1 #ifndef __NET_CFG80211_H 2 #define __NET_CFG80211_H 3 /* 4 * 802.11 device and configuration interface 5 * 6 * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/netdevice.h> 14 #include <linux/debugfs.h> 15 #include <linux/list.h> 16 #include <linux/netlink.h> 17 #include <linux/skbuff.h> 18 #include <linux/nl80211.h> 19 #include <linux/if_ether.h> 20 #include <linux/ieee80211.h> 21 #include <net/regulatory.h> 22 23 /* remove once we remove the wext stuff */ 24 #include <net/iw_handler.h> 25 #include <linux/wireless.h> 26 27 28 /* 29 * wireless hardware capability structures 30 */ 31 32 /** 33 * enum ieee80211_band - supported frequency bands 34 * 35 * The bands are assigned this way because the supported 36 * bitrates differ in these bands. 37 * 38 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 39 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 40 */ 41 enum ieee80211_band { 42 IEEE80211_BAND_2GHZ, 43 IEEE80211_BAND_5GHZ, 44 45 /* keep last */ 46 IEEE80211_NUM_BANDS 47 }; 48 49 /** 50 * enum ieee80211_channel_flags - channel flags 51 * 52 * Channel flags set by the regulatory control code. 53 * 54 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 55 * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted 56 * on this channel. 57 * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. 58 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 59 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 60 * is not permitted. 61 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 62 * is not permitted. 63 */ 64 enum ieee80211_channel_flags { 65 IEEE80211_CHAN_DISABLED = 1<<0, 66 IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, 67 IEEE80211_CHAN_NO_IBSS = 1<<2, 68 IEEE80211_CHAN_RADAR = 1<<3, 69 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 70 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 71 }; 72 73 #define IEEE80211_CHAN_NO_HT40 \ 74 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 75 76 /** 77 * struct ieee80211_channel - channel definition 78 * 79 * This structure describes a single channel for use 80 * with cfg80211. 81 * 82 * @center_freq: center frequency in MHz 83 * @max_bandwidth: maximum allowed bandwidth for this channel, in MHz 84 * @hw_value: hardware-specific value for the channel 85 * @flags: channel flags from &enum ieee80211_channel_flags. 86 * @orig_flags: channel flags at registration time, used by regulatory 87 * code to support devices with additional restrictions 88 * @band: band this channel belongs to. 89 * @max_antenna_gain: maximum antenna gain in dBi 90 * @max_power: maximum transmission power (in dBm) 91 * @beacon_found: helper to regulatory code to indicate when a beacon 92 * has been found on this channel. Use regulatory_hint_found_beacon() 93 * to enable this, this is is useful only on 5 GHz band. 94 * @orig_mag: internal use 95 * @orig_mpwr: internal use 96 */ 97 struct ieee80211_channel { 98 enum ieee80211_band band; 99 u16 center_freq; 100 u8 max_bandwidth; 101 u16 hw_value; 102 u32 flags; 103 int max_antenna_gain; 104 int max_power; 105 bool beacon_found; 106 u32 orig_flags; 107 int orig_mag, orig_mpwr; 108 }; 109 110 /** 111 * enum ieee80211_rate_flags - rate flags 112 * 113 * Hardware/specification flags for rates. These are structured 114 * in a way that allows using the same bitrate structure for 115 * different bands/PHY modes. 116 * 117 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 118 * preamble on this bitrate; only relevant in 2.4GHz band and 119 * with CCK rates. 120 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 121 * when used with 802.11a (on the 5 GHz band); filled by the 122 * core code when registering the wiphy. 123 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 124 * when used with 802.11b (on the 2.4 GHz band); filled by the 125 * core code when registering the wiphy. 126 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 127 * when used with 802.11g (on the 2.4 GHz band); filled by the 128 * core code when registering the wiphy. 129 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 130 */ 131 enum ieee80211_rate_flags { 132 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 133 IEEE80211_RATE_MANDATORY_A = 1<<1, 134 IEEE80211_RATE_MANDATORY_B = 1<<2, 135 IEEE80211_RATE_MANDATORY_G = 1<<3, 136 IEEE80211_RATE_ERP_G = 1<<4, 137 }; 138 139 /** 140 * struct ieee80211_rate - bitrate definition 141 * 142 * This structure describes a bitrate that an 802.11 PHY can 143 * operate with. The two values @hw_value and @hw_value_short 144 * are only for driver use when pointers to this structure are 145 * passed around. 146 * 147 * @flags: rate-specific flags 148 * @bitrate: bitrate in units of 100 Kbps 149 * @hw_value: driver/hardware value for this rate 150 * @hw_value_short: driver/hardware value for this rate when 151 * short preamble is used 152 */ 153 struct ieee80211_rate { 154 u32 flags; 155 u16 bitrate; 156 u16 hw_value, hw_value_short; 157 }; 158 159 /** 160 * struct ieee80211_sta_ht_cap - STA's HT capabilities 161 * 162 * This structure describes most essential parameters needed 163 * to describe 802.11n HT capabilities for an STA. 164 * 165 * @ht_supported: is HT supported by the STA 166 * @cap: HT capabilities map as described in 802.11n spec 167 * @ampdu_factor: Maximum A-MPDU length factor 168 * @ampdu_density: Minimum A-MPDU spacing 169 * @mcs: Supported MCS rates 170 */ 171 struct ieee80211_sta_ht_cap { 172 u16 cap; /* use IEEE80211_HT_CAP_ */ 173 bool ht_supported; 174 u8 ampdu_factor; 175 u8 ampdu_density; 176 struct ieee80211_mcs_info mcs; 177 }; 178 179 /** 180 * struct ieee80211_supported_band - frequency band definition 181 * 182 * This structure describes a frequency band a wiphy 183 * is able to operate in. 184 * 185 * @channels: Array of channels the hardware can operate in 186 * in this band. 187 * @band: the band this structure represents 188 * @n_channels: Number of channels in @channels 189 * @bitrates: Array of bitrates the hardware can operate with 190 * in this band. Must be sorted to give a valid "supported 191 * rates" IE, i.e. CCK rates first, then OFDM. 192 * @n_bitrates: Number of bitrates in @bitrates 193 */ 194 struct ieee80211_supported_band { 195 struct ieee80211_channel *channels; 196 struct ieee80211_rate *bitrates; 197 enum ieee80211_band band; 198 int n_channels; 199 int n_bitrates; 200 struct ieee80211_sta_ht_cap ht_cap; 201 }; 202 203 /* 204 * Wireless hardware/device configuration structures and methods 205 */ 206 207 /** 208 * struct vif_params - describes virtual interface parameters 209 * @mesh_id: mesh ID to use 210 * @mesh_id_len: length of the mesh ID 211 */ 212 struct vif_params { 213 u8 *mesh_id; 214 int mesh_id_len; 215 }; 216 217 /** 218 * struct key_params - key information 219 * 220 * Information about a key 221 * 222 * @key: key material 223 * @key_len: length of key material 224 * @cipher: cipher suite selector 225 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 226 * with the get_key() callback, must be in little endian, 227 * length given by @seq_len. 228 */ 229 struct key_params { 230 u8 *key; 231 u8 *seq; 232 int key_len; 233 int seq_len; 234 u32 cipher; 235 }; 236 237 /** 238 * struct beacon_parameters - beacon parameters 239 * 240 * Used to configure the beacon for an interface. 