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 * @use_4addr: use 4-address frames 262 */ 263 struct vif_params { 264 int use_4addr; 265 }; 266 267 /** 268 * struct key_params - key information 269 * 270 * Information about a key 271 * 272 * @key: key material 273 * @key_len: length of key material 274 * @cipher: cipher suite selector 275 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 276 * with the get_key() callback, must be in little endian, 277 * length given by @seq_len. 278 * @seq_len: length of @seq. 279 */ 280 struct key_params { 281 u8 *key; 282 u8 *seq; 283 int key_len; 284 int seq_len; 285 u32 cipher; 286 }; 287 288 /** 289 * enum survey_info_flags - survey information flags 290 * 291 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 292 * @SURVEY_INFO_IN_USE: channel is currently being used 293 * @SURVEY_INFO_CHANNEL_TIME: channel active time (in ms) was filled in 294 * @SURVEY_INFO_CHANNEL_TIME_BUSY: channel busy time was filled in 295 * @SURVEY_INFO_CHANNEL_TIME_EXT_BUSY: extension channel busy time was filled in 296 * @SURVEY_INFO_CHANNEL_TIME_RX: channel receive time was filled in 297 * @SURVEY_INFO_CHANNEL_TIME_TX: channel transmit time was filled in 298 * 299 * Used by the driver to indicate which info in &struct survey_info 300 * it has filled in during the get_survey(). 301 */ 302 enum survey_info_flags { 303 SURVEY_INFO_NOISE_DBM = 1<<0, 304 SURVEY_INFO_IN_USE = 1<<1, 305 SURVEY_INFO_CHANNEL_TIME = 1<<2, 306 SURVEY_INFO_CHANNEL_TIME_BUSY = 1<<3, 307 SURVEY_INFO_CHANNEL_TIME_EXT_BUSY = 1<<4, 308 SURVEY_INFO_CHANNEL_TIME_RX = 1<<5, 309 SURVEY_INFO_CHANNEL_TIME_TX = 1<<6, 310 }; 311 312 /** 313 * struct survey_info - channel survey response 314 * 315 * @channel: the channel this survey record reports, mandatory 316 * @filled: bitflag of flags from &enum survey_info_flags 317 * @noise: channel noise in dBm. This and all following fields are 318 * optional 319 * @channel_time: amount of time in ms the radio spent on the channel 320 * @channel_time_busy: amount of time the primary channel was sensed busy 321 * @channel_time_ext_busy: amount of time the extension channel was sensed busy 322 * @channel_time_rx: amount of time the radio spent receiving data 323 * @channel_time_tx: amount of time the radio spent transmitting data 324 * 325 * Used by dump_survey() to report back per-channel survey information. 326 * 327 * This structure can later be expanded with things like 328 * channel duty cycle etc. 329 */ 330 struct survey_info { 331 struct ieee80211_channel *channel; 332 u64 channel_time; 333 u64 channel_time_busy; 334 u64 channel_time_ext_busy; 335 u64 channel_time_rx; 336 u64 channel_time_tx; 337 u32 filled; 338 s8 noise; 339 }; 340 341 /** 342 * struct beacon_parameters - beacon parameters 343 * 344 * Used to configure the beacon for an interface. 345 * 346 * @head: head portion of beacon (before TIM IE) 347 * or %NULL if not changed 348 * @tail: tail portion of beacon (after TIM IE) 349 * or %NULL if not changed 350 * @interval: beacon interval or zero if not changed 351 * @dtim_period: DTIM period or zero if not changed 352 * @head_len: length of @head 353 * @tail_len: length of @tail 354 */ 355 struct beacon_parameters { 356 u8 *head, *tail; 357 int interval, dtim_period; 358 int head_len, tail_len; 359 }; 360 361 /** 362 * enum plink_action - actions to perform in mesh peers 363 * 364 * @PLINK_ACTION_INVALID: action 0 is reserved 365 * @PLINK_ACTION_OPEN: start mesh peer link establishment 366 * @PLINK_ACTION_BLOCK: block traffic from this mesh peer 367 */ 368 enum plink_actions { 369 PLINK_ACTION_INVALID, 370 PLINK_ACTION_OPEN, 371 PLINK_ACTION_BLOCK, 372 }; 373 374 /** 375 * struct station_parameters - station parameters 376 * 377 * Used to change and create a new station. 378 * 379 * @vlan: vlan interface station should belong to 380 * @supported_rates: supported rates in IEEE 802.11 format 381 * (or NULL for no change) 382 * @supported_rates_len: number of supported rates 383 * @sta_flags_mask: station flags that changed 384 * (bitmask of BIT(NL80211_STA_FLAG_...)) 385 * @sta_flags_set: station flags values 386 * (bitmask of BIT(NL80211_STA_FLAG_...)) 387 * @listen_interval: listen interval or -1 for no change 388 * @aid: AID or zero for no change 389 * @plink_action: plink action to take 390 * @plink_state: set the peer link state for a station 391 * @ht_capa: HT capabilities of station 392 */ 393 struct station_parameters { 394 u8 *supported_rates; 395 struct net_device *vlan; 396 u32 sta_flags_mask, sta_flags_set; 397 int listen_interval; 398 u16 aid; 399 u8 supported_rates_len; 400 u8 plink_action; 401 u8 plink_state; 402 struct ieee80211_ht_cap *ht_capa; 403 }; 404 405 /** 406 * enum station_info_flags - station information flags 407 * 408 * Used by the driver to indicate which info in &struct station_info 409 * it has filled in during get_station() or dump_station(). 410 * 411 * @STATION_INFO_INACTIVE_TIME: @inactive_time filled 412 * @STATION_INFO_RX_BYTES: @rx_bytes filled 413 * @STATION_INFO_TX_BYTES: @tx_bytes filled 414 * @STATION_INFO_LLID: @llid filled 415 * @STATION_INFO_PLID: @plid filled 416 * @STATION_INFO_PLINK_STATE: @plink_state filled 417 * @STATION_INFO_SIGNAL: @signal filled 418 * @STATION_INFO_TX_BITRATE: @txrate fields are filled 419 * (tx_bitrate, tx_bitrate_flags and tx_bitrate_mcs) 420 * @STATION_INFO_RX_PACKETS: @rx_packets filled 421 * @STATION_INFO_TX_PACKETS: @tx_packets filled 422 * @STATION_INFO_TX_RETRIES: @tx_retries filled 423 * @STATION_INFO_TX_FAILED: @tx_failed filled 424 * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled 425 * @STATION_INFO_SIGNAL_AVG: @signal_avg filled 426 * @STATION_INFO_RX_BITRATE: @rxrate fields are filled 427 * @STATION_INFO_BSS_PARAM: @bss_param filled 428 * @STATION_INFO_CONNECTED_TIME: @connected_time filled 429 */ 430 enum station_info_flags { 431 STATION_INFO_INACTIVE_TIME = 1<<0, 432 STATION_INFO_RX_BYTES = 1<<1, 433 STATION_INFO_TX_BYTES = 1<<2, 434 STATION_INFO_LLID = 1<<3, 435 STATION_INFO_PLID = 1<<4, 436 STATION_INFO_PLINK_STATE = 1<<5, 437 STATION_INFO_SIGNAL = 1<<6, 438 STATION_INFO_TX_BITRATE = 1<<7, 439 STATION_INFO_RX_PACKETS = 1<<8, 440 STATION_INFO_TX_PACKETS = 1<<9, 441 STATION_INFO_TX_RETRIES = 1<<10, 442 STATION_INFO_TX_FAILED = 1<<11, 443 STATION_INFO_RX_DROP_MISC = 1<<12, 444 STATION_INFO_SIGNAL_AVG = 1<<13, 445 STATION_INFO_RX_BITRATE = 1<<14, 446 STATION_INFO_BSS_PARAM = 1<<15, 447 STATION_INFO_CONNECTED_TIME = 1<<16 448 }; 449 450 /** 451 * enum station_info_rate_flags - bitrate info flags 452 * 453 * Used by the driver to indicate the specific rate transmission 454 * type for 802.11n transmissions. 455 * 456 * @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled 457 * @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission 458 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 459 */ 460 enum rate_info_flags { 461 RATE_INFO_FLAGS_MCS = 1<<0, 462 RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1, 463 RATE_INFO_FLAGS_SHORT_GI = 1<<2, 464 }; 465 466 /** 467 * struct rate_info - bitrate information 468 * 469 * Information about a receiving or transmitting bitrate 470 * 471 * @flags: bitflag of flags from &enum rate_info_flags 472 * @mcs: mcs index if struct describes a 802.11n bitrate 473 * @legacy: bitrate in 100kbit/s for 802.11abg 474 */ 475 struct rate_info { 476 u8 flags; 477 u8 mcs; 478 u16 legacy; 479 }; 480 481 /** 482 * enum station_info_rate_flags - bitrate info flags 483 * 484 * Used by the driver to indicate the specific rate transmission 485 * type for 802.11n transmissions. 486 * 487 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 488 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 489 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 490 */ 491 enum bss_param_flags { 492 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 493 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 494 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 495 }; 496 497 /** 498 * struct sta_bss_parameters - BSS parameters for the attached station 499 * 500 * Information about the currently associated BSS 501 * 502 * @flags: bitflag of flags from &enum bss_param_flags 503 * @dtim_period: DTIM period for the BSS 504 * @beacon_interval: beacon interval 505 */ 506 struct sta_bss_parameters { 507 u8 flags; 508 u8 dtim_period; 509 u16 beacon_interval; 510 }; 511 512 /** 513 * struct station_info - station information 514 * 515 * Station information filled by driver for get_station() and dump_station. 516 * 517 * @filled: bitflag of flags from &enum station_info_flags 518 * @connected_time: time(in secs) since a station is last connected 519 * @inactive_time: time since last station activity (tx/rx) in milliseconds 520 * @rx_bytes: bytes received from this station 521 * @tx_bytes: bytes transmitted to this station 522 * @llid: mesh local link id 523 * @plid: mesh peer link id 524 * @plink_state: mesh peer link state 525 * @signal: signal strength of last received packet in dBm 526 * @signal_avg: signal strength average in dBm 527 * @txrate: current unicast bitrate from this station 528 * @rxrate: current unicast bitrate to this station 529 * @rx_packets: packets received from this station 530 * @tx_packets: packets transmitted to this station 531 * @tx_retries: cumulative retry counts 532 * @tx_failed: number of failed transmissions (retries exceeded, no ACK) 533 * @rx_dropped_misc: Dropped for un-specified reason. 534 * @bss_param: current BSS parameters 535 * @generation: generation number for nl80211 dumps. 536 * This number should increase every time the list of stations 537 * changes, i.e. when a station is added or removed, so that 538 * userspace can tell whether it got a consistent snapshot. 539 */ 540 struct station_info { 541 u32 filled; 542 u32 connected_time; 543 u32 inactive_time; 544 u32 rx_bytes; 545 u32 tx_bytes; 546 u16 llid; 547 u16 plid; 548 u8 plink_state; 549 s8 signal; 550 s8 signal_avg; 551 struct rate_info txrate; 552 struct rate_info rxrate; 553 u32 rx_packets; 554 u32 tx_packets; 555 u32 tx_retries; 556 u32 tx_failed; 557 u32 rx_dropped_misc; 558 struct sta_bss_parameters bss_param; 559 560 int generation; 561 }; 562 563 /** 564 * enum monitor_flags - monitor flags 565 * 566 * Monitor interface configuration flags. Note that these must be the bits 567 * according to the nl80211 flags. 568 * 569 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 570 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 571 * @MONITOR_FLAG_CONTROL: pass control frames 572 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 573 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 574 */ 575 enum monitor_flags { 576 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 577 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 578 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 579 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 580 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 581 }; 582 583 /** 584 * enum mpath_info_flags - mesh path information flags 585 * 586 * Used by the driver to indicate which info in &struct mpath_info it has filled 587 * in during get_station() or dump_station(). 588 * 589 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 590 * @MPATH_INFO_SN: @sn filled 591 * @MPATH_INFO_METRIC: @metric filled 592 * @MPATH_INFO_EXPTIME: @exptime filled 593 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 594 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 595 * @MPATH_INFO_FLAGS: @flags filled 596 */ 597 enum mpath_info_flags { 598 MPATH_INFO_FRAME_QLEN = BIT(0), 599 MPATH_INFO_SN = BIT(1), 600 MPATH_INFO_METRIC = BIT(2), 601 MPATH_INFO_EXPTIME = BIT(3), 602 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 603 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 604 MPATH_INFO_FLAGS = BIT(6), 605 }; 606 607 /** 608 * struct mpath_info - mesh path information 609 * 610 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 611 * 612 * @filled: bitfield of flags from &enum mpath_info_flags 613 * @frame_qlen: number of queued frames for this destination 614 * @sn: target sequence number 615 * @metric: metric (cost) of this mesh path 616 * @exptime: expiration time for the mesh path from now, in msecs 617 * @flags: mesh path flags 618 * @discovery_timeout: total mesh path discovery timeout, in msecs 619 * @discovery_retries: mesh path discovery retries 620 * @generation: generation number for nl80211 dumps. 621 * This number should increase every time the list of mesh paths 622 * changes, i.e. when a station is added or removed, so that 623 * userspace can tell whether it got a consistent snapshot. 624 */ 625 struct mpath_info { 626 u32 filled; 627 u32 frame_qlen; 628 u32 sn; 629 u32 metric; 630 u32 exptime; 631 u32 discovery_timeout; 632 u8 discovery_retries; 633 u8 flags; 634 635 int generation; 636 }; 637 638 /** 639 * struct bss_parameters - BSS parameters 640 * 641 * Used to change BSS parameters (mainly for AP mode). 