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 | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 100 | * struct ieee80211_tx_queue_params - transmit queue configuration |
| 101 | * |
| 102 | * The information provided in this structure is required for QoS |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 103 | * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 104 | * |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 105 | * @aifs: arbitration interframe space [0..255] |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 106 | * @cw_min: minimum contention window [a value of the form |
| 107 | * 2^n-1 in the range 1..32767] |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 108 | * @cw_max: maximum contention window [like @cw_min] |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 109 | * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled |
Kalle Valo | 9d173fc | 2010-01-14 13:09:14 +0200 | [diff] [blame] | 110 | * @uapsd: is U-APSD mode enabled for the queue |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 111 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 112 | struct ieee80211_tx_queue_params { |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 113 | u16 txop; |
Johannes Berg | 3330d7b | 2008-02-10 16:49:38 +0100 | [diff] [blame] | 114 | u16 cw_min; |
| 115 | u16 cw_max; |
Johannes Berg | f434b2d | 2008-07-10 11:22:31 +0200 | [diff] [blame] | 116 | u8 aifs; |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 117 | bool uapsd; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 118 | }; |
| 119 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 120 | struct ieee80211_low_level_stats { |
| 121 | unsigned int dot11ACKFailureCount; |
| 122 | unsigned int dot11RTSFailureCount; |
| 123 | unsigned int dot11FCSErrorCount; |
| 124 | unsigned int dot11RTSSuccessCount; |
| 125 | }; |
| 126 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 127 | /** |
| 128 | * enum ieee80211_bss_change - BSS change notification flags |
| 129 | * |
| 130 | * These flags are used with the bss_info_changed() callback |
| 131 | * to indicate which BSS parameter changed. |
| 132 | * |
| 133 | * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), |
| 134 | * also implies a change in the AID. |
| 135 | * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed |
| 136 | * @BSS_CHANGED_ERP_PREAMBLE: preamble changed |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 137 | * @BSS_CHANGED_ERP_SLOT: slot timing changed |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 138 | * @BSS_CHANGED_HT: 802.11n parameters changed |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 139 | * @BSS_CHANGED_BASIC_RATES: Basic rateset changed |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 140 | * @BSS_CHANGED_BEACON_INT: Beacon interval changed |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 141 | * @BSS_CHANGED_BSSID: BSSID changed, for whatever |
| 142 | * reason (IBSS and managed mode) |
| 143 | * @BSS_CHANGED_BEACON: Beacon data changed, retrieve |
| 144 | * new beacon (beaconing modes) |
| 145 | * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be |
| 146 | * enabled/disabled (beaconing modes) |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 147 | * @BSS_CHANGED_CQM: Connection quality monitor config changed |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 148 | * @BSS_CHANGED_IBSS: IBSS join status changed |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 149 | * @BSS_CHANGED_ARP_FILTER: Hardware ARP filter address list or state changed. |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 150 | * @BSS_CHANGED_QOS: QoS for this association was enabled/disabled. Note |
| 151 | * that it is only ever disabled for station mode. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 152 | */ |
| 153 | enum ieee80211_bss_change { |
| 154 | BSS_CHANGED_ASSOC = 1<<0, |
| 155 | BSS_CHANGED_ERP_CTS_PROT = 1<<1, |
| 156 | BSS_CHANGED_ERP_PREAMBLE = 1<<2, |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 157 | BSS_CHANGED_ERP_SLOT = 1<<3, |
Tomas Winkler | 38668c0 | 2008-03-28 16:33:32 -0700 | [diff] [blame] | 158 | BSS_CHANGED_HT = 1<<4, |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 159 | BSS_CHANGED_BASIC_RATES = 1<<5, |
Johannes Berg | 57c4d7b | 2009-04-23 16:10:04 +0200 | [diff] [blame] | 160 | BSS_CHANGED_BEACON_INT = 1<<6, |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 161 | BSS_CHANGED_BSSID = 1<<7, |
| 162 | BSS_CHANGED_BEACON = 1<<8, |
| 163 | BSS_CHANGED_BEACON_ENABLED = 1<<9, |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 164 | BSS_CHANGED_CQM = 1<<10, |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 165 | BSS_CHANGED_IBSS = 1<<11, |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 166 | BSS_CHANGED_ARP_FILTER = 1<<12, |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 167 | BSS_CHANGED_QOS = 1<<13, |
Johannes Berg | ac8dd50 | 2010-05-05 09:44:02 +0200 | [diff] [blame] | 168 | |
| 169 | /* when adding here, make sure to change ieee80211_reconfig */ |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 170 | }; |
| 171 | |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 172 | /* |
| 173 | * The maximum number of IPv4 addresses listed for ARP filtering. If the number |
| 174 | * of addresses for an interface increase beyond this value, hardware ARP |
| 175 | * filtering will be disabled. |
| 176 | */ |
| 177 | #define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4 |
| 178 | |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 179 | /** |
| 180 | * struct ieee80211_bss_conf - holds the BSS's changing parameters |
| 181 | * |
| 182 | * This structure keeps information about a BSS (and an association |
| 183 | * to that BSS) that can change during the lifetime of the BSS. |
| 184 | * |
| 185 | * @assoc: association status |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 186 | * @ibss_joined: indicates whether this station is part of an IBSS |
| 187 | * or not |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 188 | * @aid: association ID number, valid only when @assoc is true |
| 189 | * @use_cts_prot: use CTS protection |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 190 | * @use_short_preamble: use 802.11b short preamble; |
| 191 | * if the hardware cannot handle this it must set the |
| 192 | * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag |
| 193 | * @use_short_slot: use short slot time (only relevant for ERP); |
| 194 | * if the hardware cannot handle this it must set the |
| 195 | * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag |
Johannes Berg | 56007a0 | 2010-01-26 14:19:52 +0100 | [diff] [blame] | 196 | * @dtim_period: num of beacons before the next DTIM, for beaconing, |
Johannes Berg | e5b900d | 2010-07-29 16:08:55 +0200 | [diff] [blame] | 197 | * valid in station mode only while @assoc is true and if also |
| 198 | * requested by %IEEE80211_HW_NEED_DTIM_PERIOD (cf. also hw conf |
| 199 | * @ps_dtim_period) |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 200 | * @timestamp: beacon timestamp |
| 201 | * @beacon_int: beacon interval |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 202 | * @assoc_capability: capabilities taken from assoc resp |
Johannes Berg | 96dd22a | 2008-09-11 00:01:57 +0200 | [diff] [blame] | 203 | * @basic_rates: bitmap of basic rates, each bit stands for an |
| 204 | * index into the rate table configured by the driver in |
| 205 | * the current band. |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 206 | * @bssid: The BSSID for this BSS |
| 207 | * @enable_beacon: whether beaconing should be enabled or not |
Johannes Berg | 0aaffa9 | 2010-05-05 15:28:27 +0200 | [diff] [blame] | 208 | * @channel_type: Channel type for this BSS -- the hardware might be |
| 209 | * configured for HT40+ while this BSS only uses no-HT, for |
| 210 | * example. |
Johannes Berg | 9ed6bcc | 2009-05-08 20:47:39 +0200 | [diff] [blame] | 211 | * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info). |
| 212 | * 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] | 213 | * @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value |
| 214 | * implies disabled |
| 215 | * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 216 | * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The |
| 217 | * may filter ARP queries targeted for other addresses than listed here. |
| 218 | * The driver must allow ARP queries targeted for all address listed here |
| 219 | * to pass through. An empty list implies no ARP queries need to pass. |
| 220 | * @arp_addr_cnt: Number of addresses currently on the list. |
| 221 | * @arp_filter_enabled: Enable ARP filtering - if enabled, the hardware may |
| 222 | * filter ARP queries based on the @arp_addr_list, if disabled, the |
| 223 | * hardware must not perform any ARP filtering. Note, that the filter will |
| 224 | * be enabled also in promiscuous mode. |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 225 | * @qos: This is a QoS-enabled BSS. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 226 | */ |
| 227 | struct ieee80211_bss_conf { |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 228 | const u8 *bssid; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 229 | /* association related data */ |
Johannes Berg | 8fc214b | 2010-04-28 17:40:43 +0200 | [diff] [blame] | 230 | bool assoc, ibss_joined; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 231 | u16 aid; |
| 232 | /* erp related data */ |
| 233 | bool use_cts_prot; |
| 234 | bool use_short_preamble; |
Jouni Malinen | 9f1ba90 | 2008-08-07 20:07:01 +0300 | [diff] [blame] | 235 | bool use_short_slot; |
Johannes Berg | 2d0ddec | 2009-04-23 16:13:26 +0200 | [diff] [blame] | 236 | bool enable_beacon; |
Emmanuel Grumbach | 98f7dfd | 2008-07-18 13:52:59 +0800 | [diff] [blame] | 237 | u8 dtim_period; |
Tomas Winkler | 21c0cbe | 2008-03-28 16:33:34 -0700 | [diff] [blame] | 238 | u16 beacon_int; |
| 239 | u16 assoc_capability; |
| 240 | u64 timestamp; |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 241 | u32 basic_rates; |
Johannes Berg | 9ed6bcc | 2009-05-08 20:47:39 +0200 | [diff] [blame] | 242 | u16 ht_operation_mode; |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 243 | s32 cqm_rssi_thold; |
| 244 | u32 cqm_rssi_hyst; |
Johannes Berg | 0aaffa9 | 2010-05-05 15:28:27 +0200 | [diff] [blame] | 245 | enum nl80211_channel_type channel_type; |
Juuso Oikarinen | 6854296 | 2010-06-09 13:43:26 +0300 | [diff] [blame] | 246 | __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; |
| 247 | u8 arp_addr_cnt; |
| 248 | bool arp_filter_enabled; |
Johannes Berg | 4ced3f7 | 2010-07-19 16:39:04 +0200 | [diff] [blame] | 249 | bool qos; |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 250 | }; |
| 251 | |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 252 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 253 | * enum mac80211_tx_control_flags - flags to describe transmission information/status |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 254 | * |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 255 | * These flags are used with the @flags member of &ieee80211_tx_info. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 256 | * |
Johannes Berg | 7351c6b | 2009-11-19 01:08:30 +0100 | [diff] [blame] | 257 | * @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] | 258 | * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence |
| 259 | * number to this frame, taking care of not overwriting the fragment |
| 260 | * number and increasing the sequence number only when the |
| 261 | * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly |
| 262 | * assign sequence numbers to QoS-data frames but cannot do so correctly |
| 263 | * for non-QoS-data and management frames because beacons need them from |
| 264 | * that counter as well and mac80211 cannot guarantee proper sequencing. |
| 265 | * If this flag is set, the driver should instruct the hardware to |
| 266 | * assign a sequence number to the frame or assign one itself. Cf. IEEE |
| 267 | * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for |
| 268 | * beacons and always be clear for frames without a sequence number field. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 269 | * @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] | 270 | * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination |
| 271 | * station |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 272 | * @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] | 273 | * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon |
| 274 | * @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] | 275 | * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 276 | * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted |
Johannes Berg | ab5b534 | 2009-08-07 16:28:09 +0200 | [diff] [blame] | 277 | * because the destination STA was in powersave mode. Note that to |
| 278 | * avoid race conditions, the filter must be set by the hardware or |
| 279 | * firmware upon receiving a frame that indicates that the station |
| 280 | * went to sleep (must be done on device to filter frames already on |
| 281 | * the queue) and may only be unset after mac80211 gives the OK for |
| 282 | * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), |
| 283 | * since only then is it guaranteed that no more frames are in the |
| 284 | * hardware queue. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 285 | * @IEEE80211_TX_STAT_ACK: Frame was acknowledged |
| 286 | * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status |
| 287 | * is for the whole aggregation. |
Ron Rindjunsky | 429a380 | 2008-07-01 14:16:03 +0300 | [diff] [blame] | 288 | * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, |
| 289 | * so consider using block ack request (BAR). |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 290 | * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be |
| 291 | * set by rate control algorithms to indicate probe rate, will |
| 292 | * be cleared for fragmented frames (except on the last fragment) |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 293 | * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, |
| 294 | * used to indicate that a pending frame requires TX processing before |
| 295 | * it can be sent out. |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 296 | * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, |
| 297 | * used to indicate that a frame was already retried due to PS |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 298 | * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, |
| 299 | * used to indicate frame should not be encrypted |
Johannes Berg | 3fa5205 | 2009-07-24 13:23:09 +0200 | [diff] [blame] | 300 | * @IEEE80211_TX_CTL_PSPOLL_RESPONSE: (internal?) |
| 301 | * This frame is a response to a PS-poll frame and should be sent |
| 302 | * although the station is in powersave mode. |
Johannes Berg | ad5351d | 2009-08-07 16:42:15 +0200 | [diff] [blame] | 303 | * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the |
| 304 | * transmit function after the current frame, this can be used |
| 305 | * by drivers to kick the DMA queue only if unset or when the |
| 306 | * queue gets full. |
Johannes Berg | c6fcf6b | 2010-01-17 01:47:59 +0100 | [diff] [blame] | 307 | * @IEEE80211_TX_INTFL_RETRANSMISSION: This frame is being retransmitted |
| 308 | * after TX status because the destination was asleep, it must not |
| 309 | * be modified again (no seqno assignment, crypto, etc.) |
Felix Fietkau | 17ad353 | 2010-01-31 21:56:25 +0100 | [diff] [blame] | 310 | * @IEEE80211_TX_INTFL_HAS_RADIOTAP: This frame was injected and still |
| 311 | * has a radiotap header at skb->data. |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 312 | * @IEEE80211_TX_INTFL_NL80211_FRAME_TX: Frame was requested through nl80211 |
| 313 | * MLME command (internal to mac80211 to figure out whether to send TX |
| 314 | * status to user space) |
Luis R. Rodriguez | 0a56bd0 | 2010-04-15 17:39:37 -0400 | [diff] [blame] | 315 | * @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] | 316 | * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this |
| 317 | * frame and selects the maximum number of streams that it can use. |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 318 | */ |
| 319 | enum mac80211_tx_control_flags { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 320 | IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 321 | IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), |
| 322 | IEEE80211_TX_CTL_NO_ACK = BIT(2), |
| 323 | IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), |
| 324 | IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), |
| 325 | IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), |
| 326 | IEEE80211_TX_CTL_AMPDU = BIT(6), |
| 327 | IEEE80211_TX_CTL_INJECTED = BIT(7), |
| 328 | IEEE80211_TX_STAT_TX_FILTERED = BIT(8), |
| 329 | IEEE80211_TX_STAT_ACK = BIT(9), |
| 330 | IEEE80211_TX_STAT_AMPDU = BIT(10), |
| 331 | IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), |
| 332 | IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), |
Johannes Berg | cd8ffc8 | 2009-03-23 17:28:41 +0100 | [diff] [blame] | 333 | IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), |
Johannes Berg | 8f77f38 | 2009-06-07 21:58:37 +0200 | [diff] [blame] | 334 | IEEE80211_TX_INTFL_RETRIED = BIT(15), |
Johannes Berg | 3b8d81e0 | 2009-06-17 17:43:56 +0200 | [diff] [blame] | 335 | IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), |
Johannes Berg | 3fa5205 | 2009-07-24 13:23:09 +0200 | [diff] [blame] | 336 | IEEE80211_TX_CTL_PSPOLL_RESPONSE = BIT(17), |
Johannes Berg | ad5351d | 2009-08-07 16:42:15 +0200 | [diff] [blame] | 337 | IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), |
Johannes Berg | c6fcf6b | 2010-01-17 01:47:59 +0100 | [diff] [blame] | 338 | IEEE80211_TX_INTFL_RETRANSMISSION = BIT(19), |
Felix Fietkau | 17ad353 | 2010-01-31 21:56:25 +0100 | [diff] [blame] | 339 | IEEE80211_TX_INTFL_HAS_RADIOTAP = BIT(20), |
Jouni Malinen | 026331c | 2010-02-15 12:53:10 +0200 | [diff] [blame] | 340 | IEEE80211_TX_INTFL_NL80211_FRAME_TX = BIT(21), |
Luis R. Rodriguez | 0a56bd0 | 2010-04-15 17:39:37 -0400 | [diff] [blame] | 341 | IEEE80211_TX_CTL_LDPC = BIT(22), |
Felix Fietkau | f79d9ba | 2010-04-19 19:57:35 +0200 | [diff] [blame] | 342 | IEEE80211_TX_CTL_STBC = BIT(23) | BIT(24), |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 343 | }; |
| 344 | |
Johannes Berg | abe37c4 | 2010-06-07 11:12:27 +0200 | [diff] [blame] | 345 | #define IEEE80211_TX_CTL_STBC_SHIFT 23 |
| 346 | |
Sujith | 2134e7e | 2009-01-22 09:00:52 +0530 | [diff] [blame] | 347 | /** |
| 348 | * enum mac80211_rate_control_flags - per-rate flags set by the |
| 349 | * Rate Control algorithm. |
| 350 | * |
| 351 | * These flags are set by the Rate control algorithm for each rate during tx, |
| 352 | * in the @flags member of struct ieee80211_tx_rate. |
| 353 | * |
| 354 | * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. |
| 355 | * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. |
| 356 | * This is set if the current BSS requires ERP protection. |
| 357 | * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. |
| 358 | * @IEEE80211_TX_RC_MCS: HT rate. |
| 359 | * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in |
| 360 | * Greenfield mode. |
| 361 | * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. |
| 362 | * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the |
| 363 | * adjacent 20 MHz channels, if the current channel type is |
| 364 | * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. |
| 365 | * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. |
| 366 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 367 | enum mac80211_rate_control_flags { |
| 368 | IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), |
| 369 | IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), |
| 370 | IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), |
| 371 | |
| 372 | /* rate index is an MCS rate number instead of an index */ |
| 373 | IEEE80211_TX_RC_MCS = BIT(3), |
| 374 | IEEE80211_TX_RC_GREEN_FIELD = BIT(4), |
| 375 | IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), |
| 376 | IEEE80211_TX_RC_DUP_DATA = BIT(6), |
| 377 | IEEE80211_TX_RC_SHORT_GI = BIT(7), |
