| /* | |
| * mac80211 <-> driver interface | |
| * | |
| * Copyright 2002-2005, Devicescape Software, Inc. | |
| * Copyright 2006-2007 Jiri Benc <[email protected]> | |
| * Copyright 2007-2008 Johannes Berg <[email protected]> | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License version 2 as | |
| * published by the Free Software Foundation. | |
| */ | |
| #ifndef MAC80211_H | |
| #define MAC80211_H | |
| #include <linux/kernel.h> | |
| #include <linux/if_ether.h> | |
| #include <linux/skbuff.h> | |
| #include <linux/wireless.h> | |
| #include <linux/device.h> | |
| #include <linux/ieee80211.h> | |
| #include <net/cfg80211.h> | |
| /** | |
| * DOC: Introduction | |
| * | |
| * mac80211 is the Linux stack for 802.11 hardware that implements | |
| * only partial functionality in hard- or firmware. This document | |
| * defines the interface between mac80211 and low-level hardware | |
| * drivers. | |
| */ | |
| /** | |
| * DOC: Calling mac80211 from interrupts | |
| * | |
| * Only ieee80211_tx_status_irqsafe() and ieee80211_rx_irqsafe() can be | |
| * called in hardware interrupt context. The low-level driver must not call any | |
| * other functions in hardware interrupt context. If there is a need for such | |
| * call, the low-level driver should first ACK the interrupt and perform the | |
| * IEEE 802.11 code call after this, e.g. from a scheduled workqueue or even | |
| * tasklet function. | |
| * | |
| * NOTE: If the driver opts to use the _irqsafe() functions, it may not also | |
| * use the non-IRQ-safe functions! | |
| */ | |
| /** | |
| * DOC: Warning | |
| * | |
| * If you're reading this document and not the header file itself, it will | |
| * be incomplete because not all documentation has been converted yet. | |
| */ | |
| /** | |
| * DOC: Frame format | |
| * | |
| * As a general rule, when frames are passed between mac80211 and the driver, | |
| * they start with the IEEE 802.11 header and include the same octets that are | |
| * sent over the air except for the FCS which should be calculated by the | |
| * hardware. | |
| * | |
| * There are, however, various exceptions to this rule for advanced features: | |
| * | |
| * The first exception is for hardware encryption and decryption offload | |
| * where the IV/ICV may or may not be generated in hardware. | |
| * | |
| * Secondly, when the hardware handles fragmentation, the frame handed to | |
| * the driver from mac80211 is the MSDU, not the MPDU. | |
| * | |
| * Finally, for received frames, the driver is able to indicate that it has | |
| * filled a radiotap header and put that in front of the frame; if it does | |
| * not do so then mac80211 may add this under certain circumstances. | |
| */ | |
| /** | |
| * DOC: mac80211 workqueue | |
| * | |
| * mac80211 provides its own workqueue for drivers and internal mac80211 use. | |
| * The workqueue is a single threaded workqueue and can only be accessed by | |
| * helpers for sanity checking. Drivers must ensure all work added onto the | |
| * mac80211 workqueue should be cancelled on the driver stop() callback. | |
| * | |
| * mac80211 will flushed the workqueue upon interface removal and during | |
| * suspend. | |
| * | |
| * All work performed on the mac80211 workqueue must not acquire the RTNL lock. | |
| * | |
| */ | |
| /** | |
| * enum ieee80211_max_queues - maximum number of queues | |
| * | |
| * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. | |
| */ | |
| enum ieee80211_max_queues { | |
| IEEE80211_MAX_QUEUES = 4, | |
| }; | |
| /** | |
| * struct ieee80211_tx_queue_params - transmit queue configuration | |
| * | |
