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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 Berg75a5f0c2007-09-18 17:29:20 -040041 * IEEE 802.11 code call after this, e.g. from a scheduled workqueue function.
Jiri Bencf0706e82007-05-05 11:45:53 -070042 */
43
Johannes Berg75a5f0c2007-09-18 17:29:20 -040044/**
45 * DOC: Warning
Jiri Bencf0706e82007-05-05 11:45:53 -070046 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -040047 * If you're reading this document and not the header file itself, it will
48 * be incomplete because not all documentation has been converted yet.
49 */
50
51/**
52 * DOC: Frame format
Jiri Bencf0706e82007-05-05 11:45:53 -070053 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -040054 * As a general rule, when frames are passed between mac80211 and the driver,
55 * they start with the IEEE 802.11 header and include the same octets that are
56 * sent over the air except for the FCS which should be calculated by the
57 * hardware.
58 *
59 * There are, however, various exceptions to this rule for advanced features:
60 *
61 * The first exception is for hardware encryption and decryption offload
62 * where the IV/ICV may or may not be generated in hardware.
63 *
64 * Secondly, when the hardware handles fragmentation, the frame handed to
65 * the driver from mac80211 is the MSDU, not the MPDU.
66 *
67 * Finally, for received frames, the driver is able to indicate that it has
68 * filled a radiotap header and put that in front of the frame; if it does
69 * not do so then mac80211 may add this under certain circumstances.
Jiri Bencf0706e82007-05-05 11:45:53 -070070 */
71
72#define IEEE80211_CHAN_W_SCAN 0x00000001
73#define IEEE80211_CHAN_W_ACTIVE_SCAN 0x00000002
74#define IEEE80211_CHAN_W_IBSS 0x00000004
75
76/* Channel information structure. Low-level driver is expected to fill in chan,
77 * freq, and val fields. Other fields will be filled in by 80211.o based on
78 * hostapd information and low-level driver does not need to use them. The
79 * limits for each channel will be provided in 'struct ieee80211_conf' when
80 * configuring the low-level driver with hw->config callback. If a device has
81 * a default regulatory domain, IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED
82 * can be set to let the driver configure all fields */
83struct ieee80211_channel {
84 short chan; /* channel number (IEEE 802.11) */
85 short freq; /* frequency in MHz */
86 int val; /* hw specific value for the channel */
87 int flag; /* flag for hostapd use (IEEE80211_CHAN_*) */
88 unsigned char power_level;
89 unsigned char antenna_max;
90};
91
92#define IEEE80211_RATE_ERP 0x00000001
93#define IEEE80211_RATE_BASIC 0x00000002
94#define IEEE80211_RATE_PREAMBLE2 0x00000004
95#define IEEE80211_RATE_SUPPORTED 0x00000010
96#define IEEE80211_RATE_OFDM 0x00000020
97#define IEEE80211_RATE_CCK 0x00000040
Jiri Bencf0706e82007-05-05 11:45:53 -070098#define IEEE80211_RATE_MANDATORY 0x00000100
99
100#define IEEE80211_RATE_CCK_2 (IEEE80211_RATE_CCK | IEEE80211_RATE_PREAMBLE2)
101#define IEEE80211_RATE_MODULATION(f) \
102 (f & (IEEE80211_RATE_CCK | IEEE80211_RATE_OFDM))
103
Johannes Bergb708e612007-09-14 11:10:25 -0400104/* Low-level driver should set PREAMBLE2, OFDM and CCK flags.
Jiri Bencf0706e82007-05-05 11:45:53 -0700105 * BASIC, SUPPORTED, ERP, and MANDATORY flags are set in 80211.o based on the
106 * configuration. */
107struct ieee80211_rate {
108 int rate; /* rate in 100 kbps */
109 int val; /* hw specific value for the rate */
110 int flags; /* IEEE80211_RATE_ flags */
111 int val2; /* hw specific value for the rate when using short preamble
112 * (only when IEEE80211_RATE_PREAMBLE2 flag is set, i.e., for
113 * 2, 5.5, and 11 Mbps) */
114 signed char min_rssi_ack;
115 unsigned char min_rssi_ack_delta;
116
117 /* following fields are set by 80211.o and need not be filled by the
118 * low-level driver */
119 int rate_inv; /* inverse of the rate (LCM(all rates) / rate) for
120 * optimizing channel utilization estimates */
121};
122
Johannes Berg6b301cd2007-09-18 17:29:20 -0400123/**
124 * enum ieee80211_phymode - PHY modes
125 *
126 * @MODE_IEEE80211A: 5GHz as defined by 802.11a/802.11h
127 * @MODE_IEEE80211B: 2.4 GHz as defined by 802.11b
128 * @MODE_IEEE80211G: 2.4 GHz as defined by 802.11g (with OFDM),
129 * backwards compatible with 11b mode
130 * @NUM_IEEE80211_MODES: internal
131 */
Johannes Bergb708e612007-09-14 11:10:25 -0400132enum ieee80211_phymode {
Johannes Berg6b301cd2007-09-18 17:29:20 -0400133 MODE_IEEE80211A,
134 MODE_IEEE80211B,
135 MODE_IEEE80211G,
Jiri Bencf0706e82007-05-05 11:45:53 -0700136
137 /* keep last */
138 NUM_IEEE80211_MODES
139};
140
Johannes Berg6b301cd2007-09-18 17:29:20 -0400141/**
142 * struct ieee80211_hw_mode - PHY mode definition
143 *
144 * This structure describes the capabilities supported by the device
145 * in a single PHY mode.
146 *
147 * @mode: the PHY mode for this definition
148 * @num_channels: number of supported channels
149 * @channels: pointer to array of supported channels
150 * @num_rates: number of supported bitrates
151 * @rates: pointer to array of supported bitrates
152 * @list: internal
153 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700154struct ieee80211_hw_mode {
Johannes Berg6b301cd2007-09-18 17:29:20 -0400155 struct list_head list;
156 struct ieee80211_channel *channels;
157 struct ieee80211_rate *rates;
158 enum ieee80211_phymode mode;
159 int num_channels;
160 int num_rates;
Jiri Bencf0706e82007-05-05 11:45:53 -0700161};
162
Johannes Berg6b301cd2007-09-18 17:29:20 -0400163/**
164 * struct ieee80211_tx_queue_params - transmit queue configuration
165 *
166 * The information provided in this structure is required for QoS
167 * transmit queue configuration.
168 *
169 * @aifs: arbitration interface space [0..255, -1: use default]
170 * @cw_min: minimum contention window [will be a value of the form
171 * 2^n-1 in the range 1..1023; 0: use default]
172 * @cw_max: maximum contention window [like @cw_min]
173 * @burst_time: maximum burst time in units of 0.1ms, 0 meaning disabled
174 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700175struct ieee80211_tx_queue_params {
Johannes Berg6b301cd2007-09-18 17:29:20 -0400176 int aifs;
177 int cw_min;
178 int cw_max;
179 int burst_time;
Jiri Bencf0706e82007-05-05 11:45:53 -0700180};
181
Johannes Berg6b301cd2007-09-18 17:29:20 -0400182/**
183 * struct ieee80211_tx_queue_stats_data - transmit queue statistics
184 *
185 * @len: number of packets in queue
186 * @limit: queue length limit
187 * @count: number of frames sent
188 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700189struct ieee80211_tx_queue_stats_data {
Johannes Berg6b301cd2007-09-18 17:29:20 -0400190 unsigned int len;
191 unsigned int limit;
192 unsigned int count;
Jiri Bencf0706e82007-05-05 11:45:53 -0700193};
194
Johannes Berg6b301cd2007-09-18 17:29:20 -0400195/**
196 * enum ieee80211_tx_queue - transmit queue number
197 *
198 * These constants are used with some callbacks that take a
199 * queue number to set parameters for a queue.
200 *
201 * @IEEE80211_TX_QUEUE_DATA0: data queue 0
202 * @IEEE80211_TX_QUEUE_DATA1: data queue 1
203 * @IEEE80211_TX_QUEUE_DATA2: data queue 2
204 * @IEEE80211_TX_QUEUE_DATA3: data queue 3
205 * @IEEE80211_TX_QUEUE_DATA4: data queue 4
206 * @IEEE80211_TX_QUEUE_SVP: ??