Ron Rindjunsky | 11f4b1c | 2008-03-04 18:09:26 -0800 | [diff] [blame] | 378 | }; |
| 379 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 380 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 381 | /* there are 40 bytes if you don't need the rateset to be kept */ |
| 382 | #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 383 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 384 | /* if you do need the rateset, then you have less space */ |
| 385 | #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 |
| 386 | |
| 387 | /* maximum number of rate stages */ |
| 388 | #define IEEE80211_TX_MAX_RATES 5 |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 389 | |
| 390 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 391 | * struct ieee80211_tx_rate - rate selection/status |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 392 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 393 | * @idx: rate index to attempt to send with |
| 394 | * @flags: rate control flags (&enum mac80211_rate_control_flags) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 395 | * @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] | 396 | * |
| 397 | * A value of -1 for @idx indicates an invalid rate and, if used |
| 398 | * in an array of retry rates, that no more rates should be tried. |
| 399 | * |
| 400 | * When used for transmit status reporting, the driver should |
| 401 | * always report the rate along with the flags it used. |
Johannes Berg | c555b9b | 2009-08-07 16:23:43 +0200 | [diff] [blame] | 402 | * |
| 403 | * &struct ieee80211_tx_info contains an array of these structs |
| 404 | * in the control information, and it will be filled by the rate |
| 405 | * control algorithm according to what should be sent. For example, |
| 406 | * if this array contains, in the format { <idx>, <count> } the |
| 407 | * information |
| 408 | * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } |
| 409 | * then this means that the frame should be transmitted |
| 410 | * up to twice at rate 3, up to twice at rate 2, and up to four |
| 411 | * times at rate 1 if it doesn't get acknowledged. Say it gets |
| 412 | * acknowledged by the peer after the fifth attempt, the status |
| 413 | * information should then contain |
| 414 | * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... |
| 415 | * since it was transmitted twice at rate 3, twice at rate 2 |
| 416 | * and once at rate 1 after which we received an acknowledgement. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 417 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 418 | struct ieee80211_tx_rate { |
| 419 | s8 idx; |
| 420 | u8 count; |
| 421 | u8 flags; |
Gustavo F. Padovan | 3f30fc1 | 2010-07-21 10:59:58 +0000 | [diff] [blame] | 422 | } __packed; |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 423 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 424 | /** |
| 425 | * struct ieee80211_tx_info - skb transmit information |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 426 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 427 | * This structure is placed in skb->cb for three uses: |
| 428 | * (1) mac80211 TX control - mac80211 tells the driver what to do |
| 429 | * (2) driver internal use (if applicable) |
| 430 | * (3) TX status information - driver tells mac80211 what happened |
| 431 | * |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 432 | * The TX control's sta pointer is only valid during the ->tx call, |
| 433 | * it may be NULL. |
| 434 | * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 435 | * @flags: transmit info flags, defined above |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 436 | * @band: the band to transmit on (use for checking for races) |
Johannes Berg | 0f4ac38 | 2008-10-09 12:18:04 +0200 | [diff] [blame] | 437 | * @antenna_sel_tx: antenna to use, 0 for automatic diversity |
Kalle Valo | 8bef7a1 | 2008-11-30 20:56:28 +0200 | [diff] [blame] | 438 | * @pad: padding, ignore |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 439 | * @control: union for control data |
| 440 | * @status: union for status data |
| 441 | * @driver_data: array of driver_data pointers |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 442 | * @ampdu_ack_len: number of acked aggregated frames. |
Daniel Halperin | 93d95b1 | 2010-04-18 09:28:18 -0700 | [diff] [blame] | 443 | * relevant only if IEEE80211_TX_STAT_AMPDU was set. |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 444 | * @ampdu_len: number of aggregated frames. |
Daniel Halperin | 93d95b1 | 2010-04-18 09:28:18 -0700 | [diff] [blame] | 445 | * relevant only if IEEE80211_TX_STAT_AMPDU was set. |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 446 | * @ack_signal: signal strength of the ACK frame |
Ivo van Doorn | 1c01442 | 2008-04-17 19:41:02 +0200 | [diff] [blame] | 447 | */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 448 | struct ieee80211_tx_info { |
| 449 | /* common information */ |
| 450 | u32 flags; |
| 451 | u8 band; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 452 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 453 | u8 antenna_sel_tx; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 454 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 455 | /* 2 byte hole */ |
John W. Linville | 6272710 | 2008-11-12 10:01:41 -0500 | [diff] [blame] | 456 | u8 pad[2]; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 457 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 458 | union { |
| 459 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 460 | union { |
| 461 | /* rate control */ |
| 462 | struct { |
| 463 | struct ieee80211_tx_rate rates[ |
| 464 | IEEE80211_TX_MAX_RATES]; |
| 465 | s8 rts_cts_rate_idx; |
| 466 | }; |
| 467 | /* only needed before rate control */ |
| 468 | unsigned long jiffies; |
| 469 | }; |
Johannes Berg | 25d834e | 2008-09-12 22:52:47 +0200 | [diff] [blame] | 470 | /* NB: vif can be NULL for injected frames */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 471 | struct ieee80211_vif *vif; |
| 472 | struct ieee80211_key_conf *hw_key; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 473 | struct ieee80211_sta *sta; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 474 | } control; |
| 475 | struct { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 476 | struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; |
| 477 | u8 ampdu_ack_len; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 478 | int ack_signal; |
Felix Fietkau | 599bf6a | 2009-11-15 23:07:30 +0100 | [diff] [blame] | 479 | u8 ampdu_len; |
Johannes Berg | 095dfdb | 2010-05-26 17:19:25 +0200 | [diff] [blame] | 480 | /* 15 bytes free */ |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 481 | } status; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 482 | struct { |
| 483 | struct ieee80211_tx_rate driver_rates[ |
| 484 | IEEE80211_TX_MAX_RATES]; |
| 485 | void *rate_driver_data[ |
| 486 | IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; |
| 487 | }; |
| 488 | void *driver_data[ |
| 489 | IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 490 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 491 | }; |
| 492 | |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 493 | static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) |
| 494 | { |
| 495 | return (struct ieee80211_tx_info *)skb->cb; |
| 496 | } |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 497 | |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 498 | static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) |
| 499 | { |
| 500 | return (struct ieee80211_rx_status *)skb->cb; |
| 501 | } |
| 502 | |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 503 | /** |
| 504 | * ieee80211_tx_info_clear_status - clear TX status |
| 505 | * |
| 506 | * @info: The &struct ieee80211_tx_info to be cleared. |
| 507 | * |
| 508 | * When the driver passes an skb back to mac80211, it must report |
| 509 | * a number of things in TX status. This function clears everything |
| 510 | * in the TX status but the rate control information (it does clear |
| 511 | * the count since you need to fill that in anyway). |
| 512 | * |
| 513 | * NOTE: You can only use this function if you do NOT use |
| 514 | * info->driver_data! Use info->rate_driver_data |
| 515 | * instead if you need only the less space that allows. |
| 516 | */ |
| 517 | static inline void |
| 518 | ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) |
| 519 | { |
| 520 | int i; |
| 521 | |
| 522 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 523 | offsetof(struct ieee80211_tx_info, control.rates)); |
| 524 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != |
| 525 | offsetof(struct ieee80211_tx_info, driver_rates)); |
| 526 | BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); |
| 527 | /* clear the rate counts */ |
| 528 | for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) |
| 529 | info->status.rates[i].count = 0; |
| 530 | |
| 531 | BUILD_BUG_ON( |
| 532 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); |
| 533 | memset(&info->status.ampdu_ack_len, 0, |
| 534 | sizeof(struct ieee80211_tx_info) - |
| 535 | offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); |
| 536 | } |
| 537 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 538 | |
| 539 | /** |
| 540 | * enum mac80211_rx_flags - receive flags |
| 541 | * |
| 542 | * These flags are used with the @flag member of &struct ieee80211_rx_status. |
| 543 | * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. |
| 544 | * Use together with %RX_FLAG_MMIC_STRIPPED. |
| 545 | * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 546 | * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, |
| 547 | * verification has been done by the hardware. |
| 548 | * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. |
| 549 | * If this flag is set, the stack cannot do any replay detection |
| 550 | * hence the driver or hardware will have to do that. |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 551 | * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on |
| 552 | * the frame. |
| 553 | * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on |
| 554 | * the frame. |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 555 | * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) |
Bruno Randolf | 9d9bf77 | 2008-02-18 11:21:36 +0900 | [diff] [blame] | 556 | * is valid. This is useful in monitor mode and necessary for beacon frames |
| 557 | * to enable IBSS merging. |
Bruno Randolf | b4f28bb | 2008-07-30 17:19:55 +0200 | [diff] [blame] | 558 | * @RX_FLAG_SHORTPRE: Short preamble was used for this frame |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 559 | * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index |
| 560 | * @RX_FLAG_40MHZ: HT40 (40 MHz) was used |
| 561 | * @RX_FLAG_SHORT_GI: Short guard interval was used |
Johannes Berg | 8c0c709 | 2009-11-25 17:46:15 +0100 | [diff] [blame] | 562 | * @RX_FLAG_INTERNAL_CMTR: set internally after frame was reported |
| 563 | * on cooked monitor to avoid double-reporting it for multiple |
| 564 | * virtual interfaces |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 565 | */ |
| 566 | enum mac80211_rx_flags { |
| 567 | RX_FLAG_MMIC_ERROR = 1<<0, |
| 568 | RX_FLAG_DECRYPTED = 1<<1, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 569 | RX_FLAG_MMIC_STRIPPED = 1<<3, |
| 570 | RX_FLAG_IV_STRIPPED = 1<<4, |
Johannes Berg | 72abd81 | 2007-09-17 01:29:22 -0400 | [diff] [blame] | 571 | RX_FLAG_FAILED_FCS_CRC = 1<<5, |
| 572 | RX_FLAG_FAILED_PLCP_CRC = 1<<6, |
Johannes Berg | c49e5ea | 2007-12-11 21:33:42 +0100 | [diff] [blame] | 573 | RX_FLAG_TSFT = 1<<7, |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 574 | RX_FLAG_SHORTPRE = 1<<8, |
| 575 | RX_FLAG_HT = 1<<9, |
| 576 | RX_FLAG_40MHZ = 1<<10, |
| 577 | RX_FLAG_SHORT_GI = 1<<11, |
Johannes Berg | 8c0c709 | 2009-11-25 17:46:15 +0100 | [diff] [blame] | 578 | RX_FLAG_INTERNAL_CMTR = 1<<12, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 579 | }; |
| 580 | |
| 581 | /** |
| 582 | * struct ieee80211_rx_status - receive status |
| 583 | * |
| 584 | * The low-level driver should provide this information (the subset |
| 585 | * supported by hardware) to the 802.11 code with each received |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 586 | * frame, in the skb's control buffer (cb). |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 587 | * |
Bruno Randolf | c132bec | 2008-02-18 11:20:51 +0900 | [diff] [blame] | 588 | * @mactime: value in microseconds of the 64-bit Time Synchronization Function |
| 589 | * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 590 | * @band: the active band when this frame was received |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 591 | * @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] | 592 | * @signal: signal strength when receiving this frame, either in dBm, in dB or |
| 593 | * unspecified depending on the hardware capabilities flags |
| 594 | * @IEEE80211_HW_SIGNAL_* |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 595 | * @antenna: antenna used |
Jouni Malinen | 0fb8ca4 | 2008-12-12 14:38:33 +0200 | [diff] [blame] | 596 | * @rate_idx: index of data rate into band's supported rates or MCS index if |
| 597 | * HT rates are use (RX_FLAG_HT) |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 598 | * @flag: %RX_FLAG_* |
| 599 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 600 | struct ieee80211_rx_status { |
| 601 | u64 mactime; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 602 | enum ieee80211_band band; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 603 | int freq; |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 604 | int signal; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 605 | int antenna; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 606 | int rate_idx; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 607 | int flag; |
| 608 | }; |
| 609 | |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 610 | /** |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 611 | * enum ieee80211_conf_flags - configuration flags |
| 612 | * |
| 613 | * Flags to define PHY configuration options |
| 614 | * |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 615 | * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this |
| 616 | * to determine for example whether to calculate timestamps for packets |
| 617 | * or not, do not use instead of filter flags! |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 618 | * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only). |
| 619 | * This is the power save mode defined by IEEE 802.11-2007 section 11.2, |
| 620 | * meaning that the hardware still wakes up for beacons, is able to |
| 621 | * transmit frames and receive the possible acknowledgment frames. |
| 622 | * Not to be confused with hardware specific wakeup/sleep states, |
| 623 | * driver is responsible for that. See the section "Powersave support" |
| 624 | * for more. |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 625 | * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set |
| 626 | * the driver should be prepared to handle configuration requests but |
| 627 | * may turn the device off as much as possible. Typically, this flag will |
| 628 | * be set when an interface is set UP but not associated or scanning, but |
| 629 | * 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] | 630 | * @IEEE80211_CONF_OFFCHANNEL: The device is currently not on its main |
| 631 | * operating channel. |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 632 | */ |
| 633 | enum ieee80211_conf_flags { |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 634 | IEEE80211_CONF_MONITOR = (1<<0), |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 635 | IEEE80211_CONF_PS = (1<<1), |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 636 | IEEE80211_CONF_IDLE = (1<<2), |
Felix Fietkau | 4552124 | 2010-07-28 02:40:49 +0200 | [diff] [blame] | 637 | IEEE80211_CONF_OFFCHANNEL = (1<<3), |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 638 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 639 | |
Johannes Berg | 7a5158e | 2008-10-08 10:59:33 +0200 | [diff] [blame] | 640 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 641 | /** |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 642 | * enum ieee80211_conf_changed - denotes which configuration changed |
| 643 | * |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 644 | * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 645 | * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed |
Johannes Berg | e255d5e | 2009-04-22 12:40:07 +0200 | [diff] [blame] | 646 | * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 647 | * @IEEE80211_CONF_CHANGE_POWER: the TX power changed |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 648 | * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 649 | * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 650 | * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 651 | * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 652 | */ |
| 653 | enum ieee80211_conf_changed { |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 654 | IEEE80211_CONF_CHANGE_SMPS = BIT(1), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 655 | IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), |
Johannes Berg | 0869aea | 2009-10-28 10:03:35 +0100 | [diff] [blame] | 656 | IEEE80211_CONF_CHANGE_MONITOR = BIT(3), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 657 | IEEE80211_CONF_CHANGE_PS = BIT(4), |
Johannes Berg | e255d5e | 2009-04-22 12:40:07 +0200 | [diff] [blame] | 658 | IEEE80211_CONF_CHANGE_POWER = BIT(5), |
| 659 | IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), |
| 660 | IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), |
Johannes Berg | 5cff20e | 2009-04-29 12:26:17 +0200 | [diff] [blame] | 661 | IEEE80211_CONF_CHANGE_IDLE = BIT(8), |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 662 | }; |
| 663 | |
| 664 | /** |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 665 | * enum ieee80211_smps_mode - spatial multiplexing power save mode |
| 666 | * |
Kalle Valo | 9d173fc | 2010-01-14 13:09:14 +0200 | [diff] [blame] | 667 | * @IEEE80211_SMPS_AUTOMATIC: automatic |
| 668 | * @IEEE80211_SMPS_OFF: off |
| 669 | * @IEEE80211_SMPS_STATIC: static |
| 670 | * @IEEE80211_SMPS_DYNAMIC: dynamic |
| 671 | * @IEEE80211_SMPS_NUM_MODES: internal, don't use |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 672 | */ |
| 673 | enum ieee80211_smps_mode { |
| 674 | IEEE80211_SMPS_AUTOMATIC, |
| 675 | IEEE80211_SMPS_OFF, |
| 676 | IEEE80211_SMPS_STATIC, |
| 677 | IEEE80211_SMPS_DYNAMIC, |
| 678 | |
| 679 | /* keep last */ |
| 680 | IEEE80211_SMPS_NUM_MODES, |
| 681 | }; |
| 682 | |
| 683 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 684 | * struct ieee80211_conf - configuration of the device |
| 685 | * |
| 686 | * This struct indicates how the driver shall configure the hardware. |
| 687 | * |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 688 | * @flags: configuration flags defined above |
| 689 | * |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 690 | * @listen_interval: listen interval in units of beacon interval |
Johannes Berg | 9ccebe6 | 2009-04-23 10:32:36 +0200 | [diff] [blame] | 691 | * @max_sleep_period: the maximum number of beacon intervals to sleep for |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 692 | * before checking the beacon for a TIM bit (managed mode only); this |
| 693 | * value will be only achievable between DTIM frames, the hardware |
| 694 | * needs to check for the multicast traffic bit in DTIM beacons. |
| 695 | * This variable is valid only when the CONF_PS flag is set. |
Johannes Berg | 56007a0 | 2010-01-26 14:19:52 +0100 | [diff] [blame] | 696 | * @ps_dtim_period: The DTIM period of the AP we're connected to, for use |
| 697 | * in power saving. Power saving will not be enabled until a beacon |
| 698 | * has been received and the DTIM period is known. |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 699 | * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the |
| 700 | * powersave documentation below. This variable is valid only when |
| 701 | * the CONF_PS flag is set. |