| * The information provided in this structure is required for QoS | |
| * transmit queue configuration. Cf. IEEE 802.11 7.3.2.29. | |
| * | |
| * @aifs: arbitration interframe space [0..255] | |
| * @cw_min: minimum contention window [a value of the form | |
| * 2^n-1 in the range 1..32767] | |
| * @cw_max: maximum contention window [like @cw_min] | |
| * @txop: maximum burst time in units of 32 usecs, 0 meaning disabled | |
| */ | |
| struct ieee80211_tx_queue_params { | |
| u16 txop; | |
| u16 cw_min; | |
| u16 cw_max; | |
| u8 aifs; | |
| }; | |
| /** | |
| * struct ieee80211_tx_queue_stats - transmit queue statistics | |
| * | |
| * @len: number of packets in queue | |
| * @limit: queue length limit | |
| * @count: number of frames sent | |
| */ | |
| struct ieee80211_tx_queue_stats { | |
| unsigned int len; | |
| unsigned int limit; | |
| unsigned int count; | |
| }; | |
| struct ieee80211_low_level_stats { | |
| unsigned int dot11ACKFailureCount; | |
| unsigned int dot11RTSFailureCount; | |
| unsigned int dot11FCSErrorCount; | |
| unsigned int dot11RTSSuccessCount; | |
| }; | |
| /** | |
| * enum ieee80211_bss_change - BSS change notification flags | |
| * | |
| * These flags are used with the bss_info_changed() callback | |
| * to indicate which BSS parameter changed. | |
| * | |
| * @BSS_CHANGED_ASSOC: association status changed (associated/disassociated), | |
| * also implies a change in the AID. | |
| * @BSS_CHANGED_ERP_CTS_PROT: CTS protection changed | |
| * @BSS_CHANGED_ERP_PREAMBLE: preamble changed | |
| * @BSS_CHANGED_ERP_SLOT: slot timing changed | |
| * @BSS_CHANGED_HT: 802.11n parameters changed | |
| * @BSS_CHANGED_BASIC_RATES: Basic rateset changed | |
| * @BSS_CHANGED_BEACON_INT: Beacon interval changed | |
| * @BSS_CHANGED_BSSID: BSSID changed, for whatever | |
| * reason (IBSS and managed mode) | |
| * @BSS_CHANGED_BEACON: Beacon data changed, retrieve | |
| * new beacon (beaconing modes) | |
| * @BSS_CHANGED_BEACON_ENABLED: Beaconing should be | |
| * enabled/disabled (beaconing modes) | |
| */ | |
| enum ieee80211_bss_change { | |
| BSS_CHANGED_ASSOC = 1<<0, | |
| BSS_CHANGED_ERP_CTS_PROT = 1<<1, | |
| BSS_CHANGED_ERP_PREAMBLE = 1<<2, | |
| BSS_CHANGED_ERP_SLOT = 1<<3, | |
| BSS_CHANGED_HT = 1<<4, | |
| BSS_CHANGED_BASIC_RATES = 1<<5, | |
| BSS_CHANGED_BEACON_INT = 1<<6, | |
| BSS_CHANGED_BSSID = 1<<7, | |
| BSS_CHANGED_BEACON = 1<<8, | |
| BSS_CHANGED_BEACON_ENABLED = 1<<9, | |
| }; | |
| /** | |
| * struct ieee80211_bss_conf - holds the BSS's changing parameters | |
| * | |
| * This structure keeps information about a BSS (and an association | |
| * to that BSS) that can change during the lifetime of the BSS. | |
| * | |
| * @assoc: association status | |
| * @aid: association ID number, valid only when @assoc is true | |
| * @use_cts_prot: use CTS protection | |
| * @use_short_preamble: use 802.11b short preamble; | |
| * if the hardware cannot handle this it must set the | |
| * IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE hardware flag | |
| * @use_short_slot: use short slot time (only relevant for ERP); | |
| * if the hardware cannot handle this it must set the | |
| * IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE hardware flag | |
| * @dtim_period: num of beacons before the next DTIM, for PSM | |
| * @timestamp: beacon timestamp | |
| * @beacon_int: beacon interval | |
| * @assoc_capability: capabilities taken from assoc resp | |
| * @basic_rates: bitmap of basic rates, each bit stands for an | |
| * index into the rate table configured by the driver in | |
| * the current band. | |
| * @bssid: The BSSID for this BSS | |