241 * 242 * @head: head portion of beacon (before TIM IE) 243 * or %NULL if not changed 244 * @tail: tail portion of beacon (after TIM IE) 245 * or %NULL if not changed 246 * @interval: beacon interval or zero if not changed 247 * @dtim_period: DTIM period or zero if not changed 248 * @head_len: length of @head 249 * @tail_len: length of @tail 250 */ 251 struct beacon_parameters { 252 u8 *head, *tail; 253 int interval, dtim_period; 254 int head_len, tail_len; 255 }; 256 257 /** 258 * enum plink_action - actions to perform in mesh peers 259 * 260 * @PLINK_ACTION_INVALID: action 0 is reserved 261 * @PLINK_ACTION_OPEN: start mesh peer link establishment 262 * @PLINK_ACTION_BLOCL: block traffic from this mesh peer 263 */ 264 enum plink_actions { 265 PLINK_ACTION_INVALID, 266 PLINK_ACTION_OPEN, 267 PLINK_ACTION_BLOCK, 268 }; 269 270 /** 271 * struct station_parameters - station parameters 272 * 273 * Used to change and create a new station. 274 * 275 * @vlan: vlan interface station should belong to 276 * @supported_rates: supported rates in IEEE 802.11 format 277 * (or NULL for no change) 278 * @supported_rates_len: number of supported rates 279 * @sta_flags_mask: station flags that changed 280 * (bitmask of BIT(NL80211_STA_FLAG_...)) 281 * @sta_flags_set: station flags values 282 * (bitmask of BIT(NL80211_STA_FLAG_...)) 283 * @listen_interval: listen interval or -1 for no change 284 * @aid: AID or zero for no change 285 */ 286 struct station_parameters { 287 u8 *supported_rates; 288 struct net_device *vlan; 289 u32 sta_flags_mask, sta_flags_set; 290 int listen_interval; 291 u16 aid; 292 u8 supported_rates_len; 293 u8 plink_action; 294 struct ieee80211_ht_cap *ht_capa; 295 }; 296 297 /** 298 * enum station_info_flags - station information flags 299 * 300 * Used by the driver to indicate which info in &struct station_info 301 * it has filled in during get_station() or dump_station(). 302 * 303 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 304 * @STATION_INFO_RX_BYTES: @rx_bytes filled 305 * @STATION_INFO_TX_BYTES: @tx_bytes filled 306 * @STATION_INFO_LLID: @llid filled 307 * @STATION_INFO_PLID: @plid filled 308 * @STATION_INFO_PLINK_STATE: @plink_state filled 309 * @STATION_INFO_SIGNAL: @signal filled 310 * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled 311 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 312 * @STATION_INFO_RX_PACKETS: @rx_packets filled 313 * @STATION_INFO_TX_PACKETS: @tx_packets filled 314 */ 315 enum station_info_flags { 316 STATION_INFO_INACTIVE_TIME = 1<<0, 317 STATION_INFO_RX_BYTES = 1<<1, 318 STATION_INFO_TX_BYTES = 1<<2, 319 STATION_INFO_LLID = 1<<3, 320 STATION_INFO_PLID = 1<<4, 321 STATION_INFO_PLINK_STATE = 1<<5, 322 STATION_INFO_SIGNAL = 1<<6, 323 STATION_INFO_TX_BITRATE = 1<<7, 324 STATION_INFO_RX_PACKETS = 1<<8, 325 STATION_INFO_TX_PACKETS = 1<<9, 326 }; 327 328 /** 329 * enum station_info_rate_flags - bitrate info flags 330 * 331 * Used by the driver to indicate the specific rate transmission 332 * type for 802.11n transmissions. 333 * 334 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled 335 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission 336 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 337 */ 338 enum rate_info_flags { 339 RATE_INFO_FLAGS_MCS = 1<<0, 340 RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, 341 RATE_INFO_FLAGS_SHORT_GI = 1<<2, 342 }; 343 344 /** 345 * struct rate_info - bitrate information 346 * 347 * Information about a receiving or transmitting bitrate 348 * 349 * @flags: bitflag of flags from &enum rate_info_flags 350 * @mcs: mcs index if struct describes a 802.11n bitrate 351 * @legacy: bitrate in 100kbit/s for 802.11abg 352 */ 353 struct rate_info { 354 u8 flags; 355 u8 mcs; 356 u16 legacy; 357 }; 358 359 /** 360 * struct station_info - station information 361 * 362 * Station information filled by driver for get_station() and dump_station. 363 * 364 * @filled: bitflag of flags from &enum station_info_flags 365 * @inactive_time: time since last station activity (tx/rx) in milliseconds 366 * @rx_bytes: bytes received from this station 367 * @tx_bytes: bytes transmitted to this station 368 * @llid: mesh local link id 369 * @plid: mesh peer link id 370 * @plink_state: mesh peer link state 371 * @signal: signal strength of last received packet in dBm 372 * @txrate: current unicast bitrate to this station 373 * @rx_packets: packets received from this station 374 * @tx_packets: packets transmitted to this station 375 */ 376 struct station_info { 377 u32 filled; 378 u32 inactive_time; 379 u32 rx_bytes; 380 u32 tx_bytes; 381 u16 llid; 382 u16 plid; 383 u8 plink_state; 384 s8 signal; 385 struct rate_info txrate; 386 u32 rx_packets; 387 u32 tx_packets; 388 }; 389 390 /** 391 * enum monitor_flags - monitor flags 392 * 393 * Monitor interface configuration flags. Note that these must be the bits 394 * according to the nl80211 flags. 395 * 396 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 397 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 398 * @MONITOR_FLAG_CONTROL: pass control frames 399 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 400 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 401 */ 402 enum monitor_flags { 403 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 404 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 405 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 406 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 407 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 408 }; 409 410 /** 411 * enum mpath_info_flags - mesh path information flags 412 * 413 * Used by the driver to indicate which info in &struct mpath_info it has filled 414 * in during get_station() or dump_station(). 415 * 416 * MPATH_INFO_FRAME_QLEN: @frame_qlen filled 417 * MPATH_INFO_DSN: @dsn filled 418 * MPATH_INFO_METRIC: @metric filled 419 * MPATH_INFO_EXPTIME: @exptime filled 420 * MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 421 * MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 422 * MPATH_INFO_FLAGS: @flags filled 423 */ 424 enum mpath_info_flags { 425 MPATH_INFO_FRAME_QLEN = BIT(0), 426 MPATH_INFO_DSN = BIT(1), 427 MPATH_INFO_METRIC = BIT(2), 428 MPATH_INFO_EXPTIME = BIT(3), 429 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 430 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 431 MPATH_INFO_FLAGS = BIT(6), 432 }; 433 434 /** 435 * struct mpath_info - mesh path information 436 * 437 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 438 * 439 * @filled: bitfield of flags from &enum mpath_info_flags 440 * @frame_qlen: number of queued frames for this destination 441 * @dsn: destination sequence number 442 * @metric: metric (cost) of this mesh path 443 * @exptime: expiration time for the mesh path from now, in msecs 444 * @flags: mesh path flags 445 * @discovery_timeout: total mesh path discovery timeout, in msecs 446 * @discovery_retries: mesh path discovery retries 447 */ 448 struct mpath_info { 449 u32 filled; 450 u32 frame_qlen; 451 u32 dsn; 452 u32 metric; 453 u32 exptime; 454 u32 discovery_timeout; 455 u8 discovery_retries; 456 u8 flags; 457 }; 458 459 /** 460 * struct bss_parameters - BSS parameters 461 * 462 * Used to change BSS parameters (mainly for AP mode). 