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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 | |
2485f710 JB |
41 | * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even |
42 | * tasklet function. | |
43 | * | |
44 | * NOTE: If the driver opts to use the _irqsafe() functions, it may not also | |
6ef307bc | 45 | * use the non-IRQ-safe functions! |
f0706e82 JB |
46 | */ |
47 | ||
75a5f0cc JB |
48 | /** |
49 | * DOC: Warning | |
50 | * | |
51 | * If you're reading this document and not the header file itself, it will | |
52 | * be incomplete because not all documentation has been converted yet. | |
53 | */ | |
54 | ||
55 | /** | |
56 | * DOC: Frame format | |
57 | * | |
58 | * As a general rule, when frames are passed between mac80211 and the driver, | |
59 | * they start with the IEEE 802.11 header and include the same octets that are | |
60 | * sent over the air except for the FCS which should be calculated by the | |
61 | * hardware. | |
62 | * | |
63 | * There are, however, various exceptions to this rule for advanced features: | |
64 | * | |
65 | * The first exception is for hardware encryption and decryption offload | |
66 | * where the IV/ICV may or may not be generated in hardware. | |
67 | * | |
68 | * Secondly, when the hardware handles fragmentation, the frame handed to | |
69 | * the driver from mac80211 is the MSDU, not the MPDU. | |
70 | * | |
71 | * Finally, for received frames, the driver is able to indicate that it has | |
72 | * filled a radiotap header and put that in front of the frame; if it does | |
73 | * not do so then mac80211 may add this under certain circumstances. | |
f0706e82 JB |
74 | */ |
75 | ||
84363e6e MA |
76 | /** |
77 | * enum ieee80211_notification_type - Low level driver notification | |
78 | * @IEEE80211_NOTIFY_RE_ASSOC: start the re-association sequence | |
79 | */ | |
80 | enum ieee80211_notification_types { | |
81 | IEEE80211_NOTIFY_RE_ASSOC, | |
82 | }; | |
83 | ||
10816d40 RR |
84 | /** |
85 | * struct ieee80211_ht_bss_info - describing BSS's HT characteristics | |
86 | * | |
87 | * This structure describes most essential parameters needed | |
6ef307bc | 88 | * to describe 802.11n HT characteristics in a BSS. |
10816d40 RR |
89 | * |
90 | * @primary_channel: channel number of primery channel | |
91 | * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width) | |
92 | * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection) | |
93 | */ | |
94 | struct ieee80211_ht_bss_info { | |
95 | u8 primary_channel; | |
96 | u8 bss_cap; /* use IEEE80211_HT_IE_CHA_ */ | |
97 | u8 bss_op_mode; /* use IEEE80211_HT_IE_ */ | |
98 | }; | |
99 | ||
e100bb64 JB |
100 | /** |
101 | * enum ieee80211_max_queues - maximum number of queues | |
102 | * | |
103 | * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. | |
104 | * @IEEE80211_MAX_AMPDU_QUEUES: Maximum number of queues usable | |
105 | * for A-MPDU operation. | |
106 | */ | |
107 | enum ieee80211_max_queues { | |
108 | IEEE80211_MAX_QUEUES = 16, | |
109 | IEEE80211_MAX_AMPDU_QUEUES = 16, | |
110 | }; | |
111 | ||
6b301cdf JB |
112 | /** |
113 | * struct ieee80211_tx_queue_params - transmit queue configuration | |
114 | * | |
115 | * The information provided in this structure is required for QoS | |
3330d7be | 116 | * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. |
6b301cdf | 117 | * |
f434b2d1 JB |
118 | * @aifs: arbitration interface space [0..255] |
119 | * @cw_min: minimum contention window [a value of the form | |
120 | * 2^n-1 in the range 1..32767] | |
6b301cdf | 121 | * @cw_max: maximum contention window [like @cw_min] |
3330d7be | 122 | * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled |
6b301cdf | 123 | */ |
f0706e82 | 124 | struct ieee80211_tx_queue_params { |
f434b2d1 | 125 | u16 txop; |
3330d7be JB |
126 | u16 cw_min; |
127 | u16 cw_max; | |
f434b2d1 | 128 | u8 aifs; |
f0706e82 JB |
129 | }; |
130 | ||
6b301cdf | 131 | /** |
57ffc589 | 132 | * struct ieee80211_tx_queue_stats - transmit queue statistics |
6b301cdf JB |
133 | * |
134 | * @len: number of packets in queue | |
135 | * @limit: queue length limit | |
136 | * @count: number of frames sent | |
137 | */ | |
57ffc589 | 138 | struct ieee80211_tx_queue_stats { |
6b301cdf JB |
139 | unsigned int len; |
140 | unsigned int limit; | |
141 | unsigned int count; | |
f0706e82 JB |
142 | }; |
143 | ||
f0706e82 JB |
144 | struct ieee80211_low_level_stats { |
145 | unsigned int dot11ACKFailureCount; | |
146 | unsigned int dot11RTSFailureCount; | |
147 | unsigned int dot11FCSErrorCount; | |
148 | unsigned int dot11RTSSuccessCount; | |
149 | }; | |
150 | ||
471b3efd JB |
151 | /** |
152 | * enum ieee80211_bss_change - BSS change notification flags | |
153 | * | |
154 | * These flags are used with the bss_info_changed() callback | |
155 | * to indicate which BSS parameter changed. | |
156 | * | |
157 | * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), | |
158 | * also implies a change in the AID. | |
159 | * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed | |
160 | * @BSS_CHANGED_ERP_PREAMBLE: preamble changed | |
9f1ba906 | 161 | * @BSS_CHANGED_ERP_SLOT: slot timing changed |
38668c05 | 162 | * @BSS_CHANGED_HT: 802.11n parameters changed |
96dd22ac | 163 | * @BSS_CHANGED_BASIC_RATES: Basic rateset changed |
471b3efd JB |
164 | */ |
165 | enum ieee80211_bss_change { | |
166 | BSS_CHANGED_ASSOC = 1<<0, | |
167 | BSS_CHANGED_ERP_CTS_PROT = 1<<1, | |
168 | BSS_CHANGED_ERP_PREAMBLE = 1<<2, | |
9f1ba906 | 169 | BSS_CHANGED_ERP_SLOT = 1<<3, |
38668c05 | 170 | BSS_CHANGED_HT = 1<<4, |
96dd22ac | 171 | BSS_CHANGED_BASIC_RATES = 1<<5, |
471b3efd JB |
172 | }; |
173 | ||
174 | /** | |
175 | * struct ieee80211_bss_conf - holds the BSS's changing parameters | |
176 | * | |
177 | * This structure keeps information about a BSS (and an association | |
178 | * to that BSS) that can change during the lifetime of the BSS. | |
179 | * | |
180 | * @assoc: association status | |
181 | * @aid: association ID number, valid only when @assoc is true | |
182 | * @use_cts_prot: use CTS protection | |
183 | * @use_short_preamble: use 802.11b short preamble | |
9f1ba906 | 184 | * @use_short_slot: use short slot time (only relevant for ERP) |
98f7dfd8 | 185 | * @dtim_period: num of beacons before the next DTIM, for PSM |
21c0cbe7 TW |
186 | * @timestamp: beacon timestamp |
187 | * @beacon_int: beacon interval | |
98f7dfd8 | 188 | * @assoc_capability: capabilities taken from assoc resp |
38668c05 TW |
189 | * @assoc_ht: association in HT mode |
190 | * @ht_conf: ht capabilities | |
191 | * @ht_bss_conf: ht extended capabilities | |
96dd22ac JB |
192 | * @basic_rates: bitmap of basic rates, each bit stands for an |
193 | * index into the rate table configured by the driver in | |
194 | * the current band. | |
471b3efd JB |
195 | */ |
196 | struct ieee80211_bss_conf { | |
197 | /* association related data */ | |
198 | bool assoc; | |
199 | u16 aid; | |
200 | /* erp related data */ | |
201 | bool use_cts_prot; | |
202 | bool use_short_preamble; | |
9f1ba906 | 203 | bool use_short_slot; |
98f7dfd8 | 204 | u8 dtim_period; |
21c0cbe7 TW |
205 | u16 beacon_int; |
206 | u16 assoc_capability; | |
207 | u64 timestamp; | |
96dd22ac | 208 | u64 basic_rates; |
38668c05 TW |
209 | /* ht related data */ |
210 | bool assoc_ht; | |
211 | struct ieee80211_ht_info *ht_conf; | |
212 | struct ieee80211_ht_bss_info *ht_bss_conf; | |
471b3efd JB |
213 | }; |
214 | ||
11f4b1ce | 215 | /** |
6ef307bc | 216 | * enum mac80211_tx_control_flags - flags to describe transmission information/status |
e039fa4a | 217 | * |
6ef307bc | 218 | * These flags are used with the @flags member of &ieee80211_tx_info. |
e039fa4a JB |
219 | * |
220 | * @IEEE80211_TX_CTL_REQ_TX_STATUS: request TX status callback for this frame. | |
e039fa4a JB |
221 | * @IEEE80211_TX_CTL_USE_RTS_CTS: use RTS-CTS before sending frame |
222 | * @IEEE80211_TX_CTL_USE_CTS_PROTECT: use CTS protection for the frame (e.g., | |
223 | * for combined 802.11g / 802.11b networks) | |
224 | * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack | |
6ef307bc | 225 | * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: TBD |
e039fa4a JB |
226 | * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination |
227 | * station | |
6ef307bc | 228 | * @IEEE80211_TX_CTL_REQUEUE: TBD |
e039fa4a | 229 | * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame |
6ef307bc | 230 | * @IEEE80211_TX_CTL_SHORT_PREAMBLE: TBD |
e039fa4a JB |
231 | * @IEEE80211_TX_CTL_LONG_RETRY_LIMIT: this frame should be send using the |
232 | * through set_retry_limit configured long retry value | |
e039fa4a JB |
233 | * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon |
234 | * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU | |
235 | * @IEEE80211_TX_CTL_OFDM_HT: this frame can be sent in HT OFDM rates. number | |
236 | * of streams when this flag is on can be extracted from antenna_sel_tx, | |
237 | * so if 1 antenna is marked use SISO, 2 antennas marked use MIMO, n | |
238 | * antennas marked use MIMO_n. | |
239 | * @IEEE80211_TX_CTL_GREEN_FIELD: use green field protection for this frame | |
240 | * @IEEE80211_TX_CTL_40_MHZ_WIDTH: send this frame using 40 Mhz channel width | |
241 | * @IEEE80211_TX_CTL_DUP_DATA: duplicate data frame on both 20 Mhz channels | |
242 | * @IEEE80211_TX_CTL_SHORT_GI: send this frame using short guard interval | |
6ef307bc | 243 | * @IEEE80211_TX_CTL_INJECTED: TBD |
e039fa4a JB |
244 | * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted |
245 | * because the destination STA was in powersave mode. | |
246 | * @IEEE80211_TX_STAT_ACK: Frame was acknowledged | |
247 | * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status | |
248 | * is for the whole aggregation. | |
429a3805 RR |
249 | * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, |
250 | * so consider using block ack request (BAR). | |
f591fa5d JB |
251 | * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence |
252 | * number to this frame, taking care of not overwriting the fragment | |
253 | * number and increasing the sequence number only when the | |
254 | * IEEE80211_TX_CTL_FIRST_FRAGMENT flags is set. mac80211 will properly | |
255 | * assign sequence numbers to QoS-data frames but cannot do so correctly | |
256 | * for non-QoS-data and management frames because beacons need them from | |
257 | * that counter as well and mac80211 cannot guarantee proper sequencing. | |
258 | * If this flag is set, the driver should instruct the hardware to | |
259 | * assign a sequence number to the frame or assign one itself. Cf. IEEE | |
260 | * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for | |
261 | * beacons always be clear for frames without a sequence number field. | |
11f4b1ce RR |
262 | */ |
263 | enum mac80211_tx_control_flags { | |
e039fa4a | 264 | IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), |
e039fa4a JB |
265 | IEEE80211_TX_CTL_USE_RTS_CTS = BIT(2), |
266 | IEEE80211_TX_CTL_USE_CTS_PROTECT = BIT(3), | |
267 | IEEE80211_TX_CTL_NO_ACK = BIT(4), | |