| 702 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 703 | * @power_level: requested transmit power (in dBm) |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 704 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 705 | * @channel: the channel to tune to |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 706 | * @channel_type: the channel (HT) type |
Johannes Berg | 04fe203 | 2009-04-22 18:44:37 +0200 | [diff] [blame] | 707 | * |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 708 | * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame |
| 709 | * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, |
| 710 | * but actually means the number of transmissions not the number of retries |
| 711 | * @short_frame_max_tx_count: Maximum number of transmissions for a "short" |
| 712 | * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the |
| 713 | * number of transmissions not the number of retries |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 714 | * |
| 715 | * @smps_mode: spatial multiplexing powersave mode; note that |
| 716 | * %IEEE80211_SMPS_STATIC is used when the device is not |
| 717 | * configured for an HT channel |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 718 | */ |
| 719 | struct ieee80211_conf { |
Johannes Berg | 6b301cd | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 720 | u32 flags; |
Juuso Oikarinen | ff61638 | 2010-06-09 09:51:52 +0300 | [diff] [blame] | 721 | int power_level, dynamic_ps_timeout; |
Johannes Berg | 9ccebe6 | 2009-04-23 10:32:36 +0200 | [diff] [blame] | 722 | int max_sleep_period; |
Ron Rindjunsky | 10816d4 | 2007-11-26 16:14:30 +0200 | [diff] [blame] | 723 | |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 724 | u16 listen_interval; |
Johannes Berg | 56007a0 | 2010-01-26 14:19:52 +0100 | [diff] [blame] | 725 | u8 ps_dtim_period; |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 726 | |
Johannes Berg | 9124b07 | 2008-10-14 19:17:54 +0200 | [diff] [blame] | 727 | u8 long_frame_max_tx_count, short_frame_max_tx_count; |
| 728 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 729 | struct ieee80211_channel *channel; |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 730 | enum nl80211_channel_type channel_type; |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 731 | enum ieee80211_smps_mode smps_mode; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 732 | }; |
| 733 | |
| 734 | /** |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 735 | * struct ieee80211_channel_switch - holds the channel switch data |
| 736 | * |
| 737 | * The information provided in this structure is required for channel switch |
| 738 | * operation. |
| 739 | * |
| 740 | * @timestamp: value in microseconds of the 64-bit Time Synchronization |
| 741 | * Function (TSF) timer when the frame containing the channel switch |
| 742 | * announcement was received. This is simply the rx.mactime parameter |
| 743 | * the driver passed into mac80211. |
| 744 | * @block_tx: Indicates whether transmission must be blocked before the |
| 745 | * scheduled channel switch, as indicated by the AP. |
| 746 | * @channel: the new channel to switch to |
| 747 | * @count: the number of TBTT's until the channel switch event |
| 748 | */ |
| 749 | struct ieee80211_channel_switch { |
| 750 | u64 timestamp; |
| 751 | bool block_tx; |
| 752 | struct ieee80211_channel *channel; |
| 753 | u8 count; |
| 754 | }; |
| 755 | |
| 756 | /** |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 757 | * struct ieee80211_vif - per-interface data |
| 758 | * |
| 759 | * Data in this structure is continually present for driver |
| 760 | * use during the life of a virtual interface. |
| 761 | * |
Johannes Berg | 51fb61e | 2007-12-19 01:31:27 +0100 | [diff] [blame] | 762 | * @type: type of this virtual interface |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 763 | * @bss_conf: BSS configuration for this interface, either our own |
| 764 | * or the BSS we're associated to |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 765 | * @addr: address of this interface |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 766 | * @drv_priv: data area for driver use, will always be aligned to |
| 767 | * sizeof(void *). |
| 768 | */ |
| 769 | struct ieee80211_vif { |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 770 | enum nl80211_iftype type; |
Johannes Berg | bda3933 | 2008-10-11 01:51:51 +0200 | [diff] [blame] | 771 | struct ieee80211_bss_conf bss_conf; |
Johannes Berg | 47846c9 | 2009-11-25 17:46:19 +0100 | [diff] [blame] | 772 | u8 addr[ETH_ALEN]; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 773 | /* must be last */ |
| 774 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 775 | }; |
| 776 | |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 777 | static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) |
| 778 | { |
| 779 | #ifdef CONFIG_MAC80211_MESH |
Johannes Berg | 05c914f | 2008-09-11 00:01:58 +0200 | [diff] [blame] | 780 | return vif->type == NL80211_IFTYPE_MESH_POINT; |
Johannes Berg | 902acc7 | 2008-02-23 15:17:19 +0100 | [diff] [blame] | 781 | #endif |
| 782 | return false; |
| 783 | } |
| 784 | |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 785 | /** |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 786 | * enum ieee80211_key_alg - key algorithm |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 787 | * @ALG_WEP: WEP40 or WEP104 |
| 788 | * @ALG_TKIP: TKIP |
| 789 | * @ALG_CCMP: CCMP (AES) |
Jouni Malinen | 3cfcf6ac | 2009-01-08 13:32:02 +0200 | [diff] [blame] | 790 | * @ALG_AES_CMAC: AES-128-CMAC |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 791 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 792 | enum ieee80211_key_alg { |
Johannes Berg | 8f20fc2 | 2007-08-28 17:01:54 -0400 | [diff] [blame] | 793 | ALG_WEP, |
| 794 | ALG_TKIP, |
| 795 | ALG_CCMP, |
Jouni Malinen | 3cfcf6ac | 2009-01-08 13:32:02 +0200 | [diff] [blame] | 796 | ALG_AES_CMAC, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 797 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 798 | |
Emmanuel Grumbach | 23976ef | 2008-06-28 02:50:13 +0300 | [diff] [blame] | 799 | /** |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 800 | * enum ieee80211_key_flags - key flags |
| 801 | * |
| 802 | * These flags are used for communication about keys between the driver |
| 803 | * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. |
| 804 | * |
| 805 | * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates |
| 806 | * that the STA this key will be used with could be using QoS. |
| 807 | * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the |
| 808 | * driver to indicate that it requires IV generation for this |
| 809 | * particular key. |
| 810 | * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by |
| 811 | * the driver for a TKIP key if it requires Michael MIC |
| 812 | * generation in software. |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 813 | * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates |
| 814 | * that the key is pairwise rather then a shared key. |
Jouni Malinen | 1f7d77a | 2009-01-08 13:32:10 +0200 | [diff] [blame] | 815 | * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a |
| 816 | * CCMP key if it requires CCMP encryption of management frames (MFP) to |
| 817 | * be done in software. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 818 | */ |
| 819 | enum ieee80211_key_flags { |
| 820 | IEEE80211_KEY_FLAG_WMM_STA = 1<<0, |
| 821 | IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, |
| 822 | IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, |
Ivo van Doorn | c6adbd2 | 2008-04-17 21:11:18 +0200 | [diff] [blame] | 823 | IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, |
Jouni Malinen | 1f7d77a | 2009-01-08 13:32:10 +0200 | [diff] [blame] | 824 | IEEE80211_KEY_FLAG_SW_MGMT = 1<<4, |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 825 | }; |
| 826 | |
| 827 | /** |
| 828 | * struct ieee80211_key_conf - key information |
| 829 | * |
| 830 | * This key information is given by mac80211 to the driver by |
| 831 | * the set_key() callback in &struct ieee80211_ops. |
| 832 | * |
| 833 | * @hw_key_idx: To be set by the driver, this is the key index the driver |
| 834 | * 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] | 835 | * encrypted in hardware. |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 836 | * @alg: The key algorithm. |
| 837 | * @flags: key flags, see &enum ieee80211_key_flags. |
| 838 | * @keyidx: the key index (0-3) |
| 839 | * @keylen: key material length |
Luis R. Rodriguez | ffd7891 | 2008-06-21 10:02:46 -0400 | [diff] [blame] | 840 | * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) |
| 841 | * data block: |
| 842 | * - Temporal Encryption Key (128 bits) |
| 843 | * - Temporal Authenticator Tx MIC Key (64 bits) |
| 844 | * - Temporal Authenticator Rx MIC Key (64 bits) |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 845 | * @icv_len: The ICV length for this key type |
| 846 | * @iv_len: The IV length for this key type |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 847 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 848 | struct ieee80211_key_conf { |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 849 | enum ieee80211_key_alg alg; |
Felix Fietkau | 76708de | 2008-10-05 18:02:48 +0200 | [diff] [blame] | 850 | u8 icv_len; |
| 851 | u8 iv_len; |
Johannes Berg | 6a7664d | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 852 | u8 hw_key_idx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 853 | u8 flags; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 854 | s8 keyidx; |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 855 | u8 keylen; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 856 | u8 key[0]; |
| 857 | }; |
| 858 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 859 | /** |
| 860 | * enum set_key_cmd - key command |
| 861 | * |
| 862 | * Used with the set_key() callback in &struct ieee80211_ops, this |
| 863 | * indicates whether a key is being removed or added. |
| 864 | * |
| 865 | * @SET_KEY: a key is set |
| 866 | * @DISABLE_KEY: a key must be disabled |
| 867 | */ |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 868 | enum set_key_cmd { |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 869 | SET_KEY, DISABLE_KEY, |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 870 | }; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 871 | |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 872 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 873 | * struct ieee80211_sta - station table entry |
| 874 | * |
| 875 | * A station table entry represents a station we are possibly |
| 876 | * communicating with. Since stations are RCU-managed in |
| 877 | * mac80211, any ieee80211_sta pointer you get access to must |
| 878 | * either be protected by rcu_read_lock() explicitly or implicitly, |
| 879 | * 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] | 880 | * call to your sta_remove callback that removed it. |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 881 | * |
| 882 | * @addr: MAC address |
| 883 | * @aid: AID we assigned to the station if we're an AP |
Johannes Berg | 323ce79 | 2008-09-11 02:45:11 +0200 | [diff] [blame] | 884 | * @supp_rates: Bitmap of supported rates (per band) |
Johannes Berg | ae5eb02 | 2008-10-14 16:58:37 +0200 | [diff] [blame] | 885 | * @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] | 886 | * @drv_priv: data area for driver use, will always be aligned to |
| 887 | * sizeof(void *), size is determined in hw information. |
| 888 | */ |
| 889 | struct ieee80211_sta { |
Johannes Berg | 881d948 | 2009-01-21 15:13:48 +0100 | [diff] [blame] | 890 | u32 supp_rates[IEEE80211_NUM_BANDS]; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 891 | u8 addr[ETH_ALEN]; |
| 892 | u16 aid; |
Johannes Berg | d9fe60d | 2008-10-09 12:13:49 +0200 | [diff] [blame] | 893 | struct ieee80211_sta_ht_cap ht_cap; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 894 | |
| 895 | /* must be last */ |
| 896 | u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); |
| 897 | }; |
| 898 | |
| 899 | /** |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 900 | * enum sta_notify_cmd - sta notify command |
| 901 | * |
| 902 | * Used with the sta_notify() callback in &struct ieee80211_ops, this |
Sujith | 38a6cc7 | 2010-05-19 11:32:30 +0530 | [diff] [blame] | 903 | * indicates if an associated station made a power state transition. |
Tomas Winkler | 478f8d2 | 2007-09-30 13:52:37 +0200 | [diff] [blame] | 904 | * |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 905 | * @STA_NOTIFY_SLEEP: a station is now sleeping |
| 906 | * @STA_NOTIFY_AWAKE: a sleeping station woke up |
| 907 | */ |
Christian Lamparter | 89fad57 | 2008-12-09 16:28:06 +0100 | [diff] [blame] | 908 | enum sta_notify_cmd { |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 909 | STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, |
| 910 | }; |
| 911 | |
| 912 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 913 | * enum ieee80211_tkip_key_type - get tkip key |
| 914 | * |
| 915 | * Used by drivers which need to get a tkip key for skb. Some drivers need a |
| 916 | * phase 1 key, others need a phase 2 key. A single function allows the driver |
| 917 | * to get the key, this enum indicates what type of key is required. |
| 918 | * |
| 919 | * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key |
| 920 | * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key |
| 921 | */ |
| 922 | enum ieee80211_tkip_key_type { |
| 923 | IEEE80211_TKIP_P1_KEY, |
| 924 | IEEE80211_TKIP_P2_KEY, |
| 925 | }; |
| 926 | |
| 927 | /** |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 928 | * enum ieee80211_hw_flags - hardware flags |
| 929 | * |
| 930 | * These flags are used to indicate hardware capabilities to |
| 931 | * the stack. Generally, flags here should have their meaning |
| 932 | * done in a way that the simplest hardware doesn't need setting |
| 933 | * any particular flags. There are some exceptions to this rule, |
| 934 | * however, so you are advised to review these flags carefully. |
| 935 | * |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 936 | * @IEEE80211_HW_HAS_RATE_CONTROL: |
| 937 | * The hardware or firmware includes rate control, and cannot be |
| 938 | * controlled by the stack. As such, no rate control algorithm |
| 939 | * should be instantiated, and the TX rate reported to userspace |
| 940 | * will be taken from the TX status instead of the rate control |
| 941 | * algorithm. |
| 942 | * Note that this requires that the driver implement a number of |
| 943 | * callbacks so it has the correct information, it needs to have |
| 944 | * the @set_rts_threshold callback and must look at the BSS config |
| 945 | * @use_cts_prot for G/N protection, @use_short_slot for slot |
| 946 | * timing in 2.4 GHz and @use_short_preamble for preambles for |
| 947 | * CCK frames. |
| 948 | * |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 949 | * @IEEE80211_HW_RX_INCLUDES_FCS: |
| 950 | * Indicates that received frames passed to the stack include |
| 951 | * the FCS at the end. |
| 952 | * |
| 953 | * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: |
| 954 | * Some wireless LAN chipsets buffer broadcast/multicast frames |
| 955 | * for power saving stations in the hardware/firmware and others |
| 956 | * rely on the host system for such buffering. This option is used |
| 957 | * to configure the IEEE 802.11 upper layer to buffer broadcast and |
| 958 | * multicast frames when there are power saving stations so that |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 959 | * the driver can fetch them with ieee80211_get_buffered_bc(). |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 960 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 961 | * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: |
| 962 | * Hardware is not capable of short slot operation on the 2.4 GHz band. |
| 963 | * |
| 964 | * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: |
| 965 | * Hardware is not capable of receiving frames with short preamble on |
| 966 | * the 2.4 GHz band. |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 967 | * |
| 968 | * @IEEE80211_HW_SIGNAL_UNSPEC: |
| 969 | * Hardware can provide signal values but we don't know its units. We |
| 970 | * expect values between 0 and @max_signal. |
| 971 | * If possible please provide dB or dBm instead. |
| 972 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 973 | * @IEEE80211_HW_SIGNAL_DBM: |
| 974 | * Hardware gives signal values in dBm, decibel difference from |
| 975 | * one milliwatt. This is the preferred method since it is standardized |
| 976 | * between different devices. @max_signal does not need to be set. |
| 977 | * |
Tomas Winkler | 06ff47b | 2008-06-18 17:53:44 +0300 | [diff] [blame] | 978 | * @IEEE80211_HW_SPECTRUM_MGMT: |
| 979 | * Hardware supports spectrum management defined in 802.11h |
| 980 | * Measurement, Channel Switch, Quieting, TPC |
Sujith | 8b30b1f | 2008-10-24 09:55:27 +0530 | [diff] [blame] | 981 | * |
| 982 | * @IEEE80211_HW_AMPDU_AGGREGATION: |
| 983 | * Hardware supports 11n A-MPDU aggregation. |
Kalle Valo | 520eb82 | 2008-12-18 23:35:27 +0200 | [diff] [blame] | 984 | * |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 985 | * @IEEE80211_HW_SUPPORTS_PS: |
| 986 | * Hardware has power save support (i.e. can go to sleep). |
| 987 | * |
| 988 | * @IEEE80211_HW_PS_NULLFUNC_STACK: |
| 989 | * Hardware requires nullfunc frame handling in stack, implies |
| 990 | * stack support for dynamic PS. |
| 991 | * |
| 992 | * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: |
| 993 | * Hardware has support for dynamic PS. |
Jouni Malinen | 4375d08 | 2009-01-08 13:32:11 +0200 | [diff] [blame] | 994 | * |
| 995 | * @IEEE80211_HW_MFP_CAPABLE: |
| 996 | * Hardware supports management frame protection (MFP, IEEE 802.11w). |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 997 | * |
| 998 | * @IEEE80211_HW_BEACON_FILTER: |
| 999 | * Hardware supports dropping of irrelevant beacon frames to |
| 1000 | * avoid waking up cpu. |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1001 | * |
| 1002 | * @IEEE80211_HW_SUPPORTS_STATIC_SMPS: |
| 1003 | * Hardware supports static spatial multiplexing powersave, |
| 1004 | * ie. can turn off all but one chain even on HT connections |
| 1005 | * that should be using more chains. |
| 1006 | * |
| 1007 | * @IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS: |
| 1008 | * Hardware supports dynamic spatial multiplexing powersave, |
| 1009 | * ie. can turn off all but one chain and then wake the rest |
| 1010 | * up as required after, for example, rts/cts handshake. |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 1011 | * |
| 1012 | * @IEEE80211_HW_SUPPORTS_UAPSD: |
| 1013 | * Hardware supports Unscheduled Automatic Power Save Delivery |
| 1014 | * (U-APSD) in managed mode. The mode is configured with |
| 1015 | * conf_tx() operation. |
Vivek Natarajan | 375177b | 2010-02-09 14:50:28 +0530 | [diff] [blame] | 1016 | * |
| 1017 | * @IEEE80211_HW_REPORTS_TX_ACK_STATUS: |
| 1018 | * Hardware can provide ack status reports of Tx frames to |
| 1019 | * the stack. |
| 1020 | * |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 1021 | * @IEEE80211_HW_CONNECTION_MONITOR: |
| 1022 | * The hardware performs its own connection monitoring, including |
| 1023 | * periodic keep-alives to the AP and probing the AP on beacon loss. |
| 1024 | * When this flag is set, signaling beacon-loss will cause an immediate |
| 1025 | * change to disassociated state. |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 1026 | * |
| 1027 | * @IEEE80211_HW_SUPPORTS_CQM_RSSI: |
| 1028 | * Hardware can do connection quality monitoring - i.e. it can monitor |
| 1029 | * connection quality related parameters, such as the RSSI level and |
| 1030 | * provide notifications if configured trigger levels are reached. |
| 1031 | * |
Johannes Berg | e5b900d | 2010-07-29 16:08:55 +0200 | [diff] [blame] | 1032 | * @IEEE80211_HW_NEED_DTIM_PERIOD: |
| 1033 | * This device needs to know the DTIM period for the BSS before |
| 1034 | * associating. |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 1035 | */ |
