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f0706e82 | 1 | /* |
3017b80b JB |
2 | * mac80211 <-> driver interface |
3 | * | |
f0706e82 JB |
4 | * Copyright 2002-2005, Devicescape Software, Inc. |
5 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
3017b80b | 6 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> |
f0706e82 JB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #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 | ||
75a5f0cc JB |
25 | /** |
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 | |
f0706e82 JB |
38 | * 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 | |
75a5f0cc | 41 | * IEEE 802.11 code call after this, e.g. from a scheduled workqueue function. |
f0706e82 JB |
42 | */ |
43 | ||
75a5f0cc JB |
44 | /** |
45 | * DOC: Warning | |
46 | * | |
47 | * 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 | |
53 | * | |
54 | * 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. | |
f0706e82 JB |
70 | */ |
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 */ | |
83 | struct 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 | |
f0706e82 JB |
98 | #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 | ||
b708e610 | 104 | /* Low-level driver should set PREAMBLE2, OFDM and CCK flags. |
f0706e82 JB |
105 | * BASIC, SUPPORTED, ERP, and MANDATORY flags are set in 80211.o based on the |
106 | * configuration. */ | |
107 | struct 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 | ||
6b301cdf JB |
123 | /** |
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 | */ | |
b708e610 | 132 | enum ieee80211_phymode { |
6b301cdf JB |
133 | MODE_IEEE80211A, |
134 | MODE_IEEE80211B, | |
135 | MODE_IEEE80211G, | |
f0706e82 JB |
136 | |
137 | /* keep last */ | |
138 | NUM_IEEE80211_MODES | |
139 | }; | |
140 | ||
10816d40 RR |
141 | /** |
142 | * struct ieee80211_ht_info - describing STA's HT capabilities | |
143 | * | |
144 | * This structure describes most essential parameters needed | |
145 | * to describe 802.11n HT capabilities for an STA. | |
146 | * | |
147 | * @ht_supported: is HT supported by STA, 0: no, 1: yes | |
148 | * @cap: HT capabilities map as described in 802.11n spec | |
149 | * @ampdu_factor: Maximum A-MPDU length factor | |
150 | * @ampdu_density: Minimum A-MPDU spacing | |
151 | * @supp_mcs_set: Supported MCS set as described in 802.11n spec | |
152 | */ | |
153 | struct ieee80211_ht_info { | |
154 | u8 ht_supported; | |
155 | u16 cap; /* use IEEE80211_HT_CAP_ */ | |
156 | u8 ampdu_factor; | |
157 | u8 ampdu_density; | |
158 | u8 supp_mcs_set[16]; | |
159 | }; | |
160 | ||
161 | /** | |
162 | * struct ieee80211_ht_bss_info - describing BSS's HT characteristics | |
163 | * | |
164 | * This structure describes most essential parameters needed | |
165 | * to describe 802.11n HT characteristics in a BSS | |
166 | * | |
167 | * @primary_channel: channel number of primery channel | |
168 | * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width) | |
169 | * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection) | |
170 | */ | |
171 | struct ieee80211_ht_bss_info { | |
172 | u8 primary_channel; | |
173 | u8 bss_cap; /* use IEEE80211_HT_IE_CHA_ */ | |
174 | u8 bss_op_mode; /* use IEEE80211_HT_IE_ */ | |
175 | }; | |
176 | ||
6b301cdf JB |
177 | /** |
178 | * struct ieee80211_hw_mode - PHY mode definition | |
179 | * | |
180 | * This structure describes the capabilities supported by the device | |
181 | * in a single PHY mode. | |
182 | * | |
10816d40 RR |
183 | * @list: internal |
184 | * @channels: pointer to array of supported channels | |
185 | * @rates: pointer to array of supported bitrates | |
6b301cdf JB |
186 | * @mode: the PHY mode for this definition |
187 | * @num_channels: number of supported channels | |
6b301cdf | 188 | * @num_rates: number of supported bitrates |
10816d40 | 189 | * @ht_info: PHY's 802.11n HT abilities for this mode |
6b301cdf | 190 | */ |
f0706e82 | 191 | struct ieee80211_hw_mode { |
6b301cdf JB |
192 | struct list_head list; |
193 | struct ieee80211_channel *channels; | |
194 | struct ieee80211_rate *rates; | |
195 | enum ieee80211_phymode mode; | |
196 | int num_channels; | |
197 | int num_rates; | |
10816d40 | 198 | struct ieee80211_ht_info ht_info; |
f0706e82 JB |
199 | }; |
200 | ||
6b301cdf JB |
201 | /** |
202 | * struct ieee80211_tx_queue_params - transmit queue configuration | |
203 | * | |
204 | * The information provided in this structure is required for QoS | |
205 | * transmit queue configuration. | |
206 | * | |
207 | * @aifs: arbitration interface space [0..255, -1: use default] | |
208 | * @cw_min: minimum contention window [will be a value of the form | |
209 | * 2^n-1 in the range 1..1023; 0: use default] | |
210 | * @cw_max: maximum contention window [like @cw_min] | |
211 | * @burst_time: maximum burst time in units of 0.1ms, 0 meaning disabled | |
212 | */ | |
f0706e82 | 213 | struct ieee80211_tx_queue_params { |
6b301cdf JB |
214 | int aifs; |
215 | int cw_min; | |
216 | int cw_max; | |
217 | int burst_time; | |
f0706e82 JB |
218 | }; |
219 | ||
6b301cdf JB |
220 | /** |
221 | * struct ieee80211_tx_queue_stats_data - transmit queue statistics | |
222 | * | |
223 | * @len: number of packets in queue | |
224 | * @limit: queue length limit | |
225 | * @count: number of frames sent | |
226 | */ | |
f0706e82 | 227 | struct ieee80211_tx_queue_stats_data { |
6b301cdf JB |
228 | unsigned int len; |
229 | unsigned int limit; | |
230 | unsigned int count; | |
f0706e82 JB |
231 | }; |
232 | ||
6b301cdf JB |
233 | /** |
234 | * enum ieee80211_tx_queue - transmit queue number | |
235 | * | |
236 | * These constants are used with some callbacks that take a | |
237 | * queue number to set parameters for a queue. | |
238 | * | |
239 | * @IEEE80211_TX_QUEUE_DATA0: data queue 0 | |
240 | * @IEEE80211_TX_QUEUE_DATA1: data queue 1 | |
241 | * @IEEE80211_TX_QUEUE_DATA2: data queue 2 | |
242 | * @IEEE80211_TX_QUEUE_DATA3: data queue 3 | |
243 | * @IEEE80211_TX_QUEUE_DATA4: data queue 4 | |
244 | * @IEEE80211_TX_QUEUE_SVP: ?? | |
245 | * @NUM_TX_DATA_QUEUES: number of data queues | |
246 | * @IEEE80211_TX_QUEUE_AFTER_BEACON: transmit queue for frames to be | |
247 | * sent after a beacon | |
248 | * @IEEE80211_TX_QUEUE_BEACON: transmit queue for beacon frames | |
249 | */ | |
250 | enum ieee80211_tx_queue { | |
f0706e82 JB |
251 | IEEE80211_TX_QUEUE_DATA0, |
252 | IEEE80211_TX_QUEUE_DATA1, | |
253 | IEEE80211_TX_QUEUE_DATA2, | |
254 | IEEE80211_TX_QUEUE_DATA3, | |
255 | IEEE80211_TX_QUEUE_DATA4, | |
256 | IEEE80211_TX_QUEUE_SVP, | |
257 | ||
258 | NUM_TX_DATA_QUEUES, | |
259 | ||
260 | /* due to stupidity in the sub-ioctl userspace interface, the items in | |
261 | * this struct need to have fixed values. As soon as it is removed, we can | |
262 | * fix these entries. */ | |
263 | IEEE80211_TX_QUEUE_AFTER_BEACON = 6, | |
264 | IEEE80211_TX_QUEUE_BEACON = 7 | |
265 | }; | |
266 | ||
267 | struct ieee80211_tx_queue_stats { | |
268 | struct ieee80211_tx_queue_stats_data data[NUM_TX_DATA_QUEUES]; | |
269 | }; | |
270 | ||
271 | struct ieee80211_low_level_stats { | |
272 | unsigned int dot11ACKFailureCount; | |
273 | unsigned int dot11RTSFailureCount; | |
274 | unsigned int dot11FCSErrorCount; | |
275 | unsigned int dot11RTSSuccessCount; | |
276 | }; | |
277 | ||
278 | /* Transmit control fields. This data structure is passed to low-level driver | |
279 | * with each TX frame. The low-level driver is responsible for configuring | |
280 | * the hardware to use given values (depending on what is supported). */ | |
f0706e82 JB |
281 | |
282 | struct ieee80211_tx_control { | |
283 | int tx_rate; /* Transmit rate, given as the hw specific value for the | |
284 | * rate (from struct ieee80211_rate) */ | |
285 | int rts_cts_rate; /* Transmit rate for RTS/CTS frame, given as the hw | |
286 | * specific value for the rate (from | |
287 | * struct ieee80211_rate) */ | |
288 | ||
289 | #define IEEE80211_TXCTL_REQ_TX_STATUS (1<<0)/* request TX status callback for | |
290 | * this frame */ | |
291 | #define IEEE80211_TXCTL_DO_NOT_ENCRYPT (1<<1) /* send this frame without | |
292 | * encryption; e.g., for EAPOL | |
293 | * frames */ | |
294 | #define IEEE80211_TXCTL_USE_RTS_CTS (1<<2) /* use RTS-CTS before sending | |
295 | * frame */ | |
296 | #define IEEE80211_TXCTL_USE_CTS_PROTECT (1<<3) /* use CTS protection for the | |
297 | * frame (e.g., for combined | |
298 | * 802.11g / 802.11b networks) */ | |