| * @enable_beacon: whether beaconing should be enabled or not | |
| * @ht_operation_mode: HT operation mode (like in &struct ieee80211_ht_info). | |
| * This field is only valid when the channel type is one of the HT types. | |
| */ | |
| struct ieee80211_bss_conf { | |
| const u8 *bssid; | |
| /* association related data */ | |
| bool assoc; | |
| u16 aid; | |
| /* erp related data */ | |
| bool use_cts_prot; | |
| bool use_short_preamble; | |
| bool use_short_slot; | |
| bool enable_beacon; | |
| u8 dtim_period; | |
| u16 beacon_int; | |
| u16 assoc_capability; | |
| u64 timestamp; | |
| u32 basic_rates; | |
| u16 ht_operation_mode; | |
| }; | |
| /** | |
| * enum mac80211_tx_control_flags - flags to describe transmission information/status | |
| * | |
| * These flags are used with the @flags member of &ieee80211_tx_info. | |
| * | |
| * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame. | |
| * @IEEE80211_TX_CTL_ASSIGN_SEQ: The driver has to assign a sequence | |
| * number to this frame, taking care of not overwriting the fragment | |
| * number and increasing the sequence number only when the | |
| * IEEE80211_TX_CTL_FIRST_FRAGMENT flag is set. mac80211 will properly | |
| * assign sequence numbers to QoS-data frames but cannot do so correctly | |
| * for non-QoS-data and management frames because beacons need them from | |
| * that counter as well and mac80211 cannot guarantee proper sequencing. | |
| * If this flag is set, the driver should instruct the hardware to | |
| * assign a sequence number to the frame or assign one itself. Cf. IEEE | |
| * 802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for | |
| * beacons and always be clear for frames without a sequence number field. | |
| * @IEEE80211_TX_CTL_NO_ACK: tell the low level not to wait for an ack | |
| * @IEEE80211_TX_CTL_CLEAR_PS_FILT: clear powersave filter for destination | |
| * station | |
| * @IEEE80211_TX_CTL_FIRST_FRAGMENT: this is a first fragment of the frame | |
| * @IEEE80211_TX_CTL_SEND_AFTER_DTIM: send this frame after DTIM beacon | |
| * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU | |
| * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211. | |
| * @IEEE80211_TX_STAT_TX_FILTERED: The frame was not transmitted | |
| * because the destination STA was in powersave mode. Note that to | |
| * avoid race conditions, the filter must be set by the hardware or | |
| * firmware upon receiving a frame that indicates that the station | |
| * went to sleep (must be done on device to filter frames already on | |
| * the queue) and may only be unset after mac80211 gives the OK for | |
| * that by setting the IEEE80211_TX_CTL_CLEAR_PS_FILT (see above), | |
| * since only then is it guaranteed that no more frames are in the | |
| * hardware queue. | |
| * @IEEE80211_TX_STAT_ACK: Frame was acknowledged | |
| * @IEEE80211_TX_STAT_AMPDU: The frame was aggregated, so status | |
| * is for the whole aggregation. | |
| * @IEEE80211_TX_STAT_AMPDU_NO_BACK: no block ack was returned, | |
| * so consider using block ack request (BAR). | |
| * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be | |
| * set by rate control algorithms to indicate probe rate, will | |
| * be cleared for fragmented frames (except on the last fragment) | |
| * @IEEE80211_TX_INTFL_RCALGO: mac80211 internal flag, do not test or | |
| * set this flag in the driver; indicates that the rate control | |
| * algorithm was used and should be notified of TX status | |
| * @IEEE80211_TX_INTFL_NEED_TXPROCESSING: completely internal to mac80211, | |
| * used to indicate that a pending frame requires TX processing before | |
