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 | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 6 | * Copyright 2007-2008 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> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 22 | #include <net/cfg80211.h> |
| 23 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 24 | /** |
| 25 | * DOC: Introduction |
| 26 | * |
| 27 | * mac80211 is the Linux stack for 802.11 hardware that implements |
| 28 | * only partial functionality in hard- or firmware. This document |
| 29 | * defines the interface between mac80211 and low-level hardware |
| 30 | * drivers. |
| 31 | */ |
| 32 | |
| 33 | /** |
| 34 | * DOC: Calling mac80211 from interrupts |
| 35 | * |
| 36 | * Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 37 | * called in hardware interrupt context. The low-level driver must not call any |
| 38 | * other functions in hardware interrupt context. If there is a need for such |
| 39 | * 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] | 40 | * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even |
| 41 | * tasklet function. |
| 42 | * |
| 43 | * NOTE: If the driver opts to use the _irqsafe() functions, it may not also |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 44 | * use the non-IRQ-safe functions! |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 45 | */ |
| 46 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 47 | /** |
| 48 | * DOC: Warning |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 49 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 50 | * If you're reading this document and not the header file itself, it will |
| 51 | * be incomplete because not all documentation has been converted yet. |
| 52 | */ |
| 53 | |
| 54 | /** |
| 55 | * DOC: Frame format |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 56 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 57 | * As a general rule, when frames are passed between mac80211 and the driver, |
| 58 | * they start with the IEEE 802.11 header and include the same octets that are |
| 59 | * sent over the air except for the FCS which should be calculated by the |
| 60 | * hardware. |
| 61 | * |
| 62 | * There are, however, various exceptions to this rule for advanced features: |
| 63 | * |
| 64 | * The first exception is for hardware encryption and decryption offload |
| 65 | * where the IV/ICV may or may not be generated in hardware. |
| 66 | * |
| 67 | * Secondly, when the hardware handles fragmentation, the frame handed to |
| 68 | * the driver from mac80211 is the MSDU, not the MPDU. |
| 69 | * |
| 70 | * Finally, for received frames, the driver is able to indicate that it has |
| 71 | * filled a radiotap header and put that in front of the frame; if it does |
| 72 | * not do so then mac80211 may add this under certain circumstances. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 73 | */ |
| 74 | |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 75 | /** |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 76 | * DOC: mac80211 workqueue |
| 77 | * |
| 78 | * mac80211 provides its own workqueue for drivers and internal mac80211 use. |
| 79 | * The workqueue is a single threaded workqueue and can only be accessed by |
| 80 | * helpers for sanity checking. Drivers must ensure all work added onto the |
| 81 | * mac80211 workqueue should be cancelled on the driver stop() callback. |
| 82 | * |
| 83 | * mac80211 will flushed the workqueue upon interface removal and during |
| 84 | * suspend. |
| 85 | * |
| 86 | * All work performed on the mac80211 workqueue must not acquire the RTNL lock. |
| 87 | * |
| 88 | */ |
| 89 | |
| 90 | /** |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 91 | * enum ieee80211_max_queues - maximum number of queues |
| 92 | * |
| 93 | * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 94 | */ |
| 95 | enum ieee80211_max_queues { |
Johannes Berg | 51b3814 | 2009-03-12 11:16:48 +0100 | [diff] [blame] | 96 | IEEE80211_MAX_QUEUES = 4, |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 97 | }; |
| 98 | |
| 99 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 100 | * struct ieee80211_tx_queue_params - transmit queue configuration |
| 101 | * |
| 102 | * The information provided in this structure is required for QoS |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 103 | * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 104 | * |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 105 | * @aifs: arbitration interframe space [0..255] |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 106 | * @cw_min: minimum contention window [a value of the form |
| 107 | * 2^n-1 in the range 1..32767] |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 108 | * @cw_max: maximum contention window [like @cw_min] |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 109 | * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 110 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 111 | struct ieee80211_tx_queue_params { |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 112 | u16 txop; |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 113 | u16 cw_min; |
| 114 | u16 cw_max; |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 115 | u8 aifs; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 116 | }; |
| 117 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 118 | /** |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 119 | * struct ieee80211_tx_queue_stats - transmit queue statistics |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 120 | * |
| 121 | * @len: number of packets in queue |
| 122 | * @limit: queue length limit |
| 123 | * @count: number of frames sent |
| 124 | */ |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 125 | struct ieee80211_tx_queue_stats { |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 126 | unsigned int len; |
| 127 | unsigned int limit; |
| 128 | unsigned int count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 129 | }; |
| 130 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 131 | struct ieee80211_low_level_stats { |
| 132 | unsigned int dot11ACKFailureCount; |
| 133 | unsigned int dot11RTSFailureCount; |
| 134 | unsigned int dot11FCSErrorCount; |
| 135 | unsigned int dot11RTSSuccessCount; |
| 136 | }; |
| 137 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 138 | /** |
| 139 | * enum ieee80211_bss_change - BSS change notification flags |
| 140 | * |
| 141 | * These flags are used with the bss_info_changed() callback |
| 142 | * to indicate which BSS parameter changed. |
| 143 | * |
| 144 | * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), |
| 145 | * also implies a change in the AID. |
| 146 | * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed |
| 147 | * @BSS_CHANGED_ERP_PREAMBLE: preamble changed |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 148 | * @BSS_CHANGED_ERP_SLOT: slot timing changed |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 149 | * @BSS_CHANGED_HT: 802.11n parameters changed |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 150 | * @BSS_CHANGED_BASIC_RATES: Basic rateset changed |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 151 | * @BSS_CHANGED_BEACON_INT: Beacon interval changed |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 152 | * @BSS_CHANGED_BSSID: BSSID changed, for whatever |
| 153 | * reason (IBSS and managed mode) |
| 154 | * @BSS_CHANGED_BEACON: Beacon data changed, retrieve |
| 155 | * new beacon (beaconing modes) |
| 156 | * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be |
| 157 | * enabled/disabled (beaconing modes) |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 158 | */ |
| 159 | enum ieee80211_bss_change { |
| 160 | BSS_CHANGED_ASSOC = 1<<0, |
| 161 | BSS_CHANGED_ERP_CTS_PROT = 1<<1, |
| 162 | BSS_CHANGED_ERP_PREAMBLE = 1<<2, |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 163 | BSS_CHANGED_ERP_SLOT = 1<<3, |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 164 | BSS_CHANGED_HT = 1<<4, |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 165 | BSS_CHANGED_BASIC_RATES = 1<<5, |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 166 | BSS_CHANGED_BEACON_INT = 1<<6, |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 167 | BSS_CHANGED_BSSID = 1<<7, |
| 168 | BSS_CHANGED_BEACON = 1<<8, |
| 169 | BSS_CHANGED_BEACON_ENABLED = 1<<9, |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 170 | }; |
| 171 | |
| 172 | /** |
| 173 | * struct ieee80211_bss_conf - holds the BSS's changing parameters |
| 174 | * |
| 175 | * This structure keeps information about a BSS (and an association |
| 176 | * to that BSS) that can change during the lifetime of the BSS. |
| 177 | * |
| 178 | * @assoc: association status |
| 179 | * @aid: association ID number, valid only when @assoc is true |
| 180 | * @use_cts_prot: use CTS protection |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 181 | * @use_short_preamble: use 802.11b short preamble; |
| 182 | * if the hardware cannot handle this it must set the |
| 183 | * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag |
| 184 | * @use_short_slot: use short slot time (only relevant for ERP); |
| 185 | * if the hardware cannot handle this it must set the |
| 186 | * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 187 | * @dtim_period: num of beacons before the next DTIM, for PSM |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 188 | * @timestamp: beacon timestamp |
| 189 | * @beacon_int: beacon interval |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 190 | * @assoc_capability: capabilities taken from assoc resp |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 191 | * @basic_rates: bitmap of basic rates, each bit stands for an |
| 192 | * index into the rate table configured by the driver in |
| 193 | * the current band. |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 194 | * @bssid: The BSSID for this BSS |
| 195 | * @enable_beacon: whether beaconing should be enabled or not |
Johannes Berg | 9ed6bcc | 2009-05-08 20:47:39 +0200 | [diff] [blame] | 196 | * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info). |
| 197 | * This field is only valid when the channel type is one of the HT types. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 198 | */ |
| 199 | struct ieee80211_bss_conf { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 200 | const u8 *bssid; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 201 | /* association related data */ |
| 202 | bool assoc; |
| 203 | u16 aid; |
| 204 | /* erp related data */ |
| 205 | bool use_cts_prot; |
| 206 | bool use_short_preamble; |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 207 | bool use_short_slot; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 208 | bool enable_beacon; |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 209 | u8 dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 210 | u16 beacon_int; |
| 211 | u16 assoc_capability; |
| 212 | u64 timestamp; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 213 | u32 basic_rates; |
Johannes Berg | 9ed6bcc | 2009-05-08 20:47:39 +0200 | [diff] [blame] | 214 | u16 ht_operation_mode; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 215 | }; |
| 216 | |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 217 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 218 | * enum mac80211_tx_control_flags - flags to describe transmission information/status |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 219 | * |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 220 | * These flags are used with the @flags member of &ieee80211_tx_info. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 221 | * |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 222 | * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 223 | * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence |
| 224 | * number to this frame, taking care of not overwriting the fragment |
| 225 | * number and increasing the sequence number only when the |
| 226 | * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly |
| 227 | * assign sequence numbers to QoS-data frames but cannot do so correctly |
| 228 | * for non-QoS-data and management frames because beacons need them from |
| 229 | * that counter as well and mac80211 cannot guarantee proper sequencing. |
| 230 | * If this flag is set, the driver should instruct the hardware to |
| 231 | * assign a sequence number to the frame or assign one itself. Cf. IEEE |
| 232 | * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for |
| 233 | * beacons and always be clear for frames without a sequence number field. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 234 | * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 235 | * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination |
| 236 | * station |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 237 | * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 238 | * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon |
| 239 | * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 240 | * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 241 | * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted |
Johannes Berg | ab5b534 | 2009-08-07 16:28:09 +0200 | [diff] [blame] | 242 | * because the destination STA was in powersave mode. Note that to |
| 243 | * avoid race conditions, the filter must be set by the hardware or |
| 244 | * firmware upon receiving a frame that indicates that the station |
| 245 | * went to sleep (must be done on device to filter frames already on |
| 246 | * the queue) and may only be unset after mac80211 gives the OK for |
| 247 | * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), |
| 248 | * since only then is it guaranteed that no more frames are in the |
| 249 | * hardware queue. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 250 | * @IEEE80211_TX_STAT_ACK: Frame was acknowledged |
| 251 | * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status |
| 252 | * is for the whole aggregation. |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 253 | * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, |
| 254 | * so consider using block ack request (BAR). |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 255 | * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be |
| 256 | * set by rate control algorithms to indicate probe rate, will |
| 257 | * be cleared for fragmented frames (except on the last fragment) |
Johannes Berg | 2b874e8 | 2009-03-23 14:10:22 +0100 | [diff] [blame] | 258 | * @IEEE80211_TX_INTFL_RCALGO: mac80211 internal flag, do not test or |
| 259 | * set this flag in the driver; indicates that the rate control |
| 260 | * algorithm was used and should be notified of TX status |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 261 | * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, |
| 262 | * used to indicate that a pending frame requires TX processing before |
| 263 | * it can be sent out. |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 264 | * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, |
| 265 | * used to indicate that a frame was already retried due to PS |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 266 | * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, |
| 267 | * used to indicate frame should not be encrypted |
Johannes Berg | 3fa5205 | 2009-07-24 13:23:09 +0200 | [diff] [blame] | 268 | * @IEEE80211_TX_CTL_PSPOLL_RESPONSE: (internal?) |
| 269 | * This frame is a response to a PS-poll frame and should be sent |
| 270 | * although the station is in powersave mode. |
Johannes Berg | ad5351d | 2009-08-07 16:42:15 +0200 | [diff] [blame] | 271 | * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the |
| 272 | * transmit function after the current frame, this can be used |
| 273 | * by drivers to kick the DMA queue only if unset or when the |
| 274 | * queue gets full. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 275 | */ |
| 276 | enum mac80211_tx_control_flags { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 277 | IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 278 | IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), |
| 279 | IEEE80211_TX_CTL_NO_ACK = BIT(2), |
| 280 | IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), |
| 281 | IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), |
| 282 | IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), |
| 283 | IEEE80211_TX_CTL_AMPDU = BIT(6), |
| 284 | IEEE80211_TX_CTL_INJECTED = BIT(7), |
| 285 | IEEE80211_TX_STAT_TX_FILTERED = BIT(8), |
| 286 | IEEE80211_TX_STAT_ACK = BIT(9), |
| 287 | IEEE80211_TX_STAT_AMPDU = BIT(10), |
| 288 | IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), |
| 289 | IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), |
Johannes Berg | 2b874e8 | 2009-03-23 14:10:22 +0100 | [diff] [blame] | 290 | IEEE80211_TX_INTFL_RCALGO = BIT(13), |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 291 | IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 292 | IEEE80211_TX_INTFL_RETRIED = BIT(15), |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 293 | IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), |
Johannes Berg | 3fa5205 | 2009-07-24 13:23:09 +0200 | [diff] [blame] | 294 | IEEE80211_TX_CTL_PSPOLL_RESPONSE = BIT(17), |
Johannes Berg | ad5351d | 2009-08-07 16:42:15 +0200 | [diff] [blame] | 295 | IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 296 | }; |