463 * 464 * @use_cts_prot: Whether to use CTS protection 465 * (0 = no, 1 = yes, -1 = do not change) 466 * @use_short_preamble: Whether the use of short preambles is allowed 467 * (0 = no, 1 = yes, -1 = do not change) 468 * @use_short_slot_time: Whether the use of short slot time is allowed 469 * (0 = no, 1 = yes, -1 = do not change) 470 * @basic_rates: basic rates in IEEE 802.11 format 471 * (or NULL for no change) 472 * @basic_rates_len: number of basic rates 473 */ 474 struct bss_parameters { 475 int use_cts_prot; 476 int use_short_preamble; 477 int use_short_slot_time; 478 u8 *basic_rates; 479 u8 basic_rates_len; 480 }; 481 482 struct mesh_config { 483 /* Timeouts in ms */ 484 /* Mesh plink management parameters */ 485 u16 dot11MeshRetryTimeout; 486 u16 dot11MeshConfirmTimeout; 487 u16 dot11MeshHoldingTimeout; 488 u16 dot11MeshMaxPeerLinks; 489 u8 dot11MeshMaxRetries; 490 u8 dot11MeshTTL; 491 bool auto_open_plinks; 492 /* HWMP parameters */ 493 u8 dot11MeshHWMPmaxPREQretries; 494 u32 path_refresh_time; 495 u16 min_discovery_timeout; 496 u32 dot11MeshHWMPactivePathTimeout; 497 u16 dot11MeshHWMPpreqMinInterval; 498 u16 dot11MeshHWMPnetDiameterTraversalTime; 499 }; 500 501 /** 502 * struct ieee80211_txq_params - TX queue parameters 503 * @queue: TX queue identifier (NL80211_TXQ_Q_*) 504 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 505 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 506 * 1..32767] 507 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 508 * 1..32767] 509 * @aifs: Arbitration interframe space [0..255] 510 */ 511 struct ieee80211_txq_params { 512 enum nl80211_txq_q queue; 513 u16 txop; 514 u16 cwmin; 515 u16 cwmax; 516 u8 aifs; 517 }; 518 519 /* from net/wireless.h */ 520 struct wiphy; 521 522 /* from net/ieee80211.h */ 523 struct ieee80211_channel; 524 525 /** 526 * struct cfg80211_ssid - SSID description 527 * @ssid: the SSID 528 * @ssid_len: length of the ssid 529 */ 530 struct cfg80211_ssid { 531 u8 ssid[IEEE80211_MAX_SSID_LEN]; 532 u8 ssid_len; 533 }; 534 535 /** 536 * struct cfg80211_scan_request - scan request description 537 * 538 * @ssids: SSIDs to scan for (active scan only) 539 * @n_ssids: number of SSIDs 540 * @channels: channels to scan on. 541 * @n_channels: number of channels for each band 542 * @ie: optional information element(s) to add into Probe Request or %NULL 543 * @ie_len: length of ie in octets 544 * @wiphy: the wiphy this was for 545 * @ifidx: the interface index 546 */ 547 struct cfg80211_scan_request { 548 struct cfg80211_ssid *ssids; 549 int n_ssids; 550 struct ieee80211_channel **channels; 551 u32 n_channels; 552 const u8 *ie; 553 size_t ie_len; 554 555 /* internal */ 556 struct wiphy *wiphy; 557 int ifidx; 558 }; 559 560 /** 561 * enum cfg80211_signal_type - signal type 562 * 563 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 564 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 565 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 566 */ 567 enum cfg80211_signal_type { 568 CFG80211_SIGNAL_TYPE_NONE, 569 CFG80211_SIGNAL_TYPE_MBM, 570 CFG80211_SIGNAL_TYPE_UNSPEC, 571 }; 572 573 /** 574 * struct cfg80211_bss - BSS description 575 * 576 * This structure describes a BSS (which may also be a mesh network) 577 * for use in scan results and similar. 578 * 579 * @bssid: BSSID of the BSS 580 * @tsf: timestamp of last received update 581 * @beacon_interval: the beacon interval as from the frame 582 * @capability: the capability field in host byte order 583 * @information_elements: the information elements (Note that there 584 * is no guarantee that these are well-formed!) 585 * @len_information_elements: total length of the information elements 586 * @signal: signal strength value (type depends on the wiphy's signal_type) 587 * @hold: BSS should not expire 588 * @free_priv: function pointer to free private data 589 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 590 */ 591 struct cfg80211_bss { 592 struct ieee80211_channel *channel; 593 594 u8 bssid[ETH_ALEN]; 595 u64 tsf; 596 u16 beacon_interval; 597 u16 capability; 598 u8 *information_elements; 599 size_t len_information_elements; 600 601 s32 signal; 602 603 void (*free_priv)(struct cfg80211_bss *bss); 604 u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); 605 }; 606 607 /** 608 * struct cfg80211_auth_request - Authentication request data 609 * 610 * This structure provides information needed to complete IEEE 802.11 611 * authentication. 612 * NOTE: This structure will likely change when more code from mac80211 is 613 * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too. 614 * Before using this in a driver that does not use mac80211, it would be better 615 * to check the status of that work and better yet, volunteer to work on it. 616 * 617 * @chan: The channel to use or %NULL if not specified (auto-select based on 618 * scan results) 619 * @peer_addr: The address of the peer STA (AP BSSID in infrastructure case); 620 * this field is required to be present; if the driver wants to help with 621 * BSS selection, it should use (yet to be added) MLME event to allow user 622 * space SME to be notified of roaming candidate, so that the SME can then 623 * use the authentication request with the recommended BSSID and whatever 624 * other data may be needed for authentication/association 625 * @ssid: SSID or %NULL if not yet available 626 * @ssid_len: Length of ssid in octets 627 * @auth_type: Authentication type (algorithm) 628 * @ie: Extra IEs to add to Authentication frame or %NULL 629 * @ie_len: Length of ie buffer in octets 630 */ 631 struct cfg80211_auth_request { 632 struct ieee80211_channel *chan; 633 u8 *peer_addr; 634 const u8 *ssid; 635 size_t ssid_len; 636 enum nl80211_auth_type auth_type; 637 const u8 *ie; 638 size_t ie_len; 639 }; 640 641 /** 642 * struct cfg80211_assoc_request - (Re)Association request data 643 * 644 * This structure provides information needed to complete IEEE 802.11 645 * (re)association. 646 * NOTE: This structure will likely change when more code from mac80211 is 647 * moved into cfg80211 so that non-mac80211 drivers can benefit from it, too. 648 * Before using this in a driver that does not use mac80211, it would be better 649 * to check the status of that work and better yet, volunteer to work on it. 650 * 651 * @chan: The channel to use or %NULL if not specified (auto-select based on 652 * scan results) 653 * @peer_addr: The address of the peer STA (AP BSSID); this field is required 654 * to be present and the STA must be in State 2 (authenticated) with the 655 * peer STA 656 * @ssid: SSID 657 * @ssid_len: Length of ssid in octets 658 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 659 * @ie_len: Length of ie buffer in octets 660 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 661 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 662 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 663 * required to assume that the port is unauthorized until authorized by 664 * user space. Otherwise, port is marked authorized by default. 665 */ 666 struct cfg80211_assoc_request { 667 struct ieee80211_channel *chan; 668 u8 *peer_addr; 669 const u8 *ssid; 670 size_t ssid_len; 671 const u8 *ie; 672 size_t ie_len; 673 bool use_mfp; 674 bool control_port; 675 }; 676 677 /** 678 * struct cfg80211_deauth_request - Deauthentication request data 679 * 680 * This structure provides information needed to complete IEEE 802.11 681 * deauthentication. 682 * 683 * @peer_addr: The address of the peer STA (AP BSSID); this field is required 684 * to be present and the STA must be authenticated with the peer STA 685 * @ie: Extra IEs to add to Deauthentication frame or %NULL 686 * @ie_len: Length of ie buffer in octets 687 */ 688 struct cfg80211_deauth_request { 689 u8 *peer_addr; 690 u16 reason_code; 691 const u8 *ie; 692 size_t ie_len; 693 }; 694 695 /** 696 * struct cfg80211_disassoc_request - Disassociation request data 697 * 698 * This structure provides information needed to complete IEEE 802.11 699 * disassocation. 