299 | #define IEEE80211_TXCTL_NO_ACK (1<<4) /* tell the low level not to | |
300 | * wait for an ack */ | |
301 | #define IEEE80211_TXCTL_RATE_CTRL_PROBE (1<<5) | |
302 | #define IEEE80211_TXCTL_CLEAR_DST_MASK (1<<6) | |
303 | #define IEEE80211_TXCTL_REQUEUE (1<<7) | |
304 | #define IEEE80211_TXCTL_FIRST_FRAGMENT (1<<8) /* this is a first fragment of | |
305 | * the frame */ | |
d5d08def ID |
306 | #define IEEE80211_TXCTL_LONG_RETRY_LIMIT (1<<10) /* this frame should be send |
307 | * using the through | |
308 | * set_retry_limit configured | |
309 | * long retry value */ | |
678f5f71 | 310 | #define IEEE80211_TXCTL_EAPOL_FRAME (1<<11) /* internal to mac80211 */ |
7d54d0dd JB |
311 | #define IEEE80211_TXCTL_SEND_AFTER_DTIM (1<<12) /* send this frame after DTIM |
312 | * beacon */ | |
f0706e82 JB |
313 | u32 flags; /* tx control flags defined |
314 | * above */ | |
6a7664d4 JB |
315 | u8 key_idx; /* keyidx from hw->set_key(), undefined if |
316 | * IEEE80211_TXCTL_DO_NOT_ENCRYPT is set */ | |
d5d08def ID |
317 | u8 retry_limit; /* 1 = only first attempt, 2 = one retry, .. |
318 | * This could be used when set_retry_limit | |
319 | * is not implemented by the driver */ | |
f0706e82 JB |
320 | u8 power_level; /* per-packet transmit power level, in dBm */ |
321 | u8 antenna_sel_tx; /* 0 = default/diversity, 1 = Ant0, 2 = Ant1 */ | |
f0706e82 JB |
322 | u8 icv_len; /* length of the ICV/MIC field in octets */ |
323 | u8 iv_len; /* length of the IV field in octets */ | |
f0706e82 JB |
324 | u8 queue; /* hardware queue to use for this frame; |
325 | * 0 = highest, hw->queues-1 = lowest */ | |
f0706e82 JB |
326 | struct ieee80211_rate *rate; /* internal 80211.o rate */ |
327 | struct ieee80211_rate *rts_rate; /* internal 80211.o rate | |
328 | * for RTS/CTS */ | |
329 | int alt_retry_rate; /* retry rate for the last retries, given as the | |
330 | * hw specific value for the rate (from | |
331 | * struct ieee80211_rate). To be used to limit | |
332 | * packet dropping when probing higher rates, if hw | |
333 | * supports multiple retry rates. -1 = not used */ | |
334 | int type; /* internal */ | |
335 | int ifindex; /* internal */ | |
336 | }; | |
337 | ||
7ac1bd6a JB |
338 | |
339 | /** | |
340 | * enum mac80211_rx_flags - receive flags | |
341 | * | |
342 | * These flags are used with the @flag member of &struct ieee80211_rx_status. | |
343 | * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. | |
344 | * Use together with %RX_FLAG_MMIC_STRIPPED. | |
345 | * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. | |
346 | * @RX_FLAG_RADIOTAP: This frame starts with a radiotap header. | |
347 | * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, | |
348 | * verification has been done by the hardware. | |
349 | * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. | |
350 | * If this flag is set, the stack cannot do any replay detection | |
351 | * hence the driver or hardware will have to do that. | |
72abd81b JB |
352 | * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on |
353 | * the frame. | |
354 | * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on | |
355 | * the frame. | |
c49e5ea3 JB |
356 | * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) |
357 | * is valid. | |
7ac1bd6a JB |
358 | */ |
359 | enum mac80211_rx_flags { | |
360 | RX_FLAG_MMIC_ERROR = 1<<0, | |
361 | RX_FLAG_DECRYPTED = 1<<1, | |
362 | RX_FLAG_RADIOTAP = 1<<2, | |
363 | RX_FLAG_MMIC_STRIPPED = 1<<3, | |
364 | RX_FLAG_IV_STRIPPED = 1<<4, | |
72abd81b JB |
365 | RX_FLAG_FAILED_FCS_CRC = 1<<5, |
366 | RX_FLAG_FAILED_PLCP_CRC = 1<<6, | |
c49e5ea3 | 367 | RX_FLAG_TSFT = 1<<7, |
7ac1bd6a JB |
368 | }; |
369 | ||
370 | /** | |
371 | * struct ieee80211_rx_status - receive status | |
372 | * | |
373 | * The low-level driver should provide this information (the subset | |
374 | * supported by hardware) to the 802.11 code with each received | |
375 | * frame. | |
376 | * @mactime: MAC timestamp as defined by 802.11 | |
377 | * @freq: frequency the radio was tuned to when receiving this frame, in MHz | |
378 | * @channel: channel the radio was tuned to | |
379 | * @phymode: active PHY mode | |
380 | * @ssi: signal strength when receiving this frame | |
381 | * @signal: used as 'qual' in statistics reporting | |
382 | * @noise: PHY noise when receiving this frame | |
383 | * @antenna: antenna used | |
384 | * @rate: data rate | |
385 | * @flag: %RX_FLAG_* | |
386 | */ | |
f0706e82 JB |
387 | struct ieee80211_rx_status { |
388 | u64 mactime; | |
7ac1bd6a | 389 | int freq; |
f0706e82 | 390 | int channel; |
6b301cdf | 391 | enum ieee80211_phymode phymode; |
f0706e82 | 392 | int ssi; |
7ac1bd6a | 393 | int signal; |
f0706e82 JB |
394 | int noise; |
395 | int antenna; | |
396 | int rate; | |
f0706e82 JB |
397 | int flag; |
398 | }; | |
399 | ||
6b301cdf JB |
400 | /** |
401 | * enum ieee80211_tx_status_flags - transmit status flags | |
402 | * | |
403 | * Status flags to indicate various transmit conditions. | |
404 | * | |
405 | * @IEEE80211_TX_STATUS_TX_FILTERED: The frame was not transmitted | |
406 | * because the destination STA was in powersave mode. | |
407 | * | |
408 | * @IEEE80211_TX_STATUS_ACK: Frame was acknowledged | |
409 | */ | |
410 | enum ieee80211_tx_status_flags { | |
411 | IEEE80211_TX_STATUS_TX_FILTERED = 1<<0, | |
412 | IEEE80211_TX_STATUS_ACK = 1<<1, | |
413 | }; | |
414 | ||
415 | /** | |
416 | * struct ieee80211_tx_status - transmit status | |
417 | * | |
418 | * As much information as possible should be provided for each transmitted | |
419 | * frame with ieee80211_tx_status(). | |
420 | * | |
421 | * @control: a copy of the &struct ieee80211_tx_control passed to the driver | |
422 | * in the tx() callback. | |
423 | * | |
424 | * @flags: transmit status flags, defined above | |
425 | * | |
426 | * @ack_signal: signal strength of the ACK frame | |
427 | * | |
428 | * @excessive_retries: set to 1 if the frame was retried many times | |
429 | * but not acknowledged | |
430 | * | |
431 | * @retry_count: number of retries | |
432 | * | |
433 | * @queue_length: ?? REMOVE | |
434 | * @queue_number: ?? REMOVE | |
435 | */ | |
f0706e82 | 436 | struct ieee80211_tx_status { |
f0706e82 | 437 | struct ieee80211_tx_control control; |
6b301cdf JB |
438 | u8 flags; |
439 | bool excessive_retries; | |
440 | u8 retry_count; | |
441 | int ack_signal; | |
442 | int queue_length; | |
f0706e82 JB |
443 | int queue_number; |
444 | }; | |
445 | ||
6b301cdf JB |
446 | /** |
447 | * enum ieee80211_conf_flags - configuration flags | |
448 | * | |
449 | * Flags to define PHY configuration options | |
450 | * | |
451 | * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time | |
452 | * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported) | |
10816d40 | 453 | * @IEEE80211_CONF_SUPPORT_HT_MODE: use 802.11n HT capabilities (if supported) |
6b301cdf JB |
454 | */ |
455 | enum ieee80211_conf_flags { | |
10816d40 RR |
456 | IEEE80211_CONF_SHORT_SLOT_TIME = (1<<0), |
457 | IEEE80211_CONF_RADIOTAP = (1<<1), | |
458 | IEEE80211_CONF_SUPPORT_HT_MODE = (1<<2), | |
6b301cdf | 459 | }; |
f0706e82 JB |
460 | |
461 | /** | |
462 | * struct ieee80211_conf - configuration of the device | |
463 | * | |
464 | * This struct indicates how the driver shall configure the hardware. | |
465 | * | |
466 | * @radio_enabled: when zero, driver is required to switch off the radio. | |
6b301cdf JB |
467 | * TODO make a flag |
468 | * @channel: IEEE 802.11 channel number | |
469 | * @freq: frequency in MHz | |
470 | * @channel_val: hardware specific channel value for the channel | |
471 | * @phymode: PHY mode to activate (REMOVE) | |
472 | * @chan: channel to switch to, pointer to the channel information | |
473 | * @mode: pointer to mode definition | |
474 | * @regulatory_domain: ?? | |
475 | * @beacon_int: beacon interval (TODO make interface config) | |
476 | * @flags: configuration flags defined above | |
477 | * @power_level: transmit power limit for current regulatory domain in dBm | |
478 | * @antenna_max: maximum antenna gain | |
479 | * @antenna_sel_tx: transmit antenna selection, 0: default/diversity, | |
480 | * 1/2: antenna 0/1 | |
481 | * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx | |
10816d40 RR |
482 | * @ht_conf: describes current self configuration of 802.11n HT capabilies |
483 | * @ht_bss_conf: describes current BSS configuration of 802.11n HT parameters | |
f0706e82 JB |
