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> |
| 22 | #include <net/wireless.h> |
| 23 | #include <net/cfg80211.h> |
| 24 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 25 | /** |
| 26 | * DOC: Introduction |
| 27 | * |
| 28 | * mac80211 is the Linux stack for 802.11 hardware that implements |
| 29 | * only partial functionality in hard- or firmware. This document |
| 30 | * defines the interface between mac80211 and low-level hardware |
| 31 | * drivers. |
| 32 | */ |
| 33 | |
| 34 | /** |
| 35 | * DOC: Calling mac80211 from interrupts |
| 36 | * |
| 37 | * Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 38 | * called in hardware interrupt context. The low-level driver must not call any |
| 39 | * other functions in hardware interrupt context. If there is a need for such |
| 40 | * call, the low-level driver should first ACK the interrupt and perform the |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 41 | * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even |
| 42 | * tasklet function. |
| 43 | * |
| 44 | * NOTE: If the driver opts to use the _irqsafe() functions, it may not also |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 45 | * use the non-IRQ-safe functions! |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 46 | */ |
| 47 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 48 | /** |
| 49 | * DOC: Warning |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 50 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 51 | * If you're reading this document and not the header file itself, it will |
| 52 | * be incomplete because not all documentation has been converted yet. |
| 53 | */ |
| 54 | |
| 55 | /** |
| 56 | * DOC: Frame format |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 57 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 58 | * As a general rule, when frames are passed between mac80211 and the driver, |
| 59 | * they start with the IEEE 802.11 header and include the same octets that are |
| 60 | * sent over the air except for the FCS which should be calculated by the |
| 61 | * hardware. |
| 62 | * |
| 63 | * There are, however, various exceptions to this rule for advanced features: |
| 64 | * |
| 65 | * The first exception is for hardware encryption and decryption offload |
| 66 | * where the IV/ICV may or may not be generated in hardware. |
| 67 | * |
| 68 | * Secondly, when the hardware handles fragmentation, the frame handed to |
| 69 | * the driver from mac80211 is the MSDU, not the MPDU. |
| 70 | * |
| 71 | * Finally, for received frames, the driver is able to indicate that it has |
| 72 | * filled a radiotap header and put that in front of the frame; if it does |
| 73 | * not do so then mac80211 may add this under certain circumstances. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 74 | */ |
| 75 | |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 76 | /** |
| 77 | * struct ieee80211_ht_bss_info - describing BSS's HT characteristics |
| 78 | * |
| 79 | * This structure describes most essential parameters needed |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 80 | * to describe 802.11n HT characteristics in a BSS. |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 81 | * |
| 82 | * @primary_channel: channel number of primery channel |
| 83 | * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width) |
| 84 | * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection) |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 85 | */ |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 86 | struct ieee80211_ht_bss_info { |
| 87 | u8 primary_channel; |
| 88 | u8 bss_cap; /* use IEEE80211_HT_IE_CHA_ */ |
| 89 | u8 bss_op_mode; /* use IEEE80211_HT_IE_ */ |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 90 | }; |
| 91 | |
| 92 | /** |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 93 | * enum ieee80211_max_queues - maximum number of queues |
| 94 | * |
| 95 | * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. |
| 96 | * @IEEE80211_MAX_AMPDU_QUEUES: Maximum number of queues usable |
| 97 | * for A-MPDU operation. |
| 98 | */ |
| 99 | enum ieee80211_max_queues { |
| 100 | IEEE80211_MAX_QUEUES = 16, |
| 101 | IEEE80211_MAX_AMPDU_QUEUES = 16, |
| 102 | }; |
| 103 | |
| 104 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 105 | * struct ieee80211_tx_queue_params - transmit queue configuration |
| 106 | * |
| 107 | * The information provided in this structure is required for QoS |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 108 | * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 109 | * |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 110 | * @aifs: arbitration interframe space [0..255] |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 111 | * @cw_min: minimum contention window [a value of the form |
| 112 | * 2^n-1 in the range 1..32767] |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 113 | * @cw_max: maximum contention window [like @cw_min] |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 114 | * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 115 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 116 | struct ieee80211_tx_queue_params { |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 117 | u16 txop; |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 118 | u16 cw_min; |
| 119 | u16 cw_max; |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 120 | u8 aifs; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 121 | }; |
| 122 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 123 | /** |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 124 | * struct ieee80211_tx_queue_stats - transmit queue statistics |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 125 | * |
| 126 | * @len: number of packets in queue |
| 127 | * @limit: queue length limit |
| 128 | * @count: number of frames sent |
| 129 | */ |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 130 | struct ieee80211_tx_queue_stats { |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 131 | unsigned int len; |
| 132 | unsigned int limit; |
| 133 | unsigned int count; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 134 | }; |
| 135 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 136 | struct ieee80211_low_level_stats { |
| 137 | unsigned int dot11ACKFailureCount; |
| 138 | unsigned int dot11RTSFailureCount; |
| 139 | unsigned int dot11FCSErrorCount; |
| 140 | unsigned int dot11RTSSuccessCount; |
| 141 | }; |
| 142 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 143 | /** |
| 144 | * enum ieee80211_bss_change - BSS change notification flags |
| 145 | * |
| 146 | * These flags are used with the bss_info_changed() callback |
| 147 | * to indicate which BSS parameter changed. |
| 148 | * |
| 149 | * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), |
| 150 | * also implies a change in the AID. |
| 151 | * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed |
| 152 | * @BSS_CHANGED_ERP_PREAMBLE: preamble changed |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 153 | * @BSS_CHANGED_ERP_SLOT: slot timing changed |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 154 | * @BSS_CHANGED_HT: 802.11n parameters changed |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 155 | * @BSS_CHANGED_BASIC_RATES: Basic rateset changed |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 156 | */ |
| 157 | enum ieee80211_bss_change { |
| 158 | BSS_CHANGED_ASSOC = 1<<0, |
| 159 | BSS_CHANGED_ERP_CTS_PROT = 1<<1, |
| 160 | BSS_CHANGED_ERP_PREAMBLE = 1<<2, |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 161 | BSS_CHANGED_ERP_SLOT = 1<<3, |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 162 | BSS_CHANGED_HT = 1<<4, |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 163 | BSS_CHANGED_BASIC_RATES = 1<<5, |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 164 | }; |
| 165 | |
| 166 | /** |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 167 | * struct ieee80211_bss_ht_conf - BSS's changing HT configuration |
| 168 | * @secondary_channel_offset: secondary channel offset, uses |
| 169 | * %IEEE80211_HT_PARAM_CHA_SEC_ values |
| 170 | * @width_40_ok: indicates that 40 MHz bandwidth may be used for TX |
| 171 | * @operation_mode: HT operation mode (like in &struct ieee80211_ht_info) |
| 172 | */ |
| 173 | struct ieee80211_bss_ht_conf { |
| 174 | u8 secondary_channel_offset; |
| 175 | bool width_40_ok; |
| 176 | u16 operation_mode; |
| 177 | }; |
| 178 | |
| 179 | /** |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 180 | * struct ieee80211_bss_conf - holds the BSS's changing parameters |
| 181 | * |
| 182 | * This structure keeps information about a BSS (and an association |
| 183 | * to that BSS) that can change during the lifetime of the BSS. |
| 184 | * |
| 185 | * @assoc: association status |
| 186 | * @aid: association ID number, valid only when @assoc is true |
| 187 | * @use_cts_prot: use CTS protection |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 188 | * @use_short_preamble: use 802.11b short preamble; |
| 189 | * if the hardware cannot handle this it must set the |
| 190 | * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag |
| 191 | * @use_short_slot: use short slot time (only relevant for ERP); |
| 192 | * if the hardware cannot handle this it must set the |
| 193 | * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 194 | * @dtim_period: num of beacons before the next DTIM, for PSM |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 195 | * @timestamp: beacon timestamp |
| 196 | * @beacon_int: beacon interval |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 197 | * @assoc_capability: capabilities taken from assoc resp |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 198 | * @ht: BSS's HT configuration |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 199 | * @basic_rates: bitmap of basic rates, each bit stands for an |
| 200 | * index into the rate table configured by the driver in |
| 201 | * the current band. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 202 | */ |
| 203 | struct ieee80211_bss_conf { |
| 204 | /* association related data */ |
| 205 | bool assoc; |
| 206 | u16 aid; |
| 207 | /* erp related data */ |
| 208 | bool use_cts_prot; |
| 209 | bool use_short_preamble; |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 210 | bool use_short_slot; |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 211 | u8 dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 212 | u16 beacon_int; |
| 213 | u16 assoc_capability; |
| 214 | u64 timestamp; |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 215 | u64 basic_rates; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 216 | struct ieee80211_bss_ht_conf ht; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 217 | }; |
| 218 | |
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 | * enum mac80211_tx_control_flags - flags to describe transmission information/status |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 221 | * |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 222 | * These flags are used with the @flags member of &ieee80211_tx_info. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 223 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 224 | * @IEEE80211_TX_CTL_REQ_TX_STATUS: request TX status callback for this frame. |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 225 | * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence |
| 226 | * number to this frame, taking care of not overwriting the fragment |
| 227 | * number and increasing the sequence number only when the |
| 228 | * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly |
| 229 | * assign sequence numbers to QoS-data frames but cannot do so correctly |
| 230 | * for non-QoS-data and management frames because beacons need them from |
| 231 | * that counter as well and mac80211 cannot guarantee proper sequencing. |
| 232 | * If this flag is set, the driver should instruct the hardware to |
| 233 | * assign a sequence number to the frame or assign one itself. Cf. IEEE |
| 234 | * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for |
| 235 | * beacons and always be clear for frames without a sequence number field. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 236 | * @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] | 237 | * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination |
| 238 | * station |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 239 | * @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] | 240 | * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon |
| 241 | * @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] | 242 | * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 243 | * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted |
| 244 | * because the destination STA was in powersave mode. |
| 245 | * @IEEE80211_TX_STAT_ACK: Frame was acknowledged |
| 246 | * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status |
| 247 | * is for the whole aggregation. |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 248 | * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, |
| 249 | * so consider using block ack request (BAR). |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 250 | * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be |
| 251 | * set by rate control algorithms to indicate probe rate, will |
| 252 | * be cleared for fragmented frames (except on the last fragment) |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 253 | */ |
| 254 | enum mac80211_tx_control_flags { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 255 | IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 256 | IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), |
| 257 | IEEE80211_TX_CTL_NO_ACK = BIT(2), |
| 258 | IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), |
| 259 | IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), |
| 260 | IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), |
| 261 | IEEE80211_TX_CTL_AMPDU = BIT(6), |
| 262 | IEEE80211_TX_CTL_INJECTED = BIT(7), |
| 263 | IEEE80211_TX_STAT_TX_FILTERED = BIT(8), |
| 264 | IEEE80211_TX_STAT_ACK = BIT(9), |
| 265 | IEEE80211_TX_STAT_AMPDU = BIT(10), |
| 266 | IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), |
| 267 | IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 268 | }; |
| 269 | |
| 270 | enum mac80211_rate_control_flags { |
| 271 | IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), |
| 272 | IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), |
| 273 | IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), |
| 274 | |
| 275 | /* rate index is an MCS rate number instead of an index */ |
| 276 | IEEE80211_TX_RC_MCS = BIT(3), |
| 277 | IEEE80211_TX_RC_GREEN_FIELD = BIT(4), |
| 278 | IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), |
| 279 | IEEE80211_TX_RC_DUP_DATA = BIT(6), |
| 280 | IEEE80211_TX_RC_SHORT_GI = BIT(7), |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 281 | }; |
| 282 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 283 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 284 | /* there are 40 bytes if you don't need the rateset to be kept */ |
| 285 | #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 286 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 287 | /* if you do need the rateset, then you have less space */ |
| 288 | #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 |
| 289 | |
| 290 | /* maximum number of rate stages */ |
| 291 | #define IEEE80211_TX_MAX_RATES 5 |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 292 | |
| 293 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 294 | * struct ieee80211_tx_rate - rate selection/status |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 295 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 296 | * @idx: rate index to attempt to send with |
| 297 | * @flags: rate control flags (&enum mac80211_rate_control_flags) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 298 | * @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] | 299 | * |
| 300 | * A value of -1 for @idx indicates an invalid rate and, if used |
| 301 | * in an array of retry rates, that no more rates should be tried. |
| 302 | * |
| 303 | * When used for transmit status reporting, the driver should |
| 304 | * always report the rate along with the flags it used. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 305 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 306 | struct ieee80211_tx_rate { |
| 307 | s8 idx; |
| 308 | u8 count; |
| 309 | u8 flags; |
Felix Fietkau | 4821277 | 2008-11-03 21:05:01 +0100 | [diff] [blame] | 310 | } __attribute__((packed)); |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 311 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 312 | /** |
| 313 | * struct ieee80211_tx_info - skb transmit information |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 314 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 315 | * This structure is placed in skb->cb for three uses: |
| 316 | * (1) mac80211 TX control - mac80211 tells the driver what to do |
| 317 | * (2) driver internal use (if applicable) |
| 318 | * (3) TX status information - driver tells mac80211 what happened |
| 319 | * |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 320 | * The TX control's sta pointer is only valid during the ->tx call, |
| 321 | * it may be NULL. |
| 322 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 323 | * @flags: transmit info flags, defined above |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 324 | * @band: the band to transmit on (use for checking for races) |
Johannes Berg | 0f4ac38 | 2008-10-09 12:18:04 +0200 | [diff] [blame] | 325 | * @antenna_sel_tx: antenna to use, 0 for automatic diversity |
Kalle Valo | 8bef7a1 | 2008-11-30 20:56:28 +0200 | [diff] [blame] | 326 | * @pad: padding, ignore |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 327 | * @control: union for control data |
| 328 | * @status: union for status data |
| 329 | * @driver_data: array of driver_data pointers |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 330 | * @retry_count: number of retries |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 331 | * @ampdu_ack_len: number of aggregated frames. |
| 332 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. |
| 333 | * @ampdu_ack_map: block ack bit map for the aggregation. |
| 334 | * relevant only if IEEE80211_TX_STATUS_AMPDU was set. |
| 335 | * @ack_signal: signal strength of the ACK frame |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 336 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 337 | struct ieee80211_tx_info { |
| 338 | /* common information */ |
| 339 | u32 flags; |
| 340 | u8 band; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 341 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 342 | u8 antenna_sel_tx; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 343 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 344 | /* 2 byte hole */ |
John W. Linville | 6272710 | 2008-11-12 10:01:41 -0500 | [diff] [blame] | 345 | u8 pad[2]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 346 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 347 | union { |
| 348 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 349 | union { |
| 350 | /* rate control */ |
| 351 | struct { |
| 352 | struct ieee80211_tx_rate rates[ |
| 353 | IEEE80211_TX_MAX_RATES]; |
| 354 | s8 rts_cts_rate_idx; |
| 355 | }; |
| 356 | /* only needed before rate control */ |
| 357 | unsigned long jiffies; |
| 358 | }; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 359 | /* NB: vif can be NULL for injected frames */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 360 | struct ieee80211_vif *vif; |
| 361 | struct ieee80211_key_conf *hw_key; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 362 | struct ieee80211_sta *sta; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 363 | } control; |
| 364 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 365 | struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; |
| 366 | u8 ampdu_ack_len; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 367 | u64 ampdu_ack_map; |
| 368 | int ack_signal; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 369 | /* 8 bytes free */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 370 | } status; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 371 | struct { |
| 372 | struct ieee80211_tx_rate driver_rates[ |
| 373 | IEEE80211_TX_MAX_RATES]; |
| 374 | void *rate_driver_data[ |
| 375 | IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; |
| 376 | }; |
| 377 | void *driver_data[ |
| 378 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 379 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 380 | }; |
| 381 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 382 | static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) |
| 383 | { |
| 384 | return (struct ieee80211_tx_info *)skb->cb; |
| 385 | } |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 386 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 387 | /** |
| 388 | * ieee80211_tx_info_clear_status - clear TX status |
| 389 | * |
| 390 | * @info: The &struct ieee80211_tx_info to be cleared. |
| 391 | * |
| 392 | * When the driver passes an skb back to mac80211, it must report |
| 393 | * a number of things in TX status. This function clears everything |
| 394 | * in the TX status but the rate control information (it does clear |
| 395 | * the count since you need to fill that in anyway). |
| 396 | * |
| 397 | * NOTE: You can only use this function if you do NOT use |
| 398 | * info->driver_data! Use info->rate_driver_data |
| 399 | * instead if you need only the less space that allows. |
| 400 | */ |
| 401 | static inline void |
| 402 | ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) |
| 403 | { |
| 404 | int i; |
| 405 | |
| 406 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 407 | offsetof(struct ieee80211_tx_info, control.rates)); |
| 408 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 409 | offsetof(struct ieee80211_tx_info, driver_rates)); |
| 410 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); |
| 411 | /* clear the rate counts */ |
| 412 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) |
| 413 | info->status.rates[i].count = 0; |
| 414 | |
| 415 | BUILD_BUG_ON( |
| 416 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); |
| 417 | memset(&info->status.ampdu_ack_len, 0, |
| 418 | sizeof(struct ieee80211_tx_info) - |
| 419 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); |
| 420 | } |
| 421 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 422 | |
| 423 | /** |
| 424 | * enum mac80211_rx_flags - receive flags |
| 425 | * |
| 426 | * These flags are used with the @flag member of &struct ieee80211_rx_status. |
| 427 | * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. |
| 428 | * Use together with %RX_FLAG_MMIC_STRIPPED. |
| 429 | * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. |
| 430 | * @RX_FLAG_RADIOTAP: This frame starts with a radiotap header. |
| 431 | * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, |
| 432 | * verification has been done by the hardware. |
| 433 | * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. |
| 434 | * If this flag is set, the stack cannot do any replay detection |
| 435 | * hence the driver or hardware will have to do that. |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 436 | * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on |
| 437 | * the frame. |
| 438 | * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on |
| 439 | * the frame. |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 440 | * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 441 | * is valid. This is useful in monitor mode and necessary for beacon frames |
| 442 | * to enable IBSS merging. |
Bruno Randolf | b4f28bb | 2008-07-30 17:19:55 +0200 | [diff] [blame] | 443 | * @RX_FLAG_SHORTPRE: Short preamble was used for this frame |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 444 | */ |
| 445 | enum mac80211_rx_flags { |
| 446 | RX_FLAG_MMIC_ERROR = 1<<0, |
| 447 | RX_FLAG_DECRYPTED = 1<<1, |
| 448 | RX_FLAG_RADIOTAP = 1<<2, |
| 449 | RX_FLAG_MMIC_STRIPPED = 1<<3, |
| 450 | RX_FLAG_IV_STRIPPED = 1<<4, |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 451 | RX_FLAG_FAILED_FCS_CRC = 1<<5, |
| 452 | RX_FLAG_FAILED_PLCP_CRC = 1<<6, |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 453 | RX_FLAG_TSFT = 1<<7, |
Bruno Randolf | b4f28bb | 2008-07-30 17:19:55 +0200 | [diff] [blame] | 454 | RX_FLAG_SHORTPRE = 1<<8 |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 455 | }; |
| 456 | |
| 457 | /** |
| 458 | * struct ieee80211_rx_status - receive status |
| 459 | * |
| 460 | * The low-level driver should provide this information (the subset |
| 461 | * supported by hardware) to the 802.11 code with each received |
| 462 | * frame. |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 463 | * |
Bruno Randolf | c132bec | 2008-02-18 11:20:51 +0900 | [diff] [blame] | 464 | * @mactime: value in microseconds of the 64-bit Time Synchronization Function |
| 465 | * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 466 | * @band: the active band when this frame was received |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 467 | * @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] | 468 | * @signal: signal strength when receiving this frame, either in dBm, in dB or |
| 469 | * unspecified depending on the hardware capabilities flags |
| 470 | * @IEEE80211_HW_SIGNAL_* |
| 471 | * @noise: noise when receiving this frame, in dBm. |
| 472 | * @qual: overall signal quality indication, in percent (0-100). |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 473 | * @antenna: antenna used |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 474 | * @rate_idx: index of data rate into band's supported rates |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 475 | * @flag: %RX_FLAG_* |
| 476 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 477 | struct ieee80211_rx_status { |
| 478 | u64 mactime; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 479 | enum ieee80211_band band; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 480 | int freq; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 481 | int signal; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 482 | int noise; |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 483 | int qual; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 484 | int antenna; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 485 | int rate_idx; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 486 | int flag; |
| 487 | }; |
| 488 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 489 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 490 | * enum ieee80211_conf_flags - configuration flags |
| 491 | * |
| 492 | * Flags to define PHY configuration options |
| 493 | * |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 494 | * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported) |
Samuel Ortiz | 49292d5 | 2008-07-04 10:49:31 +0200 | [diff] [blame] | 495 | * @IEEE80211_CONF_PS: Enable 802.11 power save mode |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 496 | */ |
| 497 | enum ieee80211_conf_flags { |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 498 | IEEE80211_CONF_RADIOTAP = (1<<0), |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 499 | IEEE80211_CONF_PS = (1<<1), |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 500 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 501 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 502 | /* XXX: remove all this once drivers stop trying to use it */ |
| 503 | static inline int __deprecated __IEEE80211_CONF_SHORT_SLOT_TIME(void) |
| 504 | { |
| 505 | return 0; |
| 506 | } |
| 507 | #define IEEE80211_CONF_SHORT_SLOT_TIME (__IEEE80211_CONF_SHORT_SLOT_TIME()) |
| 508 | |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 509 | struct ieee80211_ht_conf { |
| 510 | bool enabled; |
Jouni Malinen | 72bdcf3 | 2008-11-26 16:15:24 +0200 | [diff] [blame] | 511 | int sec_chan_offset; /* 0 = HT40 disabled; -1 = HT40 enabled, secondary |
| 512 | * channel below primary; 1 = HT40 enabled, |
| 513 | * secondary channel above primary */ |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 514 | }; |
| 515 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 516 | /** |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 517 | * enum ieee80211_conf_changed - denotes which configuration changed |
| 518 | * |
| 519 | * @IEEE80211_CONF_CHANGE_RADIO_ENABLED: the value of radio_enabled changed |
| 520 | * @IEEE80211_CONF_CHANGE_BEACON_INTERVAL: the beacon interval changed |
| 521 | * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed |
| 522 | * @IEEE80211_CONF_CHANGE_RADIOTAP: the radiotap flag changed |
| 523 | * @IEEE80211_CONF_CHANGE_PS: the PS flag changed |
| 524 | * @IEEE80211_CONF_CHANGE_POWER: the TX power changed |
| 525 | * @IEEE80211_CONF_CHANGE_CHANNEL: the channel changed |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 526 | * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 527 | * @IEEE80211_CONF_CHANGE_HT: HT configuration changed |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 528 | */ |
| 529 | enum ieee80211_conf_changed { |
| 530 | IEEE80211_CONF_CHANGE_RADIO_ENABLED = BIT(0), |
| 531 | IEEE80211_CONF_CHANGE_BEACON_INTERVAL = BIT(1), |
| 532 | IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), |
| 533 | IEEE80211_CONF_CHANGE_RADIOTAP = BIT(3), |
| 534 | IEEE80211_CONF_CHANGE_PS = BIT(4), |
| 535 | IEEE80211_CONF_CHANGE_POWER = BIT(5), |
| 536 | IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 537 | IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 538 | IEEE80211_CONF_CHANGE_HT = BIT(8), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 539 | }; |
| 540 | |
| 541 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 542 | * struct ieee80211_conf - configuration of the device |
| 543 | * |
| 544 | * This struct indicates how the driver shall configure the hardware. |
| 545 | * |
| 546 | * @radio_enabled: when zero, driver is required to switch off the radio. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 547 | * @beacon_int: beacon interval (TODO make interface config) |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 548 | * @listen_interval: listen interval in units of beacon interval |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 549 | * @flags: configuration flags defined above |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 550 | * @power_level: requested transmit power (in dBm) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 551 | * @channel: the channel to tune to |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 552 | * @ht: the HT configuration for the device |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 553 | * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame |
| 554 | * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, |
| 555 | * but actually means the number of transmissions not the number of retries |
| 556 | * @short_frame_max_tx_count: Maximum number of transmissions for a "short" |
| 557 | * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the |
| 558 | * number of transmissions not the number of retries |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 559 | */ |
| 560 | struct ieee80211_conf { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 561 | int beacon_int; |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 562 | u32 flags; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 563 | int power_level; |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 564 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 565 | u16 listen_interval; |
| 566 | bool radio_enabled; |
| 567 | |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 568 | u8 long_frame_max_tx_count, short_frame_max_tx_count; |
| 569 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 570 | struct ieee80211_channel *channel; |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 571 | struct ieee80211_ht_conf ht; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 572 | }; |
| 573 | |
| 574 | /** |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 575 | * struct ieee80211_vif - per-interface data |
| 576 | * |
| 577 | * Data in this structure is continually present for driver |
| 578 | * use during the life of a virtual interface. |
| 579 | * |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 580 | * @type: type of this virtual interface |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 581 | * @bss_conf: BSS configuration for this interface, either our own |
| 582 | * or the BSS we're associated to |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 583 | * @drv_priv: data area for driver use, will always be aligned to |
| 584 | * sizeof(void *). |
| 585 | */ |
| 586 | struct ieee80211_vif { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 587 | enum nl80211_iftype type; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 588 | struct ieee80211_bss_conf bss_conf; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 589 | /* must be last */ |
| 590 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 591 | }; |
| 592 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 593 | static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) |
| 594 | { |
| 595 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 596 | return vif->type == NL80211_IFTYPE_MESH_POINT; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 597 | #endif |
| 598 | return false; |
| 599 | } |
| 600 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 601 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 602 | * struct ieee80211_if_init_conf - initial configuration of an interface |
| 603 | * |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 604 | * @vif: pointer to a driver-use per-interface structure. The pointer |
| 605 | * itself is also used for various functions including |
| 606 | * ieee80211_beacon_get() and ieee80211_get_buffered_bc(). |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 607 | * @type: one of &enum nl80211_iftype constants. Determines the type of |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 608 | * added/removed interface. |
| 609 | * @mac_addr: pointer to MAC address of the interface. This pointer is valid |
| 610 | * until the interface is removed (i.e. it cannot be used after |
| 611 | * remove_interface() callback was called for this interface). |
| 612 | * |
| 613 | * This structure is used in add_interface() and remove_interface() |
| 614 | * callbacks of &struct ieee80211_hw. |
Johannes Berg | 4480f15c | 2007-07-10 19:32:10 +0200 | [diff] [blame] | 615 | * |
| 616 | * When you allow multiple interfaces to be added to your PHY, take care |
| 617 | * that the hardware can actually handle multiple MAC addresses. However, |
| 618 | * also take care that when there's no interface left with mac_addr != %NULL |
| 619 | * you remove the MAC address from the device to avoid acknowledging packets |
| 620 | * in pure monitor mode. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 621 | */ |
| 622 | struct ieee80211_if_init_conf { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 623 | enum nl80211_iftype type; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 624 | struct ieee80211_vif *vif; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 625 | void *mac_addr; |
| 626 | }; |
| 627 | |
| 628 | /** |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 629 | * enum ieee80211_if_conf_change - interface config change flags |
| 630 | * |
| 631 | * @IEEE80211_IFCC_BSSID: The BSSID changed. |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 632 | * @IEEE80211_IFCC_BEACON: The beacon for this interface changed |
| 633 | * (currently AP and MESH only), use ieee80211_beacon_get(). |
| 634 | */ |
| 635 | enum ieee80211_if_conf_change { |
| 636 | IEEE80211_IFCC_BSSID = BIT(0), |
Johannes Berg | 41bb73e | 2008-10-29 01:09:37 +0100 | [diff] [blame] | 637 | IEEE80211_IFCC_BEACON = BIT(1), |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 638 | }; |
| 639 | |
| 640 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 641 | * struct ieee80211_if_conf - configuration of an interface |
| 642 | * |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 643 | * @changed: parameters that have changed, see &enum ieee80211_if_conf_change. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 644 | * @bssid: BSSID of the network we are associated to/creating. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 645 | * |
| 646 | * This structure is passed to the config_interface() callback of |
| 647 | * &struct ieee80211_hw. |
| 648 | */ |
| 649 | struct ieee80211_if_conf { |
Johannes Berg | 9d139c8 | 2008-07-09 14:40:37 +0200 | [diff] [blame] | 650 | u32 changed; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 651 | u8 *bssid; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 652 | }; |
| 653 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 654 | /** |
| 655 | * enum ieee80211_key_alg - key algorithm |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 656 | * @ALG_WEP: WEP40 or WEP104 |
| 657 | * @ALG_TKIP: TKIP |
| 658 | * @ALG_CCMP: CCMP (AES) |
| 659 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 660 | enum ieee80211_key_alg { |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 661 | ALG_WEP, |
| 662 | ALG_TKIP, |
| 663 | ALG_CCMP, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 664 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 665 | |
Emmanuel Grumbach | 23976ef | 2008-06-28 02:50:13 +0300 | [diff] [blame] | 666 | /** |
| 667 | * enum ieee80211_key_len - key length |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 668 | * @LEN_WEP40: WEP 5-byte long key |
| 669 | * @LEN_WEP104: WEP 13-byte long key |
Emmanuel Grumbach | 23976ef | 2008-06-28 02:50:13 +0300 | [diff] [blame] | 670 | */ |
| 671 | enum ieee80211_key_len { |
| 672 | LEN_WEP40 = 5, |
| 673 | LEN_WEP104 = 13, |
| 674 | }; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 675 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 676 | /** |
| 677 | * enum ieee80211_key_flags - key flags |
| 678 | * |
| 679 | * These flags are used for communication about keys between the driver |
| 680 | * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. |
| 681 | * |
| 682 | * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates |
| 683 | * that the STA this key will be used with could be using QoS. |
| 684 | * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the |
| 685 | * driver to indicate that it requires IV generation for this |
| 686 | * particular key. |
| 687 | * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by |
| 688 | * the driver for a TKIP key if it requires Michael MIC |
| 689 | * generation in software. |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 690 | * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates |
| 691 | * that the key is pairwise rather then a shared key. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 692 | */ |
| 693 | enum ieee80211_key_flags { |
| 694 | IEEE80211_KEY_FLAG_WMM_STA = 1<<0, |
| 695 | IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, |
| 696 | IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 697 | IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 698 | }; |
| 699 | |
| 700 | /** |
| 701 | * struct ieee80211_key_conf - key information |
| 702 | * |
| 703 | * This key information is given by mac80211 to the driver by |
| 704 | * the set_key() callback in &struct ieee80211_ops. |
| 705 | * |
| 706 | * @hw_key_idx: To be set by the driver, this is the key index the driver |
| 707 | * 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] | 708 | * encrypted in hardware. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 709 | * @alg: The key algorithm. |
| 710 | * @flags: key flags, see &enum ieee80211_key_flags. |
| 711 | * @keyidx: the key index (0-3) |
| 712 | * @keylen: key material length |
Luis R. Rodriguez | ffd7891 | 2008-06-21 10:02:46 -0400 | [diff] [blame] | 713 | * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) |
| 714 | * data block: |
| 715 | * - Temporal Encryption Key (128 bits) |
| 716 | * - Temporal Authenticator Tx MIC Key (64 bits) |
| 717 | * - Temporal Authenticator Rx MIC Key (64 bits) |
Randy Dunlap | e1a65b5 | 2008-10-13 09:15:01 -0700 | [diff] [blame] | 718 | * @icv_len: FIXME |
| 719 | * @iv_len: FIXME |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 720 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 721 | struct ieee80211_key_conf { |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 722 | enum ieee80211_key_alg alg; |
Felix Fietkau | 76708de | 2008-10-05 18:02:48 +0200 | [diff] [blame] | 723 | u8 icv_len; |
| 724 | u8 iv_len; |
Johannes Berg | 6a7664d | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 725 | u8 hw_key_idx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 726 | u8 flags; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 727 | s8 keyidx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 728 | u8 keylen; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 729 | u8 key[0]; |
| 730 | }; |
| 731 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 732 | /** |
| 733 | * enum set_key_cmd - key command |
| 734 | * |
| 735 | * Used with the set_key() callback in &struct ieee80211_ops, this |
| 736 | * indicates whether a key is being removed or added. |
| 737 | * |
| 738 | * @SET_KEY: a key is set |
| 739 | * @DISABLE_KEY: a key must be disabled |
| 740 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 741 | enum set_key_cmd { |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 742 | SET_KEY, DISABLE_KEY, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 743 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 744 | |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 745 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 746 | * struct ieee80211_sta - station table entry |
| 747 | * |
| 748 | * A station table entry represents a station we are possibly |
| 749 | * communicating with. Since stations are RCU-managed in |
| 750 | * mac80211, any ieee80211_sta pointer you get access to must |
| 751 | * either be protected by rcu_read_lock() explicitly or implicitly, |
| 752 | * or you must take good care to not use such a pointer after a |
| 753 | * call to your sta_notify callback that removed it. |
| 754 | * |
| 755 | * @addr: MAC address |
| 756 | * @aid: AID we assigned to the station if we're an AP |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 757 | * @supp_rates: Bitmap of supported rates (per band) |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 758 | * @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] | 759 | * @drv_priv: data area for driver use, will always be aligned to |
| 760 | * sizeof(void *), size is determined in hw information. |
| 761 | */ |
| 762 | struct ieee80211_sta { |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 763 | u64 supp_rates[IEEE80211_NUM_BANDS]; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 764 | u8 addr[ETH_ALEN]; |
| 765 | u16 aid; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 766 | struct ieee80211_sta_ht_cap ht_cap; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 767 | |
| 768 | /* must be last */ |
| 769 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 770 | }; |
| 771 | |
| 772 | /** |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 773 | * enum sta_notify_cmd - sta notify command |
| 774 | * |
| 775 | * Used with the sta_notify() callback in &struct ieee80211_ops, this |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 776 | * indicates addition and removal of a station to station table. |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 777 | * |
| 778 | * @STA_NOTIFY_ADD: a station was added to the station table |
| 779 | * @STA_NOTIFY_REMOVE: a station being removed from the station table |
| 780 | */ |
| 781 | enum sta_notify_cmd { |
| 782 | STA_NOTIFY_ADD, STA_NOTIFY_REMOVE |
| 783 | }; |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 784 | |
| 785 | /** |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 786 | * enum sta_notify_ps_cmd - sta power save notify command |
| 787 | * |
| 788 | * Used with the sta_notify_ps() callback in &struct ieee80211_ops to |
| 789 | * notify the driver if a station made a power state transition. |
| 790 | * |
| 791 | * @STA_NOTIFY_SLEEP: a station is now sleeping |
| 792 | * @STA_NOTIFY_AWAKE: a sleeping station woke up |
| 793 | */ |
| 794 | enum sta_notify_ps_cmd { |
| 795 | STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, |
| 796 | }; |
| 797 | |
| 798 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 799 | * enum ieee80211_tkip_key_type - get tkip key |
| 800 | * |
| 801 | * Used by drivers which need to get a tkip key for skb. Some drivers need a |
| 802 | * phase 1 key, others need a phase 2 key. A single function allows the driver |
| 803 | * to get the key, this enum indicates what type of key is required. |
| 804 | * |
| 805 | * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key |
| 806 | * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key |
| 807 | */ |
| 808 | enum ieee80211_tkip_key_type { |
| 809 | IEEE80211_TKIP_P1_KEY, |
| 810 | IEEE80211_TKIP_P2_KEY, |
| 811 | }; |
| 812 | |
| 813 | /** |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 814 | * enum ieee80211_hw_flags - hardware flags |
| 815 | * |
| 816 | * These flags are used to indicate hardware capabilities to |
| 817 | * the stack. Generally, flags here should have their meaning |
| 818 | * done in a way that the simplest hardware doesn't need setting |
| 819 | * any particular flags. There are some exceptions to this rule, |
| 820 | * however, so you are advised to review these flags carefully. |
| 821 | * |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 822 | * @IEEE80211_HW_RX_INCLUDES_FCS: |
| 823 | * Indicates that received frames passed to the stack include |
| 824 | * the FCS at the end. |
| 825 | * |
| 826 | * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: |
| 827 | * Some wireless LAN chipsets buffer broadcast/multicast frames |
| 828 | * for power saving stations in the hardware/firmware and others |
| 829 | * rely on the host system for such buffering. This option is used |
| 830 | * to configure the IEEE 802.11 upper layer to buffer broadcast and |
| 831 | * multicast frames when there are power saving stations so that |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 832 | * the driver can fetch them with ieee80211_get_buffered_bc(). |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 833 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 834 | * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: |
| 835 | * Hardware is not capable of short slot operation on the 2.4 GHz band. |
| 836 | * |
| 837 | * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: |
| 838 | * Hardware is not capable of receiving frames with short preamble on |
| 839 | * the 2.4 GHz band. |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 840 | * |
| 841 | * @IEEE80211_HW_SIGNAL_UNSPEC: |
| 842 | * Hardware can provide signal values but we don't know its units. We |
| 843 | * expect values between 0 and @max_signal. |
| 844 | * If possible please provide dB or dBm instead. |
| 845 | * |
| 846 | * @IEEE80211_HW_SIGNAL_DB: |
| 847 | * Hardware gives signal values in dB, decibel difference from an |
| 848 | * arbitrary, fixed reference. We expect values between 0 and @max_signal. |
| 849 | * If possible please provide dBm instead. |
| 850 | * |
| 851 | * @IEEE80211_HW_SIGNAL_DBM: |
| 852 | * Hardware gives signal values in dBm, decibel difference from |
| 853 | * one milliwatt. This is the preferred method since it is standardized |
| 854 | * between different devices. @max_signal does not need to be set. |
| 855 | * |
| 856 | * @IEEE80211_HW_NOISE_DBM: |
| 857 | * Hardware can provide noise (radio interference) values in units dBm, |
| 858 | * decibel difference from one milliwatt. |
Tomas Winkler | 06ff47b | 2008-06-18 17:53:44 +0300 | [diff] [blame] | 859 | * |
| 860 | * @IEEE80211_HW_SPECTRUM_MGMT: |
| 861 | * Hardware supports spectrum management defined in 802.11h |
| 862 | * Measurement, Channel Switch, Quieting, TPC |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 863 | * |
| 864 | * @IEEE80211_HW_AMPDU_AGGREGATION: |
| 865 | * Hardware supports 11n A-MPDU aggregation. |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 866 | */ |
| 867 | enum ieee80211_hw_flags { |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 868 | IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, |
| 869 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 870 | IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, |
| 871 | IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 872 | IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, |
| 873 | IEEE80211_HW_SIGNAL_DB = 1<<6, |
| 874 | IEEE80211_HW_SIGNAL_DBM = 1<<7, |
| 875 | IEEE80211_HW_NOISE_DBM = 1<<8, |
Tomas Winkler | 06ff47b | 2008-06-18 17:53:44 +0300 | [diff] [blame] | 876 | IEEE80211_HW_SPECTRUM_MGMT = 1<<9, |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 877 | IEEE80211_HW_AMPDU_AGGREGATION = 1<<10, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 878 | }; |
| 879 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 880 | /** |
| 881 | * struct ieee80211_hw - hardware information and state |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 882 | * |
| 883 | * This structure contains the configuration and hardware |
| 884 | * information for an 802.11 PHY. |
| 885 | * |
| 886 | * @wiphy: This points to the &struct wiphy allocated for this |
| 887 | * 802.11 PHY. You must fill in the @perm_addr and @dev |
| 888 | * members of this structure using SET_IEEE80211_DEV() |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 889 | * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported |
| 890 | * bands (with channels, bitrates) are registered here. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 891 | * |
| 892 | * @conf: &struct ieee80211_conf, device configuration, don't use. |
| 893 | * |
| 894 | * @workqueue: single threaded workqueue available for driver use, |
Ivo van Doorn | 428da76 | 2008-06-24 19:23:36 +0200 | [diff] [blame] | 895 | * allocated by mac80211 on registration and flushed when an |
| 896 | * interface is removed. |
| 897 | * NOTICE: All work performed on this workqueue should NEVER |
| 898 | * acquire the RTNL lock (i.e. Don't use the function |
| 899 | * ieee80211_iterate_active_interfaces()) |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 900 | * |
| 901 | * @priv: pointer to private area that was allocated for driver use |
| 902 | * along with this structure. |
| 903 | * |
| 904 | * @flags: hardware flags, see &enum ieee80211_hw_flags. |
| 905 | * |
| 906 | * @extra_tx_headroom: headroom to reserve in each transmit skb |
| 907 | * for use by the driver (e.g. for transmit headers.) |
| 908 | * |
| 909 | * @channel_change_time: time (in microseconds) it takes to change channels. |
| 910 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 911 | * @max_signal: Maximum value for signal (rssi) in RX information, used |
| 912 | * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 913 | * |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 914 | * @max_listen_interval: max listen interval in units of beacon interval |
| 915 | * that HW supports |
| 916 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 917 | * @queues: number of available hardware transmit queues for |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 918 | * data packets. WMM/QoS requires at least four, these |
| 919 | * queues need to have configurable access parameters. |
| 920 | * |
| 921 | * @ampdu_queues: number of available hardware transmit queues |
| 922 | * for A-MPDU packets, these have no access parameters |
| 923 | * because they're used only for A-MPDU frames. Note that |
| 924 | * mac80211 will not currently use any of the regular queues |
| 925 | * for aggregation. |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 926 | * |
| 927 | * @rate_control_algorithm: rate control algorithm for this hardware. |
| 928 | * If unset (NULL), the default algorithm will be used. Must be |
| 929 | * set before calling ieee80211_register_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 930 | * |
| 931 | * @vif_data_size: size (in bytes) of the drv_priv data area |
| 932 | * within &struct ieee80211_vif. |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 933 | * @sta_data_size: size (in bytes) of the drv_priv data area |
| 934 | * within &struct ieee80211_sta. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 935 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 936 | * @max_rates: maximum number of alternate rate retry stages |
| 937 | * @max_rate_tries: maximum number of tries for each stage |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 938 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 939 | struct ieee80211_hw { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 940 | struct ieee80211_conf conf; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 941 | struct wiphy *wiphy; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 942 | struct workqueue_struct *workqueue; |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 943 | const char *rate_control_algorithm; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 944 | void *priv; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 945 | u32 flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 946 | unsigned int extra_tx_headroom; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 947 | int channel_change_time; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 948 | int vif_data_size; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 949 | int sta_data_size; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 950 | u16 queues; |
| 951 | u16 ampdu_queues; |
| 952 | u16 max_listen_interval; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 953 | s8 max_signal; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 954 | u8 max_rates; |
| 955 | u8 max_rate_tries; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 956 | }; |
| 957 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 958 | /** |
| 959 | * SET_IEEE80211_DEV - set device for 802.11 hardware |
| 960 | * |
| 961 | * @hw: the &struct ieee80211_hw to set the device for |
| 962 | * @dev: the &struct device of this 802.11 device |
| 963 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 964 | static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) |
| 965 | { |
| 966 | set_wiphy_dev(hw->wiphy, dev); |
| 967 | } |
| 968 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 969 | /** |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 970 | * 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] | 971 | * |
| 972 | * @hw: the &struct ieee80211_hw to set the MAC address for |
| 973 | * @addr: the address to set |
| 974 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 975 | static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) |
| 976 | { |
| 977 | memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); |
| 978 | } |
| 979 | |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 980 | static inline int ieee80211_num_regular_queues(struct ieee80211_hw *hw) |
| 981 | { |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 982 | return hw->queues; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 983 | } |
| 984 | |
| 985 | static inline int ieee80211_num_queues(struct ieee80211_hw *hw) |
| 986 | { |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 987 | return hw->queues + hw->ampdu_queues; |
Johannes Berg | e253008 | 2008-05-17 00:57:14 +0200 | [diff] [blame] | 988 | } |
| 989 | |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 990 | static inline struct ieee80211_rate * |
| 991 | ieee80211_get_tx_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 992 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 993 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 994 | if (WARN_ON(c->control.rates[0].idx < 0)) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 995 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 996 | return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 997 | } |
| 998 | |
| 999 | static inline struct ieee80211_rate * |
| 1000 | ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1001 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1002 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1003 | if (c->control.rts_cts_rate_idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1004 | return NULL; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1005 | 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] | 1006 | } |
| 1007 | |
| 1008 | static inline struct ieee80211_rate * |
| 1009 | ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 1010 | const struct ieee80211_tx_info *c, int idx) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1011 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1012 | if (c->control.rates[idx + 1].idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1013 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1014 | 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] | 1015 | } |
| 1016 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1017 | /** |
| 1018 | * DOC: Hardware crypto acceleration |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1019 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1020 | * mac80211 is capable of taking advantage of many hardware |
| 1021 | * acceleration designs for encryption and decryption operations. |
| 1022 | * |
| 1023 | * The set_key() callback in the &struct ieee80211_ops for a given |
| 1024 | * device is called to enable hardware acceleration of encryption and |
| 1025 | * decryption. The callback takes an @address parameter that will be |
| 1026 | * the broadcast address for default keys, the other station's hardware |
| 1027 | * address for individual keys or the zero address for keys that will |
| 1028 | * be used only for transmission. |
| 1029 | * Multiple transmission keys with the same key index may be used when |
| 1030 | * VLANs are configured for an access point. |
| 1031 | * |
| 1032 | * The @local_address parameter will always be set to our own address, |
| 1033 | * this is only relevant if you support multiple local addresses. |
| 1034 | * |
| 1035 | * When transmitting, the TX control data will use the @hw_key_idx |
| 1036 | * selected by the driver by modifying the &struct ieee80211_key_conf |
| 1037 | * pointed to by the @key parameter to the set_key() function. |
| 1038 | * |
| 1039 | * The set_key() call for the %SET_KEY command should return 0 if |
| 1040 | * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be |
| 1041 | * added; if you return 0 then hw_key_idx must be assigned to the |
| 1042 | * hardware key index, you are free to use the full u8 range. |
| 1043 | * |
| 1044 | * When the cmd is %DISABLE_KEY then it must succeed. |
| 1045 | * |
| 1046 | * Note that it is permissible to not decrypt a frame even if a key |
| 1047 | * for it has been uploaded to hardware, the stack will not make any |
| 1048 | * decision based on whether a key has been uploaded or not but rather |
| 1049 | * based on the receive flags. |
| 1050 | * |
| 1051 | * The &struct ieee80211_key_conf structure pointed to by the @key |
| 1052 | * parameter is guaranteed to be valid until another call to set_key() |
| 1053 | * removes it, but it can only be used as a cookie to differentiate |
| 1054 | * keys. |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1055 | * |
| 1056 | * In TKIP some HW need to be provided a phase 1 key, for RX decryption |
| 1057 | * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key |
| 1058 | * handler. |
| 1059 | * The update_tkip_key() call updates the driver with the new phase 1 key. |
| 1060 | * This happens everytime the iv16 wraps around (every 65536 packets). The |
| 1061 | * set_key() call will happen only once for each key (unless the AP did |
| 1062 | * 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] | 1063 | * 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] | 1064 | * handler is software decryption with wrap around of iv16. |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1065 | */ |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1066 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1067 | /** |
| 1068 | * DOC: Frame filtering |
| 1069 | * |
| 1070 | * mac80211 requires to see many management frames for proper |
| 1071 | * operation, and users may want to see many more frames when |
| 1072 | * in monitor mode. However, for best CPU usage and power consumption, |
| 1073 | * having as few frames as possible percolate through the stack is |
| 1074 | * desirable. Hence, the hardware should filter as much as possible. |
| 1075 | * |
| 1076 | * To achieve this, mac80211 uses filter flags (see below) to tell |
| 1077 | * the driver's configure_filter() function which frames should be |
| 1078 | * passed to mac80211 and which should be filtered out. |
| 1079 | * |
| 1080 | * The configure_filter() callback is invoked with the parameters |
| 1081 | * @mc_count and @mc_list for the combined multicast address list |
| 1082 | * of all virtual interfaces, @changed_flags telling which flags |
| 1083 | * were changed and @total_flags with the new flag states. |
| 1084 | * |
| 1085 | * If your device has no multicast address filters your driver will |
| 1086 | * need to check both the %FIF_ALLMULTI flag and the @mc_count |
| 1087 | * parameter to see whether multicast frames should be accepted |
| 1088 | * or dropped. |
| 1089 | * |
Michael Buesch | d0f5afb | 2008-02-12 20:12:45 +0100 | [diff] [blame] | 1090 | * All unsupported flags in @total_flags must be cleared. |
| 1091 | * Hardware does not support a flag if it is incapable of _passing_ |
| 1092 | * the frame to the stack. Otherwise the driver must ignore |
| 1093 | * the flag, but not clear it. |
| 1094 | * You must _only_ clear the flag (announce no support for the |
| 1095 | * flag to mac80211) if you are not able to pass the packet type |
| 1096 | * to the stack (so the hardware always filters it). |
| 1097 | * So for example, you should clear @FIF_CONTROL, if your hardware |
| 1098 | * always filters control frames. If your hardware always passes |
| 1099 | * control frames to the kernel and is incapable of filtering them, |
| 1100 | * you do _not_ clear the @FIF_CONTROL flag. |
| 1101 | * This rule applies to all other FIF flags as well. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1102 | */ |
| 1103 | |
| 1104 | /** |
| 1105 | * enum ieee80211_filter_flags - hardware filter flags |
| 1106 | * |
| 1107 | * These flags determine what the filter in hardware should be |
| 1108 | * programmed to let through and what should not be passed to the |
| 1109 | * stack. It is always safe to pass more frames than requested, |
| 1110 | * but this has negative impact on power consumption. |
| 1111 | * |
| 1112 | * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, |
| 1113 | * think of the BSS as your network segment and then this corresponds |
| 1114 | * to the regular ethernet device promiscuous mode. |
| 1115 | * |
| 1116 | * @FIF_ALLMULTI: pass all multicast frames, this is used if requested |
| 1117 | * by the user or if the hardware is not capable of filtering by |
| 1118 | * multicast address. |
| 1119 | * |
| 1120 | * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the |
| 1121 | * %RX_FLAG_FAILED_FCS_CRC for them) |
| 1122 | * |
| 1123 | * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set |
| 1124 | * the %RX_FLAG_FAILED_PLCP_CRC for them |
| 1125 | * |
| 1126 | * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate |
| 1127 | * to the hardware that it should not filter beacons or probe responses |
| 1128 | * by BSSID. Filtering them can greatly reduce the amount of processing |
| 1129 | * mac80211 needs to do and the amount of CPU wakeups, so you should |
| 1130 | * honour this flag if possible. |
| 1131 | * |
| 1132 | * @FIF_CONTROL: pass control frames, if PROMISC_IN_BSS is not set then |
| 1133 | * only those addressed to this station |
| 1134 | * |
| 1135 | * @FIF_OTHER_BSS: pass frames destined to other BSSes |
| 1136 | */ |
| 1137 | enum ieee80211_filter_flags { |
| 1138 | FIF_PROMISC_IN_BSS = 1<<0, |
| 1139 | FIF_ALLMULTI = 1<<1, |
| 1140 | FIF_FCSFAIL = 1<<2, |
| 1141 | FIF_PLCPFAIL = 1<<3, |
| 1142 | FIF_BCN_PRBRESP_PROMISC = 1<<4, |
| 1143 | FIF_CONTROL = 1<<5, |
| 1144 | FIF_OTHER_BSS = 1<<6, |
| 1145 | }; |
| 1146 | |
| 1147 | /** |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1148 | * enum ieee80211_ampdu_mlme_action - A-MPDU actions |
| 1149 | * |
| 1150 | * These flags are used with the ampdu_action() callback in |
| 1151 | * &struct ieee80211_ops to indicate which action is needed. |
| 1152 | * @IEEE80211_AMPDU_RX_START: start Rx aggregation |
| 1153 | * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1154 | * @IEEE80211_AMPDU_TX_START: start Tx aggregation |
| 1155 | * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation |
Sujith | 8469cde | 2008-10-29 10:19:28 +0530 | [diff] [blame] | 1156 | * @IEEE80211_AMPDU_TX_RESUME: resume TX aggregation |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1157 | */ |
| 1158 | enum ieee80211_ampdu_mlme_action { |
| 1159 | IEEE80211_AMPDU_RX_START, |
| 1160 | IEEE80211_AMPDU_RX_STOP, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1161 | IEEE80211_AMPDU_TX_START, |
| 1162 | IEEE80211_AMPDU_TX_STOP, |
Sujith | 8469cde | 2008-10-29 10:19:28 +0530 | [diff] [blame] | 1163 | IEEE80211_AMPDU_TX_RESUME, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1164 | }; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1165 | |
| 1166 | /** |
| 1167 | * struct ieee80211_ops - callbacks from mac80211 to the driver |
| 1168 | * |
| 1169 | * This structure contains various callbacks that the driver may |
| 1170 | * handle or, in some cases, must handle, for example to configure |
| 1171 | * the hardware to a new channel or to transmit a frame. |
| 1172 | * |
| 1173 | * @tx: Handler that 802.11 module calls for each transmitted frame. |
| 1174 | * skb contains the buffer starting from the IEEE 802.11 header. |
| 1175 | * The low-level driver should send the frame out based on |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1176 | * configuration in the TX control data. This handler should, |
| 1177 | * preferably, never fail and stop queues appropriately, more |
| 1178 | * importantly, however, it must never fail for A-MPDU-queues. |
| 1179 | * Must be implemented and atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1180 | * |
| 1181 | * @start: Called before the first netdevice attached to the hardware |
| 1182 | * is enabled. This should turn on the hardware and must turn on |
| 1183 | * frame reception (for possibly enabled monitor interfaces.) |
| 1184 | * Returns negative error codes, these may be seen in userspace, |
| 1185 | * or zero. |
| 1186 | * When the device is started it should not have a MAC address |
| 1187 | * to avoid acknowledging frames before a non-monitor device |
| 1188 | * is added. |
| 1189 | * Must be implemented. |
| 1190 | * |
| 1191 | * @stop: Called after last netdevice attached to the hardware |
| 1192 | * is disabled. This should turn off the hardware (at least |
| 1193 | * it must turn off frame reception.) |
| 1194 | * May be called right after add_interface if that rejects |
| 1195 | * an interface. |
| 1196 | * Must be implemented. |
| 1197 | * |
| 1198 | * @add_interface: Called when a netdevice attached to the hardware is |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1199 | * enabled. Because it is not called for monitor mode devices, @start |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1200 | * and @stop must be implemented. |
| 1201 | * The driver should perform any initialization it needs before |
| 1202 | * the device can be enabled. The initial configuration for the |
| 1203 | * interface is given in the conf parameter. |
| 1204 | * The callback may refuse to add an interface by returning a |
| 1205 | * negative error code (which will be seen in userspace.) |
| 1206 | * Must be implemented. |
| 1207 | * |
| 1208 | * @remove_interface: Notifies a driver that an interface is going down. |
| 1209 | * The @stop callback is called after this if it is the last interface |
| 1210 | * and no monitor interfaces are present. |
| 1211 | * When all interfaces are removed, the MAC address in the hardware |
| 1212 | * must be cleared so the device no longer acknowledges packets, |
| 1213 | * the mac_addr member of the conf structure is, however, set to the |
| 1214 | * MAC address of the device going away. |
| 1215 | * Hence, this callback must be implemented. |
| 1216 | * |
| 1217 | * @config: Handler for configuration requests. IEEE 802.11 code calls this |
| 1218 | * function to change hardware configuration, e.g., channel. |
| 1219 | * |
| 1220 | * @config_interface: Handler for configuration requests related to interfaces |
| 1221 | * (e.g. BSSID changes.) |
| 1222 | * |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1223 | * @bss_info_changed: Handler for configuration requests related to BSS |
| 1224 | * parameters that may vary during BSS's lifespan, and may affect low |
| 1225 | * level driver (e.g. assoc/disassoc status, erp parameters). |
| 1226 | * This function should not be used if no BSS has been set, unless |
| 1227 | * for association indication. The @changed parameter indicates which |
Reinette Chatre | d18ef29 | 2008-04-09 16:56:15 -0700 | [diff] [blame] | 1228 | * of the bss parameters has changed when a call is made. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1229 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1230 | * @configure_filter: Configure the device's RX filter. |
| 1231 | * See the section "Frame filtering" for more information. |
| 1232 | * This callback must be implemented and atomic. |
| 1233 | * |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 1234 | * @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] | 1235 | * must be set or cleared for a given STA. Must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1236 | * |
| 1237 | * @set_key: See the section "Hardware crypto acceleration" |
| 1238 | * This callback can sleep, and is only called between add_interface |
| 1239 | * and remove_interface calls, i.e. while the interface with the |
| 1240 | * given local_address is enabled. |
| 1241 | * |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1242 | * @update_tkip_key: See the section "Hardware crypto acceleration" |
| 1243 | * This callback will be called in the context of Rx. Called for drivers |
| 1244 | * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. |
| 1245 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1246 | * @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] | 1247 | * the scan state machine in stack. The scan must honour the channel |
| 1248 | * configuration done by the regulatory agent in the wiphy's registered |
Johannes Berg | 5bc7572 | 2008-09-11 00:01:51 +0200 | [diff] [blame] | 1249 | * bands. When the scan finishes, ieee80211_scan_completed() must be |
| 1250 | * called; note that it also must be called when the scan cannot finish |
| 1251 | * because the hardware is turned off! Anything else is a bug! |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1252 | * |
| 1253 | * @get_stats: return low-level statistics |
| 1254 | * |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1255 | * @get_tkip_seq: If your device implements TKIP encryption in hardware this |
| 1256 | * callback should be provided to read the TKIP transmit IVs (both IV32 |
| 1257 | * and IV16) for the given key from hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1258 | * |
| 1259 | * @set_rts_threshold: Configuration of RTS threshold (if device needs it) |
| 1260 | * |
| 1261 | * @set_frag_threshold: Configuration of fragmentation threshold. Assign this if |
| 1262 | * the device does fragmentation by itself; if this method is assigned then |
| 1263 | * the stack will not do fragmentation. |
| 1264 | * |
Johannes Berg | 7ba1c04 | 2008-12-08 11:18:32 +0100 | [diff] [blame] | 1265 | * @sta_notify: Notifies low level driver about addition or removal of an |
| 1266 | * associated station, AP, IBSS/WDS/mesh peer etc. Must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1267 | * |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 1268 | * @sta_ps_notify: Notifies low level driver about the power state transition |
| 1269 | * of a associated station. Must be atomic. |
| 1270 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1271 | * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 1272 | * bursting) for a hardware TX queue. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1273 | * |
| 1274 | * @get_tx_stats: Get statistics of the current TX queue status. This is used |
| 1275 | * to get number of currently queued packets (queue length), maximum queue |
| 1276 | * size (limit), and total number of packets sent using each TX queue |
Johannes Berg | 57ffc58 | 2008-04-29 17:18:59 +0200 | [diff] [blame] | 1277 | * (count). The 'stats' pointer points to an array that has hw->queues + |
| 1278 | * hw->ampdu_queues items. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1279 | * |
| 1280 | * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, |
| 1281 | * this is only used for IBSS mode debugging and, as such, is not a |
| 1282 | * required function. Must be atomic. |
| 1283 | * |
| 1284 | * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize |
| 1285 | * with other STAs in the IBSS. This is only used in IBSS mode. This |
| 1286 | * function is optional if the firmware/hardware takes full care of |
| 1287 | * TSF synchronization. |
| 1288 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1289 | * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. |
| 1290 | * This is needed only for IBSS mode and the result of this function is |
| 1291 | * used to determine whether to reply to Probe Requests. |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1292 | * |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1293 | * @ampdu_action: Perform a certain A-MPDU action |
| 1294 | * The RA/TID combination determines the destination and TID we want |
| 1295 | * the ampdu action to be performed for. The action is defined through |
| 1296 | * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1297 | * is the first frame we expect to perform the action on. notice |
| 1298 | * that TX/RX_STOP can pass NULL for this parameter. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1299 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1300 | struct ieee80211_ops { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1301 | int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1302 | int (*start)(struct ieee80211_hw *hw); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1303 | void (*stop)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1304 | int (*add_interface)(struct ieee80211_hw *hw, |
| 1305 | struct ieee80211_if_init_conf *conf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1306 | void (*remove_interface)(struct ieee80211_hw *hw, |
| 1307 | struct ieee80211_if_init_conf *conf); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1308 | int (*config)(struct ieee80211_hw *hw, u32 changed); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1309 | int (*config_interface)(struct ieee80211_hw *hw, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1310 | struct ieee80211_vif *vif, |
| 1311 | struct ieee80211_if_conf *conf); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1312 | void (*bss_info_changed)(struct ieee80211_hw *hw, |
| 1313 | struct ieee80211_vif *vif, |
| 1314 | struct ieee80211_bss_conf *info, |
| 1315 | u32 changed); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1316 | void (*configure_filter)(struct ieee80211_hw *hw, |
| 1317 | unsigned int changed_flags, |
| 1318 | unsigned int *total_flags, |
| 1319 | int mc_count, struct dev_addr_list *mc_list); |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1320 | int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
| 1321 | bool set); |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1322 | int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 1323 | const u8 *local_address, const u8 *address, |
| 1324 | struct ieee80211_key_conf *key); |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1325 | void (*update_tkip_key)(struct ieee80211_hw *hw, |
| 1326 | struct ieee80211_key_conf *conf, const u8 *address, |
| 1327 | u32 iv32, u16 *phase1key); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1328 | int (*hw_scan)(struct ieee80211_hw *hw, u8 *ssid, size_t len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1329 | int (*get_stats)(struct ieee80211_hw *hw, |
| 1330 | struct ieee80211_low_level_stats *stats); |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1331 | void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, |
| 1332 | u32 *iv32, u16 *iv16); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1333 | int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1334 | int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1335 | void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1336 | enum sta_notify_cmd, struct ieee80211_sta *sta); |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 1337 | void (*sta_notify_ps)(struct ieee80211_hw *hw, |
| 1338 | enum sta_notify_ps_cmd, struct ieee80211_sta *sta); |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1339 | int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1340 | const struct ieee80211_tx_queue_params *params); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1341 | int (*get_tx_stats)(struct ieee80211_hw *hw, |
| 1342 | struct ieee80211_tx_queue_stats *stats); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1343 | u64 (*get_tsf)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1344 | void (*reset_tsf)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1345 | int (*tx_last_beacon)(struct ieee80211_hw *hw); |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1346 | int (*ampdu_action)(struct ieee80211_hw *hw, |
| 1347 | enum ieee80211_ampdu_mlme_action action, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1348 | struct ieee80211_sta *sta, u16 tid, u16 *ssn); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1349 | }; |
| 1350 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1351 | /** |
| 1352 | * ieee80211_alloc_hw - Allocate a new hardware device |
| 1353 | * |
| 1354 | * This must be called once for each hardware device. The returned pointer |
| 1355 | * must be used to refer to this device when calling other functions. |
| 1356 | * mac80211 allocates a private data area for the driver pointed to by |
| 1357 | * @priv in &struct ieee80211_hw, the size of this area is given as |
| 1358 | * @priv_data_len. |
| 1359 | * |
| 1360 | * @priv_data_len: length of private data |
| 1361 | * @ops: callbacks for this device |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1362 | */ |
| 1363 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 1364 | const struct ieee80211_ops *ops); |
| 1365 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1366 | /** |
| 1367 | * ieee80211_register_hw - Register hardware device |
| 1368 | * |
Johannes Berg | dbbea67 | 2008-02-26 14:34:06 +0100 | [diff] [blame] | 1369 | * You must call this function before any other functions in |
| 1370 | * mac80211. Note that before a hardware can be registered, you |
| 1371 | * need to fill the contained wiphy's information. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1372 | * |
| 1373 | * @hw: the device to register as returned by ieee80211_alloc_hw() |
| 1374 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1375 | int ieee80211_register_hw(struct ieee80211_hw *hw); |
| 1376 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1377 | #ifdef CONFIG_MAC80211_LEDS |
| 1378 | extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); |
| 1379 | extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1380 | extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1381 | extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1382 | #endif |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1383 | /** |
| 1384 | * ieee80211_get_tx_led_name - get name of TX LED |
| 1385 | * |
| 1386 | * mac80211 creates a transmit LED trigger for each wireless hardware |
| 1387 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1388 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1389 | * of the trigger so you can automatically link the LED device. |
| 1390 | * |
| 1391 | * @hw: the hardware to get the LED trigger name for |
| 1392 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1393 | static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
| 1394 | { |
| 1395 | #ifdef CONFIG_MAC80211_LEDS |
| 1396 | return __ieee80211_get_tx_led_name(hw); |
| 1397 | #else |
| 1398 | return NULL; |
| 1399 | #endif |
| 1400 | } |
| 1401 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1402 | /** |
| 1403 | * ieee80211_get_rx_led_name - get name of RX LED |
| 1404 | * |
| 1405 | * mac80211 creates a receive LED trigger for each wireless hardware |
| 1406 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1407 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1408 | * of the trigger so you can automatically link the LED device. |
| 1409 | * |
| 1410 | * @hw: the hardware to get the LED trigger name for |
| 1411 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1412 | static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
| 1413 | { |
| 1414 | #ifdef CONFIG_MAC80211_LEDS |
| 1415 | return __ieee80211_get_rx_led_name(hw); |
| 1416 | #else |
| 1417 | return NULL; |
| 1418 | #endif |
| 1419 | } |
| 1420 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1421 | /** |
| 1422 | * ieee80211_get_assoc_led_name - get name of association LED |
| 1423 | * |
| 1424 | * mac80211 creates a association LED trigger for each wireless hardware |
| 1425 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1426 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1427 | * of the trigger so you can automatically link the LED device. |
| 1428 | * |
| 1429 | * @hw: the hardware to get the LED trigger name for |
| 1430 | */ |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1431 | static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
| 1432 | { |
| 1433 | #ifdef CONFIG_MAC80211_LEDS |
| 1434 | return __ieee80211_get_assoc_led_name(hw); |
| 1435 | #else |
| 1436 | return NULL; |
| 1437 | #endif |
| 1438 | } |
| 1439 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1440 | /** |
| 1441 | * ieee80211_get_radio_led_name - get name of radio LED |
| 1442 | * |
| 1443 | * mac80211 creates a radio change LED trigger for each wireless hardware |
| 1444 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1445 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1446 | * of the trigger so you can automatically link the LED device. |
| 1447 | * |
| 1448 | * @hw: the hardware to get the LED trigger name for |
| 1449 | */ |
| 1450 | static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) |
| 1451 | { |
| 1452 | #ifdef CONFIG_MAC80211_LEDS |
| 1453 | return __ieee80211_get_radio_led_name(hw); |
| 1454 | #else |
| 1455 | return NULL; |
| 1456 | #endif |
| 1457 | } |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1458 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1459 | /** |
| 1460 | * ieee80211_unregister_hw - Unregister a hardware device |
| 1461 | * |
| 1462 | * This function instructs mac80211 to free allocated resources |
| 1463 | * and unregister netdevices from the networking subsystem. |
| 1464 | * |
| 1465 | * @hw: the hardware to unregister |
| 1466 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1467 | void ieee80211_unregister_hw(struct ieee80211_hw *hw); |
| 1468 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1469 | /** |
| 1470 | * ieee80211_free_hw - free hardware descriptor |
| 1471 | * |
| 1472 | * This function frees everything that was allocated, including the |
| 1473 | * private data for the driver. You must call ieee80211_unregister_hw() |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1474 | * before calling this function. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1475 | * |
| 1476 | * @hw: the hardware to free |
| 1477 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1478 | void ieee80211_free_hw(struct ieee80211_hw *hw); |
| 1479 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1480 | /* trick to avoid symbol clashes with the ieee80211 subsystem */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1481 | void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 1482 | struct ieee80211_rx_status *status); |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1483 | |
| 1484 | /** |
| 1485 | * ieee80211_rx - receive frame |
| 1486 | * |
| 1487 | * Use this function to hand received frames to mac80211. The receive |
| 1488 | * buffer in @skb must start with an IEEE 802.11 header or a radiotap |
| 1489 | * header if %RX_FLAG_RADIOTAP is set in the @status flags. |
| 1490 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1491 | * This function may not be called in IRQ context. Calls to this function |
| 1492 | * for a single hardware must be synchronized against each other. Calls |
| 1493 | * to this function and ieee80211_rx_irqsafe() may not be mixed for a |
| 1494 | * single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1495 | * |
| 1496 | * @hw: the hardware this frame came in on |
| 1497 | * @skb: the buffer to receive, owned by mac80211 after this call |
| 1498 | * @status: status of this frame; the status pointer need not be valid |
| 1499 | * after this function returns |
| 1500 | */ |
| 1501 | static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 1502 | struct ieee80211_rx_status *status) |
| 1503 | { |
| 1504 | __ieee80211_rx(hw, skb, status); |
| 1505 | } |
| 1506 | |
| 1507 | /** |
| 1508 | * ieee80211_rx_irqsafe - receive frame |
| 1509 | * |
| 1510 | * Like ieee80211_rx() but can be called in IRQ context |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1511 | * (internally defers to a tasklet.) |
| 1512 | * |
| 1513 | * Calls to this function and ieee80211_rx() may not be mixed for a |
| 1514 | * single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1515 | * |
| 1516 | * @hw: the hardware this frame came in on |
| 1517 | * @skb: the buffer to receive, owned by mac80211 after this call |
| 1518 | * @status: status of this frame; the status pointer need not be valid |
| 1519 | * after this function returns and is not freed by mac80211, |
| 1520 | * it is recommended that it points to a stack area |
| 1521 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1522 | void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, |
| 1523 | struct sk_buff *skb, |
| 1524 | struct ieee80211_rx_status *status); |
| 1525 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1526 | /** |
| 1527 | * ieee80211_tx_status - transmit status callback |
| 1528 | * |
| 1529 | * Call this function for all transmitted frames after they have been |
| 1530 | * transmitted. It is permissible to not call this function for |
| 1531 | * multicast frames but this can affect statistics. |
| 1532 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1533 | * This function may not be called in IRQ context. Calls to this function |
| 1534 | * for a single hardware must be synchronized against each other. Calls |
| 1535 | * to this function and ieee80211_tx_status_irqsafe() may not be mixed |
| 1536 | * for a single hardware. |
| 1537 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1538 | * @hw: the hardware the frame was transmitted by |
| 1539 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1540 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1541 | void ieee80211_tx_status(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1542 | struct sk_buff *skb); |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1543 | |
| 1544 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1545 | * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1546 | * |
| 1547 | * Like ieee80211_tx_status() but can be called in IRQ context |
| 1548 | * (internally defers to a tasklet.) |
| 1549 | * |
| 1550 | * Calls to this function and ieee80211_tx_status() may not be mixed for a |
| 1551 | * single hardware. |
| 1552 | * |
| 1553 | * @hw: the hardware the frame was transmitted by |
| 1554 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1555 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1556 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1557 | struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1558 | |
| 1559 | /** |
| 1560 | * ieee80211_beacon_get - beacon generation function |
| 1561 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1562 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1563 | * |
| 1564 | * If the beacon frames are generated by the host system (i.e., not in |
| 1565 | * hardware/firmware), the low-level driver uses this function to receive |
| 1566 | * the next beacon frame from the 802.11 code. The low-level is responsible |
| 1567 | * for calling this function before beacon data is needed (e.g., based on |
| 1568 | * hardware interrupt). Returned skb is used only once and low-level driver |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1569 | * is responsible for freeing it. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1570 | */ |
| 1571 | struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1572 | struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1573 | |
| 1574 | /** |
| 1575 | * ieee80211_rts_get - RTS frame generation function |
| 1576 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1577 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1578 | * @frame: pointer to the frame that is going to be protected by the RTS. |
| 1579 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1580 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1581 | * @rts: The buffer where to store the RTS frame. |
| 1582 | * |
| 1583 | * If the RTS frames are generated by the host system (i.e., not in |
| 1584 | * hardware/firmware), the low-level driver uses this function to receive |
| 1585 | * the next RTS frame from the 802.11 code. The low-level is responsible |
| 1586 | * for calling this function before and RTS frame is needed. |
| 1587 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1588 | void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1589 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1590 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1591 | struct ieee80211_rts *rts); |
| 1592 | |
| 1593 | /** |
| 1594 | * ieee80211_rts_duration - Get the duration field for an RTS frame |
| 1595 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1596 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1597 | * @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] | 1598 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1599 | * |
| 1600 | * If the RTS is generated in firmware, but the host system must provide |
| 1601 | * the duration field, the low-level driver uses this function to receive |
| 1602 | * the duration field value in little-endian byteorder. |
| 1603 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1604 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 1605 | struct ieee80211_vif *vif, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1606 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1607 | |
| 1608 | /** |
| 1609 | * ieee80211_ctstoself_get - CTS-to-self frame generation function |
| 1610 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1611 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1612 | * @frame: pointer to the frame that is going to be protected by the CTS-to-self. |
| 1613 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1614 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1615 | * @cts: The buffer where to store the CTS-to-self frame. |
| 1616 | * |
| 1617 | * If the CTS-to-self frames are generated by the host system (i.e., not in |
| 1618 | * hardware/firmware), the low-level driver uses this function to receive |
| 1619 | * the next CTS-to-self frame from the 802.11 code. The low-level is responsible |
| 1620 | * for calling this function before and CTS-to-self frame is needed. |
| 1621 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1622 | void ieee80211_ctstoself_get(struct ieee80211_hw *hw, |
| 1623 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1624 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1625 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1626 | struct ieee80211_cts *cts); |
| 1627 | |
| 1628 | /** |
| 1629 | * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame |
| 1630 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1631 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1632 | * @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] | 1633 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1634 | * |
| 1635 | * If the CTS-to-self is generated in firmware, but the host system must provide |
| 1636 | * the duration field, the low-level driver uses this function to receive |
| 1637 | * the duration field value in little-endian byteorder. |
| 1638 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1639 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 1640 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1641 | size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1642 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1643 | |
| 1644 | /** |
| 1645 | * ieee80211_generic_frame_duration - Calculate the duration field for a frame |
| 1646 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1647 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1648 | * @frame_len: the length of the frame. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1649 | * @rate: the rate at which the frame is going to be transmitted. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1650 | * |
| 1651 | * Calculate the duration field of some generic frame, given its |
| 1652 | * length and transmission rate (in 100kbps). |
| 1653 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1654 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 1655 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1656 | size_t frame_len, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1657 | struct ieee80211_rate *rate); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1658 | |
| 1659 | /** |
| 1660 | * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames |
| 1661 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1662 | * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1663 | * |
| 1664 | * Function for accessing buffered broadcast and multicast frames. If |
| 1665 | * hardware/firmware does not implement buffering of broadcast/multicast |
| 1666 | * frames when power saving is used, 802.11 code buffers them in the host |
| 1667 | * memory. The low-level driver uses this function to fetch next buffered |
| 1668 | * frame. In most cases, this is used when generating beacon frame. This |
| 1669 | * function returns a pointer to the next buffered skb or NULL if no more |
| 1670 | * buffered frames are available. |
| 1671 | * |
| 1672 | * Note: buffered frames are returned only after DTIM beacon frame was |
| 1673 | * generated with ieee80211_beacon_get() and the low-level driver must thus |
| 1674 | * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns |
| 1675 | * NULL if the previous generated beacon was not DTIM, so the low-level driver |
| 1676 | * does not need to check for DTIM beacons separately and should be able to |
| 1677 | * use common code for all beacons. |
| 1678 | */ |
| 1679 | struct sk_buff * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1680 | ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1681 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1682 | /** |
| 1683 | * ieee80211_get_hdrlen_from_skb - get header length from data |
| 1684 | * |
| 1685 | * Given an skb with a raw 802.11 header at the data pointer this function |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1686 | * returns the 802.11 header length in bytes (not including encryption |
| 1687 | * headers). If the data in the sk_buff is too short to contain a valid 802.11 |
| 1688 | * header the function returns 0. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1689 | * |
| 1690 | * @skb: the frame |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1691 | */ |
Harvey Harrison | c9c6950 | 2008-06-11 14:21:57 -0700 | [diff] [blame] | 1692 | unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1693 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1694 | /** |
Harvey Harrison | 6693be7 | 2008-06-11 14:21:57 -0700 | [diff] [blame] | 1695 | * ieee80211_hdrlen - get header length in bytes from frame control |
| 1696 | * @fc: frame control field in little-endian format |
| 1697 | */ |
| 1698 | unsigned int ieee80211_hdrlen(__le16 fc); |
| 1699 | |
| 1700 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 1701 | * ieee80211_get_tkip_key - get a TKIP rc4 for skb |
| 1702 | * |
| 1703 | * This function computes a TKIP rc4 key for an skb. It computes |
| 1704 | * a phase 1 key if needed (iv16 wraps around). This function is to |
| 1705 | * be used by drivers which can do HW encryption but need to compute |
| 1706 | * to phase 1/2 key in SW. |
| 1707 | * |
| 1708 | * @keyconf: the parameter passed with the set key |
| 1709 | * @skb: the skb for which the key is needed |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1710 | * @type: TBD |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 1711 | * @key: a buffer to which the key will be written |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 1712 | */ |
| 1713 | void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, |
| 1714 | struct sk_buff *skb, |
| 1715 | enum ieee80211_tkip_key_type type, u8 *key); |
| 1716 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1717 | * ieee80211_wake_queue - wake specific queue |
| 1718 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1719 | * @queue: queue number (counted from zero). |
| 1720 | * |
| 1721 | * Drivers should use this function instead of netif_wake_queue. |
| 1722 | */ |
| 1723 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); |
| 1724 | |
| 1725 | /** |
| 1726 | * ieee80211_stop_queue - stop specific queue |
| 1727 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1728 | * @queue: queue number (counted from zero). |
| 1729 | * |
| 1730 | * Drivers should use this function instead of netif_stop_queue. |
| 1731 | */ |
| 1732 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); |
| 1733 | |
| 1734 | /** |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 1735 | * ieee80211_queue_stopped - test status of the queue |
| 1736 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1737 | * @queue: queue number (counted from zero). |
| 1738 | * |
| 1739 | * Drivers should use this function instead of netif_stop_queue. |
| 1740 | */ |
| 1741 | |
| 1742 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); |
| 1743 | |
| 1744 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1745 | * ieee80211_stop_queues - stop all queues |
| 1746 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1747 | * |
| 1748 | * Drivers should use this function instead of netif_stop_queue. |
| 1749 | */ |
| 1750 | void ieee80211_stop_queues(struct ieee80211_hw *hw); |
| 1751 | |
| 1752 | /** |
| 1753 | * ieee80211_wake_queues - wake all queues |
| 1754 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1755 | * |
| 1756 | * Drivers should use this function instead of netif_wake_queue. |
| 1757 | */ |
| 1758 | void ieee80211_wake_queues(struct ieee80211_hw *hw); |
| 1759 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1760 | /** |
| 1761 | * ieee80211_scan_completed - completed hardware scan |
| 1762 | * |
| 1763 | * When hardware scan offload is used (i.e. the hw_scan() callback is |
| 1764 | * assigned) this function needs to be called by the driver to notify |
| 1765 | * mac80211 that the scan finished. |
| 1766 | * |
| 1767 | * @hw: the hardware that finished the scan |
| 1768 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1769 | void ieee80211_scan_completed(struct ieee80211_hw *hw); |
| 1770 | |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1771 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1772 | * ieee80211_iterate_active_interfaces - iterate active interfaces |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1773 | * |
| 1774 | * This function iterates over the interfaces associated with a given |
| 1775 | * hardware that are currently active and calls the callback for them. |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 1776 | * This function allows the iterator function to sleep, when the iterator |
| 1777 | * function is atomic @ieee80211_iterate_active_interfaces_atomic can |
| 1778 | * be used. |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1779 | * |
| 1780 | * @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] | 1781 | * @iterator: the iterator function to call |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1782 | * @data: first argument of the iterator function |
| 1783 | */ |
| 1784 | void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, |
| 1785 | void (*iterator)(void *data, u8 *mac, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1786 | struct ieee80211_vif *vif), |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 1787 | void *data); |
| 1788 | |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1789 | /** |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 1790 | * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces |
| 1791 | * |
| 1792 | * This function iterates over the interfaces associated with a given |
| 1793 | * hardware that are currently active and calls the callback for them. |
| 1794 | * This function requires the iterator callback function to be atomic, |
| 1795 | * if that is not desired, use @ieee80211_iterate_active_interfaces instead. |
| 1796 | * |
| 1797 | * @hw: the hardware struct of which the interfaces should be iterated over |
| 1798 | * @iterator: the iterator function to call, cannot sleep |
| 1799 | * @data: first argument of the iterator function |
| 1800 | */ |
| 1801 | void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, |
| 1802 | void (*iterator)(void *data, |
| 1803 | u8 *mac, |
| 1804 | struct ieee80211_vif *vif), |
| 1805 | void *data); |
| 1806 | |
| 1807 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1808 | * ieee80211_start_tx_ba_session - Start a tx Block Ack session. |
| 1809 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1810 | * @ra: receiver address of the BA session recipient |
| 1811 | * @tid: the TID to BA on. |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 1812 | * |
| 1813 | * Return: success if addBA request was sent, failure otherwise |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1814 | * |
| 1815 | * Although mac80211/low level driver/user space application can estimate |
| 1816 | * the need to start aggregation on a certain RA/TID, the session level |
| 1817 | * will be managed by the mac80211. |
| 1818 | */ |
| 1819 | int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid); |
| 1820 | |
| 1821 | /** |
| 1822 | * ieee80211_start_tx_ba_cb - low level driver ready to aggregate. |
| 1823 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1824 | * @ra: receiver address of the BA session recipient. |
| 1825 | * @tid: the TID to BA on. |
| 1826 | * |
| 1827 | * This function must be called by low level driver once it has |
| 1828 | * finished with preparations for the BA session. |
| 1829 | */ |
| 1830 | void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid); |
| 1831 | |
| 1832 | /** |
| 1833 | * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. |
| 1834 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1835 | * @ra: receiver address of the BA session recipient. |
| 1836 | * @tid: the TID to BA on. |
| 1837 | * |
| 1838 | * This function must be called by low level driver once it has |
| 1839 | * finished with preparations for the BA session. |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1840 | * This version of the function is IRQ-safe. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1841 | */ |
| 1842 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, |
| 1843 | u16 tid); |
| 1844 | |
| 1845 | /** |
| 1846 | * ieee80211_stop_tx_ba_session - Stop a Block Ack session. |
| 1847 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1848 | * @ra: receiver address of the BA session recipient |
| 1849 | * @tid: the TID to stop BA. |
| 1850 | * @initiator: if indicates initiator DELBA frame will be sent. |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 1851 | * |
| 1852 | * Return: error if no sta with matching da found, success otherwise |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1853 | * |
| 1854 | * Although mac80211/low level driver/user space application can estimate |
| 1855 | * the need to stop aggregation on a certain RA/TID, the session level |
| 1856 | * will be managed by the mac80211. |
| 1857 | */ |
| 1858 | int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw, |
| 1859 | u8 *ra, u16 tid, |
| 1860 | enum ieee80211_back_parties initiator); |
| 1861 | |
| 1862 | /** |
| 1863 | * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate. |
| 1864 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1865 | * @ra: receiver address of the BA session recipient. |
| 1866 | * @tid: the desired TID to BA on. |
| 1867 | * |
| 1868 | * This function must be called by low level driver once it has |
| 1869 | * finished with preparations for the BA session tear down. |
| 1870 | */ |
| 1871 | void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid); |
| 1872 | |
| 1873 | /** |
| 1874 | * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. |
| 1875 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 1876 | * @ra: receiver address of the BA session recipient. |
| 1877 | * @tid: the desired TID to BA on. |
| 1878 | * |
| 1879 | * This function must be called by low level driver once it has |
| 1880 | * finished with preparations for the BA session tear down. |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1881 | * This version of the function is IRQ-safe. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1882 | */ |
| 1883 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra, |
| 1884 | u16 tid); |
| 1885 | |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 1886 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1887 | * ieee80211_find_sta - find a station |
| 1888 | * |
| 1889 | * @hw: pointer as obtained from ieee80211_alloc_hw() |
| 1890 | * @addr: station's address |
| 1891 | * |
| 1892 | * This function must be called under RCU lock and the |
| 1893 | * resulting pointer is only valid under RCU lock as well. |
| 1894 | */ |
| 1895 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw, |
| 1896 | const u8 *addr); |
| 1897 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1898 | |
| 1899 | /* Rate control API */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1900 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1901 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1902 | * struct ieee80211_tx_rate_control - rate control information for/from RC algo |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1903 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1904 | * @hw: The hardware the algorithm is invoked for. |
| 1905 | * @sband: The band this frame is being transmitted on. |
| 1906 | * @bss_conf: the current BSS configuration |
| 1907 | * @reported_rate: The rate control algorithm can fill this in to indicate |
| 1908 | * which rate should be reported to userspace as the current rate and |
| 1909 | * used for rate calculations in the mesh network. |
| 1910 | * @rts: whether RTS will be used for this frame because it is longer than the |
| 1911 | * RTS threshold |
| 1912 | * @short_preamble: whether mac80211 will request short-preamble transmission |
| 1913 | * if the selected rate supports it |
| 1914 | * @max_rate_idx: user-requested maximum rate (not MCS for now) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 1915 | * @skb: the skb that will be transmitted, the control information in it needs |
| 1916 | * to be filled in |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1917 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1918 | struct ieee80211_tx_rate_control { |
| 1919 | struct ieee80211_hw *hw; |
| 1920 | struct ieee80211_supported_band *sband; |
| 1921 | struct ieee80211_bss_conf *bss_conf; |
| 1922 | struct sk_buff *skb; |
| 1923 | struct ieee80211_tx_rate reported_rate; |
| 1924 | bool rts, short_preamble; |
| 1925 | u8 max_rate_idx; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1926 | }; |
| 1927 | |
| 1928 | struct rate_control_ops { |
| 1929 | struct module *module; |
| 1930 | const char *name; |
| 1931 | void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1932 | void (*free)(void *priv); |
| 1933 | |
| 1934 | void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); |
| 1935 | void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, |
| 1936 | struct ieee80211_sta *sta, void *priv_sta); |
| 1937 | void (*free_sta)(void *priv, struct ieee80211_sta *sta, |
| 1938 | void *priv_sta); |
| 1939 | |
| 1940 | void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, |
| 1941 | struct ieee80211_sta *sta, void *priv_sta, |
| 1942 | struct sk_buff *skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1943 | void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, |
| 1944 | struct ieee80211_tx_rate_control *txrc); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 1945 | |
| 1946 | void (*add_sta_debugfs)(void *priv, void *priv_sta, |
| 1947 | struct dentry *dir); |
| 1948 | void (*remove_sta_debugfs)(void *priv, void *priv_sta); |
| 1949 | }; |
| 1950 | |
| 1951 | static inline int rate_supported(struct ieee80211_sta *sta, |
| 1952 | enum ieee80211_band band, |
| 1953 | int index) |
| 1954 | { |
| 1955 | return (sta == NULL || sta->supp_rates[band] & BIT(index)); |
| 1956 | } |
| 1957 | |
| 1958 | static inline s8 |
| 1959 | rate_lowest_index(struct ieee80211_supported_band *sband, |
| 1960 | struct ieee80211_sta *sta) |
| 1961 | { |
| 1962 | int i; |
| 1963 | |
| 1964 | for (i = 0; i < sband->n_bitrates; i++) |
| 1965 | if (rate_supported(sta, sband->band, i)) |
| 1966 | return i; |
| 1967 | |
| 1968 | /* warn when we cannot find a rate. */ |
| 1969 | WARN_ON(1); |
| 1970 | |
| 1971 | return 0; |
| 1972 | } |
| 1973 | |
| 1974 | |
| 1975 | int ieee80211_rate_control_register(struct rate_control_ops *ops); |
| 1976 | void ieee80211_rate_control_unregister(struct rate_control_ops *ops); |
| 1977 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1978 | #endif /* MAC80211_H */ |