1 #ifndef __NET_CFG80211_H 2 #define __NET_CFG80211_H 3 /* 4 * 802.11 device and configuration interface 5 * 6 * Copyright 2006-2010 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 * DOC: Introduction 30 * 31 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 32 * userspace and drivers, and offers some utility functionality associated 33 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 34 * by all modern wireless drivers in Linux, so that they offer a consistent 35 * API through nl80211. For backward compatibility, cfg80211 also offers 36 * wireless extensions to userspace, but hides them from drivers completely. 37 * 38 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 39 * use restrictions. 40 */ 41 42 43 /** 44 * DOC: Device registration 45 * 46 * In order for a driver to use cfg80211, it must register the hardware device 47 * with cfg80211. This happens through a number of hardware capability structs 48 * described below. 49 * 50 * The fundamental structure for each device is the 'wiphy', of which each 51 * instance describes a physical wireless device connected to the system. Each 52 * such wiphy can have zero, one, or many virtual interfaces associated with 53 * it, which need to be identified as such by pointing the network interface's 54 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 55 * the wireless part of the interface, normally this struct is embedded in the 56 * network interface's private data area. Drivers can optionally allow creating 57 * or destroying virtual interfaces on the fly, but without at least one or the 58 * ability to create some the wireless device isn't useful. 59 * 60 * Each wiphy structure contains device capability information, and also has 61 * a pointer to the various operations the driver offers. The definitions and 62 * structures here describe these capabilities in detail. 63 */ 64 65 /* 66 * wireless hardware capability structures 67 */ 68 69 /** 70 * enum ieee80211_band - supported frequency bands 71 * 72 * The bands are assigned this way because the supported 73 * bitrates differ in these bands. 74 * 75 * @IEEE80211_BAND_2GHZ: 2.4GHz ISM band 76 * @IEEE80211_BAND_5GHZ: around 5GHz band (4.9-5.7) 77 * @IEEE80211_NUM_BANDS: number of defined bands 78 */ 79 enum ieee80211_band { 80 IEEE80211_BAND_2GHZ = NL80211_BAND_2GHZ, 81 IEEE80211_BAND_5GHZ = NL80211_BAND_5GHZ, 82 83 /* keep last */ 84 IEEE80211_NUM_BANDS 85 }; 86 87 /** 88 * enum ieee80211_channel_flags - channel flags 89 * 90 * Channel flags set by the regulatory control code. 91 * 92 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 93 * @IEEE80211_CHAN_PASSIVE_SCAN: Only passive scanning is permitted 94 * on this channel. 95 * @IEEE80211_CHAN_NO_IBSS: IBSS is not allowed on this channel. 96 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 97 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 98 * is not permitted. 99 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 100 * is not permitted. 101 */ 102 enum ieee80211_channel_flags { 103 IEEE80211_CHAN_DISABLED = 1<<0, 104 IEEE80211_CHAN_PASSIVE_SCAN = 1<<1, 105 IEEE80211_CHAN_NO_IBSS = 1<<2, 106 IEEE80211_CHAN_RADAR = 1<<3, 107 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 108 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 109 }; 110 111 #define IEEE80211_CHAN_NO_HT40 \ 112 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 113 114 /** 115 * struct ieee80211_channel - channel definition 116 * 117 * This structure describes a single channel for use 118 * with cfg80211. 119 * 120 * @center_freq: center frequency in MHz 121 * @hw_value: hardware-specific value for the channel 122 * @flags: channel flags from &enum ieee80211_channel_flags. 123 * @orig_flags: channel flags at registration time, used by regulatory 124 * code to support devices with additional restrictions 125 * @band: band this channel belongs to. 126 * @max_antenna_gain: maximum antenna gain in dBi 127 * @max_power: maximum transmission power (in dBm) 128 * @beacon_found: helper to regulatory code to indicate when a beacon 129 * has been found on this channel. Use regulatory_hint_found_beacon() 130 * to enable this, this is useful only on 5 GHz band. 131 * @orig_mag: internal use 132 * @orig_mpwr: internal use 133 */ 134 struct ieee80211_channel { 135 enum ieee80211_band band; 136 u16 center_freq; 137 u16 hw_value; 138 u32 flags; 139 int max_antenna_gain; 140 int max_power; 141 bool beacon_found; 142 u32 orig_flags; 143 int orig_mag, orig_mpwr; 144 }; 145 146 /** 147 * enum ieee80211_rate_flags - rate flags 148 * 149 * Hardware/specification flags for rates. These are structured 150 * in a way that allows using the same bitrate structure for 151 * different bands/PHY modes. 152 * 153 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 154 * preamble on this bitrate; only relevant in 2.4GHz band and 155 * with CCK rates. 156 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 157 * when used with 802.11a (on the 5 GHz band); filled by the 158 * core code when registering the wiphy. 159 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 160 * when used with 802.11b (on the 2.4 GHz band); filled by the 161 * core code when registering the wiphy. 162 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 163 * when used with 802.11g (on the 2.4 GHz band); filled by the 164 * core code when registering the wiphy. 165 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 166 */ 167 enum ieee80211_rate_flags { 168 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 169 IEEE80211_RATE_MANDATORY_A = 1<<1, 170 IEEE80211_RATE_MANDATORY_B = 1<<2, 171 IEEE80211_RATE_MANDATORY_G = 1<<3, 172 IEEE80211_RATE_ERP_G = 1<<4, 173 }; 174 175 /** 176 * struct ieee80211_rate - bitrate definition 177 * 178 * This structure describes a bitrate that an 802.11 PHY can 179 * operate with. The two values @hw_value and @hw_value_short 180 * are only for driver use when pointers to this structure are 181 * passed around. 182 * 183 * @flags: rate-specific flags 184 * @bitrate: bitrate in units of 100 Kbps 185 * @hw_value: driver/hardware value for this rate 186 * @hw_value_short: driver/hardware value for this rate when 187 * short preamble is used 188 */ 189 struct ieee80211_rate { 190 u32 flags; 191 u16 bitrate; 192 u16 hw_value, hw_value_short; 193 }; 194 195 /** 196 * struct ieee80211_sta_ht_cap - STA's HT capabilities 197 * 198 * This structure describes most essential parameters needed 199 * to describe 802.11n HT capabilities for an STA. 200 * 201 * @ht_supported: is HT supported by the STA 202 * @cap: HT capabilities map as described in 802.11n spec 203 * @ampdu_factor: Maximum A-MPDU length factor 204 * @ampdu_density: Minimum A-MPDU spacing 205 * @mcs: Supported MCS rates 206 */ 207 struct ieee80211_sta_ht_cap { 208 u16 cap; /* use IEEE80211_HT_CAP_ */ 209 bool ht_supported; 210 u8 ampdu_factor; 211 u8 ampdu_density; 212 struct ieee80211_mcs_info mcs; 213 }; 214 215 /** 216 * struct ieee80211_supported_band - frequency band definition 217 * 218 * This structure describes a frequency band a wiphy 219 * is able to operate in. 220 * 221 * @channels: Array of channels the hardware can operate in 222 * in this band. 223 * @band: the band this structure represents 224 * @n_channels: Number of channels in @channels 225 * @bitrates: Array of bitrates the hardware can operate with 226 * in this band. Must be sorted to give a valid "supported 227 * rates" IE, i.e. CCK rates first, then OFDM. 228 * @n_bitrates: Number of bitrates in @bitrates 229 * @ht_cap: HT capabilities in this band 230 */ 231 struct ieee80211_supported_band { 232 struct ieee80211_channel *channels; 233 struct ieee80211_rate *bitrates; 234 enum ieee80211_band band; 235 int n_channels; 236 int n_bitrates; 237 struct ieee80211_sta_ht_cap ht_cap; 238 }; 239 240 /* 241 * Wireless hardware/device configuration structures and methods 242 */ 243 244 /** 245 * DOC: Actions and configuration 246 * 247 * Each wireless device and each virtual interface offer a set of configuration 248 * operations and other actions that are invoked by userspace. Each of these 249 * actions is described in the operations structure, and the parameters these 250 * operations use are described separately. 251 * 252 * Additionally, some operations are asynchronous and expect to get status 253 * information via some functions that drivers need to call. 254 * 255 * Scanning and BSS list handling with its associated functionality is described 256 * in a separate chapter. 257 */ 258 259 /** 260 * struct vif_params - describes virtual interface parameters 261 * @mesh_id: mesh ID to use 262 * @mesh_id_len: length of the mesh ID 263 * @use_4addr: use 4-address frames 264 */ 265 struct vif_params { 266 u8 *mesh_id; 267 int mesh_id_len; 268 int use_4addr; 269 }; 270 271 /** 272 * struct key_params - key information 273 * 274 * Information about a key 275 * 276 * @key: key material 277 * @key_len: length of key material 278 * @cipher: cipher suite selector 279 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 280 * with the get_key() callback, must be in little endian, 281 * length given by @seq_len. 282 * @seq_len: length of @seq. 283 */ 284 struct key_params { 285 u8 *key; 286 u8 *seq; 287 int key_len; 288 int seq_len; 289 u32 cipher; 290 }; 291 292 /** 293 * enum survey_info_flags - survey information flags 294 * 295 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 296 * @SURVEY_INFO_IN_USE: channel is currently being used 297 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in 298 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in 299 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in 300 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in 301 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in 302 * 303 * Used by the driver to indicate which info in &struct survey_info 304 * it has filled in during the get_survey(). 305 */ 306 enum survey_info_flags { 307 SURVEY_INFO_NOISE_DBM = 1<<0, 308 SURVEY_INFO_IN_USE = 1<<1, 309 SURVEY_INFO_CHANNEL_TIME = 1<<2, 310 SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, 311 SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, 312 SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, 313 SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, 314 }; 315 316 /** 317 * struct survey_info - channel survey response 318 * 319 * @channel: the channel this survey record reports, mandatory 320 * @filled: bitflag of flags from &enum survey_info_flags 321 * @noise: channel noise in dBm. This and all following fields are 322 * optional 323 * @channel_time: amount of time in ms the radio spent on the channel 324 * @channel_time_busy: amount of time the primary channel was sensed busy 325 * @channel_time_ext_busy: amount of time the extension channel was sensed busy 326 * @channel_time_rx: amount of time the radio spent receiving data 327 * @channel_time_tx: amount of time the radio spent transmitting data 328 * 329 * Used by dump_survey() to report back per-channel survey information. 330 * 331 * This structure can later be expanded with things like 332 * channel duty cycle etc. 333 */ 334 struct survey_info { 335 struct ieee80211_channel *channel; 336 u64 channel_time; 337 u64 channel_time_busy; 338 u64 channel_time_ext_busy; 339 u64 channel_time_rx; 340 u64 channel_time_tx; 341 u32 filled; 342 s8 noise; 343 }; 344 345 /** 346 * struct beacon_parameters - beacon parameters 347 * 348 * Used to configure the beacon for an interface. 349 * 350 * @head: head portion of beacon (before TIM IE) 351 * or %NULL if not changed 352 * @tail: tail portion of beacon (after TIM IE) 353 * or %NULL if not changed 354 * @interval: beacon interval or zero if not changed 355 * @dtim_period: DTIM period or zero if not changed 356 * @head_len: length of @head 357 * @tail_len: length of @tail 358 */ 359 struct beacon_parameters { 360 u8 *head, *tail; 361 int interval, dtim_period; 362 int head_len, tail_len; 363 }; 364 365 /** 366 * enum plink_action - actions to perform in mesh peers 367 * 368 * @PLINK_ACTION_INVALID: action 0 is reserved 369 * @PLINK_ACTION_OPEN: start mesh peer link establishment 370 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer 371 */ 372 enum plink_actions { 373 PLINK_ACTION_INVALID, 374 PLINK_ACTION_OPEN, 375 PLINK_ACTION_BLOCK, 376 }; 377 378 /** 379 * struct station_parameters - station parameters 380 * 381 * Used to change and create a new station. 