| 297 | |
Sujith | 2134e7e | 2009-01-22 09:00:52 +0530 | [diff] [blame] | 298 | /** |
| 299 | * enum mac80211_rate_control_flags - per-rate flags set by the |
| 300 | * Rate Control algorithm. |
| 301 | * |
| 302 | * These flags are set by the Rate control algorithm for each rate during tx, |
| 303 | * in the @flags member of struct ieee80211_tx_rate. |
| 304 | * |
| 305 | * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. |
| 306 | * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. |
| 307 | * This is set if the current BSS requires ERP protection. |
| 308 | * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. |
| 309 | * @IEEE80211_TX_RC_MCS: HT rate. |
| 310 | * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in |
| 311 | * Greenfield mode. |
| 312 | * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. |
| 313 | * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the |
| 314 | * adjacent 20 MHz channels, if the current channel type is |
| 315 | * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. |
| 316 | * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. |
| 317 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 318 | enum mac80211_rate_control_flags { |
| 319 | IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), |
| 320 | IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), |
| 321 | IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), |
| 322 | |
| 323 | /* rate index is an MCS rate number instead of an index */ |
| 324 | IEEE80211_TX_RC_MCS = BIT(3), |
| 325 | IEEE80211_TX_RC_GREEN_FIELD = BIT(4), |
| 326 | IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), |
| 327 | IEEE80211_TX_RC_DUP_DATA = BIT(6), |
| 328 | IEEE80211_TX_RC_SHORT_GI = BIT(7), |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 329 | }; |
| 330 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 331 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 332 | /* there are 40 bytes if you don't need the rateset to be kept */ |
| 333 | #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 334 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 335 | /* if you do need the rateset, then you have less space */ |
| 336 | #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 |
| 337 | |
| 338 | /* maximum number of rate stages */ |
| 339 | #define IEEE80211_TX_MAX_RATES 5 |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 340 | |
| 341 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 342 | * struct ieee80211_tx_rate - rate selection/status |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 343 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 344 | * @idx: rate index to attempt to send with |
| 345 | * @flags: rate control flags (&enum mac80211_rate_control_flags) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 346 | * @count: number of tries in this rate before going to the next rate |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 347 | * |
| 348 | * A value of -1 for @idx indicates an invalid rate and, if used |
| 349 | * in an array of retry rates, that no more rates should be tried. |
| 350 | * |
| 351 | * When used for transmit status reporting, the driver should |
| 352 | * always report the rate along with the flags it used. |
Johannes Berg | c555b9b | 2009-08-07 16:23:43 +0200 | [diff] [blame] | 353 | * |
| 354 | * &struct ieee80211_tx_info contains an array of these structs |
| 355 | * in the control information, and it will be filled by the rate |
| 356 | * control algorithm according to what should be sent. For example, |
| 357 | * if this array contains, in the format { <idx>, <count> } the |
| 358 | * information |
| 359 | * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } |
| 360 | * then this means that the frame should be transmitted |
| 361 | * up to twice at rate 3, up to twice at rate 2, and up to four |
| 362 | * times at rate 1 if it doesn't get acknowledged. Say it gets |
| 363 | * acknowledged by the peer after the fifth attempt, the status |
| 364 | * information should then contain |
| 365 | * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... |
| 366 | * since it was transmitted twice at rate 3, twice at rate 2 |
| 367 | * and once at rate 1 after which we received an acknowledgement. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 368 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 369 | struct ieee80211_tx_rate { |
| 370 | s8 idx; |
| 371 | u8 count; |
| 372 | u8 flags; |
Felix Fietkau | 4821277 | 2008-11-03 21:05:01 +0100 | [diff] [blame] | 373 | } __attribute__((packed)); |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 374 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 375 | /** |
| 376 | * struct ieee80211_tx_info - skb transmit information |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 377 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 378 | * This structure is placed in skb->cb for three uses: |
| 379 | * (1) mac80211 TX control - mac80211 tells the driver what to do |
| 380 | * (2) driver internal use (if applicable) |
| 381 | * (3) TX status information - driver tells mac80211 what happened |
| 382 | * |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 383 | * The TX control's sta pointer is only valid during the ->tx call, |
| 384 | * it may be NULL. |
| 385 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 386 | * @flags: transmit info flags, defined above |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 387 | * @band: the band to transmit on (use for checking for races) |
Johannes Berg | 0f4ac38 | 2008-10-09 12:18:04 +0200 | [diff] [blame] | 388 | * @antenna_sel_tx: antenna to use, 0 for automatic diversity |
Kalle Valo | 8bef7a1 | 2008-11-30 20:56:28 +0200 | [diff] [blame] | 389 | * @pad: padding, ignore |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 390 | * @control: union for control data |
| 391 | * @status: union for status data |
| 392 | * @driver_data: array of driver_data pointers |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 393 | * @ampdu_ack_len: number of acked aggregated frames. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 394 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. |
| 395 | * @ampdu_ack_map: block ack bit map for the aggregation. |
| 396 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 397 | * @ampdu_len: number of aggregated frames. |
| 398 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 399 | * @ack_signal: signal strength of the ACK frame |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 400 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 401 | struct ieee80211_tx_info { |
| 402 | /* common information */ |
| 403 | u32 flags; |
| 404 | u8 band; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 405 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 406 | u8 antenna_sel_tx; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 407 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 408 | /* 2 byte hole */ |
John W. Linville | 6272710 | 2008-11-12 10:01:41 -0500 | [diff] [blame] | 409 | u8 pad[2]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 410 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 411 | union { |
| 412 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 413 | union { |
| 414 | /* rate control */ |
| 415 | struct { |
| 416 | struct ieee80211_tx_rate rates[ |
| 417 | IEEE80211_TX_MAX_RATES]; |
| 418 | s8 rts_cts_rate_idx; |
| 419 | }; |
| 420 | /* only needed before rate control */ |
| 421 | unsigned long jiffies; |
| 422 | }; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 423 | /* NB: vif can be NULL for injected frames */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 424 | struct ieee80211_vif *vif; |
| 425 | struct ieee80211_key_conf *hw_key; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 426 | struct ieee80211_sta *sta; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 427 | } control; |
| 428 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 429 | struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; |
| 430 | u8 ampdu_ack_len; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 431 | u64 ampdu_ack_map; |
| 432 | int ack_signal; |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 433 | u8 ampdu_len; |
| 434 | /* 7 bytes free */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 435 | } status; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 436 | struct { |
| 437 | struct ieee80211_tx_rate driver_rates[ |
| 438 | IEEE80211_TX_MAX_RATES]; |
| 439 | void *rate_driver_data[ |
| 440 | IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; |
| 441 | }; |
| 442 | void *driver_data[ |
| 443 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 444 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 445 | }; |
| 446 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 447 | static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) |
| 448 | { |
| 449 | return (struct ieee80211_tx_info *)skb->cb; |
| 450 | } |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 451 | |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 452 | static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) |
| 453 | { |
| 454 | return (struct ieee80211_rx_status *)skb->cb; |
| 455 | } |
| 456 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 457 | /** |
| 458 | * ieee80211_tx_info_clear_status - clear TX status |
| 459 | * |
| 460 | * @info: The &struct ieee80211_tx_info to be cleared. |
| 461 | * |
| 462 | * When the driver passes an skb back to mac80211, it must report |
| 463 | * a number of things in TX status. This function clears everything |
| 464 | * in the TX status but the rate control information (it does clear |
| 465 | * the count since you need to fill that in anyway). |
| 466 | * |
| 467 | * NOTE: You can only use this function if you do NOT use |
| 468 | * info->driver_data! Use info->rate_driver_data |
| 469 | * instead if you need only the less space that allows. |
| 470 | */ |
| 471 | static inline void |
| 472 | ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) |
| 473 | { |
| 474 | int i; |
| 475 | |
| 476 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 477 | offsetof(struct ieee80211_tx_info, control.rates)); |
| 478 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 479 | offsetof(struct ieee80211_tx_info, driver_rates)); |
| 480 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); |
| 481 | /* clear the rate counts */ |
| 482 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) |
| 483 | info->status.rates[i].count = 0; |
| 484 | |
| 485 | BUILD_BUG_ON( |
| 486 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); |
| 487 | memset(&info->status.ampdu_ack_len, 0, |
| 488 | sizeof(struct ieee80211_tx_info) - |
| 489 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); |
| 490 | } |
| 491 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 492 | |
| 493 | /** |
| 494 | * enum mac80211_rx_flags - receive flags |
| 495 | * |
| 496 | * These flags are used with the @flag member of &struct ieee80211_rx_status. |
| 497 | * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. |
| 498 | * Use together with %RX_FLAG_MMIC_STRIPPED. |
| 499 | * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 500 | * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, |
| 501 | * verification has been done by the hardware. |
| 502 | * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. |
| 503 | * If this flag is set, the stack cannot do any replay detection |
| 504 | * hence the driver or hardware will have to do that. |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 505 | * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on |
| 506 | * the frame. |
| 507 | * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on |
| 508 | * the frame. |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 509 | * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 510 | * is valid. This is useful in monitor mode and necessary for beacon frames |
| 511 | * to enable IBSS merging. |
Bruno Randolf | b4f28bb | 2008-07-30 17:19:55 +0200 | [diff] [blame] | 512 | * @RX_FLAG_SHORTPRE: Short preamble was used for this frame |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 513 | * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index |
| 514 | * @RX_FLAG_40MHZ: HT40 (40 MHz) was used |
| 515 | * @RX_FLAG_SHORT_GI: Short guard interval was used |
Johannes Berg | 8c0c709 | 2009-11-25 17:46:15 +0100 | [diff] [blame] | 516 | * @RX_FLAG_INTERNAL_CMTR: set internally after frame was reported |
| 517 | * on cooked monitor to avoid double-reporting it for multiple |
| 518 | * virtual interfaces |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 519 | */ |
| 520 | enum mac80211_rx_flags { |
| 521 | RX_FLAG_MMIC_ERROR = 1<<0, |
| 522 | RX_FLAG_DECRYPTED = 1<<1, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 523 | RX_FLAG_MMIC_STRIPPED = 1<<3, |
| 524 | RX_FLAG_IV_STRIPPED = 1<<4, |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 525 | RX_FLAG_FAILED_FCS_CRC = 1<<5, |
| 526 | RX_FLAG_FAILED_PLCP_CRC = 1<<6, |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 527 | RX_FLAG_TSFT = 1<<7, |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 528 | RX_FLAG_SHORTPRE = 1<<8, |
| 529 | RX_FLAG_HT = 1<<9, |
| 530 | RX_FLAG_40MHZ = 1<<10, |
| 531 | RX_FLAG_SHORT_GI = 1<<11, |
Johannes Berg | 8c0c709 | 2009-11-25 17:46:15 +0100 | [diff] [blame] | 532 | RX_FLAG_INTERNAL_CMTR = 1<<12, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 533 | }; |
| 534 | |
| 535 | /** |
| 536 | * struct ieee80211_rx_status - receive status |
| 537 | * |
| 538 | * The low-level driver should provide this information (the subset |
| 539 | * supported by hardware) to the 802.11 code with each received |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 540 | * frame, in the skb's control buffer (cb). |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 541 | * |
Bruno Randolf | c132bec | 2008-02-18 11:20:51 +0900 | [diff] [blame] | 542 | * @mactime: value in microseconds of the 64-bit Time Synchronization Function |
| 543 | * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 544 | * @band: the active band when this frame was received |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 545 | * @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] | 546 | * @signal: signal strength when receiving this frame, either in dBm, in dB or |
| 547 | * unspecified depending on the hardware capabilities flags |
| 548 | * @IEEE80211_HW_SIGNAL_* |
| 549 | * @noise: noise when receiving this frame, in dBm. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 550 | * @antenna: antenna used |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 551 | * @rate_idx: index of data rate into band's supported rates or MCS index if |
| 552 | * HT rates are use (RX_FLAG_HT) |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 553 | * @flag: %RX_FLAG_* |
| 554 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 555 | struct ieee80211_rx_status { |
| 556 | u64 mactime; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 557 | enum ieee80211_band band; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 558 | int freq; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 559 | int signal; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 560 | int noise; |
| 561 | int antenna; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 562 | int rate_idx; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 563 | int flag; |
| 564 | }; |
| 565 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 566 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 567 | * enum ieee80211_conf_flags - configuration flags |
| 568 | * |
| 569 | * Flags to define PHY configuration options |
| 570 | * |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 571 | * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this |
| 572 | * to determine for example whether to calculate timestamps for packets |
| 573 | * or not, do not use instead of filter flags! |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 574 | * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only) |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 575 | * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set |
| 576 | * the driver should be prepared to handle configuration requests but |
| 577 | * may turn the device off as much as possible. Typically, this flag will |
| 578 | * be set when an interface is set UP but not associated or scanning, but |
| 579 | * it can also be unset in that case when monitor interfaces are active. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 580 | */ |
| 581 | enum ieee80211_conf_flags { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 582 | IEEE80211_CONF_MONITOR = (1<<0), |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 583 | IEEE80211_CONF_PS = (1<<1), |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 584 | IEEE80211_CONF_IDLE = (1<<2), |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 585 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 586 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 587 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 588 | /** |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 589 | * enum ieee80211_conf_changed - denotes which configuration changed |
| 590 | * |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 591 | * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 592 | * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed |
Johannes Berg | e255d5e | 2009-04-22 12:40:07 +0200 | [diff] [blame] | 593 | * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 594 | * @IEEE80211_CONF_CHANGE_POWER: the TX power changed |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 595 | * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 596 | * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 597 | * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 598 | */ |
| 599 | enum ieee80211_conf_changed { |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 600 | IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 601 | IEEE80211_CONF_CHANGE_MONITOR = BIT(3), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 602 | IEEE80211_CONF_CHANGE_PS = BIT(4), |
Johannes Berg | e255d5e | 2009-04-22 12:40:07 +0200 | [diff] [blame] | 603 | IEEE80211_CONF_CHANGE_POWER = BIT(5), |
| 604 | IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), |
| 605 | IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 606 | IEEE80211_CONF_CHANGE_IDLE = BIT(8), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 607 | }; |
| 608 | |
| 609 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 610 | * struct ieee80211_conf - configuration of the device |
| 611 | * |
| 612 | * This struct indicates how the driver shall configure the hardware. |
| 613 | * |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 614 | * @flags: configuration flags defined above |
| 615 | * |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 616 | * @listen_interval: listen interval in units of beacon interval |
Johannes Berg | 9ccebe6 | 2009-04-23 10:32:36 +0200 | [diff] [blame] | 617 | * @max_sleep_period: the maximum number of beacon intervals to sleep for |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 618 | * before checking the beacon for a TIM bit (managed mode only); this |
| 619 | * value will be only achievable between DTIM frames, the hardware |
| 620 | * needs to check for the multicast traffic bit in DTIM beacons. |
| 621 | * This variable is valid only when the CONF_PS flag is set. |
| 622 | * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the |
| 623 | * powersave documentation below. This variable is valid only when |
| 624 | * the CONF_PS flag is set. |
| 625 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 626 | * @power_level: requested transmit power (in dBm) |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 627 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 628 | * @channel: the channel to tune to |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 629 | * @channel_type: the channel (HT) type |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 630 | * |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 631 | * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame |
| 632 | * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, |
| 633 | * but actually means the number of transmissions not the number of retries |
| 634 | * @short_frame_max_tx_count: Maximum number of transmissions for a "short" |
| 635 | * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the |
| 636 | * number of transmissions not the number of retries |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 637 | */ |
| 638 | struct ieee80211_conf { |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 639 | u32 flags; |
Johannes Berg | 46f2c4b | 2009-01-06 18:13:18 +0100 | [diff] [blame] | 640 | int power_level, dynamic_ps_timeout; |
Johannes Berg | 9ccebe6 | 2009-04-23 10:32:36 +0200 | [diff] [blame] | 641 | int max_sleep_period; |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 642 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 643 | u16 listen_interval; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 644 | |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 645 | u8 long_frame_max_tx_count, short_frame_max_tx_count; |
| 646 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 647 | struct ieee80211_channel *channel; |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 648 | enum nl80211_channel_type channel_type; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 649 | }; |
| 650 | |
| 651 | /** |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 652 | * struct ieee80211_vif - per-interface data |
| 653 | * |
| 654 | * Data in this structure is continually present for driver |
| 655 | * use during the life of a virtual interface. |
| 656 | * |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 657 | * @type: type of this virtual interface |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 658 | * @bss_conf: BSS configuration for this interface, either our own |
| 659 | * or the BSS we're associated to |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 660 | * @drv_priv: data area for driver use, will always be aligned to |
| 661 | * sizeof(void *). |
| 662 | */ |
| 663 | struct ieee80211_vif { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 664 | enum nl80211_iftype type; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 665 | struct ieee80211_bss_conf bss_conf; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 666 | /* must be last */ |
| 667 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 668 | }; |
| 669 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 670 | static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) |
| 671 | { |
| 672 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 673 | return vif->type == NL80211_IFTYPE_MESH_POINT; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 674 | #endif |
| 675 | return false; |
| 676 | } |
| 677 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 678 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 679 | * struct ieee80211_if_init_conf - initial configuration of an interface |
| 680 | * |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 681 | * @vif: pointer to a driver-use per-interface structure. The pointer |
| 682 | * itself is also used for various functions including |
| 683 | * ieee80211_beacon_get() and ieee80211_get_buffered_bc(). |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 684 | * @type: one of &enum nl80211_iftype constants. Determines the type of |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 685 | * added/removed interface. |
| 686 | * @mac_addr: pointer to MAC address of the interface. This pointer is valid |
| 687 | * until the interface is removed (i.e. it cannot be used after |
| 688 | * remove_interface() callback was called for this interface). |
| 689 | * |
| 690 | * This structure is used in add_interface() and remove_interface() |
| 691 | * callbacks of &struct ieee80211_hw. |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 692 | * |
| 693 | * When you allow multiple interfaces to be added to your PHY, take care |
| 694 | * that the hardware can actually handle multiple MAC addresses. However, |
| 695 | * also take care that when there's no interface left with mac_addr != %NULL |
| 696 | * you remove the MAC address from the device to avoid acknowledging packets |
| 697 | * in pure monitor mode. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 698 | */ |
| 699 | struct ieee80211_if_init_conf { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 700 | enum nl80211_iftype type; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 701 | struct ieee80211_vif *vif; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 702 | void *mac_addr; |
| 703 | }; |
| 704 | |
| 705 | /** |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 706 | * enum ieee80211_key_alg - key algorithm |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 707 | * @ALG_WEP: WEP40 or WEP104 |
| 708 | * @ALG_TKIP: TKIP |
| 709 | * @ALG_CCMP: CCMP (AES) |
Jouni Malinen | 3cfcf6ac | 2009-01-08 13:32:02 +0200 | [diff] [blame] | 710 | * @ALG_AES_CMAC: AES-128-CMAC |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 711 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 712 | enum ieee80211_key_alg { |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 713 | ALG_WEP, |
| 714 | ALG_TKIP, |
| 715 | ALG_CCMP, |
Jouni Malinen | 3cfcf6ac | 2009-01-08 13:32:02 +0200 | [diff] [blame] | 716 | ALG_AES_CMAC, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 717 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 718 | |
Emmanuel Grumbach | 23976ef | 2008-06-28 02:50:13 +0300 | [diff] [blame] | 719 | /** |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 720 | * enum ieee80211_key_flags - key flags |
| 721 | * |
| 722 | * These flags are used for communication about keys between the driver |
| 723 | * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. |
| 724 | * |
| 725 | * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates |
| 726 | * that the STA this key will be used with could be using QoS. |
| 727 | * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the |
| 728 | * driver to indicate that it requires IV generation for this |
| 729 | * particular key. |
| 730 | * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by |
| 731 | * the driver for a TKIP key if it requires Michael MIC |
| 732 | * generation in software. |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 733 | * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates |
| 734 | * that the key is pairwise rather then a shared key. |
Jouni Malinen | 1f7d77a | 2009-01-08 13:32:10 +0200 | [diff] [blame] | 735 | * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a |
| 736 | * CCMP key if it requires CCMP encryption of management frames (MFP) to |
| 737 | * be done in software. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 738 | */ |
| 739 | enum ieee80211_key_flags { |
| 740 | IEEE80211_KEY_FLAG_WMM_STA = 1<<0, |
| 741 | IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, |
| 742 | IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 743 | IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, |
Jouni Malinen | 1f7d77a | 2009-01-08 13:32:10 +0200 | [diff] [blame] | 744 | IEEE80211_KEY_FLAG_SW_MGMT = 1<<4, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 745 | }; |
| 746 | |
| 747 | /** |
| 748 | * struct ieee80211_key_conf - key information |
| 749 | * |
| 750 | * This key information is given by mac80211 to the driver by |
| 751 | * the set_key() callback in &struct ieee80211_ops. |
| 752 | * |
| 753 | * @hw_key_idx: To be set by the driver, this is the key index the driver |
| 754 | * 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] | 755 | * encrypted in hardware. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 756 | * @alg: The key algorithm. |
| 757 | * @flags: key flags, see &enum ieee80211_key_flags. |
| 758 | * @keyidx: the key index (0-3) |
| 759 | * @keylen: key material length |
Luis R. Rodriguez | ffd7891 | 2008-06-21 10:02:46 -0400 | [diff] [blame] | 760 | * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) |
| 761 | * data block: |
| 762 | * - Temporal Encryption Key (128 bits) |
| 763 | * - Temporal Authenticator Tx MIC Key (64 bits) |
| 764 | * - Temporal Authenticator Rx MIC Key (64 bits) |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 765 | * @icv_len: The ICV length for this key type |
| 766 | * @iv_len: The IV length for this key type |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 767 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 768 | struct ieee80211_key_conf { |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 769 | enum ieee80211_key_alg alg; |
Felix Fietkau | 76708de | 2008-10-05 18:02:48 +0200 | [diff] [blame] | 770 | u8 icv_len; |
| 771 | u8 iv_len; |
Johannes Berg | 6a7664d | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 772 | u8 hw_key_idx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 773 | u8 flags; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 774 | s8 keyidx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 775 | u8 keylen; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 776 | u8 key[0]; |
| 777 | }; |
| 778 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 779 | /** |
| 780 | * enum set_key_cmd - key command |
| 781 | * |
| 782 | * Used with the set_key() callback in &struct ieee80211_ops, this |
| 783 | * indicates whether a key is being removed or added. |
| 784 | * |
| 785 | * @SET_KEY: a key is set |
| 786 | * @DISABLE_KEY: a key must be disabled |
| 787 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 788 | enum set_key_cmd { |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 789 | SET_KEY, DISABLE_KEY, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 790 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 791 | |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 792 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 793 | * struct ieee80211_sta - station table entry |
| 794 | * |
| 795 | * A station table entry represents a station we are possibly |
| 796 | * communicating with. Since stations are RCU-managed in |
| 797 | * mac80211, any ieee80211_sta pointer you get access to must |
| 798 | * either be protected by rcu_read_lock() explicitly or implicitly, |
| 799 | * or you must take good care to not use such a pointer after a |
| 800 | * call to your sta_notify callback that removed it. |
| 801 | * |
| 802 | * @addr: MAC address |
| 803 | * @aid: AID we assigned to the station if we're an AP |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 804 | * @supp_rates: Bitmap of supported rates (per band) |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 805 | * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 806 | * @drv_priv: data area for driver use, will always be aligned to |
| 807 | * sizeof(void *), size is determined in hw information. |
| 808 | */ |
| 809 | struct ieee80211_sta { |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 810 | u32 supp_rates[IEEE80211_NUM_BANDS]; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 811 | u8 addr[ETH_ALEN]; |
| 812 | u16 aid; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 813 | struct ieee80211_sta_ht_cap ht_cap; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 814 | |
| 815 | /* must be last */ |
| 816 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 817 | }; |
| 818 | |
| 819 | /** |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 820 | * enum sta_notify_cmd - sta notify command |
| 821 | * |
| 822 | * Used with the sta_notify() callback in &struct ieee80211_ops, this |
Christian Lamparter | 89fad57 | 2008-12-09 16:28:06 +0100 | [diff] [blame] | 823 | * indicates addition and removal of a station to station table, |
| 824 | * or if a associated station made a power state transition. |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 825 | * |
| 826 | * @STA_NOTIFY_ADD: a station was added to the station table |
| 827 | * @STA_NOTIFY_REMOVE: a station being removed from the station table |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 828 | * @STA_NOTIFY_SLEEP: a station is now sleeping |
| 829 | * @STA_NOTIFY_AWAKE: a sleeping station woke up |
| 830 | */ |
Christian Lamparter | 89fad57 | 2008-12-09 16:28:06 +0100 | [diff] [blame] | 831 | enum sta_notify_cmd { |
| 832 | STA_NOTIFY_ADD, STA_NOTIFY_REMOVE, |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 833 | STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, |
| 834 | }; |
| 835 | |
| 836 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 837 | * enum ieee80211_tkip_key_type - get tkip key |
| 838 | * |
| 839 | * Used by drivers which need to get a tkip key for skb. Some drivers need a |
| 840 | * phase 1 key, others need a phase 2 key. A single function allows the driver |
| 841 | * to get the key, this enum indicates what type of key is required. |
| 842 | * |
| 843 | * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key |
| 844 | * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key |
| 845 | */ |
| 846 | enum ieee80211_tkip_key_type { |
| 847 | IEEE80211_TKIP_P1_KEY, |
| 848 | IEEE80211_TKIP_P2_KEY, |
| 849 | }; |
| 850 | |
| 851 | /** |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 852 | * enum ieee80211_hw_flags - hardware flags |
| 853 | * |
| 854 | * These flags are used to indicate hardware capabilities to |
| 855 | * the stack. Generally, flags here should have their meaning |
| 856 | * done in a way that the simplest hardware doesn't need setting |
| 857 | * any particular flags. There are some exceptions to this rule, |
| 858 | * however, so you are advised to review these flags carefully. |
| 859 | * |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 860 | * @IEEE80211_HW_HAS_RATE_CONTROL: |
| 861 | * The hardware or firmware includes rate control, and cannot be |
| 862 | * controlled by the stack. As such, no rate control algorithm |
| 863 | * should be instantiated, and the TX rate reported to userspace |
| 864 | * will be taken from the TX status instead of the rate control |
| 865 | * algorithm. |
| 866 | * Note that this requires that the driver implement a number of |
| 867 | * callbacks so it has the correct information, it needs to have |
| 868 | * the @set_rts_threshold callback and must look at the BSS config |
| 869 | * @use_cts_prot for G/N protection, @use_short_slot for slot |
| 870 | * timing in 2.4 GHz and @use_short_preamble for preambles for |
| 871 | * CCK frames. |
| 872 | * |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 873 | * @IEEE80211_HW_RX_INCLUDES_FCS: |
| 874 | * Indicates that received frames passed to the stack include |
| 875 | * the FCS at the end. |
| 876 | * |