207 * @NUM_TX_DATA_QUEUES: number of data queues
208 * @IEEE80211_TX_QUEUE_AFTER_BEACON: transmit queue for frames to be
209 * sent after a beacon
210 * @IEEE80211_TX_QUEUE_BEACON: transmit queue for beacon frames
211 */
212enum ieee80211_tx_queue {
Jiri Bencf0706e82007-05-05 11:45:53 -0700213 IEEE80211_TX_QUEUE_DATA0,
214 IEEE80211_TX_QUEUE_DATA1,
215 IEEE80211_TX_QUEUE_DATA2,
216 IEEE80211_TX_QUEUE_DATA3,
217 IEEE80211_TX_QUEUE_DATA4,
218 IEEE80211_TX_QUEUE_SVP,
219
220 NUM_TX_DATA_QUEUES,
221
222/* due to stupidity in the sub-ioctl userspace interface, the items in
223 * this struct need to have fixed values. As soon as it is removed, we can
224 * fix these entries. */
225 IEEE80211_TX_QUEUE_AFTER_BEACON = 6,
226 IEEE80211_TX_QUEUE_BEACON = 7
227};
228
229struct ieee80211_tx_queue_stats {
230 struct ieee80211_tx_queue_stats_data data[NUM_TX_DATA_QUEUES];
231};
232
233struct ieee80211_low_level_stats {
234 unsigned int dot11ACKFailureCount;
235 unsigned int dot11RTSFailureCount;
236 unsigned int dot11FCSErrorCount;
237 unsigned int dot11RTSSuccessCount;
238};
239
240/* Transmit control fields. This data structure is passed to low-level driver
241 * with each TX frame. The low-level driver is responsible for configuring
242 * the hardware to use given values (depending on what is supported). */
Jiri Bencf0706e82007-05-05 11:45:53 -0700243
244struct ieee80211_tx_control {
245 int tx_rate; /* Transmit rate, given as the hw specific value for the
246 * rate (from struct ieee80211_rate) */
247 int rts_cts_rate; /* Transmit rate for RTS/CTS frame, given as the hw
248 * specific value for the rate (from
249 * struct ieee80211_rate) */
250
251#define IEEE80211_TXCTL_REQ_TX_STATUS (1<<0)/* request TX status callback for
252 * this frame */
253#define IEEE80211_TXCTL_DO_NOT_ENCRYPT (1<<1) /* send this frame without
254 * encryption; e.g., for EAPOL
255 * frames */
256#define IEEE80211_TXCTL_USE_RTS_CTS (1<<2) /* use RTS-CTS before sending
257 * frame */
258#define IEEE80211_TXCTL_USE_CTS_PROTECT (1<<3) /* use CTS protection for the
259 * frame (e.g., for combined
260 * 802.11g / 802.11b networks) */
261#define IEEE80211_TXCTL_NO_ACK (1<<4) /* tell the low level not to
262 * wait for an ack */
263#define IEEE80211_TXCTL_RATE_CTRL_PROBE (1<<5)
264#define IEEE80211_TXCTL_CLEAR_DST_MASK (1<<6)
265#define IEEE80211_TXCTL_REQUEUE (1<<7)
266#define IEEE80211_TXCTL_FIRST_FRAGMENT (1<<8) /* this is a first fragment of
267 * the frame */
Ivo van Doornd5d08de2007-07-27 15:43:23 +0200268#define IEEE80211_TXCTL_LONG_RETRY_LIMIT (1<<10) /* this frame should be send
269 * using the through
270 * set_retry_limit configured
271 * long retry value */
Jiri Bencf0706e82007-05-05 11:45:53 -0700272 u32 flags; /* tx control flags defined
273 * above */
Johannes Berg6a7664d2007-09-14 11:10:25 -0400274 u8 key_idx; /* keyidx from hw->set_key(), undefined if
275 * IEEE80211_TXCTL_DO_NOT_ENCRYPT is set */
Ivo van Doornd5d08de2007-07-27 15:43:23 +0200276 u8 retry_limit; /* 1 = only first attempt, 2 = one retry, ..
277 * This could be used when set_retry_limit
278 * is not implemented by the driver */
Jiri Bencf0706e82007-05-05 11:45:53 -0700279 u8 power_level; /* per-packet transmit power level, in dBm */
280 u8 antenna_sel_tx; /* 0 = default/diversity, 1 = Ant0, 2 = Ant1 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700281 u8 icv_len; /* length of the ICV/MIC field in octets */
282 u8 iv_len; /* length of the IV field in octets */
Jiri Bencf0706e82007-05-05 11:45:53 -0700283 u8 queue; /* hardware queue to use for this frame;
284 * 0 = highest, hw->queues-1 = lowest */
Jiri Bencf0706e82007-05-05 11:45:53 -0700285 struct ieee80211_rate *rate; /* internal 80211.o rate */
286 struct ieee80211_rate *rts_rate; /* internal 80211.o rate
287 * for RTS/CTS */
288 int alt_retry_rate; /* retry rate for the last retries, given as the
289 * hw specific value for the rate (from
290 * struct ieee80211_rate). To be used to limit
291 * packet dropping when probing higher rates, if hw
292 * supports multiple retry rates. -1 = not used */
293 int type; /* internal */
294 int ifindex; /* internal */
295};
296
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400297
298/**
299 * enum mac80211_rx_flags - receive flags
300 *
301 * These flags are used with the @flag member of &struct ieee80211_rx_status.
302 * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame.
303 * Use together with %RX_FLAG_MMIC_STRIPPED.
304 * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware.
305 * @RX_FLAG_RADIOTAP: This frame starts with a radiotap header.
306 * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame,
307 * verification has been done by the hardware.
308 * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame.
309 * If this flag is set, the stack cannot do any replay detection
310 * hence the driver or hardware will have to do that.
Johannes Berg72abd812007-09-17 01:29:22 -0400311 * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on
312 * the frame.
313 * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on
314 * the frame.
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400315 */
316enum mac80211_rx_flags {
317 RX_FLAG_MMIC_ERROR = 1<<0,
318 RX_FLAG_DECRYPTED = 1<<1,
319 RX_FLAG_RADIOTAP = 1<<2,
320 RX_FLAG_MMIC_STRIPPED = 1<<3,
321 RX_FLAG_IV_STRIPPED = 1<<4,
Johannes Berg72abd812007-09-17 01:29:22 -0400322 RX_FLAG_FAILED_FCS_CRC = 1<<5,
323 RX_FLAG_FAILED_PLCP_CRC = 1<<6,
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400324};
325
326/**
327 * struct ieee80211_rx_status - receive status
328 *
329 * The low-level driver should provide this information (the subset
330 * supported by hardware) to the 802.11 code with each received
331 * frame.
332 * @mactime: MAC timestamp as defined by 802.11
333 * @freq: frequency the radio was tuned to when receiving this frame, in MHz
334 * @channel: channel the radio was tuned to
335 * @phymode: active PHY mode
336 * @ssi: signal strength when receiving this frame
337 * @signal: used as 'qual' in statistics reporting
338 * @noise: PHY noise when receiving this frame
339 * @antenna: antenna used
340 * @rate: data rate
341 * @flag: %RX_FLAG_*
342 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700343struct ieee80211_rx_status {
344 u64 mactime;
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400345 int freq;
Jiri Bencf0706e82007-05-05 11:45:53 -0700346 int channel;
Johannes Berg6b301cd2007-09-18 17:29:20 -0400347 enum ieee80211_phymode phymode;
Jiri Bencf0706e82007-05-05 11:45:53 -0700348 int ssi;
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400349 int signal;
Jiri Bencf0706e82007-05-05 11:45:53 -0700350 int noise;
351 int antenna;
352 int rate;
Jiri Bencf0706e82007-05-05 11:45:53 -0700353 int flag;
354};
355
Johannes Berg6b301cd2007-09-18 17:29:20 -0400356/**
357 * enum ieee80211_tx_status_flags - transmit status flags
358 *
359 * Status flags to indicate various transmit conditions.
360 *
361 * @IEEE80211_TX_STATUS_TX_FILTERED: The frame was not transmitted
362 * because the destination STA was in powersave mode.