382 * 383 * @vlan: vlan interface station should belong to 384 * @supported_rates: supported rates in IEEE 802.11 format 385 * (or NULL for no change) 386 * @supported_rates_len: number of supported rates 387 * @sta_flags_mask: station flags that changed 388 * (bitmask of BIT(NL80211_STA_FLAG_...)) 389 * @sta_flags_set: station flags values 390 * (bitmask of BIT(NL80211_STA_FLAG_...)) 391 * @listen_interval: listen interval or -1 for no change 392 * @aid: AID or zero for no change 393 * @plink_action: plink action to take 394 * @ht_capa: HT capabilities of station 395 */ 396 struct station_parameters { 397 u8 *supported_rates; 398 struct net_device *vlan; 399 u32 sta_flags_mask, sta_flags_set; 400 int listen_interval; 401 u16 aid; 402 u8 supported_rates_len; 403 u8 plink_action; 404 struct ieee80211_ht_cap *ht_capa; 405 }; 406 407 /** 408 * enum station_info_flags - station information flags 409 * 410 * Used by the driver to indicate which info in &struct station_info 411 * it has filled in during get_station() or dump_station(). 412 * 413 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 414 * @STATION_INFO_RX_BYTES: @rx_bytes filled 415 * @STATION_INFO_TX_BYTES: @tx_bytes filled 416 * @STATION_INFO_LLID: @llid filled 417 * @STATION_INFO_PLID: @plid filled 418 * @STATION_INFO_PLINK_STATE: @plink_state filled 419 * @STATION_INFO_SIGNAL: @signal filled 420 * @STATION_INFO_TX_BITRATE: @tx_bitrate fields are filled 421 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 422 * @STATION_INFO_RX_PACKETS: @rx_packets filled 423 * @STATION_INFO_TX_PACKETS: @tx_packets filled 424 * @STATION_INFO_TX_RETRIES: @tx_retries filled 425 * @STATION_INFO_TX_FAILED: @tx_failed filled 426 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled 427 */ 428 enum station_info_flags { 429 STATION_INFO_INACTIVE_TIME = 1<<0, 430 STATION_INFO_RX_BYTES = 1<<1, 431 STATION_INFO_TX_BYTES = 1<<2, 432 STATION_INFO_LLID = 1<<3, 433 STATION_INFO_PLID = 1<<4, 434 STATION_INFO_PLINK_STATE = 1<<5, 435 STATION_INFO_SIGNAL = 1<<6, 436 STATION_INFO_TX_BITRATE = 1<<7, 437 STATION_INFO_RX_PACKETS = 1<<8, 438 STATION_INFO_TX_PACKETS = 1<<9, 439 STATION_INFO_TX_RETRIES = 1<<10, 440 STATION_INFO_TX_FAILED = 1<<11, 441 STATION_INFO_RX_DROP_MISC = 1<<12, 442 }; 443 444 /** 445 * enum station_info_rate_flags - bitrate info flags 446 * 447 * Used by the driver to indicate the specific rate transmission 448 * type for 802.11n transmissions. 449 * 450 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled 451 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission 452 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 453 */ 454 enum rate_info_flags { 455 RATE_INFO_FLAGS_MCS = 1<<0, 456 RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, 457 RATE_INFO_FLAGS_SHORT_GI = 1<<2, 458 }; 459 460 /** 461 * struct rate_info - bitrate information 462 * 463 * Information about a receiving or transmitting bitrate 464 * 465 * @flags: bitflag of flags from &enum rate_info_flags 466 * @mcs: mcs index if struct describes a 802.11n bitrate 467 * @legacy: bitrate in 100kbit/s for 802.11abg 468 */ 469 struct rate_info { 470 u8 flags; 471 u8 mcs; 472 u16 legacy; 473 }; 474 475 /** 476 * struct station_info - station information 477 * 478 * Station information filled by driver for get_station() and dump_station. 479 * 480 * @filled: bitflag of flags from &enum station_info_flags 481 * @inactive_time: time since last station activity (tx/rx) in milliseconds 482 * @rx_bytes: bytes received from this station 483 * @tx_bytes: bytes transmitted to this station 484 * @llid: mesh local link id 485 * @plid: mesh peer link id 486 * @plink_state: mesh peer link state 487 * @signal: signal strength of last received packet in dBm 488 * @txrate: current unicast bitrate to this station 489 * @rx_packets: packets received from this station 490 * @tx_packets: packets transmitted to this station 491 * @tx_retries: cumulative retry counts 492 * @tx_failed: number of failed transmissions (retries exceeded, no ACK) 493 * @rx_dropped_misc: Dropped for un-specified reason. 494 * @generation: generation number for nl80211 dumps. 495 * This number should increase every time the list of stations 496 * changes, i.e. when a station is added or removed, so that 497 * userspace can tell whether it got a consistent snapshot. 498 */ 499 struct station_info { 500 u32 filled; 501 u32 inactive_time; 502 u32 rx_bytes; 503 u32 tx_bytes; 504 u16 llid; 505 u16 plid; 506 u8 plink_state; 507 s8 signal; 508 struct rate_info txrate; 509 u32 rx_packets; 510 u32 tx_packets; 511 u32 tx_retries; 512 u32 tx_failed; 513 u32 rx_dropped_misc; 514 515 int generation; 516 }; 517 518 /** 519 * enum monitor_flags - monitor flags 520 * 521 * Monitor interface configuration flags. Note that these must be the bits 522 * according to the nl80211 flags. 523 * 524 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 525 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 526 * @MONITOR_FLAG_CONTROL: pass control frames 527 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 528 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 529 */ 530 enum monitor_flags { 531 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 532 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 533 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 534 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 535 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 536 }; 537 538 /** 539 * enum mpath_info_flags - mesh path information flags 540 * 541 * Used by the driver to indicate which info in &struct mpath_info it has filled 542 * in during get_station() or dump_station(). 543 * 544 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 545 * @MPATH_INFO_SN: @sn filled 546 * @MPATH_INFO_METRIC: @metric filled 547 * @MPATH_INFO_EXPTIME: @exptime filled 548 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 549 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 550 * @MPATH_INFO_FLAGS: @flags filled 551 */ 552 enum mpath_info_flags { 553 MPATH_INFO_FRAME_QLEN = BIT(0), 554 MPATH_INFO_SN = BIT(1), 555 MPATH_INFO_METRIC = BIT(2), 556 MPATH_INFO_EXPTIME = BIT(3), 557 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 558 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 559 MPATH_INFO_FLAGS = BIT(6), 560 }; 561 562 /** 563 * struct mpath_info - mesh path information 564 * 565 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 566 * 567 * @filled: bitfield of flags from &enum mpath_info_flags 568 * @frame_qlen: number of queued frames for this destination 569 * @sn: target sequence number 570 * @metric: metric (cost) of this mesh path 571 * @exptime: expiration time for the mesh path from now, in msecs 572 * @flags: mesh path flags 573 * @discovery_timeout: total mesh path discovery timeout, in msecs 574 * @discovery_retries: mesh path discovery retries 575 * @generation: generation number for nl80211 dumps. 576 * This number should increase every time the list of mesh paths 577 * changes, i.e. when a station is added or removed, so that 578 * userspace can tell whether it got a consistent snapshot. 579 */ 580 struct mpath_info { 581 u32 filled; 582 u32 frame_qlen; 583 u32 sn; 584 u32 metric; 585 u32 exptime; 586 u32 discovery_timeout; 587 u8 discovery_retries; 588 u8 flags; 589 590 int generation; 591 }; 592 593 /** 594 * struct bss_parameters - BSS parameters 595 * 596 * Used to change BSS parameters (mainly for AP mode). 597 * 598 * @use_cts_prot: Whether to use CTS protection 599 * (0 = no, 1 = yes, -1 = do not change) 600 * @use_short_preamble: Whether the use of short preambles is allowed 601 * (0 = no, 1 = yes, -1 = do not change) 602 * @use_short_slot_time: Whether the use of short slot time is allowed 603 * (0 = no, 1 = yes, -1 = do not change) 604 * @basic_rates: basic rates in IEEE 802.11 format 605 * (or NULL for no change) 606 * @basic_rates_len: number of basic rates 607 * @ap_isolate: do not forward packets between connected stations 608 */ 609 struct bss_parameters { 610 int use_cts_prot; 611 int use_short_preamble; 612 int use_short_slot_time; 613 u8 *basic_rates; 614 u8 basic_rates_len; 615 int ap_isolate; 616 }; 617 618 struct mesh_config { 619 /* Timeouts in ms */ 620 /* Mesh plink management parameters */ 621 u16 dot11MeshRetryTimeout; 622 u16 dot11MeshConfirmTimeout; 623 u16 dot11MeshHoldingTimeout; 624 u16 dot11MeshMaxPeerLinks; 625 u8 dot11MeshMaxRetries; 626 u8 dot11MeshTTL; 627 bool auto_open_plinks; 628 /* HWMP parameters */ 629 u8 dot11MeshHWMPmaxPREQretries; 630 u32 path_refresh_time; 631 u16 min_discovery_timeout; 632 u32 dot11MeshHWMPactivePathTimeout; 633 u16 dot11MeshHWMPpreqMinInterval; 634 u16 dot11MeshHWMPnetDiameterTraversalTime; 635 u8 dot11MeshHWMPRootMode; 636 }; 637 638 /** 639 * struct ieee80211_txq_params - TX queue parameters 640 * @queue: TX queue identifier (NL80211_TXQ_Q_*) 641 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 642 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 643 * 1..32767] 644 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 645 * 1..32767] 646 * @aifs: Arbitration interframe space [0..255] 647 */ 648 struct ieee80211_txq_params { 649 enum nl80211_txq_q queue; 650 u16 txop; 651 u16 cwmin; 652 u16 cwmax; 653 u8 aifs; 654 }; 655 656 /* from net/wireless.h */ 657 struct wiphy; 658 659 /** 660 * DOC: Scanning and BSS list handling 661 * 662 * The scanning process itself is fairly simple, but cfg80211 offers quite 663 * a bit of helper functionality. To start a scan, the scan operation will 664 * be invoked with a scan definition. This scan definition contains the 665 * channels to scan, and the SSIDs to send probe requests for (including the 666 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 667 * probe. Additionally, a scan request may contain extra information elements 668 * that should be added to the probe request. The IEs are guaranteed to be 669 * well-formed, and will not exceed the maximum length the driver advertised 670 * in the wiphy structure. 671 * 672 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 673 * it is responsible for maintaining the BSS list; the driver should not 674 * maintain a list itself. For this notification, various functions exist. 675 * 676 * Since drivers do not maintain a BSS list, there are also a number of 677 * functions to search for a BSS and obtain information about it from the 678 * BSS structure cfg80211 maintains. The BSS list is also made available 679 * to userspace. 680 */ 681 682 /** 683 * struct cfg80211_ssid - SSID description 684 * @ssid: the SSID 685 * @ssid_len: length of the ssid 686 */ 687 struct cfg80211_ssid { 688 u8 ssid[IEEE80211_MAX_SSID_LEN]; 689 u8 ssid_len; 690 }; 691 692 /** 693 * struct cfg80211_scan_request - scan request description 694 * 695 * @ssids: SSIDs to scan for (active scan only) 696 * @n_ssids: number of SSIDs 697 * @channels: channels to scan on. 698 * @n_channels: total number of channels to scan 699 * @ie: optional information element(s) to add into Probe Request or %NULL 700 * @ie_len: length of ie in octets 701 * @wiphy: the wiphy this was for 702 * @dev: the interface 703 * @aborted: (internal) scan request was notified as aborted 704 */ 705 struct cfg80211_scan_request { 706 struct cfg80211_ssid *ssids; 707 int n_ssids; 708 u32 n_channels; 709 const u8 *ie; 710 size_t ie_len; 711 712 /* internal */ 713 struct wiphy *wiphy; 714 struct net_device *dev; 715 bool aborted; 716 717 /* keep last */ 718 struct ieee80211_channel *channels[0]; 719 }; 720 721 /** 722 * enum cfg80211_signal_type - signal type 723 * 724 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 725 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 726 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 727 */ 728 enum cfg80211_signal_type { 729 CFG80211_SIGNAL_TYPE_NONE, 730 CFG80211_SIGNAL_TYPE_MBM, 731 CFG80211_SIGNAL_TYPE_UNSPEC, 732 }; 733 734 /** 735 * struct cfg80211_bss - BSS description 736 * 737 * This structure describes a BSS (which may also be a mesh network) 738 * for use in scan results and similar. 