| * it can be sent out. | |
| * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211, | |
| * used to indicate that a frame was already retried due to PS | |
| * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211, | |
| * used to indicate frame should not be encrypted | |
| * @IEEE80211_TX_CTL_PSPOLL_RESPONSE: (internal?) | |
| * This frame is a response to a PS-poll frame and should be sent | |
| * although the station is in powersave mode. | |
| * @IEEE80211_TX_CTL_MORE_FRAMES: More frames will be passed to the | |
| * transmit function after the current frame, this can be used | |
| * by drivers to kick the DMA queue only if unset or when the | |
| * queue gets full. | |
| */ | |
| enum mac80211_tx_control_flags { | |
| IEEE80211_TX_CTL_REQ_TX_STATUS = BIT(0), | |
| IEEE80211_TX_CTL_ASSIGN_SEQ = BIT(1), | |
| IEEE80211_TX_CTL_NO_ACK = BIT(2), | |
| IEEE80211_TX_CTL_CLEAR_PS_FILT = BIT(3), | |
| IEEE80211_TX_CTL_FIRST_FRAGMENT = BIT(4), | |
| IEEE80211_TX_CTL_SEND_AFTER_DTIM = BIT(5), | |
| IEEE80211_TX_CTL_AMPDU = BIT(6), | |
| IEEE80211_TX_CTL_INJECTED = BIT(7), | |
| IEEE80211_TX_STAT_TX_FILTERED = BIT(8), | |
| IEEE80211_TX_STAT_ACK = BIT(9), | |
| IEEE80211_TX_STAT_AMPDU = BIT(10), | |
| IEEE80211_TX_STAT_AMPDU_NO_BACK = BIT(11), | |
| IEEE80211_TX_CTL_RATE_CTRL_PROBE = BIT(12), | |
| IEEE80211_TX_INTFL_RCALGO = BIT(13), | |
| IEEE80211_TX_INTFL_NEED_TXPROCESSING = BIT(14), | |
| IEEE80211_TX_INTFL_RETRIED = BIT(15), | |
| IEEE80211_TX_INTFL_DONT_ENCRYPT = BIT(16), | |
| IEEE80211_TX_CTL_PSPOLL_RESPONSE = BIT(17), | |
| IEEE80211_TX_CTL_MORE_FRAMES = BIT(18), | |
| }; | |
| /** | |
| * enum mac80211_rate_control_flags - per-rate flags set by the | |
| * Rate Control algorithm. | |
| * | |
| * These flags are set by the Rate control algorithm for each rate during tx, | |
| * in the @flags member of struct ieee80211_tx_rate. | |
| * | |
| * @IEEE80211_TX_RC_USE_RTS_CTS: Use RTS/CTS exchange for this rate. | |
| * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required. | |
| * This is set if the current BSS requires ERP protection. | |
| * @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble. | |
| * @IEEE80211_TX_RC_MCS: HT rate. | |
| * @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in | |
| * Greenfield mode. | |
| * @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz. | |
| * @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the | |
| * adjacent 20 MHz channels, if the current channel type is | |
| * NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS. | |
| * @IEEE80211_TX_RC_SHORT_GI: Short Guard interval should be used for this rate. | |
| */ | |
| enum mac80211_rate_control_flags { | |
| IEEE80211_TX_RC_USE_RTS_CTS = BIT(0), | |
| IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1), | |
| IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2), | |
| /* rate index is an MCS rate number instead of an index */ | |
| IEEE80211_TX_RC_MCS = BIT(3), | |
| IEEE80211_TX_RC_GREEN_FIELD = BIT(4), | |
| IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5), | |
| IEEE80211_TX_RC_DUP_DATA = BIT(6), | |
| IEEE80211_TX_RC_SHORT_GI = BIT(7), | |
| }; | |
| /* there are 40 bytes if you don't need the rateset to be kept */ | |
| #define IEEE80211_TX_INFO_DRIVER_DATA_SIZE 40 | |
| /* if you do need the rateset, then you have less space */ | |
| #define IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE 24 | |
| /* maximum number of rate stages */ | |
| #define IEEE80211_TX_MAX_RATES 5 | |
| /** | |
| * struct ieee80211_tx_rate - rate selection/status | |
| * | |