484 | */ |
485 | struct ieee80211_conf { | |
486 | int channel; /* IEEE 802.11 channel number */ | |
487 | int freq; /* MHz */ | |
488 | int channel_val; /* hw specific value for the channel */ | |
489 | ||
6b301cdf | 490 | enum ieee80211_phymode phymode; |
f0706e82 JB |
491 | struct ieee80211_channel *chan; |
492 | struct ieee80211_hw_mode *mode; | |
493 | unsigned int regulatory_domain; | |
494 | int radio_enabled; | |
495 | ||
496 | int beacon_int; | |
6b301cdf JB |
497 | u32 flags; |
498 | u8 power_level; | |
499 | u8 antenna_max; | |
f0706e82 JB |
500 | u8 antenna_sel_tx; |
501 | u8 antenna_sel_rx; | |
10816d40 RR |
502 | |
503 | struct ieee80211_ht_info ht_conf; | |
504 | struct ieee80211_ht_bss_info ht_bss_conf; | |
f0706e82 JB |
505 | }; |
506 | ||
507 | /** | |
508 | * enum ieee80211_if_types - types of 802.11 network interfaces | |
509 | * | |
a2897552 JB |
510 | * @IEEE80211_IF_TYPE_INVALID: invalid interface type, not used |
511 | * by mac80211 itself | |
f0706e82 JB |
512 | * @IEEE80211_IF_TYPE_AP: interface in AP mode. |
513 | * @IEEE80211_IF_TYPE_MGMT: special interface for communication with hostap | |
514 | * daemon. Drivers should never see this type. | |
515 | * @IEEE80211_IF_TYPE_STA: interface in STA (client) mode. | |
516 | * @IEEE80211_IF_TYPE_IBSS: interface in IBSS (ad-hoc) mode. | |
517 | * @IEEE80211_IF_TYPE_MNTR: interface in monitor (rfmon) mode. | |
518 | * @IEEE80211_IF_TYPE_WDS: interface in WDS mode. | |
0ec3ca44 JB |
519 | * @IEEE80211_IF_TYPE_VLAN: VLAN interface bound to an AP, drivers |
520 | * will never see this type. | |
f0706e82 JB |
521 | */ |
522 | enum ieee80211_if_types { | |
a2897552 | 523 | IEEE80211_IF_TYPE_INVALID, |
0ec3ca44 | 524 | IEEE80211_IF_TYPE_AP, |
0ec3ca44 JB |
525 | IEEE80211_IF_TYPE_STA, |
526 | IEEE80211_IF_TYPE_IBSS, | |
527 | IEEE80211_IF_TYPE_MNTR, | |
528 | IEEE80211_IF_TYPE_WDS, | |
529 | IEEE80211_IF_TYPE_VLAN, | |
f0706e82 JB |
530 | }; |
531 | ||
532 | /** | |
533 | * struct ieee80211_if_init_conf - initial configuration of an interface | |
534 | * | |
535 | * @if_id: internal interface ID. This number has no particular meaning to | |
536 | * drivers and the only allowed usage is to pass it to | |
537 | * ieee80211_beacon_get() and ieee80211_get_buffered_bc() functions. | |
538 | * This field is not valid for monitor interfaces | |
539 | * (interfaces of %IEEE80211_IF_TYPE_MNTR type). | |
540 | * @type: one of &enum ieee80211_if_types constants. Determines the type of | |
541 | * added/removed interface. | |
542 | * @mac_addr: pointer to MAC address of the interface. This pointer is valid | |
543 | * until the interface is removed (i.e. it cannot be used after | |
544 | * remove_interface() callback was called for this interface). | |
545 | * | |
546 | * This structure is used in add_interface() and remove_interface() | |
547 | * callbacks of &struct ieee80211_hw. | |
4480f15c JB |
548 | * |
549 | * When you allow multiple interfaces to be added to your PHY, take care | |
550 | * that the hardware can actually handle multiple MAC addresses. However, | |
551 | * also take care that when there's no interface left with mac_addr != %NULL | |
552 | * you remove the MAC address from the device to avoid acknowledging packets | |
553 | * in pure monitor mode. | |
f0706e82 JB |
554 | */ |
555 | struct ieee80211_if_init_conf { | |
556 | int if_id; | |
75a5f0cc | 557 | enum ieee80211_if_types type; |
f0706e82 JB |
558 | void *mac_addr; |
559 | }; | |
560 | ||
561 | /** | |
562 | * struct ieee80211_if_conf - configuration of an interface | |
563 | * | |
564 | * @type: type of the interface. This is always the same as was specified in | |
565 | * &struct ieee80211_if_init_conf. The type of an interface never changes | |
566 | * during the life of the interface; this field is present only for | |
567 | * convenience. | |
568 | * @bssid: BSSID of the network we are associated to/creating. | |
569 | * @ssid: used (together with @ssid_len) by drivers for hardware that | |
570 | * generate beacons independently. The pointer is valid only during the | |
571 | * config_interface() call, so copy the value somewhere if you need | |
572 | * it. | |
573 | * @ssid_len: length of the @ssid field. | |
f0706e82 JB |
574 | * @beacon: beacon template. Valid only if @host_gen_beacon_template in |
575 | * &struct ieee80211_hw is set. The driver is responsible of freeing | |
576 | * the sk_buff. | |
577 | * @beacon_control: tx_control for the beacon template, this field is only | |
578 | * valid when the @beacon field was set. | |
579 | * | |
580 | * This structure is passed to the config_interface() callback of | |
581 | * &struct ieee80211_hw. | |
582 | */ | |
583 | struct ieee80211_if_conf { | |
584 | int type; | |
585 | u8 *bssid; | |
586 | u8 *ssid; | |
587 | size_t ssid_len; | |
f0706e82 JB |
588 | struct sk_buff *beacon; |
589 | struct ieee80211_tx_control *beacon_control; | |
590 | }; | |
591 | ||
7ac1bd6a JB |
592 | /** |
593 | * enum ieee80211_key_alg - key algorithm | |
7ac1bd6a JB |
594 | * @ALG_WEP: WEP40 or WEP104 |
595 | * @ALG_TKIP: TKIP | |
596 | * @ALG_CCMP: CCMP (AES) | |
597 | */ | |
ea49c359 | 598 | enum ieee80211_key_alg { |
8f20fc24 JB |
599 | ALG_WEP, |
600 | ALG_TKIP, | |
601 | ALG_CCMP, | |
ea49c359 | 602 | }; |
f0706e82 | 603 | |
7ac1bd6a JB |
604 | |
605 | /** | |
606 | * enum ieee80211_key_flags - key flags | |
607 | * | |
608 | * These flags are used for communication about keys between the driver | |
609 | * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. | |
610 | * | |
611 | * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates | |
612 | * that the STA this key will be used with could be using QoS. | |
613 | * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the | |
614 | * driver to indicate that it requires IV generation for this | |
615 | * particular key. | |
616 | * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by | |
617 | * the driver for a TKIP key if it requires Michael MIC | |
618 | * generation in software. | |
7848ba7d | 619 | */ |
7ac1bd6a JB |
620 | enum ieee80211_key_flags { |
621 | IEEE80211_KEY_FLAG_WMM_STA = 1<<0, | |
622 | IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, | |
623 | IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, | |
624 | }; | |
11a843b7 | 625 | |
7ac1bd6a JB |
626 | /** |
627 | * struct ieee80211_key_conf - key information | |
628 | * | |
629 | * This key information is given by mac80211 to the driver by | |
630 | * the set_key() callback in &struct ieee80211_ops. | |
631 | * | |
632 | * @hw_key_idx: To be set by the driver, this is the key index the driver | |
633 | * wants to be given when a frame is transmitted and needs to be | |
6a7664d4 | 634 | * encrypted in hardware. |
7ac1bd6a JB |
635 | * @alg: The key algorithm. |
636 | * @flags: key flags, see &enum ieee80211_key_flags. | |
637 | * @keyidx: the key index (0-3) | |
638 | * @keylen: key material length | |
639 | * @key: key material | |
640 | */ | |
f0706e82 | 641 | struct ieee80211_key_conf { |
ea49c359 | 642 | enum ieee80211_key_alg alg; |
6a7664d4 | 643 | u8 hw_key_idx; |
11a843b7 | 644 | u8 flags; |
11a843b7 | 645 | s8 keyidx; |
11a843b7 | 646 | u8 keylen; |
f0706e82 JB |
647 | u8 key[0]; |
648 | }; | |
649 | ||
7ac1bd6a JB |
650 | /** |
651 | * enum set_key_cmd - key command | |
652 | * | |
653 | * Used with the set_key() callback in &struct ieee80211_ops, this | |
654 | * indicates whether a key is being removed or added. | |
655 | * | |
656 | * @SET_KEY: a key is set | |
657 | * @DISABLE_KEY: a key must be disabled | |
658 | */ | |
ea49c359 | 659 | enum set_key_cmd { |
11a843b7 | 660 | SET_KEY, DISABLE_KEY, |
ea49c359 | 661 | }; |
f0706e82 | 662 | |
478f8d2b TW |
663 | /** |
664 | * enum sta_notify_cmd - sta notify command | |
665 | * | |
666 | * Used with the sta_notify() callback in &struct ieee80211_ops, this | |
667 | * indicates addition and removal of a station to station table | |
668 | * | |
669 | * @STA_NOTIFY_ADD: a station was added to the station table | |
670 | * @STA_NOTIFY_REMOVE: a station being removed from the station table | |
671 | */ | |
672 | enum sta_notify_cmd { | |
673 | STA_NOTIFY_ADD, STA_NOTIFY_REMOVE | |
674 | }; | |
1bc0826c JB |
675 | |
676 | /** | |
677 | * enum ieee80211_hw_flags - hardware flags | |
678 | * | |
679 | * These flags are used to indicate hardware capabilities to | |
680 | * the stack. Generally, flags here should have their meaning | |