268 | IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(5), | |
269 | IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(6), | |
270 | IEEE80211_TX_CTL_REQUEUE = BIT(7), | |
271 | IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(8), | |
272 | IEEE80211_TX_CTL_SHORT_PREAMBLE = BIT(9), | |
273 | IEEE80211_TX_CTL_LONG_RETRY_LIMIT = BIT(10), | |
e039fa4a JB |
274 | IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(12), |
275 | IEEE80211_TX_CTL_AMPDU = BIT(13), | |
276 | IEEE80211_TX_CTL_OFDM_HT = BIT(14), | |
277 | IEEE80211_TX_CTL_GREEN_FIELD = BIT(15), | |
278 | IEEE80211_TX_CTL_40_MHZ_WIDTH = BIT(16), | |
279 | IEEE80211_TX_CTL_DUP_DATA = BIT(17), | |
280 | IEEE80211_TX_CTL_SHORT_GI = BIT(18), | |
281 | IEEE80211_TX_CTL_INJECTED = BIT(19), | |
282 | IEEE80211_TX_STAT_TX_FILTERED = BIT(20), | |
283 | IEEE80211_TX_STAT_ACK = BIT(21), | |
284 | IEEE80211_TX_STAT_AMPDU = BIT(22), | |
429a3805 | 285 | IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(23), |
f591fa5d | 286 | IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(24), |
11f4b1ce RR |
287 | }; |
288 | ||
8318d78a | 289 | |
e039fa4a JB |
290 | #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE \ |
291 | (sizeof(((struct sk_buff *)0)->cb) - 8) | |
292 | #define IEEE80211_TX_INFO_DRIVER_DATA_PTRS \ | |
293 | (IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)) | |
1c014420 | 294 | |
e039fa4a JB |
295 | /** |
296 | * struct ieee80211_tx_info - skb transmit information | |
297 | * | |
298 | * This structure is placed in skb->cb for three uses: | |
299 | * (1) mac80211 TX control - mac80211 tells the driver what to do | |
300 | * (2) driver internal use (if applicable) | |
301 | * (3) TX status information - driver tells mac80211 what happened | |
302 | * | |
17741cdc JB |
303 | * The TX control's sta pointer is only valid during the ->tx call, |
304 | * it may be NULL. | |
305 | * | |
e039fa4a | 306 | * @flags: transmit info flags, defined above |
6ef307bc RD |
307 | * @band: TBD |
308 | * @tx_rate_idx: TBD | |
309 | * @antenna_sel_tx: TBD | |
310 | * @control: union for control data | |
311 | * @status: union for status data | |
312 | * @driver_data: array of driver_data pointers | |
e039fa4a JB |
313 | * @retry_count: number of retries |
314 | * @excessive_retries: set to 1 if the frame was retried many times | |
315 | * but not acknowledged | |
316 | * @ampdu_ack_len: number of aggregated frames. | |
317 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. | |
318 | * @ampdu_ack_map: block ack bit map for the aggregation. | |
319 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. | |
320 | * @ack_signal: signal strength of the ACK frame | |
1c014420 | 321 | */ |
e039fa4a JB |
322 | struct ieee80211_tx_info { |
323 | /* common information */ | |
324 | u32 flags; | |
325 | u8 band; | |
326 | s8 tx_rate_idx; | |
327 | u8 antenna_sel_tx; | |
2e92e6f2 | 328 | |
e2530083 | 329 | /* 1 byte hole */ |
e039fa4a JB |
330 | |
331 | union { | |
332 | struct { | |
25d834e1 | 333 | /* NB: vif can be NULL for injected frames */ |
e039fa4a JB |
334 | struct ieee80211_vif *vif; |
335 | struct ieee80211_key_conf *hw_key; | |
17741cdc | 336 | struct ieee80211_sta *sta; |
e039fa4a | 337 | unsigned long jiffies; |
e039fa4a JB |
338 | s8 rts_cts_rate_idx, alt_retry_rate_idx; |
339 | u8 retry_limit; | |
e039fa4a JB |
340 | } control; |
341 | struct { | |
342 | u64 ampdu_ack_map; | |
343 | int ack_signal; | |
344 | u8 retry_count; | |
345 | bool excessive_retries; | |
346 | u8 ampdu_ack_len; | |
347 | } status; | |
348 | void *driver_data[IEEE80211_TX_INFO_DRIVER_DATA_PTRS]; | |
349 | }; | |
f0706e82 JB |
350 | }; |
351 | ||
e039fa4a JB |
352 | static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) |
353 | { | |
354 | return (struct ieee80211_tx_info *)skb->cb; | |
355 | } | |
7ac1bd6a | 356 | |
7ac1bd6a JB |
357 | |
358 | /** | |
359 | * enum mac80211_rx_flags - receive flags | |
360 | * | |
361 | * These flags are used with the @flag member of &struct ieee80211_rx_status. | |
362 | * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. | |
363 | * Use together with %RX_FLAG_MMIC_STRIPPED. | |
364 | * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. | |
365 | * @RX_FLAG_RADIOTAP: This frame starts with a radiotap header. | |
366 | * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, | |
367 | * verification has been done by the hardware. | |
368 | * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. | |
369 | * If this flag is set, the stack cannot do any replay detection | |
370 | * hence the driver or hardware will have to do that. | |
72abd81b JB |
371 | * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on |
372 | * the frame. | |
373 | * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on | |
374 | * the frame. | |
c49e5ea3 | 375 | * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) |
9d9bf77d BR |
376 | * is valid. This is useful in monitor mode and necessary for beacon frames |
377 | * to enable IBSS merging. | |
b4f28bbb | 378 | * @RX_FLAG_SHORTPRE: Short preamble was used for this frame |
7ac1bd6a JB |
379 | */ |
380 | enum mac80211_rx_flags { | |
381 | RX_FLAG_MMIC_ERROR = 1<<0, | |
382 | RX_FLAG_DECRYPTED = 1<<1, | |
383 | RX_FLAG_RADIOTAP = 1<<2, | |
384 | RX_FLAG_MMIC_STRIPPED = 1<<3, | |
385 | RX_FLAG_IV_STRIPPED = 1<<4, | |
72abd81b JB |
386 | RX_FLAG_FAILED_FCS_CRC = 1<<5, |
387 | RX_FLAG_FAILED_PLCP_CRC = 1<<6, | |
c49e5ea3 | 388 | RX_FLAG_TSFT = 1<<7, |
b4f28bbb | 389 | RX_FLAG_SHORTPRE = 1<<8 |
7ac1bd6a JB |
390 | }; |
391 | ||
392 | /** | |
393 | * struct ieee80211_rx_status - receive status | |
394 | * | |
395 | * The low-level driver should provide this information (the subset | |
396 | * supported by hardware) to the 802.11 code with each received | |
397 | * frame. | |
566bfe5a | 398 | * |
c132bec3 BR |
399 | * @mactime: value in microseconds of the 64-bit Time Synchronization Function |
400 | * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. | |
8318d78a | 401 | * @band: the active band when this frame was received |
7ac1bd6a | 402 | * @freq: frequency the radio was tuned to when receiving this frame, in MHz |
566bfe5a BR |
403 | * @signal: signal strength when receiving this frame, either in dBm, in dB or |
404 | * unspecified depending on the hardware capabilities flags | |
405 | * @IEEE80211_HW_SIGNAL_* | |
406 | * @noise: noise when receiving this frame, in dBm. | |
407 | * @qual: overall signal quality indication, in percent (0-100). | |
7ac1bd6a | 408 | * @antenna: antenna used |
8318d78a | 409 | * @rate_idx: index of data rate into band's supported rates |
7ac1bd6a JB |
410 | * @flag: %RX_FLAG_* |
411 | */ | |
f0706e82 JB |
412 | struct ieee80211_rx_status { |
413 | u64 mactime; | |
8318d78a | 414 | enum ieee80211_band band; |
7ac1bd6a | 415 | int freq; |
7ac1bd6a | 416 | int signal; |
f0706e82 | 417 | int noise; |
566bfe5a | 418 | int qual; |
f0706e82 | 419 | int antenna; |
8318d78a | 420 | int rate_idx; |
f0706e82 JB |
421 | int flag; |
422 | }; | |
423 | ||
6b301cdf JB |
424 | /** |
425 | * enum ieee80211_conf_flags - configuration flags | |
426 | * | |
427 | * Flags to define PHY configuration options | |
428 | * | |
429 | * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time | |
430 | * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported) | |
10816d40 | 431 | * @IEEE80211_CONF_SUPPORT_HT_MODE: use 802.11n HT capabilities (if supported) |
49292d56 | 432 | * @IEEE80211_CONF_PS: Enable 802.11 power save mode |
6b301cdf JB |
433 | */ |
434 | enum ieee80211_conf_flags { | |
9f1ba906 JM |
435 | /* |
436 | * TODO: IEEE80211_CONF_SHORT_SLOT_TIME will be removed once drivers | |
437 | * have been converted to use bss_info_changed() for slot time | |
438 | * configuration | |
439 | */ | |
10816d40 RR |
440 | IEEE80211_CONF_SHORT_SLOT_TIME = (1<<0), |
441 | IEEE80211_CONF_RADIOTAP = (1<<1), | |
442 | IEEE80211_CONF_SUPPORT_HT_MODE = (1<<2), | |
49292d56 | 443 | IEEE80211_CONF_PS = (1<<3), |
6b301cdf | 444 | }; |
f0706e82 JB |
445 | |
446 | /** | |
447 | * struct ieee80211_conf - configuration of the device | |
448 | * | |
449 | * This struct indicates how the driver shall configure the hardware. | |
450 | * | |
451 | * @radio_enabled: when zero, driver is required to switch off the radio. | |
6b301cdf | 452 | * TODO make a flag |
6b301cdf | 453 | * @beacon_int: beacon interval (TODO make interface config) |
ea95bba4 | 454 | * @listen_interval: listen interval in units of beacon interval |
6b301cdf | 455 | * @flags: configuration flags defined above |
8318d78a JB |
456 | * @power_level: requested transmit power (in dBm) |
457 | * @max_antenna_gain: maximum antenna gain (in dBi) | |
6b301cdf JB |
458 | * @antenna_sel_tx: transmit antenna selection, 0: default/diversity, |
459 | * 1/2: antenna 0/1 | |
460 | * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx | |
10816d40 RR |
461 | * @ht_conf: describes current self configuration of 802.11n HT capabilies |
462 | * @ht_bss_conf: describes current BSS configuration of 802.11n HT parameters | |
8318d78a | 463 | * @channel: the channel to tune to |
f0706e82 JB |
464 | */ |
465 | struct ieee80211_conf { | |
f0706e82 JB |
466 | int radio_enabled; |
467 | ||
468 | int beacon_int; | |
ea95bba4 | 469 | u16 listen_interval; |
6b301cdf | 470 | u32 flags; |
8318d78a JB |
471 | int power_level; |
472 | int max_antenna_gain; | |
f0706e82 JB |
473 | u8 antenna_sel_tx; |
474 | u8 antenna_sel_rx; | |
10816d40 | 475 | |
8318d78a JB |
476 | struct ieee80211_channel *channel; |
477 | ||
10816d40 RR |
478 | struct ieee80211_ht_info ht_conf; |
479 | struct ieee80211_ht_bss_info ht_bss_conf; | |
f0706e82 JB |
480 | }; |
481 | ||
32bfd35d JB |
482 | /** |
483 | * struct ieee80211_vif - per-interface data | |
484 | * | |
485 | * Data in this structure is continually present for driver | |
486 | * use during the life of a virtual interface. | |
487 | * | |
51fb61e7 | 488 | * @type: type of this virtual interface |
32bfd35d JB |
489 | * @drv_priv: data area for driver use, will always be aligned to |
490 | * sizeof(void *). | |
491 | */ | |
492 | struct ieee80211_vif { | |
05c914fe | 493 | enum nl80211_iftype type; |
32bfd35d JB |
494 | /* must be last */ |
495 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); | |
496 | }; | |
497 | ||
902acc78 JB |
498 | static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) |
499 | { | |
500 | #ifdef CONFIG_MAC80211_MESH | |
05c914fe | 501 | return vif->type == NL80211_IFTYPE_MESH_POINT; |
902acc78 JB |
502 | #endif |
503 | return false; | |
504 | } | |
505 | ||
f0706e82 JB |
506 | /** |
507 | * struct ieee80211_if_init_conf - initial configuration of an interface | |
508 | * | |
32bfd35d JB |
509 | * @vif: pointer to a driver-use per-interface structure. The pointer |
510 | * itself is also used for various functions including | |
511 | * ieee80211_beacon_get() and ieee80211_get_buffered_bc(). | |
05c914fe | 512 | * @type: one of &enum nl80211_iftype constants. Determines the type of |