363 *
364 * @IEEE80211_TX_STATUS_ACK: Frame was acknowledged
365 */
366enum ieee80211_tx_status_flags {
367 IEEE80211_TX_STATUS_TX_FILTERED = 1<<0,
368 IEEE80211_TX_STATUS_ACK = 1<<1,
369};
370
371/**
372 * struct ieee80211_tx_status - transmit status
373 *
374 * As much information as possible should be provided for each transmitted
375 * frame with ieee80211_tx_status().
376 *
377 * @control: a copy of the &struct ieee80211_tx_control passed to the driver
378 * in the tx() callback.
379 *
380 * @flags: transmit status flags, defined above
381 *
382 * @ack_signal: signal strength of the ACK frame
383 *
384 * @excessive_retries: set to 1 if the frame was retried many times
385 * but not acknowledged
386 *
387 * @retry_count: number of retries
388 *
389 * @queue_length: ?? REMOVE
390 * @queue_number: ?? REMOVE
391 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700392struct ieee80211_tx_status {
Jiri Bencf0706e82007-05-05 11:45:53 -0700393 struct ieee80211_tx_control control;
Johannes Berg6b301cd2007-09-18 17:29:20 -0400394 u8 flags;
395 bool excessive_retries;
396 u8 retry_count;
397 int ack_signal;
398 int queue_length;
Jiri Bencf0706e82007-05-05 11:45:53 -0700399 int queue_number;
400};
401
Johannes Berg6b301cd2007-09-18 17:29:20 -0400402/**
403 * enum ieee80211_conf_flags - configuration flags
404 *
405 * Flags to define PHY configuration options
406 *
407 * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time
408 * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported)
409 *
410 */
411enum ieee80211_conf_flags {
412 IEEE80211_CONF_SHORT_SLOT_TIME = 1<<0,
413 IEEE80211_CONF_RADIOTAP = 1<<1,
414};
Jiri Bencf0706e82007-05-05 11:45:53 -0700415
416/**
417 * struct ieee80211_conf - configuration of the device
418 *
419 * This struct indicates how the driver shall configure the hardware.
420 *
421 * @radio_enabled: when zero, driver is required to switch off the radio.
Johannes Berg6b301cd2007-09-18 17:29:20 -0400422 * TODO make a flag
423 * @channel: IEEE 802.11 channel number
424 * @freq: frequency in MHz
425 * @channel_val: hardware specific channel value for the channel
426 * @phymode: PHY mode to activate (REMOVE)
427 * @chan: channel to switch to, pointer to the channel information
428 * @mode: pointer to mode definition
429 * @regulatory_domain: ??
430 * @beacon_int: beacon interval (TODO make interface config)
431 * @flags: configuration flags defined above
432 * @power_level: transmit power limit for current regulatory domain in dBm
433 * @antenna_max: maximum antenna gain
434 * @antenna_sel_tx: transmit antenna selection, 0: default/diversity,
435 * 1/2: antenna 0/1
436 * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx
Jiri Bencf0706e82007-05-05 11:45:53 -0700437 */
438struct ieee80211_conf {
439 int channel; /* IEEE 802.11 channel number */
440 int freq; /* MHz */
441 int channel_val; /* hw specific value for the channel */
442
Johannes Berg6b301cd2007-09-18 17:29:20 -0400443 enum ieee80211_phymode phymode;
Jiri Bencf0706e82007-05-05 11:45:53 -0700444 struct ieee80211_channel *chan;
445 struct ieee80211_hw_mode *mode;
446 unsigned int regulatory_domain;
447 int radio_enabled;
448
449 int beacon_int;
Johannes Berg6b301cd2007-09-18 17:29:20 -0400450 u32 flags;
451 u8 power_level;
452 u8 antenna_max;
Jiri Bencf0706e82007-05-05 11:45:53 -0700453 u8 antenna_sel_tx;
454 u8 antenna_sel_rx;
Jiri Bencf0706e82007-05-05 11:45:53 -0700455};
456
457/**
458 * enum ieee80211_if_types - types of 802.11 network interfaces
459 *
Johannes Berga2897552007-09-28 14:01:25 +0200460 * @IEEE80211_IF_TYPE_INVALID: invalid interface type, not used
461 * by mac80211 itself
Jiri Bencf0706e82007-05-05 11:45:53 -0700462 * @IEEE80211_IF_TYPE_AP: interface in AP mode.
463 * @IEEE80211_IF_TYPE_MGMT: special interface for communication with hostap
464 * daemon. Drivers should never see this type.
465 * @IEEE80211_IF_TYPE_STA: interface in STA (client) mode.
466 * @IEEE80211_IF_TYPE_IBSS: interface in IBSS (ad-hoc) mode.
467 * @IEEE80211_IF_TYPE_MNTR: interface in monitor (rfmon) mode.
468 * @IEEE80211_IF_TYPE_WDS: interface in WDS mode.
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400469 * @IEEE80211_IF_TYPE_VLAN: VLAN interface bound to an AP, drivers
470 * will never see this type.
Jiri Bencf0706e82007-05-05 11:45:53 -0700471 */
472enum ieee80211_if_types {
Johannes Berga2897552007-09-28 14:01:25 +0200473 IEEE80211_IF_TYPE_INVALID,
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400474 IEEE80211_IF_TYPE_AP,
Johannes Berg0ec3ca42007-09-17 01:29:24 -0400475 IEEE80211_IF_TYPE_STA,
476 IEEE80211_IF_TYPE_IBSS,
477 IEEE80211_IF_TYPE_MNTR,
478 IEEE80211_IF_TYPE_WDS,
479 IEEE80211_IF_TYPE_VLAN,
Jiri Bencf0706e82007-05-05 11:45:53 -0700480};
481
482/**
483 * struct ieee80211_if_init_conf - initial configuration of an interface
484 *
485 * @if_id: internal interface ID. This number has no particular meaning to
486 * drivers and the only allowed usage is to pass it to
487 * ieee80211_beacon_get() and ieee80211_get_buffered_bc() functions.
488 * This field is not valid for monitor interfaces
489 * (interfaces of %IEEE80211_IF_TYPE_MNTR type).
490 * @type: one of &enum ieee80211_if_types constants. Determines the type of
491 * added/removed interface.
492 * @mac_addr: pointer to MAC address of the interface. This pointer is valid
493 * until the interface is removed (i.e. it cannot be used after
494 * remove_interface() callback was called for this interface).
495 *
496 * This structure is used in add_interface() and remove_interface()
497 * callbacks of &struct ieee80211_hw.
Johannes Berg4480f15c2007-07-10 19:32:10 +0200498 *
499 * When you allow multiple interfaces to be added to your PHY, take care
500 * that the hardware can actually handle multiple MAC addresses. However,
501 * also take care that when there's no interface left with mac_addr != %NULL
502 * you remove the MAC address from the device to avoid acknowledging packets
503 * in pure monitor mode.
Jiri Bencf0706e82007-05-05 11:45:53 -0700504 */
505struct ieee80211_if_init_conf {
506 int if_id;
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400507 enum ieee80211_if_types type;
Jiri Bencf0706e82007-05-05 11:45:53 -0700508 void *mac_addr;
509};
510
511/**
512 * struct ieee80211_if_conf - configuration of an interface
513 *
514 * @type: type of the interface. This is always the same as was specified in
515 * &struct ieee80211_if_init_conf. The type of an interface never changes
516 * during the life of the interface; this field is present only for
517 * convenience.
518 * @bssid: BSSID of the network we are associated to/creating.
519 * @ssid: used (together with @ssid_len) by drivers for hardware that
520 * generate beacons independently. The pointer is valid only during the
521 * config_interface() call, so copy the value somewhere if you need
522 * it.
523 * @ssid_len: length of the @ssid field.
Jiri Bencf0706e82007-05-05 11:45:53 -0700524 * @beacon: beacon template. Valid only if @host_gen_beacon_template in
525 * &struct ieee80211_hw is set. The driver is responsible of freeing
526 * the sk_buff.
527 * @beacon_control: tx_control for the beacon template, this field is only
528 * valid when the @beacon field was set.