739 * 740 * @channel: channel this BSS is on 741 * @bssid: BSSID of the BSS 742 * @tsf: timestamp of last received update 743 * @beacon_interval: the beacon interval as from the frame 744 * @capability: the capability field in host byte order 745 * @information_elements: the information elements (Note that there 746 * is no guarantee that these are well-formed!); this is a pointer to 747 * either the beacon_ies or proberesp_ies depending on whether Probe 748 * Response frame has been received 749 * @len_information_elements: total length of the information elements 750 * @beacon_ies: the information elements from the last Beacon frame 751 * @len_beacon_ies: total length of the beacon_ies 752 * @proberesp_ies: the information elements from the last Probe Response frame 753 * @len_proberesp_ies: total length of the proberesp_ies 754 * @signal: signal strength value (type depends on the wiphy's signal_type) 755 * @free_priv: function pointer to free private data 756 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 757 */ 758 struct cfg80211_bss { 759 struct ieee80211_channel *channel; 760 761 u8 bssid[ETH_ALEN]; 762 u64 tsf; 763 u16 beacon_interval; 764 u16 capability; 765 u8 *information_elements; 766 size_t len_information_elements; 767 u8 *beacon_ies; 768 size_t len_beacon_ies; 769 u8 *proberesp_ies; 770 size_t len_proberesp_ies; 771 772 s32 signal; 773 774 void (*free_priv)(struct cfg80211_bss *bss); 775 u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); 776 }; 777 778 /** 779 * ieee80211_bss_get_ie - find IE with given ID 780 * @bss: the bss to search 781 * @ie: the IE ID 782 * Returns %NULL if not found. 783 */ 784 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 785 786 787 /** 788 * struct cfg80211_crypto_settings - Crypto settings 789 * @wpa_versions: indicates which, if any, WPA versions are enabled 790 * (from enum nl80211_wpa_versions) 791 * @cipher_group: group key cipher suite (or 0 if unset) 792 * @n_ciphers_pairwise: number of AP supported unicast ciphers 793 * @ciphers_pairwise: unicast key cipher suites 794 * @n_akm_suites: number of AKM suites 795 * @akm_suites: AKM suites 796 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 797 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 798 * required to assume that the port is unauthorized until authorized by 799 * user space. Otherwise, port is marked authorized by default. 800 * @control_port_ethertype: the control port protocol that should be 801 * allowed through even on unauthorized ports 802 * @control_port_no_encrypt: TRUE to prevent encryption of control port 803 * protocol frames. 804 */ 805 struct cfg80211_crypto_settings { 806 u32 wpa_versions; 807 u32 cipher_group; 808 int n_ciphers_pairwise; 809 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 810 int n_akm_suites; 811 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 812 bool control_port; 813 __be16 control_port_ethertype; 814 bool control_port_no_encrypt; 815 }; 816 817 /** 818 * struct cfg80211_auth_request - Authentication request data 819 * 820 * This structure provides information needed to complete IEEE 802.11 821 * authentication. 822 * 823 * @bss: The BSS to authenticate with. 824 * @auth_type: Authentication type (algorithm) 825 * @ie: Extra IEs to add to Authentication frame or %NULL 826 * @ie_len: Length of ie buffer in octets 827 * @key_len: length of WEP key for shared key authentication 828 * @key_idx: index of WEP key for shared key authentication 829 * @key: WEP key for shared key authentication 830 * @local_state_change: This is a request for a local state only, i.e., no 831 * Authentication frame is to be transmitted and authentication state is 832 * to be changed without having to wait for a response from the peer STA 833 * (AP). 834 */ 835 struct cfg80211_auth_request { 836 struct cfg80211_bss *bss; 837 const u8 *ie; 838 size_t ie_len; 839 enum nl80211_auth_type auth_type; 840 const u8 *key; 841 u8 key_len, key_idx; 842 bool local_state_change; 843 }; 844 845 /** 846 * struct cfg80211_assoc_request - (Re)Association request data 847 * 848 * This structure provides information needed to complete IEEE 802.11 849 * (re)association. 850 * @bss: The BSS to associate with. 851 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 852 * @ie_len: Length of ie buffer in octets 853 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 854 * @crypto: crypto settings 855 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 856 */ 857 struct cfg80211_assoc_request { 858 struct cfg80211_bss *bss; 859 const u8 *ie, *prev_bssid; 860 size_t ie_len; 861 struct cfg80211_crypto_settings crypto; 862 bool use_mfp; 863 }; 864 865 /** 866 * struct cfg80211_deauth_request - Deauthentication request data 867 * 868 * This structure provides information needed to complete IEEE 802.11 869 * deauthentication. 870 * 871 * @bss: the BSS to deauthenticate from 872 * @ie: Extra IEs to add to Deauthentication frame or %NULL 873 * @ie_len: Length of ie buffer in octets 874 * @reason_code: The reason code for the deauthentication 875 * @local_state_change: This is a request for a local state only, i.e., no 876 * Deauthentication frame is to be transmitted. 877 */ 878 struct cfg80211_deauth_request { 879 struct cfg80211_bss *bss; 880 const u8 *ie; 881 size_t ie_len; 882 u16 reason_code; 883 bool local_state_change; 884 }; 885 886 /** 887 * struct cfg80211_disassoc_request - Disassociation request data 888 * 889 * This structure provides information needed to complete IEEE 802.11 890 * disassocation. 891 * 892 * @bss: the BSS to disassociate from 893 * @ie: Extra IEs to add to Disassociation frame or %NULL 894 * @ie_len: Length of ie buffer in octets 895 * @reason_code: The reason code for the disassociation 896 * @local_state_change: This is a request for a local state only, i.e., no 897 * Disassociation frame is to be transmitted. 898 */ 899 struct cfg80211_disassoc_request { 900 struct cfg80211_bss *bss; 901 const u8 *ie; 902 size_t ie_len; 903 u16 reason_code; 904 bool local_state_change; 905 }; 906 907 /** 908 * struct cfg80211_ibss_params - IBSS parameters 909 * 910 * This structure defines the IBSS parameters for the join_ibss() 911 * method. 912 * 913 * @ssid: The SSID, will always be non-null. 914 * @ssid_len: The length of the SSID, will always be non-zero. 915 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 916 * search for IBSSs with a different BSSID. 917 * @channel: The channel to use if no IBSS can be found to join. 918 * @channel_fixed: The channel should be fixed -- do not search for 919 * IBSSs to join on other channels. 920 * @ie: information element(s) to include in the beacon 921 * @ie_len: length of that 922 * @beacon_interval: beacon interval to use 923 * @privacy: this is a protected network, keys will be configured 924 * after joining 925 * @basic_rates: bitmap of basic rates to use when creating the IBSS 926 */ 927 struct cfg80211_ibss_params { 928 u8 *ssid; 929 u8 *bssid; 930 struct ieee80211_channel *channel; 931 u8 *ie; 932 u8 ssid_len, ie_len; 933 u16 beacon_interval; 934 u32 basic_rates; 935 bool channel_fixed; 936 bool privacy; 937 }; 938 939 /** 940 * struct cfg80211_connect_params - Connection parameters 941 * 942 * This structure provides information needed to complete IEEE 802.11 943 * authentication and association. 944 * 945 * @channel: The channel to use or %NULL if not specified (auto-select based 946 * on scan results) 947 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 948 * results) 949 * @ssid: SSID 950 * @ssid_len: Length of ssid in octets 951 * @auth_type: Authentication type (algorithm) 952 * @ie: IEs for association request 953 * @ie_len: Length of assoc_ie in octets 954 * @privacy: indicates whether privacy-enabled APs should be used 955 * @crypto: crypto settings 956 * @key_len: length of WEP key for shared key authentication 957 * @key_idx: index of WEP key for shared key authentication 958 * @key: WEP key for shared key authentication 959 */ 960 struct cfg80211_connect_params { 961 struct ieee80211_channel *channel; 962 u8 *bssid; 963 u8 *ssid; 964 size_t ssid_len; 965 enum nl80211_auth_type auth_type; 966 u8 *ie; 967 size_t ie_len; 968 bool privacy; 969 struct cfg80211_crypto_settings crypto; 970 const u8 *key; 971 u8 key_len, key_idx; 972 }; 973 974 /** 975 * enum wiphy_params_flags - set_wiphy_params bitfield values 976 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 977 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 978 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 979 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 980 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 981 */ 982 enum wiphy_params_flags { 983 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 984 WIPHY_PARAM_RETRY_LONG = 1 << 1, 985 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 986 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 987 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 988 }; 989 990 /* 991 * cfg80211_bitrate_mask - masks for bitrate control 992 */ 993 struct cfg80211_bitrate_mask { 994 struct { 995 u32 legacy; 996 /* TODO: add support for masking MCS rates; e.g.: */ 997 /* u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; */ 998 } control[IEEE80211_NUM_BANDS]; 999 }; 1000 /** 1001 * struct cfg80211_pmksa - PMK Security Association 1002 * 1003 * This structure is passed to the set/del_pmksa() method for PMKSA 1004 * caching. 1005 * 1006 * @bssid: The AP's BSSID. 1007 * @pmkid: The PMK material itself. 1008 */ 1009 struct cfg80211_pmksa { 1010 u8 *bssid; 1011 u8 *pmkid; 1012 }; 1013 1014 /** 1015 * struct cfg80211_ops - backend description for wireless configuration 1016 * 1017 * This struct is registered by fullmac card drivers and/or wireless stacks 1018 * in order to handle configuration requests on their interfaces. 1019 * 1020 * All callbacks except where otherwise noted should return 0 1021 * on success or a negative error code. 1022 * 1023 * All operations are currently invoked under rtnl for consistency with the 1024 * wireless extensions but this is subject to reevaluation as soon as this 1025 * code is used more widely and we have a first user without wext. 1026 * 1027 * @suspend: wiphy device needs to be suspended 1028 * @resume: wiphy device needs to be resumed 1029 * 1030 * @add_virtual_intf: create a new virtual interface with the given name, 1031 * must set the struct wireless_dev's iftype. Beware: You must create 1032 * the new netdev in the wiphy's network namespace! 1033 * 1034 * @del_virtual_intf: remove the virtual interface determined by ifindex. 1035 * 1036 * @change_virtual_intf: change type/configuration of virtual interface, 1037 * keep the struct wireless_dev's iftype updated. 1038 * 1039 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 1040 * when adding a group key. 1041 * 1042 * @get_key: get information about the key with the given parameters. 1043 * @mac_addr will be %NULL when requesting information for a group 1044 * key. All pointers given to the @callback function need not be valid 1045 * after it returns. This function should return an error if it is 1046 * not possible to retrieve the key, -ENOENT if it doesn't exist. 1047 * 1048 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 1049 * and @key_index, return -ENOENT if the key doesn't exist. 1050 * 1051 * @set_default_key: set the default key on an interface 1052 * 1053 * @set_default_mgmt_key: set the default management frame key on an interface 1054 * 1055 * @add_beacon: Add a beacon with given parameters, @head, @interval 1056 * and @dtim_period will be valid, @tail is optional. 1057 * @set_beacon: Change the beacon parameters for an access point mode 1058 * interface. This should reject the call when no beacon has been 1059 * configured. 1060 * @del_beacon: Remove beacon configuration and stop sending the beacon. 1061 * 1062 * @add_station: Add a new station. 