev = dev->ieee80211_ptr; 7815 7816 if (threshold > 0) 7817 return -EINVAL; 7818 7819 /* disabling - hysteresis should also be zero then */ 7820 if (threshold == 0) 7821 hysteresis = 0; 7822 7823 if (!rdev->ops->set_cqm_rssi_config) 7824 return -EOPNOTSUPP; 7825 7826 if (wdev->iftype != NL80211_IFTYPE_STATION && 7827 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 7828 return -EOPNOTSUPP; 7829 7830 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 7831 } 7832 7833 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 7834 { 7835 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 7836 struct nlattr *cqm; 7837 int err; 7838 7839 cqm = info->attrs[NL80211_ATTR_CQM]; 7840 if (!cqm) 7841 return -EINVAL; 7842 7843 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 7844 nl80211_attr_cqm_policy); 7845 if (err) 7846 return err; 7847 7848 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 7849 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 7850 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 7851 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 7852 7853 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 7854 } 7855 7856 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 7857 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 7858 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 7859 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 7860 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 7861 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 7862 7863 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 7864 } 7865 7866 return -EINVAL; 7867 } 7868 7869 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 7870 { 7871 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7872 struct net_device *dev = info->user_ptr[1]; 7873 struct mesh_config cfg; 7874 struct mesh_setup setup; 7875 int err; 7876 7877 /* start with default */ 7878 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 7879 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 7880 7881 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 7882 /* and parse parameters if given */ 7883 err = nl80211_parse_mesh_config(info, &cfg, NULL); 7884 if (err) 7885 return err; 7886 } 7887 7888 if (!info->attrs[NL80211_ATTR_MESH_ID] || 7889 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 7890 return -EINVAL; 7891 7892 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 7893 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 7894 7895 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7896 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 7897 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7898 return -EINVAL; 7899 7900 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7901 setup.beacon_interval = 7902 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7903 if (setup.beacon_interval < 10 || 7904 setup.beacon_interval > 10000) 7905 return -EINVAL; 7906 } 7907 7908 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 7909 setup.dtim_period = 7910 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 7911 if (setup.dtim_period < 1 || setup.dtim_period > 100) 7912 return -EINVAL; 7913 } 7914 7915 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 7916 /* parse additional setup parameters if given */ 7917 err = nl80211_parse_mesh_setup(info, &setup); 7918 if (err) 7919 return err; 7920 } 7921 7922 if (setup.user_mpm) 7923 cfg.auto_open_plinks = false; 7924 7925 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7926 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 7927 if (err) 7928 return err; 7929 } else { 7930 /* cfg80211_join_mesh() will sort it out */ 7931 setup.chandef.chan = NULL; 7932 } 7933 7934 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7935 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7936 int n_rates = 7937 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7938 struct ieee80211_supported_band *sband; 7939 7940 if (!setup.chandef.chan) 7941 return -EINVAL; 7942 7943 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 7944 7945 err = ieee80211_get_ratemask(sband, rates, n_rates, 7946 &setup.basic_rates); 7947 if (err) 7948 return err; 7949 } 7950 7951 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 7952 } 7953 7954 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 7955 { 7956 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7957 struct net_device *dev = info->user_ptr[1]; 7958 7959 return cfg80211_leave_mesh(rdev, dev); 7960 } 7961 7962 #ifdef CONFIG_PM 7963 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 7964 struct cfg80211_registered_device *rdev) 7965 { 7966 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 7967 struct nlattr *nl_pats, *nl_pat; 7968 int i, pat_len; 7969 7970 if (!wowlan->n_patterns) 7971 return 0; 7972 7973 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 7974 if (!nl_pats) 7975 return -ENOBUFS; 7976 7977 for (i = 0; i < wowlan->n_patterns; i++) { 7978 nl_pat = nla_nest_start(msg, i + 1); 7979 if (!nl_pat) 7980 return -ENOBUFS; 7981 pat_len = wowlan->patterns[i].pattern_len; 7982 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 7983 wowlan->patterns[i].mask) || 7984 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 7985 wowlan->patterns[i].pattern) || 7986 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 7987 wowlan->patterns[i].pkt_offset)) 7988 return -ENOBUFS; 7989 nla_nest_end(msg, nl_pat); 7990 } 7991 nla_nest_end(msg, nl_pats); 7992 7993 return 0; 7994 } 7995 7996 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 7997 struct cfg80211_wowlan_tcp *tcp) 7998 { 7999 struct nlattr *nl_tcp; 8000 8001 if (!tcp) 8002 return 0; 8003 8004 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 8005 if (!nl_tcp) 8006 return -ENOBUFS; 8007 8008 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 8009 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 8010 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 8011 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 8012 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 8013 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 8014 tcp->payload_len, tcp->payload) || 8015 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 8016 tcp->data_interval) || 8017 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 8018 tcp->wake_len, tcp->wake_data) || 8019 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 8020 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 8021 return -ENOBUFS; 8022 8023 if (tcp->payload_seq.len && 8024 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 8025 sizeof(tcp->payload_seq), &tcp->payload_seq)) 8026 return -ENOBUFS; 8027 8028 if (tcp->payload_tok.len && 8029 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 8030 sizeof(tcp->payload_tok) + tcp->tokens_size, 8031 &tcp->payload_tok)) 8032 return -ENOBUFS; 8033 8034 nla_nest_end(msg, nl_tcp); 8035 8036 return 0; 8037 } 8038 8039 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 8040 { 8041 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8042 struct sk_buff *msg; 8043 void *hdr; 8044 u32 size = NLMSG_DEFAULT_SIZE; 8045 8046 if (!rdev->wiphy.wowlan) 8047 return -EOPNOTSUPP; 8048 8049 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 8050 /* adjust size to have room for all the data */ 8051 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 8052 rdev->wiphy.wowlan_config->tcp->payload_len + 8053 rdev->wiphy.wowlan_config->tcp->wake_len + 8054 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 8055 } 8056 8057 msg = nlmsg_new(size, GFP_KERNEL); 8058 if (!msg) 8059 return -ENOMEM; 8060 8061 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8062 NL80211_CMD_GET_WOWLAN); 8063 if (!hdr) 8064 goto nla_put_failure; 8065 8066 if (rdev->wiphy.wowlan_config) { 8067 struct nlattr *nl_wowlan; 8068 8069 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 8070 if (!nl_wowlan) 8071 goto nla_put_failure; 8072 8073 if ((rdev->wiphy.wowlan_config->any && 8074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 8075 (rdev->wiphy.wowlan_config->disconnect && 8076 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 8077 (rdev->wiphy.wowlan_config->magic_pkt && 8078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 8079 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 8080 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 8081 (rdev->wiphy.wowlan_config->eap_identity_req && 8082 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 8083 (rdev->wiphy.wowlan_config->four_way_handshake && 8084 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 8085 (rdev->wiphy.wowlan_config->rfkill_release && 8086 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 8087 goto nla_put_failure; 8088 8089 if (nl80211_send_wowlan_patterns(msg, rdev)) 8090 goto nla_put_failure; 8091 8092 if (nl80211_send_wowlan_tcp(msg, 8093 rdev->wiphy.wowlan_config->tcp)) 8094 goto nla_put_failure; 8095 8096 nla_nest_end(msg, nl_wowlan); 8097 } 8098 8099 genlmsg_end(msg, hdr); 8100 return genlmsg_reply(msg, info); 8101 8102 nla_put_failure: 8103 nlmsg_free(msg); 8104 return -ENOBUFS; 8105 } 8106 8107 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 8108 struct nlattr *attr, 8109 struct cfg80211_wowlan *trig) 8110 { 8111 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 8112 struct cfg80211_wowlan_tcp *cfg; 8113 struct nl80211_wowlan_tcp_data_token *tok = NULL; 8114 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 8115 u32 size; 8116 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 8117 int err, port; 8118 8119 if (!rdev->wiphy.wowlan->tcp) 8120 return -EINVAL; 8121 8122 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 8123 nla_data(attr), nla_len(attr), 8124 nl80211_wowlan_tcp_policy); 8125 if (err) 8126 return err; 8127 8128 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 8129 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 8130 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 8131 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 8132 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 8133 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 8134 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 8135 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 8136 return -EINVAL; 8137 8138 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 8139 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 8140 return -EINVAL; 8141 8142 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 8143 rdev->wiphy.wowlan->tcp->data_interval_max || 8144 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 8145 return -EINVAL; 8146 8147 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 8148 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 8149 return -EINVAL; 8150 8151 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 8152 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 8153 return -EINVAL; 8154 8155 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 8156 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8157 8158 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8159 tokens_size = tokln - sizeof(*tok); 8160 8161 if (!tok->len || tokens_size % tok->len) 8162 return -EINVAL; 8163 if (!rdev->wiphy.wowlan->tcp->tok) 8164 return -EINVAL; 8165 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 8166 return -EINVAL; 8167 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 8168 return -EINVAL; 8169 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 8170 return -EINVAL; 8171 if (tok->offset + tok->len > data_size) 8172 return -EINVAL; 8173 } 8174 8175 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 8176 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 8177 if (!rdev->wiphy.wowlan->tcp->seq) 8178 return -EINVAL; 8179 if (seq->len == 0 || seq->len > 4) 8180 return -EINVAL; 8181 if (seq->len + seq->offset > data_size) 8182 return -EINVAL; 8183 } 8184 8185 size = sizeof(*cfg); 8186 size += data_size; 8187 size += wake_size + wake_mask_size; 8188 size += tokens_size; 8189 8190 cfg = kzalloc(size, GFP_KERNEL); 8191 if (!cfg) 8192 return -ENOMEM; 8193 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 8194 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 8195 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 8196 ETH_ALEN); 8197 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 8198 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 8199 else 8200 port = 0; 8201 #ifdef CONFIG_INET 8202 /* allocate a socket and port for it and use it */ 8203 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 8204 IPPROTO_TCP, &cfg->sock, 1); 8205 if (err) { 8206 kfree(cfg); 8207 return err; 8208 } 8209 if (inet_csk_get_port(cfg->sock->sk, port)) { 8210 sock_release(cfg->sock); 8211 kfree(cfg); 8212 return -EADDRINUSE; 8213 } 8214 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 8215 #else 8216 if (!port) { 8217 kfree(cfg); 8218 return -EINVAL; 8219 } 8220 cfg->src_port = port; 8221 #endif 8222 8223 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 8224 cfg->payload_len = data_size; 8225 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 8226 memcpy((void *)cfg->payload, 8227 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 8228 data_size); 8229 if (seq) 8230 cfg->payload_seq = *seq; 8231 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 8232 cfg->wake_len = wake_size; 8233 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 8234 memcpy((void *)cfg->wake_data, 8235 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 8236 wake_size); 8237 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 8238 data_size + wake_size; 8239 memcpy((void *)cfg->wake_mask, 8240 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 8241 wake_mask_size); 8242 if (tok) { 8243 cfg->tokens_size = tokens_size; 8244 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 8245 } 8246 8247 trig->tcp = cfg; 8248 8249 return 0; 8250 } 8251 8252 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 8253 { 8254 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8255 