| 877 | * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: |
| 878 | * Some wireless LAN chipsets buffer broadcast/multicast frames |
| 879 | * for power saving stations in the hardware/firmware and others |
| 880 | * rely on the host system for such buffering. This option is used |
| 881 | * to configure the IEEE 802.11 upper layer to buffer broadcast and |
| 882 | * multicast frames when there are power saving stations so that |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 883 | * the driver can fetch them with ieee80211_get_buffered_bc(). |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 884 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 885 | * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: |
| 886 | * Hardware is not capable of short slot operation on the 2.4 GHz band. |
| 887 | * |
| 888 | * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: |
| 889 | * Hardware is not capable of receiving frames with short preamble on |
| 890 | * the 2.4 GHz band. |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 891 | * |
| 892 | * @IEEE80211_HW_SIGNAL_UNSPEC: |
| 893 | * Hardware can provide signal values but we don't know its units. We |
| 894 | * expect values between 0 and @max_signal. |
| 895 | * If possible please provide dB or dBm instead. |
| 896 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 897 | * @IEEE80211_HW_SIGNAL_DBM: |
| 898 | * Hardware gives signal values in dBm, decibel difference from |
| 899 | * one milliwatt. This is the preferred method since it is standardized |
| 900 | * between different devices. @max_signal does not need to be set. |
| 901 | * |
| 902 | * @IEEE80211_HW_NOISE_DBM: |
| 903 | * Hardware can provide noise (radio interference) values in units dBm, |
| 904 | * decibel difference from one milliwatt. |
Tomas Winkler | 06ff47b | 2008-06-18 17:53:44 +0300 | [diff] [blame] | 905 | * |
| 906 | * @IEEE80211_HW_SPECTRUM_MGMT: |
| 907 | * Hardware supports spectrum management defined in 802.11h |
| 908 | * Measurement, Channel Switch, Quieting, TPC |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 909 | * |
| 910 | * @IEEE80211_HW_AMPDU_AGGREGATION: |
| 911 | * Hardware supports 11n A-MPDU aggregation. |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 912 | * |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 913 | * @IEEE80211_HW_SUPPORTS_PS: |
| 914 | * Hardware has power save support (i.e. can go to sleep). |
| 915 | * |
| 916 | * @IEEE80211_HW_PS_NULLFUNC_STACK: |
| 917 | * Hardware requires nullfunc frame handling in stack, implies |
| 918 | * stack support for dynamic PS. |
| 919 | * |
| 920 | * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: |
| 921 | * Hardware has support for dynamic PS. |
Jouni Malinen | 4375d08 | 2009-01-08 13:32:11 +0200 | [diff] [blame] | 922 | * |
| 923 | * @IEEE80211_HW_MFP_CAPABLE: |
| 924 | * Hardware supports management frame protection (MFP, IEEE 802.11w). |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 925 | * |
| 926 | * @IEEE80211_HW_BEACON_FILTER: |
| 927 | * Hardware supports dropping of irrelevant beacon frames to |
| 928 | * avoid waking up cpu. |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 929 | */ |
| 930 | enum ieee80211_hw_flags { |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 931 | IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 932 | IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, |
| 933 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 934 | IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, |
| 935 | IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 936 | IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, |
Johannes Berg | 7fee537 | 2009-01-30 11:13:06 +0100 | [diff] [blame] | 937 | IEEE80211_HW_SIGNAL_DBM = 1<<6, |
| 938 | IEEE80211_HW_NOISE_DBM = 1<<7, |
| 939 | IEEE80211_HW_SPECTRUM_MGMT = 1<<8, |
| 940 | IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, |
| 941 | IEEE80211_HW_SUPPORTS_PS = 1<<10, |
| 942 | IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, |
| 943 | IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, |
| 944 | IEEE80211_HW_MFP_CAPABLE = 1<<13, |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 945 | IEEE80211_HW_BEACON_FILTER = 1<<14, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 946 | }; |
| 947 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 948 | /** |
| 949 | * struct ieee80211_hw - hardware information and state |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 950 | * |
| 951 | * This structure contains the configuration and hardware |
| 952 | * information for an 802.11 PHY. |
| 953 | * |
| 954 | * @wiphy: This points to the &struct wiphy allocated for this |
| 955 | * 802.11 PHY. You must fill in the @perm_addr and @dev |
| 956 | * members of this structure using SET_IEEE80211_DEV() |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 957 | * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported |
| 958 | * bands (with channels, bitrates) are registered here. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 959 | * |
| 960 | * @conf: &struct ieee80211_conf, device configuration, don't use. |
| 961 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 962 | * @priv: pointer to private area that was allocated for driver use |
| 963 | * along with this structure. |
| 964 | * |
| 965 | * @flags: hardware flags, see &enum ieee80211_hw_flags. |
| 966 | * |
| 967 | * @extra_tx_headroom: headroom to reserve in each transmit skb |
| 968 | * for use by the driver (e.g. for transmit headers.) |
| 969 | * |
| 970 | * @channel_change_time: time (in microseconds) it takes to change channels. |
| 971 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 972 | * @max_signal: Maximum value for signal (rssi) in RX information, used |
| 973 | * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 974 | * |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 975 | * @max_listen_interval: max listen interval in units of beacon interval |
| 976 | * that HW supports |
| 977 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 978 | * @queues: number of available hardware transmit queues for |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 979 | * data packets. WMM/QoS requires at least four, these |
| 980 | * queues need to have configurable access parameters. |
| 981 | * |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 982 | * @rate_control_algorithm: rate control algorithm for this hardware. |
| 983 | * If unset (NULL), the default algorithm will be used. Must be |
| 984 | * set before calling ieee80211_register_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 985 | * |
| 986 | * @vif_data_size: size (in bytes) of the drv_priv data area |
| 987 | * within &struct ieee80211_vif. |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 988 | * @sta_data_size: size (in bytes) of the drv_priv data area |
| 989 | * within &struct ieee80211_sta. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 990 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 991 | * @max_rates: maximum number of alternate rate retry stages |
| 992 | * @max_rate_tries: maximum number of tries for each stage |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 993 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 994 | struct ieee80211_hw { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 995 | struct ieee80211_conf conf; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 996 | struct wiphy *wiphy; |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 997 | const char *rate_control_algorithm; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 998 | void *priv; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 999 | u32 flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1000 | unsigned int extra_tx_headroom; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1001 | int channel_change_time; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1002 | int vif_data_size; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1003 | int sta_data_size; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1004 | u16 queues; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1005 | u16 max_listen_interval; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1006 | s8 max_signal; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1007 | u8 max_rates; |
| 1008 | u8 max_rate_tries; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1009 | }; |
| 1010 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1011 | /** |
Luis R. Rodriguez | 9a95371 | 2009-01-22 15:05:53 -0800 | [diff] [blame] | 1012 | * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy |
| 1013 | * |
| 1014 | * @wiphy: the &struct wiphy which we want to query |
| 1015 | * |
| 1016 | * mac80211 drivers can use this to get to their respective |
| 1017 | * &struct ieee80211_hw. Drivers wishing to get to their own private |
| 1018 | * structure can then access it via hw->priv. Note that mac802111 drivers should |
| 1019 | * not use wiphy_priv() to try to get their private driver structure as this |
| 1020 | * is already used internally by mac80211. |
| 1021 | */ |
| 1022 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); |
| 1023 | |
| 1024 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1025 | * SET_IEEE80211_DEV - set device for 802.11 hardware |
| 1026 | * |
| 1027 | * @hw: the &struct ieee80211_hw to set the device for |
| 1028 | * @dev: the &struct device of this 802.11 device |
| 1029 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1030 | static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) |
| 1031 | { |
| 1032 | set_wiphy_dev(hw->wiphy, dev); |
| 1033 | } |
| 1034 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1035 | /** |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1036 | * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1037 | * |
| 1038 | * @hw: the &struct ieee80211_hw to set the MAC address for |
| 1039 | * @addr: the address to set |
| 1040 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1041 | static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) |
| 1042 | { |
| 1043 | memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); |
| 1044 | } |
| 1045 | |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1046 | static inline struct ieee80211_rate * |
| 1047 | ieee80211_get_tx_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1048 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1049 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1050 | if (WARN_ON(c->control.rates[0].idx < 0)) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1051 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1052 | return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | static inline struct ieee80211_rate * |
| 1056 | ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1057 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1058 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1059 | if (c->control.rts_cts_rate_idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1060 | return NULL; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1061 | 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] | 1062 | } |
| 1063 | |
| 1064 | static inline struct ieee80211_rate * |
| 1065 | ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 1066 | const struct ieee80211_tx_info *c, int idx) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1067 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1068 | if (c->control.rates[idx + 1].idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1069 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1070 | return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx]; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1071 | } |
| 1072 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1073 | /** |
| 1074 | * DOC: Hardware crypto acceleration |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1075 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1076 | * mac80211 is capable of taking advantage of many hardware |
| 1077 | * acceleration designs for encryption and decryption operations. |
| 1078 | * |
| 1079 | * The set_key() callback in the &struct ieee80211_ops for a given |
| 1080 | * device is called to enable hardware acceleration of encryption and |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1081 | * decryption. The callback takes a @sta parameter that will be NULL |
| 1082 | * for default keys or keys used for transmission only, or point to |
| 1083 | * the station information for the peer for individual keys. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1084 | * Multiple transmission keys with the same key index may be used when |
| 1085 | * VLANs are configured for an access point. |
| 1086 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1087 | * When transmitting, the TX control data will use the @hw_key_idx |
| 1088 | * selected by the driver by modifying the &struct ieee80211_key_conf |
| 1089 | * pointed to by the @key parameter to the set_key() function. |
| 1090 | * |
| 1091 | * The set_key() call for the %SET_KEY command should return 0 if |
| 1092 | * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be |
| 1093 | * added; if you return 0 then hw_key_idx must be assigned to the |
| 1094 | * hardware key index, you are free to use the full u8 range. |
| 1095 | * |
| 1096 | * When the cmd is %DISABLE_KEY then it must succeed. |
| 1097 | * |
| 1098 | * Note that it is permissible to not decrypt a frame even if a key |
| 1099 | * for it has been uploaded to hardware, the stack will not make any |
| 1100 | * decision based on whether a key has been uploaded or not but rather |
| 1101 | * based on the receive flags. |
| 1102 | * |
| 1103 | * The &struct ieee80211_key_conf structure pointed to by the @key |
| 1104 | * parameter is guaranteed to be valid until another call to set_key() |
| 1105 | * removes it, but it can only be used as a cookie to differentiate |
| 1106 | * keys. |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1107 | * |
| 1108 | * In TKIP some HW need to be provided a phase 1 key, for RX decryption |
| 1109 | * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key |
| 1110 | * handler. |
| 1111 | * The update_tkip_key() call updates the driver with the new phase 1 key. |
| 1112 | * This happens everytime the iv16 wraps around (every 65536 packets). The |
| 1113 | * set_key() call will happen only once for each key (unless the AP did |
| 1114 | * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1115 | * provided by update_tkip_key only. The trigger that makes mac80211 call this |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1116 | * handler is software decryption with wrap around of iv16. |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1117 | */ |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1118 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1119 | /** |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1120 | * DOC: Powersave support |
| 1121 | * |
| 1122 | * mac80211 has support for various powersave implementations. |
| 1123 | * |
| 1124 | * First, it can support hardware that handles all powersaving by |
| 1125 | * itself, such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS |
| 1126 | * hardware flag. In that case, it will be told about the desired |
| 1127 | * powersave mode depending on the association status, and the driver |
| 1128 | * must take care of sending nullfunc frames when necessary, i.e. when |
| 1129 | * entering and leaving powersave mode. The driver is required to look at |
| 1130 | * the AID in beacons and signal to the AP that it woke up when it finds |
| 1131 | * traffic directed to it. This mode supports dynamic PS by simply |
| 1132 | * enabling/disabling PS. |
| 1133 | * |
| 1134 | * Additionally, such hardware may set the %IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
| 1135 | * flag to indicate that it can support dynamic PS mode itself (see below). |
| 1136 | * |
| 1137 | * Other hardware designs cannot send nullfunc frames by themselves and also |
| 1138 | * need software support for parsing the TIM bitmap. This is also supported |
| 1139 | * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and |
| 1140 | * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still |
Johannes Berg | 955394c | 2009-04-16 17:04:25 +0200 | [diff] [blame] | 1141 | * required to pass up beacons. The hardware is still required to handle |
| 1142 | * waking up for multicast traffic; if it cannot the driver must handle that |
| 1143 | * as best as it can, mac80211 is too slow. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1144 | * |
| 1145 | * Dynamic powersave mode is an extension to normal powersave mode in which |
| 1146 | * the hardware stays awake for a user-specified period of time after sending |
| 1147 | * a frame so that reply frames need not be buffered and therefore delayed |
| 1148 | * to the next wakeup. This can either be supported by hardware, in which case |
| 1149 | * the driver needs to look at the @dynamic_ps_timeout hardware configuration |
| 1150 | * value, or by the stack if all nullfunc handling is in the stack. |
| 1151 | */ |
| 1152 | |
| 1153 | /** |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1154 | * DOC: Beacon filter support |
| 1155 | * |
| 1156 | * Some hardware have beacon filter support to reduce host cpu wakeups |
| 1157 | * which will reduce system power consumption. It usuallly works so that |
