Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1 | /* |
Johannes Berg | 3017b80 | 2007-08-28 17:01:53 -0400 | [diff] [blame] | 2 | * mac80211 <-> driver interface |
| 3 | * |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 4 | * Copyright 2002-2005, Devicescape Software, Inc. |
| 5 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> |
Johannes Berg | 3017b80 | 2007-08-28 17:01:53 -0400 | [diff] [blame] | 6 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 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 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 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 |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 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 |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 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 |
| 45 | * use the non-irqsafe functions! |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 46 | */ |
| 47 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 48 | /** |
| 49 | * DOC: Warning |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 50 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 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 |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 57 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 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. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 74 | */ |
| 75 | |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 76 | /** |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 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 | |
| 84 | /** |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 85 | * struct ieee80211_ht_bss_info - describing BSS's HT characteristics |
| 86 | * |
| 87 | * This structure describes most essential parameters needed |
| 88 | * to describe 802.11n HT characteristics in a BSS |
| 89 | * |
| 90 | * @primary_channel: channel number of primery channel |
| 91 | * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width) |
| 92 | * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection) |
| 93 | */ |
| 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 | |
| 100 | /** |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 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 | |
| 112 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 113 | * struct ieee80211_tx_queue_params - transmit queue configuration |
| 114 | * |
| 115 | * The information provided in this structure is required for QoS |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 116 | * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 117 | * |
| 118 | * @aifs: arbitration interface space [0..255, -1: use default] |
| 119 | * @cw_min: minimum contention window [will be a value of the form |
| 120 | * 2^n-1 in the range 1..1023; 0: use default] |
| 121 | * @cw_max: maximum contention window [like @cw_min] |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 122 | * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 123 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 124 | struct ieee80211_tx_queue_params { |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 125 | s16 aifs; |
| 126 | u16 cw_min; |
| 127 | u16 cw_max; |
| 128 | u16 txop; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 129 | }; |
| 130 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 131 | /** |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 132 | * struct ieee80211_tx_queue_stats - transmit queue statistics |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 133 | * |
| 134 | * @len: number of packets in queue |
| 135 | * @limit: queue length limit |
| 136 | * @count: number of frames sent |
| 137 | */ |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 138 | struct ieee80211_tx_queue_stats { |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 139 | unsigned int len; |
| 140 | unsigned int limit; |
| 141 | unsigned int count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 142 | }; |
| 143 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 144 | struct ieee80211_low_level_stats { |
| 145 | unsigned int dot11ACKFailureCount; |
| 146 | unsigned int dot11RTSFailureCount; |
| 147 | unsigned int dot11FCSErrorCount; |
| 148 | unsigned int dot11RTSSuccessCount; |
| 149 | }; |
| 150 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 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 |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 161 | * @BSS_CHANGED_HT: 802.11n parameters changed |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 162 | */ |
| 163 | enum ieee80211_bss_change { |
| 164 | BSS_CHANGED_ASSOC = 1<<0, |
| 165 | BSS_CHANGED_ERP_CTS_PROT = 1<<1, |
| 166 | BSS_CHANGED_ERP_PREAMBLE = 1<<2, |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 167 | BSS_CHANGED_HT = 1<<4, |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 168 | }; |
| 169 | |
| 170 | /** |
| 171 | * struct ieee80211_bss_conf - holds the BSS's changing parameters |
| 172 | * |
| 173 | * This structure keeps information about a BSS (and an association |
| 174 | * to that BSS) that can change during the lifetime of the BSS. |
| 175 | * |
| 176 | * @assoc: association status |
| 177 | * @aid: association ID number, valid only when @assoc is true |
| 178 | * @use_cts_prot: use CTS protection |
| 179 | * @use_short_preamble: use 802.11b short preamble |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 180 | * @timestamp: beacon timestamp |
| 181 | * @beacon_int: beacon interval |
| 182 | * @assoc_capability: capabbilities taken from assoc resp |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 183 | * @assoc_ht: association in HT mode |
| 184 | * @ht_conf: ht capabilities |
| 185 | * @ht_bss_conf: ht extended capabilities |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 186 | */ |
| 187 | struct ieee80211_bss_conf { |
| 188 | /* association related data */ |
| 189 | bool assoc; |
| 190 | u16 aid; |
| 191 | /* erp related data */ |
| 192 | bool use_cts_prot; |
| 193 | bool use_short_preamble; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 194 | u16 beacon_int; |
| 195 | u16 assoc_capability; |
| 196 | u64 timestamp; |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 197 | /* ht related data */ |
| 198 | bool assoc_ht; |
| 199 | struct ieee80211_ht_info *ht_conf; |
| 200 | struct ieee80211_ht_bss_info *ht_bss_conf; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 201 | }; |
| 202 | |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 203 | /** |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 204 | * enum mac80211_tx_flags - flags to transmission information/status |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 205 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 206 | * These flags are used with the @flags member of &ieee80211_tx_info |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 207 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 208 | * @IEEE80211_TX_CTL_REQ_TX_STATUS: request TX status callback for this frame. |
| 209 | * @IEEE80211_TX_CTL_DO_NOT_ENCRYPT: send this frame without encryption; |
| 210 | * e.g., for EAPOL frame |
| 211 | * @IEEE80211_TX_CTL_USE_RTS_CTS: use RTS-CTS before sending frame |
| 212 | * @IEEE80211_TX_CTL_USE_CTS_PROTECT: use CTS protection for the frame (e.g., |
| 213 | * for combined 802.11g / 802.11b networks) |
| 214 | * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack |
| 215 | * @IEEE80211_TX_CTL_RATE_CTRL_PROBE |
| 216 | * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination |
| 217 | * station |
| 218 | * @IEEE80211_TX_CTL_REQUEUE: |
| 219 | * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame |
| 220 | * @IEEE80211_TX_CTL_LONG_RETRY_LIMIT: this frame should be send using the |
| 221 | * through set_retry_limit configured long retry value |
| 222 | * @IEEE80211_TX_CTL_EAPOL_FRAME: internal to mac80211 |
| 223 | * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon |
| 224 | * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU |
| 225 | * @IEEE80211_TX_CTL_OFDM_HT: this frame can be sent in HT OFDM rates. number |
| 226 | * of streams when this flag is on can be extracted from antenna_sel_tx, |
| 227 | * so if 1 antenna is marked use SISO, 2 antennas marked use MIMO, n |
| 228 | * antennas marked use MIMO_n. |
| 229 | * @IEEE80211_TX_CTL_GREEN_FIELD: use green field protection for this frame |
| 230 | * @IEEE80211_TX_CTL_40_MHZ_WIDTH: send this frame using 40 Mhz channel width |
| 231 | * @IEEE80211_TX_CTL_DUP_DATA: duplicate data frame on both 20 Mhz channels |
| 232 | * @IEEE80211_TX_CTL_SHORT_GI: send this frame using short guard interval |
| 233 | * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted |
| 234 | * because the destination STA was in powersave mode. |
| 235 | * @IEEE80211_TX_STAT_ACK: Frame was acknowledged |
| 236 | * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status |
| 237 | * is for the whole aggregation. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 238 | */ |
| 239 | enum mac80211_tx_control_flags { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 240 | IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), |
| 241 | IEEE80211_TX_CTL_DO_NOT_ENCRYPT = BIT(1), |
| 242 | IEEE80211_TX_CTL_USE_RTS_CTS = BIT(2), |
| 243 | IEEE80211_TX_CTL_USE_CTS_PROTECT = BIT(3), |
| 244 | IEEE80211_TX_CTL_NO_ACK = BIT(4), |
| 245 | IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(5), |
| 246 | IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(6), |
| 247 | IEEE80211_TX_CTL_REQUEUE = BIT(7), |
| 248 | IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(8), |
| 249 | IEEE80211_TX_CTL_SHORT_PREAMBLE = BIT(9), |
| 250 | IEEE80211_TX_CTL_LONG_RETRY_LIMIT = BIT(10), |
| 251 | IEEE80211_TX_CTL_EAPOL_FRAME = BIT(11), |
| 252 | IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(12), |
| 253 | IEEE80211_TX_CTL_AMPDU = BIT(13), |
| 254 | IEEE80211_TX_CTL_OFDM_HT = BIT(14), |
| 255 | IEEE80211_TX_CTL_GREEN_FIELD = BIT(15), |
| 256 | IEEE80211_TX_CTL_40_MHZ_WIDTH = BIT(16), |
| 257 | IEEE80211_TX_CTL_DUP_DATA = BIT(17), |
| 258 | IEEE80211_TX_CTL_SHORT_GI = BIT(18), |
| 259 | IEEE80211_TX_CTL_INJECTED = BIT(19), |
| 260 | IEEE80211_TX_STAT_TX_FILTERED = BIT(20), |
| 261 | IEEE80211_TX_STAT_ACK = BIT(21), |
| 262 | IEEE80211_TX_STAT_AMPDU = BIT(22), |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 263 | }; |
| 264 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 265 | |
| 266 | #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE \ |
| 267 | (sizeof(((struct sk_buff *)0)->cb) - 8) |
| 268 | #define IEEE80211_TX_INFO_DRIVER_DATA_PTRS \ |
| 269 | (IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)) |
| 270 | |
| 271 | /** |
| 272 | * struct ieee80211_tx_info - skb transmit information |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 273 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 274 | * This structure is placed in skb->cb for three uses: |
| 275 | * (1) mac80211 TX control - mac80211 tells the driver what to do |
| 276 | * (2) driver internal use (if applicable) |
| 277 | * (3) TX status information - driver tells mac80211 what happened |
| 278 | * |
| 279 | * @flags: transmit info flags, defined above |
| 280 | * @retry_count: number of retries |
| 281 | * @excessive_retries: set to 1 if the frame was retried many times |
| 282 | * but not acknowledged |
| 283 | * @ampdu_ack_len: number of aggregated frames. |
| 284 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. |
| 285 | * @ampdu_ack_map: block ack bit map for the aggregation. |