f0706e82 JB |
513 | * added/removed interface. |
514 | * @mac_addr: pointer to MAC address of the interface. This pointer is valid | |
515 | * until the interface is removed (i.e. it cannot be used after | |
516 | * remove_interface() callback was called for this interface). | |
517 | * | |
518 | * This structure is used in add_interface() and remove_interface() | |
519 | * callbacks of &struct ieee80211_hw. | |
4480f15c JB |
520 | * |
521 | * When you allow multiple interfaces to be added to your PHY, take care | |
522 | * that the hardware can actually handle multiple MAC addresses. However, | |
523 | * also take care that when there's no interface left with mac_addr != %NULL | |
524 | * you remove the MAC address from the device to avoid acknowledging packets | |
525 | * in pure monitor mode. | |
f0706e82 JB |
526 | */ |
527 | struct ieee80211_if_init_conf { | |
05c914fe | 528 | enum nl80211_iftype type; |
32bfd35d | 529 | struct ieee80211_vif *vif; |
f0706e82 JB |
530 | void *mac_addr; |
531 | }; | |
532 | ||
9d139c81 JB |
533 | /** |
534 | * enum ieee80211_if_conf_change - interface config change flags | |
535 | * | |
536 | * @IEEE80211_IFCC_BSSID: The BSSID changed. | |
537 | * @IEEE80211_IFCC_SSID: The SSID changed. | |
538 | * @IEEE80211_IFCC_BEACON: The beacon for this interface changed | |
539 | * (currently AP and MESH only), use ieee80211_beacon_get(). | |
540 | */ | |
541 | enum ieee80211_if_conf_change { | |
542 | IEEE80211_IFCC_BSSID = BIT(0), | |
543 | IEEE80211_IFCC_SSID = BIT(1), | |
544 | IEEE80211_IFCC_BEACON = BIT(2), | |
545 | }; | |
546 | ||
f0706e82 JB |
547 | /** |
548 | * struct ieee80211_if_conf - configuration of an interface | |
549 | * | |
9d139c81 | 550 | * @changed: parameters that have changed, see &enum ieee80211_if_conf_change. |
f0706e82 JB |
551 | * @bssid: BSSID of the network we are associated to/creating. |
552 | * @ssid: used (together with @ssid_len) by drivers for hardware that | |
553 | * generate beacons independently. The pointer is valid only during the | |
554 | * config_interface() call, so copy the value somewhere if you need | |
555 | * it. | |
556 | * @ssid_len: length of the @ssid field. | |
f0706e82 JB |
557 | * |
558 | * This structure is passed to the config_interface() callback of | |
559 | * &struct ieee80211_hw. | |
560 | */ | |
561 | struct ieee80211_if_conf { | |
9d139c81 | 562 | u32 changed; |
f0706e82 JB |
563 | u8 *bssid; |
564 | u8 *ssid; | |
565 | size_t ssid_len; | |
f0706e82 JB |
566 | }; |
567 | ||
7ac1bd6a JB |
568 | /** |
569 | * enum ieee80211_key_alg - key algorithm | |
7ac1bd6a JB |
570 | * @ALG_WEP: WEP40 or WEP104 |
571 | * @ALG_TKIP: TKIP | |
572 | * @ALG_CCMP: CCMP (AES) | |
573 | */ | |
ea49c359 | 574 | enum ieee80211_key_alg { |
8f20fc24 JB |
575 | ALG_WEP, |
576 | ALG_TKIP, | |
577 | ALG_CCMP, | |
ea49c359 | 578 | }; |
f0706e82 | 579 | |
23976efe EG |
580 | /** |
581 | * enum ieee80211_key_len - key length | |
6ef307bc RD |
582 | * @LEN_WEP40: WEP 5-byte long key |
583 | * @LEN_WEP104: WEP 13-byte long key | |
23976efe EG |
584 | */ |
585 | enum ieee80211_key_len { | |
586 | LEN_WEP40 = 5, | |
587 | LEN_WEP104 = 13, | |
588 | }; | |
7ac1bd6a JB |
589 | |
590 | /** | |
591 | * enum ieee80211_key_flags - key flags | |
592 | * | |
593 | * These flags are used for communication about keys between the driver | |
594 | * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. | |
595 | * | |
596 | * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates | |
597 | * that the STA this key will be used with could be using QoS. | |
598 | * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the | |
599 | * driver to indicate that it requires IV generation for this | |
600 | * particular key. | |
601 | * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by | |
602 | * the driver for a TKIP key if it requires Michael MIC | |
603 | * generation in software. | |
c6adbd21 ID |
604 | * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates |
605 | * that the key is pairwise rather then a shared key. | |
7848ba7d | 606 | */ |
7ac1bd6a JB |
607 | enum ieee80211_key_flags { |
608 | IEEE80211_KEY_FLAG_WMM_STA = 1<<0, | |
609 | IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, | |
610 | IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, | |
c6adbd21 | 611 | IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, |
7ac1bd6a | 612 | }; |
11a843b7 | 613 | |
7ac1bd6a JB |
614 | /** |
615 | * struct ieee80211_key_conf - key information | |
616 | * | |
617 | * This key information is given by mac80211 to the driver by | |
618 | * the set_key() callback in &struct ieee80211_ops. | |
619 | * | |
620 | * @hw_key_idx: To be set by the driver, this is the key index the driver | |
621 | * wants to be given when a frame is transmitted and needs to be | |
6a7664d4 | 622 | * encrypted in hardware. |
7ac1bd6a JB |
623 | * @alg: The key algorithm. |
624 | * @flags: key flags, see &enum ieee80211_key_flags. | |
625 | * @keyidx: the key index (0-3) | |
626 | * @keylen: key material length | |
ffd7891d LR |
627 | * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) |
628 | * data block: | |
629 | * - Temporal Encryption Key (128 bits) | |
630 | * - Temporal Authenticator Tx MIC Key (64 bits) | |
631 | * - Temporal Authenticator Rx MIC Key (64 bits) | |
632 | * | |
7ac1bd6a | 633 | */ |
f0706e82 | 634 | struct ieee80211_key_conf { |
ea49c359 | 635 | enum ieee80211_key_alg alg; |
76708dee FF |
636 | u8 icv_len; |
637 | u8 iv_len; | |
6a7664d4 | 638 | u8 hw_key_idx; |
11a843b7 | 639 | u8 flags; |
11a843b7 | 640 | s8 keyidx; |
11a843b7 | 641 | u8 keylen; |
f0706e82 JB |
642 | u8 key[0]; |
643 | }; | |
644 | ||
7ac1bd6a JB |
645 | /** |
646 | * enum set_key_cmd - key command | |
647 | * | |
648 | * Used with the set_key() callback in &struct ieee80211_ops, this | |
649 | * indicates whether a key is being removed or added. | |
650 | * | |
651 | * @SET_KEY: a key is set | |
652 | * @DISABLE_KEY: a key must be disabled | |
653 | */ | |
ea49c359 | 654 | enum set_key_cmd { |
11a843b7 | 655 | SET_KEY, DISABLE_KEY, |
ea49c359 | 656 | }; |
f0706e82 | 657 | |
17741cdc JB |
658 | /** |
659 | * struct ieee80211_sta - station table entry | |
660 | * | |
661 | * A station table entry represents a station we are possibly | |
662 | * communicating with. Since stations are RCU-managed in | |
663 | * mac80211, any ieee80211_sta pointer you get access to must | |
664 | * either be protected by rcu_read_lock() explicitly or implicitly, | |
665 | * or you must take good care to not use such a pointer after a | |
666 | * call to your sta_notify callback that removed it. | |
667 | * | |
668 | * @addr: MAC address | |
669 | * @aid: AID we assigned to the station if we're an AP | |
323ce79a | 670 | * @supp_rates: Bitmap of supported rates (per band) |
687c7c08 | 671 | * @ht_info: HT capabilities of this STA |
17741cdc JB |
672 | * @drv_priv: data area for driver use, will always be aligned to |
673 | * sizeof(void *), size is determined in hw information. | |
674 | */ | |
675 | struct ieee80211_sta { | |
323ce79a | 676 | u64 supp_rates[IEEE80211_NUM_BANDS]; |
17741cdc JB |
677 | u8 addr[ETH_ALEN]; |
678 | u16 aid; | |
687c7c08 | 679 | struct ieee80211_ht_info ht_info; |
17741cdc JB |
680 | |
681 | /* must be last */ | |
682 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); | |
683 | }; | |
684 | ||
478f8d2b TW |
685 | /** |
686 | * enum sta_notify_cmd - sta notify command | |
687 | * | |
688 | * Used with the sta_notify() callback in &struct ieee80211_ops, this | |
6ef307bc | 689 | * indicates addition and removal of a station to station table. |
478f8d2b TW |
690 | * |
691 | * @STA_NOTIFY_ADD: a station was added to the station table | |
692 | * @STA_NOTIFY_REMOVE: a station being removed from the station table | |
693 | */ | |
694 | enum sta_notify_cmd { | |
695 | STA_NOTIFY_ADD, STA_NOTIFY_REMOVE | |
696 | }; | |
1bc0826c | 697 | |
5d2cdcd4 EG |
698 | /** |
699 | * enum ieee80211_tkip_key_type - get tkip key | |
700 | * | |
701 | * Used by drivers which need to get a tkip key for skb. Some drivers need a | |
702 | * phase 1 key, others need a phase 2 key. A single function allows the driver | |
703 | * to get the key, this enum indicates what type of key is required. | |
704 | * | |
705 | * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key | |
706 | * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key | |
707 | */ | |
708 | enum ieee80211_tkip_key_type { | |
709 | IEEE80211_TKIP_P1_KEY, | |
710 | IEEE80211_TKIP_P2_KEY, | |
711 | }; | |
712 | ||
1bc0826c JB |
713 | /** |
714 | * enum ieee80211_hw_flags - hardware flags | |
715 | * | |
716 | * These flags are used to indicate hardware capabilities to | |
717 | * the stack. Generally, flags here should have their meaning | |
718 | * done in a way that the simplest hardware doesn't need setting | |
719 | * any particular flags. There are some exceptions to this rule, | |
720 | * however, so you are advised to review these flags carefully. | |
721 | * | |
1bc0826c JB |
722 | * @IEEE80211_HW_RX_INCLUDES_FCS: |
723 | * Indicates that received frames passed to the stack include | |
724 | * the FCS at the end. | |
725 | * | |
726 | * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: | |
727 | * Some wireless LAN chipsets buffer broadcast/multicast frames | |
728 | * for power saving stations in the hardware/firmware and others | |
729 | * rely on the host system for such buffering. This option is used | |
730 | * to configure the IEEE 802.11 upper layer to buffer broadcast and | |
731 | * multicast frames when there are power saving stations so that | |
546c80c9 | 732 | * the driver can fetch them with ieee80211_get_buffered_bc(). |
1bc0826c | 733 | * |
8318d78a JB |
734 | * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: |
735 | * Hardware is not capable of short slot operation on the 2.4 GHz band. | |
736 | * | |
737 | * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: | |
738 | * Hardware is not capable of receiving frames with short preamble on | |
739 | * the 2.4 GHz band. | |
566bfe5a BR |
740 | * |
741 | * @IEEE80211_HW_SIGNAL_UNSPEC: | |
742 | * Hardware can provide signal values but we don't know its units. We | |
743 | * expect values between 0 and @max_signal. | |
744 | * If possible please provide dB or dBm instead. | |
745 | * | |
746 | * @IEEE80211_HW_SIGNAL_DB: | |
747 | * Hardware gives signal values in dB, decibel difference from an | |
748 | * arbitrary, fixed reference. We expect values between 0 and @max_signal. | |
749 | * If possible please provide dBm instead. | |
750 | * | |
751 | * @IEEE80211_HW_SIGNAL_DBM: | |
752 | * Hardware gives signal values in dBm, decibel difference from | |
753 | * one milliwatt. This is the preferred method since it is standardized | |
754 | * between different devices. @max_signal does not need to be set. | |
755 | * | |
756 | * @IEEE80211_HW_NOISE_DBM: | |
757 | * Hardware can provide noise (radio interference) values in units dBm, | |
758 | * decibel difference from one milliwatt. | |