| * @idx: rate index to attempt to send with | |
| * @flags: rate control flags (&enum mac80211_rate_control_flags) | |
| * @count: number of tries in this rate before going to the next rate | |
| * | |
| * A value of -1 for @idx indicates an invalid rate and, if used | |
| * in an array of retry rates, that no more rates should be tried. | |
| * | |
| * When used for transmit status reporting, the driver should | |
| * always report the rate along with the flags it used. | |
| * | |
| * &struct ieee80211_tx_info contains an array of these structs | |
| * in the control information, and it will be filled by the rate | |
| * control algorithm according to what should be sent. For example, | |
| * if this array contains, in the format { <idx>, <count> } the | |
| * information | |
| * { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 } | |
| * then this means that the frame should be transmitted | |
| * up to twice at rate 3, up to twice at rate 2, and up to four | |
| * times at rate 1 if it doesn't get acknowledged. Say it gets | |
| * acknowledged by the peer after the fifth attempt, the status | |
| * information should then contain | |
| * { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ... | |
| * since it was transmitted twice at rate 3, twice at rate 2 | |
| * and once at rate 1 after which we received an acknowledgement. | |
| */ | |
| struct ieee80211_tx_rate { | |
| s8 idx; | |
| u8 count; | |
| u8 flags; | |
| } __attribute__((packed)); | |
| /** | |
| * struct ieee80211_tx_info - skb transmit information | |
| * | |
| * This structure is placed in skb->cb for three uses: | |
| * (1) mac80211 TX control - mac80211 tells the driver what to do | |
| * (2) driver internal use (if applicable) | |
| * (3) TX status information - driver tells mac80211 what happened | |
| * | |
| * The TX control's sta pointer is only valid during the ->tx call, | |
| * it may be NULL. | |
| * | |
| * @flags: transmit info flags, defined above | |
| * @band: the band to transmit on (use for checking for races) | |
| * @antenna_sel_tx: antenna to use, 0 for automatic diversity | |
| * @pad: padding, ignore | |
| * @control: union for control data | |
| * @status: union for status data | |
| * @driver_data: array of driver_data pointers | |
| * @ampdu_ack_len: number of acked aggregated frames. | |
| * relevant only if IEEE80211_TX_STATUS_AMPDU was set. | |
| * @ampdu_ack_map: block ack bit map for the aggregation. | |
| * relevant only if IEEE80211_TX_STATUS_AMPDU was set. | |
| * @ampdu_len: number of aggregated frames. | |
| * relevant only if IEEE80211_TX_STATUS_AMPDU was set. | |
| * @ack_signal: signal strength of the ACK frame | |
| */ | |
| struct ieee80211_tx_info { | |
| /* common information */ | |
| u32 flags; | |
| u8 band; | |
| u8 antenna_sel_tx; | |
| /* 2 byte hole */ | |
| u8 pad[2]; | |
| union { | |
| struct { | |
| union { | |
| /* rate control */ | |
| struct { | |
| struct ieee80211_tx_rate rates[ | |
| IEEE80211_TX_MAX_RATES]; | |
| s8 rts_cts_rate_idx; | |
| }; | |
| /* only needed before rate control */ | |
| unsigned long jiffies; | |
| }; | |
| /* NB: vif can be NULL for injected frames */ | |
| struct ieee80211_vif *vif; | |
| struct ieee80211_key_conf *hw_key; | |
| struct ieee80211_sta *sta; | |
| } control; | |
| struct { | |
| struct ieee80211_tx_rate rates[IEEE80211_TX_MAX_RATES]; | |
| u8 ampdu_ack_len; | |
| u64 ampdu_ack_map; | |
| int ack_signal; | |
| u8 ampdu_len; | |
| /* 7 bytes free */ | |
| } status; | |
| struct { | |
| struct ieee80211_tx_rate driver_rates[ | |
| IEEE80211_TX_MAX_RATES]; | |
| void *rate_driver_data[ | |
