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Jiri Bencf0706e82007-05-05 11:45:53 -07001/*
Johannes Berg3017b802007-08-28 17:01:53 -04002 * mac80211 <-> driver interface
3 *
Jiri Bencf0706e82007-05-05 11:45:53 -07004 * Copyright 2002-2005, Devicescape Software, Inc.
5 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
Johannes Berg3017b802007-08-28 17:01:53 -04006 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
Jiri Bencf0706e82007-05-05 11:45:53 -07007 *
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#ifndef MAC80211_H
14#define MAC80211_H
15
16#include <linux/kernel.h>
17#include <linux/if_ether.h>
18#include <linux/skbuff.h>
19#include <linux/wireless.h>
20#include <linux/device.h>
21#include <linux/ieee80211.h>
22#include <net/wireless.h>
23#include <net/cfg80211.h>
24
Johannes Berg75a5f0c2007-09-18 17:29:20 -040025/**
26 * DOC: Introduction
27 *
28 * mac80211 is the Linux stack for 802.11 hardware that implements
29 * only partial functionality in hard- or firmware. This document
30 * defines the interface between mac80211 and low-level hardware
31 * drivers.
32 */
33
34/**
35 * DOC: Calling mac80211 from interrupts
36 *
37 * Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be
Jiri Bencf0706e82007-05-05 11:45:53 -070038 * called in hardware interrupt context. The low-level driver must not call any
39 * other functions in hardware interrupt context. If there is a need for such
40 * call, the low-level driver should first ACK the interrupt and perform the
Johannes Berg2485f712008-02-25 16:27:41 +010041 * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even
42 * tasklet function.
43 *
44 * NOTE: If the driver opts to use the _irqsafe() functions, it may not also
45 * use the non-irqsafe functions!
Jiri Bencf0706e82007-05-05 11:45:53 -070046 */
47
Johannes Berg75a5f0c2007-09-18 17:29:20 -040048/**
49 * DOC: Warning
Jiri Bencf0706e82007-05-05 11:45:53 -070050 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -040051 * If you're reading this document and not the header file itself, it will
52 * be incomplete because not all documentation has been converted yet.
53 */
54
55/**
56 * DOC: Frame format
Jiri Bencf0706e82007-05-05 11:45:53 -070057 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -040058 * As a general rule, when frames are passed between mac80211 and the driver,
59 * they start with the IEEE 802.11 header and include the same octets that are
60 * sent over the air except for the FCS which should be calculated by the
61 * hardware.
62 *
63 * There are, however, various exceptions to this rule for advanced features:
64 *
65 * The first exception is for hardware encryption and decryption offload
66 * where the IV/ICV may or may not be generated in hardware.
67 *
68 * Secondly, when the hardware handles fragmentation, the frame handed to
69 * the driver from mac80211 is the MSDU, not the MPDU.
70 *
71 * Finally, for received frames, the driver is able to indicate that it has
72 * filled a radiotap header and put that in front of the frame; if it does
73 * not do so then mac80211 may add this under certain circumstances.
Jiri Bencf0706e82007-05-05 11:45:53 -070074 */
75
Ron Rindjunsky10816d42007-11-26 16:14:30 +020076/**
Mohamed Abbas84363e62008-04-04 16:59:58 -070077 * enum ieee80211_notification_type - Low level driver notification
78 * @IEEE80211_NOTIFY_RE_ASSOC: start the re-association sequence
79 */
80enum ieee80211_notification_types {
81 IEEE80211_NOTIFY_RE_ASSOC,
82};
83
84/**
Ron Rindjunsky10816d42007-11-26 16:14:30 +020085 * struct ieee80211_ht_bss_info - describing BSS's HT characteristics
86 *
87 * This structure describes most essential parameters needed
88 * to describe 802.11n HT characteristics in a BSS
89 *
90 * @primary_channel: channel number of primery channel
91 * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width)
92 * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection)
93 */
94struct ieee80211_ht_bss_info {
95 u8 primary_channel;
96 u8 bss_cap; /* use IEEE80211_HT_IE_CHA_ */
97 u8 bss_op_mode; /* use IEEE80211_HT_IE_ */
98};
99
100/**
Johannes Berge100bb62008-04-30 18:51:21 +0200101 * enum ieee80211_max_queues - maximum number of queues
102 *
103 * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues.
104 * @IEEE80211_MAX_AMPDU_QUEUES: Maximum number of queues usable
105 * for A-MPDU operation.
106 */
107enum ieee80211_max_queues {
108 IEEE80211_MAX_QUEUES = 16,
109 IEEE80211_MAX_AMPDU_QUEUES = 16,
110};
111
112/**
Johannes Berg6b301cd2007-09-18 17:29:20 -0400113 * struct ieee80211_tx_queue_params - transmit queue configuration
114 *
115 * The information provided in this structure is required for QoS
Johannes Berg3330d7b2008-02-10 16:49:38 +0100116 * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29.
Johannes Berg6b301cd2007-09-18 17:29:20 -0400117 *
118 * @aifs: arbitration interface space [0..255, -1: use default]
119 * @cw_min: minimum contention window [will be a value of the form
120 * 2^n-1 in the range 1..1023; 0: use default]
121 * @cw_max: maximum contention window [like @cw_min]
Johannes Berg3330d7b2008-02-10 16:49:38 +0100122 * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled
Johannes Berg6b301cd2007-09-18 17:29:20 -0400123 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700124struct ieee80211_tx_queue_params {
Johannes Berg3330d7b2008-02-10 16:49:38 +0100125 s16 aifs;
126 u16 cw_min;
127 u16 cw_max;
128 u16 txop;
Jiri Bencf0706e82007-05-05 11:45:53 -0700129};
130
Johannes Berg6b301cd2007-09-18 17:29:20 -0400131/**
Johannes Berg57ffc582008-04-29 17:18:59 +0200132 * struct ieee80211_tx_queue_stats - transmit queue statistics
Johannes Berg6b301cd2007-09-18 17:29:20 -0400133 *
134 * @len: number of packets in queue
135 * @limit: queue length limit
136 * @count: number of frames sent
137 */
Johannes Berg57ffc582008-04-29 17:18:59 +0200138struct ieee80211_tx_queue_stats {
Johannes Berg6b301cd2007-09-18 17:29:20 -0400139 unsigned int len;
140 unsigned int limit;
141 unsigned int count;
Jiri Bencf0706e82007-05-05 11:45:53 -0700142};
143
Jiri Bencf0706e82007-05-05 11:45:53 -0700144struct ieee80211_low_level_stats {
145 unsigned int dot11ACKFailureCount;
146 unsigned int dot11RTSFailureCount;
147 unsigned int dot11FCSErrorCount;
148 unsigned int dot11RTSSuccessCount;
149};
150
Johannes Berg471b3ef2007-12-28 14:32:58 +0100151/**
152 * enum ieee80211_bss_change - BSS change notification flags
153 *
154 * These flags are used with the bss_info_changed() callback
155 * to indicate which BSS parameter changed.
156 *
157 * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated),
158 * also implies a change in the AID.
159 * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed
160 * @BSS_CHANGED_ERP_PREAMBLE: preamble changed
Tomas Winkler38668c02008-03-28 16:33:32 -0700161 * @BSS_CHANGED_HT: 802.11n parameters changed
Johannes Berg471b3ef2007-12-28 14:32:58 +0100162 */
163enum ieee80211_bss_change {
164 BSS_CHANGED_ASSOC = 1<<0,
165 BSS_CHANGED_ERP_CTS_PROT = 1<<1,
166 BSS_CHANGED_ERP_PREAMBLE = 1<<2,
Tomas Winkler38668c02008-03-28 16:33:32 -0700167 BSS_CHANGED_HT = 1<<4,
Johannes Berg471b3ef2007-12-28 14:32:58 +0100168};
169
170/**
171 * struct ieee80211_bss_conf - holds the BSS's changing parameters
172 *
173 * This structure keeps information about a BSS (and an association
174 * to that BSS) that can change during the lifetime of the BSS.
175 *
176 * @assoc: association status
177 * @aid: association ID number, valid only when @assoc is true
178 * @use_cts_prot: use CTS protection
179 * @use_short_preamble: use 802.11b short preamble
Tomas Winkler21c0cbe2008-03-28 16:33:34 -0700180 * @timestamp: beacon timestamp
181 * @beacon_int: beacon interval
182 * @assoc_capability: capabbilities taken from assoc resp
Tomas Winkler38668c02008-03-28 16:33:32 -0700183 * @assoc_ht: association in HT mode
184 * @ht_conf: ht capabilities
185 * @ht_bss_conf: ht extended capabilities
Johannes Berg471b3ef2007-12-28 14:32:58 +0100186 */
187struct ieee80211_bss_conf {
188 /* association related data */
189 bool assoc;
190 u16 aid;
191 /* erp related data */
192 bool use_cts_prot;
193 bool use_short_preamble;
Tomas Winkler21c0cbe2008-03-28 16:33:34 -0700194 u16 beacon_int;
195 u16 assoc_capability;
196 u64 timestamp;
Tomas Winkler38668c02008-03-28 16:33:32 -0700197 /* ht related data */
198 bool assoc_ht;
199 struct ieee80211_ht_info *ht_conf;
200 struct ieee80211_ht_bss_info *ht_bss_conf;
Johannes Berg471b3ef2007-12-28 14:32:58 +0100201};
202
Ron Rindjunsky11f4b1c2008-03-04 18:09:26 -0800203/**
204 * enum mac80211_tx_control_flags - flags to describe Tx configuration for
205 * the Tx frame
206 *
207 * These flags are used with the @flags member of &ieee80211_tx_control
208 *
209 * @IEEE80211_TXCTL_REQ_TX_STATUS: request TX status callback for this frame.
210 * @IEEE80211_TXCTL_DO_NOT_ENCRYPT: send this frame without encryption;
211 * e.g., for EAPOL frame
212 * @IEEE80211_TXCTL_USE_RTS_CTS: use RTS-CTS before sending frame
213 * @IEEE80211_TXCTL_USE_CTS_PROTECT: use CTS protection for the frame (e.g.,
214 * for combined 802.11g / 802.11b networks)
215 * @IEEE80211_TXCTL_NO_ACK: tell the low level not to wait for an ack
216 * @IEEE80211_TXCTL_RATE_CTRL_PROBE
217 * @EEE80211_TXCTL_CLEAR_PS_FILT: clear powersave filter
218 * for destination station
219 * @IEEE80211_TXCTL_REQUEUE:
220 * @IEEE80211_TXCTL_FIRST_FRAGMENT: this is a first fragment of the frame
221 * @IEEE80211_TXCTL_LONG_RETRY_LIMIT: this frame should be send using the
222 * through set_retry_limit configured long
223 * retry value
224 * @IEEE80211_TXCTL_EAPOL_FRAME: internal to mac80211
225 * @IEEE80211_TXCTL_SEND_AFTER_DTIM: send this frame after DTIM beacon
226 * @IEEE80211_TXCTL_AMPDU: this frame should be sent as part of an A-MPDU
Ron Rindjunsky6c5ef8a2008-03-05 17:38:59 +0200227 * @IEEE80211_TXCTL_OFDM_HT: this frame can be sent in HT OFDM rates. number
228 * of streams when this flag is on can be extracted
229 * from antenna_sel_tx, so if 1 antenna is marked
230 * use SISO, 2 antennas marked use MIMO, n antennas
231 * marked use MIMO_n.