06ff47bc TW |
759 | * |
760 | * @IEEE80211_HW_SPECTRUM_MGMT: | |
761 | * Hardware supports spectrum management defined in 802.11h | |
762 | * Measurement, Channel Switch, Quieting, TPC | |
1bc0826c JB |
763 | */ |
764 | enum ieee80211_hw_flags { | |
1bc0826c JB |
765 | IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, |
766 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, | |
8318d78a JB |
767 | IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, |
768 | IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, | |
566bfe5a BR |
769 | IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, |
770 | IEEE80211_HW_SIGNAL_DB = 1<<6, | |
771 | IEEE80211_HW_SIGNAL_DBM = 1<<7, | |
772 | IEEE80211_HW_NOISE_DBM = 1<<8, | |
06ff47bc | 773 | IEEE80211_HW_SPECTRUM_MGMT = 1<<9, |
1bc0826c JB |
774 | }; |
775 | ||
7ac1bd6a JB |
776 | /** |
777 | * struct ieee80211_hw - hardware information and state | |
75a5f0cc JB |
778 | * |
779 | * This structure contains the configuration and hardware | |
780 | * information for an 802.11 PHY. | |
781 | * | |
782 | * @wiphy: This points to the &struct wiphy allocated for this | |
783 | * 802.11 PHY. You must fill in the @perm_addr and @dev | |
784 | * members of this structure using SET_IEEE80211_DEV() | |
8318d78a JB |
785 | * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported |
786 | * bands (with channels, bitrates) are registered here. | |
75a5f0cc JB |
787 | * |
788 | * @conf: &struct ieee80211_conf, device configuration, don't use. | |
789 | * | |
790 | * @workqueue: single threaded workqueue available for driver use, | |
428da765 ID |
791 | * allocated by mac80211 on registration and flushed when an |
792 | * interface is removed. | |
793 | * NOTICE: All work performed on this workqueue should NEVER | |
794 | * acquire the RTNL lock (i.e. Don't use the function | |
795 | * ieee80211_iterate_active_interfaces()) | |
75a5f0cc JB |
796 | * |
797 | * @priv: pointer to private area that was allocated for driver use | |
798 | * along with this structure. | |
799 | * | |
800 | * @flags: hardware flags, see &enum ieee80211_hw_flags. | |
801 | * | |
802 | * @extra_tx_headroom: headroom to reserve in each transmit skb | |
803 | * for use by the driver (e.g. for transmit headers.) | |
804 | * | |
805 | * @channel_change_time: time (in microseconds) it takes to change channels. | |
806 | * | |
566bfe5a BR |
807 | * @max_signal: Maximum value for signal (rssi) in RX information, used |
808 | * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB | |
75a5f0cc | 809 | * |
ea95bba4 TW |
810 | * @max_listen_interval: max listen interval in units of beacon interval |
811 | * that HW supports | |
812 | * | |
75a5f0cc | 813 | * @queues: number of available hardware transmit queues for |
e100bb64 JB |
814 | * data packets. WMM/QoS requires at least four, these |
815 | * queues need to have configurable access parameters. | |
816 | * | |
817 | * @ampdu_queues: number of available hardware transmit queues | |
818 | * for A-MPDU packets, these have no access parameters | |
819 | * because they're used only for A-MPDU frames. Note that | |
820 | * mac80211 will not currently use any of the regular queues | |
821 | * for aggregation. | |
830f9038 JB |
822 | * |
823 | * @rate_control_algorithm: rate control algorithm for this hardware. | |
824 | * If unset (NULL), the default algorithm will be used. Must be | |
825 | * set before calling ieee80211_register_hw(). | |
32bfd35d JB |
826 | * |
827 | * @vif_data_size: size (in bytes) of the drv_priv data area | |
828 | * within &struct ieee80211_vif. | |
17741cdc JB |
829 | * @sta_data_size: size (in bytes) of the drv_priv data area |
830 | * within &struct ieee80211_sta. | |
7ac1bd6a | 831 | */ |
f0706e82 | 832 | struct ieee80211_hw { |
f0706e82 | 833 | struct ieee80211_conf conf; |
75a5f0cc | 834 | struct wiphy *wiphy; |
f0706e82 | 835 | struct workqueue_struct *workqueue; |
830f9038 | 836 | const char *rate_control_algorithm; |
f0706e82 | 837 | void *priv; |
75a5f0cc | 838 | u32 flags; |
f0706e82 | 839 | unsigned int extra_tx_headroom; |
f0706e82 | 840 | int channel_change_time; |
32bfd35d | 841 | int vif_data_size; |
17741cdc | 842 | int sta_data_size; |
ea95bba4 TW |
843 | u16 queues; |
844 | u16 ampdu_queues; | |
845 | u16 max_listen_interval; | |
f0706e82 | 846 | s8 max_signal; |
f0706e82 JB |
847 | }; |
848 | ||
b2e1b302 LR |
849 | struct ieee80211_hw *wiphy_to_hw(struct wiphy *wiphy); |
850 | ||
75a5f0cc JB |
851 | /** |
852 | * SET_IEEE80211_DEV - set device for 802.11 hardware | |
853 | * | |
854 | * @hw: the &struct ieee80211_hw to set the device for | |
855 | * @dev: the &struct device of this 802.11 device | |
856 | */ | |
f0706e82 JB |
857 | static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) |
858 | { | |
859 | set_wiphy_dev(hw->wiphy, dev); | |
860 | } | |
861 | ||
75a5f0cc JB |
862 | /** |
863 | * SET_IEEE80211_PERM_ADDR - set the permanenet MAC address for 802.11 hardware | |
864 | * | |
865 | * @hw: the &struct ieee80211_hw to set the MAC address for | |
866 | * @addr: the address to set | |
867 | */ | |
f0706e82 JB |
868 | static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) |
869 | { | |
870 | memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); | |
871 | } | |
872 | ||
e2530083 JB |
873 | static inline int ieee80211_num_regular_queues(struct ieee80211_hw *hw) |
874 | { | |
e2530083 | 875 | return hw->queues; |
e2530083 JB |
876 | } |
877 | ||
878 | static inline int ieee80211_num_queues(struct ieee80211_hw *hw) | |
879 | { | |
e2530083 | 880 | return hw->queues + hw->ampdu_queues; |
e2530083 JB |
881 | } |
882 | ||
2e92e6f2 JB |
883 | static inline struct ieee80211_rate * |
884 | ieee80211_get_tx_rate(const struct ieee80211_hw *hw, | |
e039fa4a | 885 | const struct ieee80211_tx_info *c) |
2e92e6f2 JB |
886 | { |
887 | if (WARN_ON(c->tx_rate_idx < 0)) | |
888 | return NULL; | |
889 | return &hw->wiphy->bands[c->band]->bitrates[c->tx_rate_idx]; | |
890 | } | |
891 | ||
892 | static inline struct ieee80211_rate * | |
893 | ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, | |
e039fa4a | 894 | const struct ieee80211_tx_info *c) |
2e92e6f2 | 895 | { |
e039fa4a | 896 | if (c->control.rts_cts_rate_idx < 0) |
2e92e6f2 | 897 | return NULL; |
e039fa4a | 898 | return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; |
2e92e6f2 JB |
899 | } |
900 | ||
901 | static inline struct ieee80211_rate * | |
902 | ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, | |
e039fa4a | 903 | const struct ieee80211_tx_info *c) |
2e92e6f2 | 904 | { |
e039fa4a | 905 | if (c->control.alt_retry_rate_idx < 0) |
2e92e6f2 | 906 | return NULL; |
e039fa4a | 907 | return &hw->wiphy->bands[c->band]->bitrates[c->control.alt_retry_rate_idx]; |
2e92e6f2 JB |
908 | } |
909 | ||
75a5f0cc JB |
910 | /** |
911 | * DOC: Hardware crypto acceleration | |
912 | * | |
913 | * mac80211 is capable of taking advantage of many hardware | |
914 | * acceleration designs for encryption and decryption operations. | |
915 | * | |
916 | * The set_key() callback in the &struct ieee80211_ops for a given | |
917 | * device is called to enable hardware acceleration of encryption and | |
918 | * decryption. The callback takes an @address parameter that will be | |
919 | * the broadcast address for default keys, the other station's hardware | |
920 | * address for individual keys or the zero address for keys that will | |
921 | * be used only for transmission. | |
922 | * Multiple transmission keys with the same key index may be used when | |
923 | * VLANs are configured for an access point. | |
4150c572 | 924 | * |
75a5f0cc JB |
925 | * The @local_address parameter will always be set to our own address, |
926 | * this is only relevant if you support multiple local addresses. | |
927 | * | |
928 | * When transmitting, the TX control data will use the @hw_key_idx | |
929 | * selected by the driver by modifying the &struct ieee80211_key_conf | |
930 | * pointed to by the @key parameter to the set_key() function. | |
931 | * | |
932 | * The set_key() call for the %SET_KEY command should return 0 if | |
933 | * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be | |
934 | * added; if you return 0 then hw_key_idx must be assigned to the | |
935 | * hardware key index, you are free to use the full u8 range. | |
936 | * | |
937 | * When the cmd is %DISABLE_KEY then it must succeed. | |
938 | * | |
939 | * Note that it is permissible to not decrypt a frame even if a key | |
940 | * for it has been uploaded to hardware, the stack will not make any | |
941 | * decision based on whether a key has been uploaded or not but rather | |
942 | * based on the receive flags. | |
943 | * | |
944 | * The &struct ieee80211_key_conf structure pointed to by the @key | |
945 | * parameter is guaranteed to be valid until another call to set_key() | |
946 | * removes it, but it can only be used as a cookie to differentiate | |
947 | * keys. | |
9ae4fda3 EG |
948 | * |
949 | * In TKIP some HW need to be provided a phase 1 key, for RX decryption | |
950 | * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key | |
951 | * handler. | |
952 | * The update_tkip_key() call updates the driver with the new phase 1 key. | |
953 | * This happens everytime the iv16 wraps around (every 65536 packets). The | |
954 | * set_key() call will happen only once for each key (unless the AP did | |
955 | * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is | |
956 | * provided by udpate_tkip_key only. The trigger that makes mac80211 call this | |
957 | * handler is software decryption with wrap around of iv16. | |
4150c572 | 958 | */ |
75a5f0cc JB |
959 | |
960 | /** | |
961 | * DOC: Frame filtering | |
962 | * | |
963 | * mac80211 requires to see many management frames for proper | |
964 | * operation, and users may want to see many more frames when | |
965 | * in monitor mode. However, for best CPU usage and power consumption, | |
966 | * having as few frames as possible percolate through the stack is | |
967 | * desirable. Hence, the hardware should filter as much as possible. | |
968 | * | |
969 | * To achieve this, mac80211 uses filter flags (see below) to tell | |
970 | * the driver's configure_filter() function which frames should be | |
971 | * passed to mac80211 and which should be filtered out. | |
972 | * | |
973 | * The configure_filter() callback is invoked with the parameters | |
974 | * @mc_count and @mc_list for the combined multicast address list | |
975 | * of all virtual interfaces, @changed_flags telling which flags | |
976 | * were changed and @total_flags with the new flag states. | |
977 | * | |
978 | * If your device has no multicast address filters your driver will | |
979 | * need to check both the %FIF_ALLMULTI flag and the @mc_count | |
980 | * parameter to see whether multicast frames should be accepted | |
981 | * or dropped. | |
982 | * | |
d0f5afbe MB |
983 | * All unsupported flags in @total_flags must be cleared. |
984 | * Hardware does not support a flag if it is incapable of _passing_ | |