| 1158 | * the firmware creates a checksum of the beacon but omits all constantly |
| 1159 | * changing elements (TSF, TIM etc). Whenever the checksum changes the |
| 1160 | * beacon is forwarded to the host, otherwise it will be just dropped. That |
| 1161 | * way the host will only receive beacons where some relevant information |
| 1162 | * (for example ERP protection or WMM settings) have changed. |
| 1163 | * |
Johannes Berg | 955394c | 2009-04-16 17:04:25 +0200 | [diff] [blame] | 1164 | * Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER |
| 1165 | * hardware capability. The driver needs to enable beacon filter support |
| 1166 | * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When |
| 1167 | * power save is enabled, the stack will not check for beacon loss and the |
| 1168 | * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). |
| 1169 | * |
| 1170 | * The time (or number of beacons missed) until the firmware notifies the |
| 1171 | * driver of a beacon loss event (which in turn causes the driver to call |
| 1172 | * ieee80211_beacon_loss()) should be configurable and will be controlled |
| 1173 | * by mac80211 and the roaming algorithm in the future. |
| 1174 | * |
| 1175 | * Since there may be constantly changing information elements that nothing |
| 1176 | * in the software stack cares about, we will, in the future, have mac80211 |
| 1177 | * tell the driver which information elements are interesting in the sense |
| 1178 | * that we want to see changes in them. This will include |
| 1179 | * - a list of information element IDs |
| 1180 | * - a list of OUIs for the vendor information element |
| 1181 | * |
| 1182 | * Ideally, the hardware would filter out any beacons without changes in the |
| 1183 | * requested elements, but if it cannot support that it may, at the expense |
| 1184 | * of some efficiency, filter out only a subset. For example, if the device |
| 1185 | * doesn't support checking for OUIs it should pass up all changes in all |
| 1186 | * vendor information elements. |
| 1187 | * |
| 1188 | * Note that change, for the sake of simplification, also includes information |
| 1189 | * elements appearing or disappearing from the beacon. |
| 1190 | * |
| 1191 | * Some hardware supports an "ignore list" instead, just make sure nothing |
| 1192 | * that was requested is on the ignore list, and include commonly changing |
| 1193 | * information element IDs in the ignore list, for example 11 (BSS load) and |
| 1194 | * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, |
| 1195 | * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility |
| 1196 | * it could also include some currently unused IDs. |
| 1197 | * |
| 1198 | * |
| 1199 | * In addition to these capabilities, hardware should support notifying the |
| 1200 | * host of changes in the beacon RSSI. This is relevant to implement roaming |
| 1201 | * when no traffic is flowing (when traffic is flowing we see the RSSI of |
| 1202 | * the received data packets). This can consist in notifying the host when |
| 1203 | * the RSSI changes significantly or when it drops below or rises above |
| 1204 | * configurable thresholds. In the future these thresholds will also be |
| 1205 | * configured by mac80211 (which gets them from userspace) to implement |
| 1206 | * them as the roaming algorithm requires. |
| 1207 | * |
| 1208 | * If the hardware cannot implement this, the driver should ask it to |
| 1209 | * periodically pass beacon frames to the host so that software can do the |
| 1210 | * signal strength threshold checking. |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1211 | */ |
| 1212 | |
| 1213 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1214 | * DOC: Frame filtering |
| 1215 | * |
| 1216 | * mac80211 requires to see many management frames for proper |
| 1217 | * operation, and users may want to see many more frames when |
| 1218 | * in monitor mode. However, for best CPU usage and power consumption, |
| 1219 | * having as few frames as possible percolate through the stack is |
| 1220 | * desirable. Hence, the hardware should filter as much as possible. |
| 1221 | * |
| 1222 | * To achieve this, mac80211 uses filter flags (see below) to tell |
| 1223 | * the driver's configure_filter() function which frames should be |
| 1224 | * passed to mac80211 and which should be filtered out. |
| 1225 | * |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1226 | * Before configure_filter() is invoked, the prepare_multicast() |
| 1227 | * callback is invoked with the parameters @mc_count and @mc_list |
| 1228 | * for the combined multicast address list of all virtual interfaces. |
| 1229 | * It's use is optional, and it returns a u64 that is passed to |
| 1230 | * configure_filter(). Additionally, configure_filter() has the |
| 1231 | * arguments @changed_flags telling which flags were changed and |
| 1232 | * @total_flags with the new flag states. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1233 | * |
| 1234 | * If your device has no multicast address filters your driver will |
| 1235 | * need to check both the %FIF_ALLMULTI flag and the @mc_count |
| 1236 | * parameter to see whether multicast frames should be accepted |
| 1237 | * or dropped. |
| 1238 | * |
Michael Buesch | d0f5afb | 2008-02-12 20:12:45 +0100 | [diff] [blame] | 1239 | * All unsupported flags in @total_flags must be cleared. |
| 1240 | * Hardware does not support a flag if it is incapable of _passing_ |
| 1241 | * the frame to the stack. Otherwise the driver must ignore |
| 1242 | * the flag, but not clear it. |
| 1243 | * You must _only_ clear the flag (announce no support for the |
| 1244 | * flag to mac80211) if you are not able to pass the packet type |
| 1245 | * to the stack (so the hardware always filters it). |
| 1246 | * So for example, you should clear @FIF_CONTROL, if your hardware |
| 1247 | * always filters control frames. If your hardware always passes |
| 1248 | * control frames to the kernel and is incapable of filtering them, |
| 1249 | * you do _not_ clear the @FIF_CONTROL flag. |
| 1250 | * This rule applies to all other FIF flags as well. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1251 | */ |
| 1252 | |
| 1253 | /** |
| 1254 | * enum ieee80211_filter_flags - hardware filter flags |
| 1255 | * |
| 1256 | * These flags determine what the filter in hardware should be |
| 1257 | * programmed to let through and what should not be passed to the |
| 1258 | * stack. It is always safe to pass more frames than requested, |
| 1259 | * but this has negative impact on power consumption. |
| 1260 | * |
| 1261 | * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, |
| 1262 | * think of the BSS as your network segment and then this corresponds |
| 1263 | * to the regular ethernet device promiscuous mode. |
| 1264 | * |
| 1265 | * @FIF_ALLMULTI: pass all multicast frames, this is used if requested |
| 1266 | * by the user or if the hardware is not capable of filtering by |
| 1267 | * multicast address. |
| 1268 | * |
| 1269 | * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the |
| 1270 | * %RX_FLAG_FAILED_FCS_CRC for them) |
| 1271 | * |
| 1272 | * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set |
| 1273 | * the %RX_FLAG_FAILED_PLCP_CRC for them |
| 1274 | * |
| 1275 | * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate |
| 1276 | * to the hardware that it should not filter beacons or probe responses |
| 1277 | * by BSSID. Filtering them can greatly reduce the amount of processing |
| 1278 | * mac80211 needs to do and the amount of CPU wakeups, so you should |
| 1279 | * honour this flag if possible. |
| 1280 | * |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1281 | * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS |
| 1282 | * is not set then only those addressed to this station. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1283 | * |
| 1284 | * @FIF_OTHER_BSS: pass frames destined to other BSSes |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1285 | * |
| 1286 | * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only |
| 1287 | * those addressed to this station. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1288 | */ |
| 1289 | enum ieee80211_filter_flags { |
| 1290 | FIF_PROMISC_IN_BSS = 1<<0, |
| 1291 | FIF_ALLMULTI = 1<<1, |
| 1292 | FIF_FCSFAIL = 1<<2, |
| 1293 | FIF_PLCPFAIL = 1<<3, |
| 1294 | FIF_BCN_PRBRESP_PROMISC = 1<<4, |
| 1295 | FIF_CONTROL = 1<<5, |
| 1296 | FIF_OTHER_BSS = 1<<6, |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1297 | FIF_PSPOLL = 1<<7, |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1298 | }; |
| 1299 | |
| 1300 | /** |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1301 | * enum ieee80211_ampdu_mlme_action - A-MPDU actions |
| 1302 | * |
| 1303 | * These flags are used with the ampdu_action() callback in |
| 1304 | * &struct ieee80211_ops to indicate which action is needed. |
Johannes Berg | 827d42c | 2009-11-22 12:28:41 +0100 | [diff] [blame] | 1305 | * |
| 1306 | * Note that drivers MUST be able to deal with a TX aggregation |
| 1307 | * session being stopped even before they OK'ed starting it by |
| 1308 | * calling ieee80211_start_tx_ba_cb(_irqsafe), because the peer |
| 1309 | * might receive the addBA frame and send a delBA right away! |
| 1310 | * |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1311 | * @IEEE80211_AMPDU_RX_START: start Rx aggregation |
| 1312 | * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1313 | * @IEEE80211_AMPDU_TX_START: start Tx aggregation |
| 1314 | * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation |
Johannes Berg | b172023 | 2009-03-23 17:28:39 +0100 | [diff] [blame] | 1315 | * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1316 | */ |
| 1317 | enum ieee80211_ampdu_mlme_action { |
| 1318 | IEEE80211_AMPDU_RX_START, |
| 1319 | IEEE80211_AMPDU_RX_STOP, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1320 | IEEE80211_AMPDU_TX_START, |
| 1321 | IEEE80211_AMPDU_TX_STOP, |
Johannes Berg | b172023 | 2009-03-23 17:28:39 +0100 | [diff] [blame] | 1322 | IEEE80211_AMPDU_TX_OPERATIONAL, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1323 | }; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1324 | |
| 1325 | /** |
| 1326 | * struct ieee80211_ops - callbacks from mac80211 to the driver |
| 1327 | * |
| 1328 | * This structure contains various callbacks that the driver may |
| 1329 | * handle or, in some cases, must handle, for example to configure |
| 1330 | * the hardware to a new channel or to transmit a frame. |
| 1331 | * |
| 1332 | * @tx: Handler that 802.11 module calls for each transmitted frame. |
| 1333 | * skb contains the buffer starting from the IEEE 802.11 header. |
| 1334 | * The low-level driver should send the frame out based on |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1335 | * configuration in the TX control data. This handler should, |
| 1336 | * preferably, never fail and stop queues appropriately, more |
| 1337 | * importantly, however, it must never fail for A-MPDU-queues. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1338 | * This function should return NETDEV_TX_OK except in very |
| 1339 | * limited cases. |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1340 | * Must be implemented and atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1341 | * |
| 1342 | * @start: Called before the first netdevice attached to the hardware |
| 1343 | * is enabled. This should turn on the hardware and must turn on |
| 1344 | * frame reception (for possibly enabled monitor interfaces.) |
| 1345 | * Returns negative error codes, these may be seen in userspace, |
| 1346 | * or zero. |
| 1347 | * When the device is started it should not have a MAC address |
| 1348 | * to avoid acknowledging frames before a non-monitor device |
| 1349 | * is added. |
| 1350 | * Must be implemented. |
| 1351 | * |
| 1352 | * @stop: Called after last netdevice attached to the hardware |
| 1353 | * is disabled. This should turn off the hardware (at least |
| 1354 | * it must turn off frame reception.) |
| 1355 | * May be called right after add_interface if that rejects |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 1356 | * an interface. If you added any work onto the mac80211 workqueue |
| 1357 | * you should ensure to cancel it on this callback. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1358 | * Must be implemented. |
| 1359 | * |
| 1360 | * @add_interface: Called when a netdevice attached to the hardware is |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1361 | * enabled. Because it is not called for monitor mode devices, @start |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1362 | * and @stop must be implemented. |
| 1363 | * The driver should perform any initialization it needs before |
| 1364 | * the device can be enabled. The initial configuration for the |
| 1365 | * interface is given in the conf parameter. |
| 1366 | * The callback may refuse to add an interface by returning a |
| 1367 | * negative error code (which will be seen in userspace.) |
| 1368 | * Must be implemented. |
| 1369 | * |
| 1370 | * @remove_interface: Notifies a driver that an interface is going down. |
| 1371 | * The @stop callback is called after this if it is the last interface |
| 1372 | * and no monitor interfaces are present. |
| 1373 | * When all interfaces are removed, the MAC address in the hardware |
| 1374 | * must be cleared so the device no longer acknowledges packets, |
| 1375 | * the mac_addr member of the conf structure is, however, set to the |
| 1376 | * MAC address of the device going away. |
| 1377 | * Hence, this callback must be implemented. |
| 1378 | * |
| 1379 | * @config: Handler for configuration requests. IEEE 802.11 code calls this |
| 1380 | * function to change hardware configuration, e.g., channel. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1381 | * This function should never fail but returns a negative error code |
| 1382 | * if it does. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1383 | * |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1384 | * @bss_info_changed: Handler for configuration requests related to BSS |
| 1385 | * parameters that may vary during BSS's lifespan, and may affect low |
| 1386 | * level driver (e.g. assoc/disassoc status, erp parameters). |
| 1387 | * This function should not be used if no BSS has been set, unless |
| 1388 | * for association indication. The @changed parameter indicates which |
Reinette Chatre | d18ef29 | 2008-04-09 16:56:15 -0700 | [diff] [blame] | 1389 | * of the bss parameters has changed when a call is made. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1390 | * |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1391 | * @prepare_multicast: Prepare for multicast filter configuration. |
| 1392 | * This callback is optional, and its return value is passed |
| 1393 | * to configure_filter(). This callback must be atomic. |
| 1394 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1395 | * @configure_filter: Configure the device's RX filter. |
| 1396 | * See the section "Frame filtering" for more information. |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1397 | * This callback must be implemented. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1398 | * |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 1399 | * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1400 | * must be set or cleared for a given STA. Must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1401 | * |
| 1402 | * @set_key: See the section "Hardware crypto acceleration" |
| 1403 | * This callback can sleep, and is only called between add_interface |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1404 | * and remove_interface calls, i.e. while the given virtual interface |
| 1405 | * is enabled. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1406 | * Returns a negative error code if the key can't be added. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1407 | * |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1408 | * @update_tkip_key: See the section "Hardware crypto acceleration" |
| 1409 | * This callback will be called in the context of Rx. Called for drivers |
| 1410 | * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. |
| 1411 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1412 | * @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] | 1413 | * the scan state machine in stack. The scan must honour the channel |
Kalle Valo | 9050bdd | 2009-03-22 21:57:21 +0200 | [diff] [blame] | 1414 | * configuration done by the regulatory agent in the wiphy's |
| 1415 | * registered bands. The hardware (or the driver) needs to make sure |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1416 | * that power save is disabled. |
| 1417 | * The @req ie/ie_len members are rewritten by mac80211 to contain the |
| 1418 | * entire IEs after the SSID, so that drivers need not look at these |
| 1419 | * at all but just send them after the SSID -- mac80211 includes the |
| 1420 | * (extended) supported rates and HT information (where applicable). |
| 1421 | * When the scan finishes, ieee80211_scan_completed() must be called; |
| 1422 | * note that it also must be called when the scan cannot finish due to |
| 1423 | * any error unless this callback returned a negative error code. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1424 | * |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1425 | * @sw_scan_start: Notifier function that is called just before a software scan |
| 1426 | * is started. Can be NULL, if the driver doesn't need this notification. |
| 1427 | * |
| 1428 | * @sw_scan_complete: Notifier function that is called just after a software scan |
| 1429 | * finished. Can be NULL, if the driver doesn't need this notification. |
| 1430 | * |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1431 | * @get_stats: Return low-level statistics. |
| 1432 | * Returns zero if statistics are available. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1433 | * |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1434 | * @get_tkip_seq: If your device implements TKIP encryption in hardware this |
| 1435 | * callback should be provided to read the TKIP transmit IVs (both IV32 |
| 1436 | * and IV16) for the given key from hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1437 | * |
| 1438 | * @set_rts_threshold: Configuration of RTS threshold (if device needs it) |
| 1439 | * |
Christian Lamparter | 89fad57 | 2008-12-09 16:28:06 +0100 | [diff] [blame] | 1440 | * @sta_notify: Notifies low level driver about addition, removal or power |
| 1441 | * state transition of an associated station, AP, IBSS/WDS/mesh peer etc. |
| 1442 | * Must be atomic. |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 1443 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1444 | * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 1445 | * bursting) for a hardware TX queue. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1446 | * Returns a negative error code on failure. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1447 | * |
| 1448 | * @get_tx_stats: Get statistics of the current TX queue status. This is used |
| 1449 | * to get number of currently queued packets (queue length), maximum queue |
| 1450 | * size (limit), and total number of packets sent using each TX queue |
Johannes Berg | e4e72fb | 2009-03-23 17:28:42 +0100 | [diff] [blame] | 1451 | * (count). The 'stats' pointer points to an array that has hw->queues |
| 1452 | * items. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1453 | * |
| 1454 | * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1455 | * this is only used for IBSS mode BSSID merging and debugging. Is not a |
Alina Friedrichsen | 7b08b3b | 2009-02-05 17:58:34 +0100 | [diff] [blame] | 1456 | * required function. |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1457 | * |
| 1458 | * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. |
| 1459 | * Currently, this is only used for IBSS mode debugging. Is not a |
Alina Friedrichsen | 7b08b3b | 2009-02-05 17:58:34 +0100 | [diff] [blame] | 1460 | * required function. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1461 | * |
| 1462 | * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize |
| 1463 | * with other STAs in the IBSS. This is only used in IBSS mode. This |
| 1464 | * function is optional if the firmware/hardware takes full care of |
| 1465 | * TSF synchronization. |
| 1466 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1467 | * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. |
| 1468 | * This is needed only for IBSS mode and the result of this function is |
| 1469 | * used to determine whether to reply to Probe Requests. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1470 | * Returns non-zero if this device sent the last beacon. |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1471 | * |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1472 | * @ampdu_action: Perform a certain A-MPDU action |
| 1473 | * The RA/TID combination determines the destination and TID we want |
| 1474 | * the ampdu action to be performed for. The action is defined through |
| 1475 | * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1476 | * is the first frame we expect to perform the action on. Notice |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1477 | * that TX/RX_STOP can pass NULL for this parameter. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1478 | * Returns a negative error code on failure. |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1479 | * |
| 1480 | * @rfkill_poll: Poll rfkill hardware state. If you need this, you also |
| 1481 | * need to set wiphy->rfkill_poll to %true before registration, |
| 1482 | * and need to call wiphy_rfkill_set_hw_state() in the callback. |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1483 | * |
| 1484 | * @testmode_cmd: Implement a cfg80211 test mode command. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1485 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1486 | struct ieee80211_ops { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1487 | int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1488 | int (*start)(struct ieee80211_hw *hw); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1489 | void (*stop)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1490 | int (*add_interface)(struct ieee80211_hw *hw, |
| 1491 | struct ieee80211_if_init_conf *conf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1492 | void (*remove_interface)(struct ieee80211_hw *hw, |
| 1493 | struct ieee80211_if_init_conf *conf); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1494 | int (*config)(struct ieee80211_hw *hw, u32 changed); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1495 | void (*bss_info_changed)(struct ieee80211_hw *hw, |
| 1496 | struct ieee80211_vif *vif, |
| 1497 | struct ieee80211_bss_conf *info, |
| 1498 | u32 changed); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1499 | u64 (*prepare_multicast)(struct ieee80211_hw *hw, |
| 1500 | int mc_count, struct dev_addr_list *mc_list); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1501 | void (*configure_filter)(struct ieee80211_hw *hw, |
| 1502 | unsigned int changed_flags, |
| 1503 | unsigned int *total_flags, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1504 | u64 multicast); |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1505 | int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
| 1506 | bool set); |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1507 | int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1508 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 1509 | struct ieee80211_key_conf *key); |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1510 | void (*update_tkip_key)(struct ieee80211_hw *hw, |
| 1511 | struct ieee80211_key_conf *conf, const u8 *address, |
| 1512 | u32 iv32, u16 *phase1key); |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1513 | int (*hw_scan)(struct ieee80211_hw *hw, |
| 1514 | struct cfg80211_scan_request *req); |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1515 | void (*sw_scan_start)(struct ieee80211_hw *hw); |
| 1516 | void (*sw_scan_complete)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1517 | int (*get_stats)(struct ieee80211_hw *hw, |
| 1518 | struct ieee80211_low_level_stats *stats); |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1519 | void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, |
| 1520 | u32 *iv32, u16 *iv16); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1521 | int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1522 | void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1523 | enum sta_notify_cmd, struct ieee80211_sta *sta); |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1524 | int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1525 | const struct ieee80211_tx_queue_params *params); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1526 | int (*get_tx_stats)(struct ieee80211_hw *hw, |
| 1527 | struct ieee80211_tx_queue_stats *stats); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1528 | u64 (*get_tsf)(struct ieee80211_hw *hw); |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1529 | void (*set_tsf)(struct ieee80211_hw *hw, u64 tsf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1530 | void (*reset_tsf)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1531 | int (*tx_last_beacon)(struct ieee80211_hw *hw); |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1532 | int (*ampdu_action)(struct ieee80211_hw *hw, |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 1533 | struct ieee80211_vif *vif, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1534 | enum ieee80211_ampdu_mlme_action action, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1535 | struct ieee80211_sta *sta, u16 tid, u16 *ssn); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1536 | |
| 1537 | void (*rfkill_poll)(struct ieee80211_hw *hw); |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1538 | #ifdef CONFIG_NL80211_TESTMODE |
| 1539 | int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); |
| 1540 | #endif |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1541 | }; |
| 1542 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1543 | /** |
| 1544 | * ieee80211_alloc_hw - Allocate a new hardware device |
| 1545 | * |
| 1546 | * This must be called once for each hardware device. The returned pointer |
| 1547 | * must be used to refer to this device when calling other functions. |
| 1548 | * mac80211 allocates a private data area for the driver pointed to by |
| 1549 | * @priv in &struct ieee80211_hw, the size of this area is given as |
| 1550 | * @priv_data_len. |
| 1551 | * |
| 1552 | * @priv_data_len: length of private data |
| 1553 | * @ops: callbacks for this device |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1554 | */ |
| 1555 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 1556 | const struct ieee80211_ops *ops); |
| 1557 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1558 | /** |
| 1559 | * ieee80211_register_hw - Register hardware device |
| 1560 | * |
Johannes Berg | dbbea67 | 2008-02-26 14:34:06 +0100 | [diff] [blame] | 1561 | * You must call this function before any other functions in |
| 1562 | * mac80211. Note that before a hardware can be registered, you |
| 1563 | * need to fill the contained wiphy's information. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1564 | * |
| 1565 | * @hw: the device to register as returned by ieee80211_alloc_hw() |
| 1566 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1567 | int ieee80211_register_hw(struct ieee80211_hw *hw); |
| 1568 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1569 | #ifdef CONFIG_MAC80211_LEDS |
| 1570 | extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); |
| 1571 | extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1572 | extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1573 | extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1574 | #endif |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1575 | /** |
| 1576 | * ieee80211_get_tx_led_name - get name of TX LED |
| 1577 | * |
| 1578 | * mac80211 creates a transmit LED trigger for each wireless hardware |
| 1579 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1580 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1581 | * of the trigger so you can automatically link the LED device. |
| 1582 | * |
| 1583 | * @hw: the hardware to get the LED trigger name for |
| 1584 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1585 | static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
| 1586 | { |
| 1587 | #ifdef CONFIG_MAC80211_LEDS |
| 1588 | return __ieee80211_get_tx_led_name(hw); |
| 1589 | #else |
| 1590 | return NULL; |
| 1591 | #endif |
| 1592 | } |
| 1593 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1594 | /** |
| 1595 | * ieee80211_get_rx_led_name - get name of RX LED |
| 1596 | * |
| 1597 | * mac80211 creates a receive LED trigger for each wireless hardware |
| 1598 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1599 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1600 | * of the trigger so you can automatically link the LED device. |
| 1601 | * |
| 1602 | * @hw: the hardware to get the LED trigger name for |
| 1603 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1604 | static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
| 1605 | { |
| 1606 | #ifdef CONFIG_MAC80211_LEDS |
| 1607 | return __ieee80211_get_rx_led_name(hw); |
| 1608 | #else |
| 1609 | return NULL; |
| 1610 | #endif |
| 1611 | } |
| 1612 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1613 | /** |
| 1614 | * ieee80211_get_assoc_led_name - get name of association LED |
| 1615 | * |
| 1616 | * mac80211 creates a association LED trigger for each wireless hardware |
| 1617 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1618 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1619 | * of the trigger so you can automatically link the LED device. |
| 1620 | * |
| 1621 | * @hw: the hardware to get the LED trigger name for |
| 1622 | */ |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1623 | static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
| 1624 | { |
| 1625 | #ifdef CONFIG_MAC80211_LEDS |
| 1626 | return __ieee80211_get_assoc_led_name(hw); |
| 1627 | #else |
| 1628 | return NULL; |
| 1629 | #endif |
| 1630 | } |
| 1631 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1632 | /** |
| 1633 | * ieee80211_get_radio_led_name - get name of radio LED |
| 1634 | * |
| 1635 | * mac80211 creates a radio change LED trigger for each wireless hardware |
| 1636 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1637 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1638 | * of the trigger so you can automatically link the LED device. |
| 1639 | * |
| 1640 | * @hw: the hardware to get the LED trigger name for |
| 1641 | */ |
| 1642 | static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) |
| 1643 | { |
| 1644 | #ifdef CONFIG_MAC80211_LEDS |
| 1645 | return __ieee80211_get_radio_led_name(hw); |
| 1646 | #else |
| 1647 | return NULL; |
| 1648 | #endif |
| 1649 | } |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1650 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1651 | /** |
| 1652 | * ieee80211_unregister_hw - Unregister a hardware device |
| 1653 | * |
| 1654 | * This function instructs mac80211 to free allocated resources |
| 1655 | * and unregister netdevices from the networking subsystem. |
| 1656 | * |
| 1657 | * @hw: the hardware to unregister |
| 1658 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1659 | void ieee80211_unregister_hw(struct ieee80211_hw *hw); |
| 1660 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1661 | /** |
| 1662 | * ieee80211_free_hw - free hardware descriptor |
| 1663 | * |
| 1664 | * This function frees everything that was allocated, including the |
| 1665 | * private data for the driver. You must call ieee80211_unregister_hw() |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1666 | * before calling this function. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1667 | * |
| 1668 | * @hw: the hardware to free |
| 1669 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1670 | void ieee80211_free_hw(struct ieee80211_hw *hw); |
| 1671 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1672 | /** |
| 1673 | * ieee80211_restart_hw - restart hardware completely |
| 1674 | * |
| 1675 | * Call this function when the hardware was restarted for some reason |
| 1676 | * (hardware error, ...) and the driver is unable to restore its state |
| 1677 | * by itself. mac80211 assumes that at this point the driver/hardware |
| 1678 | * is completely uninitialised and stopped, it starts the process by |
| 1679 | * calling the ->start() operation. The driver will need to reset all |
| 1680 | * internal state that it has prior to calling this function. |
| 1681 | * |
| 1682 | * @hw: the hardware to restart |
| 1683 | */ |
| 1684 | void ieee80211_restart_hw(struct ieee80211_hw *hw); |
| 1685 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1686 | /** |
| 1687 | * ieee80211_rx - receive frame |
| 1688 | * |
| 1689 | * Use this function to hand received frames to mac80211. The receive |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 1690 | * buffer in @skb must start with an IEEE 802.11 header. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1691 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1692 | * This function may not be called in IRQ context. Calls to this function |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1693 | * for a single hardware must be synchronized against each other. Calls to |
| 1694 | * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be |
| 1695 | * mixed for a single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1696 | * |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1697 | * In process context use instead ieee80211_rx_ni(). |
Johannes Berg | d20ef63 | 2009-10-11 15:10:40 +0200 | [diff] [blame] | 1698 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1699 | * @hw: the hardware this frame came in on |
| 1700 | * @skb: the buffer to receive, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1701 | */ |
John W. Linville | 103bf9f | 2009-08-20 16:34:15 -0400 | [diff] [blame] | 1702 | void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1703 | |
| 1704 | /** |
| 1705 | * ieee80211_rx_irqsafe - receive frame |
| 1706 | * |
| 1707 | * Like ieee80211_rx() but can be called in IRQ context |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1708 | * (internally defers to a tasklet.) |
| 1709 | * |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1710 | * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not |
| 1711 | * be mixed for a single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1712 | * |
| 1713 | * @hw: the hardware this frame came in on |
| 1714 | * @skb: the buffer to receive, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1715 | */ |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 1716 | void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1717 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1718 | /** |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1719 | * ieee80211_rx_ni - receive frame (in process context) |
| 1720 | * |
| 1721 | * Like ieee80211_rx() but can be called in process context |
| 1722 | * (internally disables bottom halves). |
| 1723 | * |
| 1724 | * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may |
| 1725 | * not be mixed for a single hardware. |
| 1726 | * |
| 1727 | * @hw: the hardware this frame came in on |
| 1728 | * @skb: the buffer to receive, owned by mac80211 after this call |
| 1729 | */ |
| 1730 | static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, |
| 1731 | struct sk_buff *skb) |
| 1732 | { |
| 1733 | local_bh_disable(); |
| 1734 | ieee80211_rx(hw, skb); |
| 1735 | local_bh_enable(); |
| 1736 | } |
| 1737 | |
Gertjan van Wingerde | d24deb2 | 2009-12-04 23:46:54 +0100 | [diff] [blame] | 1738 | /* |
| 1739 | * The TX headroom reserved by mac80211 for its own tx_status functions. |
| 1740 | * This is enough for the radiotap header. |
| 1741 | */ |
| 1742 | #define IEEE80211_TX_STATUS_HEADROOM 13 |
| 1743 | |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1744 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1745 | * ieee80211_tx_status - transmit status callback |
| 1746 | * |
| 1747 | * Call this function for all transmitted frames after they have been |
| 1748 | * transmitted. It is permissible to not call this function for |
| 1749 | * multicast frames but this can affect statistics. |
| 1750 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1751 | * This function may not be called in IRQ context. Calls to this function |
| 1752 | * for a single hardware must be synchronized against each other. Calls |
| 1753 | * to this function and ieee80211_tx_status_irqsafe() may not be mixed |
| 1754 | * for a single hardware. |
| 1755 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1756 | * @hw: the hardware the frame was transmitted by |
| 1757 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1758 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1759 | void ieee80211_tx_status(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1760 | struct sk_buff *skb); |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1761 | |
| 1762 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1763 | * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1764 | * |
| 1765 | * Like ieee80211_tx_status() but can be called in IRQ context |
| 1766 | * (internally defers to a tasklet.) |
| 1767 | * |
| 1768 | * Calls to this function and ieee80211_tx_status() may not be mixed for a |
| 1769 | * single hardware. |
| 1770 | * |
| 1771 | * @hw: the hardware the frame was transmitted by |
| 1772 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1773 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1774 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1775 | struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1776 | |
| 1777 | /** |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 1778 | * ieee80211_beacon_get_tim - beacon generation function |
| 1779 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 1780 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
| 1781 | * @tim_offset: pointer to variable that will receive the TIM IE offset. |
| 1782 | * Set to 0 if invalid (in non-AP modes). |
| 1783 | * @tim_length: pointer to variable that will receive the TIM IE length, |
| 1784 | * (including the ID and length bytes!). |
| 1785 | * Set to 0 if invalid (in non-AP modes). |
| 1786 | * |
| 1787 | * If the driver implements beaconing modes, it must use this function to |
| 1788 | * obtain the beacon frame/template. |
| 1789 | * |
| 1790 | * If the beacon frames are generated by the host system (i.e., not in |
| 1791 | * hardware/firmware), the driver uses this function to get each beacon |
| 1792 | * frame from mac80211 -- it is responsible for calling this function |
| 1793 | * before the beacon is needed (e.g. based on hardware interrupt). |
| 1794 | * |
| 1795 | * If the beacon frames are generated by the device, then the driver |
| 1796 | * must use the returned beacon as the template and change the TIM IE |
| 1797 | * according to the current DTIM parameters/TIM bitmap. |
| 1798 | * |
| 1799 | * The driver is responsible for freeing the returned skb. |
| 1800 | */ |
| 1801 | struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, |
| 1802 | struct ieee80211_vif *vif, |
| 1803 | u16 *tim_offset, u16 *tim_length); |
| 1804 | |
| 1805 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1806 | * ieee80211_beacon_get - beacon generation function |
| 1807 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1808 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1809 | * |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 1810 | * See ieee80211_beacon_get_tim(). |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1811 | */ |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 1812 | static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, |
| 1813 | struct ieee80211_vif *vif) |
| 1814 | { |
| 1815 | return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); |
| 1816 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1817 | |
| 1818 | /** |
| 1819 | * ieee80211_rts_get - RTS frame generation function |
| 1820 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1821 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1822 | * @frame: pointer to the frame that is going to be protected by the RTS. |
| 1823 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1824 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1825 | * @rts: The buffer where to store the RTS frame. |
| 1826 | * |
| 1827 | * If the RTS frames are generated by the host system (i.e., not in |
| 1828 | * hardware/firmware), the low-level driver uses this function to receive |
| 1829 | * the next RTS frame from the 802.11 code. The low-level is responsible |
| 1830 | * for calling this function before and RTS frame is needed. |
| 1831 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1832 | void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1833 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1834 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1835 | struct ieee80211_rts *rts); |
| 1836 | |
| 1837 | /** |
| 1838 | * ieee80211_rts_duration - Get the duration field for an RTS frame |
| 1839 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1840 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1841 | * @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] | 1842 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1843 | * |
| 1844 | * If the RTS is generated in firmware, but the host system must provide |
| 1845 | * the duration field, the low-level driver uses this function to receive |
| 1846 | * the duration field value in little-endian byteorder. |
| 1847 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1848 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 1849 | struct ieee80211_vif *vif, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1850 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1851 | |
| 1852 | /** |
| 1853 | * ieee80211_ctstoself_get - CTS-to-self frame generation function |
| 1854 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1855 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1856 | * @frame: pointer to the frame that is going to be protected by the CTS-to-self. |
| 1857 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1858 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1859 | * @cts: The buffer where to store the CTS-to-self frame. |
| 1860 | * |
| 1861 | * If the CTS-to-self frames are generated by the host system (i.e., not in |
| 1862 | * hardware/firmware), the low-level driver uses this function to receive |
| 1863 | * the next CTS-to-self frame from the 802.11 code. The low-level is responsible |
| 1864 | * for calling this function before and CTS-to-self frame is needed. |
| 1865 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1866 | void ieee80211_ctstoself_get(struct ieee80211_hw *hw, |
| 1867 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1868 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1869 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1870 | struct ieee80211_cts *cts); |
| 1871 | |
| 1872 | /** |
| 1873 | * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame |
| 1874 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1875 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1876 | * @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] | 1877 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1878 | * |
| 1879 | * If the CTS-to-self is generated in firmware, but the host system must provide |
| 1880 | * the duration field, the low-level driver uses this function to receive |
| 1881 | * the duration field value in little-endian byteorder. |
| 1882 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1883 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 1884 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1885 | size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1886 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1887 | |
| 1888 | /** |
| 1889 | * ieee80211_generic_frame_duration - Calculate the duration field for a frame |
| 1890 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1891 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1892 | * @frame_len: the length of the frame. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1893 | * @rate: the rate at which the frame is going to be transmitted. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1894 | * |
| 1895 | * Calculate the duration field of some generic frame, given its |
| 1896 | * length and transmission rate (in 100kbps). |
| 1897 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1898 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 1899 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1900 | size_t frame_len, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1901 | struct ieee80211_rate *rate); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1902 | |
| 1903 | /** |
| 1904 | * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames |
| 1905 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1906 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1907 | * |
| 1908 | * Function for accessing buffered broadcast and multicast frames. If |
| 1909 | * hardware/firmware does not implement buffering of broadcast/multicast |
| 1910 | * frames when power saving is used, 802.11 code buffers them in the host |
| 1911 | * memory. The low-level driver uses this function to fetch next buffered |
| 1912 | * frame. In most cases, this is used when generating beacon frame. This |
| 1913 | * function returns a pointer to the next buffered skb or NULL if no more |
| 1914 | * buffered frames are available. |
| 1915 | * |
| 1916 | * Note: buffered frames are returned only after DTIM beacon frame was |
| 1917 | * generated with ieee80211_beacon_get() and the low-level driver must thus |
| 1918 | * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns |
| 1919 | * NULL if the previous generated beacon was not DTIM, so the low-level driver |
| 1920 | * does not need to check for DTIM beacons separately and should be able to |
| 1921 | * use common code for all beacons. |
| 1922 | */ |
| 1923 | struct sk_buff * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1924 | ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1925 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1926 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 1927 | * ieee80211_get_tkip_key - get a TKIP rc4 for skb |
| 1928 | * |
| 1929 | * This function computes a TKIP rc4 key for an skb. It computes |
| 1930 | * a phase 1 key if needed (iv16 wraps around). This function is to |
| 1931 | * be used by drivers which can do HW encryption but need to compute |
| 1932 | * to phase 1/2 key in SW. |
| 1933 | * |
| 1934 | * @keyconf: the parameter passed with the set key |
| 1935 | * @skb: the skb for which the key is needed |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1936 | * @type: TBD |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 1937 | * @key: a buffer to which the key will be written |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 1938 | */ |
| 1939 | void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, |
| 1940 | struct sk_buff *skb, |
| 1941 | enum ieee80211_tkip_key_type type, u8 *key); |
| 1942 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1943 | * ieee80211_wake_queue - wake specific queue |
| 1944 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1945 | * @queue: queue number (counted from zero). |
| 1946 | * |
| 1947 | * Drivers should use this function instead of netif_wake_queue. |
| 1948 | */ |
| 1949 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); |
| 1950 | |
| 1951 | /** |
| 1952 | * ieee80211_stop_queue - stop specific queue |
| 1953 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1954 | * @queue: queue number (counted from zero). |
| 1955 | * |
| 1956 | * Drivers should use this function instead of netif_stop_queue. |
| 1957 | */ |
| 1958 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); |
| 1959 | |
| 1960 | /** |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 1961 | * ieee80211_queue_stopped - test status of the queue |
| 1962 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1963 | * @queue: queue number (counted from zero). |
| 1964 | * |
| 1965 | * Drivers should use this function instead of netif_stop_queue. |
| 1966 | */ |
| 1967 | |
| 1968 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); |
| 1969 | |
| 1970 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1971 | * ieee80211_stop_queues - stop all queues |
| 1972 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1973 | * |
| 1974 | * Drivers should use this function instead of netif_stop_queue. |
| 1975 | */ |
| 1976 | void ieee80211_stop_queues(struct ieee80211_hw *hw); |
| 1977 | |
| 1978 | /** |
| 1979 | * ieee80211_wake_queues - wake all queues |
| 1980 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1981 | * |
| 1982 | * Drivers should use this function instead of netif_wake_queue. |
| 1983 | */ |
| 1984 | void ieee80211_wake_queues(struct ieee80211_hw *hw); |
| 1985 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1986 | /** |
| 1987 | * ieee80211_scan_completed - completed hardware scan |
| 1988 | * |
| 1989 | * When hardware scan offload is used (i.e. the hw_scan() callback is |
| 1990 | * assigned) this function needs to be called by the driver to notify |
| 1991 | * mac80211 that the scan finished. |
| 1992 | * |
| 1993 | * @hw: the hardware that finished the scan |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1994 | * @aborted: set to true if scan was aborted |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1995 | */ |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1996 | void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1997 | |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1998 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1999 | * ieee80211_iterate_active_interfaces - iterate active interfaces |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2000 | * |
| 2001 | * This function iterates over the interfaces associated with a given |
| 2002 | * hardware that are currently active and calls the callback for them. |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 2003 | * This function allows the iterator function to sleep, when the iterator |
| 2004 | * function is atomic @ieee80211_iterate_active_interfaces_atomic can |
| 2005 | * be used. |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2006 | * |
| 2007 | * @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] | 2008 | * @iterator: the iterator function to call |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2009 | * @data: first argument of the iterator function |
| 2010 | */ |
| 2011 | void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, |
| 2012 | void (*iterator)(void *data, u8 *mac, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2013 | struct ieee80211_vif *vif), |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2014 | void *data); |
| 2015 | |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2016 | /** |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 2017 | * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces |
| 2018 | * |
| 2019 | * This function iterates over the interfaces associated with a given |
| 2020 | * hardware that are currently active and calls the callback for them. |
| 2021 | * This function requires the iterator callback function to be atomic, |
| 2022 | * if that is not desired, use @ieee80211_iterate_active_interfaces instead. |
| 2023 | * |
| 2024 | * @hw: the hardware struct of which the interfaces should be iterated over |
| 2025 | * @iterator: the iterator function to call, cannot sleep |
| 2026 | * @data: first argument of the iterator function |
| 2027 | */ |