Ron Rindjunsky11f4b1c2008-03-04 18:09:26 -0800232 * @IEEE80211_TXCTL_GREEN_FIELD: use green field protection for this frame
233 * @IEEE80211_TXCTL_40_MHZ_WIDTH: send this frame using 40 Mhz channel width
234 * @IEEE80211_TXCTL_DUP_DATA: duplicate data frame on both 20 Mhz channels
235 * @IEEE80211_TXCTL_SHORT_GI: send this frame using short guard interval
236 */
237enum mac80211_tx_control_flags {
238 IEEE80211_TXCTL_REQ_TX_STATUS = (1<<0),
239 IEEE80211_TXCTL_DO_NOT_ENCRYPT = (1<<1),
240 IEEE80211_TXCTL_USE_RTS_CTS = (1<<2),
241 IEEE80211_TXCTL_USE_CTS_PROTECT = (1<<3),
242 IEEE80211_TXCTL_NO_ACK = (1<<4),
243 IEEE80211_TXCTL_RATE_CTRL_PROBE = (1<<5),
244 IEEE80211_TXCTL_CLEAR_PS_FILT = (1<<6),
245 IEEE80211_TXCTL_REQUEUE = (1<<7),
246 IEEE80211_TXCTL_FIRST_FRAGMENT = (1<<8),
247 IEEE80211_TXCTL_SHORT_PREAMBLE = (1<<9),
248 IEEE80211_TXCTL_LONG_RETRY_LIMIT = (1<<10),
249 IEEE80211_TXCTL_EAPOL_FRAME = (1<<11),
250 IEEE80211_TXCTL_SEND_AFTER_DTIM = (1<<12),
251 IEEE80211_TXCTL_AMPDU = (1<<13),
252 IEEE80211_TXCTL_OFDM_HT = (1<<14),
253 IEEE80211_TXCTL_GREEN_FIELD = (1<<15),
254 IEEE80211_TXCTL_40_MHZ_WIDTH = (1<<16),
255 IEEE80211_TXCTL_DUP_DATA = (1<<17),
256 IEEE80211_TXCTL_SHORT_GI = (1<<18),
257};
258
Jiri Bencf0706e82007-05-05 11:45:53 -0700259/* Transmit control fields. This data structure is passed to low-level driver
260 * with each TX frame. The low-level driver is responsible for configuring
Ivo van Doorn1c014422008-04-17 19:41:02 +0200261 * the hardware to use given values (depending on what is supported).
262 *
263 * NOTE: Be careful with using the pointers outside of the ieee80211_ops->tx()
264 * context (i.e. when defering the work to a workqueue).
265 * The vif pointer is valid until the it has been removed with the
266 * ieee80211_ops->remove_interface() callback funtion.
267 * The hw_key pointer is valid until it has been removed with the
268 * ieee80211_ops->set_key() callback function.
Ivo van Doorn1c014422008-04-17 19:41:02 +0200269 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700270struct ieee80211_tx_control {
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200271 u32 flags; /* tx control flags defined above */
272
273 s8 tx_rate_idx, /* Transmit rate (indexes registered rates) */
274 rts_cts_rate_idx, /* Transmit rate for RTS/CTS frame */
275 alt_retry_rate_idx; /* retry rate for the last retries */
276
277 s8 retry_limit; /* 1 = only first attempt, 2 = one retry, ..
278 * This could be used when set_retry_limit
279 * is not implemented by the driver */
280
Johannes Berg32bfd352007-12-19 01:31:26 +0100281 struct ieee80211_vif *vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700282
Ivo van Doorn1c014422008-04-17 19:41:02 +0200283 /* Key used for hardware encryption
284 * NULL if IEEE80211_TXCTL_DO_NOT_ENCRYPT is set */
285 struct ieee80211_key_conf *hw_key;
286
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200287 enum ieee80211_band band;
288
Ron Rindjunsky11f4b1c2008-03-04 18:09:26 -0800289 u8 antenna_sel_tx; /* 0 = default/diversity, otherwise bit
290 * position represents antenna number used */
Jiri Bencf0706e82007-05-05 11:45:53 -0700291 u8 icv_len; /* length of the ICV/MIC field in octets */
292 u8 iv_len; /* length of the IV field in octets */
Johannes Berge100bb62008-04-30 18:51:21 +0200293 u16 queue; /* hardware queue to use for this frame;
Jiri Bencf0706e82007-05-05 11:45:53 -0700294 * 0 = highest, hw->queues-1 = lowest */
Chrfff77102008-04-01 21:45:18 +0200295 u16 aid; /* Station AID */
Jiri Bencf0706e82007-05-05 11:45:53 -0700296 int type; /* internal */
Jiri Bencf0706e82007-05-05 11:45:53 -0700297};
298
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400299
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200300
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400301/**
302 * enum mac80211_rx_flags - receive flags
303 *
304 * These flags are used with the @flag member of &struct ieee80211_rx_status.
305 * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame.
306 * Use together with %RX_FLAG_MMIC_STRIPPED.
307 * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware.
308 * @RX_FLAG_RADIOTAP: This frame starts with a radiotap header.
309 * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame,
310 * verification has been done by the hardware.
311 * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame.
312 * If this flag is set, the stack cannot do any replay detection
313 * hence the driver or hardware will have to do that.
Johannes Berg72abd812007-09-17 01:29:22 -0400314 * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on
315 * the frame.
316 * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on
317 * the frame.
Johannes Bergc49e5ea2007-12-11 21:33:42 +0100318 * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field)
Bruno Randolf9d9bf772008-02-18 11:21:36 +0900319 * is valid. This is useful in monitor mode and necessary for beacon frames
320 * to enable IBSS merging.
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400321 */
322enum mac80211_rx_flags {
323 RX_FLAG_MMIC_ERROR = 1<<0,
324 RX_FLAG_DECRYPTED = 1<<1,
325 RX_FLAG_RADIOTAP = 1<<2,
326 RX_FLAG_MMIC_STRIPPED = 1<<3,
327 RX_FLAG_IV_STRIPPED = 1<<4,
Johannes Berg72abd812007-09-17 01:29:22 -0400328 RX_FLAG_FAILED_FCS_CRC = 1<<5,
329 RX_FLAG_FAILED_PLCP_CRC = 1<<6,
Johannes Bergc49e5ea2007-12-11 21:33:42 +0100330 RX_FLAG_TSFT = 1<<7,
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400331};
332
333/**
334 * struct ieee80211_rx_status - receive status
335 *
336 * The low-level driver should provide this information (the subset
337 * supported by hardware) to the 802.11 code with each received
338 * frame.
Bruno Randolf566bfe52008-05-08 19:15:40 +0200339 *
Bruno Randolfc132bec2008-02-18 11:20:51 +0900340 * @mactime: value in microseconds of the 64-bit Time Synchronization Function
341 * (TSF) timer when the first data symbol (MPDU) arrived at the hardware.
Johannes Berg8318d782008-01-24 19:38:38 +0100342 * @band: the active band when this frame was received
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400343 * @freq: frequency the radio was tuned to when receiving this frame, in MHz
Bruno Randolf566bfe52008-05-08 19:15:40 +0200344 * @signal: signal strength when receiving this frame, either in dBm, in dB or
345 * unspecified depending on the hardware capabilities flags
346 * @IEEE80211_HW_SIGNAL_*
347 * @noise: noise when receiving this frame, in dBm.
348 * @qual: overall signal quality indication, in percent (0-100).
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400349 * @antenna: antenna used
Johannes Berg8318d782008-01-24 19:38:38 +0100350 * @rate_idx: index of data rate into band's supported rates
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400351 * @flag: %RX_FLAG_*
352 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700353struct ieee80211_rx_status {
354 u64 mactime;
Johannes Berg8318d782008-01-24 19:38:38 +0100355 enum ieee80211_band band;
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400356 int freq;
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400357 int signal;
Jiri Bencf0706e82007-05-05 11:45:53 -0700358 int noise;
Bruno Randolf566bfe52008-05-08 19:15:40 +0200359 int qual;
Jiri Bencf0706e82007-05-05 11:45:53 -0700360 int antenna;
Johannes Berg8318d782008-01-24 19:38:38 +0100361 int rate_idx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700362 int flag;
363};
364
Johannes Berg6b301cd2007-09-18 17:29:20 -0400365/**
366 * enum ieee80211_tx_status_flags - transmit status flags
367 *
368 * Status flags to indicate various transmit conditions.
369 *
370 * @IEEE80211_TX_STATUS_TX_FILTERED: The frame was not transmitted
371 * because the destination STA was in powersave mode.
Johannes Berg6b301cd2007-09-18 17:29:20 -0400372 * @IEEE80211_TX_STATUS_ACK: Frame was acknowledged
Ron Rindjunsky483fdcec2008-01-28 14:07:21 +0200373 * @IEEE80211_TX_STATUS_AMPDU: The frame was aggregated, so status
374 * is for the whole aggregation.
Johannes Berg6b301cd2007-09-18 17:29:20 -0400375 */
376enum ieee80211_tx_status_flags {
377 IEEE80211_TX_STATUS_TX_FILTERED = 1<<0,
378 IEEE80211_TX_STATUS_ACK = 1<<1,
Ron Rindjunsky483fdcec2008-01-28 14:07:21 +0200379 IEEE80211_TX_STATUS_AMPDU = 1<<2,
Johannes Berg6b301cd2007-09-18 17:29:20 -0400380};
381
382/**
383 * struct ieee80211_tx_status - transmit status
384 *
385 * As much information as possible should be provided for each transmitted
386 * frame with ieee80211_tx_status().
387 *
388 * @control: a copy of the &struct ieee80211_tx_control passed to the driver
389 * in the tx() callback.
Johannes Berg6b301cd2007-09-18 17:29:20 -0400390 * @flags: transmit status flags, defined above
Ron Rindjunsky483fdcec2008-01-28 14:07:21 +0200391 * @retry_count: number of retries
Johannes Berg6b301cd2007-09-18 17:29:20 -0400392 * @excessive_retries: set to 1 if the frame was retried many times
393 * but not acknowledged
Ron Rindjunsky483fdcec2008-01-28 14:07:21 +0200394 * @ampdu_ack_len: number of aggregated frames.