681 | * done in a way that the simplest hardware doesn't need setting | |
682 | * any particular flags. There are some exceptions to this rule, | |
683 | * however, so you are advised to review these flags carefully. | |
684 | * | |
685 | * @IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE: | |
686 | * The device only needs to be supplied with a beacon template. | |
687 | * If you need the host to generate each beacon then don't use | |
688 | * this flag and call ieee80211_beacon_get() when you need the | |
689 | * next beacon frame. Note that if you set this flag, you must | |
690 | * implement the set_tim() callback for powersave mode to work | |
691 | * properly. | |
692 | * This flag is only relevant for access-point mode. | |
693 | * | |
694 | * @IEEE80211_HW_RX_INCLUDES_FCS: | |
695 | * Indicates that received frames passed to the stack include | |
696 | * the FCS at the end. | |
697 | * | |
698 | * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: | |
699 | * Some wireless LAN chipsets buffer broadcast/multicast frames | |
700 | * for power saving stations in the hardware/firmware and others | |
701 | * rely on the host system for such buffering. This option is used | |
702 | * to configure the IEEE 802.11 upper layer to buffer broadcast and | |
703 | * multicast frames when there are power saving stations so that | |
704 | * the driver can fetch them with ieee80211_get_buffered_bc(). Note | |
705 | * that not setting this flag works properly only when the | |
706 | * %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is also not set because | |
707 | * otherwise the stack will not know when the DTIM beacon was sent. | |
708 | * | |
709 | * @IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED: | |
710 | * Channels are already configured to the default regulatory domain | |
711 | * specified in the device's EEPROM | |
712 | */ | |
713 | enum ieee80211_hw_flags { | |
714 | IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE = 1<<0, | |
715 | IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, | |
716 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, | |
717 | IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED = 1<<3, | |
718 | }; | |
719 | ||
7ac1bd6a JB |
720 | /** |
721 | * struct ieee80211_hw - hardware information and state | |
75a5f0cc JB |
722 | * |
723 | * This structure contains the configuration and hardware | |
724 | * information for an 802.11 PHY. | |
725 | * | |
726 | * @wiphy: This points to the &struct wiphy allocated for this | |
727 | * 802.11 PHY. You must fill in the @perm_addr and @dev | |
728 | * members of this structure using SET_IEEE80211_DEV() | |
729 | * and SET_IEEE80211_PERM_ADDR(). | |
730 | * | |
731 | * @conf: &struct ieee80211_conf, device configuration, don't use. | |
732 | * | |
733 | * @workqueue: single threaded workqueue available for driver use, | |
734 | * allocated by mac80211 on registration and flushed on | |
735 | * unregistration. | |
736 | * | |
737 | * @priv: pointer to private area that was allocated for driver use | |
738 | * along with this structure. | |
739 | * | |
740 | * @flags: hardware flags, see &enum ieee80211_hw_flags. | |
741 | * | |
742 | * @extra_tx_headroom: headroom to reserve in each transmit skb | |
743 | * for use by the driver (e.g. for transmit headers.) | |
744 | * | |
745 | * @channel_change_time: time (in microseconds) it takes to change channels. | |
746 | * | |
747 | * @max_rssi: Maximum value for ssi in RX information, use | |
748 | * negative numbers for dBm and 0 to indicate no support. | |
749 | * | |
750 | * @max_signal: like @max_rssi, but for the signal value. | |
751 | * | |
752 | * @max_noise: like @max_rssi, but for the noise value. | |
753 | * | |
754 | * @queues: number of available hardware transmit queues for | |
755 | * data packets. WMM/QoS requires at least four. | |
830f9038 JB |
756 | * |
757 | * @rate_control_algorithm: rate control algorithm for this hardware. | |
758 | * If unset (NULL), the default algorithm will be used. Must be | |
759 | * set before calling ieee80211_register_hw(). | |
7ac1bd6a | 760 | */ |
f0706e82 | 761 | struct ieee80211_hw { |
f0706e82 | 762 | struct ieee80211_conf conf; |
75a5f0cc | 763 | struct wiphy *wiphy; |
f0706e82 | 764 | struct workqueue_struct *workqueue; |
830f9038 | 765 | const char *rate_control_algorithm; |
f0706e82 | 766 | void *priv; |
75a5f0cc | 767 | u32 flags; |
f0706e82 | 768 | unsigned int extra_tx_headroom; |
f0706e82 | 769 | int channel_change_time; |
75a5f0cc | 770 | u8 queues; |
f0706e82 JB |
771 | s8 max_rssi; |
772 | s8 max_signal; | |
773 | s8 max_noise; | |
f0706e82 JB |
774 | }; |
775 | ||
75a5f0cc JB |
776 | /** |
777 | * SET_IEEE80211_DEV - set device for 802.11 hardware | |
778 | * | |
779 | * @hw: the &struct ieee80211_hw to set the device for | |
780 | * @dev: the &struct device of this 802.11 device | |
781 | */ | |
f0706e82 JB |
782 | static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) |
783 | { | |
784 | set_wiphy_dev(hw->wiphy, dev); | |
785 | } | |
786 | ||
75a5f0cc JB |
787 | /** |
788 | * SET_IEEE80211_PERM_ADDR - set the permanenet MAC address for 802.11 hardware | |
789 | * | |
790 | * @hw: the &struct ieee80211_hw to set the MAC address for | |
791 | * @addr: the address to set | |
792 | */ | |
f0706e82 JB |
793 | static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) |
794 | { | |
795 | memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); | |
796 | } | |
797 | ||
75a5f0cc JB |
798 | /** |
799 | * DOC: Hardware crypto acceleration | |
800 | * | |
801 | * mac80211 is capable of taking advantage of many hardware | |
802 | * acceleration designs for encryption and decryption operations. | |
803 | * | |
804 | * The set_key() callback in the &struct ieee80211_ops for a given | |
805 | * device is called to enable hardware acceleration of encryption and | |
806 | * decryption. The callback takes an @address parameter that will be | |
807 | * the broadcast address for default keys, the other station's hardware | |
808 | * address for individual keys or the zero address for keys that will | |
809 | * be used only for transmission. | |
810 | * Multiple transmission keys with the same key index may be used when | |
811 | * VLANs are configured for an access point. | |
4150c572 | 812 | * |
75a5f0cc JB |
813 | * The @local_address parameter will always be set to our own address, |
814 | * this is only relevant if you support multiple local addresses. | |
815 | * | |
816 | * When transmitting, the TX control data will use the @hw_key_idx | |
817 | * selected by the driver by modifying the &struct ieee80211_key_conf | |
818 | * pointed to by the @key parameter to the set_key() function. | |
819 | * | |
820 | * The set_key() call for the %SET_KEY command should return 0 if | |
821 | * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be | |
822 | * added; if you return 0 then hw_key_idx must be assigned to the | |
823 | * hardware key index, you are free to use the full u8 range. | |
824 | * | |
825 | * When the cmd is %DISABLE_KEY then it must succeed. | |
826 | * | |
827 | * Note that it is permissible to not decrypt a frame even if a key | |
828 | * for it has been uploaded to hardware, the stack will not make any | |
829 | * decision based on whether a key has been uploaded or not but rather | |
830 | * based on the receive flags. | |
831 | * | |
832 | * The &struct ieee80211_key_conf structure pointed to by the @key | |
833 | * parameter is guaranteed to be valid until another call to set_key() | |
834 | * removes it, but it can only be used as a cookie to differentiate | |
835 | * keys. | |
4150c572 | 836 | */ |
75a5f0cc JB |
837 | |
838 | /** | |
839 | * DOC: Frame filtering | |
840 | * | |
841 | * mac80211 requires to see many management frames for proper | |
842 | * operation, and users may want to see many more frames when | |
843 | * in monitor mode. However, for best CPU usage and power consumption, | |
844 | * having as few frames as possible percolate through the stack is | |
845 | * desirable. Hence, the hardware should filter as much as possible. | |
846 | * | |
847 | * To achieve this, mac80211 uses filter flags (see below) to tell | |
848 | * the driver's configure_filter() function which frames should be | |
849 | * passed to mac80211 and which should be filtered out. | |
850 | * | |
851 | * The configure_filter() callback is invoked with the parameters | |