| 286 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. |
| 287 | * @ack_signal: signal strength of the ACK frame |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 288 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 289 | struct ieee80211_tx_info { |
| 290 | /* common information */ |
| 291 | u32 flags; |
| 292 | u8 band; |
| 293 | s8 tx_rate_idx; |
| 294 | u8 antenna_sel_tx; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 295 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 296 | /* 1 byte hole */ |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 297 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 298 | union { |
| 299 | struct { |
| 300 | struct ieee80211_vif *vif; |
| 301 | struct ieee80211_key_conf *hw_key; |
| 302 | unsigned long jiffies; |
| 303 | int ifindex; |
| 304 | u16 aid; |
| 305 | s8 rts_cts_rate_idx, alt_retry_rate_idx; |
| 306 | u8 retry_limit; |
| 307 | u8 icv_len; |
| 308 | u8 iv_len; |
| 309 | } control; |
| 310 | struct { |
| 311 | u64 ampdu_ack_map; |
| 312 | int ack_signal; |
| 313 | u8 retry_count; |
| 314 | bool excessive_retries; |
| 315 | u8 ampdu_ack_len; |
| 316 | } status; |
| 317 | void *driver_data[IEEE80211_TX_INFO_DRIVER_DATA_PTRS]; |
| 318 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 319 | }; |
| 320 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 321 | static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) |
| 322 | { |
| 323 | return (struct ieee80211_tx_info *)skb->cb; |
| 324 | } |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 325 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 326 | |
| 327 | /** |
| 328 | * enum mac80211_rx_flags - receive flags |
| 329 | * |
| 330 | * These flags are used with the @flag member of &struct ieee80211_rx_status. |
| 331 | * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. |
| 332 | * Use together with %RX_FLAG_MMIC_STRIPPED. |
| 333 | * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. |
| 334 | * @RX_FLAG_RADIOTAP: This frame starts with a radiotap header. |
| 335 | * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, |
| 336 | * verification has been done by the hardware. |
| 337 | * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. |
| 338 | * If this flag is set, the stack cannot do any replay detection |
| 339 | * hence the driver or hardware will have to do that. |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 340 | * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on |
| 341 | * the frame. |
| 342 | * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on |
| 343 | * the frame. |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 344 | * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 345 | * is valid. This is useful in monitor mode and necessary for beacon frames |
| 346 | * to enable IBSS merging. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 347 | */ |
| 348 | enum mac80211_rx_flags { |
| 349 | RX_FLAG_MMIC_ERROR = 1<<0, |
| 350 | RX_FLAG_DECRYPTED = 1<<1, |
| 351 | RX_FLAG_RADIOTAP = 1<<2, |
| 352 | RX_FLAG_MMIC_STRIPPED = 1<<3, |
| 353 | RX_FLAG_IV_STRIPPED = 1<<4, |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 354 | RX_FLAG_FAILED_FCS_CRC = 1<<5, |
| 355 | RX_FLAG_FAILED_PLCP_CRC = 1<<6, |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 356 | RX_FLAG_TSFT = 1<<7, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 357 | }; |
| 358 | |
| 359 | /** |
| 360 | * struct ieee80211_rx_status - receive status |
| 361 | * |
| 362 | * The low-level driver should provide this information (the subset |
| 363 | * supported by hardware) to the 802.11 code with each received |
| 364 | * frame. |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 365 | * |
Bruno Randolf | c132bec | 2008-02-18 11:20:51 +0900 | [diff] [blame] | 366 | * @mactime: value in microseconds of the 64-bit Time Synchronization Function |
| 367 | * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 368 | * @band: the active band when this frame was received |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 369 | * @freq: frequency the radio was tuned to when receiving this frame, in MHz |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 370 | * @signal: signal strength when receiving this frame, either in dBm, in dB or |
| 371 | * unspecified depending on the hardware capabilities flags |
| 372 | * @IEEE80211_HW_SIGNAL_* |
| 373 | * @noise: noise when receiving this frame, in dBm. |
| 374 | * @qual: overall signal quality indication, in percent (0-100). |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 375 | * @antenna: antenna used |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 376 | * @rate_idx: index of data rate into band's supported rates |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 377 | * @flag: %RX_FLAG_* |
| 378 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 379 | struct ieee80211_rx_status { |
| 380 | u64 mactime; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 381 | enum ieee80211_band band; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 382 | int freq; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 383 | int signal; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 384 | int noise; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 385 | int qual; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 386 | int antenna; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 387 | int rate_idx; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 388 | int flag; |
| 389 | }; |
| 390 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 391 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 392 | * enum ieee80211_conf_flags - configuration flags |
| 393 | * |
| 394 | * Flags to define PHY configuration options |
| 395 | * |
| 396 | * @IEEE80211_CONF_SHORT_SLOT_TIME: use 802.11g short slot time |
| 397 | * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported) |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 398 | * @IEEE80211_CONF_SUPPORT_HT_MODE: use 802.11n HT capabilities (if supported) |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 399 | */ |
| 400 | enum ieee80211_conf_flags { |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 401 | IEEE80211_CONF_SHORT_SLOT_TIME = (1<<0), |
| 402 | IEEE80211_CONF_RADIOTAP = (1<<1), |
| 403 | IEEE80211_CONF_SUPPORT_HT_MODE = (1<<2), |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 404 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 405 | |
| 406 | /** |
| 407 | * struct ieee80211_conf - configuration of the device |
| 408 | * |
| 409 | * This struct indicates how the driver shall configure the hardware. |
| 410 | * |
| 411 | * @radio_enabled: when zero, driver is required to switch off the radio. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 412 | * TODO make a flag |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 413 | * @beacon_int: beacon interval (TODO make interface config) |
| 414 | * @flags: configuration flags defined above |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 415 | * @power_level: requested transmit power (in dBm) |
| 416 | * @max_antenna_gain: maximum antenna gain (in dBi) |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 417 | * @antenna_sel_tx: transmit antenna selection, 0: default/diversity, |
| 418 | * 1/2: antenna 0/1 |
| 419 | * @antenna_sel_rx: receive antenna selection, like @antenna_sel_tx |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 420 | * @ht_conf: describes current self configuration of 802.11n HT capabilies |
| 421 | * @ht_bss_conf: describes current BSS configuration of 802.11n HT parameters |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 422 | * @channel: the channel to tune to |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 423 | */ |
| 424 | struct ieee80211_conf { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 425 | int radio_enabled; |
| 426 | |
| 427 | int beacon_int; |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 428 | u32 flags; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 429 | int power_level; |
| 430 | int max_antenna_gain; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 431 | u8 antenna_sel_tx; |
| 432 | u8 antenna_sel_rx; |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 433 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 434 | struct ieee80211_channel *channel; |
| 435 | |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 436 | struct ieee80211_ht_info ht_conf; |
| 437 | struct ieee80211_ht_bss_info ht_bss_conf; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 438 | }; |
| 439 | |
| 440 | /** |
| 441 | * enum ieee80211_if_types - types of 802.11 network interfaces |
| 442 | * |
Johannes Berg | a289755 | 2007-09-28 14:01:25 +0200 | [diff] [blame] | 443 | * @IEEE80211_IF_TYPE_INVALID: invalid interface type, not used |
| 444 | * by mac80211 itself |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 445 | * @IEEE80211_IF_TYPE_AP: interface in AP mode. |
| 446 | * @IEEE80211_IF_TYPE_MGMT: special interface for communication with hostap |
| 447 | * daemon. Drivers should never see this type. |
| 448 | * @IEEE80211_IF_TYPE_STA: interface in STA (client) mode. |
| 449 | * @IEEE80211_IF_TYPE_IBSS: interface in IBSS (ad-hoc) mode. |
| 450 | * @IEEE80211_IF_TYPE_MNTR: interface in monitor (rfmon) mode. |
| 451 | * @IEEE80211_IF_TYPE_WDS: interface in WDS mode. |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 452 | * @IEEE80211_IF_TYPE_VLAN: VLAN interface bound to an AP, drivers |
| 453 | * will never see this type. |
Johannes Berg | dbbea67 | 2008-02-26 14:34:06 +0100 | [diff] [blame] | 454 | * @IEEE80211_IF_TYPE_MESH_POINT: 802.11s mesh point |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 455 | */ |
| 456 | enum ieee80211_if_types { |
Johannes Berg | a289755 | 2007-09-28 14:01:25 +0200 | [diff] [blame] | 457 | IEEE80211_IF_TYPE_INVALID, |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 458 | IEEE80211_IF_TYPE_AP, |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 459 | IEEE80211_IF_TYPE_STA, |
| 460 | IEEE80211_IF_TYPE_IBSS, |
Johannes Berg | 6032f93 | 2008-02-23 15:17:07 +0100 | [diff] [blame] | 461 | IEEE80211_IF_TYPE_MESH_POINT, |
Johannes Berg | 0ec3ca4 | 2007-09-17 01:29:24 -0400 | [diff] [blame] | 462 | IEEE80211_IF_TYPE_MNTR, |
| 463 | IEEE80211_IF_TYPE_WDS, |
| 464 | IEEE80211_IF_TYPE_VLAN, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 465 | }; |
| 466 | |
| 467 | /** |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 468 | * struct ieee80211_vif - per-interface data |
| 469 | * |
| 470 | * Data in this structure is continually present for driver |
| 471 | * use during the life of a virtual interface. |
| 472 | * |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 473 | * @type: type of this virtual interface |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 474 | * @drv_priv: data area for driver use, will always be aligned to |
| 475 | * sizeof(void *). |
| 476 | */ |
| 477 | struct ieee80211_vif { |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 478 | enum ieee80211_if_types type; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 479 | /* must be last */ |
| 480 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 481 | }; |
| 482 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 483 | static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) |
| 484 | { |
| 485 | #ifdef CONFIG_MAC80211_MESH |
| 486 | return vif->type == IEEE80211_IF_TYPE_MESH_POINT; |
| 487 | #endif |
| 488 | return false; |
| 489 | } |