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 8256 struct cfg80211_wowlan new_triggers = {}; 8257 struct cfg80211_wowlan *ntrig; 8258 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 8259 int err, i; 8260 bool prev_enabled = rdev->wiphy.wowlan_config; 8261 8262 if (!wowlan) 8263 return -EOPNOTSUPP; 8264 8265 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 8266 cfg80211_rdev_free_wowlan(rdev); 8267 rdev->wiphy.wowlan_config = NULL; 8268 goto set_wakeup; 8269 } 8270 8271 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 8272 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8273 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8274 nl80211_wowlan_policy); 8275 if (err) 8276 return err; 8277 8278 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 8279 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 8280 return -EINVAL; 8281 new_triggers.any = true; 8282 } 8283 8284 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 8285 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 8286 return -EINVAL; 8287 new_triggers.disconnect = true; 8288 } 8289 8290 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 8291 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 8292 return -EINVAL; 8293 new_triggers.magic_pkt = true; 8294 } 8295 8296 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 8297 return -EINVAL; 8298 8299 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 8300 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 8301 return -EINVAL; 8302 new_triggers.gtk_rekey_failure = true; 8303 } 8304 8305 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 8306 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 8307 return -EINVAL; 8308 new_triggers.eap_identity_req = true; 8309 } 8310 8311 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 8312 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 8313 return -EINVAL; 8314 new_triggers.four_way_handshake = true; 8315 } 8316 8317 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 8318 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 8319 return -EINVAL; 8320 new_triggers.rfkill_release = true; 8321 } 8322 8323 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 8324 struct nlattr *pat; 8325 int n_patterns = 0; 8326 int rem, pat_len, mask_len, pkt_offset; 8327 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 8328 8329 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8330 rem) 8331 n_patterns++; 8332 if (n_patterns > wowlan->n_patterns) 8333 return -EINVAL; 8334 8335 new_triggers.patterns = kcalloc(n_patterns, 8336 sizeof(new_triggers.patterns[0]), 8337 GFP_KERNEL); 8338 if (!new_triggers.patterns) 8339 return -ENOMEM; 8340 8341 new_triggers.n_patterns = n_patterns; 8342 i = 0; 8343 8344 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8345 rem) { 8346 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 8347 nla_len(pat), NULL); 8348 err = -EINVAL; 8349 if (!pat_tb[NL80211_PKTPAT_MASK] || 8350 !pat_tb[NL80211_PKTPAT_PATTERN]) 8351 goto error; 8352 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 8353 mask_len = DIV_ROUND_UP(pat_len, 8); 8354 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 8355 goto error; 8356 if (pat_len > wowlan->pattern_max_len || 8357 pat_len < wowlan->pattern_min_len) 8358 goto error; 8359 8360 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 8361 pkt_offset = 0; 8362 else 8363 pkt_offset = nla_get_u32( 8364 pat_tb[NL80211_PKTPAT_OFFSET]); 8365 if (pkt_offset > wowlan->max_pkt_offset) 8366 goto error; 8367 new_triggers.patterns[i].pkt_offset = pkt_offset; 8368 8369 new_triggers.patterns[i].mask = 8370 kmalloc(mask_len + pat_len, GFP_KERNEL); 8371 if (!new_triggers.patterns[i].mask) { 8372 err = -ENOMEM; 8373 goto error; 8374 } 8375 new_triggers.patterns[i].pattern = 8376 new_triggers.patterns[i].mask + mask_len; 8377 memcpy(new_triggers.patterns[i].mask, 8378 nla_data(pat_tb[NL80211_PKTPAT_MASK]), 8379 mask_len); 8380 new_triggers.patterns[i].pattern_len = pat_len; 8381 memcpy(new_triggers.patterns[i].pattern, 8382 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 8383 pat_len); 8384 i++; 8385 } 8386 } 8387 8388 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 8389 err = nl80211_parse_wowlan_tcp( 8390 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 8391 &new_triggers); 8392 if (err) 8393 goto error; 8394 } 8395 8396 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 8397 if (!ntrig) { 8398 err = -ENOMEM; 8399 goto error; 8400 } 8401 cfg80211_rdev_free_wowlan(rdev); 8402 rdev->wiphy.wowlan_config = ntrig; 8403 8404 set_wakeup: 8405 if (rdev->ops->set_wakeup && 8406 prev_enabled != !!rdev->wiphy.wowlan_config) 8407 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 8408 8409 return 0; 8410 error: 8411 for (i = 0; i < new_triggers.n_patterns; i++) 8412 kfree(new_triggers.patterns[i].mask); 8413 kfree(new_triggers.patterns); 8414 if (new_triggers.tcp && new_triggers.tcp->sock) 8415 sock_release(new_triggers.tcp->sock); 8416 kfree(new_triggers.tcp); 8417 return err; 8418 } 8419 #endif 8420 8421 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 8422 struct cfg80211_registered_device *rdev) 8423 { 8424 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 8425 int i, j, pat_len; 8426 struct cfg80211_coalesce_rules *rule; 8427 8428 if (!rdev->coalesce->n_rules) 8429 return 0; 8430 8431 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 8432 if (!nl_rules) 8433 return -ENOBUFS; 8434 8435 for (i = 0; i < rdev->coalesce->n_rules; i++) { 8436 nl_rule = nla_nest_start(msg, i + 1); 8437 if (!nl_rule) 8438 return -ENOBUFS; 8439 8440 rule = &rdev->coalesce->rules[i]; 8441 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 8442 rule->delay)) 8443 return -ENOBUFS; 8444 8445 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 8446 rule->condition)) 8447 return -ENOBUFS; 8448 8449 nl_pats = nla_nest_start(msg, 8450 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 8451 if (!nl_pats) 8452 return -ENOBUFS; 8453 8454 for (j = 0; j < rule->n_patterns; j++) { 8455 nl_pat = nla_nest_start(msg, j + 1); 8456 if (!nl_pat) 8457 return -ENOBUFS; 8458 pat_len = rule->patterns[j].pattern_len; 8459 if (nla_put(msg, NL80211_PKTPAT_MASK, 8460 DIV_ROUND_UP(pat_len, 8), 8461 rule->patterns[j].mask) || 8462 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8463 rule->patterns[j].pattern) || 8464 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8465 rule->patterns[j].pkt_offset)) 8466 return -ENOBUFS; 8467 nla_nest_end(msg, nl_pat); 8468 } 8469 nla_nest_end(msg, nl_pats); 8470 nla_nest_end(msg, nl_rule); 8471 } 8472 nla_nest_end(msg, nl_rules); 8473 8474 return 0; 8475 } 8476 8477 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 8478 { 8479 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8480 struct sk_buff *msg; 8481 void *hdr; 8482 8483 if (!rdev->wiphy.coalesce) 8484 return -EOPNOTSUPP; 8485 8486 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8487 if (!msg) 8488 return -ENOMEM; 8489 8490 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8491 NL80211_CMD_GET_COALESCE); 8492 if (!hdr) 8493 goto nla_put_failure; 8494 8495 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 8496 goto nla_put_failure; 8497 8498 genlmsg_end(msg, hdr); 8499 return genlmsg_reply(msg, info); 8500 8501 nla_put_failure: 8502 nlmsg_free(msg); 8503 return -ENOBUFS; 8504 } 8505 8506 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 8507 { 8508 struct cfg80211_coalesce *coalesce = rdev->coalesce; 8509 int i, j; 8510 struct cfg80211_coalesce_rules *rule; 8511 8512 if (!coalesce) 8513 return; 8514 8515 for (i = 0; i < coalesce->n_rules; i++) { 8516 rule = &coalesce->rules[i]; 8517 for (j = 0; j < rule->n_patterns; j++) 8518 kfree(rule->patterns[j].mask); 8519 kfree(rule->patterns); 8520 } 8521 kfree(coalesce->rules); 8522 kfree(coalesce); 8523 rdev->coalesce = NULL; 8524 } 8525 8526 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 8527 struct nlattr *rule, 8528 struct cfg80211_coalesce_rules *new_rule) 8529 { 8530 int err, i; 8531 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 8532 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 8533 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 8534 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 8535 8536 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 8537 nla_len(rule), nl80211_coalesce_policy); 8538 if (err) 8539 return err; 8540 8541 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 8542 new_rule->delay = 8543 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 8544 if (new_rule->delay > coalesce->max_delay) 8545 return -EINVAL; 8546 8547 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 8548 new_rule->condition = 8549 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 8550 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 8551 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 8552 return -EINVAL; 8553 8554 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 8555 return -EINVAL; 8556 8557 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 8558 rem) 8559 n_patterns++; 8560 if (n_patterns > coalesce->n_patterns) 8561 return -EINVAL; 8562 8563 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 8564 GFP_KERNEL); 8565 if (!new_rule->patterns) 8566 return -ENOMEM; 8567 8568 new_rule->n_patterns = n_patterns; 8569 i = 0; 8570 8571 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 8572 rem) { 8573 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 8574 nla_len(pat), NULL); 8575 if (!pat_tb[NL80211_PKTPAT_MASK] || 8576 !pat_tb[NL80211_PKTPAT_PATTERN]) 8577 return -EINVAL; 8578 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 8579 mask_len = DIV_ROUND_UP(pat_len, 8); 8580 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 8581 return -EINVAL; 8582 if (pat_len > coalesce->pattern_max_len || 8583 pat_len < coalesce->pattern_min_len) 8584 return -EINVAL; 8585 8586 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 8587 pkt_offset = 0; 8588 else 8589 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 8590 if (pkt_offset > coalesce->max_pkt_offset) 8591 return -EINVAL; 8592 new_rule->patterns[i].pkt_offset = pkt_offset; 8593 8594 new_rule->patterns[i].mask = 8595 kmalloc(mask_len + pat_len, GFP_KERNEL); 8596 if (!new_rule->patterns[i].mask) 8597 return -ENOMEM; 8598 new_rule->patterns[i].pattern = 8599 new_rule->patterns[i].mask + mask_len; 8600 memcpy(new_rule->patterns[i].mask, 8601 nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len); 8602 new_rule->patterns[i].pattern_len = pat_len; 8603 memcpy(new_rule->patterns[i].pattern, 8604 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len); 8605 i++; 8606 } 8607 8608 return 0; 8609 } 8610 8611 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 8612 { 8613 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8614 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 8615 struct cfg80211_coalesce new_coalesce = {}; 8616 struct cfg80211_coalesce *n_coalesce; 8617 int err, rem_rule, n_rules = 0, i, j; 8618 struct nlattr *rule; 8619 struct cfg80211_coalesce_rules *tmp_rule; 8620 8621 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 8622 return -EOPNOTSUPP; 8623 8624 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 8625 cfg80211_rdev_free_coalesce(rdev); 8626 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 8627 return 0; 8628 } 8629 8630 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 8631 rem_rule) 8632 n_rules++; 8633 if (n_rules > coalesce->n_rules) 8634 return -EINVAL; 8635 8636 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 8637 GFP_KERNEL); 8638 if (!new_coalesce.rules) 8639 return -ENOMEM; 8640 8641 new_coalesce.n_rules = n_rules; 8642 i = 0; 8643 8644 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 8645 rem_rule) { 8646 err = nl80211_parse_coalesce_rule(rdev, rule, 8647 &new_coalesce.rules[i]); 8648 if (err) 8649 goto error; 8650 8651 i++; 8652 } 8653 8654 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 8655 if (err) 8656 goto error; 8657 8658 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 8659 if (!n_coalesce) { 8660 err = -ENOMEM; 8661 goto error; 8662 } 8663 cfg80211_rdev_free_coalesce(rdev); 8664 rdev->coalesce = n_coalesce; 8665 8666 return 0; 8667 error: 8668 for (i = 0; i < new_coalesce.n_rules; i++) { 8669 tmp_rule = &new_coalesce.rules[i]; 8670 for (j = 0; j < tmp_rule->n_patterns; j++) 8671 kfree(tmp_rule->patterns[j].mask); 8672 kfree(tmp_rule->patterns); 8673 } 8674 kfree(new_coalesce.rules); 8675 8676 return err; 8677 } 8678 8679 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 8680 { 8681 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8682 struct net_device *dev = info->user_ptr[1]; 8683 struct wireless_dev *wdev = dev->ieee80211_ptr; 8684 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 8685 struct cfg80211_gtk_rekey_data rekey_data; 8686 int err; 8687 8688 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 8689 return -EINVAL; 8690 8691 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 8692 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 8693 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 8694 nl80211_rekey_policy); 8695 if (err) 8696 return err; 8697 8698 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 8699 return -ERANGE; 8700 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 8701 return -ERANGE; 8702 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 8703 return -ERANGE; 8704 8705 memcpy(rekey_data.kek, nla_data(tb[NL80211_REKEY_DATA_KEK]), 8706 NL80211_KEK_LEN); 8707 memcpy(rekey_data.kck, nla_data(tb[NL80211_REKEY_DATA_KCK]), 8708 NL80211_KCK_LEN); 8709 memcpy(rekey_data.replay_ctr, 8710 nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]), 8711 NL80211_REPLAY_CTR_LEN); 8712 8713 wdev_lock(wdev); 8714 if (!wdev->current_bss) { 8715 err = -ENOTCONN; 8716 goto out; 8717 } 8718 8719 if (!rdev->ops->set_rekey_data) { 8720 err = -EOPNOTSUPP; 8721 goto out; 8722 } 8723 8724 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 8725 out: 8726 wdev_unlock(wdev); 