700 * 701 * @peer_addr: The address of the peer STA (AP BSSID); this field is required 702 * to be present and the STA must be associated with the peer STA 703 * @ie: Extra IEs to add to Disassociation frame or %NULL 704 * @ie_len: Length of ie buffer in octets 705 */ 706 struct cfg80211_disassoc_request { 707 u8 *peer_addr; 708 u16 reason_code; 709 const u8 *ie; 710 size_t ie_len; 711 }; 712 713 /** 714 * struct cfg80211_ibss_params - IBSS parameters 715 * 716 * This structure defines the IBSS parameters for the join_ibss() 717 * method. 718 * 719 * @ssid: The SSID, will always be non-null. 720 * @ssid_len: The length of the SSID, will always be non-zero. 721 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 722 * search for IBSSs with a different BSSID. 723 * @channel: The channel to use if no IBSS can be found to join. 724 * @channel_fixed: The channel should be fixed -- do not search for 725 * IBSSs to join on other channels. 726 * @ie: information element(s) to include in the beacon 727 * @ie_len: length of that 728 * @beacon_interval: beacon interval to use 729 */ 730 struct cfg80211_ibss_params { 731 u8 *ssid; 732 u8 *bssid; 733 struct ieee80211_channel *channel; 734 u8 *ie; 735 u8 ssid_len, ie_len; 736 u16 beacon_interval; 737 bool channel_fixed; 738 }; 739 740 /** 741 * enum wiphy_params_flags - set_wiphy_params bitfield values 742 * WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 743 * WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 744 * WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 745 * WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 746 */ 747 enum wiphy_params_flags { 748 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 749 WIPHY_PARAM_RETRY_LONG = 1 << 1, 750 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 751 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 752 }; 753 754 /** 755 * enum tx_power_setting - TX power adjustment 756 * 757 * @TX_POWER_AUTOMATIC: the dbm parameter is ignored 758 * @TX_POWER_LIMITED: limit TX power by the dbm parameter 759 * @TX_POWER_FIXED: fix TX power to the dbm parameter 760 */ 761 enum tx_power_setting { 762 TX_POWER_AUTOMATIC, 763 TX_POWER_LIMITED, 764 TX_POWER_FIXED, 765 }; 766 767 /** 768 * struct cfg80211_ops - backend description for wireless configuration 769 * 770 * This struct is registered by fullmac card drivers and/or wireless stacks 771 * in order to handle configuration requests on their interfaces. 772 * 773 * All callbacks except where otherwise noted should return 0 774 * on success or a negative error code. 775 * 776 * All operations are currently invoked under rtnl for consistency with the 777 * wireless extensions but this is subject to reevaluation as soon as this 778 * code is used more widely and we have a first user without wext. 779 * 780 * @suspend: wiphy device needs to be suspended 781 * @resume: wiphy device needs to be resumed 782 * 783 * @add_virtual_intf: create a new virtual interface with the given name, 784 * must set the struct wireless_dev's iftype. 785 * 786 * @del_virtual_intf: remove the virtual interface determined by ifindex. 787 * 788 * @change_virtual_intf: change type/configuration of virtual interface, 789 * keep the struct wireless_dev's iftype updated. 790 * 791 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 792 * when adding a group key. 793 * 794 * @get_key: get information about the key with the given parameters. 795 * @mac_addr will be %NULL when requesting information for a group 796 * key. All pointers given to the @callback function need not be valid 797 * after it returns. This function should return an error if it is 798 * not possible to retrieve the key, -ENOENT if it doesn't exist. 799 * 800 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 801 * and @key_index, return -ENOENT if the key doesn't exist. 802 * 803 * @set_default_key: set the default key on an interface 804 * 805 * @set_default_mgmt_key: set the default management frame key on an interface 806 * 807 * @add_beacon: Add a beacon with given parameters, @head, @interval 808 * and @dtim_period will be valid, @tail is optional. 809 * @set_beacon: Change the beacon parameters for an access point mode 810 * interface. This should reject the call when no beacon has been 811 * configured. 812 * @del_beacon: Remove beacon configuration and stop sending the beacon. 813 * 814 * @add_station: Add a new station. 815 * 816 * @del_station: Remove a station; @mac may be NULL to remove all stations. 817 * 818 * @change_station: Modify a given station. 819 * 820 * @get_mesh_params: Put the current mesh parameters into *params 821 * 822 * @set_mesh_params: Set mesh parameters. 823 * The mask is a bitfield which tells us which parameters to 824 * set, and which to leave alone. 825 * 826 * @set_mesh_cfg: set mesh parameters (by now, just mesh id) 827 * 828 * @change_bss: Modify parameters for a given BSS. 829 * 830 * @set_txq_params: Set TX queue parameters 831 * 832 * @set_channel: Set channel 833 * 834 * @scan: Request to do a scan. If returning zero, the scan request is given 835 * the driver, and will be valid until passed to cfg80211_scan_done(). 836 * For scan results, call cfg80211_inform_bss(); you can call this outside 837 * the scan/scan_done bracket too. 838 * 839 * @auth: Request to authenticate with the specified peer 840 * @assoc: Request to (re)associate with the specified peer 841 * @deauth: Request to deauthenticate from the specified peer 842 * @disassoc: Request to disassociate from the specified peer 843 * 844 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 845 * cfg80211_ibss_joined(), also call that function when changing BSSID due 846 * to a merge. 847 * @leave_ibss: Leave the IBSS. 848 * 849 * @set_wiphy_params: Notify that wiphy parameters have changed; 850 * @changed bitfield (see &enum wiphy_params_flags) describes which values 851 * have changed. The actual parameter values are available in 852 * struct wiphy. If returning an error, no value should be changed. 853 * 854 * @set_tx_power: set the transmit power according to the parameters 855 * @get_tx_power: store the current TX power into the dbm variable; 856 * return 0 if successful 857 * 858 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 859 * functions to adjust rfkill hw state 860 */ 861 struct cfg80211_ops { 862 int (*suspend)(struct wiphy *wiphy); 863 int (*resume)(struct wiphy *wiphy); 864 865 int (*add_virtual_intf)(struct wiphy *wiphy, char *name, 866 enum nl80211_iftype type, u32 *flags, 867 struct vif_params *params); 868 int (*del_virtual_intf)(struct wiphy *wiphy, int ifindex); 869 int (*change_virtual_intf)(struct wiphy *wiphy, int ifindex, 870 enum nl80211_iftype type, u32 *flags, 871 struct vif_params *params); 872 873 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 874 u8 key_index, const u8 *mac_addr, 875 struct key_params *params); 876 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 877 u8 key_index, const u8 *mac_addr, void *cookie, 878 void (*callback)(void *cookie, struct key_params*)); 879 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 880 u8 key_index, const u8 *mac_addr); 881 int (*set_default_key)(struct wiphy *wiphy, 882 struct net_device *netdev, 883 u8 key_index); 884 int (*set_default_mgmt_key)(struct wiphy *wiphy, 885 struct net_device *netdev, 886 u8 key_index); 887 888 int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, 