| IEEE80211_TX_INFO_RATE_DRIVER_DATA_SIZE / sizeof(void *)]; | |
| }; | |
| void *driver_data[ | |
| IEEE80211_TX_INFO_DRIVER_DATA_SIZE / sizeof(void *)]; | |
| }; | |
| }; | |
| static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb) | |
| { | |
| return (struct ieee80211_tx_info *)skb->cb; | |
| } | |
| static inline struct ieee80211_rx_status *IEEE80211_SKB_RXCB(struct sk_buff *skb) | |
| { | |
| return (struct ieee80211_rx_status *)skb->cb; | |
| } | |
| /** | |
| * ieee80211_tx_info_clear_status - clear TX status | |
| * | |
| * @info: The &struct ieee80211_tx_info to be cleared. | |
| * | |
| * When the driver passes an skb back to mac80211, it must report | |
| * a number of things in TX status. This function clears everything | |
| * in the TX status but the rate control information (it does clear | |
| * the count since you need to fill that in anyway). | |
| * | |
| * NOTE: You can only use this function if you do NOT use | |
| * info->driver_data! Use info->rate_driver_data | |
| * instead if you need only the less space that allows. | |
| */ | |
| static inline void | |
| ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info) | |
| { | |
| int i; | |
| BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != | |
| offsetof(struct ieee80211_tx_info, control.rates)); | |
| BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != | |
| offsetof(struct ieee80211_tx_info, driver_rates)); | |
| BUILD_BUG_ON(offsetof(struct ieee80211_tx_info, status.rates) != 8); | |
| /* clear the rate counts */ | |
| for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) | |
| info->status.rates[i].count = 0; | |
| BUILD_BUG_ON( | |
| offsetof(struct ieee80211_tx_info, status.ampdu_ack_len) != 23); | |
| memset(&info->status.ampdu_ack_len, 0, | |
| sizeof(struct ieee80211_tx_info) - | |
| offsetof(struct ieee80211_tx_info, status.ampdu_ack_len)); | |
| } | |
| /** | |
| * enum mac80211_rx_flags - receive flags | |
| * | |
| * These flags are used with the @flag member of &struct ieee80211_rx_status. | |
| * @RX_FLAG_MMIC_ERROR: Michael MIC error was reported on this frame. | |
| * Use together with %RX_FLAG_MMIC_STRIPPED. | |
| * @RX_FLAG_DECRYPTED: This frame was decrypted in hardware. | |
| * @RX_FLAG_MMIC_STRIPPED: the Michael MIC is stripped off this frame, | |
| * verification has been done by the hardware. | |
| * @RX_FLAG_IV_STRIPPED: The IV/ICV are stripped from this frame. | |
| * If this flag is set, the stack cannot do any replay detection | |
| * hence the driver or hardware will have to do that. | |
| * @RX_FLAG_FAILED_FCS_CRC: Set this flag if the FCS check failed on | |
| * the frame. | |
| * @RX_FLAG_FAILED_PLCP_CRC: Set this flag if the PCLP check failed on | |
| * the frame. | |
| * @RX_FLAG_TSFT: The timestamp passed in the RX status (@mactime field) | |
| * is valid. This is useful in monitor mode and necessary for beacon frames | |
| * to enable IBSS merging. | |
| * @RX_FLAG_SHORTPRE: Short preamble was used for this frame | |
| * @RX_FLAG_HT: HT MCS was used and rate_idx is MCS index | |
| * @RX_FLAG_40MHZ: HT40 (40 MHz) was used | |
| * @RX_FLAG_SHORT_GI: Short guard interval was used | |
| * @RX_FLAG_INTERNAL_CMTR: set internally after frame was reported | |
| * on cooked monitor to avoid double-reporting it for multiple | |
| * virtual interfaces | |
| */ | |
| enum mac80211_rx_flags { | |
| RX_FLAG_MMIC_ERROR = 1<<0, | |
| RX_FLAG_DECRYPTED = 1<<1, | |
| RX_FLAG_MMIC_STRIPPED = 1<<3, | |
| RX_FLAG_IV_STRIPPED = 1<<4, | |
| RX_FLAG_FAILED_FCS_CRC = 1<<5, | |
| RX_FLAG_FAILED_PLCP_CRC = 1<<6, | |
| RX_FLAG_TSFT = 1<<7, | |
| RX_FLAG_SHORTPRE = 1<<8, | |