529 *
530 * This structure is passed to the config_interface() callback of
531 * &struct ieee80211_hw.
532 */
533struct ieee80211_if_conf {
534 int type;
535 u8 *bssid;
536 u8 *ssid;
537 size_t ssid_len;
Jiri Bencf0706e82007-05-05 11:45:53 -0700538 struct sk_buff *beacon;
539 struct ieee80211_tx_control *beacon_control;
540};
541
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400542/**
543 * enum ieee80211_key_alg - key algorithm
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400544 * @ALG_WEP: WEP40 or WEP104
545 * @ALG_TKIP: TKIP
546 * @ALG_CCMP: CCMP (AES)
547 */
Johannes Bergea49c352007-09-18 17:29:21 -0400548enum ieee80211_key_alg {
Johannes Berg8f20fc22007-08-28 17:01:54 -0400549 ALG_WEP,
550 ALG_TKIP,
551 ALG_CCMP,
Johannes Bergea49c352007-09-18 17:29:21 -0400552};
Jiri Bencf0706e82007-05-05 11:45:53 -0700553
Johannes Berg11a843b2007-08-28 17:01:55 -0400554
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400555/**
556 * enum ieee80211_key_flags - key flags
557 *
558 * These flags are used for communication about keys between the driver
559 * and mac80211, with the @flags parameter of &struct ieee80211_key_conf.
560 *
561 * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates
562 * that the STA this key will be used with could be using QoS.
563 * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the
564 * driver to indicate that it requires IV generation for this
565 * particular key.
566 * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by
567 * the driver for a TKIP key if it requires Michael MIC
568 * generation in software.
569 */
570enum ieee80211_key_flags {
571 IEEE80211_KEY_FLAG_WMM_STA = 1<<0,
572 IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1,
573 IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2,
574};
575
576/**
577 * struct ieee80211_key_conf - key information
578 *
579 * This key information is given by mac80211 to the driver by
580 * the set_key() callback in &struct ieee80211_ops.
581 *
582 * @hw_key_idx: To be set by the driver, this is the key index the driver
583 * wants to be given when a frame is transmitted and needs to be
Johannes Berg6a7664d2007-09-14 11:10:25 -0400584 * encrypted in hardware.
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400585 * @alg: The key algorithm.
586 * @flags: key flags, see &enum ieee80211_key_flags.
587 * @keyidx: the key index (0-3)
588 * @keylen: key material length
589 * @key: key material
590 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700591struct ieee80211_key_conf {
Johannes Bergea49c352007-09-18 17:29:21 -0400592 enum ieee80211_key_alg alg;
Johannes Berg6a7664d2007-09-14 11:10:25 -0400593 u8 hw_key_idx;
Johannes Berg11a843b2007-08-28 17:01:55 -0400594 u8 flags;
Johannes Berg11a843b2007-08-28 17:01:55 -0400595 s8 keyidx;
Johannes Berg11a843b2007-08-28 17:01:55 -0400596 u8 keylen;
Jiri Bencf0706e82007-05-05 11:45:53 -0700597 u8 key[0];
598};
599
600#define IEEE80211_SEQ_COUNTER_RX 0
601#define IEEE80211_SEQ_COUNTER_TX 1
602
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400603/**
604 * enum set_key_cmd - key command
605 *
606 * Used with the set_key() callback in &struct ieee80211_ops, this
607 * indicates whether a key is being removed or added.
608 *
609 * @SET_KEY: a key is set
610 * @DISABLE_KEY: a key must be disabled
611 */
Johannes Bergea49c352007-09-18 17:29:21 -0400612enum set_key_cmd {
Johannes Berg11a843b2007-08-28 17:01:55 -0400613 SET_KEY, DISABLE_KEY,
Johannes Bergea49c352007-09-18 17:29:21 -0400614};
Jiri Bencf0706e82007-05-05 11:45:53 -0700615
Tomas Winkler478f8d22007-09-30 13:52:37 +0200616/**
617 * enum sta_notify_cmd - sta notify command
618 *
619 * Used with the sta_notify() callback in &struct ieee80211_ops, this
620 * indicates addition and removal of a station to station table
621 *
622 * @STA_NOTIFY_ADD: a station was added to the station table
623 * @STA_NOTIFY_REMOVE: a station being removed from the station table
624 */
625enum sta_notify_cmd {
626 STA_NOTIFY_ADD, STA_NOTIFY_REMOVE
627};
Johannes Berg1bc08262007-09-18 17:29:15 -0400628
629/**
630 * enum ieee80211_hw_flags - hardware flags
631 *
632 * These flags are used to indicate hardware capabilities to
633 * the stack. Generally, flags here should have their meaning
634 * done in a way that the simplest hardware doesn't need setting
635 * any particular flags. There are some exceptions to this rule,
636 * however, so you are advised to review these flags carefully.
637 *
638 * @IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE:
639 * The device only needs to be supplied with a beacon template.
640 * If you need the host to generate each beacon then don't use
641 * this flag and call ieee80211_beacon_get() when you need the
642 * next beacon frame. Note that if you set this flag, you must
643 * implement the set_tim() callback for powersave mode to work
644 * properly.
645 * This flag is only relevant for access-point mode.
646 *
647 * @IEEE80211_HW_RX_INCLUDES_FCS:
648 * Indicates that received frames passed to the stack include
649 * the FCS at the end.
650 *
651 * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING:
652 * Some wireless LAN chipsets buffer broadcast/multicast frames
653 * for power saving stations in the hardware/firmware and others
654 * rely on the host system for such buffering. This option is used
655 * to configure the IEEE 802.11 upper layer to buffer broadcast and
656 * multicast frames when there are power saving stations so that
657 * the driver can fetch them with ieee80211_get_buffered_bc(). Note
658 * that not setting this flag works properly only when the
659 * %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is also not set because
660 * otherwise the stack will not know when the DTIM beacon was sent.
661 *
662 * @IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED:
663 * Channels are already configured to the default regulatory domain
664 * specified in the device's EEPROM
665 */
666enum ieee80211_hw_flags {
667 IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE = 1<<0,
668 IEEE80211_HW_RX_INCLUDES_FCS = 1<<1,
669 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2,
670 IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED = 1<<3,
671};
672
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400673/**
674 * struct ieee80211_hw - hardware information and state
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400675 *
676 * This structure contains the configuration and hardware
677 * information for an 802.11 PHY.
678 *
679 * @wiphy: This points to the &struct wiphy allocated for this
680 * 802.11 PHY. You must fill in the @perm_addr and @dev
681 * members of this structure using SET_IEEE80211_DEV()
682 * and SET_IEEE80211_PERM_ADDR().
683 *
684 * @conf: &struct ieee80211_conf, device configuration, don't use.
685 *
686 * @workqueue: single threaded workqueue available for driver use,
687 * allocated by mac80211 on registration and flushed on
688 * unregistration.
689 *
690 * @priv: pointer to private area that was allocated for driver use
691 * along with this structure.
692 *
693 * @flags: hardware flags, see &enum ieee80211_hw_flags.
694 *
695 * @extra_tx_headroom: headroom to reserve in each transmit skb
696 * for use by the driver (e.g. for transmit headers.)
697 *
698 * @channel_change_time: time (in microseconds) it takes to change channels.
699 *
700 * @max_rssi: Maximum value for ssi in RX information, use
701 * negative numbers for dBm and 0 to indicate no support.
702 *
703 * @max_signal: like @max_rssi, but for the signal value.
704 *
705 * @max_noise: like @max_rssi, but for the noise value.
706 *
707 * @queues: number of available hardware transmit queues for
708 * data packets. WMM/QoS requires at least four.