852 | * @mc_count and @mc_list for the combined multicast address list | |
853 | * of all virtual interfaces, @changed_flags telling which flags | |
854 | * were changed and @total_flags with the new flag states. | |
855 | * | |
856 | * If your device has no multicast address filters your driver will | |
857 | * need to check both the %FIF_ALLMULTI flag and the @mc_count | |
858 | * parameter to see whether multicast frames should be accepted | |
859 | * or dropped. | |
860 | * | |
861 | * All unsupported flags in @total_flags must be cleared, i.e. you | |
862 | * should clear all bits except those you honoured. | |
4150c572 | 863 | */ |
75a5f0cc JB |
864 | |
865 | /** | |
866 | * enum ieee80211_filter_flags - hardware filter flags | |
867 | * | |
868 | * These flags determine what the filter in hardware should be | |
869 | * programmed to let through and what should not be passed to the | |
870 | * stack. It is always safe to pass more frames than requested, | |
871 | * but this has negative impact on power consumption. | |
872 | * | |
873 | * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, | |
874 | * think of the BSS as your network segment and then this corresponds | |
875 | * to the regular ethernet device promiscuous mode. | |
876 | * | |
877 | * @FIF_ALLMULTI: pass all multicast frames, this is used if requested | |
878 | * by the user or if the hardware is not capable of filtering by | |
879 | * multicast address. | |
880 | * | |
881 | * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the | |
882 | * %RX_FLAG_FAILED_FCS_CRC for them) | |
883 | * | |
884 | * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set | |
885 | * the %RX_FLAG_FAILED_PLCP_CRC for them | |
886 | * | |
887 | * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate | |
888 | * to the hardware that it should not filter beacons or probe responses | |
889 | * by BSSID. Filtering them can greatly reduce the amount of processing | |
890 | * mac80211 needs to do and the amount of CPU wakeups, so you should | |
891 | * honour this flag if possible. | |
892 | * | |
893 | * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then | |
894 | * only those addressed to this station | |
895 | * | |
896 | * @FIF_OTHER_BSS: pass frames destined to other BSSes | |
4150c572 | 897 | */ |
75a5f0cc JB |
898 | enum ieee80211_filter_flags { |
899 | FIF_PROMISC_IN_BSS = 1<<0, | |
900 | FIF_ALLMULTI = 1<<1, | |
901 | FIF_FCSFAIL = 1<<2, | |
902 | FIF_PLCPFAIL = 1<<3, | |
903 | FIF_BCN_PRBRESP_PROMISC = 1<<4, | |
904 | FIF_CONTROL = 1<<5, | |
905 | FIF_OTHER_BSS = 1<<6, | |
906 | }; | |
907 | ||
908 | /** | |
909 | * enum ieee80211_erp_change_flags - erp change flags | |
910 | * | |
911 | * These flags are used with the erp_ie_changed() callback in | |
912 | * &struct ieee80211_ops to indicate which parameter(s) changed. | |
913 | * @IEEE80211_ERP_CHANGE_PROTECTION: protection changed | |
914 | * @IEEE80211_ERP_CHANGE_PREAMBLE: barker preamble mode changed | |
4150c572 | 915 | */ |
75a5f0cc JB |
916 | enum ieee80211_erp_change_flags { |
917 | IEEE80211_ERP_CHANGE_PROTECTION = 1<<0, | |
918 | IEEE80211_ERP_CHANGE_PREAMBLE = 1<<1, | |
919 | }; | |
4150c572 | 920 | |
1b7d03ac RR |
921 | /** |
922 | * enum ieee80211_ampdu_mlme_action - A-MPDU actions | |
923 | * | |
924 | * These flags are used with the ampdu_action() callback in | |
925 | * &struct ieee80211_ops to indicate which action is needed. | |
926 | * @IEEE80211_AMPDU_RX_START: start Rx aggregation | |
927 | * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation | |
928 | */ | |
929 | enum ieee80211_ampdu_mlme_action { | |
930 | IEEE80211_AMPDU_RX_START, | |
931 | IEEE80211_AMPDU_RX_STOP, | |
932 | }; | |
75a5f0cc JB |
933 | |
934 | /** | |
935 | * struct ieee80211_ops - callbacks from mac80211 to the driver | |
936 | * | |
937 | * This structure contains various callbacks that the driver may | |
938 | * handle or, in some cases, must handle, for example to configure | |
939 | * the hardware to a new channel or to transmit a frame. | |
940 | * | |
941 | * @tx: Handler that 802.11 module calls for each transmitted frame. | |
942 | * skb contains the buffer starting from the IEEE 802.11 header. | |
943 | * The low-level driver should send the frame out based on | |
944 | * configuration in the TX control data. Must be implemented and | |
945 | * atomic. | |
946 | * | |
947 | * @start: Called before the first netdevice attached to the hardware | |
948 | * is enabled. This should turn on the hardware and must turn on | |
949 | * frame reception (for possibly enabled monitor interfaces.) | |
950 | * Returns negative error codes, these may be seen in userspace, | |
951 | * or zero. | |
952 | * When the device is started it should not have a MAC address | |
953 | * to avoid acknowledging frames before a non-monitor device | |
954 | * is added. | |
955 | * Must be implemented. | |
956 | * | |
957 | * @stop: Called after last netdevice attached to the hardware | |
958 | * is disabled. This should turn off the hardware (at least | |
959 | * it must turn off frame reception.) | |
960 | * May be called right after add_interface if that rejects | |
961 | * an interface. | |
962 | * Must be implemented. | |
963 | * | |
964 | * @add_interface: Called when a netdevice attached to the hardware is | |
965 | * enabled. Because it is not called for monitor mode devices, @open | |
966 | * and @stop must be implemented. | |
967 | * The driver should perform any initialization it needs before | |
968 | * the device can be enabled. The initial configuration for the | |
969 | * interface is given in the conf parameter. | |
970 | * The callback may refuse to add an interface by returning a | |
971 | * negative error code (which will be seen in userspace.) | |
972 | * Must be implemented. | |
973 | * | |
974 | * @remove_interface: Notifies a driver that an interface is going down. | |
975 | * The @stop callback is called after this if it is the last interface | |
976 | * and no monitor interfaces are present. | |
977 | * When all interfaces are removed, the MAC address in the hardware | |
978 | * must be cleared so the device no longer acknowledges packets, | |
979 | * the mac_addr member of the conf structure is, however, set to the | |
980 | * MAC address of the device going away. | |
981 | * Hence, this callback must be implemented. | |
982 | * | |
983 | * @config: Handler for configuration requests. IEEE 802.11 code calls this | |
984 | * function to change hardware configuration, e.g., channel. | |
985 | * | |
986 | * @config_interface: Handler for configuration requests related to interfaces | |
987 | * (e.g. BSSID changes.) | |
988 | * | |
989 | * @configure_filter: Configure the device's RX filter. | |
990 | * See the section "Frame filtering" for more information. | |
991 | * This callback must be implemented and atomic. | |
992 | * | |
993 | * @set_tim: Set TIM bit. If the hardware/firmware takes care of beacon | |
994 | * generation (that is, %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is set) | |
995 | * mac80211 calls this function when a TIM bit must be set or cleared | |
996 | * for a given AID. Must be atomic. | |
997 | * | |
998 | * @set_key: See the section "Hardware crypto acceleration" | |
999 | * This callback can sleep, and is only called between add_interface | |
1000 | * and remove_interface calls, i.e. while the interface with the | |
1001 | * given local_address is enabled. | |
1002 | * | |
75a5f0cc JB |
1003 | * @hw_scan: Ask the hardware to service the scan request, no need to start |
1004 | * the scan state machine in stack. | |
1005 | * | |
1006 | * @get_stats: return low-level statistics | |
1007 | * | |
62da92fb JB |
1008 | * @get_tkip_seq: If your device implements TKIP encryption in hardware this |
1009 | * callback should be provided to read the TKIP transmit IVs (both IV32 | |
1010 | * and IV16) for the given key from hardware. | |
75a5f0cc JB |
1011 | * |
1012 | * @set_rts_threshold: Configuration of RTS threshold (if device needs it) | |
1013 | * | |
1014 | * @set_frag_threshold: Configuration of fragmentation threshold. Assign this if | |
1015 | * the device does fragmentation by itself; if this method is assigned then | |
1016 | * the stack will not do fragmentation. | |
1017 | * | |
1018 | * @set_retry_limit: Configuration of retry limits (if device needs it) | |
1019 | * | |