8727 return err; 8728 } 8729 8730 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 8731 struct genl_info *info) 8732 { 8733 struct net_device *dev = info->user_ptr[1]; 8734 struct wireless_dev *wdev = dev->ieee80211_ptr; 8735 8736 if (wdev->iftype != NL80211_IFTYPE_AP && 8737 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8738 return -EINVAL; 8739 8740 if (wdev->ap_unexpected_nlportid) 8741 return -EBUSY; 8742 8743 wdev->ap_unexpected_nlportid = info->snd_portid; 8744 return 0; 8745 } 8746 8747 static int nl80211_probe_client(struct sk_buff *skb, 8748 struct genl_info *info) 8749 { 8750 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8751 struct net_device *dev = info->user_ptr[1]; 8752 struct wireless_dev *wdev = dev->ieee80211_ptr; 8753 struct sk_buff *msg; 8754 void *hdr; 8755 const u8 *addr; 8756 u64 cookie; 8757 int err; 8758 8759 if (wdev->iftype != NL80211_IFTYPE_AP && 8760 wdev->iftype != NL80211_IFTYPE_P2P_GO) 8761 return -EOPNOTSUPP; 8762 8763 if (!info->attrs[NL80211_ATTR_MAC]) 8764 return -EINVAL; 8765 8766 if (!rdev->ops->probe_client) 8767 return -EOPNOTSUPP; 8768 8769 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8770 if (!msg) 8771 return -ENOMEM; 8772 8773 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8774 NL80211_CMD_PROBE_CLIENT); 8775 if (!hdr) { 8776 err = -ENOBUFS; 8777 goto free_msg; 8778 } 8779 8780 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 8781 8782 err = rdev_probe_client(rdev, dev, addr, &cookie); 8783 if (err) 8784 goto free_msg; 8785 8786 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8787 goto nla_put_failure; 8788 8789 genlmsg_end(msg, hdr); 8790 8791 return genlmsg_reply(msg, info); 8792 8793 nla_put_failure: 8794 err = -ENOBUFS; 8795 free_msg: 8796 nlmsg_free(msg); 8797 return err; 8798 } 8799 8800 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 8801 { 8802 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8803 struct cfg80211_beacon_registration *reg, *nreg; 8804 int rv; 8805 8806 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 8807 return -EOPNOTSUPP; 8808 8809 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 8810 if (!nreg) 8811 return -ENOMEM; 8812 8813 /* First, check if already registered. */ 8814 spin_lock_bh(&rdev->beacon_registrations_lock); 8815 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 8816 if (reg->nlportid == info->snd_portid) { 8817 rv = -EALREADY; 8818 goto out_err; 8819 } 8820 } 8821 /* Add it to the list */ 8822 nreg->nlportid = info->snd_portid; 8823 list_add(&nreg->list, &rdev->beacon_registrations); 8824 8825 spin_unlock_bh(&rdev->beacon_registrations_lock); 8826 8827 return 0; 8828 out_err: 8829 spin_unlock_bh(&rdev->beacon_registrations_lock); 8830 kfree(nreg); 8831 return rv; 8832 } 8833 8834 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 8835 { 8836 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8837 struct wireless_dev *wdev = info->user_ptr[1]; 8838 int err; 8839 8840 if (!rdev->ops->start_p2p_device) 8841 return -EOPNOTSUPP; 8842 8843 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8844 return -EOPNOTSUPP; 8845 8846 if (wdev->p2p_started) 8847 return 0; 8848 8849 err = cfg80211_can_add_interface(rdev, wdev->iftype); 8850 if (err) 8851 return err; 8852 8853 err = rdev_start_p2p_device(rdev, wdev); 8854 if (err) 8855 return err; 8856 8857 wdev->p2p_started = true; 8858 rdev->opencount++; 8859 8860 return 0; 8861 } 8862 8863 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 8864 { 8865 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8866 struct wireless_dev *wdev = info->user_ptr[1]; 8867 8868 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 8869 return -EOPNOTSUPP; 8870 8871 if (!rdev->ops->stop_p2p_device) 8872 return -EOPNOTSUPP; 8873 8874 cfg80211_stop_p2p_device(rdev, wdev); 8875 8876 return 0; 8877 } 8878 8879 static int nl80211_get_protocol_features(struct sk_buff *skb, 8880 struct genl_info *info) 8881 { 8882 void *hdr; 8883 struct sk_buff *msg; 8884 8885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8886 if (!msg) 8887 return -ENOMEM; 8888 8889 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8890 NL80211_CMD_GET_PROTOCOL_FEATURES); 8891 if (!hdr) 8892 goto nla_put_failure; 8893 8894 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 8895 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 8896 goto nla_put_failure; 8897 8898 genlmsg_end(msg, hdr); 8899 return genlmsg_reply(msg, info); 8900 8901 nla_put_failure: 8902 kfree_skb(msg); 8903 return -ENOBUFS; 8904 } 8905 8906 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 8907 { 8908 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8909 struct cfg80211_update_ft_ies_params ft_params; 8910 struct net_device *dev = info->user_ptr[1]; 8911 8912 if (!rdev->ops->update_ft_ies) 8913 return -EOPNOTSUPP; 8914 8915 if (!info->attrs[NL80211_ATTR_MDID] || 8916 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8917 return -EINVAL; 8918 8919 memset(&ft_params, 0, sizeof(ft_params)); 8920 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 8921 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8922 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8923 8924 return rdev_update_ft_ies(rdev, dev, &ft_params); 8925 } 8926 8927 static int nl80211_crit_protocol_start(struct sk_buff *skb, 8928 struct genl_info *info) 8929 { 8930 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8931 struct wireless_dev *wdev = info->user_ptr[1]; 8932 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 8933 u16 duration; 8934 int ret; 8935 8936 if (!rdev->ops->crit_proto_start) 8937 return -EOPNOTSUPP; 8938 8939 if (WARN_ON(!rdev->ops->crit_proto_stop)) 8940 return -EINVAL; 8941 8942 if (rdev->crit_proto_nlportid) 8943 return -EBUSY; 8944 8945 /* determine protocol if provided */ 8946 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 8947 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 8948 8949 if (proto >= NUM_NL80211_CRIT_PROTO) 8950 return -EINVAL; 8951 8952 /* timeout must be provided */ 8953 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 8954 return -EINVAL; 8955 8956 duration = 8957 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 8958 8959 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 8960 return -ERANGE; 8961 8962 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 8963 if (!ret) 8964 rdev->crit_proto_nlportid = info->snd_portid; 8965 8966 return ret; 8967 } 8968 8969 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 8970 struct genl_info *info) 8971 { 8972 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8973 struct wireless_dev *wdev = info->user_ptr[1]; 8974 8975 if (!rdev->ops->crit_proto_stop) 8976 return -EOPNOTSUPP; 8977 8978 if (rdev->crit_proto_nlportid) { 8979 rdev->crit_proto_nlportid = 0; 8980 rdev_crit_proto_stop(rdev, wdev); 8981 } 8982 return 0; 8983 } 8984 8985 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 8986 { 8987 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8988 struct wireless_dev *wdev = 8989 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 8990 int i, err; 8991 u32 vid, subcmd; 8992 8993 if (!rdev->wiphy.vendor_commands) 8994 return -EOPNOTSUPP; 8995 8996 if (IS_ERR(wdev)) { 8997 err = PTR_ERR(wdev); 8998 if (err != -EINVAL) 8999 return err; 9000 wdev = NULL; 9001 } else if (wdev->wiphy != &rdev->wiphy) { 9002 return -EINVAL; 9003 } 9004 9005 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 9006 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 9007 return -EINVAL; 9008 9009 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 9010 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 9011 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 9012 const struct wiphy_vendor_command *vcmd; 9013 void *data = NULL; 9014 int len = 0; 9015 9016 vcmd = &rdev->wiphy.vendor_commands[i]; 9017 9018 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 9019 continue; 9020 9021 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 9022 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 9023 if (!wdev) 9024 return -EINVAL; 9025 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 9026 !wdev->netdev) 9027 return -EINVAL; 9028 9029 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 9030 if (wdev->netdev && 9031 !netif_running(wdev->netdev)) 9032 return -ENETDOWN; 9033 if (!wdev->netdev && !wdev->p2p_started) 9034 return -ENETDOWN; 9035 } 9036 } else { 9037 wdev = NULL; 9038 } 9039 9040 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 9041 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9042 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9043 } 9044 9045 rdev->cur_cmd_info = info; 9046 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 9047 data, len); 9048 rdev->cur_cmd_info = NULL; 9049 return err; 9050 } 9051 9052 return -EOPNOTSUPP; 9053 } 9054 9055 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 9056 enum nl80211_commands cmd, 9057 enum nl80211_attrs attr, 9058 int approxlen) 9059 { 9060 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 9061 9062 if (WARN_ON(!rdev->cur_cmd_info)) 9063 return NULL; 9064 9065 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 9066 rdev->cur_cmd_info->snd_portid, 9067 rdev->cur_cmd_info->snd_seq, 9068 cmd, attr, NULL, GFP_KERNEL); 9069 } 9070 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 9071 9072 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 9073 { 9074 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9075 void *hdr = ((void **)skb->cb)[1]; 9076 struct nlattr *data = ((void **)skb->cb)[2]; 9077 9078 if (WARN_ON(!rdev->cur_cmd_info)) { 9079 kfree_skb(skb); 9080 return -EINVAL; 9081 } 9082 9083 nla_nest_end(skb, data); 9084 genlmsg_end(skb, hdr); 9085 return genlmsg_reply(skb, rdev->cur_cmd_info); 9086 } 9087 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 9088 9089 9090 static int nl80211_set_qos_map(struct sk_buff *skb, 9091 struct genl_info *info) 9092 { 9093 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9094 struct cfg80211_qos_map *qos_map = NULL; 9095 struct net_device *dev = info->user_ptr[1]; 9096 u8 *pos, len, num_des, des_len, des; 9097 int ret; 9098 9099 if (!rdev->ops->set_qos_map) 9100 return -EOPNOTSUPP; 9101 9102 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 9103 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 9104 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 9105 9106 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 9107 len > IEEE80211_QOS_MAP_LEN_MAX) 9108 return -EINVAL; 9109 9110 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 9111 if (!qos_map) 9112 return -ENOMEM; 9113 9114 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 9115 if (num_des) { 9116 des_len = num_des * 9117 sizeof(struct cfg80211_dscp_exception); 9118 memcpy(qos_map->dscp_exception, pos, des_len); 9119 qos_map->num_des = num_des; 9120 for (des = 0; des < num_des; des++) { 9121 if (qos_map->dscp_exception[des].up > 7) { 9122 kfree(qos_map); 9123 return -EINVAL; 9124 } 9125 } 9126 pos += des_len; 9127 } 9128 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 9129 } 9130 9131 wdev_lock(dev->ieee80211_ptr); 9132 ret = nl80211_key_allowed(dev->ieee80211_ptr); 9133 if (!ret) 9134 ret = rdev_set_qos_map(rdev, dev, qos_map); 9135 wdev_unlock(dev->ieee80211_ptr); 9136 9137 kfree(qos_map); 9138 return ret; 9139 } 9140 9141 #define NL80211_FLAG_NEED_WIPHY 0x01 9142 #define NL80211_FLAG_NEED_NETDEV 0x02 9143 #define NL80211_FLAG_NEED_RTNL 0x04 9144 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 9145 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 9146 NL80211_FLAG_CHECK_NETDEV_UP) 9147 #define NL80211_FLAG_NEED_WDEV 0x10 9148 /* If a netdev is associated, it must be UP, P2P must be started */ 9149 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 9150 NL80211_FLAG_CHECK_NETDEV_UP) 9151 9152 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 9153 struct genl_info *info) 9154 { 9155 struct cfg80211_registered_device *rdev; 9156 struct wireless_dev *wdev; 9157 struct net_device *dev; 9158 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 9159 9160 if (rtnl) 9161 rtnl_lock(); 9162 9163 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 9164 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 9165 if (IS_ERR(rdev)) { 9166 if (rtnl) 9167 rtnl_unlock(); 9168 return PTR_ERR(rdev); 9169 } 9170 info->user_ptr[0] = rdev; 9171 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 9172 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 9173 ASSERT_RTNL(); 9174 9175 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 9176 info->attrs); 9177 if (IS_ERR(wdev)) { 9178 if (rtnl) 9179 rtnl_unlock(); 9180 return PTR_ERR(wdev); 9181 } 9182 9183 dev = wdev->netdev; 9184 rdev = wiphy_to_dev(wdev->wiphy); 9185 9186 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 9187 if (!dev) { 9188 if (rtnl) 9189 rtnl_unlock(); 9190 return -EINVAL; 9191 } 9192 9193 info->user_ptr[1] = dev; 9194 } else { 9195 info->user_ptr[1] = wdev; 9196 } 9197 9198 if (dev) { 9199 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 9200 !netif_running(dev)) { 9201 if (rtnl) 9202 rtnl_unlock(); 9203 return -ENETDOWN; 9204 } 9205 9206 dev_hold(dev); 9207 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 9208 if (!wdev->p2p_started) { 9209 if (rtnl) 9210 rtnl_unlock(); 9211 return -ENETDOWN; 9212 } 9213 } 9214 9215 info->user_ptr[0] = rdev; 9216 } 9217 9218 return 0; 9219 } 9220 9221 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 9222 struct genl_info *info) 9223 { 9224 if (info->user_ptr[1]) { 9225 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 9226 struct wireless_dev *wdev = info->user_ptr[1]; 9227 9228 if (wdev->netdev) 9229 dev_put(wdev->netdev); 9230 } else { 9231 dev_put(info->user_ptr[1]); 9232 } 9233 } 9234 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 9235 rtnl_unlock(); 9236 } 9237 9238 static const struct genl_ops nl80211_ops[] = { 9239 { 9240 .cmd = NL80211_CMD_GET_WIPHY, 9241 .doit = nl80211_get_wiphy, 9242 .dumpit = nl80211_dump_wiphy, 9243 .done = nl80211_dump_wiphy_done, 9244 .policy = nl80211_policy, 9245 /* can be retrieved by unprivileged users */ 9246 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9247 NL80211_FLAG_NEED_RTNL, 9248 }, 9249 { 9250 .cmd = NL80211_CMD_SET_WIPHY, 9251 .doit = nl80211_set_wiphy, 9252 .policy = nl80211_policy, 9253 .flags = GENL_ADMIN_PERM, 9254 .internal_flags = NL80211_FLAG_NEED_RTNL, 9255 }, 9256 { 9257 .cmd = NL80211_CMD_GET_INTERFACE, 9258 .doit = nl80211_get_interface, 9259 .dumpit = nl80211_dump_interface, 9260 .policy = nl80211_policy, 9261 /* can be retrieved by unprivileged users */ 9262 .internal_flags = NL80211_FLAG_NEED_WDEV | 9263 NL80211_FLAG_NEED_RTNL, 9264 }, 9265 { 9266 .cmd = NL80211_CMD_SET_INTERFACE, 9267 .doit = nl80211_set_interface, 9268 .policy = nl80211_policy, 9269 .flags = GENL_ADMIN_PERM, 9270 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9271 NL80211_FLAG_NEED_RTNL, 9272 }, 9273 { 9274 .cmd = NL80211_CMD_NEW_INTERFACE, 9275 .doit = nl80211_new_interface, 9276 .policy = nl80211_policy, 9277 .flags = GENL_ADMIN_PERM, 9278 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9279 NL80211_FLAG_NEED_RTNL, 9280 }, 9281 { 9282 .cmd = NL80211_CMD_DEL_INTERFACE, 9283 .doit = nl80211_del_interface, 9284 .policy = nl80211_policy, 9285 .flags = GENL_ADMIN_PERM, 9286 .internal_flags = NL80211_FLAG_NEED_WDEV | 9287 NL80211_FLAG_NEED_RTNL, 9288 }, 9289 { 9290 .cmd = NL80211_CMD_GET_KEY, 9291 .doit = nl80211_get_key, 9292 .policy = nl80211_policy, 9293 .flags = GENL_ADMIN_PERM, 9294 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9295 NL80211_FLAG_NEED_RTNL, 9296 }, 9297 { 9298 .cmd = NL80211_CMD_SET_KEY, 9299 .doit = nl80211_set_key, 9300 .policy = nl80211_policy, 9301 .flags = GENL_ADMIN_PERM, 9302 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9303 NL80211_FLAG_NEED_RTNL, 9304 }, 9305 { 9306 .cmd = NL80211_CMD_NEW_KEY, 9307 .doit = nl80211_new_key, 9308 .policy = nl80211_policy, 9309 .flags = GENL_ADMIN_PERM, 9310 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9311 NL80211_FLAG_NEED_RTNL, 9312 }, 9313 { 9314 .cmd = NL80211_CMD_DEL_KEY, 9315 .doit = nl80211_del_key, 9316 .policy = nl80211_policy, 9317 .flags = GENL_ADMIN_PERM, 9318 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9319 NL80211_FLAG_NEED_RTNL, 9320 }, 9321 { 9322 .cmd = NL80211_CMD_SET_BEACON, 9323 .policy = nl80211_policy, 9324 .flags = GENL_ADMIN_PERM, 9325 .doit = nl80211_set_beacon, 9326 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9327 NL80211_FLAG_NEED_RTNL, 9328 }, 9329 { 9330 .cmd = NL80211_CMD_START_AP, 9331 .policy = nl80211_policy, 9332 .flags = GENL_ADMIN_PERM, 9333 .doit = nl80211_start_ap, 9334 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9335 NL80211_FLAG_NEED_RTNL, 9336 }, 9337 { 9338 .cmd = NL80211_CMD_STOP_AP, 9339 .policy = nl80211_policy, 9340 .flags = GENL_ADMIN_PERM, 9341 .doit = nl80211_stop_ap, 9342 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9343 NL80211_FLAG_NEED_RTNL, 9344 }, 9345 { 9346 .cmd = NL80211_CMD_GET_STATION, 9347 .doit = nl80211_get_station, 9348 .dumpit = nl80211_dump_station, 9349 .policy = nl80211_policy, 9350 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9351 NL80211_FLAG_NEED_RTNL, 9352 }, 9353 { 9354 .cmd = NL80211_CMD_SET_STATION, 9355 .doit = nl80211_set_station, 9356 .policy = nl80211_policy, 9357 .flags = GENL_ADMIN_PERM, 9358 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9359 NL80211_FLAG_NEED_RTNL, 9360 }, 9361 { 9362 .cmd = NL80211_CMD_NEW_STATION, 9363 .doit = nl80211_new_station, 9364 .policy = nl80211_policy, 9365 .flags = GENL_ADMIN_PERM, 9366 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9367 NL80211_FLAG_NEED_RTNL, 9368 }, 9369 { 9370 .cmd = NL80211_CMD_DEL_STATION, 9371 .doit = nl80211_del_station, 9372 .policy = nl80211_policy, 9373 .flags = GENL_ADMIN_PERM, 9374 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9375 NL80211_FLAG_NEED_RTNL, 9376 }, 9377 { 9378 .cmd = NL80211_CMD_GET_MPATH, 9379 .doit = nl80211_get_mpath, 9380 .dumpit = nl80211_dump_mpath, 9381 .policy = nl80211_policy, 9382 .flags = GENL_ADMIN_PERM, 9383 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9384 NL80211_FLAG_NEED_RTNL, 9385 }, 9386 { 9387 .cmd = NL80211_CMD_SET_MPATH, 9388 .doit = nl80211_set_mpath, 9389 .policy = nl80211_policy, 9390 .flags = GENL_ADMIN_PERM, 9391 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9392 NL80211_FLAG_NEED_RTNL, 9393 }, 9394 { 9395 .cmd = NL80211_CMD_NEW_MPATH, 9396 .doit = nl80211_new_mpath, 9397 .policy = nl80211_policy, 9398 .flags = GENL_ADMIN_PERM, 9399 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9400 NL80211_FLAG_NEED_RTNL, 9401 }, 9402 { 9403 .cmd = NL80211_CMD_DEL_MPATH, 9404 .doit = nl80211_del_mpath, 9405 .policy = nl80211_policy, 9406 .flags = GENL_ADMIN_PERM, 9407 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9408 NL80211_FLAG_NEED_RTNL, 9409 }, 9410 { 9411 .cmd = NL80211_CMD_SET_BSS, 9412 .doit = nl80211_set_bss, 9413 .policy = nl80211_policy, 9414 .flags = GENL_ADMIN_PERM, 9415 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9416 NL80211_FLAG_NEED_RTNL, 9417 }, 9418 { 9419 .cmd = NL80211_CMD_GET_REG, 9420 .doit = nl80211_get_reg, 9421 .policy = nl80211_policy, 9422 .internal_flags = NL80211_FLAG_NEED_RTNL, 9423 /* can be retrieved by unprivileged users */ 9424 }, 9425 { 9426 .cmd = NL80211_CMD_SET_REG, 9427 .doit = nl80211_set_reg, 9428 .policy = nl80211_policy, 9429 .flags = GENL_ADMIN_PERM, 9430 .internal_flags = NL80211_FLAG_NEED_RTNL, 9431 }, 9432 { 9433 .cmd = NL80211_CMD_REQ_SET_REG, 9434 .doit = nl80211_req_set_reg, 9435 .policy = nl80211_policy, 9436 .flags = GENL_ADMIN_PERM, 9437 }, 9438 { 9439 .cmd = NL80211_CMD_GET_MESH_CONFIG, 9440 .doit = nl80211_get_mesh_config, 9441 .policy = nl80211_policy, 9442 /* can be retrieved by unprivileged users */ 9443 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9444 NL80211_FLAG_NEED_RTNL, 9445 }, 9446 { 9447 .cmd = NL80211_CMD_SET_MESH_CONFIG, 9448 .doit = nl80211_update_mesh_config, 9449 .policy = nl80211_policy, 9450 .flags = GENL_ADMIN_PERM, 9451 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9452 NL80211_FLAG_NEED_RTNL, 9453 }, 9454 { 9455 .cmd = NL80211_CMD_TRIGGER_SCAN, 9456 .doit = nl80211_trigger_scan, 9457 .policy = nl80211_policy, 9458 .flags = GENL_ADMIN_PERM, 9459 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9460 NL80211_FLAG_NEED_RTNL, 9461 }, 9462 { 9463 .cmd = NL80211_CMD_GET_SCAN, 9464 .policy = nl80211_policy, 9465 .dumpit = nl80211_dump_scan, 9466 }, 9467 { 9468 .cmd = NL80211_CMD_START_SCHED_SCAN, 9469 .doit = nl80211_start_sched_scan, 9470 .policy = nl80211_policy, 9471 .flags = GENL_ADMIN_PERM, 9472 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9473 NL80211_FLAG_NEED_RTNL, 9474 }, 9475 { 9476 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 9477 .doit = nl80211_stop_sched_scan, 9478 .policy = nl80211_policy, 9479 .flags = GENL_ADMIN_PERM, 9480 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9481 NL80211_FLAG_NEED_RTNL, 9482 }, 9483 { 9484 .cmd = NL80211_CMD_AUTHENTICATE, 9485 .doit = nl80211_authenticate, 9486 .policy = nl80211_policy, 9487 .flags = GENL_ADMIN_PERM, 9488 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9489 NL80211_FLAG_NEED_RTNL, 9490 }, 9491 { 9492 .cmd = NL80211_CMD_ASSOCIATE, 9493 .doit = nl80211_associate, 9494 .policy = nl80211_policy, 9495 .flags = GENL_ADMIN_PERM, 9496 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9497 NL80211_FLAG_NEED_RTNL, 9498 }, 9499 { 9500 .cmd = NL80211_CMD_DEAUTHENTICATE, 9501 .doit = nl80211_deauthenticate, 9502 .policy = nl80211_policy, 9503 .flags = GENL_ADMIN_PERM, 9504 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9505 NL80211_FLAG_NEED_RTNL, 9506 }, 9507 { 9508 .cmd = NL80211_CMD_DISASSOCIATE, 9509 .doit = nl80211_disassociate, 9510 .policy = nl80211_policy, 9511 .flags = GENL_ADMIN_PERM, 9512 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9513 NL80211_FLAG_NEED_RTNL, 9514 }, 9515 { 9516 .cmd = NL80211_CMD_JOIN_IBSS, 9517 .doit = nl80211_join_ibss, 9518 .policy = nl80211_policy, 9519 .flags = GENL_ADMIN_PERM, 9520 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9521 NL80211_FLAG_NEED_RTNL, 9522 }, 9523 { 9524 .cmd = NL80211_CMD_LEAVE_IBSS, 9525 .doit = nl80211_leave_ibss, 9526 .policy = nl80211_policy, 9527 .flags = GENL_ADMIN_PERM, 9528 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9529 NL80211_FLAG_NEED_RTNL, 9530 }, 9531 #ifdef CONFIG_NL80211_TESTMODE 9532 { 9533 .cmd = NL80211_CMD_TESTMODE, 9534 .doit = nl80211_testmode_do, 9535 .dumpit = nl80211_testmode_dump, 9536 .policy = nl80211_policy, 9537 .flags = GENL_ADMIN_PERM, 9538 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9539 NL80211_FLAG_NEED_RTNL, 9540 }, 9541 #endif 9542 { 9543 .cmd = NL80211_CMD_CONNECT, 9544 .doit = nl80211_connect, 9545 .policy = nl80211_policy, 9546 .flags = GENL_ADMIN_PERM, 9547 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9548 NL80211_FLAG_NEED_RTNL, 9549 }, 9550 { 9551 .cmd = NL80211_CMD_DISCONNECT, 9552 .doit = nl80211_disconnect, 9553 .policy = nl80211_policy, 9554 .flags = GENL_ADMIN_PERM, 9555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9556 NL80211_FLAG_NEED_RTNL, 9557 }, 9558 { 9559 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 9560 .doit = nl80211_wiphy_netns, 9561 .policy = nl80211_policy, 9562 .flags = GENL_ADMIN_PERM, 9563 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9564 NL80211_FLAG_NEED_RTNL, 9565 }, 9566 { 9567 .cmd = NL80211_CMD_GET_SURVEY, 9568 .policy = nl80211_policy, 9569 .dumpit = nl80211_dump_survey, 9570 }, 9571 { 9572 .cmd = NL80211_CMD_SET_PMKSA, 9573 .doit = nl80211_setdel_pmksa, 9574 .policy = nl80211_policy, 9575 .flags = GENL_ADMIN_PERM, 9576 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9577 NL80211_FLAG_NEED_RTNL, 9578 }, 9579 { 9580 .cmd = NL80211_CMD_DEL_PMKSA, 9581 .doit = nl80211_setdel_pmksa, 9582 .policy = nl80211_policy, 9583 .flags = GENL_ADMIN_PERM, 9584 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9585 NL80211_FLAG_NEED_RTNL, 9586 }, 9587 { 9588 .cmd = NL80211_CMD_FLUSH_PMKSA, 9589 .doit = nl80211_flush_pmksa, 9590 .policy = nl80211_policy, 9591 .flags = GENL_ADMIN_PERM, 9592 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9593 NL80211_FLAG_NEED_RTNL, 9594 }, 9595 { 9596 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 9597 .doit = nl80211_remain_on_channel, 9598 .policy = nl80211_policy, 9599 .flags = GENL_ADMIN_PERM, 9600 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9601 NL80211_FLAG_NEED_RTNL, 9602 }, 9603 { 9604 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 9605 .doit = nl80211_cancel_remain_on_channel, 9606 .policy = nl80211_policy, 9607 .flags = GENL_ADMIN_PERM, 9608 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9609 NL80211_FLAG_NEED_RTNL, 9610 }, 9611 { 9612 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 9613 .doit = nl80211_set_tx_bitrate_mask, 9614 .policy = nl80211_policy, 9615 .flags = GENL_ADMIN_PERM, 9616 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9617 NL80211_FLAG_NEED_RTNL, 9618 }, 9619 { 9620 .cmd = NL80211_CMD_REGISTER_FRAME, 9621 .doit = nl80211_register_mgmt, 9622 .policy = nl80211_policy, 9623 .flags = GENL_ADMIN_PERM, 9624 .internal_flags = NL80211_FLAG_NEED_WDEV | 9625 NL80211_FLAG_NEED_RTNL, 9626 }, 9627 { 9628 .cmd = NL80211_CMD_FRAME, 9629 .doit = nl80211_tx_mgmt, 9630 .policy = nl80211_policy, 9631 .flags = GENL_ADMIN_PERM, 9632 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9633 NL80211_FLAG_NEED_RTNL, 9634 }, 9635 { 9636 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 9637 .doit = nl80211_tx_mgmt_cancel_wait, 9638 .policy = nl80211_policy, 9639 .flags = GENL_ADMIN_PERM, 9640 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9641 NL80211_FLAG_NEED_RTNL, 9642 }, 9643 { 9644 .cmd = NL80211_CMD_SET_POWER_SAVE, 9645 .doit = nl80211_set_power_save, 9646 .policy = nl80211_policy, 9647 .flags = GENL_ADMIN_PERM, 9648 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9649 NL80211_FLAG_NEED_RTNL, 9650 }, 9651 { 9652 .cmd = NL80211_CMD_GET_POWER_SAVE, 9653 .doit = nl80211_get_power_save, 9654 .policy = nl80211_policy, 9655 /* can be retrieved by unprivileged users */ 9656 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9657 NL80211_FLAG_NEED_RTNL, 9658 }, 9659 { 9660 .cmd = NL80211_CMD_SET_CQM, 9661 .doit = nl80211_set_cqm, 9662 .policy = nl80211_policy, 9663 .flags = GENL_ADMIN_PERM, 9664 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9665 NL80211_FLAG_NEED_RTNL, 9666 }, 9667 { 9668 .cmd = NL80211_CMD_SET_CHANNEL, 9669 .doit = nl80211_set_channel, 9670 .policy = nl80211_policy, 9671 .flags = GENL_ADMIN_PERM, 9672 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9673 NL80211_FLAG_NEED_RTNL, 9674 }, 9675 { 9676 .cmd = NL80211_CMD_SET_WDS_PEER, 9677 .doit = nl80211_set_wds_peer, 9678 .policy = nl80211_policy, 9679 .flags = GENL_ADMIN_PERM, 9680 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9681 NL80211_FLAG_NEED_RTNL, 9682 }, 9683 { 9684 .cmd = NL80211_CMD_JOIN_MESH, 9685 .doit = nl80211_join_mesh, 9686 .policy = nl80211_policy, 9687 .flags = GENL_ADMIN_PERM, 9688 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9689 NL80211_FLAG_NEED_RTNL, 9690 }, 9691 { 9692 .cmd = NL80211_CMD_LEAVE_MESH, 9693 .doit = nl80211_leave_mesh, 9694 .policy = nl80211_policy, 9695 .flags = GENL_ADMIN_PERM, 9696 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9697 NL80211_FLAG_NEED_RTNL, 9698 }, 9699 #ifdef CONFIG_PM 9700 { 9701 .cmd = NL80211_CMD_GET_WOWLAN, 9702 .doit = nl80211_get_wowlan, 9703 .policy = nl80211_policy, 9704 /* can be retrieved by unprivileged users */ 9705 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9706 NL80211_FLAG_NEED_RTNL, 9707 }, 9708 { 9709 .cmd = NL80211_CMD_SET_WOWLAN, 9710 .doit = nl80211_set_wowlan, 9711 .policy = nl80211_policy, 9712 .flags = GENL_ADMIN_PERM, 9713 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9714 NL80211_FLAG_NEED_RTNL, 9715 }, 9716 #endif 9717 { 9718 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 