889 struct beacon_parameters *info); 890 int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, 891 struct beacon_parameters *info); 892 int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); 893 894 895 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 896 u8 *mac, struct station_parameters *params); 897 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 898 u8 *mac); 899 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 900 u8 *mac, struct station_parameters *params); 901 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 902 u8 *mac, struct station_info *sinfo); 903 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 904 int idx, u8 *mac, struct station_info *sinfo); 905 906 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 907 u8 *dst, u8 *next_hop); 908 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 909 u8 *dst); 910 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 911 u8 *dst, u8 *next_hop); 912 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 913 u8 *dst, u8 *next_hop, 914 struct mpath_info *pinfo); 915 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 916 int idx, u8 *dst, u8 *next_hop, 917 struct mpath_info *pinfo); 918 int (*get_mesh_params)(struct wiphy *wiphy, 919 struct net_device *dev, 920 struct mesh_config *conf); 921 int (*set_mesh_params)(struct wiphy *wiphy, 922 struct net_device *dev, 923 const struct mesh_config *nconf, u32 mask); 924 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 925 struct bss_parameters *params); 926 927 int (*set_txq_params)(struct wiphy *wiphy, 928 struct ieee80211_txq_params *params); 929 930 int (*set_channel)(struct wiphy *wiphy, 931 struct ieee80211_channel *chan, 932 enum nl80211_channel_type channel_type); 933 934 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 935 struct cfg80211_scan_request *request); 936 937 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 938 struct cfg80211_auth_request *req); 939 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 940 struct cfg80211_assoc_request *req); 941 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 942 struct cfg80211_deauth_request *req); 943 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 944 struct cfg80211_disassoc_request *req); 945 946 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 947 struct cfg80211_ibss_params *params); 948 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 949 950 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 951 952 int (*set_tx_power)(struct wiphy *wiphy, 953 enum tx_power_setting type, int dbm); 954 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 955 956 void (*rfkill_poll)(struct wiphy *wiphy); 957 }; 958 959 /* 960 * wireless hardware and networking interfaces structures 961 * and registration/helper functions 962 */ 963 964 /** 965 * struct wiphy - wireless hardware description 966 * @idx: the wiphy index assigned to this item 967 * @class_dev: the class device representing /sys/class/ieee80211/<wiphy-name> 968 * @custom_regulatory: tells us the driver for this device 969 * has its own custom regulatory domain and cannot identify the 970 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 971 * we will disregard the first regulatory hint (when the 972 * initiator is %REGDOM_SET_BY_CORE). 973 * @strict_regulatory: tells us the driver for this device will ignore 974 * regulatory domain settings until it gets its own regulatory domain 975 * via its regulatory_hint(). After its gets its own regulatory domain 976 * it will only allow further regulatory domain settings to further 977 * enhance compliance. For example if channel 13 and 14 are disabled 978 * by this regulatory domain no user regulatory domain can enable these 979 * channels at a later time. This can be used for devices which do not 980 * have calibration information gauranteed for frequencies or settings 981 * outside of its regulatory domain. 982 * @reg_notifier: the driver's regulatory notification callback 983 * @regd: the driver's regulatory domain, if one was requested via 984 * the regulatory_hint() API. This can be used by the driver 985 * on the reg_notifier() if it chooses to ignore future 986 * regulatory domain changes caused by other drivers. 987 * @signal_type: signal type reported in &struct cfg80211_bss. 988 * @cipher_suites: supported cipher suites 989 * @n_cipher_suites: number of supported cipher suites 990 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 991 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 992 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 993 * -1 = fragmentation disabled, only odd values >= 256 used 994 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 995 */ 996 struct wiphy { 997 /* assign these fields before you register the wiphy */ 998 999 /* permanent MAC address */ 1000 u8 perm_addr[ETH_ALEN]; 1001 1002 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 1003 u16 interface_modes; 1004 1005 bool custom_regulatory; 1006 bool strict_regulatory; 1007 1008 enum cfg80211_signal_type signal_type; 1009 1010 int bss_priv_size; 1011 u8 max_scan_ssids; 1012 u16 max_scan_ie_len; 1013 1014 int n_cipher_suites; 1015 const u32 *cipher_suites; 1016 1017 u8 retry_short; 1018 u8 retry_long; 1019 u32 frag_threshold; 1020 u32 rts_threshold; 1021 1022 /* If multiple wiphys are registered and you're handed e.g. 1023 * a regular netdev with assigned ieee80211_ptr, you won't 1024 * know whether it points to a wiphy your driver has registered 1025 * or not. Assign this to something global to your driver to 1026 * help determine whether you own this wiphy or not. */ 1027 const void *privid; 1028 1029 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 1030 1031 /* Lets us get back the wiphy on the callback */ 1032 int (*reg_notifier)(struct wiphy *wiphy, 1033 struct regulatory_request *request); 1034 1035 /* fields below are read-only, assigned by cfg80211 */ 1036 1037 const struct ieee80211_regdomain *regd; 1038 1039 /* the item in /sys/class/ieee80211/ points to this, 1040 * you need use set_wiphy_dev() (see below) */ 1041 struct device dev; 1042 1043 /* dir in debugfs: ieee80211/<wiphyname> */ 1044 struct dentry *debugfsdir; 1045 1046 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 1047 }; 1048 1049 /** 1050 * wiphy_priv - return priv from wiphy 1051 * 1052 * @wiphy: the wiphy whose priv pointer to return 1053 */ 1054 static inline void *wiphy_priv(struct wiphy *wiphy) 1055 { 1056 BUG_ON(!wiphy); 1057 return &wiphy->priv; 1058 } 1059 1060 /** 1061 * set_wiphy_dev - set device pointer for wiphy 1062 * 1063 * @wiphy: The wiphy whose device to bind 1064 * @dev: The device to parent it to 1065 */ 1066 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 1067 { 1068 wiphy->dev.parent = dev; 1069 } 1070 1071 /** 1072 * wiphy_dev - get wiphy dev pointer 1073 * 1074 * @wiphy: The wiphy whose device struct to look up 1075 */ 1076 static inline struct device *wiphy_dev(struct wiphy *wiphy) 1077 { 1078 return wiphy->dev.parent; 1079 } 1080 1081 /** 1082 * wiphy_name - get wiphy name 1083 * 1084 * @wiphy: The wiphy whose name to return 1085 */ 1086 static inline const char *wiphy_name(struct wiphy *wiphy) 1087 { 1088 return dev_name(&wiphy->dev); 1089 } 1090 1091 /** 1092 * wiphy_new - create a new wiphy for use with cfg80211 1093 * 1094 * @ops: The configuration operations for this device 1095 * @sizeof_priv: The size of the private area to allocate 1096 * 1097 * Create a new wiphy and associate the given operations with it. 1098 * @sizeof_priv bytes are allocated for private use. 1099 * 1100 * The returned pointer must be assigned to each netdev's 1101 * ieee80211_ptr for proper operation. 