642 * 643 * @use_cts_prot: Whether to use CTS protection 644 * (0 = no, 1 = yes, -1 = do not change) 645 * @use_short_preamble: Whether the use of short preambles is allowed 646 * (0 = no, 1 = yes, -1 = do not change) 647 * @use_short_slot_time: Whether the use of short slot time is allowed 648 * (0 = no, 1 = yes, -1 = do not change) 649 * @basic_rates: basic rates in IEEE 802.11 format 650 * (or NULL for no change) 651 * @basic_rates_len: number of basic rates 652 * @ap_isolate: do not forward packets between connected stations 653 * @ht_opmode: HT Operation mode 654 * (u16 = opmode, -1 = do not change) 655 */ 656 struct bss_parameters { 657 int use_cts_prot; 658 int use_short_preamble; 659 int use_short_slot_time; 660 u8 *basic_rates; 661 u8 basic_rates_len; 662 int ap_isolate; 663 int ht_opmode; 664 }; 665 666 /* 667 * struct mesh_config - 802.11s mesh configuration 668 * 669 * These parameters can be changed while the mesh is active. 670 */ 671 struct mesh_config { 672 /* Timeouts in ms */ 673 /* Mesh plink management parameters */ 674 u16 dot11MeshRetryTimeout; 675 u16 dot11MeshConfirmTimeout; 676 u16 dot11MeshHoldingTimeout; 677 u16 dot11MeshMaxPeerLinks; 678 u8 dot11MeshMaxRetries; 679 u8 dot11MeshTTL; 680 /* ttl used in path selection information elements */ 681 u8 element_ttl; 682 bool auto_open_plinks; 683 /* HWMP parameters */ 684 u8 dot11MeshHWMPmaxPREQretries; 685 u32 path_refresh_time; 686 u16 min_discovery_timeout; 687 u32 dot11MeshHWMPactivePathTimeout; 688 u16 dot11MeshHWMPpreqMinInterval; 689 u16 dot11MeshHWMPnetDiameterTraversalTime; 690 u8 dot11MeshHWMPRootMode; 691 }; 692 693 /** 694 * struct mesh_setup - 802.11s mesh setup configuration 695 * @mesh_id: the mesh ID 696 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 697 * @path_sel_proto: which path selection protocol to use 698 * @path_metric: which metric to use 699 * @ie: vendor information elements (optional) 700 * @ie_len: length of vendor information elements 701 * @is_authenticated: this mesh requires authentication 702 * @is_secure: this mesh uses security 703 * 704 * These parameters are fixed when the mesh is created. 705 */ 706 struct mesh_setup { 707 const u8 *mesh_id; 708 u8 mesh_id_len; 709 u8 path_sel_proto; 710 u8 path_metric; 711 const u8 *ie; 712 u8 ie_len; 713 bool is_authenticated; 714 bool is_secure; 715 }; 716 717 /** 718 * struct ieee80211_txq_params - TX queue parameters 719 * @queue: TX queue identifier (NL80211_TXQ_Q_*) 720 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 721 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 722 * 1..32767] 723 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 724 * 1..32767] 725 * @aifs: Arbitration interframe space [0..255] 726 */ 727 struct ieee80211_txq_params { 728 enum nl80211_txq_q queue; 729 u16 txop; 730 u16 cwmin; 731 u16 cwmax; 732 u8 aifs; 733 }; 734 735 /* from net/wireless.h */ 736 struct wiphy; 737 738 /** 739 * DOC: Scanning and BSS list handling 740 * 741 * The scanning process itself is fairly simple, but cfg80211 offers quite 742 * a bit of helper functionality. To start a scan, the scan operation will 743 * be invoked with a scan definition. This scan definition contains the 744 * channels to scan, and the SSIDs to send probe requests for (including the 745 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 746 * probe. Additionally, a scan request may contain extra information elements 747 * that should be added to the probe request. The IEs are guaranteed to be 748 * well-formed, and will not exceed the maximum length the driver advertised 749 * in the wiphy structure. 750 * 751 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 752 * it is responsible for maintaining the BSS list; the driver should not 753 * maintain a list itself. For this notification, various functions exist. 754 * 755 * Since drivers do not maintain a BSS list, there are also a number of 756 * functions to search for a BSS and obtain information about it from the 757 * BSS structure cfg80211 maintains. The BSS list is also made available 758 * to userspace. 759 */ 760 761 /** 762 * struct cfg80211_ssid - SSID description 763 * @ssid: the SSID 764 * @ssid_len: length of the ssid 765 */ 766 struct cfg80211_ssid { 767 u8 ssid[IEEE80211_MAX_SSID_LEN]; 768 u8 ssid_len; 769 }; 770 771 /** 772 * struct cfg80211_scan_request - scan request description 773 * 774 * @ssids: SSIDs to scan for (active scan only) 775 * @n_ssids: number of SSIDs 776 * @channels: channels to scan on. 777 * @n_channels: total number of channels to scan 778 * @ie: optional information element(s) to add into Probe Request or %NULL 779 * @ie_len: length of ie in octets 780 * @wiphy: the wiphy this was for 781 * @dev: the interface 782 * @aborted: (internal) scan request was notified as aborted 783 */ 784 struct cfg80211_scan_request { 785 struct cfg80211_ssid *ssids; 786 int n_ssids; 787 u32 n_channels; 788 const u8 *ie; 789 size_t ie_len; 790 791 /* internal */ 792 struct wiphy *wiphy; 793 struct net_device *dev; 794 bool aborted; 795 796 /* keep last */ 797 struct ieee80211_channel *channels[0]; 798 }; 799 800 /** 801 * struct cfg80211_sched_scan_request - scheduled scan request description 802 * 803 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 804 * @n_ssids: number of SSIDs 805 * @n_channels: total number of channels to scan 806 * @interval: interval between each scheduled scan cycle 807 * @ie: optional information element(s) to add into Probe Request or %NULL 808 * @ie_len: length of ie in octets 809 * @wiphy: the wiphy this was for 810 * @dev: the interface 811 * @channels: channels to scan 812 */ 813 struct cfg80211_sched_scan_request { 814 struct cfg80211_ssid *ssids; 815 int n_ssids; 816 u32 n_channels; 817 u32 interval; 818 const u8 *ie; 819 size_t ie_len; 820 821 /* internal */ 822 struct wiphy *wiphy; 823 struct net_device *dev; 824 825 /* keep last */ 826 struct ieee80211_channel *channels[0]; 827 }; 828 829 /** 830 * enum cfg80211_signal_type - signal type 831 * 832 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 833 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 834 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 835 */ 836 enum cfg80211_signal_type { 837 CFG80211_SIGNAL_TYPE_NONE, 838 CFG80211_SIGNAL_TYPE_MBM, 839 CFG80211_SIGNAL_TYPE_UNSPEC, 840 }; 841 842 /** 843 * struct cfg80211_bss - BSS description 844 * 845 * This structure describes a BSS (which may also be a mesh network) 846 * for use in scan results and similar. 847 * 848 * @channel: channel this BSS is on 849 * @bssid: BSSID of the BSS 850 * @tsf: timestamp of last received update 851 * @beacon_interval: the beacon interval as from the frame 852 * @capability: the capability field in host byte order 853 * @information_elements: the information elements (Note that there 854 * is no guarantee that these are well-formed!); this is a pointer to 855 * either the beacon_ies or proberesp_ies depending on whether Probe 856 * Response frame has been received 857 * @len_information_elements: total length of the information elements 858 * @beacon_ies: the information elements from the last Beacon frame 859 * @len_beacon_ies: total length of the beacon_ies 860 * @proberesp_ies: the information elements from the last Probe Response frame 861 * @len_proberesp_ies: total length of the proberesp_ies 862 * @signal: signal strength value (type depends on the wiphy's signal_type) 863 * @free_priv: function pointer to free private data 864 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 865 */ 866 struct cfg80211_bss { 867 struct ieee80211_channel *channel; 868 869 u8 bssid[ETH_ALEN]; 870 u64 tsf; 871 u16 beacon_interval; 872 u16 capability; 873 u8 *information_elements; 874 size_t len_information_elements; 875 u8 *beacon_ies; 876 size_t len_beacon_ies; 877 u8 *proberesp_ies; 878 size_t len_proberesp_ies; 879 880 s32 signal; 881 882 void (*free_priv)(struct cfg80211_bss *bss); 883 u8 priv[0] __attribute__((__aligned__(sizeof(void *)))); 884 }; 885 886 /** 887 * ieee80211_bss_get_ie - find IE with given ID 888 * @bss: the bss to search 889 * @ie: the IE ID 890 * Returns %NULL if not found. 891 */ 892 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 893 894 895 /** 896 * struct cfg80211_crypto_settings - Crypto settings 897 * @wpa_versions: indicates which, if any, WPA versions are enabled 898 * (from enum nl80211_wpa_versions) 899 * @cipher_group: group key cipher suite (or 0 if unset) 900 * @n_ciphers_pairwise: number of AP supported unicast ciphers 901 * @ciphers_pairwise: unicast key cipher suites 902 * @n_akm_suites: number of AKM suites 903 * @akm_suites: AKM suites 904 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 905 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 906 * required to assume that the port is unauthorized until authorized by 907 * user space. Otherwise, port is marked authorized by default. 908 * @control_port_ethertype: the control port protocol that should be 909 * allowed through even on unauthorized ports 910 * @control_port_no_encrypt: TRUE to prevent encryption of control port 911 * protocol frames. 912 */ 913 struct cfg80211_crypto_settings { 914 u32 wpa_versions; 915 u32 cipher_group; 916 int n_ciphers_pairwise; 917 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 918 int n_akm_suites; 919 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 920 bool control_port; 921 __be16 control_port_ethertype; 922 bool control_port_no_encrypt; 923 }; 924 925 /** 926 * struct cfg80211_auth_request - Authentication request data 927 * 928 * This structure provides information needed to complete IEEE 802.11 929 * authentication. 930 * 931 * @bss: The BSS to authenticate with. 932 * @auth_type: Authentication type (algorithm) 933 * @ie: Extra IEs to add to Authentication frame or %NULL 934 * @ie_len: Length of ie buffer in octets 935 * @key_len: length of WEP key for shared key authentication 936 * @key_idx: index of WEP key for shared key authentication 937 * @key: WEP key for shared key authentication 938 * @local_state_change: This is a request for a local state only, i.e., no 939 * Authentication frame is to be transmitted and authentication state is 940 * to be changed without having to wait for a response from the peer STA 941 * (AP). 942 */ 943 struct cfg80211_auth_request { 944 struct cfg80211_bss *bss; 945 const u8 *ie; 946 size_t ie_len; 947 enum nl80211_auth_type auth_type; 948 const u8 *key; 949 u8 key_len, key_idx; 950 bool local_state_change; 951 }; 952 953 /** 954 * struct cfg80211_assoc_request - (Re)Association request data 955 * 956 * This structure provides information needed to complete IEEE 802.11 957 * (re)association. 958 * @bss: The BSS to associate with. 959 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 960 * @ie_len: Length of ie buffer in octets 961 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 962 * @crypto: crypto settings 963 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame 964 */ 965 struct cfg80211_assoc_request { 966 struct cfg80211_bss *bss; 967 const u8 *ie, *prev_bssid; 968 size_t ie_len; 969 struct cfg80211_crypto_settings crypto; 970 bool use_mfp; 971 }; 972 973 /** 974 * struct cfg80211_deauth_request - Deauthentication request data 975 * 976 * This structure provides information needed to complete IEEE 802.11 977 * deauthentication. 978 * 979 * @bss: the BSS to deauthenticate from 980 * @ie: Extra IEs to add to Deauthentication frame or %NULL 981 * @ie_len: Length of ie buffer in octets 982 * @reason_code: The reason code for the deauthentication 983 * @local_state_change: This is a request for a local state only, i.e., no 984 * Deauthentication frame is to be transmitted. 985 */ 986 struct cfg80211_deauth_request { 987 struct cfg80211_bss *bss; 988 const u8 *ie; 989 size_t ie_len; 990 u16 reason_code; 991 bool local_state_change; 992 }; 993 994 /** 995 * struct cfg80211_disassoc_request - Disassociation request data 996 * 997 * This structure provides information needed to complete IEEE 802.11 998 * disassocation. 999 * 1000 * @bss: the BSS to disassociate from 1001 * @ie: Extra IEs to add to Disassociation frame or %NULL 1002 * @ie_len: Length of ie buffer in octets 1003 * @reason_code: The reason code for the disassociation 1004 * @local_state_change: This is a request for a local state only, i.e., no 1005 * Disassociation frame is to be transmitted. 1006 */ 1007 struct cfg80211_disassoc_request { 1008 struct cfg80211_bss *bss; 1009 const u8 *ie; 1010 size_t ie_len; 1011 u16 reason_code; 1012 bool local_state_change; 1013 }; 1014 1015 /** 1016 * struct cfg80211_ibss_params - IBSS parameters 1017 * 1018 * This structure defines the IBSS parameters for the join_ibss() 1019 * method. 1020 * 1021 * @ssid: The SSID, will always be non-null. 1022 * @ssid_len: The length of the SSID, will always be non-zero. 1023 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1024 * search for IBSSs with a different BSSID. 1025 * @channel: The channel to use if no IBSS can be found to join. 1026 * @channel_fixed: The channel should be fixed -- do not search for 1027 * IBSSs to join on other channels. 1028 * @ie: information element(s) to include in the beacon 1029 * @ie_len: length of that 1030 * @beacon_interval: beacon interval to use 1031 * @privacy: this is a protected network, keys will be configured 1032 * after joining 1033 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1034 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1035 */ 1036 struct cfg80211_ibss_params { 1037 u8 *ssid; 1038 u8 *bssid; 1039 struct ieee80211_channel *channel; 1040 u8 *ie; 1041 u8 ssid_len, ie_len; 1042 u16 beacon_interval; 1043 u32 basic_rates; 1044 bool channel_fixed; 1045 bool privacy; 1046 int mcast_rate[IEEE80211_NUM_BANDS]; 1047 }; 1048 1049 /** 1050 * struct cfg80211_connect_params - Connection parameters 1051 * 1052 * This structure provides information needed to complete IEEE 802.11 1053 * authentication and association. 