9719 .doit = nl80211_set_rekey_data, 9720 .policy = nl80211_policy, 9721 .flags = GENL_ADMIN_PERM, 9722 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9723 NL80211_FLAG_NEED_RTNL, 9724 }, 9725 { 9726 .cmd = NL80211_CMD_TDLS_MGMT, 9727 .doit = nl80211_tdls_mgmt, 9728 .policy = nl80211_policy, 9729 .flags = GENL_ADMIN_PERM, 9730 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9731 NL80211_FLAG_NEED_RTNL, 9732 }, 9733 { 9734 .cmd = NL80211_CMD_TDLS_OPER, 9735 .doit = nl80211_tdls_oper, 9736 .policy = nl80211_policy, 9737 .flags = GENL_ADMIN_PERM, 9738 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9739 NL80211_FLAG_NEED_RTNL, 9740 }, 9741 { 9742 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 9743 .doit = nl80211_register_unexpected_frame, 9744 .policy = nl80211_policy, 9745 .flags = GENL_ADMIN_PERM, 9746 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9747 NL80211_FLAG_NEED_RTNL, 9748 }, 9749 { 9750 .cmd = NL80211_CMD_PROBE_CLIENT, 9751 .doit = nl80211_probe_client, 9752 .policy = nl80211_policy, 9753 .flags = GENL_ADMIN_PERM, 9754 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9755 NL80211_FLAG_NEED_RTNL, 9756 }, 9757 { 9758 .cmd = NL80211_CMD_REGISTER_BEACONS, 9759 .doit = nl80211_register_beacons, 9760 .policy = nl80211_policy, 9761 .flags = GENL_ADMIN_PERM, 9762 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9763 NL80211_FLAG_NEED_RTNL, 9764 }, 9765 { 9766 .cmd = NL80211_CMD_SET_NOACK_MAP, 9767 .doit = nl80211_set_noack_map, 9768 .policy = nl80211_policy, 9769 .flags = GENL_ADMIN_PERM, 9770 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9771 NL80211_FLAG_NEED_RTNL, 9772 }, 9773 { 9774 .cmd = NL80211_CMD_START_P2P_DEVICE, 9775 .doit = nl80211_start_p2p_device, 9776 .policy = nl80211_policy, 9777 .flags = GENL_ADMIN_PERM, 9778 .internal_flags = NL80211_FLAG_NEED_WDEV | 9779 NL80211_FLAG_NEED_RTNL, 9780 }, 9781 { 9782 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 9783 .doit = nl80211_stop_p2p_device, 9784 .policy = nl80211_policy, 9785 .flags = GENL_ADMIN_PERM, 9786 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9787 NL80211_FLAG_NEED_RTNL, 9788 }, 9789 { 9790 .cmd = NL80211_CMD_SET_MCAST_RATE, 9791 .doit = nl80211_set_mcast_rate, 9792 .policy = nl80211_policy, 9793 .flags = GENL_ADMIN_PERM, 9794 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9795 NL80211_FLAG_NEED_RTNL, 9796 }, 9797 { 9798 .cmd = NL80211_CMD_SET_MAC_ACL, 9799 .doit = nl80211_set_mac_acl, 9800 .policy = nl80211_policy, 9801 .flags = GENL_ADMIN_PERM, 9802 .internal_flags = NL80211_FLAG_NEED_NETDEV | 9803 NL80211_FLAG_NEED_RTNL, 9804 }, 9805 { 9806 .cmd = NL80211_CMD_RADAR_DETECT, 9807 .doit = nl80211_start_radar_detection, 9808 .policy = nl80211_policy, 9809 .flags = GENL_ADMIN_PERM, 9810 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9811 NL80211_FLAG_NEED_RTNL, 9812 }, 9813 { 9814 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 9815 .doit = nl80211_get_protocol_features, 9816 .policy = nl80211_policy, 9817 }, 9818 { 9819 .cmd = NL80211_CMD_UPDATE_FT_IES, 9820 .doit = nl80211_update_ft_ies, 9821 .policy = nl80211_policy, 9822 .flags = GENL_ADMIN_PERM, 9823 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9824 NL80211_FLAG_NEED_RTNL, 9825 }, 9826 { 9827 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 9828 .doit = nl80211_crit_protocol_start, 9829 .policy = nl80211_policy, 9830 .flags = GENL_ADMIN_PERM, 9831 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9832 NL80211_FLAG_NEED_RTNL, 9833 }, 9834 { 9835 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 9836 .doit = nl80211_crit_protocol_stop, 9837 .policy = nl80211_policy, 9838 .flags = GENL_ADMIN_PERM, 9839 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 9840 NL80211_FLAG_NEED_RTNL, 9841 }, 9842 { 9843 .cmd = NL80211_CMD_GET_COALESCE, 9844 .doit = nl80211_get_coalesce, 9845 .policy = nl80211_policy, 9846 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9847 NL80211_FLAG_NEED_RTNL, 9848 }, 9849 { 9850 .cmd = NL80211_CMD_SET_COALESCE, 9851 .doit = nl80211_set_coalesce, 9852 .policy = nl80211_policy, 9853 .flags = GENL_ADMIN_PERM, 9854 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9855 NL80211_FLAG_NEED_RTNL, 9856 }, 9857 { 9858 .cmd = NL80211_CMD_CHANNEL_SWITCH, 9859 .doit = nl80211_channel_switch, 9860 .policy = nl80211_policy, 9861 .flags = GENL_ADMIN_PERM, 9862 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9863 NL80211_FLAG_NEED_RTNL, 9864 }, 9865 { 9866 .cmd = NL80211_CMD_VENDOR, 9867 .doit = nl80211_vendor_cmd, 9868 .policy = nl80211_policy, 9869 .flags = GENL_ADMIN_PERM, 9870 .internal_flags = NL80211_FLAG_NEED_WIPHY | 9871 NL80211_FLAG_NEED_RTNL, 9872 }, 9873 { 9874 .cmd = NL80211_CMD_SET_QOS_MAP, 9875 .doit = nl80211_set_qos_map, 9876 .policy = nl80211_policy, 9877 .flags = GENL_ADMIN_PERM, 9878 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 9879 NL80211_FLAG_NEED_RTNL, 9880 }, 9881 }; 9882 9883 /* notification functions */ 9884 9885 void nl80211_notify_dev_rename(struct cfg80211_registered_device *rdev) 9886 { 9887 struct sk_buff *msg; 9888 struct nl80211_dump_wiphy_state state = {}; 9889 9890 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9891 if (!msg) 9892 return; 9893 9894 if (nl80211_send_wiphy(rdev, msg, 0, 0, 0, &state) < 0) { 9895 nlmsg_free(msg); 9896 return; 9897 } 9898 9899 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 9900 NL80211_MCGRP_CONFIG, GFP_KERNEL); 9901 } 9902 9903 static int nl80211_add_scan_req(struct sk_buff *msg, 9904 struct cfg80211_registered_device *rdev) 9905 { 9906 struct cfg80211_scan_request *req = rdev->scan_req; 9907 struct nlattr *nest; 9908 int i; 9909 9910 if (WARN_ON(!req)) 9911 return 0; 9912 9913 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 9914 if (!nest) 9915 goto nla_put_failure; 9916 for (i = 0; i < req->n_ssids; i++) { 9917 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 9918 goto nla_put_failure; 9919 } 9920 nla_nest_end(msg, nest); 9921 9922 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 9923 if (!nest) 9924 goto nla_put_failure; 9925 for (i = 0; i < req->n_channels; i++) { 9926 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 9927 goto nla_put_failure; 9928 } 9929 nla_nest_end(msg, nest); 9930 9931 if (req->ie && 9932 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 9933 goto nla_put_failure; 9934 9935 if (req->flags && 9936 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 9937 goto nla_put_failure; 9938 9939 return 0; 9940 nla_put_failure: 9941 return -ENOBUFS; 9942 } 9943 9944 static int nl80211_send_scan_msg(struct sk_buff *msg, 9945 struct cfg80211_registered_device *rdev, 9946 struct wireless_dev *wdev, 9947 u32 portid, u32 seq, int flags, 9948 u32 cmd) 9949 { 9950 void *hdr; 9951 9952 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9953 if (!hdr) 9954 return -1; 9955 9956 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9957 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 9958 wdev->netdev->ifindex)) || 9959 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 9960 goto nla_put_failure; 9961 9962 /* ignore errors and send incomplete event anyway */ 9963 nl80211_add_scan_req(msg, rdev); 9964 9965 return genlmsg_end(msg, hdr); 9966 9967 nla_put_failure: 9968 genlmsg_cancel(msg, hdr); 9969 return -EMSGSIZE; 9970 } 9971 9972 static int 9973 nl80211_send_sched_scan_msg(struct sk_buff *msg, 9974 struct cfg80211_registered_device *rdev, 9975 struct net_device *netdev, 9976 u32 portid, u32 seq, int flags, u32 cmd) 9977 { 9978 void *hdr; 9979 9980 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 9981 if (!hdr) 9982 return -1; 9983 9984 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 9985 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 9986 goto nla_put_failure; 9987 9988 return genlmsg_end(msg, hdr); 9989 9990 nla_put_failure: 9991 genlmsg_cancel(msg, hdr); 9992 return -EMSGSIZE; 9993 } 9994 9995 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 9996 struct wireless_dev *wdev) 9997 { 9998 struct sk_buff *msg; 9999 10000 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10001 if (!msg) 10002 return; 10003 10004 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 10005 NL80211_CMD_TRIGGER_SCAN) < 0) { 10006 nlmsg_free(msg); 10007 return; 10008 } 10009 10010 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10011 NL80211_MCGRP_SCAN, GFP_KERNEL); 10012 } 10013 10014 void nl80211_send_scan_done(struct cfg80211_registered_device *rdev, 10015 struct wireless_dev *wdev) 10016 { 10017 struct sk_buff *msg; 10018 10019 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10020 if (!msg) 10021 return; 10022 10023 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 10024 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 10025 nlmsg_free(msg); 10026 return; 10027 } 10028 10029 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10030 NL80211_MCGRP_SCAN, GFP_KERNEL); 10031 } 10032 10033 void nl80211_send_scan_aborted(struct cfg80211_registered_device *rdev, 10034 struct wireless_dev *wdev) 10035 { 10036 struct sk_buff *msg; 10037 10038 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10039 if (!msg) 10040 return; 10041 10042 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 10043 NL80211_CMD_SCAN_ABORTED) < 0) { 10044 nlmsg_free(msg); 10045 return; 10046 } 10047 10048 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10049 NL80211_MCGRP_SCAN, GFP_KERNEL); 10050 } 10051 10052 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 10053 struct net_device *netdev) 10054 { 10055 struct sk_buff *msg; 10056 10057 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10058 if (!msg) 10059 return; 10060 10061 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 10062 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 10063 nlmsg_free(msg); 10064 return; 10065 } 10066 10067 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10068 NL80211_MCGRP_SCAN, GFP_KERNEL); 10069 } 10070 10071 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 10072 struct net_device *netdev, u32 cmd) 10073 { 10074 struct sk_buff *msg; 10075 10076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10077 if (!msg) 10078 return; 10079 10080 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 10081 nlmsg_free(msg); 10082 return; 10083 } 10084 10085 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10086 NL80211_MCGRP_SCAN, GFP_KERNEL); 10087 } 10088 10089 /* 10090 * This can happen on global regulatory changes or device specific settings 10091 * based on custom world regulatory domains. 10092 */ 10093 void nl80211_send_reg_change_event(struct regulatory_request *request) 10094 { 10095 struct sk_buff *msg; 10096 void *hdr; 10097 10098 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10099 if (!msg) 10100 return; 10101 10102 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); 10103 if (!hdr) { 10104 nlmsg_free(msg); 10105 return; 10106 } 10107 10108 /* Userspace can always count this one always being set */ 10109 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 10110 goto nla_put_failure; 10111 10112 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 10113 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10114 NL80211_REGDOM_TYPE_WORLD)) 10115 goto nla_put_failure; 10116 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 10117 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10118 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 10119 goto nla_put_failure; 10120 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 10121 request->intersect) { 10122 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10123 NL80211_REGDOM_TYPE_INTERSECTION)) 10124 goto nla_put_failure; 10125 } else { 10126 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10127 NL80211_REGDOM_TYPE_COUNTRY) || 10128 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 10129 request->alpha2)) 10130 goto nla_put_failure; 10131 } 10132 10133 if (request->wiphy_idx != WIPHY_IDX_INVALID && 10134 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 10135 goto nla_put_failure; 10136 10137 genlmsg_end(msg, hdr); 10138 10139 rcu_read_lock(); 10140 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 10141 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 10142 rcu_read_unlock(); 10143 10144 return; 10145 10146 nla_put_failure: 10147 genlmsg_cancel(msg, hdr); 10148 nlmsg_free(msg); 10149 } 10150 10151 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 10152 struct net_device *netdev, 10153 const u8 *buf, size_t len, 10154 enum nl80211_commands cmd, gfp_t gfp) 10155 { 10156 struct sk_buff *msg; 10157 void *hdr; 10158 10159 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10160 if (!msg) 10161 return; 10162 10163 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10164 if (!hdr) { 10165 nlmsg_free(msg); 10166 return; 10167 } 10168 10169 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10170 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10171 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 10172 goto nla_put_failure; 10173 10174 genlmsg_end(msg, hdr); 10175 10176 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10177 NL80211_MCGRP_MLME, gfp); 10178 return; 10179 10180 nla_put_failure: 10181 genlmsg_cancel(msg, hdr); 10182 nlmsg_free(msg); 10183 } 10184 10185 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 10186 struct net_device *netdev, const u8 *buf, 10187 size_t len, gfp_t gfp) 10188 { 10189 nl80211_send_mlme_event(rdev, netdev, buf, len, 10190 NL80211_CMD_AUTHENTICATE, gfp); 10191 } 10192 10193 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 10194 struct net_device *netdev, const u8 *buf, 10195 size_t len, gfp_t gfp) 10196 { 10197 nl80211_send_mlme_event(rdev, netdev, buf, len, 10198 NL80211_CMD_ASSOCIATE, gfp); 10199 } 10200 10201 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 10202 struct net_device *netdev, const u8 *buf, 10203 size_t len, gfp_t gfp) 10204 { 10205 nl80211_send_mlme_event(rdev, netdev, buf, len, 10206 NL80211_CMD_DEAUTHENTICATE, gfp); 