| RX_FLAG_HT = 1<<9, | |
| RX_FLAG_40MHZ = 1<<10, | |
| RX_FLAG_SHORT_GI = 1<<11, | |
| RX_FLAG_INTERNAL_CMTR = 1<<12, | |
| }; | |
| /** | |
| * struct ieee80211_rx_status - receive status | |
| * | |
| * The low-level driver should provide this information (the subset | |
| * supported by hardware) to the 802.11 code with each received | |
| * frame, in the skb's control buffer (cb). | |
| * | |
| * @mactime: value in microseconds of the 64-bit Time Synchronization Function | |
| * (TSF) timer when the first data symbol (MPDU) arrived at the hardware. | |
| * @band: the active band when this frame was received | |
| * @freq: frequency the radio was tuned to when receiving this frame, in MHz | |
| * @signal: signal strength when receiving this frame, either in dBm, in dB or | |
| * unspecified depending on the hardware capabilities flags | |
| * @IEEE80211_HW_SIGNAL_* | |
| * @noise: noise when receiving this frame, in dBm. | |
| * @antenna: antenna used | |
| * @rate_idx: index of data rate into band's supported rates or MCS index if | |
| * HT rates are use (RX_FLAG_HT) | |
| * @flag: %RX_FLAG_* | |
| */ | |
| struct ieee80211_rx_status { | |
| u64 mactime; | |
| enum ieee80211_band band; | |
| int freq; | |
| int signal; | |
| int noise; | |
| int antenna; | |
| int rate_idx; | |
| int flag; | |
| }; | |
| /** | |
| * enum ieee80211_conf_flags - configuration flags | |
| * | |
| * Flags to define PHY configuration options | |
| * | |
| * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this | |
| * to determine for example whether to calculate timestamps for packets | |
| * or not, do not use instead of filter flags! | |
| * @IEEE80211_CONF_PS: Enable 802.11 power save mode (managed mode only) | |
| * @IEEE80211_CONF_IDLE: The device is running, but idle; if the flag is set | |
| * the driver should be prepared to handle configuration requests but | |
| * may turn the device off as much as possible. Typically, this flag will | |
| * be set when an interface is set UP but not associated or scanning, but | |
| * it can also be unset in that case when monitor interfaces are active. | |
| */ | |
| enum ieee80211_conf_flags { | |
| IEEE80211_CONF_MONITOR = (1<<0), | |
| IEEE80211_CONF_PS = (1<<1), | |
| IEEE80211_CONF_IDLE = (1<<2), | |
| }; | |
| /** | |
| * enum ieee80211_conf_changed - denotes which configuration changed | |
| * | |
| * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed | |
| * @IEEE80211_CONF_CHANGE_MONITOR: the monitor flag changed | |
| * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed | |
| * @IEEE80211_CONF_CHANGE_POWER: the TX power changed | |
| * @IEEE80211_CONF_CHANGE_CHANNEL: the channel/channel_type changed | |
| * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed | |
| * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed | |
| * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed | |
| */ | |
| enum ieee80211_conf_changed { | |
| IEEE80211_CONF_CHANGE_SMPS = BIT(1), | |
| IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), | |
| IEEE80211_CONF_CHANGE_MONITOR = BIT(3), | |
| IEEE80211_CONF_CHANGE_PS = BIT(4), | |
| IEEE80211_CONF_CHANGE_POWER = BIT(5), | |
| IEEE80211_CONF_CHANGE_CHANNEL = BIT(6), | |
| IEEE80211_CONF_CHANGE_RETRY_LIMITS = BIT(7), | |
| IEEE80211_CONF_CHANGE_IDLE = BIT(8), | |
| }; | |
| /** | |
| * enum ieee80211_smps_mode - spatial multiplexing power save mode | |
| * | |
| * @ | |
| */ | |
| enum ieee80211_smps_mode { | |
| IEEE80211_SMPS_AUTOMATIC, | |
| IEEE80211_SMPS_OFF, | |
| IEEE80211_SMPS_STATIC, | |
| IEEE80211_SMPS_DYNAMIC, | |
| /* keep last */ | |
| IEEE80211_SMPS_NUM_MODES, | |