| 1036 | enum ieee80211_hw_flags { |
Johannes Berg | af65cd96 | 2009-11-17 18:18:36 +0100 | [diff] [blame] | 1037 | IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 1038 | IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, |
| 1039 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1040 | IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, |
| 1041 | IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1042 | IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, |
Johannes Berg | 7fee537 | 2009-01-30 11:13:06 +0100 | [diff] [blame] | 1043 | IEEE80211_HW_SIGNAL_DBM = 1<<6, |
Johannes Berg | e5b900d | 2010-07-29 16:08:55 +0200 | [diff] [blame] | 1044 | IEEE80211_HW_NEED_DTIM_PERIOD = 1<<7, |
Johannes Berg | 7fee537 | 2009-01-30 11:13:06 +0100 | [diff] [blame] | 1045 | IEEE80211_HW_SPECTRUM_MGMT = 1<<8, |
| 1046 | IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, |
| 1047 | IEEE80211_HW_SUPPORTS_PS = 1<<10, |
| 1048 | IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, |
| 1049 | IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, |
| 1050 | IEEE80211_HW_MFP_CAPABLE = 1<<13, |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1051 | IEEE80211_HW_BEACON_FILTER = 1<<14, |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1052 | IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15, |
| 1053 | IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16, |
Kalle Valo | ab13315 | 2010-01-12 10:42:31 +0200 | [diff] [blame] | 1054 | IEEE80211_HW_SUPPORTS_UAPSD = 1<<17, |
Vivek Natarajan | 375177b | 2010-02-09 14:50:28 +0530 | [diff] [blame] | 1055 | IEEE80211_HW_REPORTS_TX_ACK_STATUS = 1<<18, |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 1056 | IEEE80211_HW_CONNECTION_MONITOR = 1<<19, |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 1057 | IEEE80211_HW_SUPPORTS_CQM_RSSI = 1<<20, |
Johannes Berg | 1bc0826 | 2007-09-18 17:29:15 -0400 | [diff] [blame] | 1058 | }; |
| 1059 | |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 1060 | /** |
| 1061 | * struct ieee80211_hw - hardware information and state |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1062 | * |
| 1063 | * This structure contains the configuration and hardware |
| 1064 | * information for an 802.11 PHY. |
| 1065 | * |
| 1066 | * @wiphy: This points to the &struct wiphy allocated for this |
| 1067 | * 802.11 PHY. You must fill in the @perm_addr and @dev |
| 1068 | * members of this structure using SET_IEEE80211_DEV() |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1069 | * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported |
| 1070 | * bands (with channels, bitrates) are registered here. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1071 | * |
| 1072 | * @conf: &struct ieee80211_conf, device configuration, don't use. |
| 1073 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1074 | * @priv: pointer to private area that was allocated for driver use |
| 1075 | * along with this structure. |
| 1076 | * |
| 1077 | * @flags: hardware flags, see &enum ieee80211_hw_flags. |
| 1078 | * |
| 1079 | * @extra_tx_headroom: headroom to reserve in each transmit skb |
| 1080 | * for use by the driver (e.g. for transmit headers.) |
| 1081 | * |
| 1082 | * @channel_change_time: time (in microseconds) it takes to change channels. |
| 1083 | * |
Bruno Randolf | 566bfe5 | 2008-05-08 19:15:40 +0200 | [diff] [blame] | 1084 | * @max_signal: Maximum value for signal (rssi) in RX information, used |
| 1085 | * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1086 | * |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1087 | * @max_listen_interval: max listen interval in units of beacon interval |
| 1088 | * that HW supports |
| 1089 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1090 | * @queues: number of available hardware transmit queues for |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1091 | * data packets. WMM/QoS requires at least four, these |
| 1092 | * queues need to have configurable access parameters. |
| 1093 | * |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 1094 | * @rate_control_algorithm: rate control algorithm for this hardware. |
| 1095 | * If unset (NULL), the default algorithm will be used. Must be |
| 1096 | * set before calling ieee80211_register_hw(). |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1097 | * |
| 1098 | * @vif_data_size: size (in bytes) of the drv_priv data area |
| 1099 | * within &struct ieee80211_vif. |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1100 | * @sta_data_size: size (in bytes) of the drv_priv data area |
| 1101 | * within &struct ieee80211_sta. |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 1102 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1103 | * @max_rates: maximum number of alternate rate retry stages |
| 1104 | * @max_rate_tries: maximum number of tries for each stage |
Johannes Berg | 7ac1bd6 | 2007-09-14 11:10:25 -0400 | [diff] [blame] | 1105 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1106 | struct ieee80211_hw { |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1107 | struct ieee80211_conf conf; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1108 | struct wiphy *wiphy; |
Johannes Berg | 830f903 | 2007-10-28 14:51:05 +0100 | [diff] [blame] | 1109 | const char *rate_control_algorithm; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1110 | void *priv; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1111 | u32 flags; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1112 | unsigned int extra_tx_headroom; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1113 | int channel_change_time; |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1114 | int vif_data_size; |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1115 | int sta_data_size; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1116 | u16 queues; |
Tomas Winkler | ea95bba | 2008-07-18 13:53:00 +0800 | [diff] [blame] | 1117 | u16 max_listen_interval; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1118 | s8 max_signal; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1119 | u8 max_rates; |
| 1120 | u8 max_rate_tries; |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1121 | }; |
| 1122 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1123 | /** |
Luis R. Rodriguez | 9a95371 | 2009-01-22 15:05:53 -0800 | [diff] [blame] | 1124 | * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy |
| 1125 | * |
| 1126 | * @wiphy: the &struct wiphy which we want to query |
| 1127 | * |
| 1128 | * mac80211 drivers can use this to get to their respective |
| 1129 | * &struct ieee80211_hw. Drivers wishing to get to their own private |
| 1130 | * structure can then access it via hw->priv. Note that mac802111 drivers should |
| 1131 | * not use wiphy_priv() to try to get their private driver structure as this |
| 1132 | * is already used internally by mac80211. |
| 1133 | */ |
| 1134 | struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); |
| 1135 | |
| 1136 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1137 | * SET_IEEE80211_DEV - set device for 802.11 hardware |
| 1138 | * |
| 1139 | * @hw: the &struct ieee80211_hw to set the device for |
| 1140 | * @dev: the &struct device of this 802.11 device |
| 1141 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1142 | static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) |
| 1143 | { |
| 1144 | set_wiphy_dev(hw->wiphy, dev); |
| 1145 | } |
| 1146 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1147 | /** |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1148 | * 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] | 1149 | * |
| 1150 | * @hw: the &struct ieee80211_hw to set the MAC address for |
| 1151 | * @addr: the address to set |
| 1152 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1153 | static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) |
| 1154 | { |
| 1155 | memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); |
| 1156 | } |
| 1157 | |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1158 | static inline struct ieee80211_rate * |
| 1159 | ieee80211_get_tx_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1160 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1161 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1162 | if (WARN_ON(c->control.rates[0].idx < 0)) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1163 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1164 | return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1165 | } |
| 1166 | |
| 1167 | static inline struct ieee80211_rate * |
| 1168 | ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1169 | const struct ieee80211_tx_info *c) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1170 | { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1171 | if (c->control.rts_cts_rate_idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1172 | return NULL; |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1173 | 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] | 1174 | } |
| 1175 | |
| 1176 | static inline struct ieee80211_rate * |
| 1177 | ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, |
Felix Fietkau | 870abdf | 2008-10-05 18:04:24 +0200 | [diff] [blame] | 1178 | const struct ieee80211_tx_info *c, int idx) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1179 | { |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1180 | if (c->control.rates[idx + 1].idx < 0) |
Johannes Berg | 2e92e6f | 2008-05-15 12:55:27 +0200 | [diff] [blame] | 1181 | return NULL; |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 1182 | 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] | 1183 | } |
| 1184 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1185 | /** |
| 1186 | * DOC: Hardware crypto acceleration |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1187 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1188 | * mac80211 is capable of taking advantage of many hardware |
| 1189 | * acceleration designs for encryption and decryption operations. |
| 1190 | * |
| 1191 | * The set_key() callback in the &struct ieee80211_ops for a given |
| 1192 | * device is called to enable hardware acceleration of encryption and |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1193 | * decryption. The callback takes a @sta parameter that will be NULL |
| 1194 | * for default keys or keys used for transmission only, or point to |
| 1195 | * the station information for the peer for individual keys. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1196 | * Multiple transmission keys with the same key index may be used when |
| 1197 | * VLANs are configured for an access point. |
| 1198 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1199 | * When transmitting, the TX control data will use the @hw_key_idx |
| 1200 | * selected by the driver by modifying the &struct ieee80211_key_conf |
| 1201 | * pointed to by the @key parameter to the set_key() function. |
| 1202 | * |
| 1203 | * The set_key() call for the %SET_KEY command should return 0 if |
| 1204 | * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be |
| 1205 | * added; if you return 0 then hw_key_idx must be assigned to the |
| 1206 | * hardware key index, you are free to use the full u8 range. |
| 1207 | * |
| 1208 | * When the cmd is %DISABLE_KEY then it must succeed. |
| 1209 | * |
| 1210 | * Note that it is permissible to not decrypt a frame even if a key |
| 1211 | * for it has been uploaded to hardware, the stack will not make any |
| 1212 | * decision based on whether a key has been uploaded or not but rather |
| 1213 | * based on the receive flags. |
| 1214 | * |
| 1215 | * The &struct ieee80211_key_conf structure pointed to by the @key |
| 1216 | * parameter is guaranteed to be valid until another call to set_key() |
| 1217 | * removes it, but it can only be used as a cookie to differentiate |
| 1218 | * keys. |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1219 | * |
| 1220 | * In TKIP some HW need to be provided a phase 1 key, for RX decryption |
| 1221 | * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key |
| 1222 | * handler. |
| 1223 | * The update_tkip_key() call updates the driver with the new phase 1 key. |
| 1224 | * This happens everytime the iv16 wraps around (every 65536 packets). The |
| 1225 | * set_key() call will happen only once for each key (unless the AP did |
| 1226 | * 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] | 1227 | * 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] | 1228 | * handler is software decryption with wrap around of iv16. |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1229 | */ |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1230 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1231 | /** |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1232 | * DOC: Powersave support |
| 1233 | * |
| 1234 | * mac80211 has support for various powersave implementations. |
| 1235 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1236 | * First, it can support hardware that handles all powersaving by itself, |
| 1237 | * such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS hardware |
| 1238 | * flag. In that case, it will be told about the desired powersave mode |
| 1239 | * with the %IEEE80211_CONF_PS flag depending on the association status. |
| 1240 | * The hardware must take care of sending nullfunc frames when necessary, |
| 1241 | * i.e. when entering and leaving powersave mode. The hardware is required |
| 1242 | * to look at the AID in beacons and signal to the AP that it woke up when |
| 1243 | * it finds traffic directed to it. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1244 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1245 | * %IEEE80211_CONF_PS flag enabled means that the powersave mode defined in |
| 1246 | * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused |
| 1247 | * with hardware wakeup and sleep states. Driver is responsible for waking |
| 1248 | * up the hardware before issueing commands to the hardware and putting it |
| 1249 | * back to sleep at approriate times. |
| 1250 | * |
| 1251 | * When PS is enabled, hardware needs to wakeup for beacons and receive the |
| 1252 | * buffered multicast/broadcast frames after the beacon. Also it must be |
| 1253 | * possible to send frames and receive the acknowledment frame. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1254 | * |
| 1255 | * Other hardware designs cannot send nullfunc frames by themselves and also |
| 1256 | * need software support for parsing the TIM bitmap. This is also supported |
| 1257 | * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and |
| 1258 | * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still |
Johannes Berg | 955394c | 2009-04-16 17:04:25 +0200 | [diff] [blame] | 1259 | * required to pass up beacons. The hardware is still required to handle |
| 1260 | * 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] | 1261 | * as best as it can, mac80211 is too slow to do that. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1262 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1263 | * Dynamic powersave is an extension to normal powersave in which the |
| 1264 | * hardware stays awake for a user-specified period of time after sending a |
| 1265 | * frame so that reply frames need not be buffered and therefore delayed to |
| 1266 | * the next wakeup. It's compromise of getting good enough latency when |
| 1267 | * there's data traffic and still saving significantly power in idle |
| 1268 | * periods. |
| 1269 | * |
| 1270 | * Dynamic powersave is supported by simply mac80211 enabling and disabling |
| 1271 | * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS |
| 1272 | * flag and mac80211 will handle everything automatically. Additionally, |
| 1273 | * hardware having support for the dynamic PS feature may set the |
| 1274 | * %IEEE80211_HW_SUPPORTS_DYNAMIC_PS flag to indicate that it can support |
| 1275 | * dynamic PS mode itself. The driver needs to look at the |
| 1276 | * @dynamic_ps_timeout hardware configuration value and use it that value |
| 1277 | * whenever %IEEE80211_CONF_PS is set. In this case mac80211 will disable |
| 1278 | * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS |
| 1279 | * enabled whenever user has enabled powersave. |
| 1280 | * |
Juuso Oikarinen | f90754c | 2010-06-21 08:59:39 +0300 | [diff] [blame] | 1281 | * Some hardware need to toggle a single shared antenna between WLAN and |
| 1282 | * Bluetooth to facilitate co-existence. These types of hardware set |
| 1283 | * limitations on the use of host controlled dynamic powersave whenever there |
| 1284 | * is simultaneous WLAN and Bluetooth traffic. For these types of hardware, the |
| 1285 | * driver may request temporarily going into full power save, in order to |
| 1286 | * enable toggling the antenna between BT and WLAN. If the driver requests |
| 1287 | * disabling dynamic powersave, the @dynamic_ps_timeout value will be |
| 1288 | * temporarily set to zero until the driver re-enables dynamic powersave. |
| 1289 | * |
Kalle Valo | c99445b | 2010-01-14 13:09:21 +0200 | [diff] [blame] | 1290 | * Driver informs U-APSD client support by enabling |
| 1291 | * %IEEE80211_HW_SUPPORTS_UAPSD flag. The mode is configured through the |
| 1292 | * uapsd paramater in conf_tx() operation. Hardware needs to send the QoS |
| 1293 | * Nullfunc frames and stay awake until the service period has ended. To |
| 1294 | * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames |
| 1295 | * from that AC are transmitted with powersave enabled. |
| 1296 | * |
| 1297 | * Note: U-APSD client mode is not yet supported with |
| 1298 | * %IEEE80211_HW_PS_NULLFUNC_STACK. |
Johannes Berg | 4be8c38 | 2009-01-07 18:28:20 +0100 | [diff] [blame] | 1299 | */ |
| 1300 | |
| 1301 | /** |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1302 | * DOC: Beacon filter support |
| 1303 | * |
| 1304 | * Some hardware have beacon filter support to reduce host cpu wakeups |
| 1305 | * which will reduce system power consumption. It usuallly works so that |
| 1306 | * the firmware creates a checksum of the beacon but omits all constantly |
| 1307 | * changing elements (TSF, TIM etc). Whenever the checksum changes the |
| 1308 | * beacon is forwarded to the host, otherwise it will be just dropped. That |
| 1309 | * way the host will only receive beacons where some relevant information |
| 1310 | * (for example ERP protection or WMM settings) have changed. |
| 1311 | * |
Johannes Berg | 955394c | 2009-04-16 17:04:25 +0200 | [diff] [blame] | 1312 | * Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER |
| 1313 | * hardware capability. The driver needs to enable beacon filter support |
| 1314 | * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When |
| 1315 | * power save is enabled, the stack will not check for beacon loss and the |
| 1316 | * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). |
| 1317 | * |
| 1318 | * The time (or number of beacons missed) until the firmware notifies the |
| 1319 | * driver of a beacon loss event (which in turn causes the driver to call |
| 1320 | * ieee80211_beacon_loss()) should be configurable and will be controlled |
| 1321 | * by mac80211 and the roaming algorithm in the future. |
| 1322 | * |
| 1323 | * Since there may be constantly changing information elements that nothing |
| 1324 | * in the software stack cares about, we will, in the future, have mac80211 |
| 1325 | * tell the driver which information elements are interesting in the sense |
| 1326 | * that we want to see changes in them. This will include |
| 1327 | * - a list of information element IDs |
| 1328 | * - a list of OUIs for the vendor information element |
| 1329 | * |
| 1330 | * Ideally, the hardware would filter out any beacons without changes in the |
| 1331 | * requested elements, but if it cannot support that it may, at the expense |
| 1332 | * of some efficiency, filter out only a subset. For example, if the device |
| 1333 | * doesn't support checking for OUIs it should pass up all changes in all |
| 1334 | * vendor information elements. |
| 1335 | * |
| 1336 | * Note that change, for the sake of simplification, also includes information |
| 1337 | * elements appearing or disappearing from the beacon. |
| 1338 | * |