478f8d2b TW |
1020 | * @sta_notify: Notifies low level driver about addition or removal |
1021 | * of assocaited station or AP. | |
75a5f0cc JB |
1022 | * |
1023 | * @erp_ie_changed: Handle ERP IE change notifications. Must be atomic. | |
1024 | * | |
1025 | * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), | |
1026 | * bursting) for a hardware TX queue. The @queue parameter uses the | |
1027 | * %IEEE80211_TX_QUEUE_* constants. Must be atomic. | |
1028 | * | |
1029 | * @get_tx_stats: Get statistics of the current TX queue status. This is used | |
1030 | * to get number of currently queued packets (queue length), maximum queue | |
1031 | * size (limit), and total number of packets sent using each TX queue | |
1032 | * (count). This information is used for WMM to find out which TX | |
1033 | * queues have room for more packets and by hostapd to provide | |
1034 | * statistics about the current queueing state to external programs. | |
1035 | * | |
1036 | * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, | |
1037 | * this is only used for IBSS mode debugging and, as such, is not a | |
1038 | * required function. Must be atomic. | |
1039 | * | |
1040 | * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize | |
1041 | * with other STAs in the IBSS. This is only used in IBSS mode. This | |
1042 | * function is optional if the firmware/hardware takes full care of | |
1043 | * TSF synchronization. | |
1044 | * | |
1045 | * @beacon_update: Setup beacon data for IBSS beacons. Unlike access point, | |
1046 | * IBSS uses a fixed beacon frame which is configured using this | |
5ecc2a5d MB |
1047 | * function. |
1048 | * If the driver returns success (0) from this callback, it owns | |
1049 | * the skb. That means the driver is responsible to kfree_skb() it. | |
1050 | * The control structure is not dynamically allocated. That means the | |
1051 | * driver does not own the pointer and if it needs it somewhere | |
1052 | * outside of the context of this function, it must copy it | |
1053 | * somewhere else. | |
1054 | * This handler is required only for IBSS mode. | |
75a5f0cc JB |
1055 | * |
1056 | * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. | |
1057 | * This is needed only for IBSS mode and the result of this function is | |
1058 | * used to determine whether to reply to Probe Requests. | |
d3c990fb RR |
1059 | * |
1060 | * @conf_ht: Configures low level driver with 802.11n HT data. Must be atomic. | |
1b7d03ac RR |
1061 | * |
1062 | * @ampdu_action: Perform a certain A-MPDU action | |
1063 | * The RA/TID combination determines the destination and TID we want | |
1064 | * the ampdu action to be performed for. The action is defined through | |
1065 | * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) | |
1066 | * is the first frame we expect to perform the action on. | |
75a5f0cc | 1067 | */ |
f0706e82 | 1068 | struct ieee80211_ops { |
f0706e82 JB |
1069 | int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb, |
1070 | struct ieee80211_tx_control *control); | |
4150c572 | 1071 | int (*start)(struct ieee80211_hw *hw); |
4150c572 | 1072 | void (*stop)(struct ieee80211_hw *hw); |
f0706e82 JB |
1073 | int (*add_interface)(struct ieee80211_hw *hw, |
1074 | struct ieee80211_if_init_conf *conf); | |
f0706e82 JB |
1075 | void (*remove_interface)(struct ieee80211_hw *hw, |
1076 | struct ieee80211_if_init_conf *conf); | |
f0706e82 | 1077 | int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
f0706e82 JB |
1078 | int (*config_interface)(struct ieee80211_hw *hw, |
1079 | int if_id, struct ieee80211_if_conf *conf); | |
4150c572 JB |
1080 | void (*configure_filter)(struct ieee80211_hw *hw, |
1081 | unsigned int changed_flags, | |
1082 | unsigned int *total_flags, | |
1083 | int mc_count, struct dev_addr_list *mc_list); | |
f0706e82 | 1084 | int (*set_tim)(struct ieee80211_hw *hw, int aid, int set); |
ea49c359 | 1085 | int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
11a843b7 JB |
1086 | const u8 *local_address, const u8 *address, |
1087 | struct ieee80211_key_conf *key); | |
f0706e82 | 1088 | int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len); |
f0706e82 JB |
1089 | int (*get_stats)(struct ieee80211_hw *hw, |
1090 | struct ieee80211_low_level_stats *stats); | |
62da92fb JB |
1091 | void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, |
1092 | u32 *iv32, u16 *iv16); | |
f0706e82 | 1093 | int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); |
f0706e82 | 1094 | int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); |
f0706e82 JB |
1095 | int (*set_retry_limit)(struct ieee80211_hw *hw, |
1096 | u32 short_retry, u32 long_retr); | |
478f8d2b TW |
1097 | void (*sta_notify)(struct ieee80211_hw *hw, int if_id, |
1098 | enum sta_notify_cmd, const u8 *addr); | |
d9430a32 DD |
1099 | void (*erp_ie_changed)(struct ieee80211_hw *hw, u8 changes, |
1100 | int cts_protection, int preamble); | |
f0706e82 JB |
1101 | int (*conf_tx)(struct ieee80211_hw *hw, int queue, |
1102 | const struct ieee80211_tx_queue_params *params); | |
f0706e82 JB |
1103 | int (*get_tx_stats)(struct ieee80211_hw *hw, |
1104 | struct ieee80211_tx_queue_stats *stats); | |
f0706e82 | 1105 | u64 (*get_tsf)(struct ieee80211_hw *hw); |
f0706e82 | 1106 | void (*reset_tsf)(struct ieee80211_hw *hw); |
f0706e82 JB |
1107 | int (*beacon_update)(struct ieee80211_hw *hw, |
1108 | struct sk_buff *skb, | |
1109 | struct ieee80211_tx_control *control); | |
f0706e82 | 1110 | int (*tx_last_beacon)(struct ieee80211_hw *hw); |
d3c990fb | 1111 | int (*conf_ht)(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
1b7d03ac RR |
1112 | int (*ampdu_action)(struct ieee80211_hw *hw, |
1113 | enum ieee80211_ampdu_mlme_action action, | |
1114 | const u8 *ra, u16 tid, u16 ssn); | |
f0706e82 JB |
1115 | }; |
1116 | ||
75a5f0cc JB |
1117 | /** |
1118 | * ieee80211_alloc_hw - Allocate a new hardware device | |
1119 | * | |
1120 | * This must be called once for each hardware device. The returned pointer | |
1121 | * must be used to refer to this device when calling other functions. | |
1122 | * mac80211 allocates a private data area for the driver pointed to by | |
1123 | * @priv in &struct ieee80211_hw, the size of this area is given as | |
1124 | * @priv_data_len. | |
1125 | * | |
1126 | * @priv_data_len: length of private data | |
1127 | * @ops: callbacks for this device | |
f0706e82 JB |
1128 | */ |
1129 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, | |
1130 | const struct ieee80211_ops *ops); | |
1131 | ||
75a5f0cc JB |
1132 | /** |
1133 | * ieee80211_register_hw - Register hardware device | |
1134 | * | |
1135 | * You must call this function before any other functions | |
1136 | * except ieee80211_register_hwmode. | |
1137 | * | |
1138 | * @hw: the device to register as returned by ieee80211_alloc_hw() | |
1139 | */ | |
f0706e82 JB |
1140 | int ieee80211_register_hw(struct ieee80211_hw *hw); |
1141 | ||
f0706e82 JB |
1142 | #ifdef CONFIG_MAC80211_LEDS |
1143 | extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); | |
1144 | extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); | |
47f0c502 | 1145 | extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); |
cdcb006f | 1146 | extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); |
f0706e82 | 1147 | #endif |
75a5f0cc JB |
1148 | /** |
1149 | * ieee80211_get_tx_led_name - get name of TX LED | |
1150 | * | |
1151 | * mac80211 creates a transmit LED trigger for each wireless hardware | |
1152 | * that can be used to drive LEDs if your driver registers a LED device. | |
1153 | * This function returns the name (or %NULL if not configured for LEDs) | |
1154 | * of the trigger so you can automatically link the LED device. | |
1155 | * | |
1156 | * @hw: the hardware to get the LED trigger name for | |
1157 | */ | |
f0706e82 JB |
1158 | static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
1159 | { | |
1160 | #ifdef CONFIG_MAC80211_LEDS | |
1161 | return __ieee80211_get_tx_led_name(hw); | |
1162 | #else | |
1163 | return NULL; | |
1164 | #endif | |
1165 | } | |
1166 | ||
75a5f0cc JB |
1167 | /** |
1168 | * ieee80211_get_rx_led_name - get name of RX LED | |
1169 | * | |
1170 | * mac80211 creates a receive LED trigger for each wireless hardware | |
1171 | * that can be used to drive LEDs if your driver registers a LED device. | |
1172 | * This function returns the name (or %NULL if not configured for LEDs) | |