1063 * @del_station: Remove a station; @mac may be NULL to remove all stations. 1064 * @change_station: Modify a given station. 1065 * @get_station: get station information for the station identified by @mac 1066 * @dump_station: dump station callback -- resume dump at index @idx 1067 * 1068 * @add_mpath: add a fixed mesh path 1069 * @del_mpath: delete a given mesh path 1070 * @change_mpath: change a given mesh path 1071 * @get_mpath: get a mesh path for the given parameters 1072 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 1073 * 1074 * @get_mesh_params: Put the current mesh parameters into *params 1075 * 1076 * @set_mesh_params: Set mesh parameters. 1077 * The mask is a bitfield which tells us which parameters to 1078 * set, and which to leave alone. 1079 * 1080 * @change_bss: Modify parameters for a given BSS. 1081 * 1082 * @set_txq_params: Set TX queue parameters 1083 * 1084 * @set_channel: Set channel for a given wireless interface. Some devices 1085 * may support multi-channel operation (by channel hopping) so cfg80211 1086 * doesn't verify much. Note, however, that the passed netdev may be 1087 * %NULL as well if the user requested changing the channel for the 1088 * device itself, or for a monitor interface. 1089 * 1090 * @scan: Request to do a scan. If returning zero, the scan request is given 1091 * the driver, and will be valid until passed to cfg80211_scan_done(). 1092 * For scan results, call cfg80211_inform_bss(); you can call this outside 1093 * the scan/scan_done bracket too. 1094 * 1095 * @auth: Request to authenticate with the specified peer 1096 * @assoc: Request to (re)associate with the specified peer 1097 * @deauth: Request to deauthenticate from the specified peer 1098 * @disassoc: Request to disassociate from the specified peer 1099 * 1100 * @connect: Connect to the ESS with the specified parameters. When connected, 1101 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 1102 * If the connection fails for some reason, call cfg80211_connect_result() 1103 * with the status from the AP. 1104 * @disconnect: Disconnect from the BSS/ESS. 1105 * 1106 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 1107 * cfg80211_ibss_joined(), also call that function when changing BSSID due 1108 * to a merge. 1109 * @leave_ibss: Leave the IBSS. 1110 * 1111 * @set_wiphy_params: Notify that wiphy parameters have changed; 1112 * @changed bitfield (see &enum wiphy_params_flags) describes which values 1113 * have changed. The actual parameter values are available in 1114 * struct wiphy. If returning an error, no value should be changed. 1115 * 1116 * @set_tx_power: set the transmit power according to the parameters 1117 * @get_tx_power: store the current TX power into the dbm variable; 1118 * return 0 if successful 1119 * 1120 * @set_wds_peer: set the WDS peer for a WDS interface 1121 * 1122 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 1123 * functions to adjust rfkill hw state 1124 * 1125 * @dump_survey: get site survey information. 1126 * 1127 * @remain_on_channel: Request the driver to remain awake on the specified 1128 * channel for the specified duration to complete an off-channel 1129 * operation (e.g., public action frame exchange). When the driver is 1130 * ready on the requested channel, it must indicate this with an event 1131 * notification by calling cfg80211_ready_on_channel(). 1132 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 1133 * This allows the operation to be terminated prior to timeout based on 1134 * the duration value. 1135 * @mgmt_tx: Transmit a management frame 1136 * 1137 * @testmode_cmd: run a test mode command 1138 * 1139 * @set_bitrate_mask: set the bitrate mask configuration 1140 * 1141 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 1142 * devices running firmwares capable of generating the (re) association 1143 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 1144 * @del_pmksa: Delete a cached PMKID. 1145 * @flush_pmksa: Flush all cached PMKIDs. 1146 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 1147 * allows the driver to adjust the dynamic ps timeout value. 1148 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 1149 * 1150 * @mgmt_frame_register: Notify driver that a management frame type was 1151 * registered. Note that this callback may not sleep, and cannot run 1152 * concurrently with itself. 1153 */ 1154 struct cfg80211_ops { 1155 int (*suspend)(struct wiphy *wiphy); 1156 int (*resume)(struct wiphy *wiphy); 1157 1158 int (*add_virtual_intf)(struct wiphy *wiphy, char *name, 1159 enum nl80211_iftype type, u32 *flags, 1160 struct vif_params *params); 1161 int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev); 1162 int (*change_virtual_intf)(struct wiphy *wiphy, 1163 struct net_device *dev, 1164 enum nl80211_iftype type, u32 *flags, 1165 struct vif_params *params); 1166 1167 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 1168 u8 key_index, bool pairwise, const u8 *mac_addr, 1169 struct key_params *params); 1170 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 1171 u8 key_index, bool pairwise, const u8 *mac_addr, 1172 void *cookie, 1173 void (*callback)(void *cookie, struct key_params*)); 1174 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 1175 u8 key_index, bool pairwise, const u8 *mac_addr); 1176 int (*set_default_key)(struct wiphy *wiphy, 1177 struct net_device *netdev, 1178 u8 key_index); 1179 int (*set_default_mgmt_key)(struct wiphy *wiphy, 1180 struct net_device *netdev, 1181 u8 key_index); 1182 1183 int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, 1184 struct beacon_parameters *info); 1185 int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, 1186 struct beacon_parameters *info); 1187 int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); 1188 1189 1190 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 1191 u8 *mac, struct station_parameters *params); 1192 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 1193 u8 *mac); 1194 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 1195 u8 *mac, struct station_parameters *params); 1196 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 1197 u8 *mac, struct station_info *sinfo); 1198 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 1199 int idx, u8 *mac, struct station_info *sinfo); 1200 1201 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 1202 u8 *dst, u8 *next_hop); 1203 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 1204 u8 *dst); 1205 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 1206 u8 *dst, u8 *next_hop); 1207 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 1208 u8 *dst, u8 *next_hop, 1209 struct mpath_info *pinfo); 1210 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 1211 int idx, u8 *dst, u8 *next_hop, 1212 struct mpath_info *pinfo); 1213 int (*get_mesh_params)(struct wiphy *wiphy, 1214 struct net_device *dev, 1215 struct mesh_config *conf); 1216 int (*set_mesh_params)(struct wiphy *wiphy, 1217 struct net_device *dev, 1218 const struct mesh_config *nconf, u32 mask); 1219 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 1220 struct bss_parameters *params); 1221 1222 int (*set_txq_params)(struct wiphy *wiphy, 1223 struct ieee80211_txq_params *params); 1224 1225 int (*set_channel)(struct wiphy *wiphy, struct net_device *dev, 1226 struct ieee80211_channel *chan, 1227 enum nl80211_channel_type channel_type); 1228 1229 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 1230 struct cfg80211_scan_request *request); 1231 1232 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 1233 struct cfg80211_auth_request *req); 1234 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 1235 struct cfg80211_assoc_request *req); 1236 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 1237 struct cfg80211_deauth_request *req, 1238 void *cookie); 1239 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 1240 struct cfg80211_disassoc_request *req, 1241 void *cookie); 1242 1243 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 1244 struct cfg80211_connect_params *sme); 1245 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 1246 u16 reason_code); 1247 1248 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 1249 struct cfg80211_ibss_params *params); 1250 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 1251 1252 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 1253 1254 int (*set_tx_power)(struct wiphy *wiphy, 1255 enum nl80211_tx_power_setting type, int mbm); 1256 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 1257 1258 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 1259 const u8 *addr); 1260 1261 void (*rfkill_poll)(struct wiphy *wiphy); 1262 1263 #ifdef CONFIG_NL80211_TESTMODE 1264 int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len); 1265 #endif 1266 1267 int (*set_bitrate_mask)(struct wiphy *wiphy, 1268 struct net_device *dev, 1269 const u8 *peer, 1270 const struct cfg80211_bitrate_mask *mask); 1271 1272 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 1273 int idx, struct survey_info *info); 1274 1275 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1276 struct cfg80211_pmksa *pmksa); 1277 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1278 struct cfg80211_pmksa *pmksa); 1279 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 1280 1281 int (*remain_on_channel)(struct wiphy *wiphy, 1282 struct net_device *dev, 1283 struct ieee80211_channel *chan, 1284 enum nl80211_channel_type channel_type, 1285 unsigned int duration, 1286 u64 *cookie); 1287 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 1288 struct net_device *dev, 1289 u64 cookie); 1290 1291 int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, 1292 struct ieee80211_channel *chan, 1293 enum nl80211_channel_type channel_type, 1294 bool channel_type_valid, 1295 const u8 *buf, size_t len, u64 *cookie); 1296 1297 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1298 bool enabled, int timeout); 1299 1300 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 1301 struct net_device *dev, 1302 s32 rssi_thold, u32 rssi_hyst); 1303 1304 void (*mgmt_frame_register)(struct wiphy *wiphy, 1305 struct net_device *dev, 1306 u16 frame_type, bool reg); 1307 }; 1308 1309 /* 1310 * wireless hardware and networking interfaces structures 1311 * and registration/helper functions 1312 */ 1313 1314 /** 1315 * enum wiphy_flags - wiphy capability flags 1316 * 1317 * @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device 1318 * has its own custom regulatory domain and cannot identify the 1319 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 1320 * we will disregard the first regulatory hint (when the 1321 * initiator is %REGDOM_SET_BY_CORE). 1322 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will 1323 * ignore regulatory domain settings until it gets its own regulatory 1324 * domain via its regulatory_hint(). After its gets its own regulatory 1325 * domain it will only allow further regulatory domain settings to 1326 * further enhance compliance. For example if channel 13 and 14 are 1327 * disabled by this regulatory domain no user regulatory domain can 1328 * enable these channels at a later time. This can be used for devices 1329 * which do not have calibration information gauranteed for frequencies 1330 * or settings outside of its regulatory domain. 