Johannes Berg7ac1bd62007-09-14 11:10:25 -0400709 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700710struct ieee80211_hw {
Jiri Bencf0706e82007-05-05 11:45:53 -0700711 struct ieee80211_conf conf;
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400712 struct wiphy *wiphy;
Jiri Bencf0706e82007-05-05 11:45:53 -0700713 struct workqueue_struct *workqueue;
Jiri Bencf0706e82007-05-05 11:45:53 -0700714 void *priv;
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400715 u32 flags;
Jiri Bencf0706e82007-05-05 11:45:53 -0700716 unsigned int extra_tx_headroom;
Jiri Bencf0706e82007-05-05 11:45:53 -0700717 int channel_change_time;
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400718 u8 queues;
Jiri Bencf0706e82007-05-05 11:45:53 -0700719 s8 max_rssi;
720 s8 max_signal;
721 s8 max_noise;
Jiri Bencf0706e82007-05-05 11:45:53 -0700722};
723
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400724/**
725 * SET_IEEE80211_DEV - set device for 802.11 hardware
726 *
727 * @hw: the &struct ieee80211_hw to set the device for
728 * @dev: the &struct device of this 802.11 device
729 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700730static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev)
731{
732 set_wiphy_dev(hw->wiphy, dev);
733}
734
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400735/**
736 * SET_IEEE80211_PERM_ADDR - set the permanenet MAC address for 802.11 hardware
737 *
738 * @hw: the &struct ieee80211_hw to set the MAC address for
739 * @addr: the address to set
740 */
Jiri Bencf0706e82007-05-05 11:45:53 -0700741static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr)
742{
743 memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN);
744}
745
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400746/**
747 * DOC: Hardware crypto acceleration
Johannes Berg4150c572007-09-17 01:29:23 -0400748 *
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400749 * mac80211 is capable of taking advantage of many hardware
750 * acceleration designs for encryption and decryption operations.
751 *
752 * The set_key() callback in the &struct ieee80211_ops for a given
753 * device is called to enable hardware acceleration of encryption and
754 * decryption. The callback takes an @address parameter that will be
755 * the broadcast address for default keys, the other station's hardware
756 * address for individual keys or the zero address for keys that will
757 * be used only for transmission.
758 * Multiple transmission keys with the same key index may be used when
759 * VLANs are configured for an access point.
760 *
761 * The @local_address parameter will always be set to our own address,
762 * this is only relevant if you support multiple local addresses.
763 *
764 * When transmitting, the TX control data will use the @hw_key_idx
765 * selected by the driver by modifying the &struct ieee80211_key_conf
766 * pointed to by the @key parameter to the set_key() function.
767 *
768 * The set_key() call for the %SET_KEY command should return 0 if
769 * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be
770 * added; if you return 0 then hw_key_idx must be assigned to the
771 * hardware key index, you are free to use the full u8 range.
772 *
773 * When the cmd is %DISABLE_KEY then it must succeed.
774 *
775 * Note that it is permissible to not decrypt a frame even if a key
776 * for it has been uploaded to hardware, the stack will not make any
777 * decision based on whether a key has been uploaded or not but rather
778 * based on the receive flags.
779 *
780 * The &struct ieee80211_key_conf structure pointed to by the @key
781 * parameter is guaranteed to be valid until another call to set_key()
782 * removes it, but it can only be used as a cookie to differentiate
783 * keys.
Johannes Berg4150c572007-09-17 01:29:23 -0400784 */
Johannes Berg4150c572007-09-17 01:29:23 -0400785
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400786/**
787 * DOC: Frame filtering
788 *
789 * mac80211 requires to see many management frames for proper
790 * operation, and users may want to see many more frames when
791 * in monitor mode. However, for best CPU usage and power consumption,
792 * having as few frames as possible percolate through the stack is
793 * desirable. Hence, the hardware should filter as much as possible.
794 *
795 * To achieve this, mac80211 uses filter flags (see below) to tell
796 * the driver's configure_filter() function which frames should be
797 * passed to mac80211 and which should be filtered out.
798 *
799 * The configure_filter() callback is invoked with the parameters
800 * @mc_count and @mc_list for the combined multicast address list
801 * of all virtual interfaces, @changed_flags telling which flags
802 * were changed and @total_flags with the new flag states.
803 *
804 * If your device has no multicast address filters your driver will
805 * need to check both the %FIF_ALLMULTI flag and the @mc_count
806 * parameter to see whether multicast frames should be accepted
807 * or dropped.
808 *
809 * All unsupported flags in @total_flags must be cleared, i.e. you
810 * should clear all bits except those you honoured.
811 */
812
813/**
814 * enum ieee80211_filter_flags - hardware filter flags
815 *
816 * These flags determine what the filter in hardware should be
817 * programmed to let through and what should not be passed to the
818 * stack. It is always safe to pass more frames than requested,
819 * but this has negative impact on power consumption.
820 *
821 * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS,
822 * think of the BSS as your network segment and then this corresponds
823 * to the regular ethernet device promiscuous mode.
824 *
825 * @FIF_ALLMULTI: pass all multicast frames, this is used if requested
826 * by the user or if the hardware is not capable of filtering by
827 * multicast address.
828 *
829 * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the
830 * %RX_FLAG_FAILED_FCS_CRC for them)
831 *
832 * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set
833 * the %RX_FLAG_FAILED_PLCP_CRC for them
834 *
835 * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate
836 * to the hardware that it should not filter beacons or probe responses
837 * by BSSID. Filtering them can greatly reduce the amount of processing
838 * mac80211 needs to do and the amount of CPU wakeups, so you should
839 * honour this flag if possible.
840 *
841 * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then
842 * only those addressed to this station
843 *
844 * @FIF_OTHER_BSS: pass frames destined to other BSSes
845 */
846enum ieee80211_filter_flags {
847 FIF_PROMISC_IN_BSS = 1<<0,
848 FIF_ALLMULTI = 1<<1,
849 FIF_FCSFAIL = 1<<2,
850 FIF_PLCPFAIL = 1<<3,
851 FIF_BCN_PRBRESP_PROMISC = 1<<4,
852 FIF_CONTROL = 1<<5,
853 FIF_OTHER_BSS = 1<<6,
854};
855
856/**
857 * enum ieee80211_erp_change_flags - erp change flags
858 *
859 * These flags are used with the erp_ie_changed() callback in
860 * &struct ieee80211_ops to indicate which parameter(s) changed.
861 * @IEEE80211_ERP_CHANGE_PROTECTION: protection changed
862 * @IEEE80211_ERP_CHANGE_PREAMBLE: barker preamble mode changed
863 */
864enum ieee80211_erp_change_flags {
865 IEEE80211_ERP_CHANGE_PROTECTION = 1<<0,
866 IEEE80211_ERP_CHANGE_PREAMBLE = 1<<1,
867};
868
869
870/**
871 * struct ieee80211_ops - callbacks from mac80211 to the driver
872 *
873 * This structure contains various callbacks that the driver may
874 * handle or, in some cases, must handle, for example to configure
875 * the hardware to a new channel or to transmit a frame.
876 *
877 * @tx: Handler that 802.11 module calls for each transmitted frame.
878 * skb contains the buffer starting from the IEEE 802.11 header.
879 * The low-level driver should send the frame out based on
880 * configuration in the TX control data. Must be implemented and
881 * atomic.
882 *
883 * @start: Called before the first netdevice attached to the hardware
884 * is enabled. This should turn on the hardware and must turn on
885 * frame reception (for possibly enabled monitor interfaces.)
886 * Returns negative error codes, these may be seen in userspace,
887 * or zero.
888 * When the device is started it should not have a MAC address
889 * to avoid acknowledging frames before a non-monitor device
890 * is added.
891 * Must be implemented.
892 *
893 * @stop: Called after last netdevice attached to the hardware
894 * is disabled. This should turn off the hardware (at least
895 * it must turn off frame reception.)
896 * May be called right after add_interface if that rejects
897 * an interface.
898 * Must be implemented.
899 *
900 * @add_interface: Called when a netdevice attached to the hardware is
901 * enabled. Because it is not called for monitor mode devices, @open
902 * and @stop must be implemented.
903 * The driver should perform any initialization it needs before
904 * the device can be enabled. The initial configuration for the
905 * interface is given in the conf parameter.
906 * The callback may refuse to add an interface by returning a
907 * negative error code (which will be seen in userspace.)
908 * Must be implemented.
909 *
910 * @remove_interface: Notifies a driver that an interface is going down.
911 * The @stop callback is called after this if it is the last interface
912 * and no monitor interfaces are present.
913 * When all interfaces are removed, the MAC address in the hardware
914 * must be cleared so the device no longer acknowledges packets,
915 * the mac_addr member of the conf structure is, however, set to the
916 * MAC address of the device going away.