| 2028 | void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, |
| 2029 | void (*iterator)(void *data, |
| 2030 | u8 *mac, |
| 2031 | struct ieee80211_vif *vif), |
| 2032 | void *data); |
| 2033 | |
| 2034 | /** |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 2035 | * ieee80211_queue_work - add work onto the mac80211 workqueue |
| 2036 | * |
| 2037 | * Drivers and mac80211 use this to add work onto the mac80211 workqueue. |
| 2038 | * This helper ensures drivers are not queueing work when they should not be. |
| 2039 | * |
| 2040 | * @hw: the hardware struct for the interface we are adding work for |
| 2041 | * @work: the work we want to add onto the mac80211 workqueue |
| 2042 | */ |
| 2043 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); |
| 2044 | |
| 2045 | /** |
| 2046 | * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue |
| 2047 | * |
| 2048 | * Drivers and mac80211 use this to queue delayed work onto the mac80211 |
| 2049 | * workqueue. |
| 2050 | * |
| 2051 | * @hw: the hardware struct for the interface we are adding work for |
| 2052 | * @dwork: delayable work to queue onto the mac80211 workqueue |
| 2053 | * @delay: number of jiffies to wait before queueing |
| 2054 | */ |
| 2055 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, |
| 2056 | struct delayed_work *dwork, |
| 2057 | unsigned long delay); |
| 2058 | |
| 2059 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2060 | * ieee80211_start_tx_ba_session - Start a tx Block Ack session. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2061 | * @sta: the station for which to start a BA session |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2062 | * @tid: the TID to BA on. |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2063 | * |
| 2064 | * Return: success if addBA request was sent, failure otherwise |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2065 | * |
| 2066 | * Although mac80211/low level driver/user space application can estimate |
| 2067 | * the need to start aggregation on a certain RA/TID, the session level |
| 2068 | * will be managed by the mac80211. |
| 2069 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2070 | int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid); |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2071 | |
| 2072 | /** |
| 2073 | * ieee80211_start_tx_ba_cb - low level driver ready to aggregate. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2074 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2075 | * @ra: receiver address of the BA session recipient. |
| 2076 | * @tid: the TID to BA on. |
| 2077 | * |
| 2078 | * This function must be called by low level driver once it has |
| 2079 | * finished with preparations for the BA session. |
| 2080 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2081 | void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2082 | |
| 2083 | /** |
| 2084 | * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2085 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2086 | * @ra: receiver address of the BA session recipient. |
| 2087 | * @tid: the TID to BA on. |
| 2088 | * |
| 2089 | * This function must be called by low level driver once it has |
| 2090 | * finished with preparations for the BA session. |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2091 | * This version of the function is IRQ-safe. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2092 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2093 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2094 | u16 tid); |
| 2095 | |
| 2096 | /** |
| 2097 | * ieee80211_stop_tx_ba_session - Stop a Block Ack session. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2098 | * @sta: the station whose BA session to stop |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2099 | * @tid: the TID to stop BA. |
| 2100 | * @initiator: if indicates initiator DELBA frame will be sent. |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2101 | * |
| 2102 | * Return: error if no sta with matching da found, success otherwise |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2103 | * |
| 2104 | * Although mac80211/low level driver/user space application can estimate |
| 2105 | * the need to stop aggregation on a certain RA/TID, the session level |
| 2106 | * will be managed by the mac80211. |
| 2107 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2108 | int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2109 | enum ieee80211_back_parties initiator); |
| 2110 | |
| 2111 | /** |
| 2112 | * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2113 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2114 | * @ra: receiver address of the BA session recipient. |
| 2115 | * @tid: the desired TID to BA on. |
| 2116 | * |
| 2117 | * This function must be called by low level driver once it has |
| 2118 | * finished with preparations for the BA session tear down. |
| 2119 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2120 | void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2121 | |
| 2122 | /** |
| 2123 | * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2124 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2125 | * @ra: receiver address of the BA session recipient. |
| 2126 | * @tid: the desired TID to BA on. |
| 2127 | * |
| 2128 | * This function must be called by low level driver once it has |
| 2129 | * finished with preparations for the BA session tear down. |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2130 | * This version of the function is IRQ-safe. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2131 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2132 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2133 | u16 tid); |
| 2134 | |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 2135 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2136 | * ieee80211_find_sta - find a station |
| 2137 | * |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2138 | * @vif: virtual interface to look for station on |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2139 | * @addr: station's address |
| 2140 | * |
| 2141 | * This function must be called under RCU lock and the |
| 2142 | * resulting pointer is only valid under RCU lock as well. |
| 2143 | */ |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2144 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2145 | const u8 *addr); |
| 2146 | |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2147 | /** |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2148 | * ieee80211_find_sta_by_hw - find a station on hardware |
| 2149 | * |
| 2150 | * @hw: pointer as obtained from ieee80211_alloc_hw() |
| 2151 | * @addr: station's address |
| 2152 | * |
| 2153 | * This function must be called under RCU lock and the |
| 2154 | * resulting pointer is only valid under RCU lock as well. |
| 2155 | * |
| 2156 | * NOTE: This function should not be used! When mac80211 is converted |
| 2157 | * internally to properly keep track of stations on multiple |
| 2158 | * virtual interfaces, it will not always know which station to |
| 2159 | * return here since a single address might be used by multiple |
| 2160 | * logical stations (e.g. consider a station connecting to another |
| 2161 | * BSSID on the same AP hardware without disconnecting first). |
| 2162 | * |
| 2163 | * DO NOT USE THIS FUNCTION. |
| 2164 | */ |
| 2165 | struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw, |
| 2166 | const u8 *addr); |
| 2167 | |
| 2168 | /** |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 2169 | * ieee80211_sta_block_awake - block station from waking up |
| 2170 | * @hw: the hardware |
| 2171 | * @pubsta: the station |
| 2172 | * @block: whether to block or unblock |
| 2173 | * |
| 2174 | * Some devices require that all frames that are on the queues |
| 2175 | * for a specific station that went to sleep are flushed before |
| 2176 | * a poll response or frames after the station woke up can be |
| 2177 | * delivered to that it. Note that such frames must be rejected |
| 2178 | * by the driver as filtered, with the appropriate status flag. |
| 2179 | * |
| 2180 | * This function allows implementing this mode in a race-free |
| 2181 | * manner. |
| 2182 | * |
| 2183 | * To do this, a driver must keep track of the number of frames |
| 2184 | * still enqueued for a specific station. If this number is not |
| 2185 | * zero when the station goes to sleep, the driver must call |
| 2186 | * this function to force mac80211 to consider the station to |
| 2187 | * be asleep regardless of the station's actual state. Once the |
| 2188 | * number of outstanding frames reaches zero, the driver must |
| 2189 | * call this function again to unblock the station. That will |
| 2190 | * cause mac80211 to be able to send ps-poll responses, and if |
| 2191 | * the station queried in the meantime then frames will also |
| 2192 | * be sent out as a result of this. Additionally, the driver |
| 2193 | * will be notified that the station woke up some time after |
| 2194 | * it is unblocked, regardless of whether the station actually |
| 2195 | * woke up while blocked or not. |
| 2196 | */ |
| 2197 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
| 2198 | struct ieee80211_sta *pubsta, bool block); |
| 2199 | |
| 2200 | /** |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2201 | * ieee80211_beacon_loss - inform hardware does not receive beacons |
| 2202 | * |
| 2203 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
| 2204 | * |
| 2205 | * When beacon filtering is enabled with IEEE80211_HW_BEACON_FILTERING and |
| 2206 | * IEEE80211_CONF_PS is set, the driver needs to inform whenever the |
| 2207 | * hardware is not receiving beacons with this function. |
| 2208 | */ |
| 2209 | void ieee80211_beacon_loss(struct ieee80211_vif *vif); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2210 | |
| 2211 | /* Rate control API */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2212 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2213 | /** |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 2214 | * enum rate_control_changed - flags to indicate which parameter changed |
| 2215 | * |
| 2216 | * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have |
| 2217 | * changed, rate control algorithm can update its internal state if needed. |
| 2218 | */ |
| 2219 | enum rate_control_changed { |
| 2220 | IEEE80211_RC_HT_CHANGED = BIT(0) |
| 2221 | }; |
| 2222 | |
| 2223 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2224 | * struct ieee80211_tx_rate_control - rate control information for/from RC algo |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2225 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2226 | * @hw: The hardware the algorithm is invoked for. |
| 2227 | * @sband: The band this frame is being transmitted on. |
| 2228 | * @bss_conf: the current BSS configuration |
| 2229 | * @reported_rate: The rate control algorithm can fill this in to indicate |
| 2230 | * which rate should be reported to userspace as the current rate and |
| 2231 | * used for rate calculations in the mesh network. |
| 2232 | * @rts: whether RTS will be used for this frame because it is longer than the |
| 2233 | * RTS threshold |
| 2234 | * @short_preamble: whether mac80211 will request short-preamble transmission |
| 2235 | * if the selected rate supports it |
| 2236 | * @max_rate_idx: user-requested maximum rate (not MCS for now) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 2237 | * @skb: the skb that will be transmitted, the control information in it needs |
| 2238 | * to be filled in |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2239 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2240 | struct ieee80211_tx_rate_control { |
| 2241 | struct ieee80211_hw *hw; |
| 2242 | struct ieee80211_supported_band *sband; |
| 2243 | struct ieee80211_bss_conf *bss_conf; |
| 2244 | struct sk_buff *skb; |
| 2245 | struct ieee80211_tx_rate reported_rate; |
| 2246 | bool rts, short_preamble; |
| 2247 | u8 max_rate_idx; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2248 | }; |
| 2249 | |
| 2250 | struct rate_control_ops { |
| 2251 | struct module *module; |
| 2252 | const char *name; |
| 2253 | void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2254 | void (*free)(void *priv); |
| 2255 | |
| 2256 | void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); |
| 2257 | void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, |
| 2258 | struct ieee80211_sta *sta, void *priv_sta); |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 2259 | void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, |
| 2260 | struct ieee80211_sta *sta, |
| 2261 | void *priv_sta, u32 changed); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2262 | void (*free_sta)(void *priv, struct ieee80211_sta *sta, |
| 2263 | void *priv_sta); |
| 2264 | |
| 2265 | void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, |
| 2266 | struct ieee80211_sta *sta, void *priv_sta, |
| 2267 | struct sk_buff *skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2268 | void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, |
| 2269 | struct ieee80211_tx_rate_control *txrc); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2270 | |
| 2271 | void (*add_sta_debugfs)(void *priv, void *priv_sta, |
| 2272 | struct dentry *dir); |
| 2273 | void (*remove_sta_debugfs)(void *priv, void *priv_sta); |
| 2274 | }; |
| 2275 | |
| 2276 | static inline int rate_supported(struct ieee80211_sta *sta, |
| 2277 | enum ieee80211_band band, |
| 2278 | int index) |
| 2279 | { |
| 2280 | return (sta == NULL || sta->supp_rates[band] & BIT(index)); |
| 2281 | } |
| 2282 | |
Luis R. Rodriguez | 4c6d4f5 | 2009-07-16 10:05:41 -0700 | [diff] [blame] | 2283 | /** |
| 2284 | * rate_control_send_low - helper for drivers for management/no-ack frames |
| 2285 | * |
| 2286 | * Rate control algorithms that agree to use the lowest rate to |
| 2287 | * send management frames and NO_ACK data with the respective hw |
| 2288 | * retries should use this in the beginning of their mac80211 get_rate |
| 2289 | * callback. If true is returned the rate control can simply return. |
| 2290 | * If false is returned we guarantee that sta and sta and priv_sta is |
| 2291 | * not null. |
| 2292 | * |
| 2293 | * Rate control algorithms wishing to do more intelligent selection of |
| 2294 | * rate for multicast/broadcast frames may choose to not use this. |
| 2295 | * |
| 2296 | * @sta: &struct ieee80211_sta pointer to the target destination. Note |
| 2297 | * that this may be null. |
| 2298 | * @priv_sta: private rate control structure. This may be null. |
| 2299 | * @txrc: rate control information we sholud populate for mac80211. |
| 2300 | */ |
| 2301 | bool rate_control_send_low(struct ieee80211_sta *sta, |
| 2302 | void *priv_sta, |
| 2303 | struct ieee80211_tx_rate_control *txrc); |
| 2304 | |
| 2305 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2306 | static inline s8 |
| 2307 | rate_lowest_index(struct ieee80211_supported_band *sband, |
| 2308 | struct ieee80211_sta *sta) |
| 2309 | { |
| 2310 | int i; |
| 2311 | |
| 2312 | for (i = 0; i < sband->n_bitrates; i++) |
| 2313 | if (rate_supported(sta, sband->band, i)) |
| 2314 | return i; |
| 2315 | |
| 2316 | /* warn when we cannot find a rate. */ |
| 2317 | WARN_ON(1); |
| 2318 | |
| 2319 | return 0; |
| 2320 | } |
| 2321 | |
Luis R. Rodriguez | b770b43 | 2009-07-16 10:15:09 -0700 | [diff] [blame] | 2322 | static inline |
| 2323 | bool rate_usable_index_exists(struct ieee80211_supported_band *sband, |
| 2324 | struct ieee80211_sta *sta) |
| 2325 | { |
| 2326 | unsigned int i; |
| 2327 | |
| 2328 | for (i = 0; i < sband->n_bitrates; i++) |
| 2329 | if (rate_supported(sta, sband->band, i)) |
| 2330 | return true; |
| 2331 | return false; |
| 2332 | } |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2333 | |
| 2334 | int ieee80211_rate_control_register(struct rate_control_ops *ops); |
| 2335 | void ieee80211_rate_control_unregister(struct rate_control_ops *ops); |
| 2336 | |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2337 | static inline bool |
| 2338 | conf_is_ht20(struct ieee80211_conf *conf) |
| 2339 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2340 | return conf->channel_type == NL80211_CHAN_HT20; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2341 | } |
| 2342 | |
| 2343 | static inline bool |
| 2344 | conf_is_ht40_minus(struct ieee80211_conf *conf) |
| 2345 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2346 | return conf->channel_type == NL80211_CHAN_HT40MINUS; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2347 | } |
| 2348 | |
| 2349 | static inline bool |
| 2350 | conf_is_ht40_plus(struct ieee80211_conf *conf) |
| 2351 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2352 | return conf->channel_type == NL80211_CHAN_HT40PLUS; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2353 | } |
| 2354 | |
| 2355 | static inline bool |
| 2356 | conf_is_ht40(struct ieee80211_conf *conf) |
| 2357 | { |
| 2358 | return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); |
| 2359 | } |
| 2360 | |
| 2361 | static inline bool |
| 2362 | conf_is_ht(struct ieee80211_conf *conf) |
| 2363 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2364 | return conf->channel_type != NL80211_CHAN_NO_HT; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2365 | } |
| 2366 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2367 | #endif /* MAC80211_H */ |