1331 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure 1332 * that passive scan flags and beaconing flags may not be lifted by 1333 * cfg80211 due to regulatory beacon hints. For more information on beacon 1334 * hints read the documenation for regulatory_hint_found_beacon() 1335 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 1336 * wiphy at all 1337 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 1338 * by default -- this flag will be set depending on the kernel's default 1339 * on wiphy_new(), but can be changed by the driver if it has a good 1340 * reason to override the default 1341 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 1342 * on a VLAN interface) 1343 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 1344 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 1345 * control port protocol ethertype. The device also honours the 1346 * control_port_no_encrypt flag. 1347 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 1348 */ 1349 enum wiphy_flags { 1350 WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), 1351 WIPHY_FLAG_STRICT_REGULATORY = BIT(1), 1352 WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), 1353 WIPHY_FLAG_NETNS_OK = BIT(3), 1354 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 1355 WIPHY_FLAG_4ADDR_AP = BIT(5), 1356 WIPHY_FLAG_4ADDR_STATION = BIT(6), 1357 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 1358 WIPHY_FLAG_IBSS_RSN = BIT(7), 1359 }; 1360 1361 struct mac_address { 1362 u8 addr[ETH_ALEN]; 1363 }; 1364 1365 struct ieee80211_txrx_stypes { 1366 u16 tx, rx; 1367 }; 1368 1369 /** 1370 * struct wiphy - wireless hardware description 1371 * @reg_notifier: the driver's regulatory notification callback 1372 * @regd: the driver's regulatory domain, if one was requested via 1373 * the regulatory_hint() API. This can be used by the driver 1374 * on the reg_notifier() if it chooses to ignore future 1375 * regulatory domain changes caused by other drivers. 1376 * @signal_type: signal type reported in &struct cfg80211_bss. 1377 * @cipher_suites: supported cipher suites 1378 * @n_cipher_suites: number of supported cipher suites 1379 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 1380 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 1381 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 1382 * -1 = fragmentation disabled, only odd values >= 256 used 1383 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 1384 * @_net: the network namespace this wiphy currently lives in 1385 * @perm_addr: permanent MAC address of this device 1386 * @addr_mask: If the device supports multiple MAC addresses by masking, 1387 * set this to a mask with variable bits set to 1, e.g. if the last 1388 * four bits are variable then set it to 00:...:00:0f. The actual 1389 * variable bits shall be determined by the interfaces added, with 1390 * interfaces not matching the mask being rejected to be brought up. 1391 * @n_addresses: number of addresses in @addresses. 1392 * @addresses: If the device has more than one address, set this pointer 1393 * to a list of addresses (6 bytes each). The first one will be used 1394 * by default for perm_addr. In this case, the mask should be set to 1395 * all-zeroes. In this case it is assumed that the device can handle 1396 * the same number of arbitrary MAC addresses. 1397 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 1398 * automatically on wiphy renames 1399 * @dev: (virtual) struct device for this wiphy 1400 * @wext: wireless extension handlers 1401 * @priv: driver private data (sized according to wiphy_new() parameter) 1402 * @interface_modes: bitmask of interfaces types valid for this wiphy, 1403 * must be set by driver 1404 * @flags: wiphy flags, see &enum wiphy_flags 1405 * @bss_priv_size: each BSS struct has private data allocated with it, 1406 * this variable determines its size 1407 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 1408 * any given scan 1409 * @max_scan_ie_len: maximum length of user-controlled IEs device can 1410 * add to probe request frames transmitted during a scan, must not 1411 * include fixed IEs like supported rates 1412 * @coverage_class: current coverage class 1413 * @fw_version: firmware version for ethtool reporting 1414 * @hw_version: hardware version for ethtool reporting 1415 * @max_num_pmkids: maximum number of PMKIDs supported by device 1416 * @privid: a pointer that drivers can use to identify if an arbitrary 1417 * wiphy is theirs, e.g. in global notifiers 1418 * @bands: information about bands/channels supported by this device 1419 * 1420 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 1421 * transmitted through nl80211, points to an array indexed by interface 1422 * type 1423 */ 1424 struct wiphy { 1425 /* assign these fields before you register the wiphy */ 1426 1427 /* permanent MAC address(es) */ 1428 u8 perm_addr[ETH_ALEN]; 1429 u8 addr_mask[ETH_ALEN]; 1430 1431 struct mac_address *addresses; 1432 1433 const struct ieee80211_txrx_stypes *mgmt_stypes; 1434 1435 u16 n_addresses; 1436 1437 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 1438 u16 interface_modes; 1439 1440 u32 flags; 1441 1442 enum cfg80211_signal_type signal_type; 1443 1444 int bss_priv_size; 1445 u8 max_scan_ssids; 1446 u16 max_scan_ie_len; 1447 1448 int n_cipher_suites; 1449 const u32 *cipher_suites; 1450 1451 u8 retry_short; 1452 u8 retry_long; 1453 u32 frag_threshold; 1454 u32 rts_threshold; 1455 u8 coverage_class; 1456 1457 char fw_version[ETHTOOL_BUSINFO_LEN]; 1458 u32 hw_version; 1459 1460 u8 max_num_pmkids; 1461 1462 /* If multiple wiphys are registered and you're handed e.g. 1463 * a regular netdev with assigned ieee80211_ptr, you won't 1464 * know whether it points to a wiphy your driver has registered 1465 * or not. Assign this to something global to your driver to 1466 * help determine whether you own this wiphy or not. */ 1467 const void *privid; 1468 1469 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 1470 1471 /* Lets us get back the wiphy on the callback */ 1472 int (*reg_notifier)(struct wiphy *wiphy, 1473 struct regulatory_request *request); 1474 1475 /* fields below are read-only, assigned by cfg80211 */ 1476 1477 const struct ieee80211_regdomain *regd; 1478 1479 /* the item in /sys/class/ieee80211/ points to this, 1480 * you need use set_wiphy_dev() (see below) */ 1481 struct device dev; 1482 1483 /* dir in debugfs: ieee80211/<wiphyname> */ 1484 struct dentry *debugfsdir; 1485 1486 #ifdef CONFIG_NET_NS 1487 /* the network namespace this phy lives in currently */ 1488 struct net *_net; 1489 #endif 1490 1491 #ifdef CONFIG_CFG80211_WEXT 1492 const struct iw_handler_def *wext; 1493 #endif 1494 1495 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 1496 }; 1497 1498 static inline struct net *wiphy_net(struct wiphy *wiphy) 1499 { 1500 return read_pnet(&wiphy->_net); 1501 } 1502 1503 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 1504 { 1505 write_pnet(&wiphy->_net, net); 1506 } 1507 1508 /** 1509 * wiphy_priv - return priv from wiphy 1510 * 1511 * @wiphy: the wiphy whose priv pointer to return 1512 */ 1513 static inline void *wiphy_priv(struct wiphy *wiphy) 1514 { 1515 BUG_ON(!wiphy); 1516 return &wiphy->priv; 1517 } 1518 1519 /** 1520 * priv_to_wiphy - return the wiphy containing the priv 1521 * 1522 * @priv: a pointer previously returned by wiphy_priv 1523 */ 1524 static inline struct wiphy *priv_to_wiphy(void *priv) 1525 { 1526 BUG_ON(!priv); 1527 return container_of(priv, struct wiphy, priv); 1528 } 1529 1530 /** 1531 * set_wiphy_dev - set device pointer for wiphy 1532 * 1533 * @wiphy: The wiphy whose device to bind 1534 * @dev: The device to parent it to 1535 */ 1536 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 1537 { 1538 wiphy->dev.parent = dev; 1539 } 1540 1541 /** 1542 * wiphy_dev - get wiphy dev pointer 1543 * 1544 * @wiphy: The wiphy whose device struct to look up 1545 */ 1546 static inline struct device *wiphy_dev(struct wiphy *wiphy) 1547 { 1548 return wiphy->dev.parent; 1549 } 1550 1551 /** 1552 * wiphy_name - get wiphy name 1553 * 1554 * @wiphy: The wiphy whose name to return 1555 */ 1556 static inline const char *wiphy_name(const struct wiphy *wiphy) 1557 { 1558 return dev_name(&wiphy->dev); 1559 } 1560 1561 /** 1562 * wiphy_new - create a new wiphy for use with cfg80211 1563 * 1564 * @ops: The configuration operations for this device 1565 * @sizeof_priv: The size of the private area to allocate 1566 * 1567 * Create a new wiphy and associate the given operations with it. 1568 * @sizeof_priv bytes are allocated for private use. 1569 * 1570 * The returned pointer must be assigned to each netdev's 1571 * ieee80211_ptr for proper operation. 1572 */ 1573 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 1574 1575 /** 1576 * wiphy_register - register a wiphy with cfg80211 1577 * 1578 * @wiphy: The wiphy to register. 1579 * 1580 * Returns a non-negative wiphy index or a negative error code. 1581 */ 1582 extern int wiphy_register(struct wiphy *wiphy); 1583 1584 /** 1585 * wiphy_unregister - deregister a wiphy from cfg80211 1586 * 1587 * @wiphy: The wiphy to unregister. 1588 * 1589 * After this call, no more requests can be made with this priv 1590 * pointer, but the call may sleep to wait for an outstanding 1591 * request that is being handled. 1592 */ 1593 extern void wiphy_unregister(struct wiphy *wiphy); 1594 1595 /** 1596 * wiphy_free - free wiphy 1597 * 1598 * @wiphy: The wiphy to free 1599 */ 1600 extern void wiphy_free(struct wiphy *wiphy); 1601 1602 /* internal structs */ 1603 struct cfg80211_conn; 1604 struct cfg80211_internal_bss; 1605 struct cfg80211_cached_keys; 1606 1607 #define MAX_AUTH_BSSES 4 1608 1609 /** 1610 * struct wireless_dev - wireless per-netdev state 1611 * 1612 * This structure must be allocated by the driver/stack 1613 * that uses the ieee80211_ptr field in struct net_device 1614 * (this is intentional so it can be allocated along with 1615 * the netdev.) 1616 * 1617 * @wiphy: pointer to hardware description 1618 * @iftype: interface type 1619 * @list: (private) Used to collect the interfaces 1620 * @netdev: (private) Used to reference back to the netdev 1621 * @current_bss: (private) Used by the internal configuration code 1622 * @channel: (private) Used by the internal configuration code to track 1623 * user-set AP, monitor and WDS channels for wireless extensions 1624 * @bssid: (private) Used by the internal configuration code 1625 * @ssid: (private) Used by the internal configuration code 1626 * @ssid_len: (private) Used by the internal configuration code 1627 * @wext: (private) Used by the internal wireless extensions compat code 1628 * @use_4addr: indicates 4addr mode is used on this interface, must be 1629 * set by driver (if supported) on add_interface BEFORE registering the 1630 * netdev and may otherwise be used by driver read-only, will be update 1631 * by cfg80211 on change_interface 1632 * @mgmt_registrations: list of registrations for management frames 1633 * @mgmt_registrations_lock: lock for the list 1634 * @mtx: mutex used to lock data in this struct 1635 * @cleanup_work: work struct used for cleanup that can't be done directly 1636 */ 1637 struct wireless_dev { 1638 struct wiphy *wiphy; 1639 enum nl80211_iftype iftype; 1640 1641 /* the remainder of this struct should be private to cfg80211 */ 1642 struct list_head list; 1643 struct net_device *netdev; 1644 1645 struct list_head mgmt_registrations; 1646 spinlock_t mgmt_registrations_lock; 1647 1648 struct mutex mtx; 1649 1650 struct work_struct cleanup_work; 1651 1652 bool use_4addr; 1653 1654 /* currently used for IBSS and SME - might be rearranged later */ 1655 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1656 u8 ssid_len; 1657 enum { 1658 CFG80211_SME_IDLE, 1659 CFG80211_SME_CONNECTING, 1660 CFG80211_SME_CONNECTED, 1661 } sme_state; 1662 struct cfg80211_conn *conn; 1663 struct cfg80211_cached_keys *connect_keys; 1664 1665 struct list_head event_list; 1666 spinlock_t event_lock; 1667 1668 struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES]; 1669 struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES]; 1670 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 1671 struct ieee80211_channel *channel; 1672 1673 bool ps; 1674 int ps_timeout; 1675 1676 #ifdef CONFIG_CFG80211_WEXT 1677 /* wext data */ 1678 struct { 1679 struct cfg80211_ibss_params ibss; 1680 struct cfg80211_connect_params connect; 1681 struct cfg80211_cached_keys *keys; 1682 u8 *ie; 1683 size_t ie_len; 1684 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 1685 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1686 s8 default_key, default_mgmt_key; 1687 bool prev_bssid_valid; 1688 } wext; 1689 #endif 1690 }; 1691 1692 /** 1693 * wdev_priv - return wiphy priv from wireless_dev 1694 * 1695 * @wdev: The wireless device whose wiphy's priv pointer to return 1696 */ 1697 static inline void *wdev_priv(struct wireless_dev *wdev) 1698 { 1699 BUG_ON(!wdev); 1700 return wiphy_priv(wdev->wiphy); 1701 } 1702 1703 /** 1704 * DOC: Utility functions 1705 * 1706 * cfg80211 offers a number of utility functions that can be useful. 