917 * Hence, this callback must be implemented.
918 *
919 * @config: Handler for configuration requests. IEEE 802.11 code calls this
920 * function to change hardware configuration, e.g., channel.
921 *
922 * @config_interface: Handler for configuration requests related to interfaces
923 * (e.g. BSSID changes.)
924 *
925 * @configure_filter: Configure the device's RX filter.
926 * See the section "Frame filtering" for more information.
927 * This callback must be implemented and atomic.
928 *
929 * @set_tim: Set TIM bit. If the hardware/firmware takes care of beacon
930 * generation (that is, %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is set)
931 * mac80211 calls this function when a TIM bit must be set or cleared
932 * for a given AID. Must be atomic.
933 *
934 * @set_key: See the section "Hardware crypto acceleration"
935 * This callback can sleep, and is only called between add_interface
936 * and remove_interface calls, i.e. while the interface with the
937 * given local_address is enabled.
938 *
939 * @set_ieee8021x: Enable/disable IEEE 802.1X. This item requests wlan card
940 * to pass unencrypted EAPOL-Key frames even when encryption is
941 * configured. If the wlan card does not require such a configuration,
942 * this function pointer can be set to NULL.
943 *
944 * @set_port_auth: Set port authorization state (IEEE 802.1X PAE) to be
945 * authorized (@authorized=1) or unauthorized (=0). This function can be
946 * used if the wlan hardware or low-level driver implements PAE.
947 * mac80211 will filter frames based on authorization state in any case,
948 * so this function pointer can be NULL if low-level driver does not
949 * require event notification about port state changes.
950 *
951 * @hw_scan: Ask the hardware to service the scan request, no need to start
952 * the scan state machine in stack.
953 *
954 * @get_stats: return low-level statistics
955 *
956 * @set_privacy_invoked: For devices that generate their own beacons and probe
957 * response or association responses this updates the state of privacy_invoked
958 * returns 0 for success or an error number.
959 *
960 * @get_sequence_counter: For devices that have internal sequence counters this
961 * callback allows mac80211 to access the current value of a counter.
962 * This callback seems not well-defined, tell us if you need it.
963 *
964 * @set_rts_threshold: Configuration of RTS threshold (if device needs it)
965 *
966 * @set_frag_threshold: Configuration of fragmentation threshold. Assign this if
967 * the device does fragmentation by itself; if this method is assigned then
968 * the stack will not do fragmentation.
969 *
970 * @set_retry_limit: Configuration of retry limits (if device needs it)
971 *
Tomas Winkler478f8d22007-09-30 13:52:37 +0200972 * @sta_notify: Notifies low level driver about addition or removal
973 * of assocaited station or AP.
Johannes Berg75a5f0c2007-09-18 17:29:20 -0400974 *
975 * @erp_ie_changed: Handle ERP IE change notifications. Must be atomic.
976 *
977 * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
978 * bursting) for a hardware TX queue. The @queue parameter uses the
979 * %IEEE80211_TX_QUEUE_* constants. Must be atomic.
980 *
981 * @get_tx_stats: Get statistics of the current TX queue status. This is used
982 * to get number of currently queued packets (queue length), maximum queue
983 * size (limit), and total number of packets sent using each TX queue
984 * (count). This information is used for WMM to find out which TX
985 * queues have room for more packets and by hostapd to provide
986 * statistics about the current queueing state to external programs.
987 *
988 * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently,
989 * this is only used for IBSS mode debugging and, as such, is not a
990 * required function. Must be atomic.
991 *
992 * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize
993 * with other STAs in the IBSS. This is only used in IBSS mode. This
994 * function is optional if the firmware/hardware takes full care of
995 * TSF synchronization.
996 *
997 * @beacon_update: Setup beacon data for IBSS beacons. Unlike access point,
998 * IBSS uses a fixed beacon frame which is configured using this
Michael Buesch5ecc2a52007-10-02 12:17:56 +0200999 * function.
1000 * If the driver returns success (0) from this callback, it owns
1001 * the skb. That means the driver is responsible to kfree_skb() it.
1002 * The control structure is not dynamically allocated. That means the
1003 * driver does not own the pointer and if it needs it somewhere
1004 * outside of the context of this function, it must copy it
1005 * somewhere else.
1006 * This handler is required only for IBSS mode.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001007 *
1008 * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us.
1009 * This is needed only for IBSS mode and the result of this function is
1010 * used to determine whether to reply to Probe Requests.
1011 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001012struct ieee80211_ops {
Jiri Bencf0706e82007-05-05 11:45:53 -07001013 int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb,
1014 struct ieee80211_tx_control *control);
Johannes Berg4150c572007-09-17 01:29:23 -04001015 int (*start)(struct ieee80211_hw *hw);
Johannes Berg4150c572007-09-17 01:29:23 -04001016 void (*stop)(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001017 int (*add_interface)(struct ieee80211_hw *hw,
1018 struct ieee80211_if_init_conf *conf);
Jiri Bencf0706e82007-05-05 11:45:53 -07001019 void (*remove_interface)(struct ieee80211_hw *hw,
1020 struct ieee80211_if_init_conf *conf);
Jiri Bencf0706e82007-05-05 11:45:53 -07001021 int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
Jiri Bencf0706e82007-05-05 11:45:53 -07001022 int (*config_interface)(struct ieee80211_hw *hw,
1023 int if_id, struct ieee80211_if_conf *conf);
Johannes Berg4150c572007-09-17 01:29:23 -04001024 void (*configure_filter)(struct ieee80211_hw *hw,
1025 unsigned int changed_flags,
1026 unsigned int *total_flags,
1027 int mc_count, struct dev_addr_list *mc_list);
Jiri Bencf0706e82007-05-05 11:45:53 -07001028 int (*set_tim)(struct ieee80211_hw *hw, int aid, int set);
Johannes Bergea49c352007-09-18 17:29:21 -04001029 int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd,
Johannes Berg11a843b2007-08-28 17:01:55 -04001030 const u8 *local_address, const u8 *address,
1031 struct ieee80211_key_conf *key);
Jiri Bencf0706e82007-05-05 11:45:53 -07001032 int (*set_ieee8021x)(struct ieee80211_hw *hw, int use_ieee8021x);
Jiri Bencf0706e82007-05-05 11:45:53 -07001033 int (*set_port_auth)(struct ieee80211_hw *hw, u8 *addr,
1034 int authorized);
Jiri Bencf0706e82007-05-05 11:45:53 -07001035 int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len);
Jiri Bencf0706e82007-05-05 11:45:53 -07001036 int (*get_stats)(struct ieee80211_hw *hw,
1037 struct ieee80211_low_level_stats *stats);
Jiri Bencf0706e82007-05-05 11:45:53 -07001038 int (*set_privacy_invoked)(struct ieee80211_hw *hw,
1039 int privacy_invoked);
Jiri Bencf0706e82007-05-05 11:45:53 -07001040 int (*get_sequence_counter)(struct ieee80211_hw *hw,
1041 u8* addr, u8 keyidx, u8 txrx,
1042 u32* iv32, u16* iv16);
Jiri Bencf0706e82007-05-05 11:45:53 -07001043 int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value);
Jiri Bencf0706e82007-05-05 11:45:53 -07001044 int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value);
Jiri Bencf0706e82007-05-05 11:45:53 -07001045 int (*set_retry_limit)(struct ieee80211_hw *hw,
1046 u32 short_retry, u32 long_retr);
Tomas Winkler478f8d22007-09-30 13:52:37 +02001047 void (*sta_notify)(struct ieee80211_hw *hw, int if_id,
1048 enum sta_notify_cmd, const u8 *addr);
Daniel Draked9430a32007-07-27 15:43:24 +02001049 void (*erp_ie_changed)(struct ieee80211_hw *hw, u8 changes,
1050 int cts_protection, int preamble);
Jiri Bencf0706e82007-05-05 11:45:53 -07001051 int (*conf_tx)(struct ieee80211_hw *hw, int queue,
1052 const struct ieee80211_tx_queue_params *params);
Jiri Bencf0706e82007-05-05 11:45:53 -07001053 int (*get_tx_stats)(struct ieee80211_hw *hw,
1054 struct ieee80211_tx_queue_stats *stats);
Jiri Bencf0706e82007-05-05 11:45:53 -07001055 u64 (*get_tsf)(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001056 void (*reset_tsf)(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001057 int (*beacon_update)(struct ieee80211_hw *hw,
1058 struct sk_buff *skb,
1059 struct ieee80211_tx_control *control);
Jiri Bencf0706e82007-05-05 11:45:53 -07001060 int (*tx_last_beacon)(struct ieee80211_hw *hw);
1061};
1062
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001063/**
1064 * ieee80211_alloc_hw - Allocate a new hardware device
1065 *
1066 * This must be called once for each hardware device. The returned pointer
1067 * must be used to refer to this device when calling other functions.