10207 } 10208 10209 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 10210 struct net_device *netdev, const u8 *buf, 10211 size_t len, gfp_t gfp) 10212 { 10213 nl80211_send_mlme_event(rdev, netdev, buf, len, 10214 NL80211_CMD_DISASSOCIATE, gfp); 10215 } 10216 10217 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 10218 size_t len) 10219 { 10220 struct wireless_dev *wdev = dev->ieee80211_ptr; 10221 struct wiphy *wiphy = wdev->wiphy; 10222 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10223 const struct ieee80211_mgmt *mgmt = (void *)buf; 10224 u32 cmd; 10225 10226 if (WARN_ON(len < 2)) 10227 return; 10228 10229 if (ieee80211_is_deauth(mgmt->frame_control)) 10230 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 10231 else 10232 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 10233 10234 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 10235 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC); 10236 } 10237 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 10238 10239 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 10240 struct net_device *netdev, int cmd, 10241 const u8 *addr, gfp_t gfp) 10242 { 10243 struct sk_buff *msg; 10244 void *hdr; 10245 10246 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10247 if (!msg) 10248 return; 10249 10250 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10251 if (!hdr) { 10252 nlmsg_free(msg); 10253 return; 10254 } 10255 10256 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10257 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10258 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 10259 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 10260 goto nla_put_failure; 10261 10262 genlmsg_end(msg, hdr); 10263 10264 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10265 NL80211_MCGRP_MLME, gfp); 10266 return; 10267 10268 nla_put_failure: 10269 genlmsg_cancel(msg, hdr); 10270 nlmsg_free(msg); 10271 } 10272 10273 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 10274 struct net_device *netdev, const u8 *addr, 10275 gfp_t gfp) 10276 { 10277 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 10278 addr, gfp); 10279 } 10280 10281 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 10282 struct net_device *netdev, const u8 *addr, 10283 gfp_t gfp) 10284 { 10285 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 10286 addr, gfp); 10287 } 10288 10289 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 10290 struct net_device *netdev, const u8 *bssid, 10291 const u8 *req_ie, size_t req_ie_len, 10292 const u8 *resp_ie, size_t resp_ie_len, 10293 u16 status, gfp_t gfp) 10294 { 10295 struct sk_buff *msg; 10296 void *hdr; 10297 10298 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10299 if (!msg) 10300 return; 10301 10302 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 10303 if (!hdr) { 10304 nlmsg_free(msg); 10305 return; 10306 } 10307 10308 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10309 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10310 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 10311 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 10312 (req_ie && 10313 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 10314 (resp_ie && 10315 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 10316 goto nla_put_failure; 10317 10318 genlmsg_end(msg, hdr); 10319 10320 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10321 NL80211_MCGRP_MLME, gfp); 10322 return; 10323 10324 nla_put_failure: 10325 genlmsg_cancel(msg, hdr); 10326 nlmsg_free(msg); 10327 10328 } 10329 10330 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 10331 struct net_device *netdev, const u8 *bssid, 10332 const u8 *req_ie, size_t req_ie_len, 10333 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 10334 { 10335 struct sk_buff *msg; 10336 void *hdr; 10337 10338 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10339 if (!msg) 10340 return; 10341 10342 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 10343 if (!hdr) { 10344 nlmsg_free(msg); 10345 return; 10346 } 10347 10348 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10349 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10350 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 10351 (req_ie && 10352 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 10353 (resp_ie && 10354 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 10355 goto nla_put_failure; 10356 10357 genlmsg_end(msg, hdr); 10358 10359 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10360 NL80211_MCGRP_MLME, gfp); 10361 return; 10362 10363 nla_put_failure: 10364 genlmsg_cancel(msg, hdr); 10365 nlmsg_free(msg); 10366 10367 } 10368 10369 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 10370 struct net_device *netdev, u16 reason, 10371 const u8 *ie, size_t ie_len, bool from_ap) 10372 { 10373 struct sk_buff *msg; 10374 void *hdr; 10375 10376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10377 if (!msg) 10378 return; 10379 10380 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 10381 if (!hdr) { 10382 nlmsg_free(msg); 10383 return; 10384 } 10385 10386 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10387 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10388 (from_ap && reason && 10389 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 10390 (from_ap && 10391 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 10392 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 10393 goto nla_put_failure; 10394 10395 genlmsg_end(msg, hdr); 10396 10397 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10398 NL80211_MCGRP_MLME, GFP_KERNEL); 10399 return; 10400 10401 nla_put_failure: 10402 genlmsg_cancel(msg, hdr); 10403 nlmsg_free(msg); 10404 10405 } 10406 10407 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 10408 struct net_device *netdev, const u8 *bssid, 10409 gfp_t gfp) 10410 { 10411 struct sk_buff *msg; 10412 void *hdr; 10413 10414 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10415 if (!msg) 10416 return; 10417 10418 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 10419 if (!hdr) { 10420 nlmsg_free(msg); 10421 return; 10422 } 10423 10424 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10425 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10426 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10427 goto nla_put_failure; 10428 10429 genlmsg_end(msg, hdr); 10430 10431 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10432 NL80211_MCGRP_MLME, gfp); 10433 return; 10434 10435 nla_put_failure: 10436 genlmsg_cancel(msg, hdr); 10437 nlmsg_free(msg); 10438 } 10439 10440 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 10441 const u8* ie, u8 ie_len, gfp_t gfp) 10442 { 10443 struct wireless_dev *wdev = dev->ieee80211_ptr; 10444 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10445 struct sk_buff *msg; 10446 void *hdr; 10447 10448 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 10449 return; 10450 10451 trace_cfg80211_notify_new_peer_candidate(dev, addr); 10452 10453 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10454 if (!msg) 10455 return; 10456 10457 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 10458 if (!hdr) { 10459 nlmsg_free(msg); 10460 return; 10461 } 10462 10463 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10464 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10465 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 10466 (ie_len && ie && 10467 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 10468 goto nla_put_failure; 10469 10470 genlmsg_end(msg, hdr); 10471 10472 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10473 NL80211_MCGRP_MLME, gfp); 10474 return; 10475 10476 nla_put_failure: 10477 genlmsg_cancel(msg, hdr); 10478 nlmsg_free(msg); 10479 } 10480 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 10481 10482 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 10483 struct net_device *netdev, const u8 *addr, 10484 enum nl80211_key_type key_type, int key_id, 10485 const u8 *tsc, gfp_t gfp) 10486 { 10487 struct sk_buff *msg; 10488 void *hdr; 10489 10490 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10491 if (!msg) 10492 return; 10493 10494 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 10495 if (!hdr) { 10496 nlmsg_free(msg); 10497 return; 10498 } 10499 10500 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10501 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10502 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 10503 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 10504 (key_id != -1 && 10505 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 10506 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 10507 goto nla_put_failure; 10508 10509 genlmsg_end(msg, hdr); 10510 10511 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10512 NL80211_MCGRP_MLME, gfp); 10513 return; 10514 10515 nla_put_failure: 10516 genlmsg_cancel(msg, hdr); 10517 nlmsg_free(msg); 10518 } 10519 10520 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 10521 struct ieee80211_channel *channel_before, 10522 struct ieee80211_channel *channel_after) 10523 { 10524 struct sk_buff *msg; 10525 void *hdr; 10526 struct nlattr *nl_freq; 10527 10528 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 10529 if (!msg) 10530 return; 10531 10532 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 10533 if (!hdr) { 10534 nlmsg_free(msg); 10535 return; 10536 } 10537 10538 /* 10539 * Since we are applying the beacon hint to a wiphy we know its 10540 * wiphy_idx is valid 10541 */ 10542 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 10543 goto nla_put_failure; 10544 10545 /* Before */ 10546 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 10547 if (!nl_freq) 10548 goto nla_put_failure; 10549 if (nl80211_msg_put_channel(msg, channel_before, false)) 10550 goto nla_put_failure; 10551 nla_nest_end(msg, nl_freq); 10552 10553 /* After */ 10554 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 10555 if (!nl_freq) 10556 goto nla_put_failure; 10557 if (nl80211_msg_put_channel(msg, channel_after, false)) 10558 goto nla_put_failure; 10559 nla_nest_end(msg, nl_freq); 10560 10561 genlmsg_end(msg, hdr); 10562 10563 rcu_read_lock(); 10564 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 10565 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 10566 rcu_read_unlock(); 10567 10568 return; 10569 10570 nla_put_failure: 10571 genlmsg_cancel(msg, hdr); 10572 nlmsg_free(msg); 10573 } 10574 10575 static void nl80211_send_remain_on_chan_event( 10576 int cmd, struct cfg80211_registered_device *rdev, 10577 struct wireless_dev *wdev, u64 cookie, 10578 struct ieee80211_channel *chan, 10579 unsigned int duration, gfp_t gfp) 10580 { 10581 struct sk_buff *msg; 10582 void *hdr; 10583 10584 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10585 if (!msg) 10586 return; 10587 10588 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10589 if (!hdr) { 10590 nlmsg_free(msg); 10591 return; 10592 } 10593 10594 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10595 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10596 wdev->netdev->ifindex)) || 10597 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10598 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 10599 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 10600 NL80211_CHAN_NO_HT) || 10601 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 10602 goto nla_put_failure; 10603 10604 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 10605 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 10606 goto nla_put_failure; 10607 10608 genlmsg_end(msg, hdr); 10609 10610 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10611 NL80211_MCGRP_MLME, gfp); 10612 return; 10613 10614 nla_put_failure: 10615 genlmsg_cancel(msg, hdr); 10616 nlmsg_free(msg); 10617 } 10618 10619 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 10620 struct ieee80211_channel *chan, 10621 unsigned int duration, gfp_t gfp) 10622 { 10623 struct wiphy *wiphy = wdev->wiphy; 10624 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10625 10626 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 10627 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 10628 rdev, wdev, cookie, chan, 10629 duration, gfp); 10630 } 10631 EXPORT_SYMBOL(cfg80211_ready_on_channel); 10632 10633 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 10634 struct ieee80211_channel *chan, 10635 gfp_t gfp) 10636 { 10637 struct wiphy *wiphy = wdev->wiphy; 10638 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10639 10640 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 10641 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10642 rdev, wdev, cookie, chan, 0, gfp); 10643 } 10644 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 10645 10646 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 10647 struct station_info *sinfo, gfp_t gfp) 10648 { 10649 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10650 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10651 struct sk_buff *msg; 10652 10653 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 10654 10655 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10656 if (!msg) 10657 return; 10658 10659 if (nl80211_send_station(msg, 0, 0, 0, 10660 rdev, dev, mac_addr, sinfo) < 0) { 10661 nlmsg_free(msg); 10662 return; 10663 } 10664 10665 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10666 NL80211_MCGRP_MLME, gfp); 10667 } 10668 EXPORT_SYMBOL(cfg80211_new_sta); 10669 10670 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp) 10671 { 10672 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10673 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10674 struct sk_buff *msg; 10675 void *hdr; 10676 10677 trace_cfg80211_del_sta(dev, mac_addr); 10678 10679 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10680 if (!msg) 10681 return; 10682 10683 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); 10684 if (!hdr) { 10685 nlmsg_free(msg); 10686 return; 10687 } 10688 10689 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10690 