395 * relevant only if IEEE80211_TX_STATUS_AMPDU was set.
396 * @ampdu_ack_map: block ack bit map for the aggregation.
397 * relevant only if IEEE80211_TX_STATUS_AMPDU was set.
Bruno Randolf566bfe52008-05-08 19:15:40 +0200398 * @ack_signal: signal strength of the ACK frame either in dBm, dB or unspec
399 * depending on hardware capabilites flags @IEEE80211_HW_SIGNAL_*
Johannes Berg6b301cd2007-09-18 17:29:20 -0400400 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700401struct ieee80211_tx_status {
Jiri Bencf0706e82007-05-05 11:45:53 -0700402 struct ieee80211_tx_control control;
Johannes Berg6b301cd2007-09-18 17:29:20 -0400403 u8 flags;
Johannes Berg6b301cd2007-09-18 17:29:20 -0400404 u8 retry_count;
Ron Rindjunsky483fdcec2008-01-28 14:07:21 +0200405 bool excessive_retries;
406 u8 ampdu_ack_len;
407 u64 ampdu_ack_map;
Johannes Berg6b301cd2007-09-18 17:29:20 -0400408 int ack_signal;
Jiri Bencf0706e82007-05-05 11:45:53 -0700409};
410
Johannes Berg6b301cd2007-09-18 17:29:20 -0400411/**
412 * enum ieee80211_conf_flags - configuration flags
413 *
414 * Flags to define PHY configuration options
415 *
416 * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time
417 * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported)
Ron Rindjunsky10816d42007-11-26 16:14:30 +0200418 * @IEEE80211_CONF_SUPPORT_HT_MODE: use 802.11n HT capabilities (if supported)
Johannes Berg6b301cd2007-09-18 17:29:20 -0400419 */
420enum ieee80211_conf_flags {
Ron Rindjunsky10816d42007-11-26 16:14:30 +0200421 IEEE80211_CONF_SHORT_SLOT_TIME = (1<<0),
422 IEEE80211_CONF_RADIOTAP = (1<<1),
423 IEEE80211_CONF_SUPPORT_HT_MODE = (1<<2),
Johannes Berg6b301cd2007-09-18 17:29:20 -0400424};
Jiri Bencf0706e82007-05-05 11:45:53 -0700425
426/**
427 * struct ieee80211_conf - configuration of the device
428 *
429 * This struct indicates how the driver shall configure the hardware.
430 *
431 * @radio_enabled: when zero, driver is required to switch off the radio.
Johannes Berg6b301cd2007-09-18 17:29:20 -0400432 * TODO make a flag
Johannes Berg6b301cd2007-09-18 17:29:20 -0400433 * @beacon_int: beacon interval (TODO make interface config)
434 * @flags: configuration flags defined above
Johannes Berg8318d782008-01-24 19:38:38 +0100435 * @power_level: requested transmit power (in dBm)
436 * @max_antenna_gain: maximum antenna gain (in dBi)
Johannes Berg6b301cd2007-09-18 17:29:20 -0400437 * @antenna_sel_tx: transmit antenna selection, 0: default/diversity,
438 * 1/2: antenna 0/1
439 * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx
Ron Rindjunsky10816d42007-11-26 16:14:30 +0200440 * @ht_conf: describes current self configuration of 802.11n HT capabilies
441 * @ht_bss_conf: describes current BSS configuration of 802.11n HT parameters
Johannes Berg8318d782008-01-24 19:38:38 +0100442 * @channel: the channel to tune to
Jiri Bencf0706e82007-05-05 11:45:53 -0700443 */
444struct ieee80211_conf {
Jiri Bencf0706e82007-05-05 11:45:53 -0700445 int radio_enabled;
446
447 int beacon_int;
Johannes Berg6b301cd2007-09-18 17:29:20 -0400448 u32 flags;
Johannes Berg8318d782008-01-24 19:38:38 +0100449 int power_level;
450 int max_antenna_gain;
Jiri Bencf0706e82007-05-05 11:45:53 -0700451 u8 antenna_sel_tx;
452 u8 antenna_sel_rx;
Ron Rindjunsky10816d42007-11-26 16:14:30 +0200453
Johannes Berg8318d782008-01-24 19:38:38 +0100454 struct ieee80211_channel *channel;
455
Ron Rindjunsky10816d42007-11-26 16:14:30 +0200456 struct ieee80211_ht_info ht_conf;
457 struct ieee80211_ht_bss_info ht_bss_conf;
Jiri Bencf0706e82007-05-05 11:45:53 -0700458};
459
460/**
461 * enum ieee80211_if_types - types of 802.11 network interfaces
462 *
Johannes Berga2897552007-09-28 14:01:25 +0200463 * @IEEE80211_IF_TYPE_INVALID: invalid interface type, not used
464 * by mac80211 itself
Jiri Bencf0706e82007-05-05 11:45:53 -0700465 * @IEEE80211_IF_TYPE_AP: interface in AP mode.
466 * @IEEE80211_IF_TYPE_MGMT: special interface for communication with hostap
467 * daemon. Drivers should never see this type.
468 * @IEEE80211_IF_TYPE_STA: interface in STA (client) mode.
469 * @IEEE80211_IF_TYPE_IBSS: interface in IBSS (ad-hoc) mode.
470 * @IEEE80211_IF_TYPE_MNTR: interface in monitor (rfmon) mode.
471 * @IEEE80211_IF_TYPE_WDS: interface in WDS mode.
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400472 * @IEEE80211_IF_TYPE_VLAN: VLAN interface bound to an AP, drivers
473 * will never see this type.
Johannes Bergdbbea672008-02-26 14:34:06 +0100474 * @IEEE80211_IF_TYPE_MESH_POINT: 802.11s mesh point
Jiri Bencf0706e82007-05-05 11:45:53 -0700475 */
476enum ieee80211_if_types {
Johannes Berga2897552007-09-28 14:01:25 +0200477 IEEE80211_IF_TYPE_INVALID,
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400478 IEEE80211_IF_TYPE_AP,
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400479 IEEE80211_IF_TYPE_STA,
480 IEEE80211_IF_TYPE_IBSS,
Johannes Berg6032f932008-02-23 15:17:07 +0100481 IEEE80211_IF_TYPE_MESH_POINT,
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400482 IEEE80211_IF_TYPE_MNTR,
483 IEEE80211_IF_TYPE_WDS,
484 IEEE80211_IF_TYPE_VLAN,
Jiri Bencf0706e82007-05-05 11:45:53 -0700485};
486
487/**
Johannes Berg32bfd352007-12-19 01:31:26 +0100488 * struct ieee80211_vif - per-interface data
489 *
490 * Data in this structure is continually present for driver
491 * use during the life of a virtual interface.
492 *
Johannes Berg51fb61e2007-12-19 01:31:27 +0100493 * @type: type of this virtual interface
Johannes Berg32bfd352007-12-19 01:31:26 +0100494 * @drv_priv: data area for driver use, will always be aligned to
495 * sizeof(void *).
496 */
497struct ieee80211_vif {
Johannes Berg51fb61e2007-12-19 01:31:27 +0100498 enum ieee80211_if_types type;
Johannes Berg32bfd352007-12-19 01:31:26 +0100499 /* must be last */
500 u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *))));
501};
502
Johannes Berg902acc72008-02-23 15:17:19 +0100503static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif)
504{
505#ifdef CONFIG_MAC80211_MESH
506 return vif->type == IEEE80211_IF_TYPE_MESH_POINT;
507#endif
508 return false;
509}
510
Johannes Berg32bfd352007-12-19 01:31:26 +0100511/**
Jiri Bencf0706e82007-05-05 11:45:53 -0700512 * struct ieee80211_if_init_conf - initial configuration of an interface
513 *
Johannes Berg32bfd352007-12-19 01:31:26 +0100514 * @vif: pointer to a driver-use per-interface structure. The pointer
515 * itself is also used for various functions including
516 * ieee80211_beacon_get() and ieee80211_get_buffered_bc().
Jiri Bencf0706e82007-05-05 11:45:53 -0700517 * @type: one of &enum ieee80211_if_types constants. Determines the type of
518 * added/removed interface.
519 * @mac_addr: pointer to MAC address of the interface. This pointer is valid
520 * until the interface is removed (i.e. it cannot be used after
521 * remove_interface() callback was called for this interface).
522 *
523 * This structure is used in add_interface() and remove_interface()
524 * callbacks of &struct ieee80211_hw.
Johannes Berg4480f15c2007-07-10 19:32:10 +0200525 *
526 * When you allow multiple interfaces to be added to your PHY, take care
527 * that the hardware can actually handle multiple MAC addresses. However,
528 * also take care that when there's no interface left with mac_addr != %NULL
529 * you remove the MAC address from the device to avoid acknowledging packets
530 * in pure monitor mode.
Jiri Bencf0706e82007-05-05 11:45:53 -0700531 */
532struct ieee80211_if_init_conf {
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400533 enum ieee80211_if_types type;
Johannes Berg32bfd352007-12-19 01:31:26 +0100534 struct ieee80211_vif *vif;
Jiri Bencf0706e82007-05-05 11:45:53 -0700535 void *mac_addr;
536};
537
538/**
539 * struct ieee80211_if_conf - configuration of an interface
540 *
541 * @type: type of the interface. This is always the same as was specified in
542 * &struct ieee80211_if_init_conf. The type of an interface never changes
543 * during the life of the interface; this field is present only for
544 * convenience.
545 * @bssid: BSSID of the network we are associated to/creating.
546 * @ssid: used (together with @ssid_len) by drivers for hardware that
547 * generate beacons independently. The pointer is valid only during the
548 * config_interface() call, so copy the value somewhere if you need
549 * it.
550 * @ssid_len: length of the @ssid field.
Jiri Bencf0706e82007-05-05 11:45:53 -0700551 * @beacon: beacon template. Valid only if @host_gen_beacon_template in
552 * &struct ieee80211_hw is set. The driver is responsible of freeing
553 * the sk_buff.
554 * @beacon_control: tx_control for the beacon template, this field is only
555 * valid when the @beacon field was set.
556 *
557 * This structure is passed to the config_interface() callback of
558 * &struct ieee80211_hw.
559 */
560struct ieee80211_if_conf {
561 int type;
562 u8 *bssid;
563 u8 *ssid;
564 size_t ssid_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700565 struct sk_buff *beacon;
566 struct ieee80211_tx_control *beacon_control;
567};
568
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400569/**
570 * enum ieee80211_key_alg - key algorithm
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400571 * @ALG_WEP: WEP40 or WEP104
572 * @ALG_TKIP: TKIP
573 * @ALG_CCMP: CCMP (AES)
574 */
Johannes Bergea49c352007-09-18 17:29:21 -0400575enum ieee80211_key_alg {
Johannes Berg8f20fc22007-08-28 17:01:54 -0400576 ALG_WEP,
577 ALG_TKIP,
578 ALG_CCMP,
Johannes Bergea49c352007-09-18 17:29:21 -0400579};
Jiri Bencf0706e82007-05-05 11:45:53 -0700580
Johannes Berg11a843b2007-08-28 17:01:55 -0400581
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400582/**
583 * enum ieee80211_key_flags - key flags
584 *
585 * These flags are used for communication about keys between the driver
586 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf.