985 | * the frame to the stack. Otherwise the driver must ignore | |
986 | * the flag, but not clear it. | |
987 | * You must _only_ clear the flag (announce no support for the | |
988 | * flag to mac80211) if you are not able to pass the packet type | |
989 | * to the stack (so the hardware always filters it). | |
990 | * So for example, you should clear @FIF_CONTROL, if your hardware | |
991 | * always filters control frames. If your hardware always passes | |
992 | * control frames to the kernel and is incapable of filtering them, | |
993 | * you do _not_ clear the @FIF_CONTROL flag. | |
994 | * This rule applies to all other FIF flags as well. | |
4150c572 | 995 | */ |
75a5f0cc JB |
996 | |
997 | /** | |
998 | * enum ieee80211_filter_flags - hardware filter flags | |
999 | * | |
1000 | * These flags determine what the filter in hardware should be | |
1001 | * programmed to let through and what should not be passed to the | |
1002 | * stack. It is always safe to pass more frames than requested, | |
1003 | * but this has negative impact on power consumption. | |
1004 | * | |
1005 | * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, | |
1006 | * think of the BSS as your network segment and then this corresponds | |
1007 | * to the regular ethernet device promiscuous mode. | |
1008 | * | |
1009 | * @FIF_ALLMULTI: pass all multicast frames, this is used if requested | |
1010 | * by the user or if the hardware is not capable of filtering by | |
1011 | * multicast address. | |
1012 | * | |
1013 | * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the | |
1014 | * %RX_FLAG_FAILED_FCS_CRC for them) | |
1015 | * | |
1016 | * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set | |
1017 | * the %RX_FLAG_FAILED_PLCP_CRC for them | |
1018 | * | |
1019 | * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate | |
1020 | * to the hardware that it should not filter beacons or probe responses | |
1021 | * by BSSID. Filtering them can greatly reduce the amount of processing | |
1022 | * mac80211 needs to do and the amount of CPU wakeups, so you should | |
1023 | * honour this flag if possible. | |
1024 | * | |
1025 | * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then | |
1026 | * only those addressed to this station | |
1027 | * | |
1028 | * @FIF_OTHER_BSS: pass frames destined to other BSSes | |
4150c572 | 1029 | */ |
75a5f0cc JB |
1030 | enum ieee80211_filter_flags { |
1031 | FIF_PROMISC_IN_BSS = 1<<0, | |
1032 | FIF_ALLMULTI = 1<<1, | |
1033 | FIF_FCSFAIL = 1<<2, | |
1034 | FIF_PLCPFAIL = 1<<3, | |
1035 | FIF_BCN_PRBRESP_PROMISC = 1<<4, | |
1036 | FIF_CONTROL = 1<<5, | |
1037 | FIF_OTHER_BSS = 1<<6, | |
1038 | }; | |
1039 | ||
1b7d03ac RR |
1040 | /** |
1041 | * enum ieee80211_ampdu_mlme_action - A-MPDU actions | |
1042 | * | |
1043 | * These flags are used with the ampdu_action() callback in | |
1044 | * &struct ieee80211_ops to indicate which action is needed. | |
1045 | * @IEEE80211_AMPDU_RX_START: start Rx aggregation | |
1046 | * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation | |
0df3ef45 RR |
1047 | * @IEEE80211_AMPDU_TX_START: start Tx aggregation |
1048 | * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation | |
1b7d03ac RR |
1049 | */ |
1050 | enum ieee80211_ampdu_mlme_action { | |
1051 | IEEE80211_AMPDU_RX_START, | |
1052 | IEEE80211_AMPDU_RX_STOP, | |
0df3ef45 RR |
1053 | IEEE80211_AMPDU_TX_START, |
1054 | IEEE80211_AMPDU_TX_STOP, | |
1b7d03ac | 1055 | }; |
75a5f0cc JB |
1056 | |
1057 | /** | |
1058 | * struct ieee80211_ops - callbacks from mac80211 to the driver | |
1059 | * | |
1060 | * This structure contains various callbacks that the driver may | |
1061 | * handle or, in some cases, must handle, for example to configure | |
1062 | * the hardware to a new channel or to transmit a frame. | |
1063 | * | |
1064 | * @tx: Handler that 802.11 module calls for each transmitted frame. | |
1065 | * skb contains the buffer starting from the IEEE 802.11 header. | |
1066 | * The low-level driver should send the frame out based on | |
eefce91a JB |
1067 | * configuration in the TX control data. This handler should, |
1068 | * preferably, never fail and stop queues appropriately, more | |
1069 | * importantly, however, it must never fail for A-MPDU-queues. | |
1070 | * Must be implemented and atomic. | |
75a5f0cc JB |
1071 | * |
1072 | * @start: Called before the first netdevice attached to the hardware | |
1073 | * is enabled. This should turn on the hardware and must turn on | |
1074 | * frame reception (for possibly enabled monitor interfaces.) | |
1075 | * Returns negative error codes, these may be seen in userspace, | |
1076 | * or zero. | |
1077 | * When the device is started it should not have a MAC address | |
1078 | * to avoid acknowledging frames before a non-monitor device | |
1079 | * is added. | |
1080 | * Must be implemented. | |
1081 | * | |
1082 | * @stop: Called after last netdevice attached to the hardware | |
1083 | * is disabled. This should turn off the hardware (at least | |
1084 | * it must turn off frame reception.) | |
1085 | * May be called right after add_interface if that rejects | |
1086 | * an interface. | |
1087 | * Must be implemented. | |
1088 | * | |
1089 | * @add_interface: Called when a netdevice attached to the hardware is | |
1090 | * enabled. Because it is not called for monitor mode devices, @open | |
1091 | * and @stop must be implemented. | |
1092 | * The driver should perform any initialization it needs before | |
1093 | * the device can be enabled. The initial configuration for the | |
1094 | * interface is given in the conf parameter. | |
1095 | * The callback may refuse to add an interface by returning a | |
1096 | * negative error code (which will be seen in userspace.) | |
1097 | * Must be implemented. | |
1098 | * | |
1099 | * @remove_interface: Notifies a driver that an interface is going down. | |
1100 | * The @stop callback is called after this if it is the last interface | |
1101 | * and no monitor interfaces are present. | |
1102 | * When all interfaces are removed, the MAC address in the hardware | |
1103 | * must be cleared so the device no longer acknowledges packets, | |
1104 | * the mac_addr member of the conf structure is, however, set to the | |
1105 | * MAC address of the device going away. | |
1106 | * Hence, this callback must be implemented. | |
1107 | * | |
1108 | * @config: Handler for configuration requests. IEEE 802.11 code calls this | |
1109 | * function to change hardware configuration, e.g., channel. | |
1110 | * | |
1111 | * @config_interface: Handler for configuration requests related to interfaces | |
1112 | * (e.g. BSSID changes.) | |
1113 | * | |
471b3efd JB |
1114 | * @bss_info_changed: Handler for configuration requests related to BSS |
1115 | * parameters that may vary during BSS's lifespan, and may affect low | |
1116 | * level driver (e.g. assoc/disassoc status, erp parameters). | |
1117 | * This function should not be used if no BSS has been set, unless | |
1118 | * for association indication. The @changed parameter indicates which | |
d18ef29f | 1119 | * of the bss parameters has changed when a call is made. |
471b3efd | 1120 | * |
75a5f0cc JB |
1121 | * @configure_filter: Configure the device's RX filter. |
1122 | * See the section "Frame filtering" for more information. | |
1123 | * This callback must be implemented and atomic. | |
1124 | * | |
546c80c9 | 1125 | * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit |
17741cdc | 1126 | * must be set or cleared for a given STA. Must be atomic. |
75a5f0cc JB |
1127 | * |
1128 | * @set_key: See the section "Hardware crypto acceleration" | |
1129 | * This callback can sleep, and is only called between add_interface | |
1130 | * and remove_interface calls, i.e. while the interface with the | |
1131 | * given local_address is enabled. | |
1132 | * | |
9ae4fda3 EG |
1133 | * @update_tkip_key: See the section "Hardware crypto acceleration" |
1134 | * This callback will be called in the context of Rx. Called for drivers | |
1135 | * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. | |
1136 | * | |
75a5f0cc | 1137 | * @hw_scan: Ask the hardware to service the scan request, no need to start |
8318d78a JB |
1138 | * the scan state machine in stack. The scan must honour the channel |
1139 | * configuration done by the regulatory agent in the wiphy's registered | |
5bc75728 JB |
1140 | * bands. When the scan finishes, ieee80211_scan_completed() must be |
1141 | * called; note that it also must be called when the scan cannot finish | |
1142 | * because the hardware is turned off! Anything else is a bug! | |
75a5f0cc JB |
1143 | * |
1144 | * @get_stats: return low-level statistics | |
1145 | * | |
62da92fb JB |
1146 | * @get_tkip_seq: If your device implements TKIP encryption in hardware this |
1147 | * callback should be provided to read the TKIP transmit IVs (both IV32 | |
1148 | * and IV16) for the given key from hardware. | |
75a5f0cc JB |
1149 | * |
1150 | * @set_rts_threshold: Configuration of RTS threshold (if device needs it) | |
1151 | * | |
1152 | * @set_frag_threshold: Configuration of fragmentation threshold. Assign this if | |
1153 | * the device does fragmentation by itself; if this method is assigned then | |
1154 | * the stack will not do fragmentation. | |
1155 | * | |
1156 | * @set_retry_limit: Configuration of retry limits (if device needs it) | |
1157 | * | |
478f8d2b TW |
1158 | * @sta_notify: Notifies low level driver about addition or removal |
1159 | * of assocaited station or AP. | |
75a5f0cc | 1160 | * |
75a5f0cc | 1161 | * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), |
fe3fa827 | 1162 | * bursting) for a hardware TX queue. |
75a5f0cc JB |
1163 | * |
1164 | * @get_tx_stats: Get statistics of the current TX queue status. This is used | |
1165 | * to get number of currently queued packets (queue length), maximum queue | |
1166 | * size (limit), and total number of packets sent using each TX queue | |
57ffc589 JB |
1167 | * (count). The 'stats' pointer points to an array that has hw->queues + |
1168 | * hw->ampdu_queues items. | |
75a5f0cc JB |
1169 | * |
1170 | * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, | |
1171 | * this is only used for IBSS mode debugging and, as such, is not a | |
1172 | * required function. Must be atomic. | |
1173 | * | |
1174 | * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize | |
1175 | * with other STAs in the IBSS. This is only used in IBSS mode. This | |
1176 | * function is optional if the firmware/hardware takes full care of | |
1177 | * TSF synchronization. | |
1178 | * | |
75a5f0cc JB |
1179 | * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. |
1180 | * This is needed only for IBSS mode and the result of this function is | |
1181 | * used to determine whether to reply to Probe Requests. | |
d3c990fb RR |
1182 | * |
1183 | * @conf_ht: Configures low level driver with 802.11n HT data. Must be atomic. | |
1b7d03ac RR |
1184 | * |