1054 * 1055 * @channel: The channel to use or %NULL if not specified (auto-select based 1056 * on scan results) 1057 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1058 * results) 1059 * @ssid: SSID 1060 * @ssid_len: Length of ssid in octets 1061 * @auth_type: Authentication type (algorithm) 1062 * @ie: IEs for association request 1063 * @ie_len: Length of assoc_ie in octets 1064 * @privacy: indicates whether privacy-enabled APs should be used 1065 * @crypto: crypto settings 1066 * @key_len: length of WEP key for shared key authentication 1067 * @key_idx: index of WEP key for shared key authentication 1068 * @key: WEP key for shared key authentication 1069 */ 1070 struct cfg80211_connect_params { 1071 struct ieee80211_channel *channel; 1072 u8 *bssid; 1073 u8 *ssid; 1074 size_t ssid_len; 1075 enum nl80211_auth_type auth_type; 1076 u8 *ie; 1077 size_t ie_len; 1078 bool privacy; 1079 struct cfg80211_crypto_settings crypto; 1080 const u8 *key; 1081 u8 key_len, key_idx; 1082 }; 1083 1084 /** 1085 * enum wiphy_params_flags - set_wiphy_params bitfield values 1086 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1087 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1088 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1089 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1090 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1091 */ 1092 enum wiphy_params_flags { 1093 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1094 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1095 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1096 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1097 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1098 }; 1099 1100 /* 1101 * cfg80211_bitrate_mask - masks for bitrate control 1102 */ 1103 struct cfg80211_bitrate_mask { 1104 struct { 1105 u32 legacy; 1106 /* TODO: add support for masking MCS rates; e.g.: */ 1107 /* u8 mcs[IEEE80211_HT_MCS_MASK_LEN]; */ 1108 } control[IEEE80211_NUM_BANDS]; 1109 }; 1110 /** 1111 * struct cfg80211_pmksa - PMK Security Association 1112 * 1113 * This structure is passed to the set/del_pmksa() method for PMKSA 1114 * caching. 1115 * 1116 * @bssid: The AP's BSSID. 1117 * @pmkid: The PMK material itself. 1118 */ 1119 struct cfg80211_pmksa { 1120 u8 *bssid; 1121 u8 *pmkid; 1122 }; 1123 1124 /** 1125 * struct cfg80211_wowlan_trig_pkt_pattern - packet pattern 1126 * @mask: bitmask where to match pattern and where to ignore bytes, 1127 * one bit per byte, in same format as nl80211 1128 * @pattern: bytes to match where bitmask is 1 1129 * @pattern_len: length of pattern (in bytes) 1130 * 1131 * Internal note: @mask and @pattern are allocated in one chunk of 1132 * memory, free @mask only! 1133 */ 1134 struct cfg80211_wowlan_trig_pkt_pattern { 1135 u8 *mask, *pattern; 1136 int pattern_len; 1137 }; 1138 1139 /** 1140 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 1141 * 1142 * This structure defines the enabled WoWLAN triggers for the device. 1143 * @any: wake up on any activity -- special trigger if device continues 1144 * operating as normal during suspend 1145 * @disconnect: wake up if getting disconnected 1146 * @magic_pkt: wake up on receiving magic packet 1147 * @patterns: wake up on receiving packet matching a pattern 1148 * @n_patterns: number of patterns 1149 */ 1150 struct cfg80211_wowlan { 1151 bool any, disconnect, magic_pkt; 1152 struct cfg80211_wowlan_trig_pkt_pattern *patterns; 1153 int n_patterns; 1154 }; 1155 1156 /** 1157 * struct cfg80211_gtk_rekey_data - rekey data 1158 * @kek: key encryption key 1159 * @kck: key confirmation key 1160 * @replay_ctr: replay counter 1161 */ 1162 struct cfg80211_gtk_rekey_data { 1163 u8 kek[NL80211_KEK_LEN]; 1164 u8 kck[NL80211_KCK_LEN]; 1165 u8 replay_ctr[NL80211_REPLAY_CTR_LEN]; 1166 }; 1167 1168 /** 1169 * struct cfg80211_ops - backend description for wireless configuration 1170 * 1171 * This struct is registered by fullmac card drivers and/or wireless stacks 1172 * in order to handle configuration requests on their interfaces. 1173 * 1174 * All callbacks except where otherwise noted should return 0 1175 * on success or a negative error code. 1176 * 1177 * All operations are currently invoked under rtnl for consistency with the 1178 * wireless extensions but this is subject to reevaluation as soon as this 1179 * code is used more widely and we have a first user without wext. 1180 * 1181 * @suspend: wiphy device needs to be suspended. The variable @wow will 1182 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 1183 * configured for the device. 1184 * @resume: wiphy device needs to be resumed 1185 * 1186 * @add_virtual_intf: create a new virtual interface with the given name, 1187 * must set the struct wireless_dev's iftype. Beware: You must create 1188 * the new netdev in the wiphy's network namespace! Returns the netdev, 1189 * or an ERR_PTR. 1190 * 1191 * @del_virtual_intf: remove the virtual interface determined by ifindex. 1192 * 1193 * @change_virtual_intf: change type/configuration of virtual interface, 1194 * keep the struct wireless_dev's iftype updated. 1195 * 1196 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 1197 * when adding a group key. 1198 * 1199 * @get_key: get information about the key with the given parameters. 1200 * @mac_addr will be %NULL when requesting information for a group 1201 * key. All pointers given to the @callback function need not be valid 1202 * after it returns. This function should return an error if it is 1203 * not possible to retrieve the key, -ENOENT if it doesn't exist. 1204 * 1205 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 1206 * and @key_index, return -ENOENT if the key doesn't exist. 1207 * 1208 * @set_default_key: set the default key on an interface 1209 * 1210 * @set_default_mgmt_key: set the default management frame key on an interface 1211 * 1212 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 1213 * 1214 * @add_beacon: Add a beacon with given parameters, @head, @interval 1215 * and @dtim_period will be valid, @tail is optional. 1216 * @set_beacon: Change the beacon parameters for an access point mode 1217 * interface. This should reject the call when no beacon has been 1218 * configured. 1219 * @del_beacon: Remove beacon configuration and stop sending the beacon. 1220 * 1221 * @add_station: Add a new station. 1222 * @del_station: Remove a station; @mac may be NULL to remove all stations. 1223 * @change_station: Modify a given station. 1224 * @get_station: get station information for the station identified by @mac 1225 * @dump_station: dump station callback -- resume dump at index @idx 1226 * 1227 * @add_mpath: add a fixed mesh path 1228 * @del_mpath: delete a given mesh path 1229 * @change_mpath: change a given mesh path 1230 * @get_mpath: get a mesh path for the given parameters 1231 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 1232 * @join_mesh: join the mesh network with the specified parameters 1233 * @leave_mesh: leave the current mesh network 1234 * 1235 * @get_mesh_config: Get the current mesh configuration 1236 * 1237 * @update_mesh_config: Update mesh parameters on a running mesh. 1238 * The mask is a bitfield which tells us which parameters to 1239 * set, and which to leave alone. 1240 * 1241 * @change_bss: Modify parameters for a given BSS. 1242 * 1243 * @set_txq_params: Set TX queue parameters 1244 * 1245 * @set_channel: Set channel for a given wireless interface. Some devices 1246 * may support multi-channel operation (by channel hopping) so cfg80211 1247 * doesn't verify much. Note, however, that the passed netdev may be 1248 * %NULL as well if the user requested changing the channel for the 1249 * device itself, or for a monitor interface. 1250 * 1251 * @scan: Request to do a scan. If returning zero, the scan request is given 1252 * the driver, and will be valid until passed to cfg80211_scan_done(). 1253 * For scan results, call cfg80211_inform_bss(); you can call this outside 1254 * the scan/scan_done bracket too. 1255 * 1256 * @auth: Request to authenticate with the specified peer 1257 * @assoc: Request to (re)associate with the specified peer 1258 * @deauth: Request to deauthenticate from the specified peer 1259 * @disassoc: Request to disassociate from the specified peer 1260 * 1261 * @connect: Connect to the ESS with the specified parameters. When connected, 1262 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 1263 * If the connection fails for some reason, call cfg80211_connect_result() 1264 * with the status from the AP. 1265 * @disconnect: Disconnect from the BSS/ESS. 1266 * 1267 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 1268 * cfg80211_ibss_joined(), also call that function when changing BSSID due 1269 * to a merge. 1270 * @leave_ibss: Leave the IBSS. 1271 * 1272 * @set_wiphy_params: Notify that wiphy parameters have changed; 1273 * @changed bitfield (see &enum wiphy_params_flags) describes which values 1274 * have changed. The actual parameter values are available in 1275 * struct wiphy. If returning an error, no value should be changed. 1276 * 1277 * @set_tx_power: set the transmit power according to the parameters 1278 * @get_tx_power: store the current TX power into the dbm variable; 1279 * return 0 if successful 1280 * 1281 * @set_wds_peer: set the WDS peer for a WDS interface 1282 * 1283 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 1284 * functions to adjust rfkill hw state 1285 * 1286 * @dump_survey: get site survey information. 1287 * 1288 * @remain_on_channel: Request the driver to remain awake on the specified 1289 * channel for the specified duration to complete an off-channel 1290 * operation (e.g., public action frame exchange). When the driver is 1291 * ready on the requested channel, it must indicate this with an event 1292 * notification by calling cfg80211_ready_on_channel(). 1293 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 1294 * This allows the operation to be terminated prior to timeout based on 1295 * the duration value. 1296 * @mgmt_tx: Transmit a management frame. 1297 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 1298 * frame on another channel 1299 * 1300 * @testmode_cmd: run a test mode command 1301 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 1302 * used by the function, but 0 and 1 must not be touched. Additionally, 1303 * return error codes other than -ENOBUFS and -ENOENT will terminate the 1304 * dump and return to userspace with an error, so be careful. If any data 1305 * was passed in from userspace then the data/len arguments will be present 1306 * and point to the data contained in %NL80211_ATTR_TESTDATA. 1307 * 1308 * @set_bitrate_mask: set the bitrate mask configuration 1309 * 1310 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 1311 * devices running firmwares capable of generating the (re) association 1312 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 1313 * @del_pmksa: Delete a cached PMKID. 1314 * @flush_pmksa: Flush all cached PMKIDs. 1315 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 1316 * allows the driver to adjust the dynamic ps timeout value. 1317 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 1318 * @sched_scan_start: Tell the driver to start a scheduled scan. 1319 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled 1320 * scan. The driver_initiated flag specifies whether the driver 1321 * itself has informed that the scan has stopped. 1322 * 1323 * @mgmt_frame_register: Notify driver that a management frame type was 1324 * registered. Note that this callback may not sleep, and cannot run 1325 * concurrently with itself. 1326 * 1327 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 1328 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 1329 * reject TX/RX mask combinations they cannot support by returning -EINVAL 1330 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 1331 * 1332 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 1333 * 1334 * @set_ringparam: Set tx and rx ring sizes. 1335 * 1336 * @get_ringparam: Get tx and rx ring current and maximum sizes. 