| 1339 | * Some hardware supports an "ignore list" instead, just make sure nothing |
| 1340 | * that was requested is on the ignore list, and include commonly changing |
| 1341 | * information element IDs in the ignore list, for example 11 (BSS load) and |
| 1342 | * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, |
| 1343 | * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility |
| 1344 | * it could also include some currently unused IDs. |
| 1345 | * |
| 1346 | * |
| 1347 | * In addition to these capabilities, hardware should support notifying the |
| 1348 | * host of changes in the beacon RSSI. This is relevant to implement roaming |
| 1349 | * when no traffic is flowing (when traffic is flowing we see the RSSI of |
| 1350 | * the received data packets). This can consist in notifying the host when |
| 1351 | * the RSSI changes significantly or when it drops below or rises above |
| 1352 | * configurable thresholds. In the future these thresholds will also be |
| 1353 | * configured by mac80211 (which gets them from userspace) to implement |
| 1354 | * them as the roaming algorithm requires. |
| 1355 | * |
| 1356 | * If the hardware cannot implement this, the driver should ask it to |
| 1357 | * periodically pass beacon frames to the host so that software can do the |
| 1358 | * signal strength threshold checking. |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 1359 | */ |
| 1360 | |
| 1361 | /** |
Johannes Berg | 0f78231 | 2009-12-01 13:37:02 +0100 | [diff] [blame] | 1362 | * DOC: Spatial multiplexing power save |
| 1363 | * |
| 1364 | * SMPS (Spatial multiplexing power save) is a mechanism to conserve |
| 1365 | * power in an 802.11n implementation. For details on the mechanism |
| 1366 | * and rationale, please refer to 802.11 (as amended by 802.11n-2009) |
| 1367 | * "11.2.3 SM power save". |
| 1368 | * |
| 1369 | * The mac80211 implementation is capable of sending action frames |
| 1370 | * to update the AP about the station's SMPS mode, and will instruct |
| 1371 | * the driver to enter the specific mode. It will also announce the |
| 1372 | * requested SMPS mode during the association handshake. Hardware |
| 1373 | * support for this feature is required, and can be indicated by |
| 1374 | * hardware flags. |
| 1375 | * |
| 1376 | * The default mode will be "automatic", which nl80211/cfg80211 |
| 1377 | * defines to be dynamic SMPS in (regular) powersave, and SMPS |
| 1378 | * turned off otherwise. |
| 1379 | * |
| 1380 | * To support this feature, the driver must set the appropriate |
| 1381 | * hardware support flags, and handle the SMPS flag to the config() |
| 1382 | * operation. It will then with this mechanism be instructed to |
| 1383 | * enter the requested SMPS mode while associated to an HT AP. |
| 1384 | */ |
| 1385 | |
| 1386 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1387 | * DOC: Frame filtering |
| 1388 | * |
| 1389 | * mac80211 requires to see many management frames for proper |
| 1390 | * operation, and users may want to see many more frames when |
| 1391 | * in monitor mode. However, for best CPU usage and power consumption, |
| 1392 | * having as few frames as possible percolate through the stack is |
| 1393 | * desirable. Hence, the hardware should filter as much as possible. |
| 1394 | * |
| 1395 | * To achieve this, mac80211 uses filter flags (see below) to tell |
| 1396 | * the driver's configure_filter() function which frames should be |
| 1397 | * passed to mac80211 and which should be filtered out. |
| 1398 | * |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1399 | * Before configure_filter() is invoked, the prepare_multicast() |
| 1400 | * callback is invoked with the parameters @mc_count and @mc_list |
| 1401 | * for the combined multicast address list of all virtual interfaces. |
| 1402 | * It's use is optional, and it returns a u64 that is passed to |
| 1403 | * configure_filter(). Additionally, configure_filter() has the |
| 1404 | * arguments @changed_flags telling which flags were changed and |
| 1405 | * @total_flags with the new flag states. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1406 | * |
| 1407 | * If your device has no multicast address filters your driver will |
| 1408 | * need to check both the %FIF_ALLMULTI flag and the @mc_count |
| 1409 | * parameter to see whether multicast frames should be accepted |
| 1410 | * or dropped. |
| 1411 | * |
Michael Buesch | d0f5afb | 2008-02-12 20:12:45 +0100 | [diff] [blame] | 1412 | * All unsupported flags in @total_flags must be cleared. |
| 1413 | * Hardware does not support a flag if it is incapable of _passing_ |
| 1414 | * the frame to the stack. Otherwise the driver must ignore |
| 1415 | * the flag, but not clear it. |
| 1416 | * You must _only_ clear the flag (announce no support for the |
| 1417 | * flag to mac80211) if you are not able to pass the packet type |
| 1418 | * to the stack (so the hardware always filters it). |
| 1419 | * So for example, you should clear @FIF_CONTROL, if your hardware |
| 1420 | * always filters control frames. If your hardware always passes |
| 1421 | * control frames to the kernel and is incapable of filtering them, |
| 1422 | * you do _not_ clear the @FIF_CONTROL flag. |
| 1423 | * This rule applies to all other FIF flags as well. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1424 | */ |
| 1425 | |
| 1426 | /** |
| 1427 | * enum ieee80211_filter_flags - hardware filter flags |
| 1428 | * |
| 1429 | * These flags determine what the filter in hardware should be |
| 1430 | * programmed to let through and what should not be passed to the |
| 1431 | * stack. It is always safe to pass more frames than requested, |
| 1432 | * but this has negative impact on power consumption. |
| 1433 | * |
| 1434 | * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, |
| 1435 | * think of the BSS as your network segment and then this corresponds |
| 1436 | * to the regular ethernet device promiscuous mode. |
| 1437 | * |
| 1438 | * @FIF_ALLMULTI: pass all multicast frames, this is used if requested |
| 1439 | * by the user or if the hardware is not capable of filtering by |
| 1440 | * multicast address. |
| 1441 | * |
| 1442 | * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the |
| 1443 | * %RX_FLAG_FAILED_FCS_CRC for them) |
| 1444 | * |
| 1445 | * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set |
| 1446 | * the %RX_FLAG_FAILED_PLCP_CRC for them |
| 1447 | * |
| 1448 | * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate |
| 1449 | * to the hardware that it should not filter beacons or probe responses |
| 1450 | * by BSSID. Filtering them can greatly reduce the amount of processing |
| 1451 | * mac80211 needs to do and the amount of CPU wakeups, so you should |
| 1452 | * honour this flag if possible. |
| 1453 | * |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1454 | * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS |
| 1455 | * is not set then only those addressed to this station. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1456 | * |
| 1457 | * @FIF_OTHER_BSS: pass frames destined to other BSSes |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1458 | * |
| 1459 | * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only |
| 1460 | * those addressed to this station. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1461 | */ |
| 1462 | enum ieee80211_filter_flags { |
| 1463 | FIF_PROMISC_IN_BSS = 1<<0, |
| 1464 | FIF_ALLMULTI = 1<<1, |
| 1465 | FIF_FCSFAIL = 1<<2, |
| 1466 | FIF_PLCPFAIL = 1<<3, |
| 1467 | FIF_BCN_PRBRESP_PROMISC = 1<<4, |
| 1468 | FIF_CONTROL = 1<<5, |
| 1469 | FIF_OTHER_BSS = 1<<6, |
Igor Perminov | e3b90ca | 2009-08-04 16:48:51 +0400 | [diff] [blame] | 1470 | FIF_PSPOLL = 1<<7, |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1471 | }; |
| 1472 | |
| 1473 | /** |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1474 | * enum ieee80211_ampdu_mlme_action - A-MPDU actions |
| 1475 | * |
| 1476 | * These flags are used with the ampdu_action() callback in |
| 1477 | * &struct ieee80211_ops to indicate which action is needed. |
Johannes Berg | 827d42c | 2009-11-22 12:28:41 +0100 | [diff] [blame] | 1478 | * |
| 1479 | * Note that drivers MUST be able to deal with a TX aggregation |
| 1480 | * session being stopped even before they OK'ed starting it by |
Johannes Berg | 5d22c89 | 2010-06-10 10:21:40 +0200 | [diff] [blame] | 1481 | * calling ieee80211_start_tx_ba_cb_irqsafe, because the peer |
Johannes Berg | 827d42c | 2009-11-22 12:28:41 +0100 | [diff] [blame] | 1482 | * might receive the addBA frame and send a delBA right away! |
| 1483 | * |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1484 | * @IEEE80211_AMPDU_RX_START: start Rx aggregation |
| 1485 | * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1486 | * @IEEE80211_AMPDU_TX_START: start Tx aggregation |
| 1487 | * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation |
Johannes Berg | b172023 | 2009-03-23 17:28:39 +0100 | [diff] [blame] | 1488 | * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1489 | */ |
| 1490 | enum ieee80211_ampdu_mlme_action { |
| 1491 | IEEE80211_AMPDU_RX_START, |
| 1492 | IEEE80211_AMPDU_RX_STOP, |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1493 | IEEE80211_AMPDU_TX_START, |
| 1494 | IEEE80211_AMPDU_TX_STOP, |
Johannes Berg | b172023 | 2009-03-23 17:28:39 +0100 | [diff] [blame] | 1495 | IEEE80211_AMPDU_TX_OPERATIONAL, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1496 | }; |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1497 | |
| 1498 | /** |
| 1499 | * struct ieee80211_ops - callbacks from mac80211 to the driver |
| 1500 | * |
| 1501 | * This structure contains various callbacks that the driver may |
| 1502 | * handle or, in some cases, must handle, for example to configure |
| 1503 | * the hardware to a new channel or to transmit a frame. |
| 1504 | * |
| 1505 | * @tx: Handler that 802.11 module calls for each transmitted frame. |
| 1506 | * skb contains the buffer starting from the IEEE 802.11 header. |
| 1507 | * The low-level driver should send the frame out based on |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1508 | * configuration in the TX control data. This handler should, |
| 1509 | * preferably, never fail and stop queues appropriately, more |
| 1510 | * importantly, however, it must never fail for A-MPDU-queues. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1511 | * This function should return NETDEV_TX_OK except in very |
| 1512 | * limited cases. |
Johannes Berg | eefce91 | 2008-05-17 00:57:13 +0200 | [diff] [blame] | 1513 | * Must be implemented and atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1514 | * |
| 1515 | * @start: Called before the first netdevice attached to the hardware |
| 1516 | * is enabled. This should turn on the hardware and must turn on |
| 1517 | * frame reception (for possibly enabled monitor interfaces.) |
| 1518 | * Returns negative error codes, these may be seen in userspace, |
| 1519 | * or zero. |
| 1520 | * When the device is started it should not have a MAC address |
| 1521 | * to avoid acknowledging frames before a non-monitor device |
| 1522 | * is added. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1523 | * Must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1524 | * |
| 1525 | * @stop: Called after last netdevice attached to the hardware |
| 1526 | * is disabled. This should turn off the hardware (at least |
| 1527 | * it must turn off frame reception.) |
| 1528 | * May be called right after add_interface if that rejects |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 1529 | * an interface. If you added any work onto the mac80211 workqueue |
| 1530 | * you should ensure to cancel it on this callback. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1531 | * Must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1532 | * |
| 1533 | * @add_interface: Called when a netdevice attached to the hardware is |
Bob Copeland | e37d4df | 2008-10-20 21:20:27 -0400 | [diff] [blame] | 1534 | * enabled. Because it is not called for monitor mode devices, @start |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1535 | * and @stop must be implemented. |
| 1536 | * The driver should perform any initialization it needs before |
| 1537 | * the device can be enabled. The initial configuration for the |
| 1538 | * interface is given in the conf parameter. |
| 1539 | * The callback may refuse to add an interface by returning a |
| 1540 | * negative error code (which will be seen in userspace.) |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1541 | * Must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1542 | * |
| 1543 | * @remove_interface: Notifies a driver that an interface is going down. |
| 1544 | * The @stop callback is called after this if it is the last interface |
| 1545 | * and no monitor interfaces are present. |
| 1546 | * When all interfaces are removed, the MAC address in the hardware |
| 1547 | * must be cleared so the device no longer acknowledges packets, |
| 1548 | * the mac_addr member of the conf structure is, however, set to the |
| 1549 | * MAC address of the device going away. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1550 | * Hence, this callback must be implemented. It can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1551 | * |
| 1552 | * @config: Handler for configuration requests. IEEE 802.11 code calls this |
| 1553 | * function to change hardware configuration, e.g., channel. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1554 | * This function should never fail but returns a negative error code |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1555 | * if it does. The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1556 | * |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1557 | * @bss_info_changed: Handler for configuration requests related to BSS |
| 1558 | * parameters that may vary during BSS's lifespan, and may affect low |
| 1559 | * level driver (e.g. assoc/disassoc status, erp parameters). |
| 1560 | * This function should not be used if no BSS has been set, unless |
| 1561 | * for association indication. The @changed parameter indicates which |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1562 | * of the bss parameters has changed when a call is made. The callback |
| 1563 | * can sleep. |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1564 | * |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1565 | * @prepare_multicast: Prepare for multicast filter configuration. |
| 1566 | * This callback is optional, and its return value is passed |
| 1567 | * to configure_filter(). This callback must be atomic. |
| 1568 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1569 | * @configure_filter: Configure the device's RX filter. |
| 1570 | * See the section "Frame filtering" for more information. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1571 | * This callback must be implemented and can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1572 | * |
Luis R. Rodriguez | 546c80c9 | 2008-08-14 11:43:20 -0700 | [diff] [blame] | 1573 | * @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] | 1574 | * must be set or cleared for a given STA. Must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1575 | * |
| 1576 | * @set_key: See the section "Hardware crypto acceleration" |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1577 | * This callback is only called between add_interface and |
| 1578 | * remove_interface calls, i.e. while the given virtual interface |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1579 | * is enabled. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1580 | * Returns a negative error code if the key can't be added. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1581 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1582 | * |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1583 | * @update_tkip_key: See the section "Hardware crypto acceleration" |
| 1584 | * This callback will be called in the context of Rx. Called for drivers |
| 1585 | * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. |
Kalle Valo | eb807fb | 2010-01-24 14:55:12 +0200 | [diff] [blame] | 1586 | * The callback must be atomic. |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1587 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1588 | * @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] | 1589 | * the scan state machine in stack. The scan must honour the channel |
Kalle Valo | 9050bdd | 2009-03-22 21:57:21 +0200 | [diff] [blame] | 1590 | * configuration done by the regulatory agent in the wiphy's |
| 1591 | * registered bands. The hardware (or the driver) needs to make sure |
Johannes Berg | de95a54 | 2009-04-01 11:58:36 +0200 | [diff] [blame] | 1592 | * that power save is disabled. |
| 1593 | * The @req ie/ie_len members are rewritten by mac80211 to contain the |
| 1594 | * entire IEs after the SSID, so that drivers need not look at these |
| 1595 | * at all but just send them after the SSID -- mac80211 includes the |
| 1596 | * (extended) supported rates and HT information (where applicable). |
| 1597 | * When the scan finishes, ieee80211_scan_completed() must be called; |
| 1598 | * note that it also must be called when the scan cannot finish due to |
| 1599 | * any error unless this callback returned a negative error code. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1600 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1601 | * |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1602 | * @sw_scan_start: Notifier function that is called just before a software scan |
| 1603 | * 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] | 1604 | * The callback can sleep. |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1605 | * |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1606 | * @sw_scan_complete: Notifier function that is called just after a |
| 1607 | * software scan finished. Can be NULL, if the driver doesn't need |
| 1608 | * this notification. |
| 1609 | * The callback can sleep. |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1610 | * |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1611 | * @get_stats: Return low-level statistics. |
| 1612 | * Returns zero if statistics are available. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1613 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1614 | * |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1615 | * @get_tkip_seq: If your device implements TKIP encryption in hardware this |
| 1616 | * callback should be provided to read the TKIP transmit IVs (both IV32 |
| 1617 | * and IV16) for the given key from hardware. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1618 | * The callback must be atomic. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1619 | * |
| 1620 | * @set_rts_threshold: Configuration of RTS threshold (if device needs it) |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1621 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1622 | * |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1623 | * @sta_add: Notifies low level driver about addition of an associated station, |
| 1624 | * AP, IBSS/WDS/mesh peer etc. This callback can sleep. |
| 1625 | * |
| 1626 | * @sta_remove: Notifies low level driver about removal of an associated |
| 1627 | * station, AP, IBSS/WDS/mesh peer etc. This callback can sleep. |
| 1628 | * |
| 1629 | * @sta_notify: Notifies low level driver about power state transition of an |
| 1630 | * associated station, AP, IBSS/WDS/mesh peer etc. Must be atomic. |
Christian Lamparter | 4571d3b | 2008-11-30 00:48:41 +0100 | [diff] [blame] | 1631 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1632 | * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), |
Johannes Berg | fe3fa82 | 2008-09-08 11:05:09 +0200 | [diff] [blame] | 1633 | * bursting) for a hardware TX queue. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1634 | * Returns a negative error code on failure. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1635 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1636 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1637 | * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1638 | * 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] | 1639 | * required function. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1640 | * The callback can sleep. |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1641 | * |