1185 | * @ampdu_action: Perform a certain A-MPDU action | |
1186 | * The RA/TID combination determines the destination and TID we want | |
1187 | * the ampdu action to be performed for. The action is defined through | |
1188 | * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) | |
0df3ef45 RR |
1189 | * is the first frame we expect to perform the action on. notice |
1190 | * that TX/RX_STOP can pass NULL for this parameter. | |
75a5f0cc | 1191 | */ |
f0706e82 | 1192 | struct ieee80211_ops { |
e039fa4a | 1193 | int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); |
4150c572 | 1194 | int (*start)(struct ieee80211_hw *hw); |
4150c572 | 1195 | void (*stop)(struct ieee80211_hw *hw); |
f0706e82 JB |
1196 | int (*add_interface)(struct ieee80211_hw *hw, |
1197 | struct ieee80211_if_init_conf *conf); | |
f0706e82 JB |
1198 | void (*remove_interface)(struct ieee80211_hw *hw, |
1199 | struct ieee80211_if_init_conf *conf); | |
f0706e82 | 1200 | int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
f0706e82 | 1201 | int (*config_interface)(struct ieee80211_hw *hw, |
32bfd35d JB |
1202 | struct ieee80211_vif *vif, |
1203 | struct ieee80211_if_conf *conf); | |
471b3efd JB |
1204 | void (*bss_info_changed)(struct ieee80211_hw *hw, |
1205 | struct ieee80211_vif *vif, | |
1206 | struct ieee80211_bss_conf *info, | |
1207 | u32 changed); | |
4150c572 JB |
1208 | void (*configure_filter)(struct ieee80211_hw *hw, |
1209 | unsigned int changed_flags, | |
1210 | unsigned int *total_flags, | |
1211 | int mc_count, struct dev_addr_list *mc_list); | |
17741cdc JB |
1212 | int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
1213 | bool set); | |
ea49c359 | 1214 | int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
11a843b7 JB |
1215 | const u8 *local_address, const u8 *address, |
1216 | struct ieee80211_key_conf *key); | |
9ae4fda3 EG |
1217 | void (*update_tkip_key)(struct ieee80211_hw *hw, |
1218 | struct ieee80211_key_conf *conf, const u8 *address, | |
1219 | u32 iv32, u16 *phase1key); | |
f0706e82 | 1220 | int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len); |
f0706e82 JB |
1221 | int (*get_stats)(struct ieee80211_hw *hw, |
1222 | struct ieee80211_low_level_stats *stats); | |
62da92fb JB |
1223 | void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, |
1224 | u32 *iv32, u16 *iv16); | |
f0706e82 | 1225 | int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); |
f0706e82 | 1226 | int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); |
f0706e82 JB |
1227 | int (*set_retry_limit)(struct ieee80211_hw *hw, |
1228 | u32 short_retry, u32 long_retr); | |
32bfd35d | 1229 | void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
17741cdc | 1230 | enum sta_notify_cmd, struct ieee80211_sta *sta); |
e100bb64 | 1231 | int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, |
f0706e82 | 1232 | const struct ieee80211_tx_queue_params *params); |
f0706e82 JB |
1233 | int (*get_tx_stats)(struct ieee80211_hw *hw, |
1234 | struct ieee80211_tx_queue_stats *stats); | |
f0706e82 | 1235 | u64 (*get_tsf)(struct ieee80211_hw *hw); |
f0706e82 | 1236 | void (*reset_tsf)(struct ieee80211_hw *hw); |
f0706e82 | 1237 | int (*tx_last_beacon)(struct ieee80211_hw *hw); |
1b7d03ac RR |
1238 | int (*ampdu_action)(struct ieee80211_hw *hw, |
1239 | enum ieee80211_ampdu_mlme_action action, | |
17741cdc | 1240 | struct ieee80211_sta *sta, u16 tid, u16 *ssn); |
f0706e82 JB |
1241 | }; |
1242 | ||
75a5f0cc JB |
1243 | /** |
1244 | * ieee80211_alloc_hw - Allocate a new hardware device | |
1245 | * | |
1246 | * This must be called once for each hardware device. The returned pointer | |
1247 | * must be used to refer to this device when calling other functions. | |
1248 | * mac80211 allocates a private data area for the driver pointed to by | |
1249 | * @priv in &struct ieee80211_hw, the size of this area is given as | |
1250 | * @priv_data_len. | |
1251 | * | |
1252 | * @priv_data_len: length of private data | |
1253 | * @ops: callbacks for this device | |
f0706e82 JB |
1254 | */ |
1255 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, | |
1256 | const struct ieee80211_ops *ops); | |
1257 | ||
75a5f0cc JB |
1258 | /** |
1259 | * ieee80211_register_hw - Register hardware device | |
1260 | * | |
dbbea671 JB |
1261 | * You must call this function before any other functions in |
1262 | * mac80211. Note that before a hardware can be registered, you | |
1263 | * need to fill the contained wiphy's information. | |
75a5f0cc JB |
1264 | * |
1265 | * @hw: the device to register as returned by ieee80211_alloc_hw() | |
1266 | */ | |
f0706e82 JB |
1267 | int ieee80211_register_hw(struct ieee80211_hw *hw); |
1268 | ||
f0706e82 JB |
1269 | #ifdef CONFIG_MAC80211_LEDS |
1270 | extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); | |
1271 | extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); | |
47f0c502 | 1272 | extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); |
cdcb006f | 1273 | extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); |
f0706e82 | 1274 | #endif |
75a5f0cc JB |
1275 | /** |
1276 | * ieee80211_get_tx_led_name - get name of TX LED | |
1277 | * | |
1278 | * mac80211 creates a transmit LED trigger for each wireless hardware | |
1279 | * that can be used to drive LEDs if your driver registers a LED device. | |
1280 | * This function returns the name (or %NULL if not configured for LEDs) | |
1281 | * of the trigger so you can automatically link the LED device. | |
1282 | * | |
1283 | * @hw: the hardware to get the LED trigger name for | |
1284 | */ | |
f0706e82 JB |
1285 | static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
1286 | { | |
1287 | #ifdef CONFIG_MAC80211_LEDS | |
1288 | return __ieee80211_get_tx_led_name(hw); | |
1289 | #else | |
1290 | return NULL; | |
1291 | #endif | |
1292 | } | |
1293 | ||
75a5f0cc JB |
1294 | /** |
1295 | * ieee80211_get_rx_led_name - get name of RX LED | |
1296 | * | |
1297 | * mac80211 creates a receive LED trigger for each wireless hardware | |
1298 | * that can be used to drive LEDs if your driver registers a LED device. | |
1299 | * This function returns the name (or %NULL if not configured for LEDs) | |
1300 | * of the trigger so you can automatically link the LED device. | |
1301 | * | |
1302 | * @hw: the hardware to get the LED trigger name for | |
1303 | */ | |
f0706e82 JB |
1304 | static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
1305 | { | |
1306 | #ifdef CONFIG_MAC80211_LEDS | |
1307 | return __ieee80211_get_rx_led_name(hw); | |
1308 | #else | |
1309 | return NULL; | |
1310 | #endif | |
1311 | } | |
1312 | ||
cdcb006f ID |
1313 | /** |
1314 | * ieee80211_get_assoc_led_name - get name of association LED | |
1315 | * | |
1316 | * mac80211 creates a association LED trigger for each wireless hardware | |
1317 | * that can be used to drive LEDs if your driver registers a LED device. | |
1318 | * This function returns the name (or %NULL if not configured for LEDs) | |
1319 | * of the trigger so you can automatically link the LED device. | |
1320 | * | |
1321 | * @hw: the hardware to get the LED trigger name for | |
1322 | */ | |
47f0c502 MB |
1323 | static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
1324 | { | |
1325 | #ifdef CONFIG_MAC80211_LEDS | |
1326 | return __ieee80211_get_assoc_led_name(hw); | |
1327 | #else | |
1328 | return NULL; | |
1329 | #endif | |
1330 | } | |
1331 | ||
cdcb006f ID |
1332 | /** |
1333 | * ieee80211_get_radio_led_name - get name of radio LED | |
1334 | * | |
1335 | * mac80211 creates a radio change LED trigger for each wireless hardware | |
1336 | * that can be used to drive LEDs if your driver registers a LED device. | |
1337 | * This function returns the name (or %NULL if not configured for LEDs) | |
1338 | * of the trigger so you can automatically link the LED device. | |
1339 | * | |
1340 | * @hw: the hardware to get the LED trigger name for | |
1341 | */ | |
1342 | static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) | |
1343 | { | |
1344 | #ifdef CONFIG_MAC80211_LEDS | |
1345 | return __ieee80211_get_radio_led_name(hw); | |
1346 | #else | |
1347 | return NULL; | |
1348 | #endif | |
1349 | } | |
47f0c502 | 1350 | |
75a5f0cc JB |
1351 | /** |
1352 | * ieee80211_unregister_hw - Unregister a hardware device | |
1353 | * | |
1354 | * This function instructs mac80211 to free allocated resources | |
1355 | * and unregister netdevices from the networking subsystem. | |
1356 | * | |
1357 | * @hw: the hardware to unregister | |
1358 | */ | |
f0706e82 JB |
1359 | void ieee80211_unregister_hw(struct ieee80211_hw *hw); |
1360 | ||
75a5f0cc JB |
1361 | /** |
1362 | * ieee80211_free_hw - free hardware descriptor | |
1363 | * | |
1364 | * This function frees everything that was allocated, including the | |
1365 | * private data for the driver. You must call ieee80211_unregister_hw() | |
6ef307bc | 1366 | * before calling this function. |
75a5f0cc JB |
1367 | * |
1368 | * @hw: the hardware to free | |
1369 | */ | |
f0706e82 JB |
1370 | void ieee80211_free_hw(struct ieee80211_hw *hw); |
1371 | ||
75a5f0cc | 1372 | /* trick to avoid symbol clashes with the ieee80211 subsystem */ |
f0706e82 JB |
1373 | void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, |
1374 | struct ieee80211_rx_status *status); | |
75a5f0cc JB |
1375 | |
1376 | /** | |
1377 | * ieee80211_rx - receive frame | |
1378 | * | |
1379 | * Use this function to hand received frames to mac80211. The receive | |
1380 | * buffer in @skb must start with an IEEE 802.11 header or a radiotap | |
1381 | * header if %RX_FLAG_RADIOTAP is set in the @status flags. | |
1382 | * | |
2485f710 JB |
1383 | * This function may not be called in IRQ context. Calls to this function |
1384 | * for a single hardware must be synchronized against each other. Calls | |
1385 | * to this function and ieee80211_rx_irqsafe() may not be mixed for a | |
1386 | * single hardware. | |
75a5f0cc JB |
1387 | * |
1388 | * @hw: the hardware this frame came in on | |
1389 | * @skb: the buffer to receive, owned by mac80211 after this call | |
1390 | * @status: status of this frame; the status pointer need not be valid | |
1391 | * after this function returns | |
1392 | */ | |
1393 | static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, | |
1394 | struct ieee80211_rx_status *status) | |
1395 | { | |
1396 | __ieee80211_rx(hw, skb, status); | |
1397 | } | |
1398 | ||
1399 | /** | |
1400 | * ieee80211_rx_irqsafe - receive frame | |
1401 | * | |
1402 | * Like ieee80211_rx() but can be called in IRQ context | |
2485f710 JB |
1403 | * (internally defers to a tasklet.) |
1404 | * | |
1405 | * Calls to this function and ieee80211_rx() may not be mixed for a | |
1406 | * single hardware. | |
75a5f0cc JB |
1407 | * |
1408 | * @hw: the hardware this frame came in on | |
1409 | * @skb: the buffer to receive, owned by mac80211 after this call | |
1410 | * @status: status of this frame; the status pointer need not be valid | |
1411 | * after this function returns and is not freed by mac80211, | |