1337 */ 1338 struct cfg80211_ops { 1339 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 1340 int (*resume)(struct wiphy *wiphy); 1341 1342 struct net_device * (*add_virtual_intf)(struct wiphy *wiphy, 1343 char *name, 1344 enum nl80211_iftype type, 1345 u32 *flags, 1346 struct vif_params *params); 1347 int (*del_virtual_intf)(struct wiphy *wiphy, struct net_device *dev); 1348 int (*change_virtual_intf)(struct wiphy *wiphy, 1349 struct net_device *dev, 1350 enum nl80211_iftype type, u32 *flags, 1351 struct vif_params *params); 1352 1353 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 1354 u8 key_index, bool pairwise, const u8 *mac_addr, 1355 struct key_params *params); 1356 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 1357 u8 key_index, bool pairwise, const u8 *mac_addr, 1358 void *cookie, 1359 void (*callback)(void *cookie, struct key_params*)); 1360 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 1361 u8 key_index, bool pairwise, const u8 *mac_addr); 1362 int (*set_default_key)(struct wiphy *wiphy, 1363 struct net_device *netdev, 1364 u8 key_index, bool unicast, bool multicast); 1365 int (*set_default_mgmt_key)(struct wiphy *wiphy, 1366 struct net_device *netdev, 1367 u8 key_index); 1368 1369 int (*add_beacon)(struct wiphy *wiphy, struct net_device *dev, 1370 struct beacon_parameters *info); 1371 int (*set_beacon)(struct wiphy *wiphy, struct net_device *dev, 1372 struct beacon_parameters *info); 1373 int (*del_beacon)(struct wiphy *wiphy, struct net_device *dev); 1374 1375 1376 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 1377 u8 *mac, struct station_parameters *params); 1378 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 1379 u8 *mac); 1380 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 1381 u8 *mac, struct station_parameters *params); 1382 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 1383 u8 *mac, struct station_info *sinfo); 1384 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 1385 int idx, u8 *mac, struct station_info *sinfo); 1386 1387 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 1388 u8 *dst, u8 *next_hop); 1389 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 1390 u8 *dst); 1391 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 1392 u8 *dst, u8 *next_hop); 1393 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 1394 u8 *dst, u8 *next_hop, 1395 struct mpath_info *pinfo); 1396 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 1397 int idx, u8 *dst, u8 *next_hop, 1398 struct mpath_info *pinfo); 1399 int (*get_mesh_config)(struct wiphy *wiphy, 1400 struct net_device *dev, 1401 struct mesh_config *conf); 1402 int (*update_mesh_config)(struct wiphy *wiphy, 1403 struct net_device *dev, u32 mask, 1404 const struct mesh_config *nconf); 1405 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 1406 const struct mesh_config *conf, 1407 const struct mesh_setup *setup); 1408 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 1409 1410 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 1411 struct bss_parameters *params); 1412 1413 int (*set_txq_params)(struct wiphy *wiphy, 1414 struct ieee80211_txq_params *params); 1415 1416 int (*set_channel)(struct wiphy *wiphy, struct net_device *dev, 1417 struct ieee80211_channel *chan, 1418 enum nl80211_channel_type channel_type); 1419 1420 int (*scan)(struct wiphy *wiphy, struct net_device *dev, 1421 struct cfg80211_scan_request *request); 1422 1423 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 1424 struct cfg80211_auth_request *req); 1425 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 1426 struct cfg80211_assoc_request *req); 1427 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 1428 struct cfg80211_deauth_request *req, 1429 void *cookie); 1430 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 1431 struct cfg80211_disassoc_request *req, 1432 void *cookie); 1433 1434 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 1435 struct cfg80211_connect_params *sme); 1436 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 1437 u16 reason_code); 1438 1439 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 1440 struct cfg80211_ibss_params *params); 1441 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 1442 1443 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 1444 1445 int (*set_tx_power)(struct wiphy *wiphy, 1446 enum nl80211_tx_power_setting type, int mbm); 1447 int (*get_tx_power)(struct wiphy *wiphy, int *dbm); 1448 1449 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 1450 const u8 *addr); 1451 1452 void (*rfkill_poll)(struct wiphy *wiphy); 1453 1454 #ifdef CONFIG_NL80211_TESTMODE 1455 int (*testmode_cmd)(struct wiphy *wiphy, void *data, int len); 1456 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 1457 struct netlink_callback *cb, 1458 void *data, int len); 1459 #endif 1460 1461 int (*set_bitrate_mask)(struct wiphy *wiphy, 1462 struct net_device *dev, 1463 const u8 *peer, 1464 const struct cfg80211_bitrate_mask *mask); 1465 1466 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 1467 int idx, struct survey_info *info); 1468 1469 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1470 struct cfg80211_pmksa *pmksa); 1471 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 1472 struct cfg80211_pmksa *pmksa); 1473 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 1474 1475 int (*remain_on_channel)(struct wiphy *wiphy, 1476 struct net_device *dev, 1477 struct ieee80211_channel *chan, 1478 enum nl80211_channel_type channel_type, 1479 unsigned int duration, 1480 u64 *cookie); 1481 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 1482 struct net_device *dev, 1483 u64 cookie); 1484 1485 int (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev, 1486 struct ieee80211_channel *chan, bool offchan, 1487 enum nl80211_channel_type channel_type, 1488 bool channel_type_valid, unsigned int wait, 1489 const u8 *buf, size_t len, u64 *cookie); 1490 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 1491 struct net_device *dev, 1492 u64 cookie); 1493 1494 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 1495 bool enabled, int timeout); 1496 1497 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 1498 struct net_device *dev, 1499 s32 rssi_thold, u32 rssi_hyst); 1500 1501 void (*mgmt_frame_register)(struct wiphy *wiphy, 1502 struct net_device *dev, 1503 u16 frame_type, bool reg); 1504 1505 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 1506 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 1507 1508 int (*set_ringparam)(struct wiphy *wiphy, u32 tx, u32 rx); 1509 void (*get_ringparam)(struct wiphy *wiphy, 1510 u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); 1511 1512 int (*sched_scan_start)(struct wiphy *wiphy, 1513 struct net_device *dev, 1514 struct cfg80211_sched_scan_request *request); 1515 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 1516 1517 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 1518 struct cfg80211_gtk_rekey_data *data); 1519 }; 1520 1521 /* 1522 * wireless hardware and networking interfaces structures 1523 * and registration/helper functions 1524 */ 1525 1526 /** 1527 * enum wiphy_flags - wiphy capability flags 1528 * 1529 * @WIPHY_FLAG_CUSTOM_REGULATORY: tells us the driver for this device 1530 * has its own custom regulatory domain and cannot identify the 1531 * ISO / IEC 3166 alpha2 it belongs to. When this is enabled 1532 * we will disregard the first regulatory hint (when the 1533 * initiator is %REGDOM_SET_BY_CORE). 1534 * @WIPHY_FLAG_STRICT_REGULATORY: tells us the driver for this device will 1535 * ignore regulatory domain settings until it gets its own regulatory 1536 * domain via its regulatory_hint() unless the regulatory hint is 1537 * from a country IE. After its gets its own regulatory domain it will 1538 * only allow further regulatory domain settings to further enhance 1539 * compliance. For example if channel 13 and 14 are disabled by this 1540 * regulatory domain no user regulatory domain can enable these channels 1541 * at a later time. This can be used for devices which do not have 1542 * calibration information guaranteed for frequencies or settings 1543 * outside of its regulatory domain. 1544 * @WIPHY_FLAG_DISABLE_BEACON_HINTS: enable this if your driver needs to ensure 1545 * that passive scan flags and beaconing flags may not be lifted by 1546 * cfg80211 due to regulatory beacon hints. For more information on beacon 1547 * hints read the documenation for regulatory_hint_found_beacon() 1548 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 1549 * wiphy at all 1550 * @WIPHY_FLAG_ENFORCE_COMBINATIONS: Set this flag to enforce interface 1551 * combinations for this device. This flag is used for backward 1552 * compatibility only until all drivers advertise combinations and 1553 * they will always be enforced. 1554 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 1555 * by default -- this flag will be set depending on the kernel's default 1556 * on wiphy_new(), but can be changed by the driver if it has a good 1557 * reason to override the default 1558 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 1559 * on a VLAN interface) 1560 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 1561 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 1562 * control port protocol ethertype. The device also honours the 1563 * control_port_no_encrypt flag. 1564 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 1565 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 1566 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 1567 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 1568 */ 1569 enum wiphy_flags { 1570 WIPHY_FLAG_CUSTOM_REGULATORY = BIT(0), 1571 WIPHY_FLAG_STRICT_REGULATORY = BIT(1), 1572 WIPHY_FLAG_DISABLE_BEACON_HINTS = BIT(2), 1573 WIPHY_FLAG_NETNS_OK = BIT(3), 1574 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 1575 WIPHY_FLAG_4ADDR_AP = BIT(5), 1576 WIPHY_FLAG_4ADDR_STATION = BIT(6), 1577 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 1578 WIPHY_FLAG_IBSS_RSN = BIT(8), 1579 WIPHY_FLAG_MESH_AUTH = BIT(10), 1580 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 1581 WIPHY_FLAG_ENFORCE_COMBINATIONS = BIT(12), 1582 }; 1583 1584 /** 1585 * struct ieee80211_iface_limit - limit on certain interface types 1586 * @max: maximum number of interfaces of these types 1587 * @types: interface types (bits) 1588 */ 1589 struct ieee80211_iface_limit { 1590 u16 max; 1591 u16 types; 1592 }; 1593 1594 /** 1595 * struct ieee80211_iface_combination - possible interface combination 1596 * @limits: limits for the given interface types 1597 * @n_limits: number of limitations 1598 * @num_different_channels: can use up to this many different channels 1599 * @max_interfaces: maximum number of interfaces in total allowed in this 1600 * group 1601 * @beacon_int_infra_match: In this combination, the beacon intervals 1602 * between infrastructure and AP types must match. This is required 1603 * only in special cases. 1604 * 1605 * These examples can be expressed as follows: 1606 * 1607 * Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 1608 * 1609 * struct ieee80211_iface_limit limits1[] = { 1610 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1611 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 1612 * }; 1613 * struct ieee80211_iface_combination combination1 = { 1614 * .limits = limits1, 1615 * .n_limits = ARRAY_SIZE(limits1), 1616 * .max_interfaces = 2, 1617 * .beacon_int_infra_match = true, 1618 * }; 1619 * 1620 * 1621 * Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 1622 * 1623 * struct ieee80211_iface_limit limits2[] = { 1624 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 1625 * BIT(NL80211_IFTYPE_P2P_GO), }, 1626 * }; 1627 * struct ieee80211_iface_combination combination2 = { 1628 * .limits = limits2, 1629 * .n_limits = ARRAY_SIZE(limits2), 1630 * .max_interfaces = 8, 1631 * .num_different_channels = 1, 1632 * }; 1633 * 1634 * 1635 * Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 1636 * This allows for an infrastructure connection and three P2P connections. 1637 * 1638 * struct ieee80211_iface_limit limits3[] = { 1639 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 1640 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 1641 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 1642 * }; 1643 * struct ieee80211_iface_combination combination3 = { 1644 * .limits = limits3, 1645 * .n_limits = ARRAY_SIZE(limits3), 1646 * .max_interfaces = 4, 1647 * .num_different_channels = 2, 1648 * }; 1649 */ 1650 struct ieee80211_iface_combination { 1651 const struct ieee80211_iface_limit *limits; 1652 u32 num_different_channels; 1653 u16 max_interfaces; 1654 u8 n_limits; 1655 bool beacon_int_infra_match; 1656 }; 1657 1658 struct mac_address { 1659 u8 addr[ETH_ALEN]; 1660 }; 1661 1662 struct ieee80211_txrx_stypes { 1663 u16 tx, rx; 1664 }; 1665 1666 /** 1667 * enum wiphy_wowlan_support_flags - WoWLAN support flags 1668 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 1669 * trigger that keeps the device operating as-is and 1670 * wakes up the host on any activity, for example a 1671 * received packet that passed filtering; note that the 1672 * packet should be preserved in that case 1673 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 1674 * (see nl80211.h) 1675 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 1676 */ 1677 enum wiphy_wowlan_support_flags { 1678 WIPHY_WOWLAN_ANY = BIT(0), 1679 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 1680 WIPHY_WOWLAN_DISCONNECT = BIT(2), 1681 }; 1682 1683 /** 1684 * struct wiphy_wowlan_support - WoWLAN support data 1685 * @flags: see &enum wiphy_wowlan_support_flags 1686 * @n_patterns: number of supported wakeup patterns 1687 * (see nl80211.h for the pattern definition) 1688 * @pattern_max_len: maximum length of each pattern 1689 * @pattern_min_len: minimum length of each pattern 1690 */ 1691 struct wiphy_wowlan_support { 1692 u32 flags; 1693 int n_patterns; 1694 int pattern_max_len; 1695 int pattern_min_len; 1696 }; 1697 1698 /** 1699 * struct wiphy - wireless hardware description 1700 * @reg_notifier: the driver's regulatory notification callback, 1701 * note that if your driver uses wiphy_apply_custom_regulatory() 1702 * the reg_notifier's request can be passed as NULL 1703 * @regd: the driver's regulatory domain, if one was requested via 1704 * the regulatory_hint() API. This can be used by the driver 1705 * on the reg_notifier() if it chooses to ignore future 1706 * regulatory domain changes caused by other drivers. 1707 * @signal_type: signal type reported in &struct cfg80211_bss. 1708 * @cipher_suites: supported cipher suites 1709 * @n_cipher_suites: number of supported cipher suites 1710 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 1711 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 1712 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 1713 * -1 = fragmentation disabled, only odd values >= 256 used 1714 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 1715 * @_net: the network namespace this wiphy currently lives in 1716 * @perm_addr: permanent MAC address of this device 1717 * @addr_mask: If the device supports multiple MAC addresses by masking, 1718 * set this to a mask with variable bits set to 1, e.g. if the last 1719 * four bits are variable then set it to 00:...:00:0f. The actual 1720 * variable bits shall be determined by the interfaces added, with 1721 * interfaces not matching the mask being rejected to be brought up. 1722 * @n_addresses: number of addresses in @addresses. 1723 * @addresses: If the device has more than one address, set this pointer 1724 * to a list of addresses (6 bytes each). The first one will be used 1725 * by default for perm_addr. In this case, the mask should be set to 1726 * all-zeroes. In this case it is assumed that the device can handle 1727 * the same number of arbitrary MAC addresses. 1728 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 1729 * automatically on wiphy renames 1730 * @dev: (virtual) struct device for this wiphy 1731 * @wext: wireless extension handlers 1732 * @priv: driver private data (sized according to wiphy_new() parameter) 1733 * @interface_modes: bitmask of interfaces types valid for this wiphy, 1734 * must be set by driver 1735 * @iface_combinations: Valid interface combinations array, should not 1736 * list single interface types. 1737 * @n_iface_combinations: number of entries in @iface_combinations array. 1738 * @software_iftypes: bitmask of software interface types, these are not 1739 * subject to any restrictions since they are purely managed in SW. 1740 * @flags: wiphy flags, see &enum wiphy_flags 1741 * @bss_priv_size: each BSS struct has private data allocated with it, 1742 * this variable determines its size 1743 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 1744 * any given scan 1745 * @max_scan_ie_len: maximum length of user-controlled IEs device can 1746 * add to probe request frames transmitted during a scan, must not 1747 * include fixed IEs like supported rates 1748 * @coverage_class: current coverage class 1749 * @fw_version: firmware version for ethtool reporting 1750 * @hw_version: hardware version for ethtool reporting 1751 * @max_num_pmkids: maximum number of PMKIDs supported by device 1752 * @privid: a pointer that drivers can use to identify if an arbitrary 1753 * wiphy is theirs, e.g. in global notifiers 1754 * @bands: information about bands/channels supported by this device 1755 * 1756 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 1757 * transmitted through nl80211, points to an array indexed by interface 1758 * type 1759 * 1760 * @available_antennas_tx: bitmap of antennas which are available to be 1761 * configured as TX antennas. Antenna configuration commands will be 1762 * rejected unless this or @available_antennas_rx is set. 1763 * 1764 * @available_antennas_rx: bitmap of antennas which are available to be 1765 * configured as RX antennas. Antenna configuration commands will be 1766 * rejected unless this or @available_antennas_tx is set. 1767 * 1768 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 1769 * may request, if implemented. 1770 * 1771 * @wowlan: WoWLAN support information 1772 */ 1773 struct wiphy { 1774 /* assign these fields before you register the wiphy */ 1775 1776 /* permanent MAC address(es) */ 1777 u8 perm_addr[ETH_ALEN]; 1778 u8 addr_mask[ETH_ALEN]; 1779 1780 struct mac_address *addresses; 1781 1782 const struct ieee80211_txrx_stypes *mgmt_stypes; 1783 1784 const struct ieee80211_iface_combination *iface_combinations; 1785 int n_iface_combinations; 1786 u16 software_iftypes; 1787 1788 u16 n_addresses; 1789 1790 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 1791 u16 interface_modes; 1792 1793 u32 flags; 1794 1795 enum cfg80211_signal_type signal_type; 1796 1797 int bss_priv_size; 1798 u8 max_scan_ssids; 1799 u16 max_scan_ie_len; 1800 1801 int n_cipher_suites; 1802 const u32 *cipher_suites; 1803 1804 u8 retry_short; 1805 u8 retry_long; 1806 u32 frag_threshold; 1807 u32 rts_threshold; 1808 u8 coverage_class; 1809 1810 char fw_version[ETHTOOL_BUSINFO_LEN]; 1811 u32 hw_version; 1812 1813 struct wiphy_wowlan_support wowlan; 1814 1815 u16 max_remain_on_channel_duration; 1816 1817 u8 max_num_pmkids; 1818 1819 u32 available_antennas_tx; 1820 u32 available_antennas_rx; 1821 1822 /* If multiple wiphys are registered and you're handed e.g. 1823 * a regular netdev with assigned ieee80211_ptr, you won't 1824 * know whether it points to a wiphy your driver has registered 1825 * or not. Assign this to something global to your driver to 1826 * help determine whether you own this wiphy or not. */ 1827 const void *privid; 1828 1829 struct ieee80211_supported_band *bands[IEEE80211_NUM_BANDS]; 1830 1831 /* Lets us get back the wiphy on the callback */ 1832 int (*reg_notifier)(struct wiphy *wiphy, 1833 struct regulatory_request *request); 1834 1835 /* fields below are read-only, assigned by cfg80211 */ 1836 1837 const struct ieee80211_regdomain *regd; 1838 1839 /* the item in /sys/class/ieee80211/ points to this, 1840 * you need use set_wiphy_dev() (see below) */ 1841 struct device dev; 1842 1843 /* dir in debugfs: ieee80211/<wiphyname> */ 1844 struct dentry *debugfsdir; 1845 1846 #ifdef CONFIG_NET_NS 1847 /* the network namespace this phy lives in currently */ 1848 struct net *_net; 1849 #endif 1850 1851 #ifdef CONFIG_CFG80211_WEXT 1852 const struct iw_handler_def *wext; 1853 #endif 1854 1855 char priv[0] __attribute__((__aligned__(NETDEV_ALIGN))); 1856 }; 1857 1858 static inline struct net *wiphy_net(struct wiphy *wiphy) 1859 { 1860 return read_pnet(&wiphy->_net); 1861 } 1862 1863 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 1864 { 1865 write_pnet(&wiphy->_net, net); 1866 } 1867 1868 /** 1869 * wiphy_priv - return priv from wiphy 1870 * 1871 * @wiphy: the wiphy whose priv pointer to return 1872 */ 1873 static inline void *wiphy_priv(struct wiphy *wiphy) 1874 { 1875 BUG_ON(!wiphy); 1876 return &wiphy->priv; 1877 } 1878 1879 /** 1880 * priv_to_wiphy - return the wiphy containing the priv 1881 * 1882 * @priv: a pointer previously returned by wiphy_priv 1883 */ 1884 static inline struct wiphy *priv_to_wiphy(void *priv) 1885 { 1886 BUG_ON(!priv); 1887 return container_of(priv, struct wiphy, priv); 1888 } 1889 1890 /** 1891 * set_wiphy_dev - set device pointer for wiphy 1892 * 1893 * @wiphy: The wiphy whose device to bind 1894 * @dev: The device to parent it to 1895 */ 1896 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 1897 { 1898 wiphy->dev.parent = dev; 1899 } 1900 1901 /** 1902 * wiphy_dev - get wiphy dev pointer 1903 * 1904 * @wiphy: The wiphy whose device struct to look up 1905 */ 1906 static inline struct device *wiphy_dev(struct wiphy *wiphy) 1907 { 1908 return wiphy->dev.parent; 1909 } 1910 1911 /** 1912 * wiphy_name - get wiphy name 1913 * 1914 * @wiphy: The wiphy whose name to return 1915 */ 1916 static inline const char *wiphy_name(const struct wiphy *wiphy) 1917 { 1918 return dev_name(&wiphy->dev); 1919 } 1920 1921 /** 1922 * wiphy_new - create a new wiphy for use with cfg80211 1923 * 1924 * @ops: The configuration operations for this device 1925 * @sizeof_priv: The size of the private area to allocate 1926 * 1927 * Create a new wiphy and associate the given operations with it. 1928 * @sizeof_priv bytes are allocated for private use. 1929 * 1930 * The returned pointer must be assigned to each netdev's 1931 * ieee80211_ptr for proper operation. 1932 */ 1933 struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv); 1934 1935 /** 1936 * wiphy_register - register a wiphy with cfg80211 1937 * 1938 * @wiphy: The wiphy to register. 1939 * 1940 * Returns a non-negative wiphy index or a negative error code. 1941 */ 1942 extern int wiphy_register(struct wiphy *wiphy); 1943 1944 /** 1945 * wiphy_unregister - deregister a wiphy from cfg80211 1946 * 1947 * @wiphy: The wiphy to unregister. 1948 * 1949 * After this call, no more requests can be made with this priv 1950 * pointer, but the call may sleep to wait for an outstanding 1951 * request that is being handled. 1952 */ 1953 extern void wiphy_unregister(struct wiphy *wiphy); 1954 1955 /** 1956 * wiphy_free - free wiphy 1957 * 1958 * @wiphy: The wiphy to free 1959 */ 1960 extern void wiphy_free(struct wiphy *wiphy); 1961 1962 /* internal structs */ 1963 struct cfg80211_conn; 1964 struct cfg80211_internal_bss; 1965 struct cfg80211_cached_keys; 1966 1967 #define MAX_AUTH_BSSES 4 1968 1969 /** 1970 * struct wireless_dev - wireless per-netdev state 1971 * 1972 * This structure must be allocated by the driver/stack 1973 * that uses the ieee80211_ptr field in struct net_device 1974 * (this is intentional so it can be allocated along with 1975 * the netdev.) 1976 * 1977 * @wiphy: pointer to hardware description 1978 * @iftype: interface type 1979 * @list: (private) Used to collect the interfaces 1980 * @netdev: (private) Used to reference back to the netdev 1981 * @current_bss: (private) Used by the internal configuration code 1982 * @channel: (private) Used by the internal configuration code to track 1983 * user-set AP, monitor and WDS channels for wireless extensions 1984 * @bssid: (private) Used by the internal configuration code 1985 * @ssid: (private) Used by the internal configuration code 1986 * @ssid_len: (private) Used by the internal configuration code 1987 * @mesh_id_len: (private) Used by the internal configuration code 1988 * @mesh_id_up_len: (private) Used by the internal configuration code 1989 * @wext: (private) Used by the internal wireless extensions compat code 1990 * @use_4addr: indicates 4addr mode is used on this interface, must be 1991 * set by driver (if supported) on add_interface BEFORE registering the 1992 * netdev and may otherwise be used by driver read-only, will be update 1993 * by cfg80211 on change_interface 1994 * @mgmt_registrations: list of registrations for management frames 1995 * @mgmt_registrations_lock: lock for the list 1996 * @mtx: mutex used to lock data in this struct 1997 * @cleanup_work: work struct used for cleanup that can't be done directly 1998 * @beacon_interval: beacon interval used on this device for transmitting 1999 * beacons, 0 when not valid 2000 */ 2001 struct wireless_dev { 2002 struct wiphy *wiphy; 2003 enum nl80211_iftype iftype; 2004 2005 /* the remainder of this struct should be private to cfg80211 */ 2006 struct list_head list; 2007 struct net_device *netdev; 2008 2009 struct list_head mgmt_registrations; 2010 spinlock_t mgmt_registrations_lock; 2011 2012 struct mutex mtx; 2013 2014 struct work_struct cleanup_work; 2015 2016 bool use_4addr; 2017 2018 /* currently used for IBSS and SME - might be rearranged later */ 2019 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2020 u8 ssid_len, mesh_id_len, mesh_id_up_len; 2021 enum { 2022 CFG80211_SME_IDLE, 2023 CFG80211_SME_CONNECTING, 2024 CFG80211_SME_CONNECTED, 2025 } sme_state; 2026 struct cfg80211_conn *conn; 2027 struct cfg80211_cached_keys *connect_keys; 2028 2029 struct list_head event_list; 2030 spinlock_t event_lock; 2031 2032 struct cfg80211_internal_bss *authtry_bsses[MAX_AUTH_BSSES]; 2033 struct cfg80211_internal_bss *auth_bsses[MAX_AUTH_BSSES]; 2034 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 2035 struct ieee80211_channel *channel; 2036 2037 bool ps; 2038 int ps_timeout; 2039 2040 int beacon_interval; 2041 2042 #ifdef CONFIG_CFG80211_WEXT 2043 /* wext data */ 2044 struct { 2045 struct cfg80211_ibss_params ibss; 2046 struct cfg80211_connect_params connect; 2047 struct cfg80211_cached_keys *keys; 2048 u8 *ie; 2049 size_t ie_len; 2050 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 2051 u8 ssid[IEEE80211_MAX_SSID_LEN]; 2052 s8 default_key, default_mgmt_key; 2053 bool prev_bssid_valid; 2054 } wext; 2055 #endif 2056 }; 2057 2058 /** 2059 * wdev_priv - return wiphy priv from wireless_dev 2060 * 2061 * @wdev: The wireless device whose wiphy's priv pointer to return 2062 */ 2063 static inline void *wdev_priv(struct wireless_dev *wdev) 2064 { 2065 BUG_ON(!wdev); 2066 return wiphy_priv(wdev->wiphy); 2067 } 2068 2069 /** 2070 * DOC: Utility functions 2071 * 2072 * cfg80211 offers a number of utility functions that can be useful. 2073 */ 2074 2075 /** 2076 * ieee80211_channel_to_frequency - convert channel number to frequency 2077 * @chan: channel number 2078 * @band: band, necessary due to channel number overlap 2079 */ 2080 extern int ieee80211_channel_to_frequency(int chan, enum ieee80211_band band); 2081 2082 /** 2083 * ieee80211_frequency_to_channel - convert frequency to channel number 2084 * @freq: center frequency 2085 */ 2086 extern int ieee80211_frequency_to_channel(int freq); 2087 2088 /* 2089 * Name indirection necessary because the ieee80211 code also has 2090 * a function named "ieee80211_get_channel", so if you include 2091 * cfg80211's header file you get cfg80211's version, if you try 2092 * to include both header files you'll (rightfully!) get a symbol 2093 * clash. 2094 */ 2095 extern struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 2096 int freq); 2097 /** 2098 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 2099 * @wiphy: the struct wiphy to get the channel for 2100 * @freq: the center frequency of the channel 2101 */ 2102 static inline struct ieee80211_channel * 2103 ieee80211_get_channel(struct wiphy *wiphy, int freq) 2104 { 2105 return __ieee80211_get_channel(wiphy, freq); 2106 } 2107 2108 /** 2109 * ieee80211_get_response_rate - get basic rate for a given rate 2110 * 2111 * @sband: the band to look for rates in 2112 * @basic_rates: bitmap of basic rates 2113 * @bitrate: the bitrate for which to find the basic rate 2114 * 2115 * This function returns the basic rate corresponding to a given 2116 * bitrate, that is the next lower bitrate contained in the basic 2117 * rate map, which is, for this function, given as a bitmap of 2118 * indices of rates in the band's bitrate table. 2119 */ 2120 struct ieee80211_rate * 2121 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 2122 u32 basic_rates, int bitrate); 2123 2124 /* 2125 * Radiotap parsing functions -- for controlled injection support 2126 * 2127 * Implemented in net/wireless/radiotap.c 2128 * Documentation in Documentation/networking/radiotap-headers.txt 2129 */ 2130 2131 struct radiotap_align_size { 2132 uint8_t align:4, size:4; 2133 }; 2134 2135 struct ieee80211_radiotap_namespace { 2136 const struct radiotap_align_size *align_size; 2137 int n_bits; 2138 uint32_t oui; 2139 uint8_t subns; 2140 }; 2141 2142 struct ieee80211_radiotap_vendor_namespaces { 2143 const struct ieee80211_radiotap_namespace *ns; 2144 int n_ns; 2145 }; 2146 2147 /** 2148 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 2149 * @this_arg_index: index of current arg, valid after each successful call 2150 * to ieee80211_radiotap_iterator_next() 2151 * @this_arg: pointer to current radiotap arg; it is valid after each 2152 * call to ieee80211_radiotap_iterator_next() but also after 2153 * ieee80211_radiotap_iterator_init() where it will point to 2154 * the beginning of the actual data portion 2155 * @this_arg_size: length of the current arg, for convenience 2156 * @current_namespace: pointer to the current namespace definition 2157 * (or internally %NULL if the current namespace is unknown) 2158 * @is_radiotap_ns: indicates whether the current namespace is the default 2159 * radiotap namespace or not 2160 * 2161 * @_rtheader: pointer to the radiotap header we are walking through 2162 * @_max_length: length of radiotap header in cpu byte ordering 2163 * @_arg_index: next argument index 2164 * @_arg: next argument pointer 2165 * @_next_bitmap: internal pointer to next present u32 2166 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 2167 * @_vns: vendor namespace definitions 2168 * @_next_ns_data: beginning of the next namespace's data 2169 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 2170 * next bitmap word 2171 * 2172 * Describes the radiotap parser state. Fields prefixed with an underscore 2173 * must not be used by users of the parser, only by the parser internally. 2174 */ 2175 2176 struct ieee80211_radiotap_iterator { 2177 struct ieee80211_radiotap_header *_rtheader; 2178 const struct ieee80211_radiotap_vendor_namespaces *_vns; 2179 const struct ieee80211_radiotap_namespace *current_namespace; 2180 2181 unsigned char *_arg, *_next_ns_data; 2182 __le32 *_next_bitmap; 2183 2184 unsigned char *this_arg; 2185 int this_arg_index; 2186 int this_arg_size; 2187 2188 int is_radiotap_ns; 2189 2190 int _max_length; 2191 int _arg_index; 2192 uint32_t _bitmap_shifter; 2193 int _reset_on_ext; 2194 }; 2195 2196 extern int ieee80211_radiotap_iterator_init( 2197 struct ieee80211_radiotap_iterator *iterator, 2198 struct ieee80211_radiotap_header *radiotap_header, 2199 int max_length, const struct ieee80211_radiotap_vendor_namespaces *vns); 2200 2201 extern int ieee80211_radiotap_iterator_next( 2202 struct ieee80211_radiotap_iterator *iterator); 2203 2204 2205 extern const unsigned char rfc1042_header[6]; 2206 extern const unsigned char bridge_tunnel_header[6]; 2207 2208 /** 2209 * ieee80211_get_hdrlen_from_skb - get header length from data 2210 * 2211 * Given an skb with a raw 802.11 header at the data pointer this function 2212 * returns the 802.11 header length in bytes (not including encryption 2213 * headers). If the data in the sk_buff is too short to contain a valid 802.11 2214 * header the function returns 0. 2215 * 2216 * @skb: the frame 2217 */ 2218 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 2219 2220 /** 2221 * ieee80211_hdrlen - get header length in bytes from frame control 2222 * @fc: frame control field in little-endian format 2223 */ 2224 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 2225 2226 /** 2227 * DOC: Data path helpers 2228 * 2229 * In addition to generic utilities, cfg80211 also offers 2230 * functions that help implement the data path for devices 2231 * that do not do the 802.11/802.3 conversion on the device. 2232 */ 2233 2234 /** 2235 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 2236 * @skb: the 802.11 data frame 2237 * @addr: the device MAC address 2238 * @iftype: the virtual interface type 2239 */ 2240 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 2241 enum nl80211_iftype iftype); 2242 2243 /** 2244 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 2245 * @skb: the 802.3 frame 2246 * @addr: the device MAC address 2247 * @iftype: the virtual interface type 2248 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 2249 * @qos: build 802.11 QoS data frame 2250 */ 2251 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 2252 enum nl80211_iftype iftype, u8 *bssid, bool qos); 2253 2254 /** 2255 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 2256 * 2257 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 2258 * 802.3 frames. The @list will be empty if the decode fails. The 2259 * @skb is consumed after the function returns. 2260 * 2261 * @skb: The input IEEE 802.11n A-MSDU frame. 2262 * @list: The output list of 802.3 frames. It must be allocated and 2263 * initialized by by the caller. 2264 * @addr: The device MAC address. 2265 * @iftype: The device interface type. 2266 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 2267 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 2268 */ 2269 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 2270 const u8 *addr, enum nl80211_iftype iftype, 2271 const unsigned int extra_headroom, 2272 bool has_80211_header); 2273 2274 /** 2275 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 2276 * @skb: the data frame 2277 */ 2278 unsigned int cfg80211_classify8021d(struct sk_buff *skb); 2279 2280 /** 2281 * cfg80211_find_ie - find information element in data 2282 * 2283 * @eid: element ID 2284 * @ies: data consisting of IEs 2285 * @len: length of data 2286 * 2287 * This function will return %NULL if the element ID could 2288 * not be found or if the element is invalid (claims to be 2289 * longer than the given data), or a pointer to the first byte 2290 * of the requested element, that is the byte containing the 2291 * element ID. There are no checks on the element length 2292 * other than having to fit into the given data. 2293 */ 2294 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 2295 2296 /** 2297 * DOC: Regulatory enforcement infrastructure 2298 * 2299 * TODO 2300 */ 2301 2302 /** 2303 * regulatory_hint - driver hint to the wireless core a regulatory domain 2304 * @wiphy: the wireless device giving the hint (used only for reporting 2305 * conflicts) 2306 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 2307 * should be in. If @rd is set this should be NULL. Note that if you 2308 * set this to NULL you should still set rd->alpha2 to some accepted 2309 * alpha2. 2310 * 2311 * Wireless drivers can use this function to hint to the wireless core 2312 * what it believes should be the current regulatory domain by 2313 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 2314 * domain should be in or by providing a completely build regulatory domain. 2315 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 2316 * for a regulatory domain structure for the respective country. 2317 * 2318 * The wiphy must have been registered to cfg80211 prior to this call. 2319 * For cfg80211 drivers this means you must first use wiphy_register(), 2320 * for mac80211 drivers you must first use ieee80211_register_hw(). 2321 * 2322 * Drivers should check the return value, its possible you can get 2323 * an -ENOMEM. 2324 */ 2325 extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 2326 2327 /** 2328 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 2329 * @wiphy: the wireless device we want to process the regulatory domain on 2330 * @regd: the custom regulatory domain to use for this wiphy 2331 * 2332 * Drivers can sometimes have custom regulatory domains which do not apply 2333 * to a specific country. Drivers can use this to apply such custom regulatory 2334 * domains. This routine must be called prior to wiphy registration. The 2335 * custom regulatory domain will be trusted completely and as such previous 2336 * default channel settings will be disregarded. If no rule is found for a 2337 * channel on the regulatory domain the channel will be disabled. 2338 */ 2339 extern void wiphy_apply_custom_regulatory( 2340 struct wiphy *wiphy, 2341 const struct ieee80211_regdomain *regd); 2342 2343 /** 2344 * freq_reg_info - get regulatory information for the given frequency 2345 * @wiphy: the wiphy for which we want to process this rule for 2346 * @center_freq: Frequency in KHz for which we want regulatory information for 2347 * @desired_bw_khz: the desired max bandwidth you want to use per 2348 * channel. Note that this is still 20 MHz if you want to use HT40 2349 * as HT40 makes use of two channels for its 40 MHz width bandwidth. 2350 * If set to 0 we'll assume you want the standard 20 MHz. 2351 * @reg_rule: the regulatory rule which we have for this frequency 2352 * 2353 * Use this function to get the regulatory rule for a specific frequency on 2354 * a given wireless device. If the device has a specific regulatory domain 2355 * it wants to follow we respect that unless a country IE has been received 2356 * and processed already. 2357 * 2358 * Returns 0 if it was able to find a valid regulatory rule which does 2359 * apply to the given center_freq otherwise it returns non-zero. It will 2360 * also return -ERANGE if we determine the given center_freq does not even have 2361 * a regulatory rule for a frequency range in the center_freq's band. See 2362 * freq_in_rule_band() for our current definition of a band -- this is purely 2363 * subjective and right now its 802.11 specific. 2364 */ 2365 extern int freq_reg_info(struct wiphy *wiphy, 2366 u32 center_freq, 2367 u32 desired_bw_khz, 2368 const struct ieee80211_reg_rule **reg_rule); 2369 2370 /* 2371 * Temporary wext handlers & helper functions 2372 * 2373 * In the future cfg80211 will simply assign the entire wext handler 2374 * structure to netdevs it manages, but we're not there yet. 2375 */ 2376 int cfg80211_wext_giwname(struct net_device *dev, 2377 struct iw_request_info *info, 2378 char *name, char *extra); 2379 int cfg80211_wext_siwmode(struct net_device *dev, struct iw_request_info *info, 2380 u32 *mode, char *extra); 2381 int cfg80211_wext_giwmode(struct net_device *dev, struct iw_request_info *info, 2382 u32 *mode, char *extra); 2383 int cfg80211_wext_siwscan(struct net_device *dev, 2384 struct iw_request_info *info, 2385 union iwreq_data *wrqu, char *extra); 2386 int cfg80211_wext_giwscan(struct net_device *dev, 2387 struct iw_request_info *info, 2388 struct iw_point *data, char *extra); 2389 int cfg80211_wext_siwmlme(struct net_device *dev, 2390 struct iw_request_info *info, 2391 struct iw_point *data, char *extra); 2392 int cfg80211_wext_giwrange(struct net_device *dev, 2393 struct iw_request_info *info, 2394 struct iw_point *data, char *extra); 2395 int cfg80211_wext_siwgenie(struct net_device *dev, 2396 struct iw_request_info *info, 2397 struct iw_point *data, char *extra); 2398 int cfg80211_wext_siwauth(struct net_device *dev, 2399 struct iw_request_info *info, 2400 struct iw_param *data, char *extra); 2401 int cfg80211_wext_giwauth(struct net_device *dev, 2402 struct iw_request_info *info, 2403 struct iw_param *data, char *extra); 2404 2405 int cfg80211_wext_siwfreq(struct net_device *dev, 2406 struct iw_request_info *info, 2407 struct iw_freq *freq, char *extra); 2408 int cfg80211_wext_giwfreq(struct net_device *dev, 2409 struct iw_request_info *info, 2410 struct iw_freq *freq, char *extra); 2411 int cfg80211_wext_siwessid(struct net_device *dev, 2412 struct iw_request_info *info, 2413 struct iw_point *data, char *ssid); 2414 int cfg80211_wext_giwessid(struct net_device *dev, 2415 struct iw_request_info *info, 2416 struct iw_point *data, char *ssid); 2417 int cfg80211_wext_siwrate(struct net_device *dev, 2418 struct iw_request_info *info, 2419 struct iw_param *rate, char *extra); 2420 int cfg80211_wext_giwrate(struct net_device *dev, 2421 struct iw_request_info *info, 2422 struct iw_param *rate, char *extra); 2423 2424 int cfg80211_wext_siwrts(struct net_device *dev, 2425 struct iw_request_info *info, 2426 struct iw_param *rts, char *extra); 2427 int cfg80211_wext_giwrts(struct net_device *dev, 2428 struct iw_request_info *info, 2429 struct iw_param *rts, char *extra); 2430 int cfg80211_wext_siwfrag(struct net_device *dev, 2431 struct iw_request_info *info, 2432 struct iw_param *frag, char *extra); 2433 int cfg80211_wext_giwfrag(struct net_device *dev, 2434 struct iw_request_info *info, 2435 struct iw_param *frag, char *extra); 2436 int cfg80211_wext_siwretry(struct net_device *dev, 2437 struct iw_request_info *info, 2438 struct iw_param *retry, char *extra); 2439 int cfg80211_wext_giwretry(struct net_device *dev, 2440 struct iw_request_info *info, 2441 struct iw_param *retry, char *extra); 2442 int cfg80211_wext_siwencodeext(struct net_device *dev, 2443 struct iw_request_info *info, 2444 struct iw_point *erq, char *extra); 2445 int cfg80211_wext_siwencode(struct net_device *dev, 2446 struct iw_request_info *info, 2447 struct iw_point *erq, char *keybuf); 2448 int cfg80211_wext_giwencode(struct net_device *dev, 2449 struct iw_request_info *info, 2450 struct iw_point *erq, char *keybuf); 2451 int cfg80211_wext_siwtxpower(struct net_device *dev, 2452 struct iw_request_info *info, 2453 union iwreq_data *data, char *keybuf); 2454 int cfg80211_wext_giwtxpower(struct net_device *dev, 2455 struct iw_request_info *info, 2456 union iwreq_data *data, char *keybuf); 2457 struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev); 2458 2459 int cfg80211_wext_siwpower(struct net_device *dev, 2460 struct iw_request_info *info, 2461 struct iw_param *wrq, char *extra); 2462 int cfg80211_wext_giwpower(struct net_device *dev, 2463 struct iw_request_info *info, 2464 struct iw_param *wrq, char *extra); 2465 2466 int cfg80211_wext_siwap(struct net_device *dev, 2467 struct iw_request_info *info, 2468 struct sockaddr *ap_addr, char *extra); 2469 int cfg80211_wext_giwap(struct net_device *dev, 2470 struct iw_request_info *info, 2471 struct sockaddr *ap_addr, char *extra); 2472 2473 int cfg80211_wext_siwpmksa(struct net_device *dev, 2474 struct iw_request_info *info, 2475 struct iw_point *data, char *extra); 2476 2477 /* 2478 * callbacks for asynchronous cfg80211 methods, notification 2479 * functions and BSS handling helpers 2480 */ 2481 2482 /** 2483 * cfg80211_scan_done - notify that scan finished 2484 * 2485 * @request: the corresponding scan request 2486 * @aborted: set to true if the scan was aborted for any reason, 2487 * userspace will be notified of that 2488 */ 2489 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 2490 2491 /** 2492 * cfg80211_sched_scan_results - notify that new scan results are available 2493 * 2494 * @wiphy: the wiphy which got scheduled scan results 2495 */ 2496 void cfg80211_sched_scan_results(struct wiphy *wiphy); 2497 2498 /** 2499 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 2500 * 2501 * @wiphy: the wiphy on which the scheduled scan stopped 2502 * 2503 * The driver can call this function to inform cfg80211 that the 2504 * scheduled scan had to be stopped, for whatever reason. The driver 2505 * is then called back via the sched_scan_stop operation when done. 2506 */ 2507 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 2508 2509 /** 2510 * cfg80211_inform_bss_frame - inform cfg80211 of a received BSS frame 2511 * 2512 * @wiphy: the wiphy reporting the BSS 2513 * @channel: The channel the frame was received on 2514 * @mgmt: the management frame (probe response or beacon) 2515 * @len: length of the management frame 2516 * @signal: the signal strength, type depends on the wiphy's signal_type 2517 * @gfp: context flags 2518 * 2519 * This informs cfg80211 that BSS information was found and 2520 * the BSS should be updated/added. 2521 */ 2522 struct cfg80211_bss* 2523 cfg80211_inform_bss_frame(struct wiphy *wiphy, 2524 struct ieee80211_channel *channel, 2525 struct ieee80211_mgmt *mgmt, size_t len, 2526 s32 signal, gfp_t gfp); 2527 2528 /** 2529 * cfg80211_inform_bss - inform cfg80211 of a new BSS 2530 * 2531 * @wiphy: the wiphy reporting the BSS 2532 * @channel: The channel the frame was received on 2533 * @bssid: the BSSID of the BSS 2534 * @timestamp: the TSF timestamp sent by the peer 2535 * @capability: the capability field sent by the peer 2536 * @beacon_interval: the beacon interval announced by the peer 2537 * @ie: additional IEs sent by the peer 2538 * @ielen: length of the additional IEs 2539 * @signal: the signal strength, type depends on the wiphy's signal_type 2540 * @gfp: context flags 2541 * 2542 * This informs cfg80211 that BSS information was found and 2543 * the BSS should be updated/added. 2544 */ 2545 struct cfg80211_bss* 2546 cfg80211_inform_bss(struct wiphy *wiphy, 2547 struct ieee80211_channel *channel, 2548 const u8 *bssid, 2549 u64 timestamp, u16 capability, u16 beacon_interval, 2550 const u8 *ie, size_t ielen, 2551 s32 signal, gfp_t gfp); 2552 2553 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 2554 struct ieee80211_channel *channel, 2555 const u8 *bssid, 2556 const u8 *ssid, size_t ssid_len, 2557 u16 capa_mask, u16 capa_val); 2558 static inline struct cfg80211_bss * 2559 cfg80211_get_ibss(struct wiphy *wiphy, 2560 struct ieee80211_channel *channel, 2561 const u8 *ssid, size_t ssid_len) 2562 { 2563 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 2564 WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); 2565 } 2566 2567 struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, 2568 struct ieee80211_channel *channel, 2569 const u8 *meshid, size_t meshidlen, 2570 const u8 *meshcfg); 2571 void cfg80211_put_bss(struct cfg80211_bss *bss); 2572 2573 /** 2574 * cfg80211_unlink_bss - unlink BSS from internal data structures 2575 * @wiphy: the wiphy 2576 * @bss: the bss to remove 2577 * 2578 * This function removes the given BSS from the internal data structures 2579 * thereby making it no longer show up in scan results etc. Use this 2580 * function when you detect a BSS is gone. Normally BSSes will also time 2581 * out, so it is not necessary to use this function at all. 2582 */ 2583 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 2584 2585 /** 2586 * cfg80211_send_rx_auth - notification of processed authentication 2587 * @dev: network device 2588 * @buf: authentication frame (header + body) 2589 * @len: length of the frame data 2590 * 2591 * This function is called whenever an authentication has been processed in 2592 * station mode. The driver is required to call either this function or 2593 * cfg80211_send_auth_timeout() to indicate the result of cfg80211_ops::auth() 2594 * call. This function may sleep. 2595 */ 2596 void cfg80211_send_rx_auth(struct net_device *dev, const u8 *buf, size_t len); 2597 2598 /** 2599 * cfg80211_send_auth_timeout - notification of timed out authentication 2600 * @dev: network device 2601 * @addr: The MAC address of the device with which the authentication timed out 2602 * 2603 * This function may sleep. 2604 */ 2605 void cfg80211_send_auth_timeout(struct net_device *dev, const u8 *addr); 2606 2607 /** 2608 * __cfg80211_auth_canceled - notify cfg80211 that authentication was canceled 2609 * @dev: network device 2610 * @addr: The MAC address of the device with which the authentication timed out 2611 * 2612 * When a pending authentication had no action yet, the driver may decide 2613 * to not send a deauth frame, but in that case must calls this function 2614 * to tell cfg80211 about this decision. It is only valid to call this 2615 * function within the deauth() callback. 2616 */ 2617 void __cfg80211_auth_canceled(struct net_device *dev, const u8 *addr); 2618 2619 /** 2620 * cfg80211_send_rx_assoc - notification of processed association 2621 * @dev: network device 2622 * @buf: (re)association response frame (header + body) 2623 * @len: length of the frame data 2624 * 2625 * This function is called whenever a (re)association response has been 2626 * processed in station mode. The driver is required to call either this 2627 * function or cfg80211_send_assoc_timeout() to indicate the result of 2628 * cfg80211_ops::assoc() call. This function may sleep. 2629 */ 2630 void cfg80211_send_rx_assoc(struct net_device *dev, const u8 *buf, size_t len); 2631 2632 /** 2633 * cfg80211_send_assoc_timeout - notification of timed out association 2634 * @dev: network device 2635 * @addr: The MAC address of the device with which the association timed out 2636 * 2637 * This function may sleep. 2638 */ 2639 void cfg80211_send_assoc_timeout(struct net_device *dev, const u8 *addr); 2640 2641 /** 2642 * cfg80211_send_deauth - notification of processed deauthentication 2643 * @dev: network device 2644 * @buf: deauthentication frame (header + body) 2645 * @len: length of the frame data 2646 * 2647 * This function is called whenever deauthentication has been processed in 2648 * station mode. This includes both received deauthentication frames and 2649 * locally generated ones. This function may sleep. 2650 */ 2651 void cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2652 2653 /** 2654 * __cfg80211_send_deauth - notification of processed deauthentication 2655 * @dev: network device 2656 * @buf: deauthentication frame (header + body) 2657 * @len: length of the frame data 2658 * 2659 * Like cfg80211_send_deauth(), but doesn't take the wdev lock. 2660 */ 2661 void __cfg80211_send_deauth(struct net_device *dev, const u8 *buf, size_t len); 2662 2663 /** 2664 * cfg80211_send_disassoc - notification of processed disassociation 2665 * @dev: network device 2666 * @buf: disassociation response frame (header + body) 2667 * @len: length of the frame data 2668 * 2669 * This function is called whenever disassociation has been processed in 2670 * station mode. This includes both received disassociation frames and locally 2671 * generated ones. This function may sleep. 2672 */ 2673 void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len); 2674 2675 /** 2676 * __cfg80211_send_disassoc - notification of processed disassociation 2677 * @dev: network device 2678 * @buf: disassociation response frame (header + body) 2679 * @len: length of the frame data 2680 * 2681 * Like cfg80211_send_disassoc(), but doesn't take the wdev lock. 2682 */ 2683 void __cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, 2684 size_t len); 2685 2686 /** 2687 * cfg80211_send_unprot_deauth - notification of unprotected deauthentication 2688 * @dev: network device 2689 * @buf: deauthentication frame (header + body) 2690 * @len: length of the frame data 2691 * 2692 * This function is called whenever a received Deauthentication frame has been 2693 * dropped in station mode because of MFP being used but the Deauthentication 2694 * frame was not protected. This function may sleep. 2695 */ 2696 void cfg80211_send_unprot_deauth(struct net_device *dev, const u8 *buf, 2697 size_t len); 2698 2699 /** 2700 * cfg80211_send_unprot_disassoc - notification of unprotected disassociation 2701 * @dev: network device 2702 * @buf: disassociation frame (header + body) 2703 * @len: length of the frame data 2704 * 2705 * This function is called whenever a received Disassociation frame has been 2706 * dropped in station mode because of MFP being used but the Disassociation 2707 * frame was not protected. This function may sleep. 2708 */ 2709 void cfg80211_send_unprot_disassoc(struct net_device *dev, const u8 *buf, 2710 size_t len); 2711 2712 /** 2713 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 2714 * @dev: network device 2715 * @addr: The source MAC address of the frame 2716 * @key_type: The key type that the received frame used 2717 * @key_id: Key identifier (0..3). Can be -1 if missing. 2718 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 2719 * @gfp: allocation flags 2720 * 2721 * This function is called whenever the local MAC detects a MIC failure in a 2722 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 2723 * primitive. 2724 */ 2725 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 2726 enum nl80211_key_type key_type, int key_id, 2727 const u8 *tsc, gfp_t gfp); 2728 2729 /** 2730 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 2731 * 2732 * @dev: network device 2733 * @bssid: the BSSID of the IBSS joined 2734 * @gfp: allocation flags 2735 * 2736 * This function notifies cfg80211 that the device joined an IBSS or 2737 * switched to a different BSSID. Before this function can be called, 2738 * either a beacon has to have been received from the IBSS, or one of 2739 * the cfg80211_inform_bss{,_frame} functions must have been called 2740 * with the locally generated beacon -- this guarantees that there is 2741 * always a scan result for this IBSS. cfg80211 will handle the rest. 2742 */ 2743 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, gfp_t gfp); 2744 2745 /** 2746 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 2747 * 2748 * @dev: network device 2749 * @macaddr: the MAC address of the new candidate 2750 * @ie: information elements advertised by the peer candidate 2751 * @ie_len: lenght of the information elements buffer 2752 * @gfp: allocation flags 2753 * 2754 * This function notifies cfg80211 that the mesh peer candidate has been 2755 * detected, most likely via a beacon or, less likely, via a probe response. 2756 * cfg80211 then sends a notification to userspace. 2757 */ 2758 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 2759 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 2760 2761 /** 2762 * DOC: RFkill integration 2763 * 2764 * RFkill integration in cfg80211 is almost invisible to drivers, 2765 * as cfg80211 automatically registers an rfkill instance for each 2766 * wireless device it knows about. Soft kill is also translated 2767 * into disconnecting and turning all interfaces off, drivers are 2768 * expected to turn off the device when all interfaces are down. 2769 * 2770 * However, devices may have a hard RFkill line, in which case they 2771 * also need to interact with the rfkill subsystem, via cfg80211. 2772 * They can do this with a few helper functions documented here. 2773 */ 2774 2775 /** 2776 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 2777 * @wiphy: the wiphy 2778 * @blocked: block status 2779 */ 2780 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 2781 2782 /** 2783 * wiphy_rfkill_start_polling - start polling rfkill 2784 * @wiphy: the wiphy 2785 */ 2786 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 2787 2788 /** 2789 * wiphy_rfkill_stop_polling - stop polling rfkill 2790 * @wiphy: the wiphy 2791 */ 2792 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 2793 2794 #ifdef CONFIG_NL80211_TESTMODE 2795 /** 2796 * DOC: Test mode 2797 * 2798 * Test mode is a set of utility functions to allow drivers to 2799 * interact with driver-specific tools to aid, for instance, 2800 * factory programming. 2801 * 2802 * This chapter describes how drivers interact with it, for more 2803 * information see the nl80211 book's chapter on it. 2804 */ 2805 2806 /** 2807 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 2808 * @wiphy: the wiphy 2809 * @approxlen: an upper bound of the length of the data that will 2810 * be put into the skb 2811 * 2812 * This function allocates and pre-fills an skb for a reply to 2813 * the testmode command. Since it is intended for a reply, calling 2814 * it outside of the @testmode_cmd operation is invalid. 2815 * 2816 * The returned skb (or %NULL if any errors happen) is pre-filled 2817 * with the wiphy index and set up in a way that any data that is 2818 * put into the skb (with skb_put(), nla_put() or similar) will end 2819 * up being within the %NL80211_ATTR_TESTDATA attribute, so all that 2820 * needs to be done with the skb is adding data for the corresponding 2821 * userspace tool which can then read that data out of the testdata 2822 * attribute. You must not modify the skb in any other way. 2823 * 2824 * When done, call cfg80211_testmode_reply() with the skb and return 2825 * its error code as the result of the @testmode_cmd operation. 2826 */ 2827 struct sk_buff *cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, 2828 int approxlen); 2829 2830 /** 2831 * cfg80211_testmode_reply - send the reply skb 2832 * @skb: The skb, must have been allocated with 2833 * cfg80211_testmode_alloc_reply_skb() 2834 * 2835 * Returns an error code or 0 on success, since calling this 2836 * function will usually be the last thing before returning 2837 * from the @testmode_cmd you should return the error code. 2838 * Note that this function consumes the skb regardless of the 2839 * return value. 2840 */ 2841 int cfg80211_testmode_reply(struct sk_buff *skb); 2842 2843 /** 2844 * cfg80211_testmode_alloc_event_skb - allocate testmode event 2845 * @wiphy: the wiphy 2846 * @approxlen: an upper bound of the length of the data that will 2847 * be put into the skb 2848 * @gfp: allocation flags 2849 * 2850 * This function allocates and pre-fills an skb for an event on the 2851 * testmode multicast group. 2852 * 2853 * The returned skb (or %NULL if any errors happen) is set up in the 2854 * same way as with cfg80211_testmode_alloc_reply_skb() but prepared 2855 * for an event. As there, you should simply add data to it that will 2856 * then end up in the %NL80211_ATTR_TESTDATA attribute. Again, you must 2857 * not modify the skb in any other way. 2858 * 2859 * When done filling the skb, call cfg80211_testmode_event() with the 2860 * skb to send the event. 2861 */ 2862 struct sk_buff *cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, 2863 int approxlen, gfp_t gfp); 2864 2865 /** 2866 * cfg80211_testmode_event - send the event 2867 * @skb: The skb, must have been allocated with 2868 * cfg80211_testmode_alloc_event_skb() 2869 * @gfp: allocation flags 2870 * 2871 * This function sends the given @skb, which must have been allocated 2872 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 2873 * consumes it. 2874 */ 2875 void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp); 2876 2877 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 2878 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 2879 #else 2880 #define CFG80211_TESTMODE_CMD(cmd) 2881 #define CFG80211_TESTMODE_DUMP(cmd) 2882 #endif 2883 2884 /** 2885 * cfg80211_connect_result - notify cfg80211 of connection result 2886 * 2887 * @dev: network device 2888 * @bssid: the BSSID of the AP 2889 * @req_ie: association request IEs (maybe be %NULL) 2890 * @req_ie_len: association request IEs length 2891 * @resp_ie: association response IEs (may be %NULL) 2892 * @resp_ie_len: assoc response IEs length 2893 * @status: status code, 0 for successful connection, use 2894 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 2895 * the real status code for failures. 2896 * @gfp: allocation flags 2897 * 2898 * It should be called by the underlying driver whenever connect() has 2899 * succeeded. 2900 */ 2901 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 2902 const u8 *req_ie, size_t req_ie_len, 2903 const u8 *resp_ie, size_t resp_ie_len, 2904 u16 status, gfp_t gfp); 2905 2906 /** 2907 * cfg80211_roamed - notify cfg80211 of roaming 2908 * 2909 * @dev: network device 2910 * @channel: the channel of the new AP 2911 * @bssid: the BSSID of the new AP 2912 * @req_ie: association request IEs (maybe be %NULL) 2913 * @req_ie_len: association request IEs length 2914 * @resp_ie: association response IEs (may be %NULL) 2915 * @resp_ie_len: assoc response IEs length 2916 * @gfp: allocation flags 2917 * 2918 * It should be called by the underlying driver whenever it roamed 2919 * from one AP to another while connected. 2920 */ 2921 void cfg80211_roamed(struct net_device *dev, 2922 struct ieee80211_channel *channel, 2923 const u8 *bssid, 2924 const u8 *req_ie, size_t req_ie_len, 2925 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 2926 2927 /** 2928 * cfg80211_disconnected - notify cfg80211 that connection was dropped 2929 * 2930 * @dev: network device 2931 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 2932 * @ie_len: length of IEs 2933 * @reason: reason code for the disconnection, set it to 0 if unknown 2934 * @gfp: allocation flags 2935 * 2936 * After it calls this function, the driver should enter an idle state 2937 * and not try to connect to any AP any more. 2938 */ 2939 void cfg80211_disconnected(struct net_device *dev, u16 reason, 2940 u8 *ie, size_t ie_len, gfp_t gfp); 2941 2942 /** 2943 * cfg80211_ready_on_channel - notification of remain_on_channel start 2944 * @dev: network device 2945 * @cookie: the request cookie 2946 * @chan: The current channel (from remain_on_channel request) 2947 * @channel_type: Channel type 2948 * @duration: Duration in milliseconds that the driver intents to remain on the 2949 * channel 2950 * @gfp: allocation flags 2951 */ 2952 void cfg80211_ready_on_channel(struct net_device *dev, u64 cookie, 2953 struct ieee80211_channel *chan, 2954 enum nl80211_channel_type channel_type, 2955 unsigned int duration, gfp_t gfp); 2956 2957 /** 2958 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 2959 * @dev: network device 2960 * @cookie: the request cookie 2961 * @chan: The current channel (from remain_on_channel request) 2962 * @channel_type: Channel type 2963 * @gfp: allocation flags 2964 */ 2965 void cfg80211_remain_on_channel_expired(struct net_device *dev, 2966 u64 cookie, 2967 struct ieee80211_channel *chan, 2968 enum nl80211_channel_type channel_type, 2969 gfp_t gfp); 2970 2971 2972 /** 2973 * cfg80211_new_sta - notify userspace about station 2974 * 2975 * @dev: the netdev 2976 * @mac_addr: the station's address 2977 * @sinfo: the station information 2978 * @gfp: allocation flags 2979 */ 2980 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 2981 struct station_info *sinfo, gfp_t gfp); 2982 2983 /** 2984 * cfg80211_del_sta - notify userspace about deletion of a station 2985 * 2986 * @dev: the netdev 2987 * @mac_addr: the station's address 2988 * @gfp: allocation flags 2989 */ 2990 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp); 2991 2992 /** 2993 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 2994 * @dev: network device 2995 * @freq: Frequency on which the frame was received in MHz 2996 * @buf: Management frame (header + body) 2997 * @len: length of the frame data 2998 * @gfp: context flags 2999 * 3000 * Returns %true if a user space application has registered for this frame. 3001 * For action frames, that makes it responsible for rejecting unrecognized 3002 * action frames; %false otherwise, in which case for action frames the 3003 * driver is responsible for rejecting the frame. 3004 * 3005 * This function is called whenever an Action frame is received for a station 3006 * mode interface, but is not processed in kernel. 3007 */ 3008 bool cfg80211_rx_mgmt(struct net_device *dev, int freq, const u8 *buf, 3009 size_t len, gfp_t gfp); 3010 3011 /** 3012 * cfg80211_mgmt_tx_status - notification of TX status for management frame 3013 * @dev: network device 3014 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 3015 * @buf: Management frame (header + body) 3016 * @len: length of the frame data 3017 * @ack: Whether frame was acknowledged 3018 * @gfp: context flags 3019 * 3020 * This function is called whenever a management frame was requested to be 3021 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 3022 * transmission attempt. 3023 */ 3024 void cfg80211_mgmt_tx_status(struct net_device *dev, u64 cookie, 3025 const u8 *buf, size_t len, bool ack, gfp_t gfp); 3026 3027 3028 /** 3029 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 3030 * @dev: network device 3031 * @rssi_event: the triggered RSSI event 3032 * @gfp: context flags 3033 * 3034 * This function is called when a configured connection quality monitoring 3035 * rssi threshold reached event occurs. 3036 */ 3037 void cfg80211_cqm_rssi_notify(struct net_device *dev, 3038 enum nl80211_cqm_rssi_threshold_event rssi_event, 3039 gfp_t gfp); 3040 3041 /** 3042 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 3043 * @dev: network device 3044 * @peer: peer's MAC address 3045 * @num_packets: how many packets were lost -- should be a fixed threshold 3046 * but probably no less than maybe 50, or maybe a throughput dependent 3047 * threshold (to account for temporary interference) 3048 * @gfp: context flags 3049 */ 3050 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 3051 const u8 *peer, u32 num_packets, gfp_t gfp); 3052 3053 /** 3054 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 3055 * @dev: network device 3056 * @bssid: BSSID of AP (to avoid races) 3057 * @replay_ctr: new replay counter 3058 * @gfp: allocation flags 3059 */ 3060 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 3061 const u8 *replay_ctr, gfp_t gfp); 3062 3063 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 3064 3065 /* wiphy_printk helpers, similar to dev_printk */ 3066 3067 #define wiphy_printk(level, wiphy, format, args...) \ 3068 dev_printk(level, &(wiphy)->dev, format, ##args) 3069 #define wiphy_emerg(wiphy, format, args...) \ 3070 dev_emerg(&(wiphy)->dev, format, ##args) 3071 #define wiphy_alert(wiphy, format, args...) \ 3072 dev_alert(&(wiphy)->dev, format, ##args) 3073 #define wiphy_crit(wiphy, format, args...) \ 3074 dev_crit(&(wiphy)->dev, format, ##args) 3075 #define wiphy_err(wiphy, format, args...) \ 3076 dev_err(&(wiphy)->dev, format, ##args) 3077 #define wiphy_warn(wiphy, format, args...) \ 3078 dev_warn(&(wiphy)->dev, format, ##args) 3079 #define wiphy_notice(wiphy, format, args...) \ 3080 dev_notice(&(wiphy)->dev, format, ##args) 3081 #define wiphy_info(wiphy, format, args...) \ 3082 dev_info(&(wiphy)->dev, format, ##args) 3083 3084 #define wiphy_debug(wiphy, format, args...) \ 3085 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 3086 3087 #define wiphy_dbg(wiphy, format, args...) \ 3088 dev_dbg(&(wiphy)->dev, format, ##args) 3089 3090 #if defined(VERBOSE_DEBUG) 3091 #define wiphy_vdbg wiphy_dbg 3092 #else 3093 #define wiphy_vdbg(wiphy, format, args...) \ 3094 ({ \ 3095 if (0) \ 3096 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 3097 0; \ 3098 }) 3099 #endif 3100 3101 /* 3102 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 3103 * of using a WARN/WARN_ON to get the message out, including the 3104 * file/line information and a backtrace. 3105 */ 3106 #define wiphy_WARN(wiphy, format, args...) \ 3107 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 3108 3109 #endif /* __NET_CFG80211_H */ 3110