| 1642 | * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. |
| 1643 | * Currently, this is only used for IBSS mode debugging. Is not a |
Alina Friedrichsen | 7b08b3b | 2009-02-05 17:58:34 +0100 | [diff] [blame] | 1644 | * required function. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1645 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1646 | * |
| 1647 | * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize |
| 1648 | * with other STAs in the IBSS. This is only used in IBSS mode. This |
| 1649 | * function is optional if the firmware/hardware takes full care of |
| 1650 | * TSF synchronization. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1651 | * The callback can sleep. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1652 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1653 | * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. |
| 1654 | * This is needed only for IBSS mode and the result of this function is |
| 1655 | * used to determine whether to reply to Probe Requests. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1656 | * Returns non-zero if this device sent the last beacon. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1657 | * The callback can sleep. |
Ron Rindjunsky | d3c990f | 2007-11-26 16:14:34 +0200 | [diff] [blame] | 1658 | * |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1659 | * @ampdu_action: Perform a certain A-MPDU action |
| 1660 | * The RA/TID combination determines the destination and TID we want |
| 1661 | * the ampdu action to be performed for. The action is defined through |
| 1662 | * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1663 | * is the first frame we expect to perform the action on. Notice |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 1664 | * that TX/RX_STOP can pass NULL for this parameter. |
Bob Copeland | 6dd1bf3 | 2009-01-08 21:00:34 -0500 | [diff] [blame] | 1665 | * Returns a negative error code on failure. |
Johannes Berg | 85ad181 | 2010-06-10 10:21:49 +0200 | [diff] [blame] | 1666 | * The callback can sleep. |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1667 | * |
Randy Dunlap | 4e8998f | 2010-05-21 11:28:33 -0700 | [diff] [blame] | 1668 | * @get_survey: Return per-channel survey information |
| 1669 | * |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1670 | * @rfkill_poll: Poll rfkill hardware state. If you need this, you also |
| 1671 | * need to set wiphy->rfkill_poll to %true before registration, |
| 1672 | * and need to call wiphy_rfkill_set_hw_state() in the callback. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1673 | * The callback can sleep. |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1674 | * |
Lukáš Turek | 310bc67 | 2009-12-21 22:50:48 +0100 | [diff] [blame] | 1675 | * @set_coverage_class: Set slot time for given coverage class as specified |
| 1676 | * in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout |
| 1677 | * accordingly. This callback is not required and may sleep. |
| 1678 | * |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1679 | * @testmode_cmd: Implement a cfg80211 test mode command. |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1680 | * The callback can sleep. |
Johannes Berg | a80f7c0 | 2009-12-23 13:15:32 +0100 | [diff] [blame] | 1681 | * |
| 1682 | * @flush: Flush all pending frames from the hardware queue, making sure |
| 1683 | * that the hardware queues are empty. If the parameter @drop is set |
Kalle Valo | e1781ed | 2009-12-23 13:15:47 +0100 | [diff] [blame] | 1684 | * to %true, pending frames may be dropped. The callback can sleep. |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 1685 | * |
| 1686 | * @channel_switch: Drivers that need (or want) to offload the channel |
| 1687 | * switch operation for CSAs received from the AP may implement this |
| 1688 | * callback. They must then call ieee80211_chswitch_done() to indicate |
| 1689 | * completion of the channel switch. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1690 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1691 | struct ieee80211_ops { |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1692 | int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1693 | int (*start)(struct ieee80211_hw *hw); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1694 | void (*stop)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1695 | int (*add_interface)(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1696 | struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1697 | void (*remove_interface)(struct ieee80211_hw *hw, |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1698 | struct ieee80211_vif *vif); |
Johannes Berg | e897558 | 2008-10-09 12:18:51 +0200 | [diff] [blame] | 1699 | int (*config)(struct ieee80211_hw *hw, u32 changed); |
Johannes Berg | 471b3ef | 2007-12-28 14:32:58 +0100 | [diff] [blame] | 1700 | void (*bss_info_changed)(struct ieee80211_hw *hw, |
| 1701 | struct ieee80211_vif *vif, |
| 1702 | struct ieee80211_bss_conf *info, |
| 1703 | u32 changed); |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1704 | u64 (*prepare_multicast)(struct ieee80211_hw *hw, |
Jiri Pirko | 22bedad3 | 2010-04-01 21:22:57 +0000 | [diff] [blame] | 1705 | struct netdev_hw_addr_list *mc_list); |
Johannes Berg | 4150c57 | 2007-09-17 01:29:23 -0400 | [diff] [blame] | 1706 | void (*configure_filter)(struct ieee80211_hw *hw, |
| 1707 | unsigned int changed_flags, |
| 1708 | unsigned int *total_flags, |
Johannes Berg | 3ac64be | 2009-08-17 16:16:53 +0200 | [diff] [blame] | 1709 | u64 multicast); |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1710 | int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
| 1711 | bool set); |
Johannes Berg | ea49c35 | 2007-09-18 17:29:21 -0400 | [diff] [blame] | 1712 | int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
Johannes Berg | dc822b5 | 2008-12-29 12:55:09 +0100 | [diff] [blame] | 1713 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
Johannes Berg | 11a843b | 2007-08-28 17:01:55 -0400 | [diff] [blame] | 1714 | struct ieee80211_key_conf *key); |
Emmanuel Grumbach | 9ae4fda | 2008-03-20 15:06:42 +0200 | [diff] [blame] | 1715 | void (*update_tkip_key)(struct ieee80211_hw *hw, |
Johannes Berg | b3fbdcf | 2010-01-21 11:40:47 +0100 | [diff] [blame] | 1716 | struct ieee80211_vif *vif, |
| 1717 | struct ieee80211_key_conf *conf, |
| 1718 | struct ieee80211_sta *sta, |
| 1719 | u32 iv32, u16 *phase1key); |
Johannes Berg | a060bbf | 2010-04-27 11:59:34 +0200 | [diff] [blame] | 1720 | int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 1721 | struct cfg80211_scan_request *req); |
Michael Buesch | 80e775b | 2009-02-20 15:37:03 +0100 | [diff] [blame] | 1722 | void (*sw_scan_start)(struct ieee80211_hw *hw); |
| 1723 | void (*sw_scan_complete)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1724 | int (*get_stats)(struct ieee80211_hw *hw, |
| 1725 | struct ieee80211_low_level_stats *stats); |
Johannes Berg | 62da92f | 2007-12-19 02:03:31 +0100 | [diff] [blame] | 1726 | void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, |
| 1727 | u32 *iv32, u16 *iv16); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1728 | int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); |
Johannes Berg | 34e8950 | 2010-02-03 13:59:58 +0100 | [diff] [blame] | 1729 | int (*sta_add)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| 1730 | struct ieee80211_sta *sta); |
| 1731 | int (*sta_remove)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| 1732 | struct ieee80211_sta *sta); |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 1733 | void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1734 | enum sta_notify_cmd, struct ieee80211_sta *sta); |
Johannes Berg | e100bb6 | 2008-04-30 18:51:21 +0200 | [diff] [blame] | 1735 | int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1736 | const struct ieee80211_tx_queue_params *params); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1737 | u64 (*get_tsf)(struct ieee80211_hw *hw); |
Alina Friedrichsen | 3b5d665 | 2009-01-24 07:09:59 +0100 | [diff] [blame] | 1738 | void (*set_tsf)(struct ieee80211_hw *hw, u64 tsf); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1739 | void (*reset_tsf)(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1740 | int (*tx_last_beacon)(struct ieee80211_hw *hw); |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1741 | int (*ampdu_action)(struct ieee80211_hw *hw, |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 1742 | struct ieee80211_vif *vif, |
Ron Rindjunsky | 1b7d03a | 2007-12-25 17:00:31 +0200 | [diff] [blame] | 1743 | enum ieee80211_ampdu_mlme_action action, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 1744 | struct ieee80211_sta *sta, u16 tid, u16 *ssn); |
Holger Schurig | 1289723 | 2010-04-19 10:23:57 +0200 | [diff] [blame] | 1745 | int (*get_survey)(struct ieee80211_hw *hw, int idx, |
| 1746 | struct survey_info *survey); |
Johannes Berg | 1f87f7d | 2009-06-02 13:01:41 +0200 | [diff] [blame] | 1747 | void (*rfkill_poll)(struct ieee80211_hw *hw); |
Lukáš Turek | 310bc67 | 2009-12-21 22:50:48 +0100 | [diff] [blame] | 1748 | void (*set_coverage_class)(struct ieee80211_hw *hw, u8 coverage_class); |
Johannes Berg | aff89a9 | 2009-07-01 21:26:51 +0200 | [diff] [blame] | 1749 | #ifdef CONFIG_NL80211_TESTMODE |
| 1750 | int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); |
| 1751 | #endif |
Johannes Berg | a80f7c0 | 2009-12-23 13:15:32 +0100 | [diff] [blame] | 1752 | void (*flush)(struct ieee80211_hw *hw, bool drop); |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 1753 | void (*channel_switch)(struct ieee80211_hw *hw, |
| 1754 | struct ieee80211_channel_switch *ch_switch); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1755 | }; |
| 1756 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1757 | /** |
| 1758 | * ieee80211_alloc_hw - Allocate a new hardware device |
| 1759 | * |
| 1760 | * This must be called once for each hardware device. The returned pointer |
| 1761 | * must be used to refer to this device when calling other functions. |
| 1762 | * mac80211 allocates a private data area for the driver pointed to by |
| 1763 | * @priv in &struct ieee80211_hw, the size of this area is given as |
| 1764 | * @priv_data_len. |
| 1765 | * |
| 1766 | * @priv_data_len: length of private data |
| 1767 | * @ops: callbacks for this device |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1768 | */ |
| 1769 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
| 1770 | const struct ieee80211_ops *ops); |
| 1771 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1772 | /** |
| 1773 | * ieee80211_register_hw - Register hardware device |
| 1774 | * |
Johannes Berg | dbbea67 | 2008-02-26 14:34:06 +0100 | [diff] [blame] | 1775 | * You must call this function before any other functions in |
| 1776 | * mac80211. Note that before a hardware can be registered, you |
| 1777 | * need to fill the contained wiphy's information. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1778 | * |
| 1779 | * @hw: the device to register as returned by ieee80211_alloc_hw() |
| 1780 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1781 | int ieee80211_register_hw(struct ieee80211_hw *hw); |
| 1782 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1783 | #ifdef CONFIG_MAC80211_LEDS |
| 1784 | extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); |
| 1785 | extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1786 | extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1787 | extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1788 | #endif |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1789 | /** |
| 1790 | * ieee80211_get_tx_led_name - get name of TX LED |
| 1791 | * |
| 1792 | * mac80211 creates a transmit LED trigger for each wireless hardware |
| 1793 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1794 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1795 | * of the trigger so you can automatically link the LED device. |
| 1796 | * |
| 1797 | * @hw: the hardware to get the LED trigger name for |
| 1798 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1799 | static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
| 1800 | { |
| 1801 | #ifdef CONFIG_MAC80211_LEDS |
| 1802 | return __ieee80211_get_tx_led_name(hw); |
| 1803 | #else |
| 1804 | return NULL; |
| 1805 | #endif |
| 1806 | } |
| 1807 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1808 | /** |
| 1809 | * ieee80211_get_rx_led_name - get name of RX LED |
| 1810 | * |
| 1811 | * mac80211 creates a receive LED trigger for each wireless hardware |
| 1812 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1813 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1814 | * of the trigger so you can automatically link the LED device. |
| 1815 | * |
| 1816 | * @hw: the hardware to get the LED trigger name for |
| 1817 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1818 | static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
| 1819 | { |
| 1820 | #ifdef CONFIG_MAC80211_LEDS |
| 1821 | return __ieee80211_get_rx_led_name(hw); |
| 1822 | #else |
| 1823 | return NULL; |
| 1824 | #endif |
| 1825 | } |
| 1826 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1827 | /** |
| 1828 | * ieee80211_get_assoc_led_name - get name of association LED |
| 1829 | * |
| 1830 | * mac80211 creates a association LED trigger for each wireless hardware |
| 1831 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1832 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1833 | * of the trigger so you can automatically link the LED device. |
| 1834 | * |
| 1835 | * @hw: the hardware to get the LED trigger name for |
| 1836 | */ |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1837 | static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
| 1838 | { |
| 1839 | #ifdef CONFIG_MAC80211_LEDS |
| 1840 | return __ieee80211_get_assoc_led_name(hw); |
| 1841 | #else |
| 1842 | return NULL; |
| 1843 | #endif |
| 1844 | } |
| 1845 | |
Ivo van Doorn | cdcb006 | 2008-01-07 19:45:24 +0100 | [diff] [blame] | 1846 | /** |
| 1847 | * ieee80211_get_radio_led_name - get name of radio LED |
| 1848 | * |
| 1849 | * mac80211 creates a radio change LED trigger for each wireless hardware |
| 1850 | * that can be used to drive LEDs if your driver registers a LED device. |
| 1851 | * This function returns the name (or %NULL if not configured for LEDs) |
| 1852 | * of the trigger so you can automatically link the LED device. |
| 1853 | * |
| 1854 | * @hw: the hardware to get the LED trigger name for |
| 1855 | */ |
| 1856 | static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) |
| 1857 | { |
| 1858 | #ifdef CONFIG_MAC80211_LEDS |
| 1859 | return __ieee80211_get_radio_led_name(hw); |
| 1860 | #else |
| 1861 | return NULL; |
| 1862 | #endif |
| 1863 | } |
Michael Buesch | 47f0c50 | 2007-09-27 15:10:44 +0200 | [diff] [blame] | 1864 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1865 | /** |
| 1866 | * ieee80211_unregister_hw - Unregister a hardware device |
| 1867 | * |
| 1868 | * This function instructs mac80211 to free allocated resources |
| 1869 | * and unregister netdevices from the networking subsystem. |
| 1870 | * |
| 1871 | * @hw: the hardware to unregister |
| 1872 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1873 | void ieee80211_unregister_hw(struct ieee80211_hw *hw); |
| 1874 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1875 | /** |
| 1876 | * ieee80211_free_hw - free hardware descriptor |
| 1877 | * |
| 1878 | * This function frees everything that was allocated, including the |
| 1879 | * private data for the driver. You must call ieee80211_unregister_hw() |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1880 | * before calling this function. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1881 | * |
| 1882 | * @hw: the hardware to free |
| 1883 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1884 | void ieee80211_free_hw(struct ieee80211_hw *hw); |
| 1885 | |
Johannes Berg | f2753dd | 2009-04-14 10:09:24 +0200 | [diff] [blame] | 1886 | /** |
| 1887 | * ieee80211_restart_hw - restart hardware completely |
| 1888 | * |
| 1889 | * Call this function when the hardware was restarted for some reason |
| 1890 | * (hardware error, ...) and the driver is unable to restore its state |
| 1891 | * by itself. mac80211 assumes that at this point the driver/hardware |
| 1892 | * is completely uninitialised and stopped, it starts the process by |
| 1893 | * calling the ->start() operation. The driver will need to reset all |
| 1894 | * internal state that it has prior to calling this function. |
| 1895 | * |
| 1896 | * @hw: the hardware to restart |
| 1897 | */ |
| 1898 | void ieee80211_restart_hw(struct ieee80211_hw *hw); |
| 1899 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1900 | /** |
| 1901 | * ieee80211_rx - receive frame |
| 1902 | * |
| 1903 | * Use this function to hand received frames to mac80211. The receive |
Zhu Yi | e3cf8b3 | 2010-03-29 17:35:07 +0800 | [diff] [blame] | 1904 | * buffer in @skb must start with an IEEE 802.11 header. In case of a |
| 1905 | * paged @skb is used, the driver is recommended to put the ieee80211 |
| 1906 | * header of the frame on the linear part of the @skb to avoid memory |
| 1907 | * allocation and/or memcpy by the stack. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1908 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1909 | * 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] | 1910 | * for a single hardware must be synchronized against each other. Calls to |
| 1911 | * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be |
| 1912 | * mixed for a single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1913 | * |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1914 | * In process context use instead ieee80211_rx_ni(). |
Johannes Berg | d20ef63 | 2009-10-11 15:10:40 +0200 | [diff] [blame] | 1915 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1916 | * @hw: the hardware this frame came in on |
| 1917 | * @skb: the buffer to receive, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1918 | */ |
John W. Linville | 103bf9f | 2009-08-20 16:34:15 -0400 | [diff] [blame] | 1919 | void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1920 | |
| 1921 | /** |
| 1922 | * ieee80211_rx_irqsafe - receive frame |
| 1923 | * |
| 1924 | * Like ieee80211_rx() but can be called in IRQ context |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1925 | * (internally defers to a tasklet.) |
| 1926 | * |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1927 | * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not |
| 1928 | * be mixed for a single hardware. |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1929 | * |
| 1930 | * @hw: the hardware this frame came in on |
| 1931 | * @skb: the buffer to receive, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1932 | */ |
Johannes Berg | f1d58c2 | 2009-06-17 13:13:00 +0200 | [diff] [blame] | 1933 | void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1934 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1935 | /** |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1936 | * ieee80211_rx_ni - receive frame (in process context) |
| 1937 | * |
| 1938 | * Like ieee80211_rx() but can be called in process context |
| 1939 | * (internally disables bottom halves). |
| 1940 | * |
| 1941 | * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may |
| 1942 | * not be mixed for a single hardware. |
| 1943 | * |
| 1944 | * @hw: the hardware this frame came in on |
| 1945 | * @skb: the buffer to receive, owned by mac80211 after this call |
| 1946 | */ |
| 1947 | static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, |
| 1948 | struct sk_buff *skb) |
| 1949 | { |
| 1950 | local_bh_disable(); |
| 1951 | ieee80211_rx(hw, skb); |
| 1952 | local_bh_enable(); |
| 1953 | } |
| 1954 | |
Gertjan van Wingerde | d24deb2 | 2009-12-04 23:46:54 +0100 | [diff] [blame] | 1955 | /* |
| 1956 | * The TX headroom reserved by mac80211 for its own tx_status functions. |
| 1957 | * This is enough for the radiotap header. |
| 1958 | */ |
| 1959 | #define IEEE80211_TX_STATUS_HEADROOM 13 |