1102 */ 1103 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 1104 1105 /** 1106 * wiphy_register - register a wiphy with cfg80211 1107 * 1108 * @wiphy: The wiphy to register. 1109 * 1110 * Returns a non-negative wiphy index or a negative error code. 1111 */ 1112 extern int wiphy_register(struct wiphy *wiphy); 1113 1114 /** 1115 * wiphy_unregister - deregister a wiphy from cfg80211 1116 * 1117 * @wiphy: The wiphy to unregister. 1118 * 1119 * After this call, no more requests can be made with this priv 1120 * pointer, but the call may sleep to wait for an outstanding 1121 * request that is being handled. 1122 */ 1123 extern void wiphy_unregister(struct wiphy *wiphy); 1124 1125 /** 1126 * wiphy_free - free wiphy 1127 * 1128 * @wiphy: The wiphy to free 1129 */ 1130 extern void wiphy_free(struct wiphy *wiphy); 1131 1132 /** 1133 * struct wireless_dev - wireless per-netdev state 1134 * 1135 * This structure must be allocated by the driver/stack 1136 * that uses the ieee80211_ptr field in struct net_device 1137 * (this is intentional so it can be allocated along with 1138 * the netdev.) 1139 * 1140 * @wiphy: pointer to hardware description 1141 * @iftype: interface type 1142 * @list: (private) Used to collect the interfaces 1143 * @netdev: (private) Used to reference back to the netdev 1144 * @current_bss: (private) Used by the internal configuration code 1145 * @bssid: (private) Used by the internal configuration code 1146 * @ssid: (private) Used by the internal configuration code 1147 * @ssid_len: (private) Used by the internal configuration code 1148 * @wext: (private) Used by the internal wireless extensions compat code 1149 * @wext_bssid: (private) Used by the internal wireless extensions compat code 1150 */ 1151 struct wireless_dev { 1152 struct wiphy *wiphy; 1153 enum nl80211_iftype iftype; 1154 1155 /* private to the generic wireless code */ 1156 struct list_head list; 1157 struct net_device *netdev; 1158 1159 /* currently used for IBSS - might be rearranged in the future */ 1160 struct cfg80211_bss *current_bss; 1161 u8 bssid[ETH_ALEN]; 1162 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1163 u8 ssid_len; 1164 1165 #ifdef CONFIG_WIRELESS_EXT 1166 /* wext data */ 1167 struct { 1168 struct cfg80211_ibss_params ibss; 1169 u8 bssid[ETH_ALEN]; 1170 s8 default_key, default_mgmt_key; 1171 } wext; 1172 #endif 1173 }; 1174 1175 /** 1176 * wdev_priv - return wiphy priv from wireless_dev 1177 * 1178 * @wdev: The wireless device whose wiphy's priv pointer to return 1179 */ 1180 static inline void *wdev_priv(struct wireless_dev *wdev) 1181 { 1182 BUG_ON(!wdev); 1183 return wiphy_priv(wdev->wiphy); 1184 } 1185 1186 /* 1187 * Utility functions 1188 */ 1189 1190 /** 1191 * ieee80211_channel_to_frequency - convert channel number to frequency 1192 */ 1193 extern int ieee80211_channel_to_frequency(int chan); 1194 1195 /** 1196 * ieee80211_frequency_to_channel - convert frequency to channel number 1197 */ 1198 extern int ieee80211_frequency_to_channel(int freq); 1199 1200 /* 1201 * Name indirection necessary because the ieee80211 code also has 1202 * a function named "ieee80211_get_channel", so if you include 1203 * cfg80211's header file you get cfg80211's version, if you try 1204 * to include both header files you'll (rightfully!) get a symbol 1205 * clash. 1206 */ 1207 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 1208 int freq); 1209 /** 1210 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 1211 */ 1212 static inline struct ieee80211_channel * 1213 ieee80211_get_channel(struct wiphy *wiphy, int freq) 1214 { 1215 return __ieee80211_get_channel(wiphy, freq); 1216 } 1217 1218 /** 1219 * ieee80211_get_response_rate - get basic rate for a given rate 1220 * 1221 * @sband: the band to look for rates in 1222 * @basic_rates: bitmap of basic rates 1223 * @bitrate: the bitrate for which to find the basic rate 1224 * 1225 * This function returns the basic rate corresponding to a given 1226 * bitrate, that is the next lower bitrate contained in the basic 1227 * rate map, which is, for this function, given as a bitmap of 1228 * indices of rates in the band's bitrate table. 1229 */ 1230 struct ieee80211_rate * 1231 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 1232 u32 basic_rates, int bitrate); 1233 1234 /* 1235 * Radiotap parsing functions -- for controlled injection support 1236 * 1237 * Implemented in net/wireless/radiotap.c 1238 * Documentation in Documentation/networking/radiotap-headers.txt 1239 */ 1240 1241 /** 1242 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 1243 * @rtheader: pointer to the radiotap header we are walking through 1244 * @max_length: length of radiotap header in cpu byte ordering 1245 * @this_arg_index: IEEE80211_RADIOTAP_... index of current arg 1246 * @this_arg: pointer to current radiotap arg 1247 * @arg_index: internal next argument index 1248 * @arg: internal next argument pointer 1249 * @next_bitmap: internal pointer to next present u32 1250 * @bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 1251 */ 1252 1253 struct ieee80211_radiotap_iterator { 1254 struct ieee80211_radiotap_header *rtheader; 1255 int max_length; 1256 int this_arg_index; 1257 u8 *this_arg; 1258 1259 int arg_index; 1260 u8 *arg; 1261 __le32 *next_bitmap; 1262 u32 bitmap_shifter; 1263 }; 1264 1265 extern int ieee80211_radiotap_iterator_init( 1266 struct ieee80211_radiotap_iterator *iterator, 1267 struct ieee80211_radiotap_header *radiotap_header, 1268 int max_length); 1269 1270 extern int ieee80211_radiotap_iterator_next( 1271 struct ieee80211_radiotap_iterator *iterator); 1272 1273 extern const unsigned char rfc1042_header[6]; 1274 extern const unsigned char bridge_tunnel_header[6]; 1275 1276 /** 1277 * ieee80211_get_hdrlen_from_skb - get header length from data 1278 * 1279 * Given an skb with a raw 802.11 header at the data pointer this function 1280 * returns the 802.11 header length in bytes (not including encryption 1281 * headers). If the data in the sk_buff is too short to contain a valid 802.11 1282 * header the function returns 0. 1283 * 1284 * @skb: the frame 1285 */ 1286 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 1287 1288 /** 1289 * ieee80211_hdrlen - get header length in bytes from frame control 1290 * @fc: frame control field in little-endian format 1291 */ 1292 unsigned int ieee80211_hdrlen(__le16 fc); 1293 1294 /** 1295 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 1296 * @skb: the 802.11 data frame 1297 * @addr: the device MAC address 1298 * @iftype: the virtual interface type 1299 */ 1300 int ieee80211_data_to_8023(struct sk_buff *skb, u8 *addr, 1301 enum nl80211_iftype iftype); 1302 1303 /** 1304 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 1305 * @skb: the 802.3 frame 1306 * @addr: the device MAC address 1307 * @iftype: the virtual interface type 1308 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 1309 * @qos: build 802.11 QoS data frame 1310 */ 1311 int ieee80211_data_from_8023(struct sk_buff *skb, u8 *addr, 1312 enum nl80211_iftype iftype, u8 *bssid, bool qos); 1313 1314 /** 1315 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 1316 * @skb: the data frame 1317 */ 1318 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 1319 1320 /* 1321 * Regulatory helper functions for wiphys 1322 */ 1323 1324 /** 1325 * regulatory_hint - driver hint to the wireless core a regulatory domain 1326 * @wiphy: the wireless device giving the hint (used only for reporting 1327 * conflicts) 1328 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 1329 * should be in. If @rd is set this should be NULL. Note that if you 1330 * set this to NULL you should still set rd->alpha2 to some accepted 1331 * alpha2. 