| 490 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 491 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 492 | * struct ieee80211_if_init_conf - initial configuration of an interface |
| 493 | * |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 494 | * @vif: pointer to a driver-use per-interface structure. The pointer |
| 495 | * itself is also used for various functions including |
| 496 | * ieee80211_beacon_get() and ieee80211_get_buffered_bc(). |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 497 | * @type: one of &enum ieee80211_if_types constants. Determines the type of |
| 498 | * added/removed interface. |
| 499 | * @mac_addr: pointer to MAC address of the interface. This pointer is valid |
| 500 | * until the interface is removed (i.e. it cannot be used after |
| 501 | * remove_interface() callback was called for this interface). |
| 502 | * |
| 503 | * This structure is used in add_interface() and remove_interface() |
| 504 | * callbacks of &struct ieee80211_hw. |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 505 | * |
| 506 | * When you allow multiple interfaces to be added to your PHY, take care |
| 507 | * that the hardware can actually handle multiple MAC addresses. However, |
| 508 | * also take care that when there's no interface left with mac_addr != %NULL |
| 509 | * you remove the MAC address from the device to avoid acknowledging packets |
| 510 | * in pure monitor mode. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 511 | */ |
| 512 | struct ieee80211_if_init_conf { |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 513 | enum ieee80211_if_types type; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 514 | struct ieee80211_vif *vif; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 515 | void *mac_addr; |
| 516 | }; |
| 517 | |
| 518 | /** |
| 519 | * struct ieee80211_if_conf - configuration of an interface |
| 520 | * |
| 521 | * @type: type of the interface. This is always the same as was specified in |
| 522 | * &struct ieee80211_if_init_conf. The type of an interface never changes |
| 523 | * during the life of the interface; this field is present only for |
| 524 | * convenience. |
| 525 | * @bssid: BSSID of the network we are associated to/creating. |
| 526 | * @ssid: used (together with @ssid_len) by drivers for hardware that |
| 527 | * generate beacons independently. The pointer is valid only during the |
| 528 | * config_interface() call, so copy the value somewhere if you need |
| 529 | * it. |
| 530 | * @ssid_len: length of the @ssid field. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 531 | * @beacon: beacon template. Valid only if @host_gen_beacon_template in |
| 532 | * &struct ieee80211_hw is set. The driver is responsible of freeing |
| 533 | * the sk_buff. |
| 534 | * @beacon_control: tx_control for the beacon template, this field is only |
| 535 | * valid when the @beacon field was set. |
| 536 | * |
| 537 | * This structure is passed to the config_interface() callback of |
| 538 | * &struct ieee80211_hw. |
| 539 | */ |
| 540 | struct ieee80211_if_conf { |
| 541 | int type; |
| 542 | u8 *bssid; |
| 543 | u8 *ssid; |
| 544 | size_t ssid_len; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 545 | struct sk_buff *beacon; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 546 | }; |
| 547 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 548 | /** |
| 549 | * enum ieee80211_key_alg - key algorithm |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 550 | * @ALG_WEP: WEP40 or WEP104 |
| 551 | * @ALG_TKIP: TKIP |
| 552 | * @ALG_CCMP: CCMP (AES) |
| 553 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 554 | enum ieee80211_key_alg { |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 555 | ALG_WEP, |
| 556 | ALG_TKIP, |
| 557 | ALG_CCMP, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 558 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 559 | |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 560 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 561 | /** |
| 562 | * enum ieee80211_key_flags - key flags |
| 563 | * |
| 564 | * These flags are used for communication about keys between the driver |
| 565 | * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. |
| 566 | * |
| 567 | * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates |
| 568 | * that the STA this key will be used with could be using QoS. |
| 569 | * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the |
| 570 | * driver to indicate that it requires IV generation for this |
| 571 | * particular key. |
| 572 | * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by |
| 573 | * the driver for a TKIP key if it requires Michael MIC |
| 574 | * generation in software. |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 575 | * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates |
| 576 | * that the key is pairwise rather then a shared key. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 577 | */ |
| 578 | enum ieee80211_key_flags { |
| 579 | IEEE80211_KEY_FLAG_WMM_STA = 1<<0, |
| 580 | IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, |
| 581 | IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 582 | IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 583 | }; |
| 584 | |
| 585 | /** |
| 586 | * struct ieee80211_key_conf - key information |
| 587 | * |
| 588 | * This key information is given by mac80211 to the driver by |
| 589 | * the set_key() callback in &struct ieee80211_ops. |
| 590 | * |
| 591 | * @hw_key_idx: To be set by the driver, this is the key index the driver |
| 592 | * wants to be given when a frame is transmitted and needs to be |
Johannes Berg | 6a7664d | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 593 | * encrypted in hardware. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 594 | * @alg: The key algorithm. |
| 595 | * @flags: key flags, see &enum ieee80211_key_flags. |
| 596 | * @keyidx: the key index (0-3) |
| 597 | * @keylen: key material length |
Luis R. Rodriguez | ffd7891 | 2008-06-21 10:02:46 -0400 | [diff] [blame] | 598 | * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) |
| 599 | * data block: |
| 600 | * - Temporal Encryption Key (128 bits) |
| 601 | * - Temporal Authenticator Tx MIC Key (64 bits) |
| 602 | * - Temporal Authenticator Rx MIC Key (64 bits) |
| 603 | * |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 604 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 605 | struct ieee80211_key_conf { |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 606 | enum ieee80211_key_alg alg; |
Johannes Berg | 6a7664d | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 607 | u8 hw_key_idx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 608 | u8 flags; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 609 | s8 keyidx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 610 | u8 keylen; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 611 | u8 key[0]; |
| 612 | }; |
| 613 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 614 | /** |
| 615 | * enum set_key_cmd - key command |
| 616 | * |
| 617 | * Used with the set_key() callback in &struct ieee80211_ops, this |
| 618 | * indicates whether a key is being removed or added. |
| 619 | * |
| 620 | * @SET_KEY: a key is set |
| 621 | * @DISABLE_KEY: a key must be disabled |
| 622 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 623 | enum set_key_cmd { |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 624 | SET_KEY, DISABLE_KEY, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 625 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 626 | |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 627 | /** |
| 628 | * enum sta_notify_cmd - sta notify command |
| 629 | * |
| 630 | * Used with the sta_notify() callback in &struct ieee80211_ops, this |
| 631 | * indicates addition and removal of a station to station table |
| 632 | * |
| 633 | * @STA_NOTIFY_ADD: a station was added to the station table |
| 634 | * @STA_NOTIFY_REMOVE: a station being removed from the station table |
| 635 | */ |
| 636 | enum sta_notify_cmd { |
| 637 | STA_NOTIFY_ADD, STA_NOTIFY_REMOVE |
| 638 | }; |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 639 | |
| 640 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 641 | * enum ieee80211_tkip_key_type - get tkip key |
| 642 | * |
| 643 | * Used by drivers which need to get a tkip key for skb. Some drivers need a |
| 644 | * phase 1 key, others need a phase 2 key. A single function allows the driver |
| 645 | * to get the key, this enum indicates what type of key is required. |
| 646 | * |
| 647 | * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key |
| 648 | * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key |
| 649 | */ |
| 650 | enum ieee80211_tkip_key_type { |
| 651 | IEEE80211_TKIP_P1_KEY, |
| 652 | IEEE80211_TKIP_P2_KEY, |
| 653 | }; |
| 654 | |
| 655 | /** |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 656 | * enum ieee80211_hw_flags - hardware flags |
| 657 | * |
| 658 | * These flags are used to indicate hardware capabilities to |
| 659 | * the stack. Generally, flags here should have their meaning |
| 660 | * done in a way that the simplest hardware doesn't need setting |
| 661 | * any particular flags. There are some exceptions to this rule, |
| 662 | * however, so you are advised to review these flags carefully. |
| 663 | * |
| 664 | * @IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE: |
| 665 | * The device only needs to be supplied with a beacon template. |
| 666 | * If you need the host to generate each beacon then don't use |
| 667 | * this flag and call ieee80211_beacon_get() when you need the |
| 668 | * next beacon frame. Note that if you set this flag, you must |
| 669 | * implement the set_tim() callback for powersave mode to work |
| 670 | * properly. |
| 671 | * This flag is only relevant for access-point mode. |
| 672 | * |
| 673 | * @IEEE80211_HW_RX_INCLUDES_FCS: |
| 674 | * Indicates that received frames passed to the stack include |
| 675 | * the FCS at the end. |
| 676 | * |
| 677 | * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: |
| 678 | * Some wireless LAN chipsets buffer broadcast/multicast frames |
| 679 | * for power saving stations in the hardware/firmware and others |
| 680 | * rely on the host system for such buffering. This option is used |
| 681 | * to configure the IEEE 802.11 upper layer to buffer broadcast and |
| 682 | * multicast frames when there are power saving stations so that |
| 683 | * the driver can fetch them with ieee80211_get_buffered_bc(). Note |
| 684 | * that not setting this flag works properly only when the |
| 685 | * %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is also not set because |
| 686 | * otherwise the stack will not know when the DTIM beacon was sent. |
| 687 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 688 | * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: |
| 689 | * Hardware is not capable of short slot operation on the 2.4 GHz band. |
| 690 | * |
| 691 | * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: |
| 692 | * Hardware is not capable of receiving frames with short preamble on |
| 693 | * the 2.4 GHz band. |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 694 | * |
| 695 | * @IEEE80211_HW_SIGNAL_UNSPEC: |
| 696 | * Hardware can provide signal values but we don't know its units. We |
| 697 | * expect values between 0 and @max_signal. |
| 698 | * If possible please provide dB or dBm instead. |
| 699 | * |
| 700 | * @IEEE80211_HW_SIGNAL_DB: |
| 701 | * Hardware gives signal values in dB, decibel difference from an |
| 702 | * arbitrary, fixed reference. We expect values between 0 and @max_signal. |
| 703 | * If possible please provide dBm instead. |
| 704 | * |
| 705 | * @IEEE80211_HW_SIGNAL_DBM: |
| 706 | * Hardware gives signal values in dBm, decibel difference from |
| 707 | * one milliwatt. This is the preferred method since it is standardized |
| 708 | * between different devices. @max_signal does not need to be set. |
| 709 | * |
| 710 | * @IEEE80211_HW_NOISE_DBM: |
| 711 | * Hardware can provide noise (radio interference) values in units dBm, |
| 712 | * decibel difference from one milliwatt. |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 713 | */ |
| 714 | enum ieee80211_hw_flags { |
| 715 | IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE = 1<<0, |
| 716 | IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, |
| 717 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 718 | IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, |
| 719 | IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 720 | IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, |
| 721 | IEEE80211_HW_SIGNAL_DB = 1<<6, |
| 722 | IEEE80211_HW_SIGNAL_DBM = 1<<7, |
| 723 | IEEE80211_HW_NOISE_DBM = 1<<8, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 724 | }; |
| 725 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 726 | /** |
| 727 | * struct ieee80211_hw - hardware information and state |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 728 | * |
| 729 | * This structure contains the configuration and hardware |
| 730 | * information for an 802.11 PHY. |
| 731 | * |
| 732 | * @wiphy: This points to the &struct wiphy allocated for this |
| 733 | * 802.11 PHY. You must fill in the @perm_addr and @dev |
| 734 | * members of this structure using SET_IEEE80211_DEV() |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 735 | * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported |
| 736 | * bands (with channels, bitrates) are registered here. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 737 | * |
| 738 | * @conf: &struct ieee80211_conf, device configuration, don't use. |
| 739 | * |
| 740 | * @workqueue: single threaded workqueue available for driver use, |
Ivo van Doorn | 428da76 | 2008-06-24 19:23:36 +0200 | [diff] [blame] | 741 | * allocated by mac80211 on registration and flushed when an |
| 742 | * interface is removed. |
| 743 | * NOTICE: All work performed on this workqueue should NEVER |
| 744 | * acquire the RTNL lock (i.e. Don't use the function |
| 745 | * ieee80211_iterate_active_interfaces()) |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 746 | * |
| 747 | * @priv: pointer to private area that was allocated for driver use |
| 748 | * along with this structure. |
| 749 | * |
| 750 | * @flags: hardware flags, see &enum ieee80211_hw_flags. |
| 751 | * |
| 752 | * @extra_tx_headroom: headroom to reserve in each transmit skb |
| 753 | * for use by the driver (e.g. for transmit headers.) |
| 754 | * |
| 755 | * @channel_change_time: time (in microseconds) it takes to change channels. |
| 756 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 757 | * @max_signal: Maximum value for signal (rssi) in RX information, used |
| 758 | * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 759 | * |
| 760 | * @queues: number of available hardware transmit queues for |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 761 | * data packets. WMM/QoS requires at least four, these |
| 762 | * queues need to have configurable access parameters. |
| 763 | * |
| 764 | * @ampdu_queues: number of available hardware transmit queues |
| 765 | * for A-MPDU packets, these have no access parameters |
| 766 | * because they're used only for A-MPDU frames. Note that |
| 767 | * mac80211 will not currently use any of the regular queues |
| 768 | * for aggregation. |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 769 | * |
| 770 | * @rate_control_algorithm: rate control algorithm for this hardware. |
| 771 | * If unset (NULL), the default algorithm will be used. Must be |
| 772 | * set before calling ieee80211_register_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 773 | * |
| 774 | * @vif_data_size: size (in bytes) of the drv_priv data area |
| 775 | * within &struct ieee80211_vif. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 776 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 777 | struct ieee80211_hw { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 778 | struct ieee80211_conf conf; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 779 | struct wiphy *wiphy; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 780 | struct workqueue_struct *workqueue; |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 781 | const char *rate_control_algorithm; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 782 | void *priv; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 783 | u32 flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 784 | unsigned int extra_tx_headroom; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 785 | int channel_change_time; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 786 | int vif_data_size; |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 787 | u16 queues, ampdu_queues; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 788 | s8 max_signal; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 789 | }; |
| 790 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 791 | /** |
| 792 | * SET_IEEE80211_DEV - set device for 802.11 hardware |
| 793 | * |
| 794 | * @hw: the &struct ieee80211_hw to set the device for |
| 795 | * @dev: the &struct device of this 802.11 device |
| 796 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 797 | static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) |
| 798 | { |
| 799 | set_wiphy_dev(hw->wiphy, dev); |
| 800 | } |
| 801 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 802 | /** |
| 803 | * SET_IEEE80211_PERM_ADDR - set the permanenet MAC address for 802.11 hardware |
| 804 | * |
| 805 | * @hw: the &struct ieee80211_hw to set the MAC address for |
| 806 | * @addr: the address to set |
| 807 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 808 | static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) |
| 809 | { |
| 810 | memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); |
| 811 | } |
| 812 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 813 | static inline int ieee80211_num_regular_queues(struct ieee80211_hw *hw) |
| 814 | { |
| 815 | #ifdef CONFIG_MAC80211_QOS |
| 816 | return hw->queues; |
| 817 | #else |
| 818 | return 1; |
| 819 | #endif |
| 820 | } |
| 821 | |
| 822 | static inline int ieee80211_num_queues(struct ieee80211_hw *hw) |
| 823 | { |
| 824 | #ifdef CONFIG_MAC80211_QOS |
| 825 | return hw->queues + hw->ampdu_queues; |
| 826 | #else |
| 827 | return 1; |
| 828 | #endif |
| 829 | } |
| 830 | |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 831 | static inline struct ieee80211_rate * |
| 832 | ieee80211_get_tx_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 833 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 834 | { |
| 835 | if (WARN_ON(c->tx_rate_idx < 0)) |
| 836 | return NULL; |
| 837 | return &hw->wiphy->bands[c->band]->bitrates[c->tx_rate_idx]; |
| 838 | } |
| 839 | |
| 840 | static inline struct ieee80211_rate * |
| 841 | ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 842 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 843 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 844 | if (c->control.rts_cts_rate_idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 845 | return NULL; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 846 | return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | static inline struct ieee80211_rate * |
| 850 | ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 851 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 852 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 853 | if (c->control.alt_retry_rate_idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 854 | return NULL; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 855 | return &hw->wiphy->bands[c->band]->bitrates[c->control.alt_retry_rate_idx]; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 856 | } |
| 857 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 858 | /** |
| 859 | * DOC: Hardware crypto acceleration |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 860 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 861 | * mac80211 is capable of taking advantage of many hardware |
| 862 | * acceleration designs for encryption and decryption operations. |
| 863 | * |
| 864 | * The set_key() callback in the &struct ieee80211_ops for a given |
| 865 | * device is called to enable hardware acceleration of encryption and |
| 866 | * decryption. The callback takes an @address parameter that will be |
| 867 | * the broadcast address for default keys, the other station's hardware |
| 868 | * address for individual keys or the zero address for keys that will |
| 869 | * be used only for transmission. |
| 870 | * Multiple transmission keys with the same key index may be used when |
| 871 | * VLANs are configured for an access point. |
| 872 | * |
| 873 | * The @local_address parameter will always be set to our own address, |
| 874 | * this is only relevant if you support multiple local addresses. |
| 875 | * |
| 876 | * When transmitting, the TX control data will use the @hw_key_idx |
| 877 | * selected by the driver by modifying the &struct ieee80211_key_conf |
| 878 | * pointed to by the @key parameter to the set_key() function. |
| 879 | * |
| 880 | * The set_key() call for the %SET_KEY command should return 0 if |
| 881 | * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be |
| 882 | * added; if you return 0 then hw_key_idx must be assigned to the |
| 883 | * hardware key index, you are free to use the full u8 range. |
| 884 | * |
| 885 | * When the cmd is %DISABLE_KEY then it must succeed. |
| 886 | * |
| 887 | * Note that it is permissible to not decrypt a frame even if a key |
| 888 | * for it has been uploaded to hardware, the stack will not make any |
| 889 | * decision based on whether a key has been uploaded or not but rather |
| 890 | * based on the receive flags. |
| 891 | * |
| 892 | * The &struct ieee80211_key_conf structure pointed to by the @key |
| 893 | * parameter is guaranteed to be valid until another call to set_key() |
| 894 | * removes it, but it can only be used as a cookie to differentiate |
| 895 | * keys. |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 896 | * |
| 897 | * In TKIP some HW need to be provided a phase 1 key, for RX decryption |
| 898 | * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key |
| 899 | * handler. |
| 900 | * The update_tkip_key() call updates the driver with the new phase 1 key. |
| 901 | * This happens everytime the iv16 wraps around (every 65536 packets). The |
| 902 | * set_key() call will happen only once for each key (unless the AP did |
| 903 | * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is |
| 904 | * provided by udpate_tkip_key only. The trigger that makes mac80211 call this |
| 905 | * handler is software decryption with wrap around of iv16. |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 906 | */ |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 907 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 908 | /** |
| 909 | * DOC: Frame filtering |
| 910 | * |
| 911 | * mac80211 requires to see many management frames for proper |
| 912 | * operation, and users may want to see many more frames when |
| 913 | * in monitor mode. However, for best CPU usage and power consumption, |
| 914 | * having as few frames as possible percolate through the stack is |
| 915 | * desirable. Hence, the hardware should filter as much as possible. |
| 916 | * |
| 917 | * To achieve this, mac80211 uses filter flags (see below) to tell |
| 918 | * the driver's configure_filter() function which frames should be |
| 919 | * passed to mac80211 and which should be filtered out. |
| 920 | * |
| 921 | * The configure_filter() callback is invoked with the parameters |
| 922 | * @mc_count and @mc_list for the combined multicast address list |
| 923 | * of all virtual interfaces, @changed_flags telling which flags |
| 924 | * were changed and @total_flags with the new flag states. |
| 925 | * |
| 926 | * If your device has no multicast address filters your driver will |
| 927 | * need to check both the %FIF_ALLMULTI flag and the @mc_count |
| 928 | * parameter to see whether multicast frames should be accepted |
| 929 | * or dropped. |
| 930 | * |
Michael Buesch | d0f5afb | 2008-02-12 20:12:45 +0100 | [diff] [blame] | 931 | * All unsupported flags in @total_flags must be cleared. |
| 932 | * Hardware does not support a flag if it is incapable of _passing_ |
| 933 | * the frame to the stack. Otherwise the driver must ignore |
| 934 | * the flag, but not clear it. |
| 935 | * You must _only_ clear the flag (announce no support for the |
| 936 | * flag to mac80211) if you are not able to pass the packet type |
| 937 | * to the stack (so the hardware always filters it). |
| 938 | * So for example, you should clear @FIF_CONTROL, if your hardware |
| 939 | * always filters control frames. If your hardware always passes |
| 940 | * control frames to the kernel and is incapable of filtering them, |
| 941 | * you do _not_ clear the @FIF_CONTROL flag. |
| 942 | * This rule applies to all other FIF flags as well. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 943 | */ |
| 944 | |
| 945 | /** |
| 946 | * enum ieee80211_filter_flags - hardware filter flags |
| 947 | * |
| 948 | * These flags determine what the filter in hardware should be |
| 949 | * programmed to let through and what should not be passed to the |
| 950 | * stack. It is always safe to pass more frames than requested, |
| 951 | * but this has negative impact on power consumption. |
| 952 | * |
| 953 | * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, |
| 954 | * think of the BSS as your network segment and then this corresponds |
| 955 | * to the regular ethernet device promiscuous mode. |
| 956 | * |
| 957 | * @FIF_ALLMULTI: pass all multicast frames, this is used if requested |
| 958 | * by the user or if the hardware is not capable of filtering by |
| 959 | * multicast address. |
| 960 | * |
| 961 | * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the |
| 962 | * %RX_FLAG_FAILED_FCS_CRC for them) |
| 963 | * |
| 964 | * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set |
| 965 | * the %RX_FLAG_FAILED_PLCP_CRC for them |
| 966 | * |
| 967 | * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate |
| 968 | * to the hardware that it should not filter beacons or probe responses |
| 969 | * by BSSID. Filtering them can greatly reduce the amount of processing |
| 970 | * mac80211 needs to do and the amount of CPU wakeups, so you should |
| 971 | * honour this flag if possible. |
| 972 | * |
| 973 | * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then |
| 974 | * only those addressed to this station |
| 975 | * |
| 976 | * @FIF_OTHER_BSS: pass frames destined to other BSSes |
| 977 | */ |
| 978 | enum ieee80211_filter_flags { |
| 979 | FIF_PROMISC_IN_BSS = 1<<0, |
| 980 | FIF_ALLMULTI = 1<<1, |
| 981 | FIF_FCSFAIL = 1<<2, |
| 982 | FIF_PLCPFAIL = 1<<3, |
| 983 | FIF_BCN_PRBRESP_PROMISC = 1<<4, |
| 984 | FIF_CONTROL = 1<<5, |
| 985 | FIF_OTHER_BSS = 1<<6, |
| 986 | }; |
| 987 | |
| 988 | /** |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 989 | * enum ieee80211_ampdu_mlme_action - A-MPDU actions |
| 990 | * |
| 991 | * These flags are used with the ampdu_action() callback in |
| 992 | * &struct ieee80211_ops to indicate which action is needed. |
| 993 | * @IEEE80211_AMPDU_RX_START: start Rx aggregation |
| 994 | * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 995 | * @IEEE80211_AMPDU_TX_START: start Tx aggregation |
| 996 | * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 997 | */ |
| 998 | enum ieee80211_ampdu_mlme_action { |
| 999 | IEEE80211_AMPDU_RX_START, |
| 1000 | IEEE80211_AMPDU_RX_STOP, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1001 | IEEE80211_AMPDU_TX_START, |
| 1002 | IEEE80211_AMPDU_TX_STOP, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1003 | }; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1004 | |
| 1005 | /** |
| 1006 | * struct ieee80211_ops - callbacks from mac80211 to the driver |
| 1007 | * |
| 1008 | * This structure contains various callbacks that the driver may |
| 1009 | * handle or, in some cases, must handle, for example to configure |
| 1010 | * the hardware to a new channel or to transmit a frame. |
| 1011 | * |
| 1012 | * @tx: Handler that 802.11 module calls for each transmitted frame. |
| 1013 | * skb contains the buffer starting from the IEEE 802.11 header. |
| 1014 | * The low-level driver should send the frame out based on |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1015 | * configuration in the TX control data. This handler should, |
| 1016 | * preferably, never fail and stop queues appropriately, more |
| 1017 | * importantly, however, it must never fail for A-MPDU-queues. |
| 1018 | * Must be implemented and atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1019 | * |
| 1020 | * @start: Called before the first netdevice attached to the hardware |
| 1021 | * is enabled. This should turn on the hardware and must turn on |
| 1022 | * frame reception (for possibly enabled monitor interfaces.) |
| 1023 | * Returns negative error codes, these may be seen in userspace, |
| 1024 | * or zero. |
| 1025 | * When the device is started it should not have a MAC address |
| 1026 | * to avoid acknowledging frames before a non-monitor device |
| 1027 | * is added. |
| 1028 | * Must be implemented. |
| 1029 | * |
| 1030 | * @stop: Called after last netdevice attached to the hardware |
| 1031 | * is disabled. This should turn off the hardware (at least |
| 1032 | * it must turn off frame reception.) |
| 1033 | * May be called right after add_interface if that rejects |
| 1034 | * an interface. |
| 1035 | * Must be implemented. |
| 1036 | * |
| 1037 | * @add_interface: Called when a netdevice attached to the hardware is |
| 1038 | * enabled. Because it is not called for monitor mode devices, @open |
| 1039 | * and @stop must be implemented. |
| 1040 | * The driver should perform any initialization it needs before |
| 1041 | * the device can be enabled. The initial configuration for the |
| 1042 | * interface is given in the conf parameter. |
| 1043 | * The callback may refuse to add an interface by returning a |
| 1044 | * negative error code (which will be seen in userspace.) |
| 1045 | * Must be implemented. |
| 1046 | * |
| 1047 | * @remove_interface: Notifies a driver that an interface is going down. |
| 1048 | * The @stop callback is called after this if it is the last interface |
| 1049 | * and no monitor interfaces are present. |
| 1050 | * When all interfaces are removed, the MAC address in the hardware |
| 1051 | * must be cleared so the device no longer acknowledges packets, |
| 1052 | * the mac_addr member of the conf structure is, however, set to the |
| 1053 | * MAC address of the device going away. |
| 1054 | * Hence, this callback must be implemented. |
| 1055 | * |
| 1056 | * @config: Handler for configuration requests. IEEE 802.11 code calls this |
| 1057 | * function to change hardware configuration, e.g., channel. |
| 1058 | * |
| 1059 | * @config_interface: Handler for configuration requests related to interfaces |
| 1060 | * (e.g. BSSID changes.) |
| 1061 | * |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1062 | * @bss_info_changed: Handler for configuration requests related to BSS |
| 1063 | * parameters that may vary during BSS's lifespan, and may affect low |
| 1064 | * level driver (e.g. assoc/disassoc status, erp parameters). |
| 1065 | * This function should not be used if no BSS has been set, unless |
| 1066 | * for association indication. The @changed parameter indicates which |
Reinette Chatre | d18ef29 | 2008-04-09 16:56:15 -0700 | [diff] [blame] | 1067 | * of the bss parameters has changed when a call is made. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1068 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1069 | * @configure_filter: Configure the device's RX filter. |
| 1070 | * See the section "Frame filtering" for more information. |
| 1071 | * This callback must be implemented and atomic. |
| 1072 | * |
| 1073 | * @set_tim: Set TIM bit. If the hardware/firmware takes care of beacon |
| 1074 | * generation (that is, %IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE is set) |
| 1075 | * mac80211 calls this function when a TIM bit must be set or cleared |
| 1076 | * for a given AID. Must be atomic. |
| 1077 | * |
| 1078 | * @set_key: See the section "Hardware crypto acceleration" |
| 1079 | * This callback can sleep, and is only called between add_interface |
| 1080 | * and remove_interface calls, i.e. while the interface with the |
| 1081 | * given local_address is enabled. |
| 1082 | * |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1083 | * @update_tkip_key: See the section "Hardware crypto acceleration" |
| 1084 | * This callback will be called in the context of Rx. Called for drivers |
| 1085 | * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. |
| 1086 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1087 | * @hw_scan: Ask the hardware to service the scan request, no need to start |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1088 | * the scan state machine in stack. The scan must honour the channel |
| 1089 | * configuration done by the regulatory agent in the wiphy's registered |
| 1090 | * bands. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1091 | * |
| 1092 | * @get_stats: return low-level statistics |
| 1093 | * |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1094 | * @get_tkip_seq: If your device implements TKIP encryption in hardware this |
| 1095 | * callback should be provided to read the TKIP transmit IVs (both IV32 |
| 1096 | * and IV16) for the given key from hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1097 | * |
| 1098 | * @set_rts_threshold: Configuration of RTS threshold (if device needs it) |
| 1099 | * |
| 1100 | * @set_frag_threshold: Configuration of fragmentation threshold. Assign this if |
| 1101 | * the device does fragmentation by itself; if this method is assigned then |
| 1102 | * the stack will not do fragmentation. |
| 1103 | * |
| 1104 | * @set_retry_limit: Configuration of retry limits (if device needs it) |
| 1105 | * |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 1106 | * @sta_notify: Notifies low level driver about addition or removal |
| 1107 | * of assocaited station or AP. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1108 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1109 | * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1110 | * bursting) for a hardware TX queue. Must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1111 | * |
| 1112 | * @get_tx_stats: Get statistics of the current TX queue status. This is used |
| 1113 | * to get number of currently queued packets (queue length), maximum queue |
| 1114 | * size (limit), and total number of packets sent using each TX queue |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 1115 | * (count). The 'stats' pointer points to an array that has hw->queues + |
| 1116 | * hw->ampdu_queues items. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1117 | * |
| 1118 | * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, |
| 1119 | * this is only used for IBSS mode debugging and, as such, is not a |
| 1120 | * required function. Must be atomic. |
| 1121 | * |
| 1122 | * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize |
| 1123 | * with other STAs in the IBSS. This is only used in IBSS mode. This |
| 1124 | * function is optional if the firmware/hardware takes full care of |
| 1125 | * TSF synchronization. |
| 1126 | * |
| 1127 | * @beacon_update: Setup beacon data for IBSS beacons. Unlike access point, |
| 1128 | * IBSS uses a fixed beacon frame which is configured using this |
Michael Buesch | 5ecc2a5 | 2007-10-02 12:17:56 +0200 | [diff] [blame] | 1129 | * function. |
| 1130 | * If the driver returns success (0) from this callback, it owns |
| 1131 | * the skb. That means the driver is responsible to kfree_skb() it. |
| 1132 | * The control structure is not dynamically allocated. That means the |
| 1133 | * driver does not own the pointer and if it needs it somewhere |
| 1134 | * outside of the context of this function, it must copy it |
| 1135 | * somewhere else. |
| 1136 | * This handler is required only for IBSS mode. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1137 | * |
| 1138 | * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. |
| 1139 | * This is needed only for IBSS mode and the result of this function is |
| 1140 | * used to determine whether to reply to Probe Requests. |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1141 | * |
| 1142 | * @conf_ht: Configures low level driver with 802.11n HT data. Must be atomic. |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1143 | * |
| 1144 | * @ampdu_action: Perform a certain A-MPDU action |
| 1145 | * The RA/TID combination determines the destination and TID we want |
| 1146 | * the ampdu action to be performed for. The action is defined through |
| 1147 | * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1148 | * is the first frame we expect to perform the action on. notice |
| 1149 | * that TX/RX_STOP can pass NULL for this parameter. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1150 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1151 | struct ieee80211_ops { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1152 | int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1153 | int (*start)(struct ieee80211_hw *hw); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1154 | void (*stop)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1155 | int (*add_interface)(struct ieee80211_hw *hw, |
| 1156 | struct ieee80211_if_init_conf *conf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1157 | void (*remove_interface)(struct ieee80211_hw *hw, |
| 1158 | struct ieee80211_if_init_conf *conf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1159 | int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1160 | int (*config_interface)(struct ieee80211_hw *hw, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1161 | struct ieee80211_vif *vif, |
| 1162 | struct ieee80211_if_conf *conf); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1163 | void (*bss_info_changed)(struct ieee80211_hw *hw, |
| 1164 | struct ieee80211_vif *vif, |
| 1165 | struct ieee80211_bss_conf *info, |
| 1166 | u32 changed); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1167 | void (*configure_filter)(struct ieee80211_hw *hw, |
| 1168 | unsigned int changed_flags, |
| 1169 | unsigned int *total_flags, |
| 1170 | int mc_count, struct dev_addr_list *mc_list); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1171 | int (*set_tim)(struct ieee80211_hw *hw, int aid, int set); |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1172 | int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 1173 | const u8 *local_address, const u8 *address, |
| 1174 | struct ieee80211_key_conf *key); |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1175 | void (*update_tkip_key)(struct ieee80211_hw *hw, |
| 1176 | struct ieee80211_key_conf *conf, const u8 *address, |
| 1177 | u32 iv32, u16 *phase1key); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1178 | int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1179 | int (*get_stats)(struct ieee80211_hw *hw, |
| 1180 | struct ieee80211_low_level_stats *stats); |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1181 | void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, |
| 1182 | u32 *iv32, u16 *iv16); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1183 | int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1184 | int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1185 | int (*set_retry_limit)(struct ieee80211_hw *hw, |
| 1186 | u32 short_retry, u32 long_retr); |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1187 | void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 1188 | enum sta_notify_cmd, const u8 *addr); |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1189 | int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1190 | const struct ieee80211_tx_queue_params *params); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1191 | int (*get_tx_stats)(struct ieee80211_hw *hw, |
| 1192 | struct ieee80211_tx_queue_stats *stats); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1193 | u64 (*get_tsf)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1194 | void (*reset_tsf)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1195 | int (*beacon_update)(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1196 | struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1197 | int (*tx_last_beacon)(struct ieee80211_hw *hw); |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1198 | int (*ampdu_action)(struct ieee80211_hw *hw, |
| 1199 | enum ieee80211_ampdu_mlme_action action, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1200 | const u8 *addr, u16 tid, u16 *ssn); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1201 | }; |
| 1202 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1203 | /** |
| 1204 | * ieee80211_alloc_hw - Allocate a new hardware device |
| 1205 | * |
| 1206 | * This must be called once for each hardware device. The returned pointer |
| 1207 | * must be used to refer to this device when calling other functions. |
| 1208 | * mac80211 allocates a private data area for the driver pointed to by |
| 1209 | * @priv in &struct ieee80211_hw, the size of this area is given as |
| 1210 | * @priv_data_len. |
| 1211 | * |
| 1212 | * @priv_data_len: length of private data |
| 1213 | * @ops: callbacks for this device |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1214 | */ |
| 1215 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 1216 | const struct ieee80211_ops *ops); |
| 1217 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1218 | /** |
| 1219 | * ieee80211_register_hw - Register hardware device |
| 1220 | * |
Johannes Berg | dbbea67 | 2008-02-26 14:34:06 +0100 | [diff] [blame] | 1221 | * You must call this function before any other functions in |
| 1222 | * mac80211. Note that before a hardware can be registered, you |
| 1223 | * need to fill the contained wiphy's information. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1224 | * |
| 1225 | * @hw: the device to register as returned by ieee80211_alloc_hw() |
| 1226 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1227 | int ieee80211_register_hw(struct ieee80211_hw *hw); |
| 1228 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1229 | #ifdef CONFIG_MAC80211_LEDS |
| 1230 | extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); |
| 1231 | extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1232 | extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1233 | extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1234 | #endif |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1235 | /** |
| 1236 | * ieee80211_get_tx_led_name - get name of TX LED |
| 1237 | * |
| 1238 | * mac80211 creates a transmit LED trigger for each wireless hardware |
| 1239 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1240 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1241 | * of the trigger so you can automatically link the LED device. |
| 1242 | * |
| 1243 | * @hw: the hardware to get the LED trigger name for |
| 1244 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1245 | static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
| 1246 | { |
| 1247 | #ifdef CONFIG_MAC80211_LEDS |
| 1248 | return __ieee80211_get_tx_led_name(hw); |
| 1249 | #else |
| 1250 | return NULL; |
| 1251 | #endif |
| 1252 | } |
| 1253 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1254 | /** |
| 1255 | * ieee80211_get_rx_led_name - get name of RX LED |
| 1256 | * |
| 1257 | * mac80211 creates a receive LED trigger for each wireless hardware |
| 1258 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1259 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1260 | * of the trigger so you can automatically link the LED device. |
| 1261 | * |
| 1262 | * @hw: the hardware to get the LED trigger name for |
| 1263 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1264 | static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
| 1265 | { |
| 1266 | #ifdef CONFIG_MAC80211_LEDS |
| 1267 | return __ieee80211_get_rx_led_name(hw); |
| 1268 | #else |
| 1269 | return NULL; |
| 1270 | #endif |
| 1271 | } |
| 1272 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1273 | /** |
| 1274 | * ieee80211_get_assoc_led_name - get name of association LED |
| 1275 | * |
| 1276 | * mac80211 creates a association LED trigger for each wireless hardware |
| 1277 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1278 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1279 | * of the trigger so you can automatically link the LED device. |
| 1280 | * |
| 1281 | * @hw: the hardware to get the LED trigger name for |
| 1282 | */ |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1283 | static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
| 1284 | { |
| 1285 | #ifdef CONFIG_MAC80211_LEDS |
| 1286 | return __ieee80211_get_assoc_led_name(hw); |
| 1287 | #else |
| 1288 | return NULL; |
| 1289 | #endif |
| 1290 | } |
| 1291 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1292 | /** |
| 1293 | * ieee80211_get_radio_led_name - get name of radio LED |
| 1294 | * |
| 1295 | * mac80211 creates a radio change LED trigger for each wireless hardware |
| 1296 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1297 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1298 | * of the trigger so you can automatically link the LED device. |
| 1299 | * |
| 1300 | * @hw: the hardware to get the LED trigger name for |
| 1301 | */ |
| 1302 | static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) |
| 1303 | { |
| 1304 | #ifdef CONFIG_MAC80211_LEDS |
| 1305 | return __ieee80211_get_radio_led_name(hw); |
| 1306 | #else |
| 1307 | return NULL; |
| 1308 | #endif |
| 1309 | } |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1310 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1311 | /** |
| 1312 | * ieee80211_unregister_hw - Unregister a hardware device |
| 1313 | * |
| 1314 | * This function instructs mac80211 to free allocated resources |
| 1315 | * and unregister netdevices from the networking subsystem. |
| 1316 | * |
| 1317 | * @hw: the hardware to unregister |
| 1318 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1319 | void ieee80211_unregister_hw(struct ieee80211_hw *hw); |
| 1320 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1321 | /** |
| 1322 | * ieee80211_free_hw - free hardware descriptor |
| 1323 | * |
| 1324 | * This function frees everything that was allocated, including the |
| 1325 | * private data for the driver. You must call ieee80211_unregister_hw() |
| 1326 | * before calling this function |
| 1327 | * |
| 1328 | * @hw: the hardware to free |
| 1329 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1330 | void ieee80211_free_hw(struct ieee80211_hw *hw); |
| 1331 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1332 | /* trick to avoid symbol clashes with the ieee80211 subsystem */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1333 | void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 1334 | struct ieee80211_rx_status *status); |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1335 | |
| 1336 | /** |
| 1337 | * ieee80211_rx - receive frame |
| 1338 | * |
| 1339 | * Use this function to hand received frames to mac80211. The receive |
| 1340 | * buffer in @skb must start with an IEEE 802.11 header or a radiotap |
| 1341 | * header if %RX_FLAG_RADIOTAP is set in the @status flags. |
| 1342 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1343 | * This function may not be called in IRQ context. Calls to this function |
| 1344 | * for a single hardware must be synchronized against each other. Calls |
| 1345 | * to this function and ieee80211_rx_irqsafe() may not be mixed for a |
| 1346 | * single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1347 | * |
| 1348 | * @hw: the hardware this frame came in on |
| 1349 | * @skb: the buffer to receive, owned by mac80211 after this call |
| 1350 | * @status: status of this frame; the status pointer need not be valid |
| 1351 | * after this function returns |
| 1352 | */ |
| 1353 | static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 1354 | struct ieee80211_rx_status *status) |
| 1355 | { |
| 1356 | __ieee80211_rx(hw, skb, status); |
| 1357 | } |
| 1358 | |
| 1359 | /** |
| 1360 | * ieee80211_rx_irqsafe - receive frame |
| 1361 | * |
| 1362 | * Like ieee80211_rx() but can be called in IRQ context |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1363 | * (internally defers to a tasklet.) |
| 1364 | * |
| 1365 | * Calls to this function and ieee80211_rx() may not be mixed for a |
| 1366 | * single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1367 | * |
| 1368 | * @hw: the hardware this frame came in on |
| 1369 | * @skb: the buffer to receive, owned by mac80211 after this call |
| 1370 | * @status: status of this frame; the status pointer need not be valid |
| 1371 | * after this function returns and is not freed by mac80211, |
| 1372 | * it is recommended that it points to a stack area |
| 1373 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1374 | void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, |
| 1375 | struct sk_buff *skb, |
| 1376 | struct ieee80211_rx_status *status); |
| 1377 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1378 | /** |
| 1379 | * ieee80211_tx_status - transmit status callback |
| 1380 | * |
| 1381 | * Call this function for all transmitted frames after they have been |
| 1382 | * transmitted. It is permissible to not call this function for |
| 1383 | * multicast frames but this can affect statistics. |
| 1384 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1385 | * This function may not be called in IRQ context. Calls to this function |
| 1386 | * for a single hardware must be synchronized against each other. Calls |
| 1387 | * to this function and ieee80211_tx_status_irqsafe() may not be mixed |
| 1388 | * for a single hardware. |
| 1389 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1390 | * @hw: the hardware the frame was transmitted by |
| 1391 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1392 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1393 | void ieee80211_tx_status(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1394 | struct sk_buff *skb); |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1395 | |
| 1396 | /** |
| 1397 | * ieee80211_tx_status_irqsafe - irq-safe transmit status callback |
| 1398 | * |
| 1399 | * Like ieee80211_tx_status() but can be called in IRQ context |
| 1400 | * (internally defers to a tasklet.) |
| 1401 | * |
| 1402 | * Calls to this function and ieee80211_tx_status() may not be mixed for a |
| 1403 | * single hardware. |
| 1404 | * |
| 1405 | * @hw: the hardware the frame was transmitted by |
| 1406 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1407 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1408 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1409 | struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1410 | |
| 1411 | /** |
| 1412 | * ieee80211_beacon_get - beacon generation function |
| 1413 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1414 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1415 | * @control: will be filled with information needed to send this beacon. |
| 1416 | * |
| 1417 | * If the beacon frames are generated by the host system (i.e., not in |
| 1418 | * hardware/firmware), the low-level driver uses this function to receive |
| 1419 | * the next beacon frame from the 802.11 code. The low-level is responsible |
| 1420 | * for calling this function before beacon data is needed (e.g., based on |
| 1421 | * hardware interrupt). Returned skb is used only once and low-level driver |
| 1422 | * is responsible of freeing it. |
| 1423 | */ |
| 1424 | struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1425 | struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1426 | |
| 1427 | /** |
| 1428 | * ieee80211_rts_get - RTS frame generation function |
| 1429 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1430 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1431 | * @frame: pointer to the frame that is going to be protected by the RTS. |
| 1432 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1433 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1434 | * @rts: The buffer where to store the RTS frame. |
| 1435 | * |
| 1436 | * If the RTS frames are generated by the host system (i.e., not in |
| 1437 | * hardware/firmware), the low-level driver uses this function to receive |
| 1438 | * the next RTS frame from the 802.11 code. The low-level is responsible |
| 1439 | * for calling this function before and RTS frame is needed. |
| 1440 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1441 | void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1442 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1443 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1444 | struct ieee80211_rts *rts); |
| 1445 | |
| 1446 | /** |
| 1447 | * ieee80211_rts_duration - Get the duration field for an RTS frame |
| 1448 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1449 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1450 | * @frame_len: the length of the frame that is going to be protected by the RTS. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1451 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1452 | * |
| 1453 | * If the RTS is generated in firmware, but the host system must provide |
| 1454 | * the duration field, the low-level driver uses this function to receive |
| 1455 | * the duration field value in little-endian byteorder. |
| 1456 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1457 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 1458 | struct ieee80211_vif *vif, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1459 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1460 | |
| 1461 | /** |
| 1462 | * ieee80211_ctstoself_get - CTS-to-self frame generation function |
| 1463 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1464 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1465 | * @frame: pointer to the frame that is going to be protected by the CTS-to-self. |
| 1466 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1467 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1468 | * @cts: The buffer where to store the CTS-to-self frame. |
| 1469 | * |
| 1470 | * If the CTS-to-self frames are generated by the host system (i.e., not in |
| 1471 | * hardware/firmware), the low-level driver uses this function to receive |
| 1472 | * the next CTS-to-self frame from the 802.11 code. The low-level is responsible |
| 1473 | * for calling this function before and CTS-to-self frame is needed. |
| 1474 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1475 | void ieee80211_ctstoself_get(struct ieee80211_hw *hw, |
| 1476 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1477 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1478 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1479 | struct ieee80211_cts *cts); |
| 1480 | |
| 1481 | /** |
| 1482 | * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame |
| 1483 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1484 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1485 | * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1486 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1487 | * |
| 1488 | * If the CTS-to-self is generated in firmware, but the host system must provide |
| 1489 | * the duration field, the low-level driver uses this function to receive |
| 1490 | * the duration field value in little-endian byteorder. |
| 1491 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1492 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 1493 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1494 | size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1495 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1496 | |
| 1497 | /** |
| 1498 | * ieee80211_generic_frame_duration - Calculate the duration field for a frame |
| 1499 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1500 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1501 | * @frame_len: the length of the frame. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1502 | * @rate: the rate at which the frame is going to be transmitted. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1503 | * |
| 1504 | * Calculate the duration field of some generic frame, given its |
| 1505 | * length and transmission rate (in 100kbps). |
| 1506 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1507 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 1508 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1509 | size_t frame_len, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1510 | struct ieee80211_rate *rate); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1511 | |
| 1512 | /** |
| 1513 | * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames |
| 1514 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1515 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1516 | * @control: will be filled with information needed to send returned frame. |
| 1517 | * |
| 1518 | * Function for accessing buffered broadcast and multicast frames. If |
| 1519 | * hardware/firmware does not implement buffering of broadcast/multicast |
| 1520 | * frames when power saving is used, 802.11 code buffers them in the host |
| 1521 | * memory. The low-level driver uses this function to fetch next buffered |
| 1522 | * frame. In most cases, this is used when generating beacon frame. This |
| 1523 | * function returns a pointer to the next buffered skb or NULL if no more |
| 1524 | * buffered frames are available. |
| 1525 | * |
| 1526 | * Note: buffered frames are returned only after DTIM beacon frame was |
| 1527 | * generated with ieee80211_beacon_get() and the low-level driver must thus |
| 1528 | * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns |
| 1529 | * NULL if the previous generated beacon was not DTIM, so the low-level driver |
| 1530 | * does not need to check for DTIM beacons separately and should be able to |
| 1531 | * use common code for all beacons. |
| 1532 | */ |
| 1533 | struct sk_buff * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1534 | ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1535 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1536 | /** |
| 1537 | * ieee80211_get_hdrlen_from_skb - get header length from data |
| 1538 | * |
| 1539 | * Given an skb with a raw 802.11 header at the data pointer this function |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1540 | * returns the 802.11 header length in bytes (not including encryption |
| 1541 | * headers). If the data in the sk_buff is too short to contain a valid 802.11 |
| 1542 | * header the function returns 0. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1543 | * |
| 1544 | * @skb: the frame |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1545 | */ |
Harvey Harrison | c9c6950 | 2008-06-11 14:21:57 -0700 | [diff] [blame] | 1546 | unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1547 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1548 | /** |
| 1549 | * ieee80211_get_hdrlen - get header length from frame control |
| 1550 | * |
| 1551 | * This function returns the 802.11 header length in bytes (not including |
| 1552 | * encryption headers.) |
| 1553 | * |
| 1554 | * @fc: the frame control field (in CPU endianness) |
| 1555 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1556 | int ieee80211_get_hdrlen(u16 fc); |
| 1557 | |
| 1558 | /** |
Harvey Harrison | 6693be7 | 2008-06-11 14:21:57 -0700 | [diff] [blame] | 1559 | * ieee80211_hdrlen - get header length in bytes from frame control |
| 1560 | * @fc: frame control field in little-endian format |
| 1561 | */ |
| 1562 | unsigned int ieee80211_hdrlen(__le16 fc); |
| 1563 | |
| 1564 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 1565 | * ieee80211_get_tkip_key - get a TKIP rc4 for skb |
| 1566 | * |
| 1567 | * This function computes a TKIP rc4 key for an skb. It computes |
| 1568 | * a phase 1 key if needed (iv16 wraps around). This function is to |
| 1569 | * be used by drivers which can do HW encryption but need to compute |
| 1570 | * to phase 1/2 key in SW. |
| 1571 | * |
| 1572 | * @keyconf: the parameter passed with the set key |
| 1573 | * @skb: the skb for which the key is needed |
| 1574 | * @rc4key: a buffer to which the key will be written |
| 1575 | */ |
| 1576 | void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, |
| 1577 | struct sk_buff *skb, |
| 1578 | enum ieee80211_tkip_key_type type, u8 *key); |
| 1579 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1580 | * ieee80211_wake_queue - wake specific queue |
| 1581 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1582 | * @queue: queue number (counted from zero). |
| 1583 | * |
| 1584 | * Drivers should use this function instead of netif_wake_queue. |
| 1585 | */ |
| 1586 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); |
| 1587 | |
| 1588 | /** |
| 1589 | * ieee80211_stop_queue - stop specific queue |
| 1590 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1591 | * @queue: queue number (counted from zero). |
| 1592 | * |
| 1593 | * Drivers should use this function instead of netif_stop_queue. |
| 1594 | */ |
| 1595 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); |
| 1596 | |
| 1597 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1598 | * ieee80211_stop_queues - stop all queues |
| 1599 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1600 | * |
| 1601 | * Drivers should use this function instead of netif_stop_queue. |
| 1602 | */ |
| 1603 | void ieee80211_stop_queues(struct ieee80211_hw *hw); |
| 1604 | |
| 1605 | /** |
| 1606 | * ieee80211_wake_queues - wake all queues |
| 1607 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1608 | * |
| 1609 | * Drivers should use this function instead of netif_wake_queue. |
| 1610 | */ |
| 1611 | void ieee80211_wake_queues(struct ieee80211_hw *hw); |
| 1612 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1613 | /** |
| 1614 | * ieee80211_scan_completed - completed hardware scan |
| 1615 | * |
| 1616 | * When hardware scan offload is used (i.e. the hw_scan() callback is |
| 1617 | * assigned) this function needs to be called by the driver to notify |
| 1618 | * mac80211 that the scan finished. |
| 1619 | * |
| 1620 | * @hw: the hardware that finished the scan |
| 1621 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1622 | void ieee80211_scan_completed(struct ieee80211_hw *hw); |
| 1623 | |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1624 | /** |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 1625 | * ieee80211_iterate_active_interfaces- iterate active interfaces |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1626 | * |
| 1627 | * This function iterates over the interfaces associated with a given |
| 1628 | * hardware that are currently active and calls the callback for them. |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 1629 | * This function allows the iterator function to sleep, when the iterator |
| 1630 | * function is atomic @ieee80211_iterate_active_interfaces_atomic can |
| 1631 | * be used. |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1632 | * |
| 1633 | * @hw: the hardware struct of which the interfaces should be iterated over |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 1634 | * @iterator: the iterator function to call |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1635 | * @data: first argument of the iterator function |
| 1636 | */ |
| 1637 | void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, |
| 1638 | void (*iterator)(void *data, u8 *mac, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1639 | struct ieee80211_vif *vif), |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1640 | void *data); |
| 1641 | |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1642 | /** |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 1643 | * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces |
| 1644 | * |
| 1645 | * This function iterates over the interfaces associated with a given |
| 1646 | * hardware that are currently active and calls the callback for them. |
| 1647 | * This function requires the iterator callback function to be atomic, |
| 1648 | * if that is not desired, use @ieee80211_iterate_active_interfaces instead. |
| 1649 | * |
| 1650 | * @hw: the hardware struct of which the interfaces should be iterated over |
| 1651 | * @iterator: the iterator function to call, cannot sleep |
| 1652 | * @data: first argument of the iterator function |
| 1653 | */ |
| 1654 | void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, |
| 1655 | void (*iterator)(void *data, |
| 1656 | u8 *mac, |
| 1657 | struct ieee80211_vif *vif), |
| 1658 | void *data); |
| 1659 | |
| 1660 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1661 | * ieee80211_start_tx_ba_session - Start a tx Block Ack session. |
| 1662 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1663 | * @ra: receiver address of the BA session recipient |
| 1664 | * @tid: the TID to BA on. |
| 1665 | * @return: success if addBA request was sent, failure otherwise |
| 1666 | * |
| 1667 | * Although mac80211/low level driver/user space application can estimate |
| 1668 | * the need to start aggregation on a certain RA/TID, the session level |
| 1669 | * will be managed by the mac80211. |
| 1670 | */ |
| 1671 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid); |
| 1672 | |
| 1673 | /** |
| 1674 | * ieee80211_start_tx_ba_cb - low level driver ready to aggregate. |
| 1675 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1676 | * @ra: receiver address of the BA session recipient. |
| 1677 | * @tid: the TID to BA on. |
| 1678 | * |
| 1679 | * This function must be called by low level driver once it has |
| 1680 | * finished with preparations for the BA session. |
| 1681 | */ |
| 1682 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid); |
| 1683 | |
| 1684 | /** |
| 1685 | * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. |
| 1686 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1687 | * @ra: receiver address of the BA session recipient. |
| 1688 | * @tid: the TID to BA on. |
| 1689 | * |
| 1690 | * This function must be called by low level driver once it has |
| 1691 | * finished with preparations for the BA session. |
| 1692 | * This version of the function is irq safe. |
| 1693 | */ |
| 1694 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, |
| 1695 | u16 tid); |
| 1696 | |
| 1697 | /** |
| 1698 | * ieee80211_stop_tx_ba_session - Stop a Block Ack session. |
| 1699 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1700 | * @ra: receiver address of the BA session recipient |
| 1701 | * @tid: the TID to stop BA. |
| 1702 | * @initiator: if indicates initiator DELBA frame will be sent. |
| 1703 | * @return: error if no sta with matching da found, success otherwise |
| 1704 | * |
| 1705 | * Although mac80211/low level driver/user space application can estimate |
| 1706 | * the need to stop aggregation on a certain RA/TID, the session level |
| 1707 | * will be managed by the mac80211. |
| 1708 | */ |
| 1709 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, |
| 1710 | u8 *ra, u16 tid, |
| 1711 | enum ieee80211_back_parties initiator); |
| 1712 | |
| 1713 | /** |
| 1714 | * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate. |
| 1715 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1716 | * @ra: receiver address of the BA session recipient. |
| 1717 | * @tid: the desired TID to BA on. |
| 1718 | * |
| 1719 | * This function must be called by low level driver once it has |
| 1720 | * finished with preparations for the BA session tear down. |
| 1721 | */ |
| 1722 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid); |
| 1723 | |
| 1724 | /** |
| 1725 | * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. |
| 1726 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1727 | * @ra: receiver address of the BA session recipient. |
| 1728 | * @tid: the desired TID to BA on. |
| 1729 | * |
| 1730 | * This function must be called by low level driver once it has |
| 1731 | * finished with preparations for the BA session tear down. |
| 1732 | * This version of the function is irq safe. |
| 1733 | */ |
| 1734 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, |
| 1735 | u16 tid); |
| 1736 | |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 1737 | /** |
| 1738 | * ieee80211_notify_mac - low level driver notification |
| 1739 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1740 | * @notification_types: enum ieee80211_notification_types |
| 1741 | * |
| 1742 | * This function must be called by low level driver to inform mac80211 of |
| 1743 | * low level driver status change or force mac80211 to re-assoc for low |
| 1744 | * level driver internal error that require re-assoc. |
| 1745 | */ |
| 1746 | void ieee80211_notify_mac(struct ieee80211_hw *hw, |
| 1747 | enum ieee80211_notification_types notif_type); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1748 | #endif /* MAC80211_H */ |