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 10691 goto nla_put_failure; 10692 10693 genlmsg_end(msg, hdr); 10694 10695 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10696 NL80211_MCGRP_MLME, gfp); 10697 return; 10698 10699 nla_put_failure: 10700 genlmsg_cancel(msg, hdr); 10701 nlmsg_free(msg); 10702 } 10703 EXPORT_SYMBOL(cfg80211_del_sta); 10704 10705 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 10706 enum nl80211_connect_failed_reason reason, 10707 gfp_t gfp) 10708 { 10709 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 10710 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10711 struct sk_buff *msg; 10712 void *hdr; 10713 10714 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 10715 if (!msg) 10716 return; 10717 10718 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 10719 if (!hdr) { 10720 nlmsg_free(msg); 10721 return; 10722 } 10723 10724 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10725 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 10726 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 10727 goto nla_put_failure; 10728 10729 genlmsg_end(msg, hdr); 10730 10731 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10732 NL80211_MCGRP_MLME, gfp); 10733 return; 10734 10735 nla_put_failure: 10736 genlmsg_cancel(msg, hdr); 10737 nlmsg_free(msg); 10738 } 10739 EXPORT_SYMBOL(cfg80211_conn_failed); 10740 10741 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 10742 const u8 *addr, gfp_t gfp) 10743 { 10744 struct wireless_dev *wdev = dev->ieee80211_ptr; 10745 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 10746 struct sk_buff *msg; 10747 void *hdr; 10748 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 10749 10750 if (!nlportid) 10751 return false; 10752 10753 msg = nlmsg_new(100, gfp); 10754 if (!msg) 10755 return true; 10756 10757 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 10758 if (!hdr) { 10759 nlmsg_free(msg); 10760 return true; 10761 } 10762 10763 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10764 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 10765 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 10766 goto nla_put_failure; 10767 10768 genlmsg_end(msg, hdr); 10769 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 10770 return true; 10771 10772 nla_put_failure: 10773 genlmsg_cancel(msg, hdr); 10774 nlmsg_free(msg); 10775 return true; 10776 } 10777 10778 bool cfg80211_rx_spurious_frame(struct net_device *dev, 10779 const u8 *addr, gfp_t gfp) 10780 { 10781 struct wireless_dev *wdev = dev->ieee80211_ptr; 10782 bool ret; 10783 10784 trace_cfg80211_rx_spurious_frame(dev, addr); 10785 10786 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10787 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 10788 trace_cfg80211_return_bool(false); 10789 return false; 10790 } 10791 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 10792 addr, gfp); 10793 trace_cfg80211_return_bool(ret); 10794 return ret; 10795 } 10796 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 10797 10798 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 10799 const u8 *addr, gfp_t gfp) 10800 { 10801 struct wireless_dev *wdev = dev->ieee80211_ptr; 10802 bool ret; 10803 10804 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 10805 10806 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 10807 wdev->iftype != NL80211_IFTYPE_P2P_GO && 10808 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 10809 trace_cfg80211_return_bool(false); 10810 return false; 10811 } 10812 ret = __nl80211_unexpected_frame(dev, 10813 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 10814 addr, gfp); 10815 trace_cfg80211_return_bool(ret); 10816 return ret; 10817 } 10818 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 10819 10820 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 10821 struct wireless_dev *wdev, u32 nlportid, 10822 int freq, int sig_dbm, 10823 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 10824 { 10825 struct net_device *netdev = wdev->netdev; 10826 struct sk_buff *msg; 10827 void *hdr; 10828 10829 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10830 if (!msg) 10831 return -ENOMEM; 10832 10833 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 10834 if (!hdr) { 10835 nlmsg_free(msg); 10836 return -ENOMEM; 10837 } 10838 10839 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10840 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10841 netdev->ifindex)) || 10842 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10843 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 10844 (sig_dbm && 10845 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 10846 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 10847 (flags && 10848 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 10849 goto nla_put_failure; 10850 10851 genlmsg_end(msg, hdr); 10852 10853 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 10854 10855 nla_put_failure: 10856 genlmsg_cancel(msg, hdr); 10857 nlmsg_free(msg); 10858 return -ENOBUFS; 10859 } 10860 10861 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 10862 const u8 *buf, size_t len, bool ack, gfp_t gfp) 10863 { 10864 struct wiphy *wiphy = wdev->wiphy; 10865 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10866 struct net_device *netdev = wdev->netdev; 10867 struct sk_buff *msg; 10868 void *hdr; 10869 10870 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 10871 10872 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10873 if (!msg) 10874 return; 10875 10876 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 10877 if (!hdr) { 10878 nlmsg_free(msg); 10879 return; 10880 } 10881 10882 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10883 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10884 netdev->ifindex)) || 10885 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 10886 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 10887 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 10888 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 10889 goto nla_put_failure; 10890 10891 genlmsg_end(msg, hdr); 10892 10893 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10894 NL80211_MCGRP_MLME, gfp); 10895 return; 10896 10897 nla_put_failure: 10898 genlmsg_cancel(msg, hdr); 10899 nlmsg_free(msg); 10900 } 10901 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 10902 10903 void cfg80211_cqm_rssi_notify(struct net_device *dev, 10904 enum nl80211_cqm_rssi_threshold_event rssi_event, 10905 gfp_t gfp) 10906 { 10907 struct wireless_dev *wdev = dev->ieee80211_ptr; 10908 struct wiphy *wiphy = wdev->wiphy; 10909 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 10910 struct sk_buff *msg; 10911 struct nlattr *pinfoattr; 10912 void *hdr; 10913 10914 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 10915 10916 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10917 if (!msg) 10918 return; 10919 10920 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 10921 if (!hdr) { 10922 nlmsg_free(msg); 10923 return; 10924 } 10925 10926 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10927 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 10928 goto nla_put_failure; 10929 10930 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 10931 if (!pinfoattr) 10932 goto nla_put_failure; 10933 10934 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 10935 rssi_event)) 10936 goto nla_put_failure; 10937 10938 nla_nest_end(msg, pinfoattr); 10939 10940 genlmsg_end(msg, hdr); 10941 10942 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10943 NL80211_MCGRP_MLME, gfp); 10944 return; 10945 10946 nla_put_failure: 10947 genlmsg_cancel(msg, hdr); 10948 nlmsg_free(msg); 10949 } 10950 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 10951 10952 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 10953 struct net_device *netdev, const u8 *bssid, 10954 const u8 *replay_ctr, gfp_t gfp) 10955 { 10956 struct sk_buff *msg; 10957 struct nlattr *rekey_attr; 10958 void *hdr; 10959 10960 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 10961 if (!msg) 10962 return; 10963 10964 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 10965 if (!hdr) { 10966 nlmsg_free(msg); 10967 return; 10968 } 10969 10970 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10971 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 10972 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 10973 goto nla_put_failure; 10974 10975 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 10976 if (!rekey_attr) 10977 goto nla_put_failure; 10978 10979 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 10980 NL80211_REPLAY_CTR_LEN, replay_ctr)) 10981 goto nla_put_failure; 10982 10983 nla_nest_end(msg, rekey_attr); 10984 10985 genlmsg_end(msg, hdr); 10986 10987 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10988 NL80211_MCGRP_MLME, gfp); 10989 return; 10990 10991 nla_put_failure: 10992 genlmsg_cancel(msg, hdr); 10993 nlmsg_free(msg); 10994 } 10995 10996 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 10997 const u8 *replay_ctr, gfp_t gfp) 10998 { 10999 struct wireless_dev *wdev = dev->ieee80211_ptr; 11000 struct wiphy *wiphy = wdev->wiphy; 11001 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11002 11003 trace_cfg80211_gtk_rekey_notify(dev, bssid); 11004 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 11005 } 11006 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 11007 11008 static void 11009 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 11010 struct net_device *netdev, int index, 11011 const u8 *bssid, bool preauth, gfp_t gfp) 11012 { 11013 struct sk_buff *msg; 11014 struct nlattr *attr; 11015 void *hdr; 11016 11017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11018 if (!msg) 11019 return; 11020 11021 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 11022 if (!hdr) { 11023 nlmsg_free(msg); 11024 return; 11025 } 11026 11027 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11028 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11029 goto nla_put_failure; 11030 11031 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 11032 if (!attr) 11033 goto nla_put_failure; 11034 11035 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 11036 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 11037 (preauth && 11038 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 11039 goto nla_put_failure; 11040 11041 nla_nest_end(msg, attr); 11042 11043 genlmsg_end(msg, hdr); 11044 11045 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11046 NL80211_MCGRP_MLME, gfp); 11047 return; 11048 11049 nla_put_failure: 11050 genlmsg_cancel(msg, hdr); 11051 nlmsg_free(msg); 11052 } 11053 11054 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 11055 const u8 *bssid, bool preauth, gfp_t gfp) 11056 { 11057 struct wireless_dev *wdev = dev->ieee80211_ptr; 11058 struct wiphy *wiphy = wdev->wiphy; 11059 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11060 11061 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 11062 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 11063 } 11064 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 11065 11066 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 11067 struct net_device *netdev, 11068 struct cfg80211_chan_def *chandef, 11069 gfp_t gfp) 11070 { 11071 struct sk_buff *msg; 11072 void *hdr; 11073 11074 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11075 if (!msg) 11076 return; 11077 11078 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CH_SWITCH_NOTIFY); 11079 if (!hdr) { 11080 nlmsg_free(msg); 11081 return; 11082 } 11083 11084 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11085 goto nla_put_failure; 11086 11087 if (nl80211_send_chandef(msg, chandef)) 11088 goto nla_put_failure; 11089 11090 genlmsg_end(msg, hdr); 11091 11092 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11093 NL80211_MCGRP_MLME, gfp); 11094 return; 11095 11096 nla_put_failure: 11097 genlmsg_cancel(msg, hdr); 11098 nlmsg_free(msg); 11099 } 11100 11101 void cfg80211_ch_switch_notify(struct net_device *dev, 11102 struct cfg80211_chan_def *chandef) 11103 { 11104 struct wireless_dev *wdev = dev->ieee80211_ptr; 11105 struct wiphy *wiphy = wdev->wiphy; 11106 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11107 11108 ASSERT_WDEV_LOCK(wdev); 11109 11110 trace_cfg80211_ch_switch_notify(dev, chandef); 11111 11112 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11113 wdev->iftype != NL80211_IFTYPE_P2P_GO && 11114 wdev->iftype != NL80211_IFTYPE_ADHOC && 11115 wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 11116 return; 11117 11118 wdev->channel = chandef->chan; 11119 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL); 11120 } 11121 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 11122 11123 void cfg80211_cqm_txe_notify(struct net_device *dev, 11124 const u8 *peer, u32 num_packets, 11125 u32 rate, u32 intvl, gfp_t gfp) 11126 { 11127 struct wireless_dev *wdev = dev->ieee80211_ptr; 11128 struct wiphy *wiphy = wdev->wiphy; 11129 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11130 struct sk_buff *msg; 11131 struct nlattr *pinfoattr; 11132 void *hdr; 11133 11134 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 11135 if (!msg) 11136 return; 11137 11138 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 11139 if (!hdr) { 11140 nlmsg_free(msg); 11141 return; 11142 } 11143 11144 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11145 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11146 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 11147 goto nla_put_failure; 11148 11149 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 11150 if (!pinfoattr) 11151 goto nla_put_failure; 11152 11153 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 11154 goto nla_put_failure; 11155 11156 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 11157 goto nla_put_failure; 11158 11159 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 11160 goto nla_put_failure; 11161 11162 nla_nest_end(msg, pinfoattr); 11163 11164 