| 1960 | |
Kalle Valo | e36e49f | 2009-10-13 20:33:13 +0300 | [diff] [blame] | 1961 | /** |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1962 | * ieee80211_tx_status - transmit status callback |
| 1963 | * |
| 1964 | * Call this function for all transmitted frames after they have been |
| 1965 | * transmitted. It is permissible to not call this function for |
| 1966 | * multicast frames but this can affect statistics. |
| 1967 | * |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1968 | * This function may not be called in IRQ context. Calls to this function |
| 1969 | * for a single hardware must be synchronized against each other. Calls |
| 1970 | * to this function and ieee80211_tx_status_irqsafe() may not be mixed |
| 1971 | * for a single hardware. |
| 1972 | * |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1973 | * @hw: the hardware the frame was transmitted by |
| 1974 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 1975 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1976 | void ieee80211_tx_status(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1977 | struct sk_buff *skb); |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1978 | |
| 1979 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 1980 | * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1981 | * |
| 1982 | * Like ieee80211_tx_status() but can be called in IRQ context |
| 1983 | * (internally defers to a tasklet.) |
| 1984 | * |
| 1985 | * Calls to this function and ieee80211_tx_status() may not be mixed for a |
| 1986 | * single hardware. |
| 1987 | * |
| 1988 | * @hw: the hardware the frame was transmitted by |
| 1989 | * @skb: the frame that was transmitted, owned by mac80211 after this call |
Johannes Berg | 2485f71 | 2008-02-25 16:27:41 +0100 | [diff] [blame] | 1990 | */ |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1991 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 1992 | struct sk_buff *skb); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 1993 | |
| 1994 | /** |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 1995 | * ieee80211_beacon_get_tim - beacon generation function |
| 1996 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 1997 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 1998 | * @tim_offset: pointer to variable that will receive the TIM IE offset. |
| 1999 | * Set to 0 if invalid (in non-AP modes). |
| 2000 | * @tim_length: pointer to variable that will receive the TIM IE length, |
| 2001 | * (including the ID and length bytes!). |
| 2002 | * Set to 0 if invalid (in non-AP modes). |
| 2003 | * |
| 2004 | * If the driver implements beaconing modes, it must use this function to |
| 2005 | * obtain the beacon frame/template. |
| 2006 | * |
| 2007 | * If the beacon frames are generated by the host system (i.e., not in |
| 2008 | * hardware/firmware), the driver uses this function to get each beacon |
| 2009 | * frame from mac80211 -- it is responsible for calling this function |
| 2010 | * before the beacon is needed (e.g. based on hardware interrupt). |
| 2011 | * |
| 2012 | * If the beacon frames are generated by the device, then the driver |
| 2013 | * must use the returned beacon as the template and change the TIM IE |
| 2014 | * according to the current DTIM parameters/TIM bitmap. |
| 2015 | * |
| 2016 | * The driver is responsible for freeing the returned skb. |
| 2017 | */ |
| 2018 | struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, |
| 2019 | struct ieee80211_vif *vif, |
| 2020 | u16 *tim_offset, u16 *tim_length); |
| 2021 | |
| 2022 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2023 | * ieee80211_beacon_get - beacon generation function |
| 2024 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2025 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2026 | * |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 2027 | * See ieee80211_beacon_get_tim(). |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2028 | */ |
Johannes Berg | eddcbb9 | 2009-10-29 08:30:35 +0100 | [diff] [blame] | 2029 | static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, |
| 2030 | struct ieee80211_vif *vif) |
| 2031 | { |
| 2032 | return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); |
| 2033 | } |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2034 | |
| 2035 | /** |
Kalle Valo | 7044cc5 | 2010-01-05 20:16:19 +0200 | [diff] [blame] | 2036 | * ieee80211_pspoll_get - retrieve a PS Poll template |
| 2037 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 2038 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2039 | * |
| 2040 | * Creates a PS Poll a template which can, for example, uploaded to |
| 2041 | * hardware. The template must be updated after association so that correct |
| 2042 | * AID, BSSID and MAC address is used. |
| 2043 | * |
| 2044 | * Note: Caller (or hardware) is responsible for setting the |
| 2045 | * &IEEE80211_FCTL_PM bit. |
| 2046 | */ |
| 2047 | struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw, |
| 2048 | struct ieee80211_vif *vif); |
| 2049 | |
| 2050 | /** |
| 2051 | * ieee80211_nullfunc_get - retrieve a nullfunc template |
| 2052 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 2053 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2054 | * |
| 2055 | * Creates a Nullfunc template which can, for example, uploaded to |
| 2056 | * hardware. The template must be updated after association so that correct |
| 2057 | * BSSID and address is used. |
| 2058 | * |
| 2059 | * Note: Caller (or hardware) is responsible for setting the |
| 2060 | * &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields. |
| 2061 | */ |
| 2062 | struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw, |
| 2063 | struct ieee80211_vif *vif); |
| 2064 | |
| 2065 | /** |
Kalle Valo | 05e54ea | 2010-01-05 20:16:38 +0200 | [diff] [blame] | 2066 | * ieee80211_probereq_get - retrieve a Probe Request template |
| 2067 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
| 2068 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2069 | * @ssid: SSID buffer |
| 2070 | * @ssid_len: length of SSID |
| 2071 | * @ie: buffer containing all IEs except SSID for the template |
| 2072 | * @ie_len: length of the IE buffer |
| 2073 | * |
| 2074 | * Creates a Probe Request template which can, for example, be uploaded to |
| 2075 | * hardware. |
| 2076 | */ |
| 2077 | struct sk_buff *ieee80211_probereq_get(struct ieee80211_hw *hw, |
| 2078 | struct ieee80211_vif *vif, |
| 2079 | const u8 *ssid, size_t ssid_len, |
| 2080 | const u8 *ie, size_t ie_len); |
| 2081 | |
| 2082 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2083 | * ieee80211_rts_get - RTS frame generation function |
| 2084 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2085 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2086 | * @frame: pointer to the frame that is going to be protected by the RTS. |
| 2087 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2088 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2089 | * @rts: The buffer where to store the RTS frame. |
| 2090 | * |
| 2091 | * If the RTS frames are generated by the host system (i.e., not in |
| 2092 | * hardware/firmware), the low-level driver uses this function to receive |
| 2093 | * the next RTS frame from the 802.11 code. The low-level is responsible |
| 2094 | * for calling this function before and RTS frame is needed. |
| 2095 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2096 | void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2097 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2098 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2099 | struct ieee80211_rts *rts); |
| 2100 | |
| 2101 | /** |
| 2102 | * ieee80211_rts_duration - Get the duration field for an RTS frame |
| 2103 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2104 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2105 | * @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] | 2106 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2107 | * |
| 2108 | * If the RTS is generated in firmware, but the host system must provide |
| 2109 | * the duration field, the low-level driver uses this function to receive |
| 2110 | * the duration field value in little-endian byteorder. |
| 2111 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2112 | __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, |
| 2113 | struct ieee80211_vif *vif, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2114 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2115 | |
| 2116 | /** |
| 2117 | * ieee80211_ctstoself_get - CTS-to-self frame generation function |
| 2118 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2119 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2120 | * @frame: pointer to the frame that is going to be protected by the CTS-to-self. |
| 2121 | * @frame_len: the frame length (in octets). |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2122 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2123 | * @cts: The buffer where to store the CTS-to-self frame. |
| 2124 | * |
| 2125 | * If the CTS-to-self frames are generated by the host system (i.e., not in |
| 2126 | * hardware/firmware), the low-level driver uses this function to receive |
| 2127 | * the next CTS-to-self frame from the 802.11 code. The low-level is responsible |
| 2128 | * for calling this function before and CTS-to-self frame is needed. |
| 2129 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2130 | void ieee80211_ctstoself_get(struct ieee80211_hw *hw, |
| 2131 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2132 | const void *frame, size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2133 | const struct ieee80211_tx_info *frame_txctl, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2134 | struct ieee80211_cts *cts); |
| 2135 | |
| 2136 | /** |
| 2137 | * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame |
| 2138 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2139 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2140 | * @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] | 2141 | * @frame_txctl: &struct ieee80211_tx_info of the frame. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2142 | * |
| 2143 | * If the CTS-to-self is generated in firmware, but the host system must provide |
| 2144 | * the duration field, the low-level driver uses this function to receive |
| 2145 | * the duration field value in little-endian byteorder. |
| 2146 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2147 | __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, |
| 2148 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2149 | size_t frame_len, |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2150 | const struct ieee80211_tx_info *frame_txctl); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2151 | |
| 2152 | /** |
| 2153 | * ieee80211_generic_frame_duration - Calculate the duration field for a frame |
| 2154 | * @hw: pointer obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2155 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2156 | * @frame_len: the length of the frame. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2157 | * @rate: the rate at which the frame is going to be transmitted. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2158 | * |
| 2159 | * Calculate the duration field of some generic frame, given its |
| 2160 | * length and transmission rate (in 100kbps). |
| 2161 | */ |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2162 | __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, |
| 2163 | struct ieee80211_vif *vif, |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2164 | size_t frame_len, |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2165 | struct ieee80211_rate *rate); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2166 | |
| 2167 | /** |
| 2168 | * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames |
| 2169 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2170 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2171 | * |
| 2172 | * Function for accessing buffered broadcast and multicast frames. If |
| 2173 | * hardware/firmware does not implement buffering of broadcast/multicast |
| 2174 | * frames when power saving is used, 802.11 code buffers them in the host |
| 2175 | * memory. The low-level driver uses this function to fetch next buffered |
| 2176 | * frame. In most cases, this is used when generating beacon frame. This |
| 2177 | * function returns a pointer to the next buffered skb or NULL if no more |
| 2178 | * buffered frames are available. |
| 2179 | * |
| 2180 | * Note: buffered frames are returned only after DTIM beacon frame was |
| 2181 | * generated with ieee80211_beacon_get() and the low-level driver must thus |
| 2182 | * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns |
| 2183 | * NULL if the previous generated beacon was not DTIM, so the low-level driver |
| 2184 | * does not need to check for DTIM beacons separately and should be able to |
| 2185 | * use common code for all beacons. |
| 2186 | */ |
| 2187 | struct sk_buff * |
Johannes Berg | e039fa4 | 2008-05-15 12:55:29 +0200 | [diff] [blame] | 2188 | ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2189 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2190 | /** |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 2191 | * ieee80211_get_tkip_key - get a TKIP rc4 for skb |
| 2192 | * |
| 2193 | * This function computes a TKIP rc4 key for an skb. It computes |
| 2194 | * a phase 1 key if needed (iv16 wraps around). This function is to |
| 2195 | * be used by drivers which can do HW encryption but need to compute |
| 2196 | * to phase 1/2 key in SW. |
| 2197 | * |
| 2198 | * @keyconf: the parameter passed with the set key |
| 2199 | * @skb: the skb for which the key is needed |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2200 | * @type: TBD |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2201 | * @key: a buffer to which the key will be written |
Emmanuel Grumbach | 5d2cdcd | 2008-03-20 15:06:41 +0200 | [diff] [blame] | 2202 | */ |
| 2203 | void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, |
| 2204 | struct sk_buff *skb, |
| 2205 | enum ieee80211_tkip_key_type type, u8 *key); |
| 2206 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2207 | * ieee80211_wake_queue - wake specific queue |
| 2208 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2209 | * @queue: queue number (counted from zero). |
| 2210 | * |
| 2211 | * Drivers should use this function instead of netif_wake_queue. |
| 2212 | */ |
| 2213 | void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); |
| 2214 | |
| 2215 | /** |
| 2216 | * ieee80211_stop_queue - stop specific queue |
| 2217 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2218 | * @queue: queue number (counted from zero). |
| 2219 | * |
| 2220 | * Drivers should use this function instead of netif_stop_queue. |
| 2221 | */ |
| 2222 | void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); |
| 2223 | |
| 2224 | /** |
Tomas Winkler | 92ab853 | 2008-07-24 21:02:04 +0300 | [diff] [blame] | 2225 | * ieee80211_queue_stopped - test status of the queue |
| 2226 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2227 | * @queue: queue number (counted from zero). |
| 2228 | * |
| 2229 | * Drivers should use this function instead of netif_stop_queue. |
| 2230 | */ |
| 2231 | |
| 2232 | int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); |
| 2233 | |
| 2234 | /** |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2235 | * ieee80211_stop_queues - stop all queues |
| 2236 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2237 | * |
| 2238 | * Drivers should use this function instead of netif_stop_queue. |
| 2239 | */ |
| 2240 | void ieee80211_stop_queues(struct ieee80211_hw *hw); |
| 2241 | |
| 2242 | /** |
| 2243 | * ieee80211_wake_queues - wake all queues |
| 2244 | * @hw: pointer as obtained from ieee80211_alloc_hw(). |
| 2245 | * |
| 2246 | * Drivers should use this function instead of netif_wake_queue. |
| 2247 | */ |
| 2248 | void ieee80211_wake_queues(struct ieee80211_hw *hw); |
| 2249 | |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2250 | /** |
| 2251 | * ieee80211_scan_completed - completed hardware scan |
| 2252 | * |
| 2253 | * When hardware scan offload is used (i.e. the hw_scan() callback is |
| 2254 | * assigned) this function needs to be called by the driver to notify |
| 2255 | * mac80211 that the scan finished. |
| 2256 | * |
| 2257 | * @hw: the hardware that finished the scan |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2258 | * @aborted: set to true if scan was aborted |
Johannes Berg | 75a5f0c | 2007-09-18 17:29:20 -0400 | [diff] [blame] | 2259 | */ |
Johannes Berg | 2a51931 | 2009-02-10 21:25:55 +0100 | [diff] [blame] | 2260 | void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2261 | |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2262 | /** |
Randy Dunlap | 6ef307b | 2008-07-03 13:52:18 -0700 | [diff] [blame] | 2263 | * ieee80211_iterate_active_interfaces - iterate active interfaces |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2264 | * |
| 2265 | * This function iterates over the interfaces associated with a given |
| 2266 | * hardware that are currently active and calls the callback for them. |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 2267 | * This function allows the iterator function to sleep, when the iterator |
| 2268 | * function is atomic @ieee80211_iterate_active_interfaces_atomic can |
| 2269 | * be used. |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2270 | * |
| 2271 | * @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] | 2272 | * @iterator: the iterator function to call |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2273 | * @data: first argument of the iterator function |
| 2274 | */ |
| 2275 | void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, |
| 2276 | void (*iterator)(void *data, u8 *mac, |
Johannes Berg | 32bfd35 | 2007-12-19 01:31:26 +0100 | [diff] [blame] | 2277 | struct ieee80211_vif *vif), |
Johannes Berg | dabeb34 | 2007-11-09 01:57:29 +0100 | [diff] [blame] | 2278 | void *data); |
| 2279 | |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2280 | /** |
Ivo van Doorn | 2f561fe | 2008-05-10 13:40:49 +0200 | [diff] [blame] | 2281 | * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces |
| 2282 | * |
| 2283 | * This function iterates over the interfaces associated with a given |
| 2284 | * hardware that are currently active and calls the callback for them. |
| 2285 | * This function requires the iterator callback function to be atomic, |
| 2286 | * if that is not desired, use @ieee80211_iterate_active_interfaces instead. |
| 2287 | * |
| 2288 | * @hw: the hardware struct of which the interfaces should be iterated over |
| 2289 | * @iterator: the iterator function to call, cannot sleep |
| 2290 | * @data: first argument of the iterator function |
| 2291 | */ |
| 2292 | void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, |
| 2293 | void (*iterator)(void *data, |
| 2294 | u8 *mac, |
| 2295 | struct ieee80211_vif *vif), |
| 2296 | void *data); |
| 2297 | |
| 2298 | /** |
Luis R. Rodriguez | 42935ec | 2009-07-29 20:08:07 -0400 | [diff] [blame] | 2299 | * ieee80211_queue_work - add work onto the mac80211 workqueue |
| 2300 | * |
| 2301 | * Drivers and mac80211 use this to add work onto the mac80211 workqueue. |
| 2302 | * This helper ensures drivers are not queueing work when they should not be. |
| 2303 | * |
| 2304 | * @hw: the hardware struct for the interface we are adding work for |
| 2305 | * @work: the work we want to add onto the mac80211 workqueue |
| 2306 | */ |
| 2307 | void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); |
| 2308 | |
| 2309 | /** |
| 2310 | * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue |
| 2311 | * |
| 2312 | * Drivers and mac80211 use this to queue delayed work onto the mac80211 |
| 2313 | * workqueue. |
| 2314 | * |
| 2315 | * @hw: the hardware struct for the interface we are adding work for |
| 2316 | * @dwork: delayable work to queue onto the mac80211 workqueue |
| 2317 | * @delay: number of jiffies to wait before queueing |
| 2318 | */ |
| 2319 | void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, |