1068 * mac80211 allocates a private data area for the driver pointed to by
1069 * @priv in &struct ieee80211_hw, the size of this area is given as
1070 * @priv_data_len.
1071 *
1072 * @priv_data_len: length of private data
1073 * @ops: callbacks for this device
Jiri Bencf0706e82007-05-05 11:45:53 -07001074 */
1075struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
1076 const struct ieee80211_ops *ops);
1077
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001078/**
1079 * ieee80211_register_hw - Register hardware device
1080 *
1081 * You must call this function before any other functions
1082 * except ieee80211_register_hwmode.
1083 *
1084 * @hw: the device to register as returned by ieee80211_alloc_hw()
1085 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001086int ieee80211_register_hw(struct ieee80211_hw *hw);
1087
Jiri Bencf0706e82007-05-05 11:45:53 -07001088#ifdef CONFIG_MAC80211_LEDS
1089extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw);
1090extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw);
Michael Buesch47f0c502007-09-27 15:10:44 +02001091extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw);
Jiri Bencf0706e82007-05-05 11:45:53 -07001092#endif
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001093/**
1094 * ieee80211_get_tx_led_name - get name of TX LED
1095 *
1096 * mac80211 creates a transmit LED trigger for each wireless hardware
1097 * that can be used to drive LEDs if your driver registers a LED device.
1098 * This function returns the name (or %NULL if not configured for LEDs)
1099 * of the trigger so you can automatically link the LED device.
1100 *
1101 * @hw: the hardware to get the LED trigger name for
1102 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001103static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw)
1104{
1105#ifdef CONFIG_MAC80211_LEDS
1106 return __ieee80211_get_tx_led_name(hw);
1107#else
1108 return NULL;
1109#endif
1110}
1111
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001112/**
1113 * ieee80211_get_rx_led_name - get name of RX LED
1114 *
1115 * mac80211 creates a receive LED trigger for each wireless hardware
1116 * that can be used to drive LEDs if your driver registers a LED device.
1117 * This function returns the name (or %NULL if not configured for LEDs)
1118 * of the trigger so you can automatically link the LED device.
1119 *
1120 * @hw: the hardware to get the LED trigger name for
1121 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001122static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw)
1123{
1124#ifdef CONFIG_MAC80211_LEDS
1125 return __ieee80211_get_rx_led_name(hw);
1126#else
1127 return NULL;
1128#endif
1129}
1130
Michael Buesch47f0c502007-09-27 15:10:44 +02001131static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw)
1132{
1133#ifdef CONFIG_MAC80211_LEDS
1134 return __ieee80211_get_assoc_led_name(hw);
1135#else
1136 return NULL;
1137#endif
1138}
1139
1140
Jiri Bencf0706e82007-05-05 11:45:53 -07001141/* Register a new hardware PHYMODE capability to the stack. */
1142int ieee80211_register_hwmode(struct ieee80211_hw *hw,
1143 struct ieee80211_hw_mode *mode);
1144
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001145/**
1146 * ieee80211_unregister_hw - Unregister a hardware device
1147 *
1148 * This function instructs mac80211 to free allocated resources
1149 * and unregister netdevices from the networking subsystem.
1150 *
1151 * @hw: the hardware to unregister
1152 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001153void ieee80211_unregister_hw(struct ieee80211_hw *hw);
1154
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001155/**
1156 * ieee80211_free_hw - free hardware descriptor
1157 *
1158 * This function frees everything that was allocated, including the
1159 * private data for the driver. You must call ieee80211_unregister_hw()
1160 * before calling this function
1161 *
1162 * @hw: the hardware to free
1163 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001164void ieee80211_free_hw(struct ieee80211_hw *hw);
1165
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001166/* trick to avoid symbol clashes with the ieee80211 subsystem */
Jiri Bencf0706e82007-05-05 11:45:53 -07001167void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
1168 struct ieee80211_rx_status *status);
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001169
1170/**
1171 * ieee80211_rx - receive frame
1172 *
1173 * Use this function to hand received frames to mac80211. The receive
1174 * buffer in @skb must start with an IEEE 802.11 header or a radiotap
1175 * header if %RX_FLAG_RADIOTAP is set in the @status flags.
1176 *
1177 * This function may not be called in IRQ context.
1178 *
1179 * @hw: the hardware this frame came in on
1180 * @skb: the buffer to receive, owned by mac80211 after this call
1181 * @status: status of this frame; the status pointer need not be valid
1182 * after this function returns
1183 */
1184static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
1185 struct ieee80211_rx_status *status)
1186{
1187 __ieee80211_rx(hw, skb, status);
1188}
1189
1190/**
1191 * ieee80211_rx_irqsafe - receive frame
1192 *
1193 * Like ieee80211_rx() but can be called in IRQ context
1194 * (internally defers to a workqueue.)
1195 *
1196 * @hw: the hardware this frame came in on
1197 * @skb: the buffer to receive, owned by mac80211 after this call
1198 * @status: status of this frame; the status pointer need not be valid
1199 * after this function returns and is not freed by mac80211,
1200 * it is recommended that it points to a stack area
1201 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001202void ieee80211_rx_irqsafe(struct ieee80211_hw *hw,
1203 struct sk_buff *skb,
1204 struct ieee80211_rx_status *status);
1205
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001206/**
1207 * ieee80211_tx_status - transmit status callback
1208 *
1209 * Call this function for all transmitted frames after they have been
1210 * transmitted. It is permissible to not call this function for
1211 * multicast frames but this can affect statistics.
1212 *
1213 * @hw: the hardware the frame was transmitted by
1214 * @skb: the frame that was transmitted, owned by mac80211 after this call
1215 * @status: status information for this frame; the status pointer need not
1216 * be valid after this function returns and is not freed by mac80211,
1217 * it is recommended that it points to a stack area
1218 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001219void ieee80211_tx_status(struct ieee80211_hw *hw,
1220 struct sk_buff *skb,
1221 struct ieee80211_tx_status *status);
1222void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
1223 struct sk_buff *skb,
1224 struct ieee80211_tx_status *status);
1225
1226/**
1227 * ieee80211_beacon_get - beacon generation function
1228 * @hw: pointer obtained from ieee80211_alloc_hw().
1229 * @if_id: interface ID from &struct ieee80211_if_init_conf.
1230 * @control: will be filled with information needed to send this beacon.
1231 *
1232 * If the beacon frames are generated by the host system (i.e., not in
1233 * hardware/firmware), the low-level driver uses this function to receive
1234 * the next beacon frame from the 802.11 code. The low-level is responsible
1235 * for calling this function before beacon data is needed (e.g., based on
1236 * hardware interrupt). Returned skb is used only once and low-level driver
1237 * is responsible of freeing it.
1238 */
1239struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
1240 int if_id,
1241 struct ieee80211_tx_control *control);
1242
1243/**
1244 * ieee80211_rts_get - RTS frame generation function
1245 * @hw: pointer obtained from ieee80211_alloc_hw().
Daniel Drake7e9ed182007-07-27 15:43:24 +02001246 * @if_id: interface ID from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001247 * @frame: pointer to the frame that is going to be protected by the RTS.
1248 * @frame_len: the frame length (in octets).
1249 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1250 * @rts: The buffer where to store the RTS frame.
1251 *
1252 * If the RTS frames are generated by the host system (i.e., not in
1253 * hardware/firmware), the low-level driver uses this function to receive
1254 * the next RTS frame from the 802.11 code. The low-level is responsible
1255 * for calling this function before and RTS frame is needed.