genlmsg_end(msg, hdr); 11165 11166 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11167 NL80211_MCGRP_MLME, gfp); 11168 return; 11169 11170 nla_put_failure: 11171 genlmsg_cancel(msg, hdr); 11172 nlmsg_free(msg); 11173 } 11174 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 11175 11176 void 11177 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 11178 const struct cfg80211_chan_def *chandef, 11179 enum nl80211_radar_event event, 11180 struct net_device *netdev, gfp_t gfp) 11181 { 11182 struct sk_buff *msg; 11183 void *hdr; 11184 11185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11186 if (!msg) 11187 return; 11188 11189 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 11190 if (!hdr) { 11191 nlmsg_free(msg); 11192 return; 11193 } 11194 11195 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 11196 goto nla_put_failure; 11197 11198 /* NOP and radar events don't need a netdev parameter */ 11199 if (netdev) { 11200 struct wireless_dev *wdev = netdev->ieee80211_ptr; 11201 11202 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11203 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11204 goto nla_put_failure; 11205 } 11206 11207 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 11208 goto nla_put_failure; 11209 11210 if (nl80211_send_chandef(msg, chandef)) 11211 goto nla_put_failure; 11212 11213 genlmsg_end(msg, hdr); 11214 11215 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11216 NL80211_MCGRP_MLME, gfp); 11217 return; 11218 11219 nla_put_failure: 11220 genlmsg_cancel(msg, hdr); 11221 nlmsg_free(msg); 11222 } 11223 11224 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 11225 const u8 *peer, u32 num_packets, gfp_t gfp) 11226 { 11227 struct wireless_dev *wdev = dev->ieee80211_ptr; 11228 struct wiphy *wiphy = wdev->wiphy; 11229 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11230 struct sk_buff *msg; 11231 struct nlattr *pinfoattr; 11232 void *hdr; 11233 11234 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 11235 11236 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11237 if (!msg) 11238 return; 11239 11240 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 11241 if (!hdr) { 11242 nlmsg_free(msg); 11243 return; 11244 } 11245 11246 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11247 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11248 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer)) 11249 goto nla_put_failure; 11250 11251 pinfoattr = nla_nest_start(msg, NL80211_ATTR_CQM); 11252 if (!pinfoattr) 11253 goto nla_put_failure; 11254 11255 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 11256 goto nla_put_failure; 11257 11258 nla_nest_end(msg, pinfoattr); 11259 11260 genlmsg_end(msg, hdr); 11261 11262 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11263 NL80211_MCGRP_MLME, gfp); 11264 return; 11265 11266 nla_put_failure: 11267 genlmsg_cancel(msg, hdr); 11268 nlmsg_free(msg); 11269 } 11270 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 11271 11272 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 11273 u64 cookie, bool acked, gfp_t gfp) 11274 { 11275 struct wireless_dev *wdev = dev->ieee80211_ptr; 11276 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 11277 struct sk_buff *msg; 11278 void *hdr; 11279 11280 trace_cfg80211_probe_status(dev, addr, cookie, acked); 11281 11282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11283 11284 if (!msg) 11285 return; 11286 11287 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 11288 if (!hdr) { 11289 nlmsg_free(msg); 11290 return; 11291 } 11292 11293 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11294 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11295 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 11296 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 11297 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 11298 goto nla_put_failure; 11299 11300 genlmsg_end(msg, hdr); 11301 11302 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11303 NL80211_MCGRP_MLME, gfp); 11304 return; 11305 11306 nla_put_failure: 11307 genlmsg_cancel(msg, hdr); 11308 nlmsg_free(msg); 11309 } 11310 EXPORT_SYMBOL(cfg80211_probe_status); 11311 11312 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 11313 const u8 *frame, size_t len, 11314 int freq, int sig_dbm) 11315 { 11316 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11317 struct sk_buff *msg; 11318 void *hdr; 11319 struct cfg80211_beacon_registration *reg; 11320 11321 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 11322 11323 spin_lock_bh(&rdev->beacon_registrations_lock); 11324 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 11325 msg = nlmsg_new(len + 100, GFP_ATOMIC); 11326 if (!msg) { 11327 spin_unlock_bh(&rdev->beacon_registrations_lock); 11328 return; 11329 } 11330 11331 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 11332 if (!hdr) 11333 goto nla_put_failure; 11334 11335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11336 (freq && 11337 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 11338 (sig_dbm && 11339 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 11340 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 11341 goto nla_put_failure; 11342 11343 genlmsg_end(msg, hdr); 11344 11345 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 11346 } 11347 spin_unlock_bh(&rdev->beacon_registrations_lock); 11348 return; 11349 11350 nla_put_failure: 11351 spin_unlock_bh(&rdev->beacon_registrations_lock); 11352 if (hdr) 11353 genlmsg_cancel(msg, hdr); 11354 nlmsg_free(msg); 11355 } 11356 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 11357 11358 #ifdef CONFIG_PM 11359 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 11360 struct cfg80211_wowlan_wakeup *wakeup, 11361 gfp_t gfp) 11362 { 11363 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 11364 struct sk_buff *msg; 11365 void *hdr; 11366 int size = 200; 11367 11368 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 11369 11370 if (wakeup) 11371 size += wakeup->packet_present_len; 11372 11373 msg = nlmsg_new(size, gfp); 11374 if (!msg) 11375 return; 11376 11377 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 11378 if (!hdr) 11379 goto free_msg; 11380 11381 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11382 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11383 goto free_msg; 11384 11385 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11386 wdev->netdev->ifindex)) 11387 goto free_msg; 11388 11389 if (wakeup) { 11390 struct nlattr *reasons; 11391 11392 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 11393 if (!reasons) 11394 goto free_msg; 11395 11396 if (wakeup->disconnect && 11397 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 11398 goto free_msg; 11399 if (wakeup->magic_pkt && 11400 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 11401 goto free_msg; 11402 if (wakeup->gtk_rekey_failure && 11403 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 11404 goto free_msg; 11405 if (wakeup->eap_identity_req && 11406 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 11407 goto free_msg; 11408 if (wakeup->four_way_handshake && 11409 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 11410 goto free_msg; 11411 if (wakeup->rfkill_release && 11412 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 11413 goto free_msg; 11414 11415 if (wakeup->pattern_idx >= 0 && 11416 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 11417 wakeup->pattern_idx)) 11418 goto free_msg; 11419 11420 if (wakeup->tcp_match && 11421 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 11422 goto free_msg; 11423 11424 if (wakeup->tcp_connlost && 11425 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 11426 goto free_msg; 11427 11428 if (wakeup->tcp_nomoretokens && 11429 nla_put_flag(msg, 11430 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 11431 goto free_msg; 11432 11433 if (wakeup->packet) { 11434 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 11435 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 11436 11437 if (!wakeup->packet_80211) { 11438 pkt_attr = 11439 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 11440 len_attr = 11441 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 11442 } 11443 11444 if (wakeup->packet_len && 11445 nla_put_u32(msg, len_attr, wakeup->packet_len)) 11446 goto free_msg; 11447 11448 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 11449 wakeup->packet)) 11450 goto free_msg; 11451 } 11452 11453 nla_nest_end(msg, reasons); 11454 } 11455 11456 genlmsg_end(msg, hdr); 11457 11458 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11459 NL80211_MCGRP_MLME, gfp); 11460 return; 11461 11462 free_msg: 11463 nlmsg_free(msg); 11464 } 11465 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 11466 #endif 11467 11468 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 11469 enum nl80211_tdls_operation oper, 11470 u16 reason_code, gfp_t gfp) 11471 { 11472 struct wireless_dev *wdev = dev->ieee80211_ptr; 11473 struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy); 11474 struct sk_buff *msg; 11475 void *hdr; 11476 11477 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 11478 reason_code); 11479 11480 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11481 if (!msg) 11482 return; 11483 11484 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 11485 if (!hdr) { 11486 nlmsg_free(msg); 11487 return; 11488 } 11489 11490 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11491 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11492 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 11493 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 11494 (reason_code > 0 && 11495 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 11496 goto nla_put_failure; 11497 11498 genlmsg_end(msg, hdr); 11499 11500 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11501 NL80211_MCGRP_MLME, gfp); 11502 return; 11503 11504 nla_put_failure: 11505 genlmsg_cancel(msg, hdr); 11506 nlmsg_free(msg); 11507 } 11508 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 11509 11510 static int nl80211_netlink_notify(struct notifier_block * nb, 11511 unsigned long state, 11512 void *_notify) 11513 { 11514 struct netlink_notify *notify = _notify; 11515 struct cfg80211_registered_device *rdev; 11516 struct wireless_dev *wdev; 11517 struct cfg80211_beacon_registration *reg, *tmp; 11518 11519 if (state != NETLINK_URELEASE) 11520 return NOTIFY_DONE; 11521 11522 rcu_read_lock(); 11523 11524 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 11525 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) 11526 cfg80211_mlme_unregister_socket(wdev, notify->portid); 11527 11528 spin_lock_bh(&rdev->beacon_registrations_lock); 11529 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 11530 list) { 11531 if (reg->nlportid == notify->portid) { 11532 list_del(®->list); 11533 kfree(reg); 11534 break; 11535 } 11536 } 11537 spin_unlock_bh(&rdev->beacon_registrations_lock); 11538 } 11539 11540 rcu_read_unlock(); 11541 11542 return NOTIFY_DONE; 11543 } 11544 11545 static struct notifier_block nl80211_netlink_notifier = { 11546 .notifier_call = nl80211_netlink_notify, 11547 }; 11548 11549 void cfg80211_ft_event(struct net_device *netdev, 11550 struct cfg80211_ft_event_params *ft_event) 11551 { 11552 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 11553 struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); 11554 struct sk_buff *msg; 11555 void *hdr; 11556 11557 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 11558 11559 if (!ft_event->target_ap) 11560 return; 11561 11562 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11563 if (!msg) 11564 return; 11565 11566 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 11567 if (!hdr) 11568 goto out; 11569 11570 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11571 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11572 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 11573 goto out; 11574 11575 if (ft_event->ies && 11576 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 11577 goto out; 11578 if (ft_event->ric_ies && 11579 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 11580 ft_event->ric_ies)) 11581 goto out; 11582 11583 genlmsg_end(msg, hdr); 11584 11585 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11586 NL80211_MCGRP_MLME, GFP_KERNEL); 11587 return; 11588 out: 11589 nlmsg_free(msg); 11590 } 11591 EXPORT_SYMBOL(cfg80211_ft_event); 11592 11593 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 11594 { 11595 struct cfg80211_registered_device *rdev; 11596 struct sk_buff *msg; 11597 void *hdr; 11598 u32 nlportid; 11599 11600 rdev = wiphy_to_dev(wdev->wiphy); 11601 if (!rdev->crit_proto_nlportid) 11602 return; 11603 11604 nlportid = rdev->crit_proto_nlportid; 11605 rdev->crit_proto_nlportid = 0; 11606 11607 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11608 if (!msg) 11609 return; 11610 11611 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 11612 if (!hdr) 11613 goto nla_put_failure; 11614 11615 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11616 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11617 goto nla_put_failure; 11618 11619 genlmsg_end(msg, hdr); 11620 11621 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11622 return; 11623 11624 nla_put_failure: 11625 if (hdr) 11626 genlmsg_cancel(msg, hdr); 11627 nlmsg_free(msg); 11628 11629 } 11630 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 11631 11632 /* initialisation/exit functions */ 11633 11634 int nl80211_init(void) 11635 { 11636 int err; 11637 11638 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 11639 nl80211_mcgrps); 11640 if (err) 11641 return err; 11642 11643 err = netlink_register_notifier(&nl80211_netlink_notifier); 11644 if (err) 11645 goto err_out; 11646 11647 return 0; 11648 err_out: 11649 genl_unregister_family(&nl80211_fam); 11650 return err; 11651 } 11652 11653 void nl80211_exit(void) 11654 { 11655 netlink_unregister_notifier(&nl80211_netlink_notifier); 11656 genl_unregister_family(&nl80211_fam); 11657 } 11658