1332 * 1333 * Wireless drivers can use this function to hint to the wireless core 1334 * what it believes should be the current regulatory domain by 1335 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 1336 * domain should be in or by providing a completely build regulatory domain. 1337 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 1338 * for a regulatory domain structure for the respective country. 1339 * 1340 * The wiphy must have been registered to cfg80211 prior to this call. 1341 * For cfg80211 drivers this means you must first use wiphy_register(), 1342 * for mac80211 drivers you must first use ieee80211_register_hw(). 1343 * 1344 * Drivers should check the return value, its possible you can get 1345 * an -ENOMEM. 1346 */ 1347 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 1348 1349 /** 1350 * regulatory_hint_11d - hints a country IE as a regulatory domain 1351 * @wiphy: the wireless device giving the hint (used only for reporting 1352 * conflicts) 1353 * @country_ie: pointer to the country IE 1354 * @country_ie_len: length of the country IE 1355 * 1356 * We will intersect the rd with the what CRDA tells us should apply 1357 * for the alpha2 this country IE belongs to, this prevents APs from 1358 * sending us incorrect or outdated information against a country. 1359 */ 1360 extern void regulatory_hint_11d(struct wiphy *wiphy, 1361 u8 *country_ie, 1362 u8 country_ie_len); 1363 /** 1364 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 1365 * @wiphy: the wireless device we want to process the regulatory domain on 1366 * @regd: the custom regulatory domain to use for this wiphy 1367 * 1368 * Drivers can sometimes have custom regulatory domains which do not apply 1369 * to a specific country. Drivers can use this to apply such custom regulatory 1370 * domains. This routine must be called prior to wiphy registration. The 1371 * custom regulatory domain will be trusted completely and as such previous 1372 * default channel settings will be disregarded. If no rule is found for a 1373 * channel on the regulatory domain the channel will be disabled. 1374 */ 1375 extern void wiphy_apply_custom_regulatory( 1376 struct wiphy *wiphy, 1377 const struct ieee80211_regdomain *regd); 1378 1379 /** 1380 * freq_reg_info - get regulatory information for the given frequency 1381 * @wiphy: the wiphy for which we want to process this rule for 1382 * @center_freq: Frequency in KHz for which we want regulatory information for 1383 * @desired_bw_khz: the desired max bandwidth you want to use per 1384 * channel. Note that this is still 20 MHz if you want to use HT40 1385 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 1386 * If set to 0 we'll assume you want the standard 20 MHz. 1387 * @reg_rule: the regulatory rule which we have for this frequency 1388 * 1389 * Use this function to get the regulatory rule for a specific frequency on 1390 * a given wireless device. If the device has a specific regulatory domain 1391 * it wants to follow we respect that unless a country IE has been received 1392 * and processed already. 1393 * 1394 * Returns 0 if it was able to find a valid regulatory rule which does 1395 * apply to the given center_freq otherwise it returns non-zero. It will 1396 * also return -ERANGE if we determine the given center_freq does not even have 1397 * a regulatory rule for a frequency range in the center_freq's band. See 1398 * freq_in_rule_band() for our current definition of a band -- this is purely 1399 * subjective and right now its 802.11 specific. 1400 */ 1401 extern int freq_reg_info(struct wiphy *wiphy, 1402 u32 center_freq, 1403 u32 desired_bw_khz, 1404 const struct ieee80211_reg_rule **reg_rule); 1405 1406 /* 1407 * Temporary wext handlers & helper functions 1408 * 1409 * In the future cfg80211 will simply assign the entire wext handler 1410 * structure to netdevs it manages, but we're not there yet. 1411 */ 1412 int cfg80211_wext_giwname(struct net_device *dev, 1413 struct iw_request_info *info, 1414 char *name, char *extra); 1415 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 1416 u32 *mode, char *extra); 1417 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 1418 u32 *mode, char *extra); 1419 int cfg80211_wext_siwscan(struct net_device *dev, 1420 struct iw_request_info *info, 1421 union iwreq_data *wrqu, char *extra); 1422 int cfg80211_wext_giwscan(struct net_device *dev, 1423 struct iw_request_info *info, 1424 struct iw_point *data, char *extra); 1425 int cfg80211_wext_siwmlme(struct net_device *dev, 1426 struct iw_request_info *info, 1427 struct iw_point *data, char *extra); 1428 int cfg80211_wext_giwrange(struct net_device *dev, 1429 struct iw_request_info *info, 1430 struct iw_point *data, char *extra); 1431 int cfg80211_ibss_wext_siwfreq(struct net_device *dev, 1432 struct iw_request_info *info, 1433 struct iw_freq *freq, char *extra); 1434 int cfg80211_ibss_wext_giwfreq(struct net_device *dev, 1435 struct iw_request_info *info, 1436 struct iw_freq *freq, char *extra); 1437 int cfg80211_ibss_wext_siwessid(struct net_device *dev, 1438 struct iw_request_info *info, 1439 struct iw_point *data, char *ssid); 1440 int cfg80211_ibss_wext_giwessid(struct net_device *dev, 1441 struct iw_request_info *info, 1442 struct iw_point *data, char *ssid); 1443 int cfg80211_ibss_wext_siwap(struct net_device *dev, 1444 struct iw_request_info *info, 1445 struct sockaddr *ap_addr, char *extra); 1446 int cfg80211_ibss_wext_giwap(struct net_device *dev, 1447 struct iw_request_info *info, 1448 struct sockaddr *ap_addr, char *extra); 1449 1450 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy, 1451 struct iw_freq *freq); 1452 1453 int cfg80211_wext_siwrts(struct net_device *dev, 1454 struct iw_request_info *info, 1455 struct iw_param *rts, char *extra); 1456 int cfg80211_wext_giwrts(struct net_device *dev, 1457 struct iw_request_info *info, 1458 struct iw_param *rts, char *extra); 1459 int cfg80211_wext_siwfrag(struct net_device *dev, 1460 struct iw_request_info *info, 1461 struct iw_param *frag, char *extra); 1462 int cfg80211_wext_giwfrag(struct net_device *dev, 1463 struct iw_request_info *info, 1464 struct iw_param *frag, char *extra); 1465 int cfg80211_wext_siwretry(struct net_device *dev, 1466 struct iw_request_info *info, 1467 struct iw_param *retry, char *extra); 1468 int cfg80211_wext_giwretry(struct net_device *dev, 1469 struct iw_request_info *info, 1470 struct iw_param *retry, char *extra); 1471 int cfg80211_wext_siwencodeext(struct net_device *dev, 1472 struct iw_request_info *info, 1473 struct iw_point *erq, char *extra); 1474 int cfg80211_wext_siwencode(struct net_device *dev, 1475 struct iw_request_info *info, 1476 struct iw_point *erq, char *keybuf); 1477 int cfg80211_wext_giwencode(struct net_device *dev, 1478 struct iw_request_info *info, 1479 struct iw_point *erq, char *keybuf); 1480 int cfg80211_wext_siwtxpower(struct net_device *dev, 1481 struct iw_request_info *info, 1482 union iwreq_data *data, char *keybuf); 1483 int cfg80211_wext_giwtxpower(struct net_device *dev, 1484 struct iw_request_info *info, 1485 union iwreq_data *data, char *keybuf); 1486 1487 /* 1488 * callbacks for asynchronous cfg80211 methods, notification 1489 * functions and BSS handling helpers 1490 */ 1491 1492 /** 1493 * cfg80211_scan_done - notify that scan finished 1494 * 1495 * @request: the corresponding scan request 1496 * @aborted: set to true if the scan was aborted for any reason, 1497 * userspace will be notified of that 1498 */ 1499 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 1500 1501 /** 1502 * cfg80211_inform_bss - inform cfg80211 of a new BSS 1503 * 1504 * @wiphy: the wiphy reporting the BSS 1505 * @bss: the found BSS 1506 * @signal: the signal strength, type depends on the wiphy's signal_type 1507 * @gfp: context flags 1508 * 1509 * This informs cfg80211 that BSS information was found and 1510 * the BSS should be updated/added. 