| }; | |
| /** | |
| * struct ieee80211_conf - configuration of the device | |
| * | |
| * This struct indicates how the driver shall configure the hardware. | |
| * | |
| * @flags: configuration flags defined above | |
| * | |
| * @listen_interval: listen interval in units of beacon interval | |
| * @max_sleep_period: the maximum number of beacon intervals to sleep for | |
| * before checking the beacon for a TIM bit (managed mode only); this | |
| * value will be only achievable between DTIM frames, the hardware | |
| * needs to check for the multicast traffic bit in DTIM beacons. | |
| * This variable is valid only when the CONF_PS flag is set. | |
| * @dynamic_ps_timeout: The dynamic powersave timeout (in ms), see the | |
| * powersave documentation below. This variable is valid only when | |
| * the CONF_PS flag is set. | |
| * | |
| * @power_level: requested transmit power (in dBm) | |
| * | |
| * @channel: the channel to tune to | |
| * @channel_type: the channel (HT) type | |
| * | |
| * @long_frame_max_tx_count: Maximum number of transmissions for a "long" frame | |
| * (a frame not RTS protected), called "dot11LongRetryLimit" in 802.11, | |
| * but actually means the number of transmissions not the number of retries | |
| * @short_frame_max_tx_count: Maximum number of transmissions for a "short" | |
| * frame, called "dot11ShortRetryLimit" in 802.11, but actually means the | |
| * number of transmissions not the number of retries | |
| * | |
| * @smps_mode: spatial multiplexing powersave mode; note that | |
| * %IEEE80211_SMPS_STATIC is used when the device is not | |
| * configured for an HT channel | |
| */ | |
| struct ieee80211_conf { | |
| u32 flags; | |
| int power_level, dynamic_ps_timeout; | |
| int max_sleep_period; | |
| u16 listen_interval; | |
| u8 long_frame_max_tx_count, short_frame_max_tx_count; | |
| struct ieee80211_channel *channel; | |
| enum nl80211_channel_type channel_type; | |
| enum ieee80211_smps_mode smps_mode; | |
| }; | |
| /** | |
| * struct ieee80211_vif - per-interface data | |
| * | |
| * Data in this structure is continually present for driver | |
| * use during the life of a virtual interface. | |
| * | |
| * @type: type of this virtual interface | |
| * @bss_conf: BSS configuration for this interface, either our own | |
| * or the BSS we're associated to | |
| * @addr: address of this interface | |
| * @drv_priv: data area for driver use, will always be aligned to | |
| * sizeof(void *). | |
| */ | |
| struct ieee80211_vif { | |
| enum nl80211_iftype type; | |
| struct ieee80211_bss_conf bss_conf; | |
| u8 addr[ETH_ALEN]; | |
| /* must be last */ | |
| u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); | |
| }; | |
| static inline bool ieee80211_vif_is_mesh(struct ieee80211_vif *vif) | |
| { | |
| #ifdef CONFIG_MAC80211_MESH | |
| return vif->type == NL80211_IFTYPE_MESH_POINT; | |
| #endif | |
| return false; | |
| } | |
| /** | |
| * enum ieee80211_key_alg - key algorithm | |
| * @ALG_WEP: WEP40 or WEP104 | |
| * @ALG_TKIP: TKIP | |
| * @ALG_CCMP: CCMP (AES) | |
| * @ALG_AES_CMAC: AES-128-CMAC | |
| */ | |
| enum ieee80211_key_alg { | |
| ALG_WEP, | |
| ALG_TKIP, | |
| ALG_CCMP, | |
| ALG_AES_CMAC, | |
| }; | |
| /** | |
| * enum ieee80211_key_flags - key flags | |
| * | |
| * These flags are used for communication about keys between the driver | |
| * and mac80211, with the @flags parameter of &struct ieee80211_key_conf. | |
| * | |
| * @IEEE80211_KEY_FLAG_WMM_STA: Set by mac80211, this flag indicates | |
| * that the STA this key will be used with could be using QoS. | |
| * @IEEE80211_KEY_FLAