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> |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 6 | * Copyright 2007-2010 Johannes Berg <johannes@sipsolutions.net> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #ifndef MAC80211_H |
| 14 | #define MAC80211_H |
| 15 | |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/if_ether.h> |
| 18 | #include <linux/skbuff.h> |
| 19 | #include <linux/wireless.h> |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/ieee80211.h> |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 22 | #include <net/cfg80211.h> |
| 23 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 24 | /** |
| 25 | * DOC: Introduction |
| 26 | * |
| 27 | * mac80211 is the Linux stack for 802.11 hardware that implements |
| 28 | * only partial functionality in hard- or firmware. This document |
| 29 | * defines the interface between mac80211 and low-level hardware |
| 30 | * drivers. |
| 31 | */ |
| 32 | |
| 33 | /** |
| 34 | * DOC: Calling mac80211 from interrupts |
| 35 | * |
| 36 | * Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 37 | * called in hardware interrupt context. The low-level driver must not call any |
| 38 | * other functions in hardware interrupt context. If there is a need for such |
| 39 | * call, the low-level driver should first ACK the interrupt and perform the |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 40 | * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even |
| 41 | * tasklet function. |
| 42 | * |
| 43 | * NOTE: If the driver opts to use the _irqsafe() functions, it may not also |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 44 | * use the non-IRQ-safe functions! |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 45 | */ |
| 46 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 47 | /** |
| 48 | * DOC: Warning |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 49 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 50 | * If you're reading this document and not the header file itself, it will |
| 51 | * be incomplete because not all documentation has been converted yet. |
| 52 | */ |
| 53 | |
| 54 | /** |
| 55 | * DOC: Frame format |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 56 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 57 | * As a general rule, when frames are passed between mac80211 and the driver, |
| 58 | * they start with the IEEE 802.11 header and include the same octets that are |
| 59 | * sent over the air except for the FCS which should be calculated by the |
| 60 | * hardware. |
| 61 | * |
| 62 | * There are, however, various exceptions to this rule for advanced features: |
| 63 | * |
| 64 | * The first exception is for hardware encryption and decryption offload |
| 65 | * where the IV/ICV may or may not be generated in hardware. |
| 66 | * |
| 67 | * Secondly, when the hardware handles fragmentation, the frame handed to |
| 68 | * the driver from mac80211 is the MSDU, not the MPDU. |
| 69 | * |
| 70 | * Finally, for received frames, the driver is able to indicate that it has |
| 71 | * filled a radiotap header and put that in front of the frame; if it does |
| 72 | * not do so then mac80211 may add this under certain circumstances. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 73 | */ |
| 74 | |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 75 | /** |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 76 | * DOC: mac80211 workqueue |
| 77 | * |
| 78 | * mac80211 provides its own workqueue for drivers and internal mac80211 use. |
| 79 | * The workqueue is a single threaded workqueue and can only be accessed by |
| 80 | * helpers for sanity checking. Drivers must ensure all work added onto the |
| 81 | * mac80211 workqueue should be cancelled on the driver stop() callback. |
| 82 | * |
| 83 | * mac80211 will flushed the workqueue upon interface removal and during |
| 84 | * suspend. |
| 85 | * |
| 86 | * All work performed on the mac80211 workqueue must not acquire the RTNL lock. |
| 87 | * |
| 88 | */ |
| 89 | |
| 90 | /** |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 91 | * enum ieee80211_max_queues - maximum number of queues |
| 92 | * |
| 93 | * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 94 | */ |
| 95 | enum ieee80211_max_queues { |
Johannes Berg | 51b3814 | 2009-03-12 11:16:48 +0100 | [diff] [blame] | 96 | IEEE80211_MAX_QUEUES = 4, |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 97 | }; |
| 98 | |
| 99 | /** |
Johannes Berg | 4bce22b | 2010-11-16 11:49:58 -0800 | [diff] [blame] | 100 | * enum ieee80211_ac_numbers - AC numbers as used in mac80211 |
| 101 | * @IEEE80211_AC_VO: voice |
| 102 | * @IEEE80211_AC_VI: video |
| 103 | * @IEEE80211_AC_BE: best effort |
| 104 | * @IEEE80211_AC_BK: background |
| 105 | */ |
| 106 | enum ieee80211_ac_numbers { |
| 107 | IEEE80211_AC_VO = 0, |
| 108 | IEEE80211_AC_VI = 1, |
| 109 | IEEE80211_AC_BE = 2, |
| 110 | IEEE80211_AC_BK = 3, |
| 111 | }; |
| 112 | |
| 113 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 114 | * struct ieee80211_tx_queue_params - transmit queue configuration |
| 115 | * |
| 116 | * The information provided in this structure is required for QoS |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 117 | * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 118 | * |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 119 | * @aifs: arbitration interframe space [0..255] |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 120 | * @cw_min: minimum contention window [a value of the form |
| 121 | * 2^n-1 in the range 1..32767] |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 122 | * @cw_max: maximum contention window [like @cw_min] |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 123 | * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled |
Kalle Valo | 9d173fc | 2010-01-14 13:09:14 +0200 | [diff] [blame] | 124 | * @uapsd: is U-APSD mode enabled for the queue |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 125 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 126 | struct ieee80211_tx_queue_params { |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 127 | u16 txop; |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 128 | u16 cw_min; |
| 129 | u16 cw_max; |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 130 | u8 aifs; |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 131 | bool uapsd; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 132 | }; |
| 133 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 134 | struct ieee80211_low_level_stats { |
| 135 | unsigned int dot11ACKFailureCount; |
| 136 | unsigned int dot11RTSFailureCount; |
| 137 | unsigned int dot11FCSErrorCount; |
| 138 | unsigned int dot11RTSSuccessCount; |
| 139 | }; |
| 140 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 141 | /** |
| 142 | * enum ieee80211_bss_change - BSS change notification flags |
| 143 | * |
| 144 | * These flags are used with the bss_info_changed() callback |
| 145 | * to indicate which BSS parameter changed. |
| 146 | * |
| 147 | * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), |
| 148 | * also implies a change in the AID. |
| 149 | * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed |
| 150 | * @BSS_CHANGED_ERP_PREAMBLE: preamble changed |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 151 | * @BSS_CHANGED_ERP_SLOT: slot timing changed |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 152 | * @BSS_CHANGED_HT: 802.11n parameters changed |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 153 | * @BSS_CHANGED_BASIC_RATES: Basic rateset changed |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 154 | * @BSS_CHANGED_BEACON_INT: Beacon interval changed |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 155 | * @BSS_CHANGED_BSSID: BSSID changed, for whatever |
| 156 | * reason (IBSS and managed mode) |
| 157 | * @BSS_CHANGED_BEACON: Beacon data changed, retrieve |
| 158 | * new beacon (beaconing modes) |
| 159 | * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be |
| 160 | * enabled/disabled (beaconing modes) |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 161 | * @BSS_CHANGED_CQM: Connection quality monitor config changed |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 162 | * @BSS_CHANGED_IBSS: IBSS join status changed |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 163 | * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed. |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 164 | * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note |
| 165 | * that it is only ever disabled for station mode. |
Johannes Berg | 7da7cc1 | 2010-08-05 17:02:38 +0200 | [diff] [blame] | 166 | * @BSS_CHANGED_IDLE: Idle changed for this BSS/interface. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 167 | */ |
| 168 | enum ieee80211_bss_change { |
| 169 | BSS_CHANGED_ASSOC = 1<<0, |
| 170 | BSS_CHANGED_ERP_CTS_PROT = 1<<1, |
| 171 | BSS_CHANGED_ERP_PREAMBLE = 1<<2, |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 172 | BSS_CHANGED_ERP_SLOT = 1<<3, |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 173 | BSS_CHANGED_HT = 1<<4, |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 174 | BSS_CHANGED_BASIC_RATES = 1<<5, |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 175 | BSS_CHANGED_BEACON_INT = 1<<6, |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 176 | BSS_CHANGED_BSSID = 1<<7, |
| 177 | BSS_CHANGED_BEACON = 1<<8, |
| 178 | BSS_CHANGED_BEACON_ENABLED = 1<<9, |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 179 | BSS_CHANGED_CQM = 1<<10, |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 180 | BSS_CHANGED_IBSS = 1<<11, |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 181 | BSS_CHANGED_ARP_FILTER = 1<<12, |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 182 | BSS_CHANGED_QOS = 1<<13, |
Johannes Berg | 7da7cc1 | 2010-08-05 17:02:38 +0200 | [diff] [blame] | 183 | BSS_CHANGED_IDLE = 1<<14, |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 184 | |
| 185 | /* when adding here, make sure to change ieee80211_reconfig */ |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 186 | }; |
| 187 | |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 188 | /* |
| 189 | * The maximum number of IPv4 addresses listed for ARP filtering. If the number |
| 190 | * of addresses for an interface increase beyond this value, hardware ARP |
| 191 | * filtering will be disabled. |
| 192 | */ |
| 193 | #define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4 |
| 194 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 195 | /** |
| 196 | * struct ieee80211_bss_conf - holds the BSS's changing parameters |
| 197 | * |
| 198 | * This structure keeps information about a BSS (and an association |
| 199 | * to that BSS) that can change during the lifetime of the BSS. |
| 200 | * |
| 201 | * @assoc: association status |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 202 | * @ibss_joined: indicates whether this station is part of an IBSS |
| 203 | * or not |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 204 | * @aid: association ID number, valid only when @assoc is true |
| 205 | * @use_cts_prot: use CTS protection |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 206 | * @use_short_preamble: use 802.11b short preamble; |
| 207 | * if the hardware cannot handle this it must set the |
| 208 | * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag |
| 209 | * @use_short_slot: use short slot time (only relevant for ERP); |
| 210 | * if the hardware cannot handle this it must set the |
| 211 | * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag |
Johannes Berg | 56007a0 | 2010-01-26 14:19:52 +0100 | [diff] [blame] | 212 | * @dtim_period: num of beacons before the next DTIM, for beaconing, |
Johannes Berg | e5b900d | 2010-07-29 16:08:55 +0200 | [diff] [blame] | 213 | * valid in station mode only while @assoc is true and if also |
| 214 | * requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf |
| 215 | * @ps_dtim_period) |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 216 | * @timestamp: beacon timestamp |
| 217 | * @beacon_int: beacon interval |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 218 | * @assoc_capability: capabilities taken from assoc resp |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 219 | * @basic_rates: bitmap of basic rates, each bit stands for an |
| 220 | * index into the rate table configured by the driver in |
| 221 | * the current band. |
Felix Fietkau | dd5b4cc | 2010-11-22 20:58:24 +0100 | [diff] [blame] | 222 | * @mcast_rate: per-band multicast rate index + 1 (0: disabled) |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 223 | * @bssid: The BSSID for this BSS |
| 224 | * @enable_beacon: whether beaconing should be enabled or not |
Johannes Berg | 0aaffa9 | 2010-05-05 15:28:27 +0200 | [diff] [blame] | 225 | * @channel_type: Channel type for this BSS -- the hardware might be |
| 226 | * configured for HT40+ while this BSS only uses no-HT, for |
| 227 | * example. |
Johannes Berg | 9ed6bcc | 2009-05-08 20:47:39 +0200 | [diff] [blame] | 228 | * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info). |
| 229 | * This field is only valid when the channel type is one of the HT types. |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 230 | * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value |
| 231 | * implies disabled |
| 232 | * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 233 | * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The |
| 234 | * may filter ARP queries targeted for other addresses than listed here. |
| 235 | * The driver must allow ARP queries targeted for all address listed here |
| 236 | * to pass through. An empty list implies no ARP queries need to pass. |
| 237 | * @arp_addr_cnt: Number of addresses currently on the list. |
| 238 | * @arp_filter_enabled: Enable ARP filtering - if enabled, the hardware may |
| 239 | * filter ARP queries based on the @arp_addr_list, if disabled, the |
| 240 | * hardware must not perform any ARP filtering. Note, that the filter will |
| 241 | * be enabled also in promiscuous mode. |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 242 | * @qos: This is a QoS-enabled BSS. |
Johannes Berg | 7da7cc1 | 2010-08-05 17:02:38 +0200 | [diff] [blame] | 243 | * @idle: This interface is idle. There's also a global idle flag in the |
| 244 | * hardware config which may be more appropriate depending on what |
| 245 | * your driver/device needs to do. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 246 | */ |
| 247 | struct ieee80211_bss_conf { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 248 | const u8 *bssid; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 249 | /* association related data */ |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 250 | bool assoc, ibss_joined; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 251 | u16 aid; |
| 252 | /* erp related data */ |
| 253 | bool use_cts_prot; |
| 254 | bool use_short_preamble; |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 255 | bool use_short_slot; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 256 | bool enable_beacon; |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 257 | u8 dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 258 | u16 beacon_int; |
| 259 | u16 assoc_capability; |
| 260 | u64 timestamp; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 261 | u32 basic_rates; |
Felix Fietkau | dd5b4cc | 2010-11-22 20:58:24 +0100 | [diff] [blame] | 262 | int mcast_rate[IEEE80211_NUM_BANDS]; |
Johannes Berg | 9ed6bcc | 2009-05-08 20:47:39 +0200 | [diff] [blame] | 263 | u16 ht_operation_mode; |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 264 | s32 cqm_rssi_thold; |
| 265 | u32 cqm_rssi_hyst; |
Johannes Berg | 0aaffa9 | 2010-05-05 15:28:27 +0200 | [diff] [blame] | 266 | enum nl80211_channel_type channel_type; |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 267 | __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; |
| 268 | u8 arp_addr_cnt; |
| 269 | bool arp_filter_enabled; |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 270 | bool qos; |
Johannes Berg | 7da7cc1 | 2010-08-05 17:02:38 +0200 | [diff] [blame] | 271 | bool idle; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 272 | }; |
| 273 | |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 274 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 275 | * enum mac80211_tx_control_flags - flags to describe transmission information/status |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 276 | * |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 277 | * These flags are used with the @flags member of &ieee80211_tx_info. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 278 | * |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 279 | * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 280 | * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence |
| 281 | * number to this frame, taking care of not overwriting the fragment |
| 282 | * number and increasing the sequence number only when the |
| 283 | * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly |
| 284 | * assign sequence numbers to QoS-data frames but cannot do so correctly |
| 285 | * for non-QoS-data and management frames because beacons need them from |
| 286 | * that counter as well and mac80211 cannot guarantee proper sequencing. |
| 287 | * If this flag is set, the driver should instruct the hardware to |
| 288 | * assign a sequence number to the frame or assign one itself. Cf. IEEE |
| 289 | * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for |
| 290 | * beacons and always be clear for frames without a sequence number field. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 291 | * @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] | 292 | * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination |
| 293 | * station |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 294 | * @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] | 295 | * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon |
| 296 | * @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] | 297 | * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 298 | * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted |
Johannes Berg | ab5b534 | 2009-08-07 16:28:09 +0200 | [diff] [blame] | 299 | * because the destination STA was in powersave mode. Note that to |
| 300 | * avoid race conditions, the filter must be set by the hardware or |
| 301 | * firmware upon receiving a frame that indicates that the station |
| 302 | * went to sleep (must be done on device to filter frames already on |
| 303 | * the queue) and may only be unset after mac80211 gives the OK for |
| 304 | * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), |
| 305 | * since only then is it guaranteed that no more frames are in the |
| 306 | * hardware queue. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 307 | * @IEEE80211_TX_STAT_ACK: Frame was acknowledged |
| 308 | * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status |
| 309 | * is for the whole aggregation. |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 310 | * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, |
| 311 | * so consider using block ack request (BAR). |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 312 | * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be |
| 313 | * set by rate control algorithms to indicate probe rate, will |
| 314 | * be cleared for fragmented frames (except on the last fragment) |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 315 | * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, |
| 316 | * used to indicate that a pending frame requires TX processing before |
| 317 | * it can be sent out. |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 318 | * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, |
| 319 | * used to indicate that a frame was already retried due to PS |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 320 | * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, |
| 321 | * used to indicate frame should not be encrypted |
Johannes Berg | 3fa5205 | 2009-07-24 13:23:09 +0200 | [diff] [blame] | 322 | * @IEEE80211_TX_CTL_PSPOLL_RESPONSE: (internal?) |
| 323 | * This frame is a response to a PS-poll frame and should be sent |
| 324 | * although the station is in powersave mode. |
Johannes Berg | ad5351d | 2009-08-07 16:42:15 +0200 | [diff] [blame] | 325 | * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the |
| 326 | * transmit function after the current frame, this can be used |
| 327 | * by drivers to kick the DMA queue only if unset or when the |
| 328 | * queue gets full. |
Johannes Berg | c6fcf6b | 2010-01-17 01:47:59 +0100 | [diff] [blame] | 329 | * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted |
| 330 | * after TX status because the destination was asleep, it must not |
| 331 | * be modified again (no seqno assignment, crypto, etc.) |
Felix Fietkau | 17ad353 | 2010-01-31 21:56:25 +0100 | [diff] [blame] | 332 | * @IEEE80211_TX_INTFL_HAS_RADIOTAP: This frame was injected and still |
| 333 | * has a radiotap header at skb->data. |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 334 | * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211 |
| 335 | * MLME command (internal to mac80211 to figure out whether to send TX |
| 336 | * status to user space) |
Luis R. Rodriguez | 0a56bd0 | 2010-04-15 17:39:37 -0400 | [diff] [blame] | 337 | * @IEEE80211_TX_CTL_LDPC: tells the driver to use LDPC for this frame |
Felix Fietkau | f79d9ba | 2010-04-19 19:57:35 +0200 | [diff] [blame] | 338 | * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this |
| 339 | * frame and selects the maximum number of streams that it can use. |
Johannes Berg | 610dbc9 | 2011-01-06 22:36:44 +0100 | [diff] [blame] | 340 | * @IEEE80211_TX_CTL_TX_OFFCHAN: Marks this packet to be transmitted on |
| 341 | * the off-channel channel when a remain-on-channel offload is done |
| 342 | * in hardware -- normal packets still flow and are expected to be |
| 343 | * handled properly by the device. |
Jouni Malinen | 681d119 | 2011-02-03 18:35:19 +0200 | [diff] [blame] | 344 | * @IEEE80211_TX_INTFL_TKIP_MIC_FAILURE: Marks this packet to be used for TKIP |
| 345 | * testing. It will be sent out with incorrect Michael MIC key to allow |
| 346 | * TKIP countermeasures to be tested. |
Christian Lamparter | eb7d306 | 2010-09-21 21:36:18 +0200 | [diff] [blame] | 347 | * |
| 348 | * Note: If you have to add new flags to the enumeration, then don't |
| 349 | * forget to update %IEEE80211_TX_TEMPORARY_FLAGS when necessary. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 350 | */ |
| 351 | enum mac80211_tx_control_flags { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 352 | IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 353 | IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), |
| 354 | IEEE80211_TX_CTL_NO_ACK = BIT(2), |
| 355 | IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), |
| 356 | IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), |
| 357 | IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), |
| 358 | IEEE80211_TX_CTL_AMPDU = BIT(6), |
| 359 | IEEE80211_TX_CTL_INJECTED = BIT(7), |
| 360 | IEEE80211_TX_STAT_TX_FILTERED = BIT(8), |
| 361 | IEEE80211_TX_STAT_ACK = BIT(9), |
| 362 | IEEE80211_TX_STAT_AMPDU = BIT(10), |
| 363 | IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), |
| 364 | IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 365 | IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 366 | IEEE80211_TX_INTFL_RETRIED = BIT(15), |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 367 | IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), |
Johannes Berg | 3fa5205 | 2009-07-24 13:23:09 +0200 | [diff] [blame] | 368 | IEEE80211_TX_CTL_PSPOLL_RESPONSE = BIT(17), |
Johannes Berg | ad5351d | 2009-08-07 16:42:15 +0200 | [diff] [blame] | 369 | IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), |
Johannes Berg | c6fcf6b | 2010-01-17 01:47:59 +0100 | [diff] [blame] | 370 | IEEE80211_TX_INTFL_RETRANSMISSION = BIT(19), |
Felix Fietkau | 17ad353 | 2010-01-31 21:56:25 +0100 | [diff] [blame] | 371 | IEEE80211_TX_INTFL_HAS_RADIOTAP = BIT(20), |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 372 | IEEE80211_TX_INTFL_NL80211_FRAME_TX = BIT(21), |
Luis R. Rodriguez | 0a56bd0 | 2010-04-15 17:39:37 -0400 | [diff] [blame] | 373 | IEEE80211_TX_CTL_LDPC = BIT(22), |
Felix Fietkau | f79d9ba | 2010-04-19 19:57:35 +0200 | [diff] [blame] | 374 | IEEE80211_TX_CTL_STBC = BIT(23) | BIT(24), |
Johannes Berg | 21f8358 | 2010-12-18 17:20:47 +0100 | [diff] [blame] | 375 | IEEE80211_TX_CTL_TX_OFFCHAN = BIT(25), |
Jouni Malinen | 681d119 | 2011-02-03 18:35:19 +0200 | [diff] [blame] | 376 | IEEE80211_TX_INTFL_TKIP_MIC_FAILURE = BIT(26), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 377 | }; |
| 378 | |
Johannes Berg | abe37c4 | 2010-06-07 11:12:27 +0200 | [diff] [blame] | 379 | #define IEEE80211_TX_CTL_STBC_SHIFT 23 |
| 380 | |
Christian Lamparter | eb7d306 | 2010-09-21 21:36:18 +0200 | [diff] [blame] | 381 | /* |
| 382 | * This definition is used as a mask to clear all temporary flags, which are |
| 383 | * set by the tx handlers for each transmission attempt by the mac80211 stack. |
| 384 | */ |
| 385 | #define IEEE80211_TX_TEMPORARY_FLAGS (IEEE80211_TX_CTL_NO_ACK | \ |
| 386 | IEEE80211_TX_CTL_CLEAR_PS_FILT | IEEE80211_TX_CTL_FIRST_FRAGMENT | \ |
| 387 | IEEE80211_TX_CTL_SEND_AFTER_DTIM | IEEE80211_TX_CTL_AMPDU | \ |
| 388 | IEEE80211_TX_STAT_TX_FILTERED | IEEE80211_TX_STAT_ACK | \ |
| 389 | IEEE80211_TX_STAT_AMPDU | IEEE80211_TX_STAT_AMPDU_NO_BACK | \ |
| 390 | IEEE80211_TX_CTL_RATE_CTRL_PROBE | IEEE80211_TX_CTL_PSPOLL_RESPONSE | \ |
| 391 | IEEE80211_TX_CTL_MORE_FRAMES | IEEE80211_TX_CTL_LDPC | \ |
| 392 | IEEE80211_TX_CTL_STBC) |
| 393 | |
Sujith | 2134e7e | 2009-01-22 09:00:52 +0530 | [diff] [blame] | 394 | /** |
| 395 | * enum mac80211_rate_control_flags - per-rate flags set by the |
| 396 | * Rate Control algorithm. |
| 397 | * |
| 398 | * These flags are set by the Rate control algorithm for each rate during tx, |
| 399 | * in the @flags member of struct ieee80211_tx_rate. |
| 400 | * |
| 401 | * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. |
| 402 | * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. |
| 403 | * This is set if the current BSS requires ERP protection. |
| 404 | * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. |
| 405 | * @IEEE80211_TX_RC_MCS: HT rate. |
| 406 | * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in |
| 407 | * Greenfield mode. |
| 408 | * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. |
| 409 | * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the |
| 410 | * adjacent 20 MHz channels, if the current channel type is |
| 411 | * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. |
| 412 | * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. |
| 413 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 414 | enum mac80211_rate_control_flags { |
| 415 | IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), |
| 416 | IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), |
| 417 | IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), |
| 418 | |
| 419 | /* rate index is an MCS rate number instead of an index */ |
| 420 | IEEE80211_TX_RC_MCS = BIT(3), |
| 421 | IEEE80211_TX_RC_GREEN_FIELD = BIT(4), |
| 422 | IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), |
| 423 | IEEE80211_TX_RC_DUP_DATA = BIT(6), |
| 424 | IEEE80211_TX_RC_SHORT_GI = BIT(7), |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 425 | }; |
| 426 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 427 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 428 | /* there are 40 bytes if you don't need the rateset to be kept */ |
| 429 | #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 430 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 431 | /* if you do need the rateset, then you have less space */ |
| 432 | #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 |
| 433 | |
| 434 | /* maximum number of rate stages */ |
| 435 | #define IEEE80211_TX_MAX_RATES 5 |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 436 | |
| 437 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 438 | * struct ieee80211_tx_rate - rate selection/status |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 439 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 440 | * @idx: rate index to attempt to send with |
| 441 | * @flags: rate control flags (&enum mac80211_rate_control_flags) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 442 | * @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] | 443 | * |
| 444 | * A value of -1 for @idx indicates an invalid rate and, if used |
| 445 | * in an array of retry rates, that no more rates should be tried. |
| 446 | * |
| 447 | * When used for transmit status reporting, the driver should |
| 448 | * always report the rate along with the flags it used. |
Johannes Berg | c555b9b | 2009-08-07 16:23:43 +0200 | [diff] [blame] | 449 | * |
| 450 | * &struct ieee80211_tx_info contains an array of these structs |
| 451 | * in the control information, and it will be filled by the rate |
| 452 | * control algorithm according to what should be sent. For example, |
| 453 | * if this array contains, in the format { <idx>, <count> } the |
| 454 | * information |
| 455 | * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } |
| 456 | * then this means that the frame should be transmitted |
| 457 | * up to twice at rate 3, up to twice at rate 2, and up to four |
| 458 | * times at rate 1 if it doesn't get acknowledged. Say it gets |
| 459 | * acknowledged by the peer after the fifth attempt, the status |
| 460 | * information should then contain |
| 461 | * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... |
| 462 | * since it was transmitted twice at rate 3, twice at rate 2 |
| 463 | * and once at rate 1 after which we received an acknowledgement. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 464 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 465 | struct ieee80211_tx_rate { |
| 466 | s8 idx; |
| 467 | u8 count; |
| 468 | u8 flags; |
Gustavo F. Padovan | 3f30fc1 | 2010-07-21 10:59:58 +0000 | [diff] [blame] | 469 | } __packed; |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 470 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 471 | /** |
| 472 | * struct ieee80211_tx_info - skb transmit information |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 473 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 474 | * This structure is placed in skb->cb for three uses: |
| 475 | * (1) mac80211 TX control - mac80211 tells the driver what to do |
| 476 | * (2) driver internal use (if applicable) |
| 477 | * (3) TX status information - driver tells mac80211 what happened |
| 478 | * |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 479 | * The TX control's sta pointer is only valid during the ->tx call, |
| 480 | * it may be NULL. |
| 481 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 482 | * @flags: transmit info flags, defined above |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 483 | * @band: the band to transmit on (use for checking for races) |
Johannes Berg | 0f4ac38 | 2008-10-09 12:18:04 +0200 | [diff] [blame] | 484 | * @antenna_sel_tx: antenna to use, 0 for automatic diversity |
Kalle Valo | 8bef7a1 | 2008-11-30 20:56:28 +0200 | [diff] [blame] | 485 | * @pad: padding, ignore |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 486 | * @control: union for control data |
| 487 | * @status: union for status data |
| 488 | * @driver_data: array of driver_data pointers |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 489 | * @ampdu_ack_len: number of acked aggregated frames. |
Daniel Halperin | 93d95b1 | 2010-04-18 09:28:18 -0700 | [diff] [blame] | 490 | * relevant only if IEEE80211_TX_STAT_AMPDU was set. |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 491 | * @ampdu_len: number of aggregated frames. |
Daniel Halperin | 93d95b1 | 2010-04-18 09:28:18 -0700 | [diff] [blame] | 492 | * relevant only if IEEE80211_TX_STAT_AMPDU was set. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 493 | * @ack_signal: signal strength of the ACK frame |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 494 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 495 | struct ieee80211_tx_info { |
| 496 | /* common information */ |
| 497 | u32 flags; |
| 498 | u8 band; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 499 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 500 | u8 antenna_sel_tx; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 501 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 502 | /* 2 byte hole */ |
John W. Linville | 6272710 | 2008-11-12 10:01:41 -0500 | [diff] [blame] | 503 | u8 pad[2]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 504 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 505 | union { |
| 506 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 507 | union { |
| 508 | /* rate control */ |
| 509 | struct { |
| 510 | struct ieee80211_tx_rate rates[ |
| 511 | IEEE80211_TX_MAX_RATES]; |
| 512 | s8 rts_cts_rate_idx; |
| 513 | }; |
| 514 | /* only needed before rate control */ |
| 515 | unsigned long jiffies; |
| 516 | }; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 517 | /* NB: vif can be NULL for injected frames */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 518 | struct ieee80211_vif *vif; |
| 519 | struct ieee80211_key_conf *hw_key; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 520 | struct ieee80211_sta *sta; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 521 | } control; |
| 522 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 523 | struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; |
| 524 | u8 ampdu_ack_len; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 525 | int ack_signal; |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 526 | u8 ampdu_len; |
Johannes Berg | 095dfdb | 2010-05-26 17:19:25 +0200 | [diff] [blame] | 527 | /* 15 bytes free */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 528 | } status; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 529 | struct { |
| 530 | struct ieee80211_tx_rate driver_rates[ |
| 531 | IEEE80211_TX_MAX_RATES]; |
| 532 | void *rate_driver_data[ |
| 533 | IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; |
| 534 | }; |
| 535 | void *driver_data[ |
| 536 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 537 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 538 | }; |
| 539 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 540 | static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) |
| 541 | { |
| 542 | return (struct ieee80211_tx_info *)skb->cb; |
| 543 | } |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 544 | |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 545 | static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) |
| 546 | { |
| 547 | return (struct ieee80211_rx_status *)skb->cb; |
| 548 | } |
| 549 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 550 | /** |
| 551 | * ieee80211_tx_info_clear_status - clear TX status |
| 552 | * |
| 553 | * @info: The &struct ieee80211_tx_info to be cleared. |
| 554 | * |
| 555 | * When the driver passes an skb back to mac80211, it must report |
| 556 | * a number of things in TX status. This function clears everything |
| 557 | * in the TX status but the rate control information (it does clear |
| 558 | * the count since you need to fill that in anyway). |
| 559 | * |
| 560 | * NOTE: You can only use this function if you do NOT use |
| 561 | * info->driver_data! Use info->rate_driver_data |
| 562 | * instead if you need only the less space that allows. |
| 563 | */ |
| 564 | static inline void |
| 565 | ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) |
| 566 | { |
| 567 | int i; |
| 568 | |
| 569 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 570 | offsetof(struct ieee80211_tx_info, control.rates)); |
| 571 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 572 | offsetof(struct ieee80211_tx_info, driver_rates)); |
| 573 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); |
| 574 | /* clear the rate counts */ |
| 575 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) |
| 576 | info->status.rates[i].count = 0; |
| 577 | |
| 578 | BUILD_BUG_ON( |
| 579 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); |
| 580 | memset(&info->status.ampdu_ack_len, 0, |
| 581 | sizeof(struct ieee80211_tx_info) - |
| 582 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); |
| 583 | } |
| 584 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 585 | |
| 586 | /** |
| 587 | * enum mac80211_rx_flags - receive flags |
| 588 | * |
| 589 | * These flags are used with the @flag member of &struct ieee80211_rx_status. |
| 590 | * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. |
| 591 | * Use together with %RX_FLAG_MMIC_STRIPPED. |
| 592 | * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 593 | * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, |
| 594 | * verification has been done by the hardware. |
| 595 | * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. |
| 596 | * If this flag is set, the stack cannot do any replay detection |
| 597 | * hence the driver or hardware will have to do that. |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 598 | * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on |
| 599 | * the frame. |
| 600 | * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on |
| 601 | * the frame. |
Johannes Berg | 6ebacbb | 2011-02-23 15:06:08 +0100 | [diff] [blame] | 602 | * @RX_FLAG_MACTIME_MPDU: The timestamp passed in the RX status (@mactime |
| 603 | * field) is valid and contains the time the first symbol of the MPDU |
| 604 | * was received. This is useful in monitor mode and for proper IBSS |
| 605 | * merging. |
Bruno Randolf | b4f28bb | 2008-07-30 17:19:55 +0200 | [diff] [blame] | 606 | * @RX_FLAG_SHORTPRE: Short preamble was used for this frame |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 607 | * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index |
| 608 | * @RX_FLAG_40MHZ: HT40 (40 MHz) was used |
| 609 | * @RX_FLAG_SHORT_GI: Short guard interval was used |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 610 | */ |
| 611 | enum mac80211_rx_flags { |
| 612 | RX_FLAG_MMIC_ERROR = 1<<0, |
| 613 | RX_FLAG_DECRYPTED = 1<<1, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 614 | RX_FLAG_MMIC_STRIPPED = 1<<3, |
| 615 | RX_FLAG_IV_STRIPPED = 1<<4, |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 616 | RX_FLAG_FAILED_FCS_CRC = 1<<5, |
| 617 | RX_FLAG_FAILED_PLCP_CRC = 1<<6, |
Johannes Berg | 6ebacbb | 2011-02-23 15:06:08 +0100 | [diff] [blame] | 618 | RX_FLAG_MACTIME_MPDU = 1<<7, |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 619 | RX_FLAG_SHORTPRE = 1<<8, |
| 620 | RX_FLAG_HT = 1<<9, |
| 621 | RX_FLAG_40MHZ = 1<<10, |
| 622 | RX_FLAG_SHORT_GI = 1<<11, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 623 | }; |
| 624 | |
| 625 | /** |
| 626 | * struct ieee80211_rx_status - receive status |
| 627 | * |
| 628 | * The low-level driver should provide this information (the subset |
| 629 | * supported by hardware) to the 802.11 code with each received |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 630 | * frame, in the skb's control buffer (cb). |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 631 | * |
Bruno Randolf | c132bec | 2008-02-18 11:20:51 +0900 | [diff] [blame] | 632 | * @mactime: value in microseconds of the 64-bit Time Synchronization Function |
| 633 | * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 634 | * @band: the active band when this frame was received |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 635 | * @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] | 636 | * @signal: signal strength when receiving this frame, either in dBm, in dB or |
| 637 | * unspecified depending on the hardware capabilities flags |
| 638 | * @IEEE80211_HW_SIGNAL_* |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 639 | * @antenna: antenna used |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 640 | * @rate_idx: index of data rate into band's supported rates or MCS index if |
| 641 | * HT rates are use (RX_FLAG_HT) |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 642 | * @flag: %RX_FLAG_* |
Johannes Berg | 554891e | 2010-09-24 12:38:25 +0200 | [diff] [blame] | 643 | * @rx_flags: internal RX flags for mac80211 |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 644 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 645 | struct ieee80211_rx_status { |
| 646 | u64 mactime; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 647 | enum ieee80211_band band; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 648 | int freq; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 649 | int signal; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 650 | int antenna; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 651 | int rate_idx; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 652 | int flag; |
Johannes Berg | 554891e | 2010-09-24 12:38:25 +0200 | [diff] [blame] | 653 | unsigned int rx_flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 654 | }; |
| 655 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 656 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 657 | * enum ieee80211_conf_flags - configuration flags |
| 658 | * |
| 659 | * Flags to define PHY configuration options |
| 660 | * |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 661 | * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this |
| 662 | * to determine for example whether to calculate timestamps for packets |
| 663 | * or not, do not use instead of filter flags! |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 664 | * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only). |
| 665 | * This is the power save mode defined by IEEE 802.11-2007 section 11.2, |
| 666 | * meaning that the hardware still wakes up for beacons, is able to |
| 667 | * transmit frames and receive the possible acknowledgment frames. |
| 668 | * Not to be confused with hardware specific wakeup/sleep states, |
| 669 | * driver is responsible for that. See the section "Powersave support" |
| 670 | * for more. |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 671 | * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set |
| 672 | * the driver should be prepared to handle configuration requests but |
| 673 | * may turn the device off as much as possible. Typically, this flag will |
| 674 | * be set when an interface is set UP but not associated or scanning, but |
| 675 | * it can also be unset in that case when monitor interfaces are active. |
Felix Fietkau | 4552124 | 2010-07-28 02:40:49 +0200 | [diff] [blame] | 676 | * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main |
| 677 | * operating channel. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 678 | */ |
| 679 | enum ieee80211_conf_flags { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 680 | IEEE80211_CONF_MONITOR = (1<<0), |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 681 | IEEE80211_CONF_PS = (1<<1), |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 682 | IEEE80211_CONF_IDLE = (1<<2), |
Felix Fietkau | 4552124 | 2010-07-28 02:40:49 +0200 | [diff] [blame] | 683 | IEEE80211_CONF_OFFCHANNEL = (1<<3), |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 684 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 685 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 686 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 687 | /** |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 688 | * enum ieee80211_conf_changed - denotes which configuration changed |
| 689 | * |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 690 | * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 691 | * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed |
Johannes Berg | e255d5e | 2009-04-22 12:40:07 +0200 | [diff] [blame] | 692 | * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 693 | * @IEEE80211_CONF_CHANGE_POWER: the TX power changed |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 694 | * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 695 | * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 696 | * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 697 | * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 698 | */ |
| 699 | enum ieee80211_conf_changed { |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 700 | IEEE80211_CONF_CHANGE_SMPS = BIT(1), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 701 | IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 702 | IEEE80211_CONF_CHANGE_MONITOR = BIT(3), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 703 | IEEE80211_CONF_CHANGE_PS = BIT(4), |
Johannes Berg | e255d5e | 2009-04-22 12:40:07 +0200 | [diff] [blame] | 704 | IEEE80211_CONF_CHANGE_POWER = BIT(5), |
| 705 | IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), |
| 706 | IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 707 | IEEE80211_CONF_CHANGE_IDLE = BIT(8), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 708 | }; |
| 709 | |
| 710 | /** |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 711 | * enum ieee80211_smps_mode - spatial multiplexing power save mode |
| 712 | * |
Kalle Valo | 9d173fc | 2010-01-14 13:09:14 +0200 | [diff] [blame] | 713 | * @IEEE80211_SMPS_AUTOMATIC: automatic |
| 714 | * @IEEE80211_SMPS_OFF: off |
| 715 | * @IEEE80211_SMPS_STATIC: static |
| 716 | * @IEEE80211_SMPS_DYNAMIC: dynamic |
| 717 | * @IEEE80211_SMPS_NUM_MODES: internal, don't use |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 718 | */ |
| 719 | enum ieee80211_smps_mode { |
| 720 | IEEE80211_SMPS_AUTOMATIC, |
| 721 | IEEE80211_SMPS_OFF, |
| 722 | IEEE80211_SMPS_STATIC, |
| 723 | IEEE80211_SMPS_DYNAMIC, |
| 724 | |
| 725 | /* keep last */ |
| 726 | IEEE80211_SMPS_NUM_MODES, |
| 727 | }; |
| 728 | |
| 729 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 730 | * struct ieee80211_conf - configuration of the device |
| 731 | * |
| 732 | * This struct indicates how the driver shall configure the hardware. |
| 733 | * |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 734 | * @flags: configuration flags defined above |
| 735 | * |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 736 | * @listen_interval: listen interval in units of beacon interval |
Johannes Berg | 9ccebe6 | 2009-04-23 10:32:36 +0200 | [diff] [blame] | 737 | * @max_sleep_period: the maximum number of beacon intervals to sleep for |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 738 | * before checking the beacon for a TIM bit (managed mode only); this |
| 739 | * value will be only achievable between DTIM frames, the hardware |
| 740 | * needs to check for the multicast traffic bit in DTIM beacons. |
| 741 | * This variable is valid only when the CONF_PS flag is set. |
Johannes Berg | 56007a0 | 2010-01-26 14:19:52 +0100 | [diff] [blame] | 742 | * @ps_dtim_period: The DTIM period of the AP we're connected to, for use |
| 743 | * in power saving. Power saving will not be enabled until a beacon |
| 744 | * has been received and the DTIM period is known. |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 745 | * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the |
| 746 | * powersave documentation below. This variable is valid only when |
| 747 | * the CONF_PS flag is set. |
| 748 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 749 | * @power_level: requested transmit power (in dBm) |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 750 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 751 | * @channel: the channel to tune to |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 752 | * @channel_type: the channel (HT) type |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 753 | * |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 754 | * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame |
| 755 | * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, |
| 756 | * but actually means the number of transmissions not the number of retries |
| 757 | * @short_frame_max_tx_count: Maximum number of transmissions for a "short" |
| 758 | * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the |
| 759 | * number of transmissions not the number of retries |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 760 | * |
| 761 | * @smps_mode: spatial multiplexing powersave mode; note that |
| 762 | * %IEEE80211_SMPS_STATIC is used when the device is not |
| 763 | * configured for an HT channel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 764 | */ |
| 765 | struct ieee80211_conf { |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 766 | u32 flags; |
Juuso Oikarinen | ff61638 | 2010-06-09 09:51:52 +0300 | [diff] [blame] | 767 | int power_level, dynamic_ps_timeout; |
Johannes Berg | 9ccebe6 | 2009-04-23 10:32:36 +0200 | [diff] [blame] | 768 | int max_sleep_period; |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 769 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 770 | u16 listen_interval; |
Johannes Berg | 56007a0 | 2010-01-26 14:19:52 +0100 | [diff] [blame] | 771 | u8 ps_dtim_period; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 772 | |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 773 | u8 long_frame_max_tx_count, short_frame_max_tx_count; |
| 774 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 775 | struct ieee80211_channel *channel; |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 776 | enum nl80211_channel_type channel_type; |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 777 | enum ieee80211_smps_mode smps_mode; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 778 | }; |
| 779 | |
| 780 | /** |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 781 | * struct ieee80211_channel_switch - holds the channel switch data |
| 782 | * |
| 783 | * The information provided in this structure is required for channel switch |
| 784 | * operation. |
| 785 | * |
| 786 | * @timestamp: value in microseconds of the 64-bit Time Synchronization |
| 787 | * Function (TSF) timer when the frame containing the channel switch |
| 788 | * announcement was received. This is simply the rx.mactime parameter |
| 789 | * the driver passed into mac80211. |
| 790 | * @block_tx: Indicates whether transmission must be blocked before the |
| 791 | * scheduled channel switch, as indicated by the AP. |
| 792 | * @channel: the new channel to switch to |
| 793 | * @count: the number of TBTT's until the channel switch event |
| 794 | */ |
| 795 | struct ieee80211_channel_switch { |
| 796 | u64 timestamp; |
| 797 | bool block_tx; |
| 798 | struct ieee80211_channel *channel; |
| 799 | u8 count; |
| 800 | }; |
| 801 | |
| 802 | /** |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 803 | * struct ieee80211_vif - per-interface data |
| 804 | * |
| 805 | * Data in this structure is continually present for driver |
| 806 | * use during the life of a virtual interface. |
| 807 | * |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 808 | * @type: type of this virtual interface |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 809 | * @bss_conf: BSS configuration for this interface, either our own |
| 810 | * or the BSS we're associated to |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 811 | * @addr: address of this interface |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 812 | * @p2p: indicates whether this AP or STA interface is a p2p |
| 813 | * interface, i.e. a GO or p2p-sta respectively |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 814 | * @drv_priv: data area for driver use, will always be aligned to |
| 815 | * sizeof(void *). |
| 816 | */ |
| 817 | struct ieee80211_vif { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 818 | enum nl80211_iftype type; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 819 | struct ieee80211_bss_conf bss_conf; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 820 | u8 addr[ETH_ALEN]; |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 821 | bool p2p; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 822 | /* must be last */ |
| 823 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 824 | }; |
| 825 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 826 | static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) |
| 827 | { |
| 828 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 829 | return vif->type == NL80211_IFTYPE_MESH_POINT; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 830 | #endif |
| 831 | return false; |
| 832 | } |
| 833 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 834 | /** |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 835 | * enum ieee80211_key_flags - key flags |
| 836 | * |
| 837 | * These flags are used for communication about keys between the driver |
| 838 | * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. |
| 839 | * |
| 840 | * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates |
| 841 | * that the STA this key will be used with could be using QoS. |
| 842 | * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the |
| 843 | * driver to indicate that it requires IV generation for this |
| 844 | * particular key. |
| 845 | * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by |
| 846 | * the driver for a TKIP key if it requires Michael MIC |
| 847 | * generation in software. |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 848 | * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates |
| 849 | * that the key is pairwise rather then a shared key. |
Jouni Malinen | 1f7d77a | 2009-01-08 13:32:10 +0200 | [diff] [blame] | 850 | * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a |
| 851 | * CCMP key if it requires CCMP encryption of management frames (MFP) to |
| 852 | * be done in software. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 853 | */ |
| 854 | enum ieee80211_key_flags { |
| 855 | IEEE80211_KEY_FLAG_WMM_STA = 1<<0, |
| 856 | IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, |
| 857 | IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 858 | IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, |
Jouni Malinen | 1f7d77a | 2009-01-08 13:32:10 +0200 | [diff] [blame] | 859 | IEEE80211_KEY_FLAG_SW_MGMT = 1<<4, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 860 | }; |
| 861 | |
| 862 | /** |
| 863 | * struct ieee80211_key_conf - key information |
| 864 | * |
| 865 | * This key information is given by mac80211 to the driver by |
| 866 | * the set_key() callback in &struct ieee80211_ops. |
| 867 | * |
| 868 | * @hw_key_idx: To be set by the driver, this is the key index the driver |
| 869 | * 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] | 870 | * encrypted in hardware. |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 871 | * @cipher: The key's cipher suite selector. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 872 | * @flags: key flags, see &enum ieee80211_key_flags. |
| 873 | * @keyidx: the key index (0-3) |
| 874 | * @keylen: key material length |
Luis R. Rodriguez | ffd7891 | 2008-06-21 10:02:46 -0400 | [diff] [blame] | 875 | * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) |
| 876 | * data block: |
| 877 | * - Temporal Encryption Key (128 bits) |
| 878 | * - Temporal Authenticator Tx MIC Key (64 bits) |
| 879 | * - Temporal Authenticator Rx MIC Key (64 bits) |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 880 | * @icv_len: The ICV length for this key type |
| 881 | * @iv_len: The IV length for this key type |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 882 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 883 | struct ieee80211_key_conf { |
Johannes Berg | 97359d1 | 2010-08-10 09:46:38 +0200 | [diff] [blame] | 884 | u32 cipher; |
Felix Fietkau | 76708de | 2008-10-05 18:02:48 +0200 | [diff] [blame] | 885 | u8 icv_len; |
| 886 | u8 iv_len; |
Johannes Berg | 6a7664d | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 887 | u8 hw_key_idx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 888 | u8 flags; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 889 | s8 keyidx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 890 | u8 keylen; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 891 | u8 key[0]; |
| 892 | }; |
| 893 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 894 | /** |
| 895 | * enum set_key_cmd - key command |
| 896 | * |
| 897 | * Used with the set_key() callback in &struct ieee80211_ops, this |
| 898 | * indicates whether a key is being removed or added. |
| 899 | * |
| 900 | * @SET_KEY: a key is set |
| 901 | * @DISABLE_KEY: a key must be disabled |
| 902 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 903 | enum set_key_cmd { |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 904 | SET_KEY, DISABLE_KEY, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 905 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 906 | |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 907 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 908 | * struct ieee80211_sta - station table entry |
| 909 | * |
| 910 | * A station table entry represents a station we are possibly |
| 911 | * communicating with. Since stations are RCU-managed in |
| 912 | * mac80211, any ieee80211_sta pointer you get access to must |
| 913 | * either be protected by rcu_read_lock() explicitly or implicitly, |
| 914 | * or you must take good care to not use such a pointer after a |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 915 | * call to your sta_remove callback that removed it. |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 916 | * |
| 917 | * @addr: MAC address |
| 918 | * @aid: AID we assigned to the station if we're an AP |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 919 | * @supp_rates: Bitmap of supported rates (per band) |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 920 | * @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] | 921 | * @drv_priv: data area for driver use, will always be aligned to |
| 922 | * sizeof(void *), size is determined in hw information. |
| 923 | */ |
| 924 | struct ieee80211_sta { |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 925 | u32 supp_rates[IEEE80211_NUM_BANDS]; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 926 | u8 addr[ETH_ALEN]; |
| 927 | u16 aid; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 928 | struct ieee80211_sta_ht_cap ht_cap; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 929 | |
| 930 | /* must be last */ |
| 931 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 932 | }; |
| 933 | |
| 934 | /** |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 935 | * enum sta_notify_cmd - sta notify command |
| 936 | * |
| 937 | * Used with the sta_notify() callback in &struct ieee80211_ops, this |
Sujith | 38a6cc7 | 2010-05-19 11:32:30 +0530 | [diff] [blame] | 938 | * indicates if an associated station made a power state transition. |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 939 | * |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 940 | * @STA_NOTIFY_SLEEP: a station is now sleeping |
| 941 | * @STA_NOTIFY_AWAKE: a sleeping station woke up |
| 942 | */ |
Christian Lamparter | 89fad57 | 2008-12-09 16:28:06 +0100 | [diff] [blame] | 943 | enum sta_notify_cmd { |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 944 | STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, |
| 945 | }; |
| 946 | |
| 947 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 948 | * enum ieee80211_tkip_key_type - get tkip key |
| 949 | * |
| 950 | * Used by drivers which need to get a tkip key for skb. Some drivers need a |
| 951 | * phase 1 key, others need a phase 2 key. A single function allows the driver |
| 952 | * to get the key, this enum indicates what type of key is required. |
| 953 | * |
| 954 | * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key |
| 955 | * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key |
| 956 | */ |
| 957 | enum ieee80211_tkip_key_type { |
| 958 | IEEE80211_TKIP_P1_KEY, |
| 959 | IEEE80211_TKIP_P2_KEY, |
| 960 | }; |
| 961 | |
| 962 | /** |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 963 | * enum ieee80211_hw_flags - hardware flags |
| 964 | * |
| 965 | * These flags are used to indicate hardware capabilities to |
| 966 | * the stack. Generally, flags here should have their meaning |
| 967 | * done in a way that the simplest hardware doesn't need setting |
| 968 | * any particular flags. There are some exceptions to this rule, |
| 969 | * however, so you are advised to review these flags carefully. |
| 970 | * |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 971 | * @IEEE80211_HW_HAS_RATE_CONTROL: |
| 972 | * The hardware or firmware includes rate control, and cannot be |
| 973 | * controlled by the stack. As such, no rate control algorithm |
| 974 | * should be instantiated, and the TX rate reported to userspace |
| 975 | * will be taken from the TX status instead of the rate control |
| 976 | * algorithm. |
| 977 | * Note that this requires that the driver implement a number of |
| 978 | * callbacks so it has the correct information, it needs to have |
| 979 | * the @set_rts_threshold callback and must look at the BSS config |
| 980 | * @use_cts_prot for G/N protection, @use_short_slot for slot |
| 981 | * timing in 2.4 GHz and @use_short_preamble for preambles for |
| 982 | * CCK frames. |
| 983 | * |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 984 | * @IEEE80211_HW_RX_INCLUDES_FCS: |
| 985 | * Indicates that received frames passed to the stack include |
| 986 | * the FCS at the end. |
| 987 | * |
| 988 | * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: |
| 989 | * Some wireless LAN chipsets buffer broadcast/multicast frames |
| 990 | * for power saving stations in the hardware/firmware and others |
| 991 | * rely on the host system for such buffering. This option is used |
| 992 | * to configure the IEEE 802.11 upper layer to buffer broadcast and |
| 993 | * multicast frames when there are power saving stations so that |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 994 | * the driver can fetch them with ieee80211_get_buffered_bc(). |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 995 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 996 | * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: |
| 997 | * Hardware is not capable of short slot operation on the 2.4 GHz band. |
| 998 | * |
| 999 | * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: |
| 1000 | * Hardware is not capable of receiving frames with short preamble on |
| 1001 | * the 2.4 GHz band. |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1002 | * |
| 1003 | * @IEEE80211_HW_SIGNAL_UNSPEC: |
| 1004 | * Hardware can provide signal values but we don't know its units. We |
| 1005 | * expect values between 0 and @max_signal. |
| 1006 | * If possible please provide dB or dBm instead. |
| 1007 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1008 | * @IEEE80211_HW_SIGNAL_DBM: |
| 1009 | * Hardware gives signal values in dBm, decibel difference from |
| 1010 | * one milliwatt. This is the preferred method since it is standardized |
| 1011 | * between different devices. @max_signal does not need to be set. |
| 1012 | * |
Tomas Winkler | 06ff47b | 2008-06-18 17:53:44 +0300 | [diff] [blame] | 1013 | * @IEEE80211_HW_SPECTRUM_MGMT: |
| 1014 | * Hardware supports spectrum management defined in 802.11h |
| 1015 | * Measurement, Channel Switch, Quieting, TPC |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 1016 | * |
| 1017 | * @IEEE80211_HW_AMPDU_AGGREGATION: |
| 1018 | * Hardware supports 11n A-MPDU aggregation. |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 1019 | * |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1020 | * @IEEE80211_HW_SUPPORTS_PS: |
| 1021 | * Hardware has power save support (i.e. can go to sleep). |
| 1022 | * |
| 1023 | * @IEEE80211_HW_PS_NULLFUNC_STACK: |
| 1024 | * Hardware requires nullfunc frame handling in stack, implies |
| 1025 | * stack support for dynamic PS. |
| 1026 | * |
| 1027 | * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: |
| 1028 | * Hardware has support for dynamic PS. |
Jouni Malinen | 4375d08 | 2009-01-08 13:32:11 +0200 | [diff] [blame] | 1029 | * |
| 1030 | * @IEEE80211_HW_MFP_CAPABLE: |
| 1031 | * Hardware supports management frame protection (MFP, IEEE 802.11w). |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1032 | * |
| 1033 | * @IEEE80211_HW_BEACON_FILTER: |
| 1034 | * Hardware supports dropping of irrelevant beacon frames to |
| 1035 | * avoid waking up cpu. |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1036 | * |
| 1037 | * @IEEE80211_HW_SUPPORTS_STATIC_SMPS: |
| 1038 | * Hardware supports static spatial multiplexing powersave, |
| 1039 | * ie. can turn off all but one chain even on HT connections |
| 1040 | * that should be using more chains. |
| 1041 | * |
| 1042 | * @IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS: |
| 1043 | * Hardware supports dynamic spatial multiplexing powersave, |
| 1044 | * ie. can turn off all but one chain and then wake the rest |
| 1045 | * up as required after, for example, rts/cts handshake. |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 1046 | * |
| 1047 | * @IEEE80211_HW_SUPPORTS_UAPSD: |
| 1048 | * Hardware supports Unscheduled Automatic Power Save Delivery |
| 1049 | * (U-APSD) in managed mode. The mode is configured with |
| 1050 | * conf_tx() operation. |
Vivek Natarajan | 375177b | 2010-02-09 14:50:28 +0530 | [diff] [blame] | 1051 | * |
| 1052 | * @IEEE80211_HW_REPORTS_TX_ACK_STATUS: |
| 1053 | * Hardware can provide ack status reports of Tx frames to |
| 1054 | * the stack. |
| 1055 | * |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 1056 | * @IEEE80211_HW_CONNECTION_MONITOR: |
| 1057 | * The hardware performs its own connection monitoring, including |
| 1058 | * periodic keep-alives to the AP and probing the AP on beacon loss. |
| 1059 | * When this flag is set, signaling beacon-loss will cause an immediate |
| 1060 | * change to disassociated state. |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 1061 | * |
| 1062 | * @IEEE80211_HW_SUPPORTS_CQM_RSSI: |
| 1063 | * Hardware can do connection quality monitoring - i.e. it can monitor |
| 1064 | * connection quality related parameters, such as the RSSI level and |
| 1065 | * provide notifications if configured trigger levels are reached. |
| 1066 | * |
Johannes Berg | e5b900d | 2010-07-29 16:08:55 +0200 | [diff] [blame] | 1067 | * @IEEE80211_HW_NEED_DTIM_PERIOD: |
| 1068 | * This device needs to know the DTIM period for the BSS before |
| 1069 | * associating. |
Johannes Berg | e31b821 | 2010-10-05 19:39:30 +0200 | [diff] [blame] | 1070 | * |
| 1071 | * @IEEE80211_HW_SUPPORTS_PER_STA_GTK: The device's crypto engine supports |
| 1072 | * per-station GTKs as used by IBSS RSN or during fast transition. If |
| 1073 | * the device doesn't support per-station GTKs, but can be asked not |
| 1074 | * to decrypt group addressed frames, then IBSS RSN support is still |
| 1075 | * possible but software crypto will be used. Advertise the wiphy flag |
| 1076 | * only in that case. |
Arik Nemtsov | d057e5a | 2011-01-31 22:29:13 +0200 | [diff] [blame] | 1077 | * |
| 1078 | * @IEEE80211_HW_AP_LINK_PS: When operating in AP mode the device |
| 1079 | * autonomously manages the PS status of connected stations. When |
| 1080 | * this flag is set mac80211 will not trigger PS mode for connected |
| 1081 | * stations based on the PM bit of incoming frames. |
| 1082 | * Use ieee80211_start_ps()/ieee8021_end_ps() to manually configure |
| 1083 | * the PS mode of connected stations. |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 1084 | */ |
| 1085 | enum ieee80211_hw_flags { |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 1086 | IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 1087 | IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, |
| 1088 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1089 | IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, |
| 1090 | IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1091 | IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, |
Johannes Berg | 7fee537 | 2009-01-30 11:13:06 +0100 | [diff] [blame] | 1092 | IEEE80211_HW_SIGNAL_DBM = 1<<6, |
Johannes Berg | e5b900d | 2010-07-29 16:08:55 +0200 | [diff] [blame] | 1093 | IEEE80211_HW_NEED_DTIM_PERIOD = 1<<7, |
Johannes Berg | 7fee537 | 2009-01-30 11:13:06 +0100 | [diff] [blame] | 1094 | IEEE80211_HW_SPECTRUM_MGMT = 1<<8, |
| 1095 | IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, |
| 1096 | IEEE80211_HW_SUPPORTS_PS = 1<<10, |
| 1097 | IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, |
| 1098 | IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, |
| 1099 | IEEE80211_HW_MFP_CAPABLE = 1<<13, |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1100 | IEEE80211_HW_BEACON_FILTER = 1<<14, |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1101 | IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15, |
| 1102 | IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16, |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 1103 | IEEE80211_HW_SUPPORTS_UAPSD = 1<<17, |
Vivek Natarajan | 375177b | 2010-02-09 14:50:28 +0530 | [diff] [blame] | 1104 | IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18, |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 1105 | IEEE80211_HW_CONNECTION_MONITOR = 1<<19, |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 1106 | IEEE80211_HW_SUPPORTS_CQM_RSSI = 1<<20, |
Johannes Berg | e31b821 | 2010-10-05 19:39:30 +0200 | [diff] [blame] | 1107 | IEEE80211_HW_SUPPORTS_PER_STA_GTK = 1<<21, |
Arik Nemtsov | d057e5a | 2011-01-31 22:29:13 +0200 | [diff] [blame] | 1108 | IEEE80211_HW_AP_LINK_PS = 1<<22, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 1109 | }; |
| 1110 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 1111 | /** |
| 1112 | * struct ieee80211_hw - hardware information and state |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1113 | * |
| 1114 | * This structure contains the configuration and hardware |
| 1115 | * information for an 802.11 PHY. |
| 1116 | * |
| 1117 | * @wiphy: This points to the &struct wiphy allocated for this |
| 1118 | * 802.11 PHY. You must fill in the @perm_addr and @dev |
| 1119 | * members of this structure using SET_IEEE80211_DEV() |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1120 | * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported |
| 1121 | * bands (with channels, bitrates) are registered here. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1122 | * |
| 1123 | * @conf: &struct ieee80211_conf, device configuration, don't use. |
| 1124 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1125 | * @priv: pointer to private area that was allocated for driver use |
| 1126 | * along with this structure. |
| 1127 | * |
| 1128 | * @flags: hardware flags, see &enum ieee80211_hw_flags. |
| 1129 | * |
| 1130 | * @extra_tx_headroom: headroom to reserve in each transmit skb |
| 1131 | * for use by the driver (e.g. for transmit headers.) |
| 1132 | * |
| 1133 | * @channel_change_time: time (in microseconds) it takes to change channels. |
| 1134 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1135 | * @max_signal: Maximum value for signal (rssi) in RX information, used |
| 1136 | * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1137 | * |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1138 | * @max_listen_interval: max listen interval in units of beacon interval |
| 1139 | * that HW supports |
| 1140 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1141 | * @queues: number of available hardware transmit queues for |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1142 | * data packets. WMM/QoS requires at least four, these |
| 1143 | * queues need to have configurable access parameters. |
| 1144 | * |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 1145 | * @rate_control_algorithm: rate control algorithm for this hardware. |
| 1146 | * If unset (NULL), the default algorithm will be used. Must be |
| 1147 | * set before calling ieee80211_register_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1148 | * |
| 1149 | * @vif_data_size: size (in bytes) of the drv_priv data area |
| 1150 | * within &struct ieee80211_vif. |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1151 | * @sta_data_size: size (in bytes) of the drv_priv data area |
| 1152 | * within &struct ieee80211_sta. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 1153 | * |
Helmut Schaa | 78be49e | 2010-10-02 11:31:55 +0200 | [diff] [blame] | 1154 | * @max_rates: maximum number of alternate rate retry stages the hw |
| 1155 | * can handle. |
| 1156 | * @max_report_rates: maximum number of alternate rate retry stages |
| 1157 | * the hw can report back. |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1158 | * @max_rate_tries: maximum number of tries for each stage |
John W. Linville | 4e6cbfd | 2010-07-29 16:14:13 -0400 | [diff] [blame] | 1159 | * |
| 1160 | * @napi_weight: weight used for NAPI polling. You must specify an |
| 1161 | * appropriate value here if a napi_poll operation is provided |
| 1162 | * by your driver. |
Randy Dunlap | 858022a | 2011-03-18 09:33:02 -0700 | [diff] [blame] | 1163 | * |
Luciano Coelho | df6ba5d | 2011-01-12 15:26:30 +0200 | [diff] [blame] | 1164 | * @max_rx_aggregation_subframes: maximum buffer size (number of |
| 1165 | * sub-frames) to be used for A-MPDU block ack receiver |
| 1166 | * aggregation. |
| 1167 | * This is only relevant if the device has restrictions on the |
| 1168 | * number of subframes, if it relies on mac80211 to do reordering |
| 1169 | * it shouldn't be set. |
Johannes Berg | 5dd36bc | 2011-01-18 13:52:23 +0100 | [diff] [blame] | 1170 | * |
| 1171 | * @max_tx_aggregation_subframes: maximum number of subframes in an |
| 1172 | * aggregate an HT driver will transmit, used by the peer as a |
| 1173 | * hint to size its reorder buffer. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 1174 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1175 | struct ieee80211_hw { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1176 | struct ieee80211_conf conf; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1177 | struct wiphy *wiphy; |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 1178 | const char *rate_control_algorithm; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1179 | void *priv; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1180 | u32 flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1181 | unsigned int extra_tx_headroom; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1182 | int channel_change_time; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1183 | int vif_data_size; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1184 | int sta_data_size; |
John W. Linville | 4e6cbfd | 2010-07-29 16:14:13 -0400 | [diff] [blame] | 1185 | int napi_weight; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1186 | u16 queues; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1187 | u16 max_listen_interval; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1188 | s8 max_signal; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1189 | u8 max_rates; |
Helmut Schaa | 78be49e | 2010-10-02 11:31:55 +0200 | [diff] [blame] | 1190 | u8 max_report_rates; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1191 | u8 max_rate_tries; |
Luciano Coelho | df6ba5d | 2011-01-12 15:26:30 +0200 | [diff] [blame] | 1192 | u8 max_rx_aggregation_subframes; |
Johannes Berg | 5dd36bc | 2011-01-18 13:52:23 +0100 | [diff] [blame] | 1193 | u8 max_tx_aggregation_subframes; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1194 | }; |
| 1195 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1196 | /** |
Luis R. Rodriguez | 9a95371 | 2009-01-22 15:05:53 -0800 | [diff] [blame] | 1197 | * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy |
| 1198 | * |
| 1199 | * @wiphy: the &struct wiphy which we want to query |
| 1200 | * |
| 1201 | * mac80211 drivers can use this to get to their respective |
| 1202 | * &struct ieee80211_hw. Drivers wishing to get to their own private |
| 1203 | * structure can then access it via hw->priv. Note that mac802111 drivers should |
| 1204 | * not use wiphy_priv() to try to get their private driver structure as this |
| 1205 | * is already used internally by mac80211. |
| 1206 | */ |
| 1207 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); |
| 1208 | |
| 1209 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1210 | * SET_IEEE80211_DEV - set device for 802.11 hardware |
| 1211 | * |
| 1212 | * @hw: the &struct ieee80211_hw to set the device for |
| 1213 | * @dev: the &struct device of this 802.11 device |
| 1214 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1215 | static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) |
| 1216 | { |
| 1217 | set_wiphy_dev(hw->wiphy, dev); |
| 1218 | } |
| 1219 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1220 | /** |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1221 | * 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] | 1222 | * |
| 1223 | * @hw: the &struct ieee80211_hw to set the MAC address for |
| 1224 | * @addr: the address to set |
| 1225 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1226 | static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) |
| 1227 | { |
| 1228 | memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); |
| 1229 | } |
| 1230 | |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1231 | static inline struct ieee80211_rate * |
| 1232 | ieee80211_get_tx_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1233 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1234 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1235 | if (WARN_ON(c->control.rates[0].idx < 0)) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1236 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1237 | return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1238 | } |
| 1239 | |
| 1240 | static inline struct ieee80211_rate * |
| 1241 | ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1242 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1243 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1244 | if (c->control.rts_cts_rate_idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1245 | return NULL; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1246 | 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] | 1247 | } |
| 1248 | |
| 1249 | static inline struct ieee80211_rate * |
| 1250 | ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 1251 | const struct ieee80211_tx_info *c, int idx) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1252 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1253 | if (c->control.rates[idx + 1].idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1254 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1255 | 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] | 1256 | } |
| 1257 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1258 | /** |
| 1259 | * DOC: Hardware crypto acceleration |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1260 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1261 | * mac80211 is capable of taking advantage of many hardware |
| 1262 | * acceleration designs for encryption and decryption operations. |
| 1263 | * |
| 1264 | * The set_key() callback in the &struct ieee80211_ops for a given |
| 1265 | * device is called to enable hardware acceleration of encryption and |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1266 | * decryption. The callback takes a @sta parameter that will be NULL |
| 1267 | * for default keys or keys used for transmission only, or point to |
| 1268 | * the station information for the peer for individual keys. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1269 | * Multiple transmission keys with the same key index may be used when |
| 1270 | * VLANs are configured for an access point. |
| 1271 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1272 | * When transmitting, the TX control data will use the @hw_key_idx |
| 1273 | * selected by the driver by modifying the &struct ieee80211_key_conf |
| 1274 | * pointed to by the @key parameter to the set_key() function. |
| 1275 | * |
| 1276 | * The set_key() call for the %SET_KEY command should return 0 if |
| 1277 | * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be |
| 1278 | * added; if you return 0 then hw_key_idx must be assigned to the |
| 1279 | * hardware key index, you are free to use the full u8 range. |
| 1280 | * |
| 1281 | * When the cmd is %DISABLE_KEY then it must succeed. |
| 1282 | * |
| 1283 | * Note that it is permissible to not decrypt a frame even if a key |
| 1284 | * for it has been uploaded to hardware, the stack will not make any |
| 1285 | * decision based on whether a key has been uploaded or not but rather |
| 1286 | * based on the receive flags. |
| 1287 | * |
| 1288 | * The &struct ieee80211_key_conf structure pointed to by the @key |
| 1289 | * parameter is guaranteed to be valid until another call to set_key() |
| 1290 | * removes it, but it can only be used as a cookie to differentiate |
| 1291 | * keys. |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1292 | * |
| 1293 | * In TKIP some HW need to be provided a phase 1 key, for RX decryption |
| 1294 | * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key |
| 1295 | * handler. |
| 1296 | * The update_tkip_key() call updates the driver with the new phase 1 key. |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1297 | * This happens every time the iv16 wraps around (every 65536 packets). The |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1298 | * set_key() call will happen only once for each key (unless the AP did |
| 1299 | * 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] | 1300 | * 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] | 1301 | * handler is software decryption with wrap around of iv16. |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1302 | */ |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1303 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1304 | /** |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1305 | * DOC: Powersave support |
| 1306 | * |
| 1307 | * mac80211 has support for various powersave implementations. |
| 1308 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1309 | * First, it can support hardware that handles all powersaving by itself, |
| 1310 | * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware |
| 1311 | * flag. In that case, it will be told about the desired powersave mode |
| 1312 | * with the %IEEE80211_CONF_PS flag depending on the association status. |
| 1313 | * The hardware must take care of sending nullfunc frames when necessary, |
| 1314 | * i.e. when entering and leaving powersave mode. The hardware is required |
| 1315 | * to look at the AID in beacons and signal to the AP that it woke up when |
| 1316 | * it finds traffic directed to it. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1317 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1318 | * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in |
| 1319 | * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused |
| 1320 | * with hardware wakeup and sleep states. Driver is responsible for waking |
Bob Copeland | 2738bd6 | 2010-08-21 16:39:01 -0400 | [diff] [blame] | 1321 | * up the hardware before issuing commands to the hardware and putting it |
| 1322 | * back to sleep at appropriate times. |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1323 | * |
| 1324 | * When PS is enabled, hardware needs to wakeup for beacons and receive the |
| 1325 | * buffered multicast/broadcast frames after the beacon. Also it must be |
| 1326 | * possible to send frames and receive the acknowledment frame. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1327 | * |
| 1328 | * Other hardware designs cannot send nullfunc frames by themselves and also |
| 1329 | * need software support for parsing the TIM bitmap. This is also supported |
| 1330 | * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and |
| 1331 | * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still |
Johannes Berg | 955394c | 2009-04-16 17:04:25 +0200 | [diff] [blame] | 1332 | * required to pass up beacons. The hardware is still required to handle |
| 1333 | * waking up for multicast traffic; if it cannot the driver must handle that |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1334 | * as best as it can, mac80211 is too slow to do that. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1335 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1336 | * Dynamic powersave is an extension to normal powersave in which the |
| 1337 | * hardware stays awake for a user-specified period of time after sending a |
| 1338 | * frame so that reply frames need not be buffered and therefore delayed to |
| 1339 | * the next wakeup. It's compromise of getting good enough latency when |
| 1340 | * there's data traffic and still saving significantly power in idle |
| 1341 | * periods. |
| 1342 | * |
Bob Copeland | 2738bd6 | 2010-08-21 16:39:01 -0400 | [diff] [blame] | 1343 | * Dynamic powersave is simply supported by mac80211 enabling and disabling |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1344 | * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS |
| 1345 | * flag and mac80211 will handle everything automatically. Additionally, |
| 1346 | * hardware having support for the dynamic PS feature may set the |
| 1347 | * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support |
| 1348 | * dynamic PS mode itself. The driver needs to look at the |
| 1349 | * @dynamic_ps_timeout hardware configuration value and use it that value |
| 1350 | * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable |
| 1351 | * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS |
| 1352 | * enabled whenever user has enabled powersave. |
| 1353 | * |
Juuso Oikarinen | f90754c | 2010-06-21 08:59:39 +0300 | [diff] [blame] | 1354 | * Some hardware need to toggle a single shared antenna between WLAN and |
| 1355 | * Bluetooth to facilitate co-existence. These types of hardware set |
| 1356 | * limitations on the use of host controlled dynamic powersave whenever there |
| 1357 | * is simultaneous WLAN and Bluetooth traffic. For these types of hardware, the |
| 1358 | * driver may request temporarily going into full power save, in order to |
| 1359 | * enable toggling the antenna between BT and WLAN. If the driver requests |
| 1360 | * disabling dynamic powersave, the @dynamic_ps_timeout value will be |
| 1361 | * temporarily set to zero until the driver re-enables dynamic powersave. |
| 1362 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1363 | * Driver informs U-APSD client support by enabling |
| 1364 | * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the |
| 1365 | * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS |
| 1366 | * Nullfunc frames and stay awake until the service period has ended. To |
| 1367 | * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames |
| 1368 | * from that AC are transmitted with powersave enabled. |
| 1369 | * |
| 1370 | * Note: U-APSD client mode is not yet supported with |
| 1371 | * %IEEE80211_HW_PS_NULLFUNC_STACK. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1372 | */ |
| 1373 | |
| 1374 | /** |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1375 | * DOC: Beacon filter support |
| 1376 | * |
| 1377 | * Some hardware have beacon filter support to reduce host cpu wakeups |
| 1378 | * which will reduce system power consumption. It usuallly works so that |
| 1379 | * the firmware creates a checksum of the beacon but omits all constantly |
| 1380 | * changing elements (TSF, TIM etc). Whenever the checksum changes the |
| 1381 | * beacon is forwarded to the host, otherwise it will be just dropped. That |
| 1382 | * way the host will only receive beacons where some relevant information |
| 1383 | * (for example ERP protection or WMM settings) have changed. |
| 1384 | * |
Johannes Berg | 955394c | 2009-04-16 17:04:25 +0200 | [diff] [blame] | 1385 | * Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER |
| 1386 | * hardware capability. The driver needs to enable beacon filter support |
| 1387 | * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When |
| 1388 | * power save is enabled, the stack will not check for beacon loss and the |
| 1389 | * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). |
| 1390 | * |
| 1391 | * The time (or number of beacons missed) until the firmware notifies the |
| 1392 | * driver of a beacon loss event (which in turn causes the driver to call |
| 1393 | * ieee80211_beacon_loss()) should be configurable and will be controlled |
| 1394 | * by mac80211 and the roaming algorithm in the future. |
| 1395 | * |
| 1396 | * Since there may be constantly changing information elements that nothing |
| 1397 | * in the software stack cares about, we will, in the future, have mac80211 |
| 1398 | * tell the driver which information elements are interesting in the sense |
| 1399 | * that we want to see changes in them. This will include |
| 1400 | * - a list of information element IDs |
| 1401 | * - a list of OUIs for the vendor information element |
| 1402 | * |
| 1403 | * Ideally, the hardware would filter out any beacons without changes in the |
| 1404 | * requested elements, but if it cannot support that it may, at the expense |
| 1405 | * of some efficiency, filter out only a subset. For example, if the device |
| 1406 | * doesn't support checking for OUIs it should pass up all changes in all |
| 1407 | * vendor information elements. |
| 1408 | * |
| 1409 | * Note that change, for the sake of simplification, also includes information |
| 1410 | * elements appearing or disappearing from the beacon. |
| 1411 | * |
| 1412 | * Some hardware supports an "ignore list" instead, just make sure nothing |
| 1413 | * that was requested is on the ignore list, and include commonly changing |
| 1414 | * information element IDs in the ignore list, for example 11 (BSS load) and |
| 1415 | * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, |
| 1416 | * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility |
| 1417 | * it could also include some currently unused IDs. |
| 1418 | * |
| 1419 | * |
| 1420 | * In addition to these capabilities, hardware should support notifying the |
| 1421 | * host of changes in the beacon RSSI. This is relevant to implement roaming |
| 1422 | * when no traffic is flowing (when traffic is flowing we see the RSSI of |
| 1423 | * the received data packets). This can consist in notifying the host when |
| 1424 | * the RSSI changes significantly or when it drops below or rises above |
| 1425 | * configurable thresholds. In the future these thresholds will also be |
| 1426 | * configured by mac80211 (which gets them from userspace) to implement |
| 1427 | * them as the roaming algorithm requires. |
| 1428 | * |
| 1429 | * If the hardware cannot implement this, the driver should ask it to |
| 1430 | * periodically pass beacon frames to the host so that software can do the |
| 1431 | * signal strength threshold checking. |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1432 | */ |
| 1433 | |
| 1434 | /** |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1435 | * DOC: Spatial multiplexing power save |
| 1436 | * |
| 1437 | * SMPS (Spatial multiplexing power save) is a mechanism to conserve |
| 1438 | * power in an 802.11n implementation. For details on the mechanism |
| 1439 | * and rationale, please refer to 802.11 (as amended by 802.11n-2009) |
| 1440 | * "11.2.3 SM power save". |
| 1441 | * |
| 1442 | * The mac80211 implementation is capable of sending action frames |
| 1443 | * to update the AP about the station's SMPS mode, and will instruct |
| 1444 | * the driver to enter the specific mode. It will also announce the |
| 1445 | * requested SMPS mode during the association handshake. Hardware |
| 1446 | * support for this feature is required, and can be indicated by |
| 1447 | * hardware flags. |
| 1448 | * |
| 1449 | * The default mode will be "automatic", which nl80211/cfg80211 |
| 1450 | * defines to be dynamic SMPS in (regular) powersave, and SMPS |
| 1451 | * turned off otherwise. |
| 1452 | * |
| 1453 | * To support this feature, the driver must set the appropriate |
| 1454 | * hardware support flags, and handle the SMPS flag to the config() |
| 1455 | * operation. It will then with this mechanism be instructed to |
| 1456 | * enter the requested SMPS mode while associated to an HT AP. |
| 1457 | */ |
| 1458 | |
| 1459 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1460 | * DOC: Frame filtering |
| 1461 | * |
| 1462 | * mac80211 requires to see many management frames for proper |
| 1463 | * operation, and users may want to see many more frames when |
| 1464 | * in monitor mode. However, for best CPU usage and power consumption, |
| 1465 | * having as few frames as possible percolate through the stack is |
| 1466 | * desirable. Hence, the hardware should filter as much as possible. |
| 1467 | * |
| 1468 | * To achieve this, mac80211 uses filter flags (see below) to tell |
| 1469 | * the driver's configure_filter() function which frames should be |
| 1470 | * passed to mac80211 and which should be filtered out. |
| 1471 | * |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1472 | * Before configure_filter() is invoked, the prepare_multicast() |
| 1473 | * callback is invoked with the parameters @mc_count and @mc_list |
| 1474 | * for the combined multicast address list of all virtual interfaces. |
| 1475 | * It's use is optional, and it returns a u64 that is passed to |
| 1476 | * configure_filter(). Additionally, configure_filter() has the |
| 1477 | * arguments @changed_flags telling which flags were changed and |
| 1478 | * @total_flags with the new flag states. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1479 | * |
| 1480 | * If your device has no multicast address filters your driver will |
| 1481 | * need to check both the %FIF_ALLMULTI flag and the @mc_count |
| 1482 | * parameter to see whether multicast frames should be accepted |
| 1483 | * or dropped. |
| 1484 | * |
Michael Buesch | d0f5afb | 2008-02-12 20:12:45 +0100 | [diff] [blame] | 1485 | * All unsupported flags in @total_flags must be cleared. |
| 1486 | * Hardware does not support a flag if it is incapable of _passing_ |
| 1487 | * the frame to the stack. Otherwise the driver must ignore |
| 1488 | * the flag, but not clear it. |
| 1489 | * You must _only_ clear the flag (announce no support for the |
| 1490 | * flag to mac80211) if you are not able to pass the packet type |
| 1491 | * to the stack (so the hardware always filters it). |
| 1492 | * So for example, you should clear @FIF_CONTROL, if your hardware |
| 1493 | * always filters control frames. If your hardware always passes |
| 1494 | * control frames to the kernel and is incapable of filtering them, |
| 1495 | * you do _not_ clear the @FIF_CONTROL flag. |
| 1496 | * This rule applies to all other FIF flags as well. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1497 | */ |
| 1498 | |
| 1499 | /** |
| 1500 | * enum ieee80211_filter_flags - hardware filter flags |
| 1501 | * |
| 1502 | * These flags determine what the filter in hardware should be |
| 1503 | * programmed to let through and what should not be passed to the |
| 1504 | * stack. It is always safe to pass more frames than requested, |
| 1505 | * but this has negative impact on power consumption. |
| 1506 | * |
| 1507 | * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, |
| 1508 | * think of the BSS as your network segment and then this corresponds |
| 1509 | * to the regular ethernet device promiscuous mode. |
| 1510 | * |
| 1511 | * @FIF_ALLMULTI: pass all multicast frames, this is used if requested |
| 1512 | * by the user or if the hardware is not capable of filtering by |
| 1513 | * multicast address. |
| 1514 | * |
| 1515 | * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the |
| 1516 | * %RX_FLAG_FAILED_FCS_CRC for them) |
| 1517 | * |
| 1518 | * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set |
| 1519 | * the %RX_FLAG_FAILED_PLCP_CRC for them |
| 1520 | * |
| 1521 | * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate |
| 1522 | * to the hardware that it should not filter beacons or probe responses |
| 1523 | * by BSSID. Filtering them can greatly reduce the amount of processing |
| 1524 | * mac80211 needs to do and the amount of CPU wakeups, so you should |
| 1525 | * honour this flag if possible. |
| 1526 | * |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1527 | * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 1528 | * is not set then only those addressed to this station. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1529 | * |
| 1530 | * @FIF_OTHER_BSS: pass frames destined to other BSSes |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1531 | * |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 1532 | * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only |
| 1533 | * those addressed to this station. |
| 1534 | * |
| 1535 | * @FIF_PROBE_REQ: pass probe request frames |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1536 | */ |
| 1537 | enum ieee80211_filter_flags { |
| 1538 | FIF_PROMISC_IN_BSS = 1<<0, |
| 1539 | FIF_ALLMULTI = 1<<1, |
| 1540 | FIF_FCSFAIL = 1<<2, |
| 1541 | FIF_PLCPFAIL = 1<<3, |
| 1542 | FIF_BCN_PRBRESP_PROMISC = 1<<4, |
| 1543 | FIF_CONTROL = 1<<5, |
| 1544 | FIF_OTHER_BSS = 1<<6, |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1545 | FIF_PSPOLL = 1<<7, |
Johannes Berg | 7be5086 | 2010-10-13 12:06:24 +0200 | [diff] [blame] | 1546 | FIF_PROBE_REQ = 1<<8, |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1547 | }; |
| 1548 | |
| 1549 | /** |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1550 | * enum ieee80211_ampdu_mlme_action - A-MPDU actions |
| 1551 | * |
| 1552 | * These flags are used with the ampdu_action() callback in |
| 1553 | * &struct ieee80211_ops to indicate which action is needed. |
Johannes Berg | 827d42c | 2009-11-22 12:28:41 +0100 | [diff] [blame] | 1554 | * |
| 1555 | * Note that drivers MUST be able to deal with a TX aggregation |
| 1556 | * session being stopped even before they OK'ed starting it by |
Johannes Berg | 5d22c89 | 2010-06-10 10:21:40 +0200 | [diff] [blame] | 1557 | * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer |
Johannes Berg | 827d42c | 2009-11-22 12:28:41 +0100 | [diff] [blame] | 1558 | * might receive the addBA frame and send a delBA right away! |
| 1559 | * |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1560 | * @IEEE80211_AMPDU_RX_START: start Rx aggregation |
| 1561 | * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1562 | * @IEEE80211_AMPDU_TX_START: start Tx aggregation |
| 1563 | * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation |
Johannes Berg | b172023 | 2009-03-23 17:28:39 +0100 | [diff] [blame] | 1564 | * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1565 | */ |
| 1566 | enum ieee80211_ampdu_mlme_action { |
| 1567 | IEEE80211_AMPDU_RX_START, |
| 1568 | IEEE80211_AMPDU_RX_STOP, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1569 | IEEE80211_AMPDU_TX_START, |
| 1570 | IEEE80211_AMPDU_TX_STOP, |
Johannes Berg | b172023 | 2009-03-23 17:28:39 +0100 | [diff] [blame] | 1571 | IEEE80211_AMPDU_TX_OPERATIONAL, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1572 | }; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1573 | |
| 1574 | /** |
| 1575 | * struct ieee80211_ops - callbacks from mac80211 to the driver |
| 1576 | * |
| 1577 | * This structure contains various callbacks that the driver may |
| 1578 | * handle or, in some cases, must handle, for example to configure |
| 1579 | * the hardware to a new channel or to transmit a frame. |
| 1580 | * |
| 1581 | * @tx: Handler that 802.11 module calls for each transmitted frame. |
| 1582 | * skb contains the buffer starting from the IEEE 802.11 header. |
| 1583 | * The low-level driver should send the frame out based on |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1584 | * configuration in the TX control data. This handler should, |
| 1585 | * preferably, never fail and stop queues appropriately, more |
| 1586 | * importantly, however, it must never fail for A-MPDU-queues. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1587 | * This function should return NETDEV_TX_OK except in very |
| 1588 | * limited cases. |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1589 | * Must be implemented and atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1590 | * |
| 1591 | * @start: Called before the first netdevice attached to the hardware |
| 1592 | * is enabled. This should turn on the hardware and must turn on |
| 1593 | * frame reception (for possibly enabled monitor interfaces.) |
| 1594 | * Returns negative error codes, these may be seen in userspace, |
| 1595 | * or zero. |
| 1596 | * When the device is started it should not have a MAC address |
| 1597 | * to avoid acknowledging frames before a non-monitor device |
| 1598 | * is added. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1599 | * Must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1600 | * |
| 1601 | * @stop: Called after last netdevice attached to the hardware |
| 1602 | * is disabled. This should turn off the hardware (at least |
| 1603 | * it must turn off frame reception.) |
| 1604 | * May be called right after add_interface if that rejects |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 1605 | * an interface. If you added any work onto the mac80211 workqueue |
| 1606 | * you should ensure to cancel it on this callback. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1607 | * Must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1608 | * |
| 1609 | * @add_interface: Called when a netdevice attached to the hardware is |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1610 | * enabled. Because it is not called for monitor mode devices, @start |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1611 | * and @stop must be implemented. |
| 1612 | * The driver should perform any initialization it needs before |
| 1613 | * the device can be enabled. The initial configuration for the |
| 1614 | * interface is given in the conf parameter. |
| 1615 | * The callback may refuse to add an interface by returning a |
| 1616 | * negative error code (which will be seen in userspace.) |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1617 | * Must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1618 | * |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1619 | * @change_interface: Called when a netdevice changes type. This callback |
| 1620 | * is optional, but only if it is supported can interface types be |
| 1621 | * switched while the interface is UP. The callback may sleep. |
| 1622 | * Note that while an interface is being switched, it will not be |
| 1623 | * found by the interface iteration callbacks. |
| 1624 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1625 | * @remove_interface: Notifies a driver that an interface is going down. |
| 1626 | * The @stop callback is called after this if it is the last interface |
| 1627 | * and no monitor interfaces are present. |
| 1628 | * When all interfaces are removed, the MAC address in the hardware |
| 1629 | * must be cleared so the device no longer acknowledges packets, |
| 1630 | * the mac_addr member of the conf structure is, however, set to the |
| 1631 | * MAC address of the device going away. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1632 | * Hence, this callback must be implemented. It can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1633 | * |
| 1634 | * @config: Handler for configuration requests. IEEE 802.11 code calls this |
| 1635 | * function to change hardware configuration, e.g., channel. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1636 | * This function should never fail but returns a negative error code |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1637 | * if it does. The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1638 | * |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1639 | * @bss_info_changed: Handler for configuration requests related to BSS |
| 1640 | * parameters that may vary during BSS's lifespan, and may affect low |
| 1641 | * level driver (e.g. assoc/disassoc status, erp parameters). |
| 1642 | * This function should not be used if no BSS has been set, unless |
| 1643 | * for association indication. The @changed parameter indicates which |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1644 | * of the bss parameters has changed when a call is made. The callback |
| 1645 | * can sleep. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1646 | * |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1647 | * @prepare_multicast: Prepare for multicast filter configuration. |
| 1648 | * This callback is optional, and its return value is passed |
| 1649 | * to configure_filter(). This callback must be atomic. |
| 1650 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1651 | * @configure_filter: Configure the device's RX filter. |
| 1652 | * See the section "Frame filtering" for more information. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1653 | * This callback must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1654 | * |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 1655 | * @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] | 1656 | * must be set or cleared for a given STA. Must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1657 | * |
| 1658 | * @set_key: See the section "Hardware crypto acceleration" |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1659 | * This callback is only called between add_interface and |
| 1660 | * remove_interface calls, i.e. while the given virtual interface |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1661 | * is enabled. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1662 | * Returns a negative error code if the key can't be added. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1663 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1664 | * |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1665 | * @update_tkip_key: See the section "Hardware crypto acceleration" |
| 1666 | * This callback will be called in the context of Rx. Called for drivers |
| 1667 | * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. |
Kalle Valo | eb807fb | 2010-01-24 14:55:12 +0200 | [diff] [blame] | 1668 | * The callback must be atomic. |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1669 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1670 | * @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] | 1671 | * the scan state machine in stack. The scan must honour the channel |
Kalle Valo | 9050bdd | 2009-03-22 21:57:21 +0200 | [diff] [blame] | 1672 | * configuration done by the regulatory agent in the wiphy's |
| 1673 | * registered bands. The hardware (or the driver) needs to make sure |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1674 | * that power save is disabled. |
| 1675 | * The @req ie/ie_len members are rewritten by mac80211 to contain the |
| 1676 | * entire IEs after the SSID, so that drivers need not look at these |
| 1677 | * at all but just send them after the SSID -- mac80211 includes the |
| 1678 | * (extended) supported rates and HT information (where applicable). |
| 1679 | * When the scan finishes, ieee80211_scan_completed() must be called; |
| 1680 | * note that it also must be called when the scan cannot finish due to |
| 1681 | * any error unless this callback returned a negative error code. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1682 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1683 | * |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1684 | * @sw_scan_start: Notifier function that is called just before a software scan |
| 1685 | * is started. Can be NULL, if the driver doesn't need this notification. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1686 | * The callback can sleep. |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1687 | * |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1688 | * @sw_scan_complete: Notifier function that is called just after a |
| 1689 | * software scan finished. Can be NULL, if the driver doesn't need |
| 1690 | * this notification. |
| 1691 | * The callback can sleep. |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1692 | * |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1693 | * @get_stats: Return low-level statistics. |
| 1694 | * Returns zero if statistics are available. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1695 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1696 | * |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1697 | * @get_tkip_seq: If your device implements TKIP encryption in hardware this |
| 1698 | * callback should be provided to read the TKIP transmit IVs (both IV32 |
| 1699 | * and IV16) for the given key from hardware. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1700 | * The callback must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1701 | * |
Arik Nemtsov | f23a478 | 2010-11-08 11:51:06 +0200 | [diff] [blame] | 1702 | * @set_frag_threshold: Configuration of fragmentation threshold. Assign this |
| 1703 | * if the device does fragmentation by itself; if this callback is |
| 1704 | * implemented then the stack will not do fragmentation. |
| 1705 | * The callback can sleep. |
| 1706 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1707 | * @set_rts_threshold: Configuration of RTS threshold (if device needs it) |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1708 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1709 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1710 | * @sta_add: Notifies low level driver about addition of an associated station, |
| 1711 | * AP, IBSS/WDS/mesh peer etc. This callback can sleep. |
| 1712 | * |
| 1713 | * @sta_remove: Notifies low level driver about removal of an associated |
| 1714 | * station, AP, IBSS/WDS/mesh peer etc. This callback can sleep. |
| 1715 | * |
| 1716 | * @sta_notify: Notifies low level driver about power state transition of an |
Arik Nemtsov | d057e5a | 2011-01-31 22:29:13 +0200 | [diff] [blame] | 1717 | * associated station, AP, IBSS/WDS/mesh peer etc. For a VIF operating |
| 1718 | * in AP mode, this callback will not be called when the flag |
| 1719 | * %IEEE80211_HW_AP_LINK_PS is set. Must be atomic. |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 1720 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1721 | * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 1722 | * bursting) for a hardware TX queue. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1723 | * Returns a negative error code on failure. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1724 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1725 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1726 | * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1727 | * this is only used for IBSS mode BSSID merging and debugging. Is not a |
Alina Friedrichsen | 7b08b3b | 2009-02-05 17:58:34 +0100 | [diff] [blame] | 1728 | * required function. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1729 | * The callback can sleep. |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1730 | * |
| 1731 | * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. |
| 1732 | * Currently, this is only used for IBSS mode debugging. Is not a |
Alina Friedrichsen | 7b08b3b | 2009-02-05 17:58:34 +0100 | [diff] [blame] | 1733 | * required function. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1734 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1735 | * |
| 1736 | * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize |
| 1737 | * with other STAs in the IBSS. This is only used in IBSS mode. This |
| 1738 | * function is optional if the firmware/hardware takes full care of |
| 1739 | * TSF synchronization. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1740 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1741 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1742 | * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. |
| 1743 | * This is needed only for IBSS mode and the result of this function is |
| 1744 | * used to determine whether to reply to Probe Requests. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1745 | * Returns non-zero if this device sent the last beacon. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1746 | * The callback can sleep. |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1747 | * |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1748 | * @ampdu_action: Perform a certain A-MPDU action |
| 1749 | * The RA/TID combination determines the destination and TID we want |
| 1750 | * the ampdu action to be performed for. The action is defined through |
| 1751 | * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1752 | * is the first frame we expect to perform the action on. Notice |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1753 | * that TX/RX_STOP can pass NULL for this parameter. |
Johannes Berg | 0b01f03 | 2011-01-18 13:51:05 +0100 | [diff] [blame] | 1754 | * The @buf_size parameter is only valid when the action is set to |
| 1755 | * %IEEE80211_AMPDU_TX_OPERATIONAL and indicates the peer's reorder |
Johannes Berg | 5312c3f | 2011-04-01 13:52:34 +0200 | [diff] [blame] | 1756 | * buffer size (number of subframes) for this session -- the driver |
| 1757 | * may neither send aggregates containing more subframes than this |
| 1758 | * nor send aggregates in a way that lost frames would exceed the |
| 1759 | * buffer size. If just limiting the aggregate size, this would be |
| 1760 | * possible with a buf_size of 8: |
| 1761 | * - TX: 1.....7 |
| 1762 | * - RX: 2....7 (lost frame #1) |
| 1763 | * - TX: 8..1... |
| 1764 | * which is invalid since #1 was now re-transmitted well past the |
| 1765 | * buffer size of 8. Correct ways to retransmit #1 would be: |
| 1766 | * - TX: 1 or 18 or 81 |
| 1767 | * Even "189" would be wrong since 1 could be lost again. |
| 1768 | * |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1769 | * Returns a negative error code on failure. |
Johannes Berg | 85ad181 | 2010-06-10 10:21:49 +0200 | [diff] [blame] | 1770 | * The callback can sleep. |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1771 | * |
Randy Dunlap | 4e8998f | 2010-05-21 11:28:33 -0700 | [diff] [blame] | 1772 | * @get_survey: Return per-channel survey information |
| 1773 | * |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1774 | * @rfkill_poll: Poll rfkill hardware state. If you need this, you also |
| 1775 | * need to set wiphy->rfkill_poll to %true before registration, |
| 1776 | * and need to call wiphy_rfkill_set_hw_state() in the callback. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1777 | * The callback can sleep. |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1778 | * |
Lukáš Turek | 310bc67 | 2009-12-21 22:50:48 +0100 | [diff] [blame] | 1779 | * @set_coverage_class: Set slot time for given coverage class as specified |
| 1780 | * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout |
| 1781 | * accordingly. This callback is not required and may sleep. |
| 1782 | * |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1783 | * @testmode_cmd: Implement a cfg80211 test mode command. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1784 | * The callback can sleep. |
Johannes Berg | a80f7c0 | 2009-12-23 13:15:32 +0100 | [diff] [blame] | 1785 | * |
| 1786 | * @flush: Flush all pending frames from the hardware queue, making sure |
| 1787 | * that the hardware queues are empty. If the parameter @drop is set |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1788 | * to %true, pending frames may be dropped. The callback can sleep. |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 1789 | * |
| 1790 | * @channel_switch: Drivers that need (or want) to offload the channel |
| 1791 | * switch operation for CSAs received from the AP may implement this |
| 1792 | * callback. They must then call ieee80211_chswitch_done() to indicate |
| 1793 | * completion of the channel switch. |
John W. Linville | 4e6cbfd | 2010-07-29 16:14:13 -0400 | [diff] [blame] | 1794 | * |
| 1795 | * @napi_poll: Poll Rx queue for incoming data frames. |
Bruno Randolf | 79b1c46 | 2010-11-24 14:34:41 +0900 | [diff] [blame] | 1796 | * |
| 1797 | * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. |
| 1798 | * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may |
| 1799 | * reject TX/RX mask combinations they cannot support by returning -EINVAL |
| 1800 | * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). |
| 1801 | * |
| 1802 | * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). |
Johannes Berg | 4976b4e | 2011-01-04 13:02:32 +0100 | [diff] [blame] | 1803 | * |
| 1804 | * @remain_on_channel: Starts an off-channel period on the given channel, must |
| 1805 | * call back to ieee80211_ready_on_channel() when on that channel. Note |
| 1806 | * that normal channel traffic is not stopped as this is intended for hw |
| 1807 | * offload. Frames to transmit on the off-channel channel are transmitted |
| 1808 | * normally except for the %IEEE80211_TX_CTL_TX_OFFCHAN flag. When the |
| 1809 | * duration (which will always be non-zero) expires, the driver must call |
| 1810 | * ieee80211_remain_on_channel_expired(). This callback may sleep. |
| 1811 | * @cancel_remain_on_channel: Requests that an ongoing off-channel period is |
| 1812 | * aborted before it expires. This callback may sleep. |
Johannes Berg | 5f16a43 | 2011-02-25 15:36:57 +0100 | [diff] [blame] | 1813 | * @offchannel_tx: Transmit frame on another channel, wait for a response |
| 1814 | * and return. Reliable TX status must be reported for the frame. If the |
| 1815 | * return value is 1, then the @remain_on_channel will be used with a |
| 1816 | * regular transmission (if supported.) |
| 1817 | * @offchannel_tx_cancel_wait: cancel wait associated with offchannel TX |
John W. Linville | 38c0915 | 2011-03-07 16:19:18 -0500 | [diff] [blame] | 1818 | * |
| 1819 | * @set_ringparam: Set tx and rx ring sizes. |
| 1820 | * |
| 1821 | * @get_ringparam: Get tx and rx ring current and maximum sizes. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1822 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1823 | struct ieee80211_ops { |
Johannes Berg | 7bb4568 | 2011-02-24 14:42:06 +0100 | [diff] [blame] | 1824 | void (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1825 | int (*start)(struct ieee80211_hw *hw); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1826 | void (*stop)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1827 | int (*add_interface)(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1828 | struct ieee80211_vif *vif); |
Johannes Berg | 34d4bc4 | 2010-08-27 12:35:58 +0200 | [diff] [blame] | 1829 | int (*change_interface)(struct ieee80211_hw *hw, |
| 1830 | struct ieee80211_vif *vif, |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 1831 | enum nl80211_iftype new_type, bool p2p); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1832 | void (*remove_interface)(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1833 | struct ieee80211_vif *vif); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1834 | int (*config)(struct ieee80211_hw *hw, u32 changed); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1835 | void (*bss_info_changed)(struct ieee80211_hw *hw, |
| 1836 | struct ieee80211_vif *vif, |
| 1837 | struct ieee80211_bss_conf *info, |
| 1838 | u32 changed); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1839 | u64 (*prepare_multicast)(struct ieee80211_hw *hw, |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1840 | struct netdev_hw_addr_list *mc_list); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1841 | void (*configure_filter)(struct ieee80211_hw *hw, |
| 1842 | unsigned int changed_flags, |
| 1843 | unsigned int *total_flags, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1844 | u64 multicast); |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1845 | int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
| 1846 | bool set); |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1847 | int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1848 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 1849 | struct ieee80211_key_conf *key); |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1850 | void (*update_tkip_key)(struct ieee80211_hw *hw, |
Johannes Berg | b3fbdcf | 2010-01-21 11:40:47 +0100 | [diff] [blame] | 1851 | struct ieee80211_vif *vif, |
| 1852 | struct ieee80211_key_conf *conf, |
| 1853 | struct ieee80211_sta *sta, |
| 1854 | u32 iv32, u16 *phase1key); |
Johannes Berg | a060bbf | 2010-04-27 11:59:34 +0200 | [diff] [blame] | 1855 | int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1856 | struct cfg80211_scan_request *req); |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1857 | void (*sw_scan_start)(struct ieee80211_hw *hw); |
| 1858 | void (*sw_scan_complete)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1859 | int (*get_stats)(struct ieee80211_hw *hw, |
| 1860 | struct ieee80211_low_level_stats *stats); |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1861 | void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, |
| 1862 | u32 *iv32, u16 *iv16); |
Arik Nemtsov | f23a478 | 2010-11-08 11:51:06 +0200 | [diff] [blame] | 1863 | int (*set_frag_threshold)(struct ieee80211_hw *hw, u32 value); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1864 | int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1865 | int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| 1866 | struct ieee80211_sta *sta); |
| 1867 | int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| 1868 | struct ieee80211_sta *sta); |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1869 | void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1870 | enum sta_notify_cmd, struct ieee80211_sta *sta); |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1871 | int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1872 | const struct ieee80211_tx_queue_params *params); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1873 | u64 (*get_tsf)(struct ieee80211_hw *hw); |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1874 | void (*set_tsf)(struct ieee80211_hw *hw, u64 tsf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1875 | void (*reset_tsf)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1876 | int (*tx_last_beacon)(struct ieee80211_hw *hw); |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1877 | int (*ampdu_action)(struct ieee80211_hw *hw, |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 1878 | struct ieee80211_vif *vif, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1879 | enum ieee80211_ampdu_mlme_action action, |
Johannes Berg | 0b01f03 | 2011-01-18 13:51:05 +0100 | [diff] [blame] | 1880 | struct ieee80211_sta *sta, u16 tid, u16 *ssn, |
| 1881 | u8 buf_size); |
Holger Schurig | 1289723 | 2010-04-19 10:23:57 +0200 | [diff] [blame] | 1882 | int (*get_survey)(struct ieee80211_hw *hw, int idx, |
| 1883 | struct survey_info *survey); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1884 | void (*rfkill_poll)(struct ieee80211_hw *hw); |
Lukáš Turek | 310bc67 | 2009-12-21 22:50:48 +0100 | [diff] [blame] | 1885 | void (*set_coverage_class)(struct ieee80211_hw *hw, u8 coverage_class); |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1886 | #ifdef CONFIG_NL80211_TESTMODE |
| 1887 | int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); |
| 1888 | #endif |
Johannes Berg | a80f7c0 | 2009-12-23 13:15:32 +0100 | [diff] [blame] | 1889 | void (*flush)(struct ieee80211_hw *hw, bool drop); |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 1890 | void (*channel_switch)(struct ieee80211_hw *hw, |
| 1891 | struct ieee80211_channel_switch *ch_switch); |
John W. Linville | 4e6cbfd | 2010-07-29 16:14:13 -0400 | [diff] [blame] | 1892 | int (*napi_poll)(struct ieee80211_hw *hw, int budget); |
Bruno Randolf | 15d9675 | 2010-11-10 12:50:56 +0900 | [diff] [blame] | 1893 | int (*set_antenna)(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant); |
| 1894 | int (*get_antenna)(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant); |
Johannes Berg | 21f8358 | 2010-12-18 17:20:47 +0100 | [diff] [blame] | 1895 | |
| 1896 | int (*remain_on_channel)(struct ieee80211_hw *hw, |
| 1897 | struct ieee80211_channel *chan, |
| 1898 | enum nl80211_channel_type channel_type, |
| 1899 | int duration); |
| 1900 | int (*cancel_remain_on_channel)(struct ieee80211_hw *hw); |
Johannes Berg | 5f16a43 | 2011-02-25 15:36:57 +0100 | [diff] [blame] | 1901 | int (*offchannel_tx)(struct ieee80211_hw *hw, struct sk_buff *skb, |
| 1902 | struct ieee80211_channel *chan, |
| 1903 | enum nl80211_channel_type channel_type, |
| 1904 | unsigned int wait); |
| 1905 | int (*offchannel_tx_cancel_wait)(struct ieee80211_hw *hw); |
John W. Linville | 38c0915 | 2011-03-07 16:19:18 -0500 | [diff] [blame] | 1906 | int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx); |
| 1907 | void (*get_ringparam)(struct ieee80211_hw *hw, |
| 1908 | u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1909 | }; |
| 1910 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1911 | /** |
| 1912 | * ieee80211_alloc_hw - Allocate a new hardware device |
| 1913 | * |
| 1914 | * This must be called once for each hardware device. The returned pointer |
| 1915 | * must be used to refer to this device when calling other functions. |
| 1916 | * mac80211 allocates a private data area for the driver pointed to by |
| 1917 | * @priv in &struct ieee80211_hw, the size of this area is given as |
| 1918 | * @priv_data_len. |
| 1919 | * |
| 1920 | * @priv_data_len: length of private data |
| 1921 | * @ops: callbacks for this device |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1922 | */ |
| 1923 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 1924 | const struct ieee80211_ops *ops); |
| 1925 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1926 | /** |
| 1927 | * ieee80211_register_hw - Register hardware device |
| 1928 | * |
Johannes Berg | dbbea67 | 2008-02-26 14:34:06 +0100 | [diff] [blame] | 1929 | * You must call this function before any other functions in |
| 1930 | * mac80211. Note that before a hardware can be registered, you |
| 1931 | * need to fill the contained wiphy's information. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1932 | * |
| 1933 | * @hw: the device to register as returned by ieee80211_alloc_hw() |
| 1934 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1935 | int ieee80211_register_hw(struct ieee80211_hw *hw); |
| 1936 | |
Johannes Berg | e1e5406 | 2010-11-30 08:58:45 +0100 | [diff] [blame] | 1937 | /** |
| 1938 | * struct ieee80211_tpt_blink - throughput blink description |
| 1939 | * @throughput: throughput in Kbit/sec |
| 1940 | * @blink_time: blink time in milliseconds |
| 1941 | * (full cycle, ie. one off + one on period) |
| 1942 | */ |
| 1943 | struct ieee80211_tpt_blink { |
| 1944 | int throughput; |
| 1945 | int blink_time; |
| 1946 | }; |
| 1947 | |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 1948 | /** |
| 1949 | * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags |
| 1950 | * @IEEE80211_TPT_LEDTRIG_FL_RADIO: enable blinking with radio |
| 1951 | * @IEEE80211_TPT_LEDTRIG_FL_WORK: enable blinking when working |
| 1952 | * @IEEE80211_TPT_LEDTRIG_FL_CONNECTED: enable blinking when at least one |
| 1953 | * interface is connected in some way, including being an AP |
| 1954 | */ |
| 1955 | enum ieee80211_tpt_led_trigger_flags { |
| 1956 | IEEE80211_TPT_LEDTRIG_FL_RADIO = BIT(0), |
| 1957 | IEEE80211_TPT_LEDTRIG_FL_WORK = BIT(1), |
| 1958 | IEEE80211_TPT_LEDTRIG_FL_CONNECTED = BIT(2), |
| 1959 | }; |
| 1960 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1961 | #ifdef CONFIG_MAC80211_LEDS |
| 1962 | extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); |
| 1963 | extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1964 | extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1965 | extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); |
Johannes Berg | e1e5406 | 2010-11-30 08:58:45 +0100 | [diff] [blame] | 1966 | extern char *__ieee80211_create_tpt_led_trigger( |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 1967 | struct ieee80211_hw *hw, unsigned int flags, |
Johannes Berg | e1e5406 | 2010-11-30 08:58:45 +0100 | [diff] [blame] | 1968 | const struct ieee80211_tpt_blink *blink_table, |
| 1969 | unsigned int blink_table_len); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1970 | #endif |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1971 | /** |
| 1972 | * ieee80211_get_tx_led_name - get name of TX LED |
| 1973 | * |
| 1974 | * mac80211 creates a transmit LED trigger for each wireless hardware |
| 1975 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1976 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1977 | * of the trigger so you can automatically link the LED device. |
| 1978 | * |
| 1979 | * @hw: the hardware to get the LED trigger name for |
| 1980 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1981 | static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
| 1982 | { |
| 1983 | #ifdef CONFIG_MAC80211_LEDS |
| 1984 | return __ieee80211_get_tx_led_name(hw); |
| 1985 | #else |
| 1986 | return NULL; |
| 1987 | #endif |
| 1988 | } |
| 1989 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1990 | /** |
| 1991 | * ieee80211_get_rx_led_name - get name of RX LED |
| 1992 | * |
| 1993 | * mac80211 creates a receive LED trigger for each wireless hardware |
| 1994 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1995 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1996 | * of the trigger so you can automatically link the LED device. |
| 1997 | * |
| 1998 | * @hw: the hardware to get the LED trigger name for |
| 1999 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2000 | static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
| 2001 | { |
| 2002 | #ifdef CONFIG_MAC80211_LEDS |
| 2003 | return __ieee80211_get_rx_led_name(hw); |
| 2004 | #else |
| 2005 | return NULL; |
| 2006 | #endif |
| 2007 | } |
| 2008 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 2009 | /** |
| 2010 | * ieee80211_get_assoc_led_name - get name of association LED |
| 2011 | * |
| 2012 | * mac80211 creates a association LED trigger for each wireless hardware |
| 2013 | * that can be used to drive LEDs if your driver registers a LED device. |
| 2014 | * This function returns the name (or %NULL if not configured for LEDs) |
| 2015 | * of the trigger so you can automatically link the LED device. |
| 2016 | * |
| 2017 | * @hw: the hardware to get the LED trigger name for |
| 2018 | */ |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 2019 | static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
| 2020 | { |
| 2021 | #ifdef CONFIG_MAC80211_LEDS |
| 2022 | return __ieee80211_get_assoc_led_name(hw); |
| 2023 | #else |
| 2024 | return NULL; |
| 2025 | #endif |
| 2026 | } |
| 2027 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 2028 | /** |
| 2029 | * ieee80211_get_radio_led_name - get name of radio LED |
| 2030 | * |
| 2031 | * mac80211 creates a radio change LED trigger for each wireless hardware |
| 2032 | * that can be used to drive LEDs if your driver registers a LED device. |
| 2033 | * This function returns the name (or %NULL if not configured for LEDs) |
| 2034 | * of the trigger so you can automatically link the LED device. |
| 2035 | * |
| 2036 | * @hw: the hardware to get the LED trigger name for |
| 2037 | */ |
| 2038 | static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) |
| 2039 | { |
| 2040 | #ifdef CONFIG_MAC80211_LEDS |
| 2041 | return __ieee80211_get_radio_led_name(hw); |
| 2042 | #else |
| 2043 | return NULL; |
| 2044 | #endif |
| 2045 | } |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 2046 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2047 | /** |
Johannes Berg | e1e5406 | 2010-11-30 08:58:45 +0100 | [diff] [blame] | 2048 | * ieee80211_create_tpt_led_trigger - create throughput LED trigger |
| 2049 | * @hw: the hardware to create the trigger for |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 2050 | * @flags: trigger flags, see &enum ieee80211_tpt_led_trigger_flags |
Johannes Berg | e1e5406 | 2010-11-30 08:58:45 +0100 | [diff] [blame] | 2051 | * @blink_table: the blink table -- needs to be ordered by throughput |
| 2052 | * @blink_table_len: size of the blink table |
| 2053 | * |
| 2054 | * This function returns %NULL (in case of error, or if no LED |
| 2055 | * triggers are configured) or the name of the new trigger. |
| 2056 | * This function must be called before ieee80211_register_hw(). |
| 2057 | */ |
| 2058 | static inline char * |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 2059 | ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, unsigned int flags, |
Johannes Berg | e1e5406 | 2010-11-30 08:58:45 +0100 | [diff] [blame] | 2060 | const struct ieee80211_tpt_blink *blink_table, |
| 2061 | unsigned int blink_table_len) |
| 2062 | { |
| 2063 | #ifdef CONFIG_MAC80211_LEDS |
Johannes Berg | 67408c8 | 2010-11-30 08:59:23 +0100 | [diff] [blame] | 2064 | return __ieee80211_create_tpt_led_trigger(hw, flags, blink_table, |
Johannes Berg | e1e5406 | 2010-11-30 08:58:45 +0100 | [diff] [blame] | 2065 | blink_table_len); |
| 2066 | #else |
| 2067 | return NULL; |
| 2068 | #endif |
| 2069 | } |
| 2070 | |
| 2071 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2072 | * ieee80211_unregister_hw - Unregister a hardware device |
| 2073 | * |
| 2074 | * This function instructs mac80211 to free allocated resources |
| 2075 | * and unregister netdevices from the networking subsystem. |
| 2076 | * |
| 2077 | * @hw: the hardware to unregister |
| 2078 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2079 | void ieee80211_unregister_hw(struct ieee80211_hw *hw); |
| 2080 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2081 | /** |
| 2082 | * ieee80211_free_hw - free hardware descriptor |
| 2083 | * |
| 2084 | * This function frees everything that was allocated, including the |
| 2085 | * private data for the driver. You must call ieee80211_unregister_hw() |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2086 | * before calling this function. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2087 | * |
| 2088 | * @hw: the hardware to free |
| 2089 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2090 | void ieee80211_free_hw(struct ieee80211_hw *hw); |
| 2091 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 2092 | /** |
| 2093 | * ieee80211_restart_hw - restart hardware completely |
| 2094 | * |
| 2095 | * Call this function when the hardware was restarted for some reason |
| 2096 | * (hardware error, ...) and the driver is unable to restore its state |
| 2097 | * by itself. mac80211 assumes that at this point the driver/hardware |
| 2098 | * is completely uninitialised and stopped, it starts the process by |
| 2099 | * calling the ->start() operation. The driver will need to reset all |
| 2100 | * internal state that it has prior to calling this function. |
| 2101 | * |
| 2102 | * @hw: the hardware to restart |
| 2103 | */ |
| 2104 | void ieee80211_restart_hw(struct ieee80211_hw *hw); |
| 2105 | |
John W. Linville | 4e6cbfd | 2010-07-29 16:14:13 -0400 | [diff] [blame] | 2106 | /** ieee80211_napi_schedule - schedule NAPI poll |
| 2107 | * |
| 2108 | * Use this function to schedule NAPI polling on a device. |
| 2109 | * |
| 2110 | * @hw: the hardware to start polling |
| 2111 | */ |
| 2112 | void ieee80211_napi_schedule(struct ieee80211_hw *hw); |
| 2113 | |
| 2114 | /** ieee80211_napi_complete - complete NAPI polling |
| 2115 | * |
| 2116 | * Use this function to finish NAPI polling on a device. |
| 2117 | * |
| 2118 | * @hw: the hardware to stop polling |
| 2119 | */ |
| 2120 | void ieee80211_napi_complete(struct ieee80211_hw *hw); |
| 2121 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2122 | /** |
| 2123 | * ieee80211_rx - receive frame |
| 2124 | * |
| 2125 | * Use this function to hand received frames to mac80211. The receive |
Zhu Yi | e3cf8b3 | 2010-03-29 17:35:07 +0800 | [diff] [blame] | 2126 | * buffer in @skb must start with an IEEE 802.11 header. In case of a |
| 2127 | * paged @skb is used, the driver is recommended to put the ieee80211 |
| 2128 | * header of the frame on the linear part of the @skb to avoid memory |
| 2129 | * allocation and/or memcpy by the stack. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2130 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2131 | * This function may not be called in IRQ context. Calls to this function |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 2132 | * for a single hardware must be synchronized against each other. Calls to |
| 2133 | * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be |
| 2134 | * mixed for a single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2135 | * |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 2136 | * In process context use instead ieee80211_rx_ni(). |
Johannes Berg | d20ef63 | 2009-10-11 15:10:40 +0200 | [diff] [blame] | 2137 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2138 | * @hw: the hardware this frame came in on |
| 2139 | * @skb: the buffer to receive, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2140 | */ |
John W. Linville | 103bf9f | 2009-08-20 16:34:15 -0400 | [diff] [blame] | 2141 | void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2142 | |
| 2143 | /** |
| 2144 | * ieee80211_rx_irqsafe - receive frame |
| 2145 | * |
| 2146 | * Like ieee80211_rx() but can be called in IRQ context |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2147 | * (internally defers to a tasklet.) |
| 2148 | * |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 2149 | * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not |
| 2150 | * be mixed for a single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2151 | * |
| 2152 | * @hw: the hardware this frame came in on |
| 2153 | * @skb: the buffer to receive, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2154 | */ |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 2155 | void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2156 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2157 | /** |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 2158 | * ieee80211_rx_ni - receive frame (in process context) |
| 2159 | * |
| 2160 | * Like ieee80211_rx() but can be called in process context |
| 2161 | * (internally disables bottom halves). |
| 2162 | * |
| 2163 | * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may |
| 2164 | * not be mixed for a single hardware. |
| 2165 | * |
| 2166 | * @hw: the hardware this frame came in on |
| 2167 | * @skb: the buffer to receive, owned by mac80211 after this call |
| 2168 | */ |
| 2169 | static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, |
| 2170 | struct sk_buff *skb) |
| 2171 | { |
| 2172 | local_bh_disable(); |
| 2173 | ieee80211_rx(hw, skb); |
| 2174 | local_bh_enable(); |
| 2175 | } |
| 2176 | |
Arik Nemtsov | d057e5a | 2011-01-31 22:29:13 +0200 | [diff] [blame] | 2177 | /** |
| 2178 | * ieee80211_sta_ps_transition - PS transition for connected sta |
| 2179 | * |
| 2180 | * When operating in AP mode with the %IEEE80211_HW_AP_LINK_PS |
| 2181 | * flag set, use this function to inform mac80211 about a connected station |
| 2182 | * entering/leaving PS mode. |
| 2183 | * |
| 2184 | * This function may not be called in IRQ context or with softirqs enabled. |
| 2185 | * |
| 2186 | * Calls to this function for a single hardware must be synchronized against |
| 2187 | * each other. |
| 2188 | * |
| 2189 | * The function returns -EINVAL when the requested PS mode is already set. |
| 2190 | * |
| 2191 | * @sta: currently connected sta |
| 2192 | * @start: start or stop PS |
| 2193 | */ |
| 2194 | int ieee80211_sta_ps_transition(struct ieee80211_sta *sta, bool start); |
| 2195 | |
| 2196 | /** |
| 2197 | * ieee80211_sta_ps_transition_ni - PS transition for connected sta |
| 2198 | * (in process context) |
| 2199 | * |
| 2200 | * Like ieee80211_sta_ps_transition() but can be called in process context |
| 2201 | * (internally disables bottom halves). Concurrent call restriction still |
| 2202 | * applies. |
| 2203 | * |
| 2204 | * @sta: currently connected sta |
| 2205 | * @start: start or stop PS |
| 2206 | */ |
| 2207 | static inline int ieee80211_sta_ps_transition_ni(struct ieee80211_sta *sta, |
| 2208 | bool start) |
| 2209 | { |
| 2210 | int ret; |
| 2211 | |
| 2212 | local_bh_disable(); |
| 2213 | ret = ieee80211_sta_ps_transition(sta, start); |
| 2214 | local_bh_enable(); |
| 2215 | |
| 2216 | return ret; |
| 2217 | } |
| 2218 | |
Gertjan van Wingerde | d24deb2 | 2009-12-04 23:46:54 +0100 | [diff] [blame] | 2219 | /* |
| 2220 | * The TX headroom reserved by mac80211 for its own tx_status functions. |
| 2221 | * This is enough for the radiotap header. |
| 2222 | */ |
| 2223 | #define IEEE80211_TX_STATUS_HEADROOM 13 |
| 2224 | |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 2225 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2226 | * ieee80211_tx_status - transmit status callback |
| 2227 | * |
| 2228 | * Call this function for all transmitted frames after they have been |
| 2229 | * transmitted. It is permissible to not call this function for |
| 2230 | * multicast frames but this can affect statistics. |
| 2231 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2232 | * This function may not be called in IRQ context. Calls to this function |
| 2233 | * for a single hardware must be synchronized against each other. Calls |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 2234 | * to this function, ieee80211_tx_status_ni() and ieee80211_tx_status_irqsafe() |
| 2235 | * may not be mixed for a single hardware. |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2236 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2237 | * @hw: the hardware the frame was transmitted by |
| 2238 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2239 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2240 | void ieee80211_tx_status(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2241 | struct sk_buff *skb); |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2242 | |
| 2243 | /** |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 2244 | * ieee80211_tx_status_ni - transmit status callback (in process context) |
| 2245 | * |
| 2246 | * Like ieee80211_tx_status() but can be called in process context. |
| 2247 | * |
| 2248 | * Calls to this function, ieee80211_tx_status() and |
| 2249 | * ieee80211_tx_status_irqsafe() may not be mixed |
| 2250 | * for a single hardware. |
| 2251 | * |
| 2252 | * @hw: the hardware the frame was transmitted by |
| 2253 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
| 2254 | */ |
| 2255 | static inline void ieee80211_tx_status_ni(struct ieee80211_hw *hw, |
| 2256 | struct sk_buff *skb) |
| 2257 | { |
| 2258 | local_bh_disable(); |
| 2259 | ieee80211_tx_status(hw, skb); |
| 2260 | local_bh_enable(); |
| 2261 | } |
| 2262 | |
| 2263 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2264 | * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2265 | * |
| 2266 | * Like ieee80211_tx_status() but can be called in IRQ context |
| 2267 | * (internally defers to a tasklet.) |
| 2268 | * |
Johannes Stezenbach | 20ed316 | 2010-11-30 16:49:23 +0100 | [diff] [blame] | 2269 | * Calls to this function, ieee80211_tx_status() and |
| 2270 | * ieee80211_tx_status_ni() may not be mixed for a single hardware. |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2271 | * |
| 2272 | * @hw: the hardware the frame was transmitted by |
| 2273 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 2274 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2275 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2276 | struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2277 | |
| 2278 | /** |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 2279 | * ieee80211_beacon_get_tim - beacon generation function |
| 2280 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2281 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 2282 | * @tim_offset: pointer to variable that will receive the TIM IE offset. |
| 2283 | * Set to 0 if invalid (in non-AP modes). |
| 2284 | * @tim_length: pointer to variable that will receive the TIM IE length, |
| 2285 | * (including the ID and length bytes!). |
| 2286 | * Set to 0 if invalid (in non-AP modes). |
| 2287 | * |
| 2288 | * If the driver implements beaconing modes, it must use this function to |
| 2289 | * obtain the beacon frame/template. |
| 2290 | * |
| 2291 | * If the beacon frames are generated by the host system (i.e., not in |
| 2292 | * hardware/firmware), the driver uses this function to get each beacon |
| 2293 | * frame from mac80211 -- it is responsible for calling this function |
| 2294 | * before the beacon is needed (e.g. based on hardware interrupt). |
| 2295 | * |
| 2296 | * If the beacon frames are generated by the device, then the driver |
| 2297 | * must use the returned beacon as the template and change the TIM IE |
| 2298 | * according to the current DTIM parameters/TIM bitmap. |
| 2299 | * |
| 2300 | * The driver is responsible for freeing the returned skb. |
| 2301 | */ |
| 2302 | struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, |
| 2303 | struct ieee80211_vif *vif, |
| 2304 | u16 *tim_offset, u16 *tim_length); |
| 2305 | |
| 2306 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2307 | * ieee80211_beacon_get - beacon generation function |
| 2308 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2309 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2310 | * |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 2311 | * See ieee80211_beacon_get_tim(). |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2312 | */ |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 2313 | static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, |
| 2314 | struct ieee80211_vif *vif) |
| 2315 | { |
| 2316 | return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); |
| 2317 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2318 | |
| 2319 | /** |
Kalle Valo | 7044cc5 | 2010-01-05 20:16:19 +0200 | [diff] [blame] | 2320 | * ieee80211_pspoll_get - retrieve a PS Poll template |
| 2321 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 2322 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2323 | * |
| 2324 | * Creates a PS Poll a template which can, for example, uploaded to |
| 2325 | * hardware. The template must be updated after association so that correct |
| 2326 | * AID, BSSID and MAC address is used. |
| 2327 | * |
| 2328 | * Note: Caller (or hardware) is responsible for setting the |
| 2329 | * &IEEE80211_FCTL_PM bit. |
| 2330 | */ |
| 2331 | struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, |
| 2332 | struct ieee80211_vif *vif); |
| 2333 | |
| 2334 | /** |
| 2335 | * ieee80211_nullfunc_get - retrieve a nullfunc template |
| 2336 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 2337 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2338 | * |
| 2339 | * Creates a Nullfunc template which can, for example, uploaded to |
| 2340 | * hardware. The template must be updated after association so that correct |
| 2341 | * BSSID and address is used. |
| 2342 | * |
| 2343 | * Note: Caller (or hardware) is responsible for setting the |
| 2344 | * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. |
| 2345 | */ |
| 2346 | struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, |
| 2347 | struct ieee80211_vif *vif); |
| 2348 | |
| 2349 | /** |
Kalle Valo | 05e54ea | 2010-01-05 20:16:38 +0200 | [diff] [blame] | 2350 | * ieee80211_probereq_get - retrieve a Probe Request template |
| 2351 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 2352 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2353 | * @ssid: SSID buffer |
| 2354 | * @ssid_len: length of SSID |
| 2355 | * @ie: buffer containing all IEs except SSID for the template |
| 2356 | * @ie_len: length of the IE buffer |
| 2357 | * |
| 2358 | * Creates a Probe Request template which can, for example, be uploaded to |
| 2359 | * hardware. |
| 2360 | */ |
| 2361 | struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, |
| 2362 | struct ieee80211_vif *vif, |
| 2363 | const u8 *ssid, size_t ssid_len, |
| 2364 | const u8 *ie, size_t ie_len); |
| 2365 | |
| 2366 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2367 | * ieee80211_rts_get - RTS frame generation function |
| 2368 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2369 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2370 | * @frame: pointer to the frame that is going to be protected by the RTS. |
| 2371 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2372 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2373 | * @rts: The buffer where to store the RTS frame. |
| 2374 | * |
| 2375 | * If the RTS frames are generated by the host system (i.e., not in |
| 2376 | * hardware/firmware), the low-level driver uses this function to receive |
| 2377 | * the next RTS frame from the 802.11 code. The low-level is responsible |
| 2378 | * for calling this function before and RTS frame is needed. |
| 2379 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2380 | void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2381 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2382 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2383 | struct ieee80211_rts *rts); |
| 2384 | |
| 2385 | /** |
| 2386 | * ieee80211_rts_duration - Get the duration field for an RTS frame |
| 2387 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2388 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2389 | * @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] | 2390 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2391 | * |
| 2392 | * If the RTS is generated in firmware, but the host system must provide |
| 2393 | * the duration field, the low-level driver uses this function to receive |
| 2394 | * the duration field value in little-endian byteorder. |
| 2395 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2396 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 2397 | struct ieee80211_vif *vif, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2398 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2399 | |
| 2400 | /** |
| 2401 | * ieee80211_ctstoself_get - CTS-to-self frame generation function |
| 2402 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2403 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2404 | * @frame: pointer to the frame that is going to be protected by the CTS-to-self. |
| 2405 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2406 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2407 | * @cts: The buffer where to store the CTS-to-self frame. |
| 2408 | * |
| 2409 | * If the CTS-to-self frames are generated by the host system (i.e., not in |
| 2410 | * hardware/firmware), the low-level driver uses this function to receive |
| 2411 | * the next CTS-to-self frame from the 802.11 code. The low-level is responsible |
| 2412 | * for calling this function before and CTS-to-self frame is needed. |
| 2413 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2414 | void ieee80211_ctstoself_get(struct ieee80211_hw *hw, |
| 2415 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2416 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2417 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2418 | struct ieee80211_cts *cts); |
| 2419 | |
| 2420 | /** |
| 2421 | * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame |
| 2422 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2423 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2424 | * @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] | 2425 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2426 | * |
| 2427 | * If the CTS-to-self is generated in firmware, but the host system must provide |
| 2428 | * the duration field, the low-level driver uses this function to receive |
| 2429 | * the duration field value in little-endian byteorder. |
| 2430 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2431 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 2432 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2433 | size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2434 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2435 | |
| 2436 | /** |
| 2437 | * ieee80211_generic_frame_duration - Calculate the duration field for a frame |
| 2438 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2439 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2440 | * @frame_len: the length of the frame. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2441 | * @rate: the rate at which the frame is going to be transmitted. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2442 | * |
| 2443 | * Calculate the duration field of some generic frame, given its |
| 2444 | * length and transmission rate (in 100kbps). |
| 2445 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2446 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 2447 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2448 | size_t frame_len, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2449 | struct ieee80211_rate *rate); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2450 | |
| 2451 | /** |
| 2452 | * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames |
| 2453 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2454 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2455 | * |
| 2456 | * Function for accessing buffered broadcast and multicast frames. If |
| 2457 | * hardware/firmware does not implement buffering of broadcast/multicast |
| 2458 | * frames when power saving is used, 802.11 code buffers them in the host |
| 2459 | * memory. The low-level driver uses this function to fetch next buffered |
| 2460 | * frame. In most cases, this is used when generating beacon frame. This |
| 2461 | * function returns a pointer to the next buffered skb or NULL if no more |
| 2462 | * buffered frames are available. |
| 2463 | * |
| 2464 | * Note: buffered frames are returned only after DTIM beacon frame was |
| 2465 | * generated with ieee80211_beacon_get() and the low-level driver must thus |
| 2466 | * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns |
| 2467 | * NULL if the previous generated beacon was not DTIM, so the low-level driver |
| 2468 | * does not need to check for DTIM beacons separately and should be able to |
| 2469 | * use common code for all beacons. |
| 2470 | */ |
| 2471 | struct sk_buff * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2472 | ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2473 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2474 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 2475 | * ieee80211_get_tkip_key - get a TKIP rc4 for skb |
| 2476 | * |
| 2477 | * This function computes a TKIP rc4 key for an skb. It computes |
| 2478 | * a phase 1 key if needed (iv16 wraps around). This function is to |
| 2479 | * be used by drivers which can do HW encryption but need to compute |
| 2480 | * to phase 1/2 key in SW. |
| 2481 | * |
| 2482 | * @keyconf: the parameter passed with the set key |
| 2483 | * @skb: the skb for which the key is needed |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2484 | * @type: TBD |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2485 | * @key: a buffer to which the key will be written |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 2486 | */ |
| 2487 | void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, |
| 2488 | struct sk_buff *skb, |
| 2489 | enum ieee80211_tkip_key_type type, u8 *key); |
| 2490 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2491 | * ieee80211_wake_queue - wake specific queue |
| 2492 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2493 | * @queue: queue number (counted from zero). |
| 2494 | * |
| 2495 | * Drivers should use this function instead of netif_wake_queue. |
| 2496 | */ |
| 2497 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); |
| 2498 | |
| 2499 | /** |
| 2500 | * ieee80211_stop_queue - stop specific queue |
| 2501 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2502 | * @queue: queue number (counted from zero). |
| 2503 | * |
| 2504 | * Drivers should use this function instead of netif_stop_queue. |
| 2505 | */ |
| 2506 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); |
| 2507 | |
| 2508 | /** |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 2509 | * ieee80211_queue_stopped - test status of the queue |
| 2510 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2511 | * @queue: queue number (counted from zero). |
| 2512 | * |
| 2513 | * Drivers should use this function instead of netif_stop_queue. |
| 2514 | */ |
| 2515 | |
| 2516 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); |
| 2517 | |
| 2518 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2519 | * ieee80211_stop_queues - stop all queues |
| 2520 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2521 | * |
| 2522 | * Drivers should use this function instead of netif_stop_queue. |
| 2523 | */ |
| 2524 | void ieee80211_stop_queues(struct ieee80211_hw *hw); |
| 2525 | |
| 2526 | /** |
| 2527 | * ieee80211_wake_queues - wake all queues |
| 2528 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2529 | * |
| 2530 | * Drivers should use this function instead of netif_wake_queue. |
| 2531 | */ |
| 2532 | void ieee80211_wake_queues(struct ieee80211_hw *hw); |
| 2533 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2534 | /** |
| 2535 | * ieee80211_scan_completed - completed hardware scan |
| 2536 | * |
| 2537 | * When hardware scan offload is used (i.e. the hw_scan() callback is |
| 2538 | * assigned) this function needs to be called by the driver to notify |
Johannes Berg | 8789d45 | 2010-08-26 13:30:26 +0200 | [diff] [blame] | 2539 | * mac80211 that the scan finished. This function can be called from |
| 2540 | * any context, including hardirq context. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2541 | * |
| 2542 | * @hw: the hardware that finished the scan |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2543 | * @aborted: set to true if scan was aborted |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2544 | */ |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2545 | void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2546 | |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2547 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2548 | * ieee80211_iterate_active_interfaces - iterate active interfaces |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2549 | * |
| 2550 | * This function iterates over the interfaces associated with a given |
| 2551 | * hardware that are currently active and calls the callback for them. |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 2552 | * This function allows the iterator function to sleep, when the iterator |
| 2553 | * function is atomic @ieee80211_iterate_active_interfaces_atomic can |
| 2554 | * be used. |
Felix Fietkau | 2944f45 | 2010-09-14 18:37:20 +0200 | [diff] [blame] | 2555 | * Does not iterate over a new interface during add_interface() |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2556 | * |
| 2557 | * @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] | 2558 | * @iterator: the iterator function to call |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2559 | * @data: first argument of the iterator function |
| 2560 | */ |
| 2561 | void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, |
| 2562 | void (*iterator)(void *data, u8 *mac, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2563 | struct ieee80211_vif *vif), |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2564 | void *data); |
| 2565 | |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2566 | /** |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 2567 | * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces |
| 2568 | * |
| 2569 | * This function iterates over the interfaces associated with a given |
| 2570 | * hardware that are currently active and calls the callback for them. |
| 2571 | * This function requires the iterator callback function to be atomic, |
| 2572 | * if that is not desired, use @ieee80211_iterate_active_interfaces instead. |
Felix Fietkau | 2944f45 | 2010-09-14 18:37:20 +0200 | [diff] [blame] | 2573 | * Does not iterate over a new interface during add_interface() |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 2574 | * |
| 2575 | * @hw: the hardware struct of which the interfaces should be iterated over |
| 2576 | * @iterator: the iterator function to call, cannot sleep |
| 2577 | * @data: first argument of the iterator function |
| 2578 | */ |
| 2579 | void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, |
| 2580 | void (*iterator)(void *data, |
| 2581 | u8 *mac, |
| 2582 | struct ieee80211_vif *vif), |
| 2583 | void *data); |
| 2584 | |
| 2585 | /** |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 2586 | * ieee80211_queue_work - add work onto the mac80211 workqueue |
| 2587 | * |
| 2588 | * Drivers and mac80211 use this to add work onto the mac80211 workqueue. |
| 2589 | * This helper ensures drivers are not queueing work when they should not be. |
| 2590 | * |
| 2591 | * @hw: the hardware struct for the interface we are adding work for |
| 2592 | * @work: the work we want to add onto the mac80211 workqueue |
| 2593 | */ |
| 2594 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); |
| 2595 | |
| 2596 | /** |
| 2597 | * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue |
| 2598 | * |
| 2599 | * Drivers and mac80211 use this to queue delayed work onto the mac80211 |
| 2600 | * workqueue. |
| 2601 | * |
| 2602 | * @hw: the hardware struct for the interface we are adding work for |
| 2603 | * @dwork: delayable work to queue onto the mac80211 workqueue |
| 2604 | * @delay: number of jiffies to wait before queueing |
| 2605 | */ |
| 2606 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, |
| 2607 | struct delayed_work *dwork, |
| 2608 | unsigned long delay); |
| 2609 | |
| 2610 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2611 | * ieee80211_start_tx_ba_session - Start a tx Block Ack session. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2612 | * @sta: the station for which to start a BA session |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2613 | * @tid: the TID to BA on. |
Sujith Manoharan | bd2ce6e | 2010-12-15 07:47:10 +0530 | [diff] [blame] | 2614 | * @timeout: session timeout value (in TUs) |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2615 | * |
| 2616 | * Return: success if addBA request was sent, failure otherwise |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2617 | * |
| 2618 | * Although mac80211/low level driver/user space application can estimate |
| 2619 | * the need to start aggregation on a certain RA/TID, the session level |
| 2620 | * will be managed by the mac80211. |
| 2621 | */ |
Sujith Manoharan | bd2ce6e | 2010-12-15 07:47:10 +0530 | [diff] [blame] | 2622 | int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid, |
| 2623 | u16 timeout); |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2624 | |
| 2625 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2626 | * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2627 | * @vif: &struct ieee80211_vif pointer from the add_interface callback |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2628 | * @ra: receiver address of the BA session recipient. |
| 2629 | * @tid: the TID to BA on. |
| 2630 | * |
| 2631 | * This function must be called by low level driver once it has |
Johannes Berg | 5d22c89 | 2010-06-10 10:21:40 +0200 | [diff] [blame] | 2632 | * finished with preparations for the BA session. It can be called |
| 2633 | * from any context. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2634 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2635 | void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2636 | u16 tid); |
| 2637 | |
| 2638 | /** |
| 2639 | * ieee80211_stop_tx_ba_session - Stop a Block Ack session. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2640 | * @sta: the station whose BA session to stop |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2641 | * @tid: the TID to stop BA. |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2642 | * |
Johannes Berg | 6a8579d | 2010-05-27 14:41:07 +0200 | [diff] [blame] | 2643 | * Return: negative error if the TID is invalid, or no aggregation active |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2644 | * |
| 2645 | * Although mac80211/low level driver/user space application can estimate |
| 2646 | * the need to stop aggregation on a certain RA/TID, the session level |
| 2647 | * will be managed by the mac80211. |
| 2648 | */ |
Johannes Berg | 6a8579d | 2010-05-27 14:41:07 +0200 | [diff] [blame] | 2649 | int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid); |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2650 | |
| 2651 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2652 | * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2653 | * @vif: &struct ieee80211_vif pointer from the add_interface callback |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2654 | * @ra: receiver address of the BA session recipient. |
| 2655 | * @tid: the desired TID to BA on. |
| 2656 | * |
| 2657 | * This function must be called by low level driver once it has |
Johannes Berg | 5d22c89 | 2010-06-10 10:21:40 +0200 | [diff] [blame] | 2658 | * finished with preparations for the BA session tear down. It |
| 2659 | * can be called from any context. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2660 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2661 | void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2662 | u16 tid); |
| 2663 | |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 2664 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2665 | * ieee80211_find_sta - find a station |
| 2666 | * |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2667 | * @vif: virtual interface to look for station on |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2668 | * @addr: station's address |
| 2669 | * |
| 2670 | * This function must be called under RCU lock and the |
| 2671 | * resulting pointer is only valid under RCU lock as well. |
| 2672 | */ |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2673 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2674 | const u8 *addr); |
| 2675 | |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2676 | /** |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 2677 | * ieee80211_find_sta_by_ifaddr - find a station on hardware |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2678 | * |
| 2679 | * @hw: pointer as obtained from ieee80211_alloc_hw() |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 2680 | * @addr: remote station's address |
| 2681 | * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'. |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2682 | * |
| 2683 | * This function must be called under RCU lock and the |
| 2684 | * resulting pointer is only valid under RCU lock as well. |
| 2685 | * |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 2686 | * NOTE: You may pass NULL for localaddr, but then you will just get |
| 2687 | * the first STA that matches the remote address 'addr'. |
| 2688 | * We can have multiple STA associated with multiple |
| 2689 | * logical stations (e.g. consider a station connecting to another |
| 2690 | * BSSID on the same AP hardware without disconnecting first). |
| 2691 | * In this case, the result of this method with localaddr NULL |
| 2692 | * is not reliable. |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2693 | * |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 2694 | * DO NOT USE THIS FUNCTION with localaddr NULL if at all possible. |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2695 | */ |
Ben Greear | 686b9cb | 2010-09-23 09:44:36 -0700 | [diff] [blame] | 2696 | struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw, |
| 2697 | const u8 *addr, |
| 2698 | const u8 *localaddr); |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2699 | |
| 2700 | /** |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 2701 | * ieee80211_sta_block_awake - block station from waking up |
| 2702 | * @hw: the hardware |
| 2703 | * @pubsta: the station |
| 2704 | * @block: whether to block or unblock |
| 2705 | * |
| 2706 | * Some devices require that all frames that are on the queues |
| 2707 | * for a specific station that went to sleep are flushed before |
| 2708 | * a poll response or frames after the station woke up can be |
| 2709 | * delivered to that it. Note that such frames must be rejected |
| 2710 | * by the driver as filtered, with the appropriate status flag. |
| 2711 | * |
| 2712 | * This function allows implementing this mode in a race-free |
| 2713 | * manner. |
| 2714 | * |
| 2715 | * To do this, a driver must keep track of the number of frames |
| 2716 | * still enqueued for a specific station. If this number is not |
| 2717 | * zero when the station goes to sleep, the driver must call |
| 2718 | * this function to force mac80211 to consider the station to |
| 2719 | * be asleep regardless of the station's actual state. Once the |
| 2720 | * number of outstanding frames reaches zero, the driver must |
| 2721 | * call this function again to unblock the station. That will |
| 2722 | * cause mac80211 to be able to send ps-poll responses, and if |
| 2723 | * the station queried in the meantime then frames will also |
| 2724 | * be sent out as a result of this. Additionally, the driver |
| 2725 | * will be notified that the station woke up some time after |
| 2726 | * it is unblocked, regardless of whether the station actually |
| 2727 | * woke up while blocked or not. |
| 2728 | */ |
| 2729 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
| 2730 | struct ieee80211_sta *pubsta, bool block); |
| 2731 | |
| 2732 | /** |
Juuso Oikarinen | a619a4c | 2010-11-11 08:50:18 +0200 | [diff] [blame] | 2733 | * ieee80211_ap_probereq_get - retrieve a Probe Request template |
| 2734 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 2735 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2736 | * |
| 2737 | * Creates a Probe Request template which can, for example, be uploaded to |
| 2738 | * hardware. The template is filled with bssid, ssid and supported rate |
| 2739 | * information. This function must only be called from within the |
| 2740 | * .bss_info_changed callback function and only in managed mode. The function |
| 2741 | * is only useful when the interface is associated, otherwise it will return |
| 2742 | * NULL. |
| 2743 | */ |
| 2744 | struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, |
| 2745 | struct ieee80211_vif *vif); |
| 2746 | |
| 2747 | /** |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2748 | * ieee80211_beacon_loss - inform hardware does not receive beacons |
| 2749 | * |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2750 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2751 | * |
Bob Copeland | 2738bd6 | 2010-08-21 16:39:01 -0400 | [diff] [blame] | 2752 | * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER and |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 2753 | * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2754 | * hardware is not receiving beacons with this function. |
| 2755 | */ |
| 2756 | void ieee80211_beacon_loss(struct ieee80211_vif *vif); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2757 | |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 2758 | /** |
| 2759 | * ieee80211_connection_loss - inform hardware has lost connection to the AP |
| 2760 | * |
| 2761 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2762 | * |
Bob Copeland | 2738bd6 | 2010-08-21 16:39:01 -0400 | [diff] [blame] | 2763 | * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTER, and |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 2764 | * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver |
| 2765 | * needs to inform if the connection to the AP has been lost. |
| 2766 | * |
| 2767 | * This function will cause immediate change to disassociated state, |
| 2768 | * without connection recovery attempts. |
| 2769 | */ |
| 2770 | void ieee80211_connection_loss(struct ieee80211_vif *vif); |
| 2771 | |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 2772 | /** |
Juuso Oikarinen | f90754c | 2010-06-21 08:59:39 +0300 | [diff] [blame] | 2773 | * ieee80211_disable_dyn_ps - force mac80211 to temporarily disable dynamic psm |
| 2774 | * |
| 2775 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2776 | * |
| 2777 | * Some hardware require full power save to manage simultaneous BT traffic |
| 2778 | * on the WLAN frequency. Full PSM is required periodically, whenever there are |
| 2779 | * burst of BT traffic. The hardware gets information of BT traffic via |
| 2780 | * hardware co-existence lines, and consequentially requests mac80211 to |
| 2781 | * (temporarily) enter full psm. |
| 2782 | * This function will only temporarily disable dynamic PS, not enable PSM if |
| 2783 | * it was not already enabled. |
| 2784 | * The driver must make sure to re-enable dynamic PS using |
| 2785 | * ieee80211_enable_dyn_ps() if the driver has disabled it. |
| 2786 | * |
| 2787 | */ |
| 2788 | void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif); |
| 2789 | |
| 2790 | /** |
| 2791 | * ieee80211_enable_dyn_ps - restore dynamic psm after being disabled |
| 2792 | * |
| 2793 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2794 | * |
| 2795 | * This function restores dynamic PS after being temporarily disabled via |
| 2796 | * ieee80211_disable_dyn_ps(). Each ieee80211_disable_dyn_ps() call must |
| 2797 | * be coupled with an eventual call to this function. |
| 2798 | * |
| 2799 | */ |
| 2800 | void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif); |
| 2801 | |
| 2802 | /** |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 2803 | * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring |
| 2804 | * rssi threshold triggered |
| 2805 | * |
| 2806 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2807 | * @rssi_event: the RSSI trigger event type |
| 2808 | * @gfp: context flags |
| 2809 | * |
| 2810 | * When the %IEEE80211_HW_SUPPORTS_CQM_RSSI is set, and a connection quality |
| 2811 | * monitoring is configured with an rssi threshold, the driver will inform |
| 2812 | * whenever the rssi level reaches the threshold. |
| 2813 | */ |
| 2814 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
| 2815 | enum nl80211_cqm_rssi_threshold_event rssi_event, |
| 2816 | gfp_t gfp); |
| 2817 | |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 2818 | /** |
| 2819 | * ieee80211_chswitch_done - Complete channel switch process |
| 2820 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2821 | * @success: make the channel switch successful or not |
| 2822 | * |
| 2823 | * Complete the channel switch post-process: set the new operational channel |
| 2824 | * and wake up the suspended queues. |
| 2825 | */ |
| 2826 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); |
| 2827 | |
Johannes Berg | d1f5b7a | 2010-08-05 17:05:55 +0200 | [diff] [blame] | 2828 | /** |
| 2829 | * ieee80211_request_smps - request SM PS transition |
| 2830 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Johannes Berg | 633dd1e | 2010-08-18 15:01:23 +0200 | [diff] [blame] | 2831 | * @smps_mode: new SM PS mode |
Johannes Berg | d1f5b7a | 2010-08-05 17:05:55 +0200 | [diff] [blame] | 2832 | * |
| 2833 | * This allows the driver to request an SM PS transition in managed |
| 2834 | * mode. This is useful when the driver has more information than |
| 2835 | * the stack about possible interference, for example by bluetooth. |
| 2836 | */ |
| 2837 | void ieee80211_request_smps(struct ieee80211_vif *vif, |
| 2838 | enum ieee80211_smps_mode smps_mode); |
| 2839 | |
Johannes Berg | e31b821 | 2010-10-05 19:39:30 +0200 | [diff] [blame] | 2840 | /** |
| 2841 | * ieee80211_key_removed - disable hw acceleration for key |
| 2842 | * @key_conf: The key hw acceleration should be disabled for |
| 2843 | * |
| 2844 | * This allows drivers to indicate that the given key has been |
| 2845 | * removed from hardware acceleration, due to a new key that |
| 2846 | * was added. Don't use this if the key can continue to be used |
| 2847 | * for TX, if the key restriction is on RX only it is permitted |
| 2848 | * to keep the key for TX only and not call this function. |
| 2849 | * |
| 2850 | * Due to locking constraints, it may only be called during |
| 2851 | * @set_key. This function must be allowed to sleep, and the |
| 2852 | * key it tries to disable may still be used until it returns. |
| 2853 | */ |
| 2854 | void ieee80211_key_removed(struct ieee80211_key_conf *key_conf); |
| 2855 | |
Johannes Berg | 21f8358 | 2010-12-18 17:20:47 +0100 | [diff] [blame] | 2856 | /** |
| 2857 | * ieee80211_ready_on_channel - notification of remain-on-channel start |
| 2858 | * @hw: pointer as obtained from ieee80211_alloc_hw() |
| 2859 | */ |
| 2860 | void ieee80211_ready_on_channel(struct ieee80211_hw *hw); |
| 2861 | |
| 2862 | /** |
| 2863 | * ieee80211_remain_on_channel_expired - remain_on_channel duration expired |
| 2864 | * @hw: pointer as obtained from ieee80211_alloc_hw() |
| 2865 | */ |
| 2866 | void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw); |
| 2867 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2868 | /* Rate control API */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2869 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2870 | /** |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 2871 | * enum rate_control_changed - flags to indicate which parameter changed |
| 2872 | * |
| 2873 | * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have |
| 2874 | * changed, rate control algorithm can update its internal state if needed. |
| 2875 | */ |
| 2876 | enum rate_control_changed { |
| 2877 | IEEE80211_RC_HT_CHANGED = BIT(0) |
| 2878 | }; |
| 2879 | |
| 2880 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2881 | * struct ieee80211_tx_rate_control - rate control information for/from RC algo |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2882 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2883 | * @hw: The hardware the algorithm is invoked for. |
| 2884 | * @sband: The band this frame is being transmitted on. |
| 2885 | * @bss_conf: the current BSS configuration |
| 2886 | * @reported_rate: The rate control algorithm can fill this in to indicate |
| 2887 | * which rate should be reported to userspace as the current rate and |
| 2888 | * used for rate calculations in the mesh network. |
| 2889 | * @rts: whether RTS will be used for this frame because it is longer than the |
| 2890 | * RTS threshold |
| 2891 | * @short_preamble: whether mac80211 will request short-preamble transmission |
| 2892 | * if the selected rate supports it |
| 2893 | * @max_rate_idx: user-requested maximum rate (not MCS for now) |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 2894 | * (deprecated; this will be removed once drivers get updated to use |
| 2895 | * rate_idx_mask) |
| 2896 | * @rate_idx_mask: user-requested rate mask (not MCS for now) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 2897 | * @skb: the skb that will be transmitted, the control information in it needs |
| 2898 | * to be filled in |
Felix Fietkau | 8f0729b | 2010-11-11 15:07:23 +0100 | [diff] [blame] | 2899 | * @bss: whether this frame is sent out in AP or IBSS mode |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2900 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2901 | struct ieee80211_tx_rate_control { |
| 2902 | struct ieee80211_hw *hw; |
| 2903 | struct ieee80211_supported_band *sband; |
| 2904 | struct ieee80211_bss_conf *bss_conf; |
| 2905 | struct sk_buff *skb; |
| 2906 | struct ieee80211_tx_rate reported_rate; |
| 2907 | bool rts, short_preamble; |
| 2908 | u8 max_rate_idx; |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 2909 | u32 rate_idx_mask; |
Felix Fietkau | 8f0729b | 2010-11-11 15:07:23 +0100 | [diff] [blame] | 2910 | bool bss; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2911 | }; |
| 2912 | |
| 2913 | struct rate_control_ops { |
| 2914 | struct module *module; |
| 2915 | const char *name; |
| 2916 | void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2917 | void (*free)(void *priv); |
| 2918 | |
| 2919 | void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); |
| 2920 | void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, |
| 2921 | struct ieee80211_sta *sta, void *priv_sta); |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 2922 | void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, |
| 2923 | struct ieee80211_sta *sta, |
Sujith | 4fa0043 | 2010-03-01 14:42:57 +0530 | [diff] [blame] | 2924 | void *priv_sta, u32 changed, |
| 2925 | enum nl80211_channel_type oper_chan_type); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2926 | void (*free_sta)(void *priv, struct ieee80211_sta *sta, |
| 2927 | void *priv_sta); |
| 2928 | |
| 2929 | void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, |
| 2930 | struct ieee80211_sta *sta, void *priv_sta, |
| 2931 | struct sk_buff *skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2932 | void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, |
| 2933 | struct ieee80211_tx_rate_control *txrc); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2934 | |
| 2935 | void (*add_sta_debugfs)(void *priv, void *priv_sta, |
| 2936 | struct dentry *dir); |
| 2937 | void (*remove_sta_debugfs)(void *priv, void *priv_sta); |
| 2938 | }; |
| 2939 | |
| 2940 | static inline int rate_supported(struct ieee80211_sta *sta, |
| 2941 | enum ieee80211_band band, |
| 2942 | int index) |
| 2943 | { |
| 2944 | return (sta == NULL || sta->supp_rates[band] & BIT(index)); |
| 2945 | } |
| 2946 | |
Luis R. Rodriguez | 4c6d4f5 | 2009-07-16 10:05:41 -0700 | [diff] [blame] | 2947 | /** |
| 2948 | * rate_control_send_low - helper for drivers for management/no-ack frames |
| 2949 | * |
| 2950 | * Rate control algorithms that agree to use the lowest rate to |
| 2951 | * send management frames and NO_ACK data with the respective hw |
| 2952 | * retries should use this in the beginning of their mac80211 get_rate |
| 2953 | * callback. If true is returned the rate control can simply return. |
| 2954 | * If false is returned we guarantee that sta and sta and priv_sta is |
| 2955 | * not null. |
| 2956 | * |
| 2957 | * Rate control algorithms wishing to do more intelligent selection of |
| 2958 | * rate for multicast/broadcast frames may choose to not use this. |
| 2959 | * |
| 2960 | * @sta: &struct ieee80211_sta pointer to the target destination. Note |
| 2961 | * that this may be null. |
| 2962 | * @priv_sta: private rate control structure. This may be null. |
| 2963 | * @txrc: rate control information we sholud populate for mac80211. |
| 2964 | */ |
| 2965 | bool rate_control_send_low(struct ieee80211_sta *sta, |
| 2966 | void *priv_sta, |
| 2967 | struct ieee80211_tx_rate_control *txrc); |
| 2968 | |
| 2969 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2970 | static inline s8 |
| 2971 | rate_lowest_index(struct ieee80211_supported_band *sband, |
| 2972 | struct ieee80211_sta *sta) |
| 2973 | { |
| 2974 | int i; |
| 2975 | |
| 2976 | for (i = 0; i < sband->n_bitrates; i++) |
| 2977 | if (rate_supported(sta, sband->band, i)) |
| 2978 | return i; |
| 2979 | |
| 2980 | /* warn when we cannot find a rate. */ |
| 2981 | WARN_ON(1); |
| 2982 | |
| 2983 | return 0; |
| 2984 | } |
| 2985 | |
Luis R. Rodriguez | b770b43 | 2009-07-16 10:15:09 -0700 | [diff] [blame] | 2986 | static inline |
| 2987 | bool rate_usable_index_exists(struct ieee80211_supported_band *sband, |
| 2988 | struct ieee80211_sta *sta) |
| 2989 | { |
| 2990 | unsigned int i; |
| 2991 | |
| 2992 | for (i = 0; i < sband->n_bitrates; i++) |
| 2993 | if (rate_supported(sta, sband->band, i)) |
| 2994 | return true; |
| 2995 | return false; |
| 2996 | } |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2997 | |
| 2998 | int ieee80211_rate_control_register(struct rate_control_ops *ops); |
| 2999 | void ieee80211_rate_control_unregister(struct rate_control_ops *ops); |
| 3000 | |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 3001 | static inline bool |
| 3002 | conf_is_ht20(struct ieee80211_conf *conf) |
| 3003 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 3004 | return conf->channel_type == NL80211_CHAN_HT20; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 3005 | } |
| 3006 | |
| 3007 | static inline bool |
| 3008 | conf_is_ht40_minus(struct ieee80211_conf *conf) |
| 3009 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 3010 | return conf->channel_type == NL80211_CHAN_HT40MINUS; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 3011 | } |
| 3012 | |
| 3013 | static inline bool |
| 3014 | conf_is_ht40_plus(struct ieee80211_conf *conf) |
| 3015 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 3016 | return conf->channel_type == NL80211_CHAN_HT40PLUS; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 3017 | } |
| 3018 | |
| 3019 | static inline bool |
| 3020 | conf_is_ht40(struct ieee80211_conf *conf) |
| 3021 | { |
| 3022 | return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); |
| 3023 | } |
| 3024 | |
| 3025 | static inline bool |
| 3026 | conf_is_ht(struct ieee80211_conf *conf) |
| 3027 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 3028 | return conf->channel_type != NL80211_CHAN_NO_HT; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 3029 | } |
| 3030 | |
Johannes Berg | 2ca27bc | 2010-09-16 14:58:23 +0200 | [diff] [blame] | 3031 | static inline enum nl80211_iftype |
| 3032 | ieee80211_iftype_p2p(enum nl80211_iftype type, bool p2p) |
| 3033 | { |
| 3034 | if (p2p) { |
| 3035 | switch (type) { |
| 3036 | case NL80211_IFTYPE_STATION: |
| 3037 | return NL80211_IFTYPE_P2P_CLIENT; |
| 3038 | case NL80211_IFTYPE_AP: |
| 3039 | return NL80211_IFTYPE_P2P_GO; |
| 3040 | default: |
| 3041 | break; |
| 3042 | } |
| 3043 | } |
| 3044 | return type; |
| 3045 | } |
| 3046 | |
| 3047 | static inline enum nl80211_iftype |
| 3048 | ieee80211_vif_type_p2p(struct ieee80211_vif *vif) |
| 3049 | { |
| 3050 | return ieee80211_iftype_p2p(vif->type, vif->p2p); |
| 3051 | } |
| 3052 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 3053 | #endif /* MAC80211_H */ |