1173 | * of the trigger so you can automatically link the LED device. | |
1174 | * | |
1175 | * @hw: the hardware to get the LED trigger name for | |
1176 | */ | |
f0706e82 JB |
1177 | static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
1178 | { | |
1179 | #ifdef CONFIG_MAC80211_LEDS | |
1180 | return __ieee80211_get_rx_led_name(hw); | |
1181 | #else | |
1182 | return NULL; | |
1183 | #endif | |
1184 | } | |
1185 | ||
cdcb006f ID |
1186 | /** |
1187 | * ieee80211_get_assoc_led_name - get name of association LED | |
1188 | * | |
1189 | * mac80211 creates a association LED trigger for each wireless hardware | |
1190 | * that can be used to drive LEDs if your driver registers a LED device. | |
1191 | * This function returns the name (or %NULL if not configured for LEDs) | |
1192 | * of the trigger so you can automatically link the LED device. | |
1193 | * | |
1194 | * @hw: the hardware to get the LED trigger name for | |
1195 | */ | |
47f0c502 MB |
1196 | static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
1197 | { | |
1198 | #ifdef CONFIG_MAC80211_LEDS | |
1199 | return __ieee80211_get_assoc_led_name(hw); | |
1200 | #else | |
1201 | return NULL; | |
1202 | #endif | |
1203 | } | |
1204 | ||
cdcb006f ID |
1205 | /** |
1206 | * ieee80211_get_radio_led_name - get name of radio LED | |
1207 | * | |
1208 | * mac80211 creates a radio change LED trigger for each wireless hardware | |
1209 | * that can be used to drive LEDs if your driver registers a LED device. | |
1210 | * This function returns the name (or %NULL if not configured for LEDs) | |
1211 | * of the trigger so you can automatically link the LED device. | |
1212 | * | |
1213 | * @hw: the hardware to get the LED trigger name for | |
1214 | */ | |
1215 | static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) | |
1216 | { | |
1217 | #ifdef CONFIG_MAC80211_LEDS | |
1218 | return __ieee80211_get_radio_led_name(hw); | |
1219 | #else | |
1220 | return NULL; | |
1221 | #endif | |
1222 | } | |
47f0c502 | 1223 | |
f0706e82 JB |
1224 | /* Register a new hardware PHYMODE capability to the stack. */ |
1225 | int ieee80211_register_hwmode(struct ieee80211_hw *hw, | |
1226 | struct ieee80211_hw_mode *mode); | |
1227 | ||
75a5f0cc JB |
1228 | /** |
1229 | * ieee80211_unregister_hw - Unregister a hardware device | |
1230 | * | |
1231 | * This function instructs mac80211 to free allocated resources | |
1232 | * and unregister netdevices from the networking subsystem. | |
1233 | * | |
1234 | * @hw: the hardware to unregister | |
1235 | */ | |
f0706e82 JB |
1236 | void ieee80211_unregister_hw(struct ieee80211_hw *hw); |
1237 | ||
75a5f0cc JB |
1238 | /** |
1239 | * ieee80211_free_hw - free hardware descriptor | |
1240 | * | |
1241 | * This function frees everything that was allocated, including the | |
1242 | * private data for the driver. You must call ieee80211_unregister_hw() | |
1243 | * before calling this function | |
1244 | * | |
1245 | * @hw: the hardware to free | |
1246 | */ | |
f0706e82 JB |
1247 | void ieee80211_free_hw(struct ieee80211_hw *hw); |
1248 | ||
75a5f0cc | 1249 | /* trick to avoid symbol clashes with the ieee80211 subsystem */ |
f0706e82 JB |
1250 | void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, |
1251 | struct ieee80211_rx_status *status); | |
75a5f0cc JB |
1252 | |
1253 | /** | |
1254 | * ieee80211_rx - receive frame | |
1255 | * | |
1256 | * Use this function to hand received frames to mac80211. The receive | |
1257 | * buffer in @skb must start with an IEEE 802.11 header or a radiotap | |
1258 | * header if %RX_FLAG_RADIOTAP is set in the @status flags. | |
1259 | * | |
1260 | * This function may not be called in IRQ context. | |
1261 | * | |
1262 | * @hw: the hardware this frame came in on | |
1263 | * @skb: the buffer to receive, owned by mac80211 after this call | |
1264 | * @status: status of this frame; the status pointer need not be valid | |
1265 | * after this function returns | |
1266 | */ | |
1267 | static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, | |
1268 | struct ieee80211_rx_status *status) | |
1269 | { | |
1270 | __ieee80211_rx(hw, skb, status); | |
1271 | } | |
1272 | ||
1273 | /** | |
1274 | * ieee80211_rx_irqsafe - receive frame | |
1275 | * | |
1276 | * Like ieee80211_rx() but can be called in IRQ context | |
1277 | * (internally defers to a workqueue.) | |
1278 | * | |
1279 | * @hw: the hardware this frame came in on | |
1280 | * @skb: the buffer to receive, owned by mac80211 after this call | |
1281 | * @status: status of this frame; the status pointer need not be valid | |
1282 | * after this function returns and is not freed by mac80211, | |
1283 | * it is recommended that it points to a stack area | |
1284 | */ | |
f0706e82 JB |
1285 | void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, |
1286 | struct sk_buff *skb, | |
1287 | struct ieee80211_rx_status *status); | |
1288 | ||
75a5f0cc JB |
1289 | /** |
1290 | * ieee80211_tx_status - transmit status callback | |
1291 | * | |
1292 | * Call this function for all transmitted frames after they have been | |
1293 | * transmitted. It is permissible to not call this function for | |
1294 | * multicast frames but this can affect statistics. | |
1295 | * | |
1296 | * @hw: the hardware the frame was transmitted by | |
1297 | * @skb: the frame that was transmitted, owned by mac80211 after this call | |
1298 | * @status: status information for this frame; the status pointer need not | |
1299 | * be valid after this function returns and is not freed by mac80211, | |
1300 | * it is recommended that it points to a stack area | |
1301 | */ | |
f0706e82 JB |
1302 | void ieee80211_tx_status(struct ieee80211_hw *hw, |
1303 | struct sk_buff *skb, | |
1304 | struct ieee80211_tx_status *status); | |
1305 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, | |
1306 | struct sk_buff *skb, | |
1307 | struct ieee80211_tx_status *status); | |
1308 | ||
1309 | /** | |
1310 | * ieee80211_beacon_get - beacon generation function | |
1311 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
1312 | * @if_id: interface ID from &struct ieee80211_if_init_conf. | |
1313 | * @control: will be filled with information needed to send this beacon. | |
1314 | * | |
1315 | * If the beacon frames are generated by the host system (i.e., not in | |
1316 | * hardware/firmware), the low-level driver uses this function to receive | |
1317 | * the next beacon frame from the 802.11 code. The low-level is responsible | |
1318 | * for calling this function before beacon data is needed (e.g., based on | |
1319 | * hardware interrupt). Returned skb is used only once and low-level driver | |
1320 | * is responsible of freeing it. | |
1321 | */ | |
1322 | struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, | |
1323 | int if_id, | |
1324 | struct ieee80211_tx_control *control); | |
1325 | ||
1326 | /** | |
1327 | * ieee80211_rts_get - RTS frame generation function | |
1328 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
7e9ed188 | 1329 | * @if_id: interface ID from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1330 | * @frame: pointer to the frame that is going to be protected by the RTS. |
1331 | * @frame_len: the frame length (in octets). | |
1332 | * @frame_txctl: &struct ieee80211_tx_control of the frame. | |
1333 | * @rts: The buffer where to store the RTS frame. | |
1334 | * | |
1335 | * If the RTS frames are generated by the host system (i.e., not in | |
1336 | * hardware/firmware), the low-level driver uses this function to receive | |
1337 | * the next RTS frame from the 802.11 code. The low-level is responsible | |
1338 | * for calling this function before and RTS frame is needed. | |
1339 | */ | |
7e9ed188 | 1340 | void ieee80211_rts_get(struct ieee80211_hw *hw, int if_id, |
f0706e82 JB |
1341 | const void *frame, size_t frame_len, |
1342 | const struct ieee80211_tx_control *frame_txctl, | |
1343 | struct ieee80211_rts *rts); | |
1344 | ||
1345 | /** | |
1346 | * ieee80211_rts_duration - Get the duration field for an RTS frame | |
1347 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
7e9ed188 | 1348 | * @if_id: interface ID from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1349 | * @frame_len: the length of the frame that is going to be protected by the RTS. |
1350 | * @frame_txctl: &struct ieee80211_tx_control of the frame. | |
1351 | * | |
1352 | * If the RTS is generated in firmware, but the host system must provide | |