1707 */ 1708 1709 /** 1710 * ieee80211_channel_to_frequency - convert channel number to frequency 1711 * @chan: channel number 1712 */ 1713 extern int ieee80211_channel_to_frequency(int chan); 1714 1715 /** 1716 * ieee80211_frequency_to_channel - convert frequency to channel number 1717 * @freq: center frequency 1718 */ 1719 extern int ieee80211_frequency_to_channel(int freq); 1720 1721 /* 1722 * Name indirection necessary because the ieee80211 code also has 1723 * a function named "ieee80211_get_channel", so if you include 1724 * cfg80211's header file you get cfg80211's version, if you try 1725 * to include both header files you'll (rightfully!) get a symbol 1726 * clash. 1727 */ 1728 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 1729 int freq); 1730 /** 1731 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 1732 * @wiphy: the struct wiphy to get the channel for 1733 * @freq: the center frequency of the channel 1734 */ 1735 static inline struct ieee80211_channel * 1736 ieee80211_get_channel(struct wiphy *wiphy, int freq) 1737 { 1738 return __ieee80211_get_channel(wiphy, freq); 1739 } 1740 1741 /** 1742 * ieee80211_get_response_rate - get basic rate for a given rate 1743 * 1744 * @sband: the band to look for rates in 1745 * @basic_rates: bitmap of basic rates 1746 * @bitrate: the bitrate for which to find the basic rate 1747 * 1748 * This function returns the basic rate corresponding to a given 1749 * bitrate, that is the next lower bitrate contained in the basic 1750 * rate map, which is, for this function, given as a bitmap of 1751 * indices of rates in the band's bitrate table. 1752 */ 1753 struct ieee80211_rate * 1754 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 1755 u32 basic_rates, int bitrate); 1756 1757 /* 1758 * Radiotap parsing functions -- for controlled injection support 1759 * 1760 * Implemented in net/wireless/radiotap.c 1761 * Documentation in Documentation/networking/radiotap-headers.txt 1762 */ 1763 1764 struct radiotap_align_size { 1765 uint8_t align:4, size:4; 1766 }; 1767 1768 struct ieee80211_radiotap_namespace { 1769 const struct radiotap_align_size *align_size; 1770 int n_bits; 1771 uint32_t oui; 1772 uint8_t subns; 1773 }; 1774 1775 struct ieee80211_radiotap_vendor_namespaces { 1776 const struct ieee80211_radiotap_namespace *ns; 1777 int n_ns; 1778 }; 1779 1780 /** 1781 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 1782 * @this_arg_index: index of current arg, valid after each successful call 1783 * to ieee80211_radiotap_iterator_next() 1784 * @this_arg: pointer to current radiotap arg; it is valid after each 1785 * call to ieee80211_radiotap_iterator_next() but also after 1786 * ieee80211_radiotap_iterator_init() where it will point to 1787 * the beginning of the actual data portion 1788 * @this_arg_size: length of the current arg, for convenience 1789 * @current_namespace: pointer to the current namespace definition 1790 * (or internally %NULL if the current namespace is unknown) 1791 * @is_radiotap_ns: indicates whether the current namespace is the default 1792 * radiotap namespace or not 1793 * 1794 * @_rtheader: pointer to the radiotap header we are walking through 1795 * @_max_length: length of radiotap header in cpu byte ordering 1796 * @_arg_index: next argument index 1797 * @_arg: next argument pointer 1798 * @_next_bitmap: internal pointer to next present u32 1799 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 1800 * @_vns: vendor namespace definitions 1801 * @_next_ns_data: beginning of the next namespace's data 1802 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 1803 * next bitmap word 1804 * 1805 * Describes the radiotap parser state. Fields prefixed with an underscore 1806 * must not be used by users of the parser, only by the parser internally. 1807 */ 1808 1809 struct ieee80211_radiotap_iterator { 1810 struct ieee80211_radiotap_header *_rtheader; 1811 const struct ieee80211_radiotap_vendor_namespaces *_vns; 1812 const struct ieee80211_radiotap_namespace *current_namespace; 1813 1814 unsigned char *_arg, *_next_ns_data; 1815 __le32 *_next_bitmap; 1816 1817 unsigned char *this_arg; 1818 int this_arg_index; 1819 int this_arg_size; 1820 1821 int is_radiotap_ns; 1822 1823 int _max_length; 1824 int _arg_index; 1825 uint32_t _bitmap_shifter; 1826 int _reset_on_ext; 1827 }; 1828 1829 extern int ieee80211_radiotap_iterator_init( 1830 struct ieee80211_radiotap_iterator *iterator, 1831 struct ieee80211_radiotap_header *radiotap_header, 1832 int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); 1833 1834 extern int ieee80211_radiotap_iterator_next( 1835 struct ieee80211_radiotap_iterator *iterator); 1836 1837 1838 extern const unsigned char rfc1042_header[6]; 1839 extern const unsigned char bridge_tunnel_header[6]; 1840 1841 /** 1842 * ieee80211_get_hdrlen_from_skb - get header length from data 1843 * 1844 * Given an skb with a raw 802.11 header at the data pointer this function 1845 * returns the 802.11 header length in bytes (not including encryption 1846 * headers). If the data in the sk_buff is too short to contain a valid 802.11 1847 * header the function returns 0. 1848 * 1849 * @skb: the frame 1850 */ 1851 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 1852 1853 /** 1854 * ieee80211_hdrlen - get header length in bytes from frame control 1855 * @fc: frame control field in little-endian format 1856 */ 1857 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 1858 1859 /** 1860 * DOC: Data path helpers 1861 * 1862 * In addition to generic utilities, cfg80211 also offers 1863 * functions that help implement the data path for devices 1864 * that do not do the 802.11/802.3 conversion on the device. 1865 */ 1866 1867 /** 1868 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 1869 * @skb: the 802.11 data frame 1870 * @addr: the device MAC address 1871 * @iftype: the virtual interface type 1872 */ 1873 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 1874 enum nl80211_iftype iftype); 1875 1876 /** 1877 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 1878 * @skb: the 802.3 frame 1879 * @addr: the device MAC address 1880 * @iftype: the virtual interface type 1881 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 1882 * @qos: build 802.11 QoS data frame 1883 */ 1884 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 1885 enum nl80211_iftype iftype, u8 *bssid, bool qos); 1886 1887 /** 1888 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 1889 * 1890 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 1891 * 802.3 frames. The @list will be empty if the decode fails. The 1892 * @skb is consumed after the function returns. 1893 * 1894 * @skb: The input IEEE 802.11n A-MSDU frame. 1895 * @list: The output list of 802.3 frames. It must be allocated and 1896 * initialized by by the caller. 1897 * @addr: The device MAC address. 1898 * @iftype: The device interface type. 1899 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 1900 */ 1901 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 1902 const u8 *addr, enum nl80211_iftype iftype, 1903 const unsigned int extra_headroom); 1904 1905 /** 1906 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 1907 * @skb: the data frame 1908 */ 1909 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 1910 1911 /** 1912 * cfg80211_find_ie - find information element in data 1913 * 1914 * @eid: element ID 1915 * @ies: data consisting of IEs 1916 * @len: length of data 1917 * 1918 * This function will return %NULL if the element ID could 1919 * not be found or if the element is invalid (claims to be 1920 * longer than the given data), or a pointer to the first byte 1921 * of the requested element, that is the byte containing the 1922 * element ID. There are no checks on the element length 1923 * other than having to fit into the given data. 1924 */ 1925 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 1926 1927 /** 1928 * DOC: Regulatory enforcement infrastructure 1929 * 1930 * TODO 1931 */ 1932 1933 /** 1934 * regulatory_hint - driver hint to the wireless core a regulatory domain 1935 * @wiphy: the wireless device giving the hint (used only for reporting 1936 * conflicts) 1937 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 1938 * should be in. If @rd is set this should be NULL. Note that if you 1939 * set this to NULL you should still set rd->alpha2 to some accepted 1940 * alpha2. 1941 * 1942 * Wireless drivers can use this function to hint to the wireless core 1943 * what it believes should be the current regulatory domain by 1944 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 1945 * domain should be in or by providing a completely build regulatory domain. 1946 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 1947 * for a regulatory domain structure for the respective country. 1948 * 1949 * The wiphy must have been registered to cfg80211 prior to this call. 1950 * For cfg80211 drivers this means you must first use wiphy_register(), 1951 * for mac80211 drivers you must first use ieee80211_register_hw(). 1952 * 1953 * Drivers should check the return value, its possible you can get 1954 * an -ENOMEM. 1955 */ 1956 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 1957 1958 /** 1959 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 1960 * @wiphy: the wireless device we want to process the regulatory domain on 1961 * @regd: the custom regulatory domain to use for this wiphy 1962 * 1963 * Drivers can sometimes have custom regulatory domains which do not apply 1964 * to a specific country. Drivers can use this to apply such custom regulatory 1965 * domains. This routine must be called prior to wiphy registration. The 1966 * custom regulatory domain will be trusted completely and as such previous 1967 * default channel settings will be disregarded. If no rule is found for a 1968 * channel on the regulatory domain the channel will be disabled. 1969 */ 1970 extern void wiphy_apply_custom_regulatory( 1971 struct wiphy *wiphy, 1972 const struct ieee80211_regdomain *regd); 1973 1974 /** 1975 * freq_reg_info - get regulatory information for the given frequency 1976 * @wiphy: the wiphy for which we want to process this rule for 1977 * @center_freq: Frequency in KHz for which we want regulatory information for 1978 * @desired_bw_khz: the desired max bandwidth you want to use per 1979 * channel. Note that this is still 20 MHz if you want to use HT40 1980 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 1981 * If set to 0 we'll assume you want the standard 20 MHz. 1982 * @reg_rule: the regulatory rule which we have for this frequency 1983 * 1984 * Use this function to get the regulatory rule for a specific frequency on 1985 * a given wireless device. If the device has a specific regulatory domain 1986 * it wants to follow we respect that unless a country IE has been received 1987 * and processed already. 1988 * 1989 * Returns 0 if it was able to find a valid regulatory rule which does 1990 * apply to the given center_freq otherwise it returns non-zero. It will 1991 * also return -ERANGE if we determine the given center_freq does not even have 1992 * a regulatory rule for a frequency range in the center_freq's band. See 1993 * freq_in_rule_band() for our current definition of a band -- this is purely 1994 * subjective and right now its 802.11 specific. 