1511 */ 1512 struct cfg80211_bss* 1513 cfg80211_inform_bss_frame(struct wiphy *wiphy, 1514 struct ieee80211_channel *channel, 1515 struct ieee80211_mgmt *mgmt, size_t len, 1516 s32 signal, gfp_t gfp); 1517 1518 struct cfg80211_bss* 1519 cfg80211_inform_bss(struct wiphy *wiphy, 1520 struct ieee80211_channel *channel, 1521 const u8 *bssid, 1522 u64 timestamp, u16 capability, u16 beacon_interval, 1523 const u8 *ie, size_t ielen, 1524 s32 signal, gfp_t gfp); 1525 1526 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 1527 struct ieee80211_channel *channel, 1528 const u8 *bssid, 1529 const u8 *ssid, size_t ssid_len, 1530 u16 capa_mask, u16 capa_val); 1531 static inline struct cfg80211_bss * 1532 cfg80211_get_ibss(struct wiphy *wiphy, 1533 struct ieee80211_channel *channel, 1534 const u8 *ssid, size_t ssid_len) 1535 { 1536 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 1537 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 1538 } 1539 1540 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 1541 struct ieee80211_channel *channel, 1542 const u8 *meshid, size_t meshidlen, 1543 const u8 *meshcfg); 1544 void cfg80211_put_bss(struct cfg80211_bss *bss); 1545 1546 /** 1547 * cfg80211_unlink_bss - unlink BSS from internal data structures 1548 * @wiphy: the wiphy 1549 * @bss: the bss to remove 1550 * 1551 * This function removes the given BSS from the internal data structures 1552 * thereby making it no longer show up in scan results etc. Use this 1553 * function when you detect a BSS is gone. Normally BSSes will also time 1554 * out, so it is not necessary to use this function at all. 1555 */ 1556 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 1557 1558 /** 1559 * cfg80211_send_rx_auth - notification of processed authentication 1560 * @dev: network device 1561 * @buf: authentication frame (header + body) 1562 * @len: length of the frame data 1563 * 1564 * This function is called whenever an authentication has been processed in 1565 * station mode. The driver is required to call either this function or 1566 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 1567 * call. 1568 */ 1569 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 1570 1571 /** 1572 * cfg80211_send_auth_timeout - notification of timed out authentication 1573 * @dev: network device 1574 * @addr: The MAC address of the device with which the authentication timed out 1575 */ 1576 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 1577 1578 /** 1579 * cfg80211_send_rx_assoc - notification of processed association 1580 * @dev: network device 1581 * @buf: (re)association response frame (header + body) 1582 * @len: length of the frame data 1583 * 1584 * This function is called whenever a (re)association response has been 1585 * processed in station mode. The driver is required to call either this 1586 * function or cfg80211_send_assoc_timeout() to indicate the result of 1587 * cfg80211_ops::assoc() call. 1588 */ 1589 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); 1590 1591 /** 1592 * cfg80211_send_assoc_timeout - notification of timed out association 1593 * @dev: network device 1594 * @addr: The MAC address of the device with which the association timed out 1595 */ 1596 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 1597 1598 /** 1599 * cfg80211_send_deauth - notification of processed deauthentication 1600 * @dev: network device 1601 * @buf: deauthentication frame (header + body) 1602 * @len: length of the frame data 1603 * 1604 * This function is called whenever deauthentication has been processed in 1605 * station mode. This includes both received deauthentication frames and 1606 * locally generated ones. 1607 */ 1608 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 1609 1610 /** 1611 * cfg80211_send_disassoc - notification of processed disassociation 1612 * @dev: network device 1613 * @buf: disassociation response frame (header + body) 1614 * @len: length of the frame data 1615 * 1616 * This function is called whenever disassociation has been processed in 1617 * station mode. This includes both received disassociation frames and locally 1618 * generated ones. 1619 */ 1620 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 1621 1622 /** 1623 * cfg80211_hold_bss - exclude bss from expiration 1624 * @bss: bss which should not expire 1625 * 1626 * In a case when the BSS is not updated but it shouldn't expire this 1627 * function can be used to mark the BSS to be excluded from expiration. 1628 */ 1629 void cfg80211_hold_bss(struct cfg80211_bss *bss); 1630 1631 /** 1632 * cfg80211_unhold_bss - remove expiration exception from the BSS 1633 * @bss: bss which can expire again 1634 * 1635 * This function marks the BSS to be expirable again. 1636 */ 1637 void cfg80211_unhold_bss(struct cfg80211_bss *bss); 1638 1639 /** 1640 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 1641 * @dev: network device 1642 * @addr: The source MAC address of the frame 1643 * @key_type: The key type that the received frame used 1644 * @key_id: Key identifier (0..3) 1645 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 1646 * 1647 * This function is called whenever the local MAC detects a MIC failure in a 1648 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 1649 * primitive. 1650 */ 1651 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 1652 enum nl80211_key_type key_type, int key_id, 1653 const u8 *tsc); 1654 1655 /** 1656 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 1657 * 1658 * @dev: network device 1659 * @bssid: the BSSID of the IBSS joined 1660 * @gfp: allocation flags 1661 * 1662 * This function notifies cfg80211 that the device joined an IBSS or 1663 * switched to a different BSSID. Before this function can be called, 1664 * either a beacon has to have been received from the IBSS, or one of 1665 * the cfg80211_inform_bss{,_frame} functions must have been called 1666 * with the locally generated beacon -- this guarantees that there is 1667 * always a scan result for this IBSS. cfg80211 will handle the rest. 1668 */ 1669 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 1670 1671 /** 1672 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 1673 * @wiphy: the wiphy 1674 * @blocked: block status 1675 */ 1676 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 1677 1678 /** 1679 * wiphy_rfkill_start_polling - start polling rfkill 1680 * @wiphy: the wiphy 1681 */ 1682 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 1683 1684 /** 1685 * wiphy_rfkill_stop_polling - stop polling rfkill 1686 * @wiphy: the wiphy 1687 */ 1688 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 1689 1690 #endif /* __NET_CFG80211_H */ 1691