1412 | * it is recommended that it points to a stack area | |
1413 | */ | |
f0706e82 JB |
1414 | void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, |
1415 | struct sk_buff *skb, | |
1416 | struct ieee80211_rx_status *status); | |
1417 | ||
75a5f0cc JB |
1418 | /** |
1419 | * ieee80211_tx_status - transmit status callback | |
1420 | * | |
1421 | * Call this function for all transmitted frames after they have been | |
1422 | * transmitted. It is permissible to not call this function for | |
1423 | * multicast frames but this can affect statistics. | |
1424 | * | |
2485f710 JB |
1425 | * This function may not be called in IRQ context. Calls to this function |
1426 | * for a single hardware must be synchronized against each other. Calls | |
1427 | * to this function and ieee80211_tx_status_irqsafe() may not be mixed | |
1428 | * for a single hardware. | |
1429 | * | |
75a5f0cc JB |
1430 | * @hw: the hardware the frame was transmitted by |
1431 | * @skb: the frame that was transmitted, owned by mac80211 after this call | |
75a5f0cc | 1432 | */ |
f0706e82 | 1433 | void ieee80211_tx_status(struct ieee80211_hw *hw, |
e039fa4a | 1434 | struct sk_buff *skb); |
2485f710 JB |
1435 | |
1436 | /** | |
6ef307bc | 1437 | * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback |
2485f710 JB |
1438 | * |
1439 | * Like ieee80211_tx_status() but can be called in IRQ context | |
1440 | * (internally defers to a tasklet.) | |
1441 | * | |
1442 | * Calls to this function and ieee80211_tx_status() may not be mixed for a | |
1443 | * single hardware. | |
1444 | * | |
1445 | * @hw: the hardware the frame was transmitted by | |
1446 | * @skb: the frame that was transmitted, owned by mac80211 after this call | |
2485f710 | 1447 | */ |
f0706e82 | 1448 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
e039fa4a | 1449 | struct sk_buff *skb); |
f0706e82 JB |
1450 | |
1451 | /** | |
1452 | * ieee80211_beacon_get - beacon generation function | |
1453 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
32bfd35d | 1454 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1455 | * @control: will be filled with information needed to send this beacon. |
1456 | * | |
1457 | * If the beacon frames are generated by the host system (i.e., not in | |
1458 | * hardware/firmware), the low-level driver uses this function to receive | |
1459 | * the next beacon frame from the 802.11 code. The low-level is responsible | |
1460 | * for calling this function before beacon data is needed (e.g., based on | |
1461 | * hardware interrupt). Returned skb is used only once and low-level driver | |
1462 | * is responsible of freeing it. | |
1463 | */ | |
1464 | struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, | |
e039fa4a | 1465 | struct ieee80211_vif *vif); |
f0706e82 JB |
1466 | |
1467 | /** | |
1468 | * ieee80211_rts_get - RTS frame generation function | |
1469 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
32bfd35d | 1470 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1471 | * @frame: pointer to the frame that is going to be protected by the RTS. |
1472 | * @frame_len: the frame length (in octets). | |
e039fa4a | 1473 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
f0706e82 JB |
1474 | * @rts: The buffer where to store the RTS frame. |
1475 | * | |
1476 | * If the RTS frames are generated by the host system (i.e., not in | |
1477 | * hardware/firmware), the low-level driver uses this function to receive | |
1478 | * the next RTS frame from the 802.11 code. The low-level is responsible | |
1479 | * for calling this function before and RTS frame is needed. | |
1480 | */ | |
32bfd35d | 1481 | void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
f0706e82 | 1482 | const void *frame, size_t frame_len, |
e039fa4a | 1483 | const struct ieee80211_tx_info *frame_txctl, |
f0706e82 JB |
1484 | struct ieee80211_rts *rts); |
1485 | ||
1486 | /** | |
1487 | * ieee80211_rts_duration - Get the duration field for an RTS frame | |
1488 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
32bfd35d | 1489 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
f0706e82 | 1490 | * @frame_len: the length of the frame that is going to be protected by the RTS. |
e039fa4a | 1491 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
f0706e82 JB |
1492 | * |
1493 | * If the RTS is generated in firmware, but the host system must provide | |
1494 | * the duration field, the low-level driver uses this function to receive | |
1495 | * the duration field value in little-endian byteorder. | |
1496 | */ | |
32bfd35d JB |
1497 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
1498 | struct ieee80211_vif *vif, size_t frame_len, | |
e039fa4a | 1499 | const struct ieee80211_tx_info *frame_txctl); |
f0706e82 JB |
1500 | |
1501 | /** | |
1502 | * ieee80211_ctstoself_get - CTS-to-self frame generation function | |
1503 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
32bfd35d | 1504 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1505 | * @frame: pointer to the frame that is going to be protected by the CTS-to-self. |
1506 | * @frame_len: the frame length (in octets). | |
e039fa4a | 1507 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
f0706e82 JB |
1508 | * @cts: The buffer where to store the CTS-to-self frame. |
1509 | * | |
1510 | * If the CTS-to-self frames are generated by the host system (i.e., not in | |
1511 | * hardware/firmware), the low-level driver uses this function to receive | |
1512 | * the next CTS-to-self frame from the 802.11 code. The low-level is responsible | |
1513 | * for calling this function before and CTS-to-self frame is needed. | |
1514 | */ | |
32bfd35d JB |
1515 | void ieee80211_ctstoself_get(struct ieee80211_hw *hw, |
1516 | struct ieee80211_vif *vif, | |
f0706e82 | 1517 | const void *frame, size_t frame_len, |
e039fa4a | 1518 | const struct ieee80211_tx_info *frame_txctl, |
f0706e82 JB |
1519 | struct ieee80211_cts *cts); |
1520 | ||
1521 | /** | |
1522 | * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame | |
1523 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
32bfd35d | 1524 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
f0706e82 | 1525 | * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. |
e039fa4a | 1526 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
f0706e82 JB |
1527 | * |
1528 | * If the CTS-to-self is generated in firmware, but the host system must provide | |
1529 | * the duration field, the low-level driver uses this function to receive | |
1530 | * the duration field value in little-endian byteorder. | |
1531 | */ | |
32bfd35d JB |
1532 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
1533 | struct ieee80211_vif *vif, | |
f0706e82 | 1534 | size_t frame_len, |
e039fa4a | 1535 | const struct ieee80211_tx_info *frame_txctl); |
f0706e82 JB |
1536 | |
1537 | /** | |
1538 | * ieee80211_generic_frame_duration - Calculate the duration field for a frame | |
1539 | * @hw: pointer obtained from ieee80211_alloc_hw(). | |
32bfd35d | 1540 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
f0706e82 | 1541 | * @frame_len: the length of the frame. |
8318d78a | 1542 | * @rate: the rate at which the frame is going to be transmitted. |
f0706e82 JB |
1543 | * |
1544 | * Calculate the duration field of some generic frame, given its | |
1545 | * length and transmission rate (in 100kbps). | |
1546 | */ | |
32bfd35d JB |
1547 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
1548 | struct ieee80211_vif *vif, | |
f0706e82 | 1549 | size_t frame_len, |
8318d78a | 1550 | struct ieee80211_rate *rate); |
f0706e82 JB |
1551 | |
1552 | /** | |
1553 | * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames | |
1554 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
32bfd35d | 1555 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
f0706e82 JB |
1556 | * @control: will be filled with information needed to send returned frame. |
1557 | * | |
1558 | * Function for accessing buffered broadcast and multicast frames. If | |
1559 | * hardware/firmware does not implement buffering of broadcast/multicast | |
1560 | * frames when power saving is used, 802.11 code buffers them in the host | |
1561 | * memory. The low-level driver uses this function to fetch next buffered | |
1562 | * frame. In most cases, this is used when generating beacon frame. This | |
1563 | * function returns a pointer to the next buffered skb or NULL if no more | |
1564 | * buffered frames are available. | |
1565 | * | |
1566 | * Note: buffered frames are returned only after DTIM beacon frame was | |
1567 | * generated with ieee80211_beacon_get() and the low-level driver must thus | |
1568 | * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns | |
1569 | * NULL if the previous generated beacon was not DTIM, so the low-level driver | |
1570 | * does not need to check for DTIM beacons separately and should be able to | |
1571 | * use common code for all beacons. | |
1572 | */ | |
1573 | struct sk_buff * | |
e039fa4a | 1574 | ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); |
f0706e82 | 1575 | |
75a5f0cc JB |
1576 | /** |
1577 | * ieee80211_get_hdrlen_from_skb - get header length from data | |
1578 | * | |
1579 | * Given an skb with a raw 802.11 header at the data pointer this function | |
f0706e82 JB |
1580 | * returns the 802.11 header length in bytes (not including encryption |
1581 | * headers). If the data in the sk_buff is too short to contain a valid 802.11 | |
1582 | * header the function returns 0. | |
75a5f0cc JB |
1583 | * |
1584 | * @skb: the frame | |
f0706e82 | 1585 | */ |
c9c6950c | 1586 | unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); |
f0706e82 | 1587 | |
6693be71 HH |
1588 | /** |
1589 | * ieee80211_hdrlen - get header length in bytes from frame control | |
1590 | * @fc: frame control field in little-endian format | |
1591 | */ | |
1592 | unsigned int ieee80211_hdrlen(__le16 fc); | |
1593 | ||
5d2cdcd4 EG |
1594 | /** |
1595 | * ieee80211_get_tkip_key - get a TKIP rc4 for skb | |
1596 | * | |
1597 | * This function computes a TKIP rc4 key for an skb. It computes | |
1598 | * a phase 1 key if needed (iv16 wraps around). This function is to | |
1599 | * be used by drivers which can do HW encryption but need to compute | |
1600 | * to phase 1/2 key in SW. | |
1601 | * | |
1602 | * @keyconf: the parameter passed with the set key | |
1603 | * @skb: the skb for which the key is needed | |
1604 | * @rc4key: a buffer to which the key will be written | |
6ef307bc RD |
1605 | * @type: TBD |
1606 | * @key: TBD | |
5d2cdcd4 EG |
1607 | */ |
1608 | void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, | |
1609 | struct sk_buff *skb, | |
1610 | enum ieee80211_tkip_key_type type, u8 *key); | |
f0706e82 JB |
1611 | /** |
1612 | * ieee80211_wake_queue - wake specific queue | |
1613 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1614 | * @queue: queue number (counted from zero). | |
1615 | * | |
1616 | * Drivers should use this function instead of netif_wake_queue. | |
1617 | */ | |
1618 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); | |