1995 */ 1996 extern int freq_reg_info(struct wiphy *wiphy, 1997 u32 center_freq, 1998 u32 desired_bw_khz, 1999 const struct ieee80211_reg_rule **reg_rule); 2000 2001 /* 2002 * Temporary wext handlers & helper functions 2003 * 2004 * In the future cfg80211 will simply assign the entire wext handler 2005 * structure to netdevs it manages, but we're not there yet. 2006 */ 2007 int cfg80211_wext_giwname(struct net_device *dev, 2008 struct iw_request_info *info, 2009 char *name, char *extra); 2010 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 2011 u32 *mode, char *extra); 2012 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 2013 u32 *mode, char *extra); 2014 int cfg80211_wext_siwscan(struct net_device *dev, 2015 struct iw_request_info *info, 2016 union iwreq_data *wrqu, char *extra); 2017 int cfg80211_wext_giwscan(struct net_device *dev, 2018 struct iw_request_info *info, 2019 struct iw_point *data, char *extra); 2020 int cfg80211_wext_siwmlme(struct net_device *dev, 2021 struct iw_request_info *info, 2022 struct iw_point *data, char *extra); 2023 int cfg80211_wext_giwrange(struct net_device *dev, 2024 struct iw_request_info *info, 2025 struct iw_point *data, char *extra); 2026 int cfg80211_wext_siwgenie(struct net_device *dev, 2027 struct iw_request_info *info, 2028 struct iw_point *data, char *extra); 2029 int cfg80211_wext_siwauth(struct net_device *dev, 2030 struct iw_request_info *info, 2031 struct iw_param *data, char *extra); 2032 int cfg80211_wext_giwauth(struct net_device *dev, 2033 struct iw_request_info *info, 2034 struct iw_param *data, char *extra); 2035 2036 int cfg80211_wext_siwfreq(struct net_device *dev, 2037 struct iw_request_info *info, 2038 struct iw_freq *freq, char *extra); 2039 int cfg80211_wext_giwfreq(struct net_device *dev, 2040 struct iw_request_info *info, 2041 struct iw_freq *freq, char *extra); 2042 int cfg80211_wext_siwessid(struct net_device *dev, 2043 struct iw_request_info *info, 2044 struct iw_point *data, char *ssid); 2045 int cfg80211_wext_giwessid(struct net_device *dev, 2046 struct iw_request_info *info, 2047 struct iw_point *data, char *ssid); 2048 int cfg80211_wext_siwrate(struct net_device *dev, 2049 struct iw_request_info *info, 2050 struct iw_param *rate, char *extra); 2051 int cfg80211_wext_giwrate(struct net_device *dev, 2052 struct iw_request_info *info, 2053 struct iw_param *rate, char *extra); 2054 2055 int cfg80211_wext_siwrts(struct net_device *dev, 2056 struct iw_request_info *info, 2057 struct iw_param *rts, char *extra); 2058 int cfg80211_wext_giwrts(struct net_device *dev, 2059 struct iw_request_info *info, 2060 struct iw_param *rts, char *extra); 2061 int cfg80211_wext_siwfrag(struct net_device *dev, 2062 struct iw_request_info *info, 2063 struct iw_param *frag, char *extra); 2064 int cfg80211_wext_giwfrag(struct net_device *dev, 2065 struct iw_request_info *info, 2066 struct iw_param *frag, char *extra); 2067 int cfg80211_wext_siwretry(struct net_device *dev, 2068 struct iw_request_info *info, 2069 struct iw_param *retry, char *extra); 2070 int cfg80211_wext_giwretry(struct net_device *dev, 2071 struct iw_request_info *info, 2072 struct iw_param *retry, char *extra); 2073 int cfg80211_wext_siwencodeext(struct net_device *dev, 2074 struct iw_request_info *info, 2075 struct iw_point *erq, char *extra); 2076 int cfg80211_wext_siwencode(struct net_device *dev, 2077 struct iw_request_info *info, 2078 struct iw_point *erq, char *keybuf); 2079 int cfg80211_wext_giwencode(struct net_device *dev, 2080 struct iw_request_info *info, 2081 struct iw_point *erq, char *keybuf); 2082 int cfg80211_wext_siwtxpower(struct net_device *dev, 2083 struct iw_request_info *info, 2084 union iwreq_data *data, char *keybuf); 2085 int cfg80211_wext_giwtxpower(struct net_device *dev, 2086 struct iw_request_info *info, 2087 union iwreq_data *data, char *keybuf); 2088 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev); 2089 2090 int cfg80211_wext_siwpower(struct net_device *dev, 2091 struct iw_request_info *info, 2092 struct iw_param *wrq, char *extra); 2093 int cfg80211_wext_giwpower(struct net_device *dev, 2094 struct iw_request_info *info, 2095 struct iw_param *wrq, char *extra); 2096 2097 int cfg80211_wext_siwap(struct net_device *dev, 2098 struct iw_request_info *info, 2099 struct sockaddr *ap_addr, char *extra); 2100 int cfg80211_wext_giwap(struct net_device *dev, 2101 struct iw_request_info *info, 2102 struct sockaddr *ap_addr, char *extra); 2103 2104 int cfg80211_wext_siwpmksa(struct net_device *dev, 2105 struct iw_request_info *info, 2106 struct iw_point *data, char *extra); 2107 2108 /* 2109 * callbacks for asynchronous cfg80211 methods, notification 2110 * functions and BSS handling helpers 2111 */ 2112 2113 /** 2114 * cfg80211_scan_done - notify that scan finished 2115 * 2116 * @request: the corresponding scan request 2117 * @aborted: set to true if the scan was aborted for any reason, 2118 * userspace will be notified of that 2119 */ 2120 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 2121 2122 /** 2123 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame 2124 * 2125 * @wiphy: the wiphy reporting the BSS 2126 * @channel: The channel the frame was received on 2127 * @mgmt: the management frame (probe response or beacon) 2128 * @len: length of the management frame 2129 * @signal: the signal strength, type depends on the wiphy's signal_type 2130 * @gfp: context flags 2131 * 2132 * This informs cfg80211 that BSS information was found and 2133 * the BSS should be updated/added. 2134 */ 2135 struct cfg80211_bss* 2136 cfg80211_inform_bss_frame(struct wiphy *wiphy, 2137 struct ieee80211_channel *channel, 2138 struct ieee80211_mgmt *mgmt, size_t len, 2139 s32 signal, gfp_t gfp); 2140 2141 /** 2142 * cfg80211_inform_bss - inform cfg80211 of a new BSS 2143 * 2144 * @wiphy: the wiphy reporting the BSS 2145 * @channel: The channel the frame was received on 2146 * @bssid: the BSSID of the BSS 2147 * @timestamp: the TSF timestamp sent by the peer 2148 * @capability: the capability field sent by the peer 2149 * @beacon_interval: the beacon interval announced by the peer 2150 * @ie: additional IEs sent by the peer 2151 * @ielen: length of the additional IEs 2152 * @signal: the signal strength, type depends on the wiphy's signal_type 2153 * @gfp: context flags 2154 * 2155 * This informs cfg80211 that BSS information was found and 2156 * the BSS should be updated/added. 2157 */ 2158 struct cfg80211_bss* 2159 cfg80211_inform_bss(struct wiphy *wiphy, 2160 struct ieee80211_channel *channel, 2161 const u8 *bssid, 2162 u64 timestamp, u16 capability, u16 beacon_interval, 2163 const u8 *ie, size_t ielen, 2164 s32 signal, gfp_t gfp); 2165 2166 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 2167 struct ieee80211_channel *channel, 2168 const u8 *bssid, 2169 const u8 *ssid, size_t ssid_len, 2170 u16 capa_mask, u16 capa_val); 2171 static inline struct cfg80211_bss * 2172 cfg80211_get_ibss(struct wiphy *wiphy, 2173 struct ieee80211_channel *channel, 2174 const u8 *ssid, size_t ssid_len) 2175 { 2176 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 2177 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2178 } 2179 2180 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 2181 struct ieee80211_channel *channel, 2182 const u8 *meshid, size_t meshidlen, 2183 const u8 *meshcfg); 2184 void cfg80211_put_bss(struct cfg80211_bss *bss); 2185 2186 /** 2187 * cfg80211_unlink_bss - unlink BSS from internal data structures 2188 * @wiphy: the wiphy 2189 * @bss: the bss to remove 2190 * 2191 * This function removes the given BSS from the internal data structures 2192 * thereby making it no longer show up in scan results etc. Use this 2193 * function when you detect a BSS is gone. Normally BSSes will also time 2194 * out, so it is not necessary to use this function at all. 2195 */ 2196 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 2197 2198 /** 2199 * cfg80211_send_rx_auth - notification of processed authentication 2200 * @dev: network device 2201 * @buf: authentication frame (header + body) 2202 * @len: length of the frame data 2203 * 2204 * This function is called whenever an authentication has been processed in 2205 * station mode. The driver is required to call either this function or 2206 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 2207 * call. This function may sleep. 2208 */ 2209 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 2210 2211 /** 2212 * cfg80211_send_auth_timeout - notification of timed out authentication 2213 * @dev: network device 2214 * @addr: The MAC address of the device with which the authentication timed out 2215 * 2216 * This function may sleep. 2217 */ 2218 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 2219 2220 /** 2221 * __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled 2222 * @dev: network device 2223 * @addr: The MAC address of the device with which the authentication timed out 2224 * 2225 * When a pending authentication had no action yet, the driver may decide 2226 * to not send a deauth frame, but in that case must calls this function 2227 * to tell cfg80211 about this decision. It is only valid to call this 2228 * function within the deauth() callback. 2229 */ 2230 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr); 2231 2232 /** 2233 * cfg80211_send_rx_assoc - notification of processed association 2234 * @dev: network device 2235 * @buf: (re)association response frame (header + body) 2236 * @len: length of the frame data 2237 * 2238 * This function is called whenever a (re)association response has been 2239 * processed in station mode. The driver is required to call either this 2240 * function or cfg80211_send_assoc_timeout() to indicate the result of 2241 * cfg80211_ops::assoc() call. This function may sleep. 2242 */ 2243 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); 2244 2245 /** 2246 * cfg80211_send_assoc_timeout - notification of timed out association 2247 * @dev: network device 2248 * @addr: The MAC address of the device with which the association timed out 2249 * 2250 * This function may sleep. 2251 */ 2252 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 2253 2254 /** 2255 * cfg80211_send_deauth - notification of processed deauthentication 2256 * @dev: network device 2257 * @buf: deauthentication frame (header + body) 2258 * @len: length of the frame data 2259 * 2260 * This function is called whenever deauthentication has been processed in 2261 * station mode. This includes both received deauthentication frames and 2262 * locally generated ones. This function may sleep. 2263 */ 2264 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2265 2266 /** 2267 * __cfg80211_send_deauth - notification of processed deauthentication 2268 * @dev: network device 2269 * @buf: deauthentication frame (header + body) 2270 * @len: length of the frame data 2271 * 2272 * Like cfg80211_send_deauth(), but doesn't take the wdev lock. 2273 */ 2274 void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2275 2276 /** 2277 * cfg80211_send_disassoc - notification of processed disassociation 2278 * @dev: network device 2279 * @buf: disassociation response frame (header + body) 2280 * @len: length of the frame data 2281 * 2282 * This function is called whenever disassociation has been processed in 2283 * station mode. This includes both received disassociation frames and locally 2284 * generated ones. This function may sleep. 2285 */ 2286 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 2287 2288 /** 2289 * __cfg80211_send_disassoc - notification of processed disassociation 2290 * @dev: network device 2291 * @buf: disassociation response frame (header + body) 2292 * @len: length of the frame data 2293 * 2294 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock. 2295 */ 2296 void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, 2297 size_t len); 2298 2299 /** 2300 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 2301 * @dev: network device 2302 * @addr: The source MAC address of the frame 2303 * @key_type: The key type that the received frame used 2304 * @key_id: Key identifier (0..3) 2305 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 2306 * @gfp: allocation flags 2307 * 2308 * This function is called whenever the local MAC detects a MIC failure in a 2309 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 2310 * primitive. 