1256 */
Daniel Drake7e9ed182007-07-27 15:43:24 +02001257void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id,
Jiri Bencf0706e82007-05-05 11:45:53 -07001258 const void *frame, size_t frame_len,
1259 const struct ieee80211_tx_control *frame_txctl,
1260 struct ieee80211_rts *rts);
1261
1262/**
1263 * ieee80211_rts_duration - Get the duration field for an RTS frame
1264 * @hw: pointer obtained from ieee80211_alloc_hw().
Daniel Drake7e9ed182007-07-27 15:43:24 +02001265 * @if_id: interface ID from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001266 * @frame_len: the length of the frame that is going to be protected by the RTS.
1267 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1268 *
1269 * If the RTS is generated in firmware, but the host system must provide
1270 * the duration field, the low-level driver uses this function to receive
1271 * the duration field value in little-endian byteorder.
1272 */
Daniel Drake7e9ed182007-07-27 15:43:24 +02001273__le16 ieee80211_rts_duration(struct ieee80211_hw *hw, int if_id,
Jiri Bencf0706e82007-05-05 11:45:53 -07001274 size_t frame_len,
1275 const struct ieee80211_tx_control *frame_txctl);
1276
1277/**
1278 * ieee80211_ctstoself_get - CTS-to-self frame generation function
1279 * @hw: pointer obtained from ieee80211_alloc_hw().
Daniel Drake7e9ed182007-07-27 15:43:24 +02001280 * @if_id: interface ID from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001281 * @frame: pointer to the frame that is going to be protected by the CTS-to-self.
1282 * @frame_len: the frame length (in octets).
1283 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1284 * @cts: The buffer where to store the CTS-to-self frame.
1285 *
1286 * If the CTS-to-self frames are generated by the host system (i.e., not in
1287 * hardware/firmware), the low-level driver uses this function to receive
1288 * the next CTS-to-self frame from the 802.11 code. The low-level is responsible
1289 * for calling this function before and CTS-to-self frame is needed.
1290 */
Daniel Drake7e9ed182007-07-27 15:43:24 +02001291void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id,
Jiri Bencf0706e82007-05-05 11:45:53 -07001292 const void *frame, size_t frame_len,
1293 const struct ieee80211_tx_control *frame_txctl,
1294 struct ieee80211_cts *cts);
1295
1296/**
1297 * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame
1298 * @hw: pointer obtained from ieee80211_alloc_hw().
Daniel Drake7e9ed182007-07-27 15:43:24 +02001299 * @if_id: interface ID from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001300 * @frame_len: the length of the frame that is going to be protected by the CTS-to-self.
1301 * @frame_txctl: &struct ieee80211_tx_control of the frame.
1302 *
1303 * If the CTS-to-self is generated in firmware, but the host system must provide
1304 * the duration field, the low-level driver uses this function to receive
1305 * the duration field value in little-endian byteorder.
1306 */
Daniel Drake7e9ed182007-07-27 15:43:24 +02001307__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, int if_id,
Jiri Bencf0706e82007-05-05 11:45:53 -07001308 size_t frame_len,
1309 const struct ieee80211_tx_control *frame_txctl);
1310
1311/**
1312 * ieee80211_generic_frame_duration - Calculate the duration field for a frame
1313 * @hw: pointer obtained from ieee80211_alloc_hw().
Daniel Drake7e9ed182007-07-27 15:43:24 +02001314 * @if_id: interface ID from &struct ieee80211_if_init_conf.
Jiri Bencf0706e82007-05-05 11:45:53 -07001315 * @frame_len: the length of the frame.
1316 * @rate: the rate (in 100kbps) at which the frame is going to be transmitted.
1317 *
1318 * Calculate the duration field of some generic frame, given its
1319 * length and transmission rate (in 100kbps).
1320 */
Daniel Drake7e9ed182007-07-27 15:43:24 +02001321__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, int if_id,
Jiri Bencf0706e82007-05-05 11:45:53 -07001322 size_t frame_len,
1323 int rate);
1324
1325/**
1326 * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames
1327 * @hw: pointer as obtained from ieee80211_alloc_hw().
1328 * @if_id: interface ID from &struct ieee80211_if_init_conf.
1329 * @control: will be filled with information needed to send returned frame.
1330 *
1331 * Function for accessing buffered broadcast and multicast frames. If
1332 * hardware/firmware does not implement buffering of broadcast/multicast
1333 * frames when power saving is used, 802.11 code buffers them in the host
1334 * memory. The low-level driver uses this function to fetch next buffered
1335 * frame. In most cases, this is used when generating beacon frame. This
1336 * function returns a pointer to the next buffered skb or NULL if no more
1337 * buffered frames are available.
1338 *
1339 * Note: buffered frames are returned only after DTIM beacon frame was
1340 * generated with ieee80211_beacon_get() and the low-level driver must thus
1341 * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns
1342 * NULL if the previous generated beacon was not DTIM, so the low-level driver
1343 * does not need to check for DTIM beacons separately and should be able to
1344 * use common code for all beacons.
1345 */
1346struct sk_buff *
1347ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
1348 struct ieee80211_tx_control *control);
1349
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001350/**
1351 * ieee80211_get_hdrlen_from_skb - get header length from data
1352 *
1353 * Given an skb with a raw 802.11 header at the data pointer this function
Jiri Bencf0706e82007-05-05 11:45:53 -07001354 * returns the 802.11 header length in bytes (not including encryption
1355 * headers). If the data in the sk_buff is too short to contain a valid 802.11
1356 * header the function returns 0.
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001357 *
1358 * @skb: the frame
Jiri Bencf0706e82007-05-05 11:45:53 -07001359 */
1360int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb);
1361
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001362/**
1363 * ieee80211_get_hdrlen - get header length from frame control
1364 *
1365 * This function returns the 802.11 header length in bytes (not including
1366 * encryption headers.)
1367 *
1368 * @fc: the frame control field (in CPU endianness)
1369 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001370int ieee80211_get_hdrlen(u16 fc);
1371
1372/**
1373 * ieee80211_wake_queue - wake specific queue
1374 * @hw: pointer as obtained from ieee80211_alloc_hw().
1375 * @queue: queue number (counted from zero).
1376 *
1377 * Drivers should use this function instead of netif_wake_queue.
1378 */
1379void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue);
1380
1381/**
1382 * ieee80211_stop_queue - stop specific queue
1383 * @hw: pointer as obtained from ieee80211_alloc_hw().
1384 * @queue: queue number (counted from zero).
1385 *
1386 * Drivers should use this function instead of netif_stop_queue.
1387 */
1388void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue);
1389
1390/**
1391 * ieee80211_start_queues - start all queues
1392 * @hw: pointer to as obtained from ieee80211_alloc_hw().
1393 *
1394 * Drivers should use this function instead of netif_start_queue.
1395 */
1396void ieee80211_start_queues(struct ieee80211_hw *hw);
1397
1398/**
1399 * ieee80211_stop_queues - stop all queues
1400 * @hw: pointer as obtained from ieee80211_alloc_hw().
1401 *
1402 * Drivers should use this function instead of netif_stop_queue.
1403 */
1404void ieee80211_stop_queues(struct ieee80211_hw *hw);
1405
1406/**
1407 * ieee80211_wake_queues - wake all queues
1408 * @hw: pointer as obtained from ieee80211_alloc_hw().
1409 *
1410 * Drivers should use this function instead of netif_wake_queue.
1411 */
1412void ieee80211_wake_queues(struct ieee80211_hw *hw);
1413
Johannes Berg75a5f0c2007-09-18 17:29:20 -04001414/**
1415 * ieee80211_scan_completed - completed hardware scan
1416 *
1417 * When hardware scan offload is used (i.e. the hw_scan() callback is
1418 * assigned) this function needs to be called by the driver to notify
1419 * mac80211 that the scan finished.
1420 *
1421 * @hw: the hardware that finished the scan
1422 */
Jiri Bencf0706e82007-05-05 11:45:53 -07001423void ieee80211_scan_completed(struct ieee80211_hw *hw);
1424
Jiri Bencf0706e82007-05-05 11:45:53 -07001425#endif /* MAC80211_H */