1353 | * the duration field, the low-level driver uses this function to receive | |
1354 | * the duration field value in little-endian byteorder. | |
1355 | */ | |
7e9ed188 | 1356 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, int if_id, |
f0706e82 JB |
1357 | size_t frame_len, |
1358 | const struct ieee80211_tx_control *frame_txctl); | |
1359 | ||
1360 | /** | |
1361 | * ieee80211_ctstoself_get - CTS-to-self frame generation function | |
1362 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
7e9ed188 | 1363 | * @if_id: interface ID from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1364 | * @frame: pointer to the frame that is going to be protected by the CTS-to-self. |
1365 | * @frame_len: the frame length (in octets). | |
1366 | * @frame_txctl: &struct ieee80211_tx_control of the frame. | |
1367 | * @cts: The buffer where to store the CTS-to-self frame. | |
1368 | * | |
1369 | * If the CTS-to-self frames are generated by the host system (i.e., not in | |
1370 | * hardware/firmware), the low-level driver uses this function to receive | |
1371 | * the next CTS-to-self frame from the 802.11 code. The low-level is responsible | |
1372 | * for calling this function before and CTS-to-self frame is needed. | |
1373 | */ | |
7e9ed188 | 1374 | void ieee80211_ctstoself_get(struct ieee80211_hw *hw, int if_id, |
f0706e82 JB |
1375 | const void *frame, size_t frame_len, |
1376 | const struct ieee80211_tx_control *frame_txctl, | |
1377 | struct ieee80211_cts *cts); | |
1378 | ||
1379 | /** | |
1380 | * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame | |
1381 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
7e9ed188 | 1382 | * @if_id: interface ID from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1383 | * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. |
1384 | * @frame_txctl: &struct ieee80211_tx_control of the frame. | |
1385 | * | |
1386 | * If the CTS-to-self is generated in firmware, but the host system must provide | |
1387 | * the duration field, the low-level driver uses this function to receive | |
1388 | * the duration field value in little-endian byteorder. | |
1389 | */ | |
7e9ed188 | 1390 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, int if_id, |
f0706e82 JB |
1391 | size_t frame_len, |
1392 | const struct ieee80211_tx_control *frame_txctl); | |
1393 | ||
1394 | /** | |
1395 | * ieee80211_generic_frame_duration - Calculate the duration field for a frame | |
1396 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
7e9ed188 | 1397 | * @if_id: interface ID from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1398 | * @frame_len: the length of the frame. |
1399 | * @rate: the rate (in 100kbps) at which the frame is going to be transmitted. | |
1400 | * | |
1401 | * Calculate the duration field of some generic frame, given its | |
1402 | * length and transmission rate (in 100kbps). | |
1403 | */ | |
7e9ed188 | 1404 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, int if_id, |
f0706e82 JB |
1405 | size_t frame_len, |
1406 | int rate); | |
1407 | ||
1408 | /** | |
1409 | * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames | |
1410 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1411 | * @if_id: interface ID from &struct ieee80211_if_init_conf. | |
1412 | * @control: will be filled with information needed to send returned frame. | |
1413 | * | |
1414 | * Function for accessing buffered broadcast and multicast frames. If | |
1415 | * hardware/firmware does not implement buffering of broadcast/multicast | |
1416 | * frames when power saving is used, 802.11 code buffers them in the host | |
1417 | * memory. The low-level driver uses this function to fetch next buffered | |
1418 | * frame. In most cases, this is used when generating beacon frame. This | |
1419 | * function returns a pointer to the next buffered skb or NULL if no more | |
1420 | * buffered frames are available. | |
1421 | * | |
1422 | * Note: buffered frames are returned only after DTIM beacon frame was | |
1423 | * generated with ieee80211_beacon_get() and the low-level driver must thus | |
1424 | * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns | |
1425 | * NULL if the previous generated beacon was not DTIM, so the low-level driver | |
1426 | * does not need to check for DTIM beacons separately and should be able to | |
1427 | * use common code for all beacons. | |
1428 | */ | |
1429 | struct sk_buff * | |
1430 | ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id, | |
1431 | struct ieee80211_tx_control *control); | |
1432 | ||
75a5f0cc JB |
1433 | /** |
1434 | * ieee80211_get_hdrlen_from_skb - get header length from data | |
1435 | * | |
1436 | * Given an skb with a raw 802.11 header at the data pointer this function | |
f0706e82 JB |
1437 | * returns the 802.11 header length in bytes (not including encryption |
1438 | * headers). If the data in the sk_buff is too short to contain a valid 802.11 | |
1439 | * header the function returns 0. | |
75a5f0cc JB |
1440 | * |
1441 | * @skb: the frame | |
f0706e82 JB |
1442 | */ |
1443 | int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); | |
1444 | ||
75a5f0cc JB |
1445 | /** |
1446 | * ieee80211_get_hdrlen - get header length from frame control | |
1447 | * | |
1448 | * This function returns the 802.11 header length in bytes (not including | |
1449 | * encryption headers.) | |
1450 | * | |
1451 | * @fc: the frame control field (in CPU endianness) | |
1452 | */ | |
f0706e82 JB |
1453 | int ieee80211_get_hdrlen(u16 fc); |
1454 | ||
1455 | /** | |
1456 | * ieee80211_wake_queue - wake specific queue | |
1457 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1458 | * @queue: queue number (counted from zero). | |
1459 | * | |
1460 | * Drivers should use this function instead of netif_wake_queue. | |
1461 | */ | |
1462 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); | |
1463 | ||
1464 | /** | |
1465 | * ieee80211_stop_queue - stop specific queue | |
1466 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1467 | * @queue: queue number (counted from zero). | |
1468 | * | |
1469 | * Drivers should use this function instead of netif_stop_queue. | |
1470 | */ | |
1471 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); | |
1472 | ||
1473 | /** | |
1474 | * ieee80211_start_queues - start all queues | |
1475 | * @hw: pointer to as obtained from ieee80211_alloc_hw(). | |
1476 | * | |
1477 | * Drivers should use this function instead of netif_start_queue. | |
1478 | */ | |
1479 | void ieee80211_start_queues(struct ieee80211_hw *hw); | |
1480 | ||
1481 | /** | |
1482 | * ieee80211_stop_queues - stop all queues | |
1483 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1484 | * | |
1485 | * Drivers should use this function instead of netif_stop_queue. | |
1486 | */ | |
1487 | void ieee80211_stop_queues(struct ieee80211_hw *hw); | |
1488 | ||
1489 | /** | |
1490 | * ieee80211_wake_queues - wake all queues | |
1491 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1492 | * | |
1493 | * Drivers should use this function instead of netif_wake_queue. | |
1494 | */ | |
1495 | void ieee80211_wake_queues(struct ieee80211_hw *hw); | |
1496 | ||
75a5f0cc JB |
1497 | /** |
1498 | * ieee80211_scan_completed - completed hardware scan | |
1499 | * | |
1500 | * When hardware scan offload is used (i.e. the hw_scan() callback is | |
1501 | * assigned) this function needs to be called by the driver to notify | |
1502 | * mac80211 that the scan finished. | |
1503 | * | |
1504 | * @hw: the hardware that finished the scan | |
1505 | */ | |
f0706e82 JB |
1506 | void ieee80211_scan_completed(struct ieee80211_hw *hw); |
1507 | ||
dabeb344 JB |
1508 | /** |
1509 | * ieee80211_iterate_active_interfaces - iterate active interfaces | |
1510 | * | |
1511 | * This function iterates over the interfaces associated with a given | |
1512 | * hardware that are currently active and calls the callback for them. | |
dabeb344 JB |
1513 | * |
1514 | * @hw: the hardware struct of which the interfaces should be iterated over | |
e38bad47 | 1515 | * @iterator: the iterator function to call, cannot sleep |
dabeb344 JB |
1516 | * @data: first argument of the iterator function |
1517 | */ | |
1518 | void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, | |
1519 | void (*iterator)(void *data, u8 *mac, | |
1520 | int if_id), | |
1521 | void *data); | |
1522 | ||
f0706e82 | 1523 | #endif /* MAC80211_H */ |