2311 */ 2312 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 2313 enum nl80211_key_type key_type, int key_id, 2314 const u8 *tsc, gfp_t gfp); 2315 2316 /** 2317 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 2318 * 2319 * @dev: network device 2320 * @bssid: the BSSID of the IBSS joined 2321 * @gfp: allocation flags 2322 * 2323 * This function notifies cfg80211 that the device joined an IBSS or 2324 * switched to a different BSSID. Before this function can be called, 2325 * either a beacon has to have been received from the IBSS, or one of 2326 * the cfg80211_inform_bss{,_frame} functions must have been called 2327 * with the locally generated beacon -- this guarantees that there is 2328 * always a scan result for this IBSS. cfg80211 will handle the rest. 2329 */ 2330 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 2331 2332 /** 2333 * DOC: RFkill integration 2334 * 2335 * RFkill integration in cfg80211 is almost invisible to drivers, 2336 * as cfg80211 automatically registers an rfkill instance for each 2337 * wireless device it knows about. Soft kill is also translated 2338 * into disconnecting and turning all interfaces off, drivers are 2339 * expected to turn off the device when all interfaces are down. 2340 * 2341 * However, devices may have a hard RFkill line, in which case they 2342 * also need to interact with the rfkill subsystem, via cfg80211. 2343 * They can do this with a few helper functions documented here. 2344 */ 2345 2346 /** 2347 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 2348 * @wiphy: the wiphy 2349 * @blocked: block status 2350 */ 2351 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 2352 2353 /** 2354 * wiphy_rfkill_start_polling - start polling rfkill 2355 * @wiphy: the wiphy 2356 */ 2357 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 2358 2359 /** 2360 * wiphy_rfkill_stop_polling - stop polling rfkill 2361 * @wiphy: the wiphy 2362 */ 2363 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 2364 2365 #ifdef CONFIG_NL80211_TESTMODE 2366 /** 2367 * DOC: Test mode 2368 * 2369 * Test mode is a set of utility functions to allow drivers to 2370 * interact with driver-specific tools to aid, for instance, 2371 * factory programming. 2372 * 2373 * This chapter describes how drivers interact with it, for more 2374 * information see the nl80211 book's chapter on it. 2375 */ 2376 2377 /** 2378 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 2379 * @wiphy: the wiphy 2380 * @approxlen: an upper bound of the length of the data that will 2381 * be put into the skb 2382 * 2383 * This function allocates and pre-fills an skb for a reply to 2384 * the testmode command. Since it is intended for a reply, calling 2385 * it outside of the @testmode_cmd operation is invalid. 2386 * 2387 * The returned skb (or %NULL if any errors happen) is pre-filled 2388 * with the wiphy index and set up in a way that any data that is 2389 * put into the skb (with skb_put(), nla_put() or similar) will end 2390 * up being within the %NL80211_ATTR_TESTDATA attribute, so all that 2391 * needs to be done with the skb is adding data for the corresponding 2392 * userspace tool which can then read that data out of the testdata 2393 * attribute. You must not modify the skb in any other way. 2394 * 2395 * When done, call cfg80211_testmode_reply() with the skb and return 2396 * its error code as the result of the @testmode_cmd operation. 2397 */ 2398 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 2399 int approxlen); 2400 2401 /** 2402 * cfg80211_testmode_reply - send the reply skb 2403 * @skb: The skb, must have been allocated with 2404 * cfg80211_testmode_alloc_reply_skb() 2405 * 2406 * Returns an error code or 0 on success, since calling this 2407 * function will usually be the last thing before returning 2408 * from the @testmode_cmd you should return the error code. 2409 * Note that this function consumes the skb regardless of the 2410 * return value. 2411 */ 2412 int cfg80211_testmode_reply(struct sk_buff *skb); 2413 2414 /** 2415 * cfg80211_testmode_alloc_event_skb - allocate testmode event 2416 * @wiphy: the wiphy 2417 * @approxlen: an upper bound of the length of the data that will 2418 * be put into the skb 2419 * @gfp: allocation flags 2420 * 2421 * This function allocates and pre-fills an skb for an event on the 2422 * testmode multicast group. 2423 * 2424 * The returned skb (or %NULL if any errors happen) is set up in the 2425 * same way as with cfg80211_testmode_alloc_reply_skb() but prepared 2426 * for an event. As there, you should simply add data to it that will 2427 * then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must 2428 * not modify the skb in any other way. 2429 * 2430 * When done filling the skb, call cfg80211_testmode_event() with the 2431 * skb to send the event. 2432 */ 2433 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 2434 int approxlen, gfp_t gfp); 2435 2436 /** 2437 * cfg80211_testmode_event - send the event 2438 * @skb: The skb, must have been allocated with 2439 * cfg80211_testmode_alloc_event_skb() 2440 * @gfp: allocation flags 2441 * 2442 * This function sends the given @skb, which must have been allocated 2443 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 2444 * consumes it. 2445 */ 2446 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp); 2447 2448 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 2449 #else 2450 #define CFG80211_TESTMODE_CMD(cmd) 2451 #endif 2452 2453 /** 2454 * cfg80211_connect_result - notify cfg80211 of connection result 2455 * 2456 * @dev: network device 2457 * @bssid: the BSSID of the AP 2458 * @req_ie: association request IEs (maybe be %NULL) 2459 * @req_ie_len: association request IEs length 2460 * @resp_ie: association response IEs (may be %NULL) 2461 * @resp_ie_len: assoc response IEs length 2462 * @status: status code, 0 for successful connection, use 2463 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 2464 * the real status code for failures. 2465 * @gfp: allocation flags 2466 * 2467 * It should be called by the underlying driver whenever connect() has 2468 * succeeded. 2469 */ 2470 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 2471 const u8 *req_ie, size_t req_ie_len, 2472 const u8 *resp_ie, size_t resp_ie_len, 2473 u16 status, gfp_t gfp); 2474 2475 /** 2476 * cfg80211_roamed - notify cfg80211 of roaming 2477 * 2478 * @dev: network device 2479 * @bssid: the BSSID of the new AP 2480 * @req_ie: association request IEs (maybe be %NULL) 2481 * @req_ie_len: association request IEs length 2482 * @resp_ie: association response IEs (may be %NULL) 2483 * @resp_ie_len: assoc response IEs length 2484 * @gfp: allocation flags 2485 * 2486 * It should be called by the underlying driver whenever it roamed 2487 * from one AP to another while connected. 2488 */ 2489 void cfg80211_roamed(struct net_device *dev, const u8 *bssid, 2490 const u8 *req_ie, size_t req_ie_len, 2491 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 2492 2493 /** 2494 * cfg80211_disconnected - notify cfg80211 that connection was dropped 2495 * 2496 * @dev: network device 2497 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 2498 * @ie_len: length of IEs 2499 * @reason: reason code for the disconnection, set it to 0 if unknown 2500 * @gfp: allocation flags 2501 * 2502 * After it calls this function, the driver should enter an idle state 2503 * and not try to connect to any AP any more. 2504 */ 2505 void cfg80211_disconnected(struct net_device *dev, u16 reason, 2506 u8 *ie, size_t ie_len, gfp_t gfp); 2507 2508 /** 2509 * cfg80211_ready_on_channel - notification of remain_on_channel start 2510 * @dev: network device 2511 * @cookie: the request cookie 2512 * @chan: The current channel (from remain_on_channel request) 2513 * @channel_type: Channel type 2514 * @duration: Duration in milliseconds that the driver intents to remain on the 2515 * channel 2516 * @gfp: allocation flags 2517 */ 2518 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, 2519 struct ieee80211_channel *chan, 2520 enum nl80211_channel_type channel_type, 2521 unsigned int duration, gfp_t gfp); 2522 2523 /** 2524 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 2525 * @dev: network device 2526 * @cookie: the request cookie 2527 * @chan: The current channel (from remain_on_channel request) 2528 * @channel_type: Channel type 2529 * @gfp: allocation flags 2530 */ 2531 void cfg80211_remain_on_channel_expired(struct net_device *dev, 2532 u64 cookie, 2533 struct ieee80211_channel *chan, 2534 enum nl80211_channel_type channel_type, 2535 gfp_t gfp); 2536 2537 2538 /** 2539 * cfg80211_new_sta - notify userspace about station 2540 * 2541 * @dev: the netdev 2542 * @mac_addr: the station's address 2543 * @sinfo: the station information 2544 * @gfp: allocation flags 2545 */ 2546 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 2547 struct station_info *sinfo, gfp_t gfp); 2548 2549 /** 2550 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 2551 * @dev: network device 2552 * @freq: Frequency on which the frame was received in MHz 2553 * @buf: Management frame (header + body) 2554 * @len: length of the frame data 2555 * @gfp: context flags 2556 * 2557 * Returns %true if a user space application has registered for this frame. 2558 * For action frames, that makes it responsible for rejecting unrecognized 2559 * action frames; %false otherwise, in which case for action frames the 2560 * driver is responsible for rejecting the frame. 2561 * 2562 * This function is called whenever an Action frame is received for a station 2563 * mode interface, but is not processed in kernel. 2564 */ 2565 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, 2566 size_t len, gfp_t gfp); 2567 2568 /** 2569 * cfg80211_mgmt_tx_status - notification of TX status for management frame 2570 * @dev: network device 2571 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 2572 * @buf: Management frame (header + body) 2573 * @len: length of the frame data 2574 * @ack: Whether frame was acknowledged 2575 * @gfp: context flags 2576 * 2577 * This function is called whenever a management frame was requested to be 2578 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 2579 * transmission attempt. 2580 */ 2581 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, 2582 const u8 *buf, size_t len, bool ack, gfp_t gfp); 2583 2584 2585 /** 2586 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 2587 * @dev: network device 2588 * @rssi_event: the triggered RSSI event 2589 * @gfp: context flags 2590 * 2591 * This function is called when a configured connection quality monitoring 2592 * rssi threshold reached event occurs. 2593 */ 2594 void cfg80211_cqm_rssi_notify(struct net_device *dev, 2595 enum nl80211_cqm_rssi_threshold_event rssi_event, 2596 gfp_t gfp); 2597 2598 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 2599 2600 /* wiphy_printk helpers, similar to dev_printk */ 2601 2602 #define wiphy_printk(level, wiphy, format, args...) \ 2603 dev_printk(level, &(wiphy)->dev, format, ##args) 2604 #define wiphy_emerg(wiphy, format, args...) \ 2605 dev_emerg(&(wiphy)->dev, format, ##args) 2606 #define wiphy_alert(wiphy, format, args...) \ 2607 dev_alert(&(wiphy)->dev, format, ##args) 2608 #define wiphy_crit(wiphy, format, args...) \ 2609 dev_crit(&(wiphy)->dev, format, ##args) 2610 #define wiphy_err(wiphy, format, args...) \ 2611 dev_err(&(wiphy)->dev, format, ##args) 2612 #define wiphy_warn(wiphy, format, args...) \ 2613 dev_warn(&(wiphy)->dev, format, ##args) 2614 #define wiphy_notice(wiphy, format, args...) \ 2615 dev_notice(&(wiphy)->dev, format, ##args) 2616 #define wiphy_info(wiphy, format, args...) \ 2617 dev_info(&(wiphy)->dev, format, ##args) 2618 2619 #define wiphy_debug(wiphy, format, args...) \ 2620 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 2621 2622 #define wiphy_dbg(wiphy, format, args...) \ 2623 dev_dbg(&(wiphy)->dev, format, ##args) 2624 2625 #if defined(VERBOSE_DEBUG) 2626 #define wiphy_vdbg wiphy_dbg 2627 #else 2628 #define wiphy_vdbg(wiphy, format, args...) \ 2629 ({ \ 2630 if (0) \ 2631 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 2632 0; \ 2633 }) 2634 #endif 2635 2636 /* 2637 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 2638 * of using a WARN/WARN_ON to get the message out, including the 2639 * file/line information and a backtrace. 2640 */ 2641 #define wiphy_WARN(wiphy, format, args...) \ 2642 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 2643 2644 #endif /* __NET_CFG80211_H */ 2645