| 2320 | struct delayed_work *dwork, |
| 2321 | unsigned long delay); |
| 2322 | |
| 2323 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2324 | * ieee80211_start_tx_ba_session - Start a tx Block Ack session. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2325 | * @sta: the station for which to start a BA session |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2326 | * @tid: the TID to BA on. |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2327 | * |
| 2328 | * Return: success if addBA request was sent, failure otherwise |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2329 | * |
| 2330 | * Although mac80211/low level driver/user space application can estimate |
| 2331 | * the need to start aggregation on a certain RA/TID, the session level |
| 2332 | * will be managed by the mac80211. |
| 2333 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2334 | int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid); |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2335 | |
| 2336 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2337 | * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2338 | * @vif: &struct ieee80211_vif pointer from the add_interface callback |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2339 | * @ra: receiver address of the BA session recipient. |
| 2340 | * @tid: the TID to BA on. |
| 2341 | * |
| 2342 | * This function must be called by low level driver once it has |
Johannes Berg | 5d22c89 | 2010-06-10 10:21:40 +0200 | [diff] [blame] | 2343 | * finished with preparations for the BA session. It can be called |
| 2344 | * from any context. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2345 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2346 | 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] | 2347 | u16 tid); |
| 2348 | |
| 2349 | /** |
| 2350 | * ieee80211_stop_tx_ba_session - Stop a Block Ack session. |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2351 | * @sta: the station whose BA session to stop |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2352 | * @tid: the TID to stop BA. |
Randy Dunlap | ea2d8b5 | 2008-10-27 09:47:03 -0700 | [diff] [blame] | 2353 | * |
Johannes Berg | 6a8579d | 2010-05-27 14:41:07 +0200 | [diff] [blame] | 2354 | * Return: negative error if the TID is invalid, or no aggregation active |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2355 | * |
| 2356 | * Although mac80211/low level driver/user space application can estimate |
| 2357 | * the need to stop aggregation on a certain RA/TID, the session level |
| 2358 | * will be managed by the mac80211. |
| 2359 | */ |
Johannes Berg | 6a8579d | 2010-05-27 14:41:07 +0200 | [diff] [blame] | 2360 | int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid); |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2361 | |
| 2362 | /** |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2363 | * 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] | 2364 | * @vif: &struct ieee80211_vif pointer from the add_interface callback |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2365 | * @ra: receiver address of the BA session recipient. |
| 2366 | * @tid: the desired TID to BA on. |
| 2367 | * |
| 2368 | * This function must be called by low level driver once it has |
Johannes Berg | 5d22c89 | 2010-06-10 10:21:40 +0200 | [diff] [blame] | 2369 | * finished with preparations for the BA session tear down. It |
| 2370 | * can be called from any context. |
Ron Rindjunsky | 0df3ef4 | 2008-01-28 14:07:15 +0200 | [diff] [blame] | 2371 | */ |
Johannes Berg | c951ad3 | 2009-11-16 12:00:38 +0100 | [diff] [blame] | 2372 | 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] | 2373 | u16 tid); |
| 2374 | |
Mohamed Abbas | 84363e6 | 2008-04-04 16:59:58 -0700 | [diff] [blame] | 2375 | /** |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2376 | * ieee80211_find_sta - find a station |
| 2377 | * |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2378 | * @vif: virtual interface to look for station on |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2379 | * @addr: station's address |
| 2380 | * |
| 2381 | * This function must be called under RCU lock and the |
| 2382 | * resulting pointer is only valid under RCU lock as well. |
| 2383 | */ |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2384 | struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, |
Johannes Berg | 17741cd | 2008-09-11 00:02:02 +0200 | [diff] [blame] | 2385 | const u8 *addr); |
| 2386 | |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2387 | /** |
Johannes Berg | 5ed176e | 2009-11-04 14:42:28 +0100 | [diff] [blame] | 2388 | * ieee80211_find_sta_by_hw - find a station on hardware |
| 2389 | * |
| 2390 | * @hw: pointer as obtained from ieee80211_alloc_hw() |
| 2391 | * @addr: station's address |
| 2392 | * |
| 2393 | * This function must be called under RCU lock and the |
| 2394 | * resulting pointer is only valid under RCU lock as well. |
| 2395 | * |
| 2396 | * NOTE: This function should not be used! When mac80211 is converted |
| 2397 | * internally to properly keep track of stations on multiple |
| 2398 | * virtual interfaces, it will not always know which station to |
| 2399 | * return here since a single address might be used by multiple |
| 2400 | * logical stations (e.g. consider a station connecting to another |
| 2401 | * BSSID on the same AP hardware without disconnecting first). |
| 2402 | * |
| 2403 | * DO NOT USE THIS FUNCTION. |
| 2404 | */ |
| 2405 | struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw, |
| 2406 | const u8 *addr); |
| 2407 | |
| 2408 | /** |
Johannes Berg | af81858 | 2009-11-06 11:35:50 +0100 | [diff] [blame] | 2409 | * ieee80211_sta_block_awake - block station from waking up |
| 2410 | * @hw: the hardware |
| 2411 | * @pubsta: the station |
| 2412 | * @block: whether to block or unblock |
| 2413 | * |
| 2414 | * Some devices require that all frames that are on the queues |
| 2415 | * for a specific station that went to sleep are flushed before |
| 2416 | * a poll response or frames after the station woke up can be |
| 2417 | * delivered to that it. Note that such frames must be rejected |
| 2418 | * by the driver as filtered, with the appropriate status flag. |
| 2419 | * |
| 2420 | * This function allows implementing this mode in a race-free |
| 2421 | * manner. |
| 2422 | * |
| 2423 | * To do this, a driver must keep track of the number of frames |
| 2424 | * still enqueued for a specific station. If this number is not |
| 2425 | * zero when the station goes to sleep, the driver must call |
| 2426 | * this function to force mac80211 to consider the station to |
| 2427 | * be asleep regardless of the station's actual state. Once the |
| 2428 | * number of outstanding frames reaches zero, the driver must |
| 2429 | * call this function again to unblock the station. That will |
| 2430 | * cause mac80211 to be able to send ps-poll responses, and if |
| 2431 | * the station queried in the meantime then frames will also |
| 2432 | * be sent out as a result of this. Additionally, the driver |
| 2433 | * will be notified that the station woke up some time after |
| 2434 | * it is unblocked, regardless of whether the station actually |
| 2435 | * woke up while blocked or not. |
| 2436 | */ |
| 2437 | void ieee80211_sta_block_awake(struct ieee80211_hw *hw, |
| 2438 | struct ieee80211_sta *pubsta, bool block); |
| 2439 | |
| 2440 | /** |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2441 | * ieee80211_beacon_loss - inform hardware does not receive beacons |
| 2442 | * |
Johannes Berg | 1ed32e4 | 2009-12-23 13:15:45 +0100 | [diff] [blame] | 2443 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2444 | * |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 2445 | * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTERING and |
| 2446 | * %IEEE80211_CONF_PS is set, the driver needs to inform whenever the |
Kalle Valo | 04de838 | 2009-03-22 21:57:35 +0200 | [diff] [blame] | 2447 | * hardware is not receiving beacons with this function. |
| 2448 | */ |
| 2449 | void ieee80211_beacon_loss(struct ieee80211_vif *vif); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2450 | |
Juuso Oikarinen | 1e4dcd0 | 2010-03-19 07:14:53 +0200 | [diff] [blame] | 2451 | /** |
| 2452 | * ieee80211_connection_loss - inform hardware has lost connection to the AP |
| 2453 | * |
| 2454 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2455 | * |
| 2456 | * When beacon filtering is enabled with %IEEE80211_HW_BEACON_FILTERING, and |
| 2457 | * %IEEE80211_CONF_PS and %IEEE80211_HW_CONNECTION_MONITOR are set, the driver |
| 2458 | * needs to inform if the connection to the AP has been lost. |
| 2459 | * |
| 2460 | * This function will cause immediate change to disassociated state, |
| 2461 | * without connection recovery attempts. |
| 2462 | */ |
| 2463 | void ieee80211_connection_loss(struct ieee80211_vif *vif); |
| 2464 | |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 2465 | /** |
Juuso Oikarinen | f90754c | 2010-06-21 08:59:39 +0300 | [diff] [blame] | 2466 | * ieee80211_disable_dyn_ps - force mac80211 to temporarily disable dynamic psm |
| 2467 | * |
| 2468 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2469 | * |
| 2470 | * Some hardware require full power save to manage simultaneous BT traffic |
| 2471 | * on the WLAN frequency. Full PSM is required periodically, whenever there are |
| 2472 | * burst of BT traffic. The hardware gets information of BT traffic via |
| 2473 | * hardware co-existence lines, and consequentially requests mac80211 to |
| 2474 | * (temporarily) enter full psm. |
| 2475 | * This function will only temporarily disable dynamic PS, not enable PSM if |
| 2476 | * it was not already enabled. |
| 2477 | * The driver must make sure to re-enable dynamic PS using |
| 2478 | * ieee80211_enable_dyn_ps() if the driver has disabled it. |
| 2479 | * |
| 2480 | */ |
| 2481 | void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif); |
| 2482 | |
| 2483 | /** |
| 2484 | * ieee80211_enable_dyn_ps - restore dynamic psm after being disabled |
| 2485 | * |
| 2486 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2487 | * |
| 2488 | * This function restores dynamic PS after being temporarily disabled via |
| 2489 | * ieee80211_disable_dyn_ps(). Each ieee80211_disable_dyn_ps() call must |
| 2490 | * be coupled with an eventual call to this function. |
| 2491 | * |
| 2492 | */ |
| 2493 | void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif); |
| 2494 | |
| 2495 | /** |
Juuso Oikarinen | a97c13c | 2010-03-23 09:02:34 +0200 | [diff] [blame] | 2496 | * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring |
| 2497 | * rssi threshold triggered |
| 2498 | * |
| 2499 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2500 | * @rssi_event: the RSSI trigger event type |
| 2501 | * @gfp: context flags |
| 2502 | * |
| 2503 | * When the %IEEE80211_HW_SUPPORTS_CQM_RSSI is set, and a connection quality |
| 2504 | * monitoring is configured with an rssi threshold, the driver will inform |
| 2505 | * whenever the rssi level reaches the threshold. |
| 2506 | */ |
| 2507 | void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, |
| 2508 | enum nl80211_cqm_rssi_threshold_event rssi_event, |
| 2509 | gfp_t gfp); |
| 2510 | |
Johannes Berg | 5ce6e43 | 2010-05-11 16:20:57 +0200 | [diff] [blame] | 2511 | /** |
| 2512 | * ieee80211_chswitch_done - Complete channel switch process |
| 2513 | * @vif: &struct ieee80211_vif pointer from the add_interface callback. |
| 2514 | * @success: make the channel switch successful or not |
| 2515 | * |
| 2516 | * Complete the channel switch post-process: set the new operational channel |
| 2517 | * and wake up the suspended queues. |
| 2518 | */ |
| 2519 | void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success); |
| 2520 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2521 | /* Rate control API */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2522 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2523 | /** |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 2524 | * enum rate_control_changed - flags to indicate which parameter changed |
| 2525 | * |
| 2526 | * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have |
| 2527 | * changed, rate control algorithm can update its internal state if needed. |
| 2528 | */ |
| 2529 | enum rate_control_changed { |
| 2530 | IEEE80211_RC_HT_CHANGED = BIT(0) |
| 2531 | }; |
| 2532 | |
| 2533 | /** |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2534 | * struct ieee80211_tx_rate_control - rate control information for/from RC algo |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2535 | * |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2536 | * @hw: The hardware the algorithm is invoked for. |
| 2537 | * @sband: The band this frame is being transmitted on. |
| 2538 | * @bss_conf: the current BSS configuration |
| 2539 | * @reported_rate: The rate control algorithm can fill this in to indicate |
| 2540 | * which rate should be reported to userspace as the current rate and |
| 2541 | * used for rate calculations in the mesh network. |
| 2542 | * @rts: whether RTS will be used for this frame because it is longer than the |
| 2543 | * RTS threshold |
| 2544 | * @short_preamble: whether mac80211 will request short-preamble transmission |
| 2545 | * if the selected rate supports it |
| 2546 | * @max_rate_idx: user-requested maximum rate (not MCS for now) |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 2547 | * (deprecated; this will be removed once drivers get updated to use |
| 2548 | * rate_idx_mask) |
| 2549 | * @rate_idx_mask: user-requested rate mask (not MCS for now) |
Johannes Berg | e25cf4a | 2008-10-23 08:51:20 +0200 | [diff] [blame] | 2550 | * @skb: the skb that will be transmitted, the control information in it needs |
| 2551 | * to be filled in |
Jouni Malinen | e00cfce | 2009-12-29 12:59:19 +0200 | [diff] [blame] | 2552 | * @ap: whether this frame is sent out in AP mode |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2553 | */ |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2554 | struct ieee80211_tx_rate_control { |
| 2555 | struct ieee80211_hw *hw; |
| 2556 | struct ieee80211_supported_band *sband; |
| 2557 | struct ieee80211_bss_conf *bss_conf; |
| 2558 | struct sk_buff *skb; |
| 2559 | struct ieee80211_tx_rate reported_rate; |
| 2560 | bool rts, short_preamble; |
| 2561 | u8 max_rate_idx; |
Jouni Malinen | 37eb0b1 | 2010-01-06 13:09:08 +0200 | [diff] [blame] | 2562 | u32 rate_idx_mask; |
Jouni Malinen | e00cfce | 2009-12-29 12:59:19 +0200 | [diff] [blame] | 2563 | bool ap; |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2564 | }; |
| 2565 | |
| 2566 | struct rate_control_ops { |
| 2567 | struct module *module; |
| 2568 | const char *name; |
| 2569 | void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2570 | void (*free)(void *priv); |
| 2571 | |
| 2572 | void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); |
| 2573 | void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, |
| 2574 | struct ieee80211_sta *sta, void *priv_sta); |
Sujith | 81cb762 | 2009-02-12 11:38:37 +0530 | [diff] [blame] | 2575 | void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, |
| 2576 | struct ieee80211_sta *sta, |
Sujith | 4fa0043 | 2010-03-01 14:42:57 +0530 | [diff] [blame] | 2577 | void *priv_sta, u32 changed, |
| 2578 | enum nl80211_channel_type oper_chan_type); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2579 | void (*free_sta)(void *priv, struct ieee80211_sta *sta, |
| 2580 | void *priv_sta); |
| 2581 | |
| 2582 | void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, |
| 2583 | struct ieee80211_sta *sta, void *priv_sta, |
| 2584 | struct sk_buff *skb); |
Johannes Berg | e6a9854 | 2008-10-21 12:40:02 +0200 | [diff] [blame] | 2585 | void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, |
| 2586 | struct ieee80211_tx_rate_control *txrc); |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2587 | |
| 2588 | void (*add_sta_debugfs)(void *priv, void *priv_sta, |
| 2589 | struct dentry *dir); |
| 2590 | void (*remove_sta_debugfs)(void *priv, void *priv_sta); |
| 2591 | }; |
| 2592 | |
| 2593 | static inline int rate_supported(struct ieee80211_sta *sta, |
| 2594 | enum ieee80211_band band, |
| 2595 | int index) |
| 2596 | { |
| 2597 | return (sta == NULL || sta->supp_rates[band] & BIT(index)); |
| 2598 | } |
| 2599 | |
Luis R. Rodriguez | 4c6d4f5 | 2009-07-16 10:05:41 -0700 | [diff] [blame] | 2600 | /** |
| 2601 | * rate_control_send_low - helper for drivers for management/no-ack frames |
| 2602 | * |
| 2603 | * Rate control algorithms that agree to use the lowest rate to |
| 2604 | * send management frames and NO_ACK data with the respective hw |
| 2605 | * retries should use this in the beginning of their mac80211 get_rate |
| 2606 | * callback. If true is returned the rate control can simply return. |
| 2607 | * If false is returned we guarantee that sta and sta and priv_sta is |
| 2608 | * not null. |
| 2609 | * |
| 2610 | * Rate control algorithms wishing to do more intelligent selection of |
| 2611 | * rate for multicast/broadcast frames may choose to not use this. |
| 2612 | * |
| 2613 | * @sta: &struct ieee80211_sta pointer to the target destination. Note |
| 2614 | * that this may be null. |
| 2615 | * @priv_sta: private rate control structure. This may be null. |
| 2616 | * @txrc: rate control information we sholud populate for mac80211. |
| 2617 | */ |
| 2618 | bool rate_control_send_low(struct ieee80211_sta *sta, |
| 2619 | void *priv_sta, |
| 2620 | struct ieee80211_tx_rate_control *txrc); |
| 2621 | |
| 2622 | |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2623 | static inline s8 |
| 2624 | rate_lowest_index(struct ieee80211_supported_band *sband, |
| 2625 | struct ieee80211_sta *sta) |
| 2626 | { |
| 2627 | int i; |
| 2628 | |
| 2629 | for (i = 0; i < sband->n_bitrates; i++) |
| 2630 | if (rate_supported(sta, sband->band, i)) |
| 2631 | return i; |
| 2632 | |
| 2633 | /* warn when we cannot find a rate. */ |
| 2634 | WARN_ON(1); |
| 2635 | |
| 2636 | return 0; |
| 2637 | } |
| 2638 | |
Luis R. Rodriguez | b770b43 | 2009-07-16 10:15:09 -0700 | [diff] [blame] | 2639 | static inline |
| 2640 | bool rate_usable_index_exists(struct ieee80211_supported_band *sband, |
| 2641 | struct ieee80211_sta *sta) |
| 2642 | { |
| 2643 | unsigned int i; |
| 2644 | |
| 2645 | for (i = 0; i < sband->n_bitrates; i++) |
| 2646 | if (rate_supported(sta, sband->band, i)) |
| 2647 | return true; |
| 2648 | return false; |
| 2649 | } |
Johannes Berg | 4b7679a | 2008-09-18 18:14:18 +0200 | [diff] [blame] | 2650 | |
| 2651 | int ieee80211_rate_control_register(struct rate_control_ops *ops); |
| 2652 | void ieee80211_rate_control_unregister(struct rate_control_ops *ops); |
| 2653 | |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2654 | static inline bool |
| 2655 | conf_is_ht20(struct ieee80211_conf *conf) |
| 2656 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2657 | return conf->channel_type == NL80211_CHAN_HT20; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2658 | } |
| 2659 | |
| 2660 | static inline bool |
| 2661 | conf_is_ht40_minus(struct ieee80211_conf *conf) |
| 2662 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2663 | return conf->channel_type == NL80211_CHAN_HT40MINUS; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2664 | } |
| 2665 | |
| 2666 | static inline bool |
| 2667 | conf_is_ht40_plus(struct ieee80211_conf *conf) |
| 2668 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2669 | return conf->channel_type == NL80211_CHAN_HT40PLUS; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2670 | } |
| 2671 | |
| 2672 | static inline bool |
| 2673 | conf_is_ht40(struct ieee80211_conf *conf) |
| 2674 | { |
| 2675 | return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); |
| 2676 | } |
| 2677 | |
| 2678 | static inline bool |
| 2679 | conf_is_ht(struct ieee80211_conf *conf) |
| 2680 | { |
Johannes Berg | 4797938 | 2009-01-07 10:13:27 +0100 | [diff] [blame] | 2681 | return conf->channel_type != NL80211_CHAN_NO_HT; |
Luis R. Rodriguez | 10c806b | 2008-12-23 15:58:36 -0800 | [diff] [blame] | 2682 | } |
| 2683 | |
Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame] | 2684 | #endif /* MAC80211_H */ |