587 *
588 * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates
589 * that the STA this key will be used with could be using QoS.
590 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the
591 * driver to indicate that it requires IV generation for this
592 * particular key.
593 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by
594 * the driver for a TKIP key if it requires Michael MIC
595 * generation in software.
Ivo van Doornc6adbd22008-04-17 21:11:18 +0200596 * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates
597 * that the key is pairwise rather then a shared key.
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400598 */
599enum ieee80211_key_flags {
600 IEEE80211_KEY_FLAG_WMM_STA = 1<<0,
601 IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1,
602 IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2,
Ivo van Doornc6adbd22008-04-17 21:11:18 +0200603 IEEE80211_KEY_FLAG_PAIRWISE = 1<<3,
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400604};
605
606/**
607 * struct ieee80211_key_conf - key information
608 *
609 * This key information is given by mac80211 to the driver by
610 * the set_key() callback in &struct ieee80211_ops.
611 *
612 * @hw_key_idx: To be set by the driver, this is the key index the driver
613 * wants to be given when a frame is transmitted and needs to be
Johannes Berg6a7664d2007-09-14 11:10:25 -0400614 * encrypted in hardware.
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400615 * @alg: The key algorithm.
616 * @flags: key flags, see &enum ieee80211_key_flags.
617 * @keyidx: the key index (0-3)
618 * @keylen: key material length
619 * @key: key material
620 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700621struct ieee80211_key_conf {
Johannes Bergea49c352007-09-18 17:29:21 -0400622 enum ieee80211_key_alg alg;
Johannes Berg6a7664d2007-09-14 11:10:25 -0400623 u8 hw_key_idx;
Johannes Berg11a843b2007-08-28 17:01:55 -0400624 u8 flags;
Johannes Berg11a843b2007-08-28 17:01:55 -0400625 s8 keyidx;
Johannes Berg11a843b2007-08-28 17:01:55 -0400626 u8 keylen;
Jiri Bencf0706e82007-05-05 11:45:53 -0700627 u8 key[0];
628};
629
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400630/**
631 * enum set_key_cmd - key command
632 *
633 * Used with the set_key() callback in &struct ieee80211_ops, this
634 * indicates whether a key is being removed or added.
635 *
636 * @SET_KEY: a key is set
637 * @DISABLE_KEY: a key must be disabled
638 */
Johannes Bergea49c352007-09-18 17:29:21 -0400639enum set_key_cmd {
Johannes Berg11a843b2007-08-28 17:01:55 -0400640 SET_KEY, DISABLE_KEY,
Johannes Bergea49c352007-09-18 17:29:21 -0400641};
Jiri Bencf0706e82007-05-05 11:45:53 -0700642
Tomas Winkler478f8d22007-09-30 13:52:37 +0200643/**
644 * enum sta_notify_cmd - sta notify command
645 *
646 * Used with the sta_notify() callback in &struct ieee80211_ops, this
647 * indicates addition and removal of a station to station table
648 *
649 * @STA_NOTIFY_ADD: a station was added to the station table
650 * @STA_NOTIFY_REMOVE: a station being removed from the station table
651 */
652enum sta_notify_cmd {
653 STA_NOTIFY_ADD, STA_NOTIFY_REMOVE
654};
Johannes Berg1bc08262007-09-18 17:29:15 -0400655
656/**
Emmanuel Grumbach5d2cdcd2008-03-20 15:06:41 +0200657 * enum ieee80211_tkip_key_type - get tkip key
658 *
659 * Used by drivers which need to get a tkip key for skb. Some drivers need a
660 * phase 1 key, others need a phase 2 key. A single function allows the driver
661 * to get the key, this enum indicates what type of key is required.
662 *
663 * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key
664 * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key
665 */
666enum ieee80211_tkip_key_type {
667 IEEE80211_TKIP_P1_KEY,
668 IEEE80211_TKIP_P2_KEY,
669};
670
671/**
Johannes Berg1bc08262007-09-18 17:29:15 -0400672 * enum ieee80211_hw_flags - hardware flags
673 *
674 * These flags are used to indicate hardware capabilities to
675 * the stack. Generally, flags here should have their meaning
676 * done in a way that the simplest hardware doesn't need setting
677 * any particular flags. There are some exceptions to this rule,
678 * however, so you are advised to review these flags carefully.
679 *
680 * @IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE:
681 * The device only needs to be supplied with a beacon template.
682 * If you need the host to generate each beacon then don't use
683 * this flag and call ieee80211_beacon_get() when you need the
684 * next beacon frame. Note that if you set this flag, you must
685 * implement the set_tim() callback for powersave mode to work
686 * properly.
687 * This flag is only relevant for access-point mode.
688 *
689 * @IEEE80211_HW_RX_INCLUDES_FCS:
690 * Indicates that received frames passed to the stack include
691 * the FCS at the end.
692 *
693 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING:
694 * Some wireless LAN chipsets buffer broadcast/multicast frames
695 * for power saving stations in the hardware/firmware and others
696 * rely on the host system for such buffering. This option is used
697 * to configure the IEEE 802.11 upper layer to buffer broadcast and
698 * multicast frames when there are power saving stations so that
699 * the driver can fetch them with ieee80211_get_buffered_bc(). Note
700 * that not setting this flag works properly only when the
701 * %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is also not set because
702 * otherwise the stack will not know when the DTIM beacon was sent.
703 *
Johannes Berg8318d782008-01-24 19:38:38 +0100704 * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE:
705 * Hardware is not capable of short slot operation on the 2.4 GHz band.
706 *
707 * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE:
708 * Hardware is not capable of receiving frames with short preamble on
709 * the 2.4 GHz band.
Bruno Randolf566bfe52008-05-08 19:15:40 +0200710 *
711 * @IEEE80211_HW_SIGNAL_UNSPEC:
712 * Hardware can provide signal values but we don't know its units. We
713 * expect values between 0 and @max_signal.
714 * If possible please provide dB or dBm instead.
715 *
716 * @IEEE80211_HW_SIGNAL_DB:
717 * Hardware gives signal values in dB, decibel difference from an
718 * arbitrary, fixed reference. We expect values between 0 and @max_signal.
719 * If possible please provide dBm instead.
720 *
721 * @IEEE80211_HW_SIGNAL_DBM:
722 * Hardware gives signal values in dBm, decibel difference from
723 * one milliwatt. This is the preferred method since it is standardized
724 * between different devices. @max_signal does not need to be set.
725 *
726 * @IEEE80211_HW_NOISE_DBM:
727 * Hardware can provide noise (radio interference) values in units dBm,
728 * decibel difference from one milliwatt.
Johannes Berg1bc08262007-09-18 17:29:15 -0400729 */
730enum ieee80211_hw_flags {
731 IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE = 1<<0,
732 IEEE80211_HW_RX_INCLUDES_FCS = 1<<1,
733 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2,
Johannes Berg8318d782008-01-24 19:38:38 +0100734 IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3,
735 IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4,
Bruno Randolf566bfe52008-05-08 19:15:40 +0200736 IEEE80211_HW_SIGNAL_UNSPEC = 1<<5,
737 IEEE80211_HW_SIGNAL_DB = 1<<6,
738 IEEE80211_HW_SIGNAL_DBM = 1<<7,
739 IEEE80211_HW_NOISE_DBM = 1<<8,
Johannes Berg1bc08262007-09-18 17:29:15 -0400740};
741
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400742/**
743 * struct ieee80211_hw - hardware information and state
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400744 *
745 * This structure contains the configuration and hardware
746 * information for an 802.11 PHY.
747 *
748 * @wiphy: This points to the &struct wiphy allocated for this
749 * 802.11 PHY. You must fill in the @perm_addr and @dev
750 * members of this structure using SET_IEEE80211_DEV()
Johannes Berg8318d782008-01-24 19:38:38 +0100751 * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported
752 * bands (with channels, bitrates) are registered here.
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400753 *
754 * @conf: &struct ieee80211_conf, device configuration, don't use.
755 *
756 * @workqueue: single threaded workqueue available for driver use,
757 * allocated by mac80211 on registration and flushed on
758 * unregistration.
759 *
760 * @priv: pointer to private area that was allocated for driver use
761 * along with this structure.
762 *
763 * @flags: hardware flags, see &enum ieee80211_hw_flags.
764 *
765 * @extra_tx_headroom: headroom to reserve in each transmit skb
766 * for use by the driver (e.g. for transmit headers.)
767 *
768 * @channel_change_time: time (in microseconds) it takes to change channels.
769 *
Bruno Randolf566bfe52008-05-08 19:15:40 +0200770 * @max_signal: Maximum value for signal (rssi) in RX information, used
771 * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400772 *
773 * @queues: number of available hardware transmit queues for
Johannes Berge100bb62008-04-30 18:51:21 +0200774 * data packets. WMM/QoS requires at least four, these
775 * queues need to have configurable access parameters.
776 *
777 * @ampdu_queues: number of available hardware transmit queues
778 * for A-MPDU packets, these have no access parameters
779 * because they're used only for A-MPDU frames. Note that
780 * mac80211 will not currently use any of the regular queues
781 * for aggregation.
Johannes Berg830f9032007-10-28 14:51:05 +0100782 *
783 * @rate_control_algorithm: rate control algorithm for this hardware.
784 * If unset (NULL), the default algorithm will be used. Must be
785 * set before calling ieee80211_register_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +0100786 *
787 * @vif_data_size: size (in bytes) of the drv_priv data area
788 * within &struct ieee80211_vif.