1619 | ||
1620 | /** | |
1621 | * ieee80211_stop_queue - stop specific queue | |
1622 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1623 | * @queue: queue number (counted from zero). | |
1624 | * | |
1625 | * Drivers should use this function instead of netif_stop_queue. | |
1626 | */ | |
1627 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); | |
1628 | ||
92ab8535 TW |
1629 | /** |
1630 | * ieee80211_queue_stopped - test status of the queue | |
1631 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1632 | * @queue: queue number (counted from zero). | |
1633 | * | |
1634 | * Drivers should use this function instead of netif_stop_queue. | |
1635 | */ | |
1636 | ||
1637 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); | |
1638 | ||
f0706e82 JB |
1639 | /** |
1640 | * ieee80211_stop_queues - stop all queues | |
1641 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1642 | * | |
1643 | * Drivers should use this function instead of netif_stop_queue. | |
1644 | */ | |
1645 | void ieee80211_stop_queues(struct ieee80211_hw *hw); | |
1646 | ||
1647 | /** | |
1648 | * ieee80211_wake_queues - wake all queues | |
1649 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1650 | * | |
1651 | * Drivers should use this function instead of netif_wake_queue. | |
1652 | */ | |
1653 | void ieee80211_wake_queues(struct ieee80211_hw *hw); | |
1654 | ||
75a5f0cc JB |
1655 | /** |
1656 | * ieee80211_scan_completed - completed hardware scan | |
1657 | * | |
1658 | * When hardware scan offload is used (i.e. the hw_scan() callback is | |
1659 | * assigned) this function needs to be called by the driver to notify | |
1660 | * mac80211 that the scan finished. | |
1661 | * | |
1662 | * @hw: the hardware that finished the scan | |
1663 | */ | |
f0706e82 JB |
1664 | void ieee80211_scan_completed(struct ieee80211_hw *hw); |
1665 | ||
dabeb344 | 1666 | /** |
6ef307bc | 1667 | * ieee80211_iterate_active_interfaces - iterate active interfaces |
dabeb344 JB |
1668 | * |
1669 | * This function iterates over the interfaces associated with a given | |
1670 | * hardware that are currently active and calls the callback for them. | |
2f561feb ID |
1671 | * This function allows the iterator function to sleep, when the iterator |
1672 | * function is atomic @ieee80211_iterate_active_interfaces_atomic can | |
1673 | * be used. | |
dabeb344 JB |
1674 | * |
1675 | * @hw: the hardware struct of which the interfaces should be iterated over | |
2f561feb | 1676 | * @iterator: the iterator function to call |
dabeb344 JB |
1677 | * @data: first argument of the iterator function |
1678 | */ | |
1679 | void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, | |
1680 | void (*iterator)(void *data, u8 *mac, | |
32bfd35d | 1681 | struct ieee80211_vif *vif), |
dabeb344 JB |
1682 | void *data); |
1683 | ||
2f561feb ID |
1684 | /** |
1685 | * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces | |
1686 | * | |
1687 | * This function iterates over the interfaces associated with a given | |
1688 | * hardware that are currently active and calls the callback for them. | |
1689 | * This function requires the iterator callback function to be atomic, | |
1690 | * if that is not desired, use @ieee80211_iterate_active_interfaces instead. | |
1691 | * | |
1692 | * @hw: the hardware struct of which the interfaces should be iterated over | |
1693 | * @iterator: the iterator function to call, cannot sleep | |
1694 | * @data: first argument of the iterator function | |
1695 | */ | |
1696 | void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, | |
1697 | void (*iterator)(void *data, | |
1698 | u8 *mac, | |
1699 | struct ieee80211_vif *vif), | |
1700 | void *data); | |
1701 | ||
0df3ef45 RR |
1702 | /** |
1703 | * ieee80211_start_tx_ba_session - Start a tx Block Ack session. | |
1704 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1705 | * @ra: receiver address of the BA session recipient | |
1706 | * @tid: the TID to BA on. | |
1707 | * @return: success if addBA request was sent, failure otherwise | |
1708 | * | |
1709 | * Although mac80211/low level driver/user space application can estimate | |
1710 | * the need to start aggregation on a certain RA/TID, the session level | |
1711 | * will be managed by the mac80211. | |
1712 | */ | |
1713 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid); | |
1714 | ||
1715 | /** | |
1716 | * ieee80211_start_tx_ba_cb - low level driver ready to aggregate. | |
1717 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1718 | * @ra: receiver address of the BA session recipient. | |
1719 | * @tid: the TID to BA on. | |
1720 | * | |
1721 | * This function must be called by low level driver once it has | |
1722 | * finished with preparations for the BA session. | |
1723 | */ | |
1724 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid); | |
1725 | ||
1726 | /** | |
1727 | * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. | |
1728 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1729 | * @ra: receiver address of the BA session recipient. | |
1730 | * @tid: the TID to BA on. | |
1731 | * | |
1732 | * This function must be called by low level driver once it has | |
1733 | * finished with preparations for the BA session. | |
6ef307bc | 1734 | * This version of the function is IRQ-safe. |
0df3ef45 RR |
1735 | */ |
1736 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, | |
1737 | u16 tid); | |
1738 | ||
1739 | /** | |
1740 | * ieee80211_stop_tx_ba_session - Stop a Block Ack session. | |
1741 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1742 | * @ra: receiver address of the BA session recipient | |
1743 | * @tid: the TID to stop BA. | |
1744 | * @initiator: if indicates initiator DELBA frame will be sent. | |
1745 | * @return: error if no sta with matching da found, success otherwise | |
1746 | * | |
1747 | * Although mac80211/low level driver/user space application can estimate | |
1748 | * the need to stop aggregation on a certain RA/TID, the session level | |
1749 | * will be managed by the mac80211. | |
1750 | */ | |
1751 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, | |
1752 | u8 *ra, u16 tid, | |
1753 | enum ieee80211_back_parties initiator); | |
1754 | ||
1755 | /** | |
1756 | * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate. | |
1757 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1758 | * @ra: receiver address of the BA session recipient. | |
1759 | * @tid: the desired TID to BA on. | |
1760 | * | |
1761 | * This function must be called by low level driver once it has | |
1762 | * finished with preparations for the BA session tear down. | |
1763 | */ | |
1764 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid); | |
1765 | ||
1766 | /** | |
1767 | * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. | |
1768 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
1769 | * @ra: receiver address of the BA session recipient. | |
1770 | * @tid: the desired TID to BA on. | |
1771 | * | |
1772 | * This function must be called by low level driver once it has | |
1773 | * finished with preparations for the BA session tear down. | |
6ef307bc | 1774 | * This version of the function is IRQ-safe. |
0df3ef45 RR |
1775 | */ |
1776 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, | |
1777 | u16 tid); | |
1778 | ||
84363e6e MA |
1779 | /** |
1780 | * ieee80211_notify_mac - low level driver notification | |
1781 | * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
6ef307bc | 1782 | * @notif_type: enum ieee80211_notification_types |
84363e6e MA |
1783 | * |
1784 | * This function must be called by low level driver to inform mac80211 of | |
1785 | * low level driver status change or force mac80211 to re-assoc for low | |
1786 | * level driver internal error that require re-assoc. | |
1787 | */ | |
1788 | void ieee80211_notify_mac(struct ieee80211_hw *hw, | |
1789 | enum ieee80211_notification_types notif_type); | |
17741cdc JB |
1790 | |
1791 | /** | |
1792 | * ieee80211_find_sta - find a station | |
1793 | * | |
1794 | * @hw: pointer as obtained from ieee80211_alloc_hw() | |
1795 | * @addr: station's address | |
1796 | * | |
1797 | * This function must be called under RCU lock and the | |
1798 | * resulting pointer is only valid under RCU lock as well. | |
1799 | */ | |
1800 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw, | |
1801 | const u8 *addr); | |
1802 | ||
4b7679a5 JB |
1803 | |
1804 | /* Rate control API */ | |
1805 | /** | |
1806 | * struct rate_selection - rate information for/from rate control algorithms | |
1807 | * | |
1808 | * @rate_idx: selected transmission rate index | |
1809 | * @nonerp_idx: Non-ERP rate to use instead if ERP cannot be used | |
1810 | * @probe_idx: rate for probing (or -1) | |
1811 | * @max_rate_idx: maximum rate index that can be used, this is | |
1812 | * input to the algorithm and will be enforced | |
1813 | */ | |
1814 | struct rate_selection { | |
1815 | s8 rate_idx, nonerp_idx, probe_idx, max_rate_idx; | |
1816 | }; | |
1817 | ||
1818 | struct rate_control_ops { | |
1819 | struct module *module; | |
1820 | const char *name; | |
1821 | void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); | |
1822 | void (*clear)(void *priv); | |
1823 | void (*free)(void *priv); | |
1824 | ||
1825 | void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); | |
1826 | void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, | |
1827 | struct ieee80211_sta *sta, void *priv_sta); | |
1828 | void (*free_sta)(void *priv, struct ieee80211_sta *sta, | |
1829 | void *priv_sta); | |
1830 | ||
1831 | void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, | |
1832 | struct ieee80211_sta *sta, void *priv_sta, | |
1833 | struct sk_buff *skb); | |
1834 | void (*get_rate)(void *priv, struct ieee80211_supported_band *sband, | |
1835 | struct ieee80211_sta *sta, void *priv_sta, | |
1836 | struct sk_buff *skb, | |
1837 | struct rate_selection *sel); | |
1838 | ||
1839 | void (*add_sta_debugfs)(void *priv, void *priv_sta, | |
1840 | struct dentry *dir); | |
1841 | void (*remove_sta_debugfs)(void *priv, void *priv_sta); | |
1842 | }; | |
1843 | ||
1844 | static inline int rate_supported(struct ieee80211_sta *sta, | |
1845 | enum ieee80211_band band, | |
1846 | int index) | |
1847 | { | |
1848 | return (sta == NULL || sta->supp_rates[band] & BIT(index)); | |
1849 | } | |
1850 | ||
1851 | static inline s8 | |
1852 | rate_lowest_index(struct ieee80211_supported_band *sband, | |
1853 | struct ieee80211_sta *sta) | |
1854 | { | |
1855 | int i; | |
1856 | ||
1857 | for (i = 0; i < sband->n_bitrates; i++) | |
1858 | if (rate_supported(sta, sband->band, i)) | |
1859 | return i; | |
1860 | ||
1861 | /* warn when we cannot find a rate. */ | |
1862 | WARN_ON(1); | |
1863 | ||
1864 | return 0; | |
1865 | } | |
1866 | ||
1867 | ||
1868 | int ieee80211_rate_control_register(struct rate_control_ops *ops); | |
1869 | void ieee80211_rate_control_unregister(struct rate_control_ops *ops); | |
1870 | ||
f0706e82 | 1871 | #endif /* MAC80211_H */ |