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400789 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700790struct ieee80211_hw {
Jiri Bencf0706e82007-05-05 11:45:53 -0700791 struct ieee80211_conf conf;
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400792 struct wiphy *wiphy;
Jiri Bencf0706e82007-05-05 11:45:53 -0700793 struct workqueue_struct *workqueue;
Johannes Berg830f9032007-10-28 14:51:05 +0100794 const char *rate_control_algorithm;
Jiri Bencf0706e82007-05-05 11:45:53 -0700795 void *priv;
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400796 u32 flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700797 unsigned int extra_tx_headroom;
Jiri Bencf0706e82007-05-05 11:45:53 -0700798 int channel_change_time;
Johannes Berg32bfd352007-12-19 01:31:26 +0100799 int vif_data_size;
Johannes Berge100bb62008-04-30 18:51:21 +0200800 u16 queues, ampdu_queues;
Jiri Bencf0706e82007-05-05 11:45:53 -0700801 s8 max_signal;
Jiri Bencf0706e82007-05-05 11:45:53 -0700802};
803
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400804/**
805 * SET_IEEE80211_DEV - set device for 802.11 hardware
806 *
807 * @hw: the &struct ieee80211_hw to set the device for
808 * @dev: the &struct device of this 802.11 device
809 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700810static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev)
811{
812 set_wiphy_dev(hw->wiphy, dev);
813}
814
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400815/**
816 * SET_IEEE80211_PERM_ADDR - set the permanenet MAC address for 802.11 hardware
817 *
818 * @hw: the &struct ieee80211_hw to set the MAC address for
819 * @addr: the address to set
820 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700821static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr)
822{
823 memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN);
824}
825
Johannes Berg2e92e6f2008-05-15 12:55:27 +0200826static inline struct ieee80211_rate *
827ieee80211_get_tx_rate(const struct ieee80211_hw *hw,
828 const struct ieee80211_tx_control *c)
829{
830 if (WARN_ON(c->tx_rate_idx < 0))
831 return NULL;
832 return &hw->wiphy->bands[c->band]->bitrates[c->tx_rate_idx];
833}
834
835static inline struct ieee80211_rate *
836ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw,
837 const struct ieee80211_tx_control *c)
838{
839 if (c->rts_cts_rate_idx < 0)
840 return NULL;
841 return &hw->wiphy->bands[c->band]->bitrates[c->rts_cts_rate_idx];
842}
843
844static inline struct ieee80211_rate *
845ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw,
846 const struct ieee80211_tx_control *c)
847{
848 if (c->alt_retry_rate_idx < 0)
849 return NULL;
850 return &hw->wiphy->bands[c->band]->bitrates[c->alt_retry_rate_idx];
851}
852
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400853/**
854 * DOC: Hardware crypto acceleration
Johannes Berg4150c572007-09-17 01:29:23 -0400855 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400856 * mac80211 is capable of taking advantage of many hardware
857 * acceleration designs for encryption and decryption operations.
858 *
859 * The set_key() callback in the &struct ieee80211_ops for a given
860 * device is called to enable hardware acceleration of encryption and
861 * decryption. The callback takes an @address parameter that will be
862 * the broadcast address for default keys, the other station's hardware
863 * address for individual keys or the zero address for keys that will
864 * be used only for transmission.
865 * Multiple transmission keys with the same key index may be used when
866 * VLANs are configured for an access point.
867 *
868 * The @local_address parameter will always be set to our own address,
869 * this is only relevant if you support multiple local addresses.
870 *
871 * When transmitting, the TX control data will use the @hw_key_idx
872 * selected by the driver by modifying the &struct ieee80211_key_conf
873 * pointed to by the @key parameter to the set_key() function.
874 *
875 * The set_key() call for the %SET_KEY command should return 0 if
876 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be
877 * added; if you return 0 then hw_key_idx must be assigned to the
878 * hardware key index, you are free to use the full u8 range.
879 *
880 * When the cmd is %DISABLE_KEY then it must succeed.
881 *
882 * Note that it is permissible to not decrypt a frame even if a key
883 * for it has been uploaded to hardware, the stack will not make any
884 * decision based on whether a key has been uploaded or not but rather
885 * based on the receive flags.
886 *
887 * The &struct ieee80211_key_conf structure pointed to by the @key
888 * parameter is guaranteed to be valid until another call to set_key()
889 * removes it, but it can only be used as a cookie to differentiate
890 * keys.
Emmanuel Grumbach9ae4fda2008-03-20 15:06:42 +0200891 *
892 * In TKIP some HW need to be provided a phase 1 key, for RX decryption
893 * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key
894 * handler.
895 * The update_tkip_key() call updates the driver with the new phase 1 key.
896 * This happens everytime the iv16 wraps around (every 65536 packets). The
897 * set_key() call will happen only once for each key (unless the AP did
898 * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is
899 * provided by udpate_tkip_key only. The trigger that makes mac80211 call this
900 * handler is software decryption with wrap around of iv16.
Johannes Berg4150c572007-09-17 01:29:23 -0400901 */
Johannes Berg4150c572007-09-17 01:29:23 -0400902
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400903/**
904 * DOC: Frame filtering
905 *
906 * mac80211 requires to see many management frames for proper
907 * operation, and users may want to see many more frames when
908 * in monitor mode. However, for best CPU usage and power consumption,
909 * having as few frames as possible percolate through the stack is
910 * desirable. Hence, the hardware should filter as much as possible.
911 *
912 * To achieve this, mac80211 uses filter flags (see below) to tell
913 * the driver's configure_filter() function which frames should be
914 * passed to mac80211 and which should be filtered out.
915 *
916 * The configure_filter() callback is invoked with the parameters
917 * @mc_count and @mc_list for the combined multicast address list
918 * of all virtual interfaces, @changed_flags telling which flags
919 * were changed and @total_flags with the new flag states.
920 *
921 * If your device has no multicast address filters your driver will
922 * need to check both the %FIF_ALLMULTI flag and the @mc_count
923 * parameter to see whether multicast frames should be accepted
924 * or dropped.
925 *
Michael Bueschd0f5afb2008-02-12 20:12:45 +0100926 * All unsupported flags in @total_flags must be cleared.
927 * Hardware does not support a flag if it is incapable of _passing_
928 * the frame to the stack. Otherwise the driver must ignore
929 * the flag, but not clear it.
930 * You must _only_ clear the flag (announce no support for the
931 * flag to mac80211) if you are not able to pass the packet type
932 * to the stack (so the hardware always filters it).
933 * So for example, you should clear @FIF_CONTROL, if your hardware
934 * always filters control frames. If your hardware always passes
935 * control frames to the kernel and is incapable of filtering them,
936 * you do _not_ clear the @FIF_CONTROL flag.
937 * This rule applies to all other FIF flags as well.
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400938 */
939
940/**
941 * enum ieee80211_filter_flags - hardware filter flags
942 *
943 * These flags determine what the filter in hardware should be
944 * programmed to let through and what should not be passed to the
945 * stack. It is always safe to pass more frames than requested,
946 * but this has negative impact on power consumption.
947 *
948 * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS,
949 * think of the BSS as your network segment and then this corresponds
950 * to the regular ethernet device promiscuous mode.
951 *
952 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested
953 * by the user or if the hardware is not capable of filtering by
954 * multicast address.
955 *
956 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the
957 * %RX_FLAG_FAILED_FCS_CRC for them)
958 *
959 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set
960 * the %RX_FLAG_FAILED_PLCP_CRC for them
961 *
962 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate
963 * to the hardware that it should not filter beacons or probe responses
964 * by BSSID. Filtering them can greatly reduce the amount of processing
965 * mac80211 needs to do and the amount of CPU wakeups, so you should
966 * honour this flag if possible.
967 *
968 * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then
969 * only those addressed to this station
970 *
971 * @FIF_OTHER_BSS: pass frames destined to other BSSes
972 */
973enum ieee80211_filter_flags {
974 FIF_PROMISC_IN_BSS = 1<<0,
975 FIF_ALLMULTI = 1<<1,
976 FIF_FCSFAIL = 1<<2,
977 FIF_PLCPFAIL = 1<<3,
978 FIF_BCN_PRBRESP_PROMISC = 1<<4,
979 FIF_CONTROL = 1<<5,
980 FIF_OTHER_BSS = 1<<6,
981};
982
983/**
Ron Rindjunsky1b7d03a2007-12-25 17:00:31 +0200984 * enum ieee80211_ampdu_mlme_action - A-MPDU actions
985 *
986 * These flags are used with the ampdu_action() callback in
987 * &struct ieee80211_ops to indicate which action is needed.
988 * @IEEE80211_AMPDU_RX_START: start Rx aggregation
989 * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation
Ron Rindjunsky0df3ef42008-01-28 14:07:15 +0200990 * @IEEE80211_AMPDU_TX_START: start Tx aggregation
991 * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation
Ron Rindjunsky1b7d03a2007-12-25 17:00:31 +0200992 */
993enum ieee80211_ampdu_mlme_action {
994 IEEE80211_AMPDU_RX_START,
995 IEEE80211_AMPDU_RX_STOP,
Ron Rindjunsky0df3ef42008-01-28 14:07:15 +0200996 IEEE80211_AMPDU_TX_START,
997 IEEE80211_AMPDU_TX_STOP,
Ron Rindjunsky1b7d03a2007-12-25 17:00:31 +0200998};
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400999
1000/**
1001 * struct ieee80211_ops - callbacks from mac80211 to the driver
1002 *
1003 * This structure contains various callbacks that the driver may
1004 * handle or, in some cases, must handle, for example to configure
1005 * the hardware to a new channel or to transmit a frame.
1006 *
1007 * @tx: Handler that 802.11 module calls for each transmitted frame.
1008 * skb contains the buffer starting from the IEEE 802.11 header.
1009 * The low-level driver should send the frame out based on
1010 * configuration in the TX control data. Must be implemented and
1011 * atomic.
1012 *
1013 * @start: Called before the first netdevice attached to the hardware
1014 * is enabled. This should turn on the hardware and must turn on
1015 * frame reception (for possibly enabled monitor interfaces.)
1016 * Returns negative error codes, these may be seen in userspace,
1017 * or zero.
1018 * When the device is started it should not have a MAC address
1019 * to avoid acknowledging frames before a non-monitor device
1020 * is added.
1021 * Must be implemented.
1022 *
1023 * @stop: Called after last netdevice attached to the hardware
1024 * is disabled. This should turn off the hardware (at least
1025 * it must turn off frame reception.)
1026 * May be called right after add_interface if that rejects
1027 * an interface.
1028 * Must be implemented.
1029 *
1030 * @add_interface: Called when a netdevice attached to the hardware is
1031 * enabled. Because it is not called for monitor mode devices, @open
1032 * and @stop must be implemented.
1033 * The driver should perform any initialization it needs before
1034 * the device can be enabled. The initial configuration for the
1035 * interface is given in the conf parameter.
1036 * The callback may refuse to add an interface by returning a
1037 * negative error code (which will be seen in userspace.)
1038 * Must be implemented.
1039 *
1040 * @remove_interface: Notifies a driver that an interface is going down.
1041 * The @stop callback is called after this if it is the last interface
1042 * and no monitor interfaces are present.
1043 * When all interfaces are removed, the MAC address in the hardware
1044 * must be cleared so the device no longer acknowledges packets,
1045 * the mac_addr member of the conf structure is, however, set to the
1046 * MAC address of the device going away.
1047 * Hence, this callback must be implemented.
1048 *
1049 * @config: Handler for configuration requests. IEEE 802.11 code calls this
1050 * function to change hardware configuration, e.g., channel.
1051 *
1052 * @config_interface: Handler for configuration requests related to interfaces
1053 * (e.g. BSSID changes.)
1054 *
Johannes Berg471b3ef2007-12-28 14:32:58 +01001055 * @bss_info_changed: Handler for configuration requests related to BSS
1056 * parameters that may vary during BSS's lifespan, and may affect low
1057 * level driver (e.g. assoc/disassoc status, erp parameters).
1058 * This function should not be used if no BSS has been set, unless
1059 * for association indication. The @changed parameter indicates which
Reinette Chatred18ef292008-04-09 16:56:15 -07001060 * of the bss parameters has changed when a call is made.
Johannes Berg471b3ef2007-12-28 14:32:58 +01001061 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001062 * @configure_filter: Configure the device's RX filter.
1063 * See the section "Frame filtering" for more information.
1064 * This callback must be implemented and atomic.
1065 *
1066 * @set_tim: Set TIM bit. If the hardware/firmware takes care of beacon
1067 * generation (that is, %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is set)
1068 * mac80211 calls this function when a TIM bit must be set or cleared
1069 * for a given AID. Must be atomic.
1070 *
1071 * @set_key: See the section "Hardware crypto acceleration"
1072 * This callback can sleep, and is only called between add_interface
1073 * and remove_interface calls, i.e. while the interface with the
1074 * given local_address is enabled.
1075 *
Emmanuel Grumbach9ae4fda2008-03-20 15:06:42 +02001076 * @update_tkip_key: See the section "Hardware crypto acceleration"
1077 * This callback will be called in the context of Rx. Called for drivers
1078 * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY.
1079 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001080 * @hw_scan: Ask the hardware to service the scan request, no need to start
Johannes Berg8318d782008-01-24 19:38:38 +01001081 * the scan state machine in stack. The scan must honour the channel
1082 * configuration done by the regulatory agent in the wiphy's registered
1083 * bands.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001084 *
1085 * @get_stats: return low-level statistics
1086 *
Johannes Berg62da92f2007-12-19 02:03:31 +01001087 * @get_tkip_seq: If your device implements TKIP encryption in hardware this
1088 * callback should be provided to read the TKIP transmit IVs (both IV32
1089 * and IV16) for the given key from hardware.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001090 *
1091 * @set_rts_threshold: Configuration of RTS threshold (if device needs it)
1092 *
1093 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this if
1094 * the device does fragmentation by itself; if this method is assigned then
1095 * the stack will not do fragmentation.
1096 *
1097 * @set_retry_limit: Configuration of retry limits (if device needs it)
1098 *
Tomas Winkler478f8d22007-09-30 13:52:37 +02001099 * @sta_notify: Notifies low level driver about addition or removal
1100 * of assocaited station or AP.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001101 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001102 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
Johannes Berge100bb62008-04-30 18:51:21 +02001103 * bursting) for a hardware TX queue. Must be atomic.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001104 *
1105 * @get_tx_stats: Get statistics of the current TX queue status. This is used
1106 * to get number of currently queued packets (queue length), maximum queue
1107 * size (limit), and total number of packets sent using each TX queue
Johannes Berg57ffc582008-04-29 17:18:59 +02001108 * (count). The 'stats' pointer points to an array that has hw->queues +
1109 * hw->ampdu_queues items.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001110 *
1111 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently,
1112 * this is only used for IBSS mode debugging and, as such, is not a
1113 * required function. Must be atomic.
1114 *
1115 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize
1116 * with other STAs in the IBSS. This is only used in IBSS mode. This
1117 * function is optional if the firmware/hardware takes full care of
1118 * TSF synchronization.
1119 *
1120 * @beacon_update: Setup beacon data for IBSS beacons. Unlike access point,
1121 * IBSS uses a fixed beacon frame which is configured using this
Michael Buesch5ecc2a52007-10-02 12:17:56 +02001122 * function.
1123 * If the driver returns success (0) from this callback, it owns
1124 * the skb. That means the driver is responsible to kfree_skb() it.
1125 * The control structure is not dynamically allocated. That means the
1126 * driver does not own the pointer and if it needs it somewhere
1127 * outside of the context of this function, it must copy it
1128 * somewhere else.
1129 * This handler is required only for IBSS mode.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001130 *
1131 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us.
1132 * This is needed only for IBSS mode and the result of this function is
1133 * used to determine whether to reply to Probe Requests.
Ron Rindjunskyd3c990f2007-11-26 16:14:34 +02001134 *
1135 * @conf_ht: Configures low level driver with 802.11n HT data. Must be atomic.
Ron Rindjunsky1b7d03a2007-12-25 17:00:31 +02001136 *
1137 * @ampdu_action: Perform a certain A-MPDU action
1138 * The RA/TID combination determines the destination and TID we want
1139 * the ampdu action to be performed for. The action is defined through
1140 * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn)
Ron Rindjunsky0df3ef42008-01-28 14:07:15 +02001141 * is the first frame we expect to perform the action on. notice
1142 * that TX/RX_STOP can pass NULL for this parameter.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001143 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001144struct ieee80211_ops {
Jiri Bencf0706e82007-05-05 11:45:53 -07001145 int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb,
1146 struct ieee80211_tx_control *control);
Johannes Berg4150c572007-09-17 01:29:23 -04001147 int (*start)(struct ieee80211_hw *hw);
Johannes Berg4150c572007-09-17 01:29:23 -04001148 void (*stop)(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001149 int (*add_interface)(struct ieee80211_hw *hw,
1150 struct ieee80211_if_init_conf *conf);
Jiri Bencf0706e82007-05-05 11:45:53 -07001151 void (*remove_interface)(struct ieee80211_hw *hw,
1152 struct ieee80211_if_init_conf *conf);
Jiri Bencf0706e82007-05-05 11:45:53 -07001153 int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
Jiri Bencf0706e82007-05-05 11:45:53 -07001154 int (*config_interface)(struct ieee80211_hw *hw,
Johannes Berg32bfd352007-12-19 01:31:26 +01001155 struct ieee80211_vif *vif,
1156 struct ieee80211_if_conf *conf);
Johannes Berg471b3ef2007-12-28 14:32:58 +01001157 void (*bss_info_changed)(struct ieee80211_hw *hw,
1158 struct ieee80211_vif *vif,
1159 struct ieee80211_bss_conf *info,
1160 u32 changed);
Johannes Berg4150c572007-09-17 01:29:23 -04001161 void (*configure_filter)(struct ieee80211_hw *hw,
1162 unsigned int changed_flags,
1163 unsigned int *total_flags,
1164 int mc_count, struct dev_addr_list *mc_list);
Jiri Bencf0706e82007-05-05 11:45:53 -07001165 int (*set_tim)(struct ieee80211_hw *hw, int aid, int set);
Johannes Bergea49c352007-09-18 17:29:21 -04001166 int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd,
Johannes Berg11a843b2007-08-28 17:01:55 -04001167 const u8 *local_address, const u8 *address,
1168 struct ieee80211_key_conf *key);
Emmanuel Grumbach9ae4fda2008-03-20 15:06:42 +02001169 void (*update_tkip_key)(struct ieee80211_hw *hw,
1170 struct ieee80211_key_conf *conf, const u8 *address,
1171 u32 iv32, u16 *phase1key);
Jiri Bencf0706e82007-05-05 11:45:53 -07001172 int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
Jiri Bencf0706e82007-05-05 11:45:53 -07001173 int (*get_stats)(struct ieee80211_hw *hw,
1174 struct ieee80211_low_level_stats *stats);
Johannes Berg62da92f2007-12-19 02:03:31 +01001175 void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx,
1176 u32 *iv32, u16 *iv16);
Jiri Bencf0706e82007-05-05 11:45:53 -07001177 int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value);
Jiri Bencf0706e82007-05-05 11:45:53 -07001178 int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value);
Jiri Bencf0706e82007-05-05 11:45:53 -07001179 int (*set_retry_limit)(struct ieee80211_hw *hw,
1180 u32 short_retry, u32 long_retr);
Johannes Berg32bfd352007-12-19 01:31:26 +01001181 void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
Tomas Winkler478f8d22007-09-30 13:52:37 +02001182 enum sta_notify_cmd, const u8 *addr);
Johannes Berge100bb62008-04-30 18:51:21 +02001183 int (*conf_tx)(struct ieee80211_hw *hw, u16 queue,
Jiri Bencf0706e82007-05-05 11:45:53 -07001184 const struct ieee80211_tx_queue_params *params);
Jiri Bencf0706e82007-05-05 11:45:53 -07001185 int (*get_tx_stats)(struct ieee80211_hw *hw,
1186 struct ieee80211_tx_queue_stats *stats);
Jiri Bencf0706e82007-05-05 11:45:53 -07001187 u64 (*get_tsf)(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001188 void (*reset_tsf)(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001189 int (*beacon_update)(struct ieee80211_hw *hw,
1190 struct sk_buff *skb,
1191 struct ieee80211_tx_control *control);
Jiri Bencf0706e82007-05-05 11:45:53 -07001192 int (*tx_last_beacon)(struct ieee80211_hw *hw);
Ron Rindjunsky1b7d03a2007-12-25 17:00:31 +02001193 int (*ampdu_action)(struct ieee80211_hw *hw,
1194 enum ieee80211_ampdu_mlme_action action,
Ron Rindjunsky0df3ef42008-01-28 14:07:15 +02001195 const u8 *addr, u16 tid, u16 *ssn);
Jiri Bencf0706e82007-05-05 11:45:53 -07001196};
1197
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001198/**
1199 * ieee80211_alloc_hw - Allocate a new hardware device
1200 *
1201 * This must be called once for each hardware device. The returned pointer
1202 * must be used to refer to this device when calling other functions.
1203 * mac80211 allocates a private data area for the driver pointed to by
1204 * @priv in &struct ieee80211_hw, the size of this area is given as
1205 * @priv_data_len.
1206 *
1207 * @priv_data_len: length of private data
1208 * @ops: callbacks for this device
Jiri Bencf0706e82007-05-05 11:45:53 -07001209 */
1210struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
1211 const struct ieee80211_ops *ops);
1212
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001213/**
1214 * ieee80211_register_hw - Register hardware device
1215 *
Johannes Bergdbbea672008-02-26 14:34:06 +01001216 * You must call this function before any other functions in
1217 * mac80211. Note that before a hardware can be registered, you
1218 * need to fill the contained wiphy's information.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001219 *
1220 * @hw: the device to register as returned by ieee80211_alloc_hw()
1221 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001222int ieee80211_register_hw(struct ieee80211_hw *hw);
1223
Jiri Bencf0706e82007-05-05 11:45:53 -07001224#ifdef CONFIG_MAC80211_LEDS
1225extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw);
1226extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw);
Michael Buesch47f0c502007-09-27 15:10:44 +02001227extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw);
Ivo van Doorncdcb0062008-01-07 19:45:24 +01001228extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001229#endif
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001230/**
1231 * ieee80211_get_tx_led_name - get name of TX LED
1232 *
1233 * mac80211 creates a transmit LED trigger for each wireless hardware
1234 * that can be used to drive LEDs if your driver registers a LED device.
1235 * This function returns the name (or %NULL if not configured for LEDs)
1236 * of the trigger so you can automatically link the LED device.
1237 *
1238 * @hw: the hardware to get the LED trigger name for
1239 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001240static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
1241{
1242#ifdef CONFIG_MAC80211_LEDS
1243 return __ieee80211_get_tx_led_name(hw);
1244#else
1245 return NULL;
1246#endif
1247}
1248
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001249/**
1250 * ieee80211_get_rx_led_name - get name of RX LED
1251 *
1252 * mac80211 creates a receive LED trigger for each wireless hardware
1253 * that can be used to drive LEDs if your driver registers a LED device.
1254 * This function returns the name (or %NULL if not configured for LEDs)
1255 * of the trigger so you can automatically link the LED device.
1256 *
1257 * @hw: the hardware to get the LED trigger name for
1258 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001259static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
1260{
1261#ifdef CONFIG_MAC80211_LEDS
1262 return __ieee80211_get_rx_led_name(hw);
1263#else
1264 return NULL;
1265#endif
1266}
1267
Ivo van Doorncdcb0062008-01-07 19:45:24 +01001268/**
1269 * ieee80211_get_assoc_led_name - get name of association LED
1270 *
1271 * mac80211 creates a association LED trigger for each wireless hardware
1272 * that can be used to drive LEDs if your driver registers a LED device.
1273 * This function returns the name (or %NULL if not configured for LEDs)
1274 * of the trigger so you can automatically link the LED device.
1275 *
1276 * @hw: the hardware to get the LED trigger name for
1277 */
Michael Buesch47f0c502007-09-27 15:10:44 +02001278static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
1279{
1280#ifdef CONFIG_MAC80211_LEDS
1281 return __ieee80211_get_assoc_led_name(hw);
1282#else
1283 return NULL;
1284#endif
1285}
1286
Ivo van Doorncdcb0062008-01-07 19:45:24 +01001287/**
1288 * ieee80211_get_radio_led_name - get name of radio LED
1289 *
1290 * mac80211 creates a radio change LED trigger for each wireless hardware
1291 * that can be used to drive LEDs if your driver registers a LED device.
1292 * This function returns the name (or %NULL if not configured for LEDs)
1293 * of the trigger so you can automatically link the LED device.
1294 *
1295 * @hw: the hardware to get the LED trigger name for
1296 */
1297static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw)
1298{
1299#ifdef CONFIG_MAC80211_LEDS
1300 return __ieee80211_get_radio_led_name(hw);
1301#else
1302 return NULL;
1303#endif
1304}
Michael Buesch47f0c502007-09-27 15:10:44 +02001305
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001306/**
1307 * ieee80211_unregister_hw - Unregister a hardware device
1308 *
1309 * This function instructs mac80211 to free allocated resources
1310 * and unregister netdevices from the networking subsystem.
1311 *
1312 * @hw: the hardware to unregister
1313 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001314void ieee80211_unregister_hw(struct ieee80211_hw *hw);
1315
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001316/**
1317 * ieee80211_free_hw - free hardware descriptor
1318 *
1319 * This function frees everything that was allocated, including the
1320 * private data for the driver. You must call ieee80211_unregister_hw()
1321 * before calling this function
1322 *
1323 * @hw: the hardware to free
1324 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001325void ieee80211_free_hw(struct ieee80211_hw *hw);
1326
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001327/* trick to avoid symbol clashes with the ieee80211 subsystem */
Jiri Bencf0706e82007-05-05 11:45:53 -07001328void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
1329 struct ieee80211_rx_status *status);
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001330
1331/**
1332 * ieee80211_rx - receive frame
1333 *
1334 * Use this function to hand received frames to mac80211. The receive
1335 * buffer in @skb must start with an IEEE 802.11 header or a radiotap
1336 * header if %RX_FLAG_RADIOTAP is set in the @status flags.
1337 *
Johannes Berg2485f712008-02-25 16:27:41 +01001338 * This function may not be called in IRQ context. Calls to this function
1339 * for a single hardware must be synchronized against each other. Calls
1340 * to this function and ieee80211_rx_irqsafe() may not be mixed for a
1341 * single hardware.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001342 *
1343 * @hw: the hardware this frame came in on
1344 * @skb: the buffer to receive, owned by mac80211 after this call
1345 * @status: status of this frame; the status pointer need not be valid
1346 * after this function returns
1347 */
1348static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
1349 struct ieee80211_rx_status *status)
1350{
1351 __ieee80211_rx(hw, skb, status);
1352}
1353
1354/**
1355 * ieee80211_rx_irqsafe - receive frame
1356 *
1357 * Like ieee80211_rx() but can be called in IRQ context
Johannes Berg2485f712008-02-25 16:27:41 +01001358 * (internally defers to a tasklet.)
1359 *
1360 * Calls to this function and ieee80211_rx() may not be mixed for a
1361 * single hardware.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001362 *
1363 * @hw: the hardware this frame came in on
1364 * @skb: the buffer to receive, owned by mac80211 after this call
1365 * @status: status of this frame; the status pointer need not be valid
1366 * after this function returns and is not freed by mac80211,
1367 * it is recommended that it points to a stack area
1368 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001369void ieee80211_rx_irqsafe(struct ieee80211_hw *hw,
1370 struct sk_buff *skb,
1371 struct ieee80211_rx_status *status);
1372
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001373/**
1374 * ieee80211_tx_status - transmit status callback
1375 *
1376 * Call this function for all transmitted frames after they have been
1377 * transmitted. It is permissible to not call this function for
1378 * multicast frames but this can affect statistics.
1379 *
Johannes Berg2485f712008-02-25 16:27:41 +01001380 * This function may not be called in IRQ context. Calls to this function
1381 * for a single hardware must be synchronized against each other. Calls
1382 * to this function and ieee80211_tx_status_irqsafe() may not be mixed
1383 * for a single hardware.
1384 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001385 * @hw: the hardware the frame was transmitted by
1386 * @skb: the frame that was transmitted, owned by mac80211 after this call
1387 * @status: status information for this frame; the status pointer need not
1388 * be valid after this function returns and is not freed by mac80211,
1389 * it is recommended that it points to a stack area
1390 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001391void ieee80211_tx_status(struct ieee80211_hw *hw,
1392 struct sk_buff *skb,
1393 struct ieee80211_tx_status *status);
Johannes Berg2485f712008-02-25 16:27:41 +01001394
1395/**
1396 * ieee80211_tx_status_irqsafe - irq-safe transmit status callback
1397 *
1398 * Like ieee80211_tx_status() but can be called in IRQ context
1399 * (internally defers to a tasklet.)
1400 *
1401 * Calls to this function and ieee80211_tx_status() may not be mixed for a
1402 * single hardware.
1403 *
1404 * @hw: the hardware the frame was transmitted by
1405 * @skb: the frame that was transmitted, owned by mac80211 after this call
1406 * @status: status information for this frame; the status pointer need not
1407 * be valid after this function returns and is not freed by mac80211,
1408 * it is recommended that it points to a stack area
1409 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001410void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
1411 struct sk_buff *skb,
1412 struct ieee80211_tx_status *status);
1413
1414/**
1415 * ieee80211_beacon_get - beacon generation function
1416 * @hw: pointer obtained from ieee80211_alloc_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +01001417 * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001418 * @control: will be filled with information needed to send this beacon.
1419 *
1420 * If the beacon frames are generated by the host system (i.e., not in
1421 * hardware/firmware), the low-level driver uses this function to receive
1422 * the next beacon frame from the 802.11 code. The low-level is responsible
1423 * for calling this function before beacon data is needed (e.g., based on
1424 * hardware interrupt). Returned skb is used only once and low-level driver
1425 * is responsible of freeing it.
1426 */
1427struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
Johannes Berg32bfd352007-12-19 01:31:26 +01001428 struct ieee80211_vif *vif,
Jiri Bencf0706e82007-05-05 11:45:53 -07001429 struct ieee80211_tx_control *control);
1430
1431/**
1432 * ieee80211_rts_get - RTS frame generation function
1433 * @hw: pointer obtained from ieee80211_alloc_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +01001434 * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001435 * @frame: pointer to the frame that is going to be protected by the RTS.
1436 * @frame_len: the frame length (in octets).
1437 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1438 * @rts: The buffer where to store the RTS frame.
1439 *
1440 * If the RTS frames are generated by the host system (i.e., not in
1441 * hardware/firmware), the low-level driver uses this function to receive
1442 * the next RTS frame from the 802.11 code. The low-level is responsible
1443 * for calling this function before and RTS frame is needed.
1444 */
Johannes Berg32bfd352007-12-19 01:31:26 +01001445void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
Jiri Bencf0706e82007-05-05 11:45:53 -07001446 const void *frame, size_t frame_len,
1447 const struct ieee80211_tx_control *frame_txctl,
1448 struct ieee80211_rts *rts);
1449
1450/**
1451 * ieee80211_rts_duration - Get the duration field for an RTS frame
1452 * @hw: pointer obtained from ieee80211_alloc_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +01001453 * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001454 * @frame_len: the length of the frame that is going to be protected by the RTS.
1455 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1456 *
1457 * If the RTS is generated in firmware, but the host system must provide
1458 * the duration field, the low-level driver uses this function to receive
1459 * the duration field value in little-endian byteorder.
1460 */
Johannes Berg32bfd352007-12-19 01:31:26 +01001461__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
1462 struct ieee80211_vif *vif, size_t frame_len,
Jiri Bencf0706e82007-05-05 11:45:53 -07001463 const struct ieee80211_tx_control *frame_txctl);
1464
1465/**
1466 * ieee80211_ctstoself_get - CTS-to-self frame generation function
1467 * @hw: pointer obtained from ieee80211_alloc_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +01001468 * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001469 * @frame: pointer to the frame that is going to be protected by the CTS-to-self.
1470 * @frame_len: the frame length (in octets).
1471 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1472 * @cts: The buffer where to store the CTS-to-self frame.
1473 *
1474 * If the CTS-to-self frames are generated by the host system (i.e., not in
1475 * hardware/firmware), the low-level driver uses this function to receive
1476 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible
1477 * for calling this function before and CTS-to-self frame is needed.
1478 */
Johannes Berg32bfd352007-12-19 01:31:26 +01001479void ieee80211_ctstoself_get(struct ieee80211_hw *hw,
1480 struct ieee80211_vif *vif,
Jiri Bencf0706e82007-05-05 11:45:53 -07001481 const void *frame, size_t frame_len,
1482 const struct ieee80211_tx_control *frame_txctl,
1483 struct ieee80211_cts *cts);
1484
1485/**
1486 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame
1487 * @hw: pointer obtained from ieee80211_alloc_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +01001488 * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001489 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self.
1490 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1491 *
1492 * If the CTS-to-self is generated in firmware, but the host system must provide
1493 * the duration field, the low-level driver uses this function to receive
1494 * the duration field value in little-endian byteorder.
1495 */
Johannes Berg32bfd352007-12-19 01:31:26 +01001496__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
1497 struct ieee80211_vif *vif,
Jiri Bencf0706e82007-05-05 11:45:53 -07001498 size_t frame_len,
1499 const struct ieee80211_tx_control *frame_txctl);
1500
1501/**
1502 * ieee80211_generic_frame_duration - Calculate the duration field for a frame
1503 * @hw: pointer obtained from ieee80211_alloc_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +01001504 * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001505 * @frame_len: the length of the frame.
Johannes Berg8318d782008-01-24 19:38:38 +01001506 * @rate: the rate at which the frame is going to be transmitted.
Jiri Bencf0706e82007-05-05 11:45:53 -07001507 *
1508 * Calculate the duration field of some generic frame, given its
1509 * length and transmission rate (in 100kbps).
1510 */
Johannes Berg32bfd352007-12-19 01:31:26 +01001511__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
1512 struct ieee80211_vif *vif,
Jiri Bencf0706e82007-05-05 11:45:53 -07001513 size_t frame_len,
Johannes Berg8318d782008-01-24 19:38:38 +01001514 struct ieee80211_rate *rate);
Jiri Bencf0706e82007-05-05 11:45:53 -07001515
1516/**
1517 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames
1518 * @hw: pointer as obtained from ieee80211_alloc_hw().
Johannes Berg32bfd352007-12-19 01:31:26 +01001519 * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001520 * @control: will be filled with information needed to send returned frame.
1521 *
1522 * Function for accessing buffered broadcast and multicast frames. If
1523 * hardware/firmware does not implement buffering of broadcast/multicast
1524 * frames when power saving is used, 802.11 code buffers them in the host
1525 * memory. The low-level driver uses this function to fetch next buffered
1526 * frame. In most cases, this is used when generating beacon frame. This
1527 * function returns a pointer to the next buffered skb or NULL if no more
1528 * buffered frames are available.
1529 *
1530 * Note: buffered frames are returned only after DTIM beacon frame was
1531 * generated with ieee80211_beacon_get() and the low-level driver must thus
1532 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns
1533 * NULL if the previous generated beacon was not DTIM, so the low-level driver
1534 * does not need to check for DTIM beacons separately and should be able to
1535 * use common code for all beacons.
1536 */
1537struct sk_buff *
Johannes Berg32bfd352007-12-19 01:31:26 +01001538ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
Jiri Bencf0706e82007-05-05 11:45:53 -07001539 struct ieee80211_tx_control *control);
1540
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001541/**
1542 * ieee80211_get_hdrlen_from_skb - get header length from data
1543 *
1544 * Given an skb with a raw 802.11 header at the data pointer this function
Jiri Bencf0706e82007-05-05 11:45:53 -07001545 * returns the 802.11 header length in bytes (not including encryption
1546 * headers). If the data in the sk_buff is too short to contain a valid 802.11
1547 * header the function returns 0.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001548 *
1549 * @skb: the frame
Jiri Bencf0706e82007-05-05 11:45:53 -07001550 */
1551int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
1552
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001553/**
1554 * ieee80211_get_hdrlen - get header length from frame control
1555 *
1556 * This function returns the 802.11 header length in bytes (not including
1557 * encryption headers.)
1558 *
1559 * @fc: the frame control field (in CPU endianness)
1560 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001561int ieee80211_get_hdrlen(u16 fc);
1562
1563/**
Emmanuel Grumbach5d2cdcd2008-03-20 15:06:41 +02001564 * ieee80211_get_tkip_key - get a TKIP rc4 for skb
1565 *
1566 * This function computes a TKIP rc4 key for an skb. It computes
1567 * a phase 1 key if needed (iv16 wraps around). This function is to
1568 * be used by drivers which can do HW encryption but need to compute
1569 * to phase 1/2 key in SW.
1570 *
1571 * @keyconf: the parameter passed with the set key
1572 * @skb: the skb for which the key is needed
1573 * @rc4key: a buffer to which the key will be written
1574 */
1575void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf,
1576 struct sk_buff *skb,
1577 enum ieee80211_tkip_key_type type, u8 *key);
1578/**
Jiri Bencf0706e82007-05-05 11:45:53 -07001579 * ieee80211_wake_queue - wake specific queue
1580 * @hw: pointer as obtained from ieee80211_alloc_hw().
1581 * @queue: queue number (counted from zero).
1582 *
1583 * Drivers should use this function instead of netif_wake_queue.
1584 */
1585void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue);
1586
1587/**
1588 * ieee80211_stop_queue - stop specific queue
1589 * @hw: pointer as obtained from ieee80211_alloc_hw().
1590 * @queue: queue number (counted from zero).
1591 *
1592 * Drivers should use this function instead of netif_stop_queue.
1593 */
1594void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue);
1595
1596/**
Jiri Bencf0706e82007-05-05 11:45:53 -07001597 * ieee80211_stop_queues - stop all queues
1598 * @hw: pointer as obtained from ieee80211_alloc_hw().
1599 *
1600 * Drivers should use this function instead of netif_stop_queue.
1601 */
1602void ieee80211_stop_queues(struct ieee80211_hw *hw);
1603
1604/**
1605 * ieee80211_wake_queues - wake all queues
1606 * @hw: pointer as obtained from ieee80211_alloc_hw().
1607 *
1608 * Drivers should use this function instead of netif_wake_queue.
1609 */
1610void ieee80211_wake_queues(struct ieee80211_hw *hw);
1611
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001612/**
1613 * ieee80211_scan_completed - completed hardware scan
1614 *
1615 * When hardware scan offload is used (i.e. the hw_scan() callback is
1616 * assigned) this function needs to be called by the driver to notify
1617 * mac80211 that the scan finished.
1618 *
1619 * @hw: the hardware that finished the scan
1620 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001621void ieee80211_scan_completed(struct ieee80211_hw *hw);
1622
Johannes Bergdabeb342007-11-09 01:57:29 +01001623/**
1624 * ieee80211_iterate_active_interfaces - iterate active interfaces
1625 *
1626 * This function iterates over the interfaces associated with a given
1627 * hardware that are currently active and calls the callback for them.
Johannes Bergdabeb342007-11-09 01:57:29 +01001628 *
1629 * @hw: the hardware struct of which the interfaces should be iterated over
Johannes Berge38bad42007-11-28 10:55:32 +01001630 * @iterator: the iterator function to call, cannot sleep
Johannes Bergdabeb342007-11-09 01:57:29 +01001631 * @data: first argument of the iterator function
1632 */
1633void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw,
1634 void (*iterator)(void *data, u8 *mac,
Johannes Berg32bfd352007-12-19 01:31:26 +01001635 struct ieee80211_vif *vif),
Johannes Bergdabeb342007-11-09 01:57:29 +01001636 void *data);
1637
Ron Rindjunsky0df3ef42008-01-28 14:07:15 +02001638/**
1639 * ieee80211_start_tx_ba_session - Start a tx Block Ack session.
1640 * @hw: pointer as obtained from ieee80211_alloc_hw().
1641 * @ra: receiver address of the BA session recipient
1642 * @tid: the TID to BA on.
1643 * @return: success if addBA request was sent, failure otherwise
1644 *
1645 * Although mac80211/low level driver/user space application can estimate
1646 * the need to start aggregation on a certain RA/TID, the session level
1647 * will be managed by the mac80211.
1648 */
1649int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid);
1650
1651/**
1652 * ieee80211_start_tx_ba_cb - low level driver ready to aggregate.
1653 * @hw: pointer as obtained from ieee80211_alloc_hw().
1654 * @ra: receiver address of the BA session recipient.
1655 * @tid: the TID to BA on.
1656 *
1657 * This function must be called by low level driver once it has
1658 * finished with preparations for the BA session.
1659 */
1660void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid);
1661
1662/**
1663 * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate.
1664 * @hw: pointer as obtained from ieee80211_alloc_hw().
1665 * @ra: receiver address of the BA session recipient.
1666 * @tid: the TID to BA on.
1667 *
1668 * This function must be called by low level driver once it has
1669 * finished with preparations for the BA session.
1670 * This version of the function is irq safe.
1671 */
1672void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra,
1673 u16 tid);
1674
1675/**
1676 * ieee80211_stop_tx_ba_session - Stop a Block Ack session.
1677 * @hw: pointer as obtained from ieee80211_alloc_hw().
1678 * @ra: receiver address of the BA session recipient
1679 * @tid: the TID to stop BA.
1680 * @initiator: if indicates initiator DELBA frame will be sent.
1681 * @return: error if no sta with matching da found, success otherwise
1682 *
1683 * Although mac80211/low level driver/user space application can estimate
1684 * the need to stop aggregation on a certain RA/TID, the session level
1685 * will be managed by the mac80211.
1686 */
1687int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
1688 u8 *ra, u16 tid,
1689 enum ieee80211_back_parties initiator);
1690
1691/**
1692 * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate.
1693 * @hw: pointer as obtained from ieee80211_alloc_hw().
1694 * @ra: receiver address of the BA session recipient.
1695 * @tid: the desired TID to BA on.
1696 *
1697 * This function must be called by low level driver once it has
1698 * finished with preparations for the BA session tear down.
1699 */
1700void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid);
1701
1702/**
1703 * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate.
1704 * @hw: pointer as obtained from ieee80211_alloc_hw().
1705 * @ra: receiver address of the BA session recipient.
1706 * @tid: the desired TID to BA on.
1707 *
1708 * This function must be called by low level driver once it has
1709 * finished with preparations for the BA session tear down.
1710 * This version of the function is irq safe.
1711 */
1712void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra,
1713 u16 tid);
1714
Mohamed Abbas84363e62008-04-04 16:59:58 -07001715/**
1716 * ieee80211_notify_mac - low level driver notification
1717 * @hw: pointer as obtained from ieee80211_alloc_hw().
1718 * @notification_types: enum ieee80211_notification_types
1719 *
1720 * This function must be called by low level driver to inform mac80211 of
1721 * low level driver status change or force mac80211 to re-assoc for low
1722 * level driver internal error that require re-assoc.
1723 */
1724void ieee80211_notify_mac(struct ieee80211_hw *hw,
1725 enum ieee80211_notification_types notif_type);
Jiri Bencf0706e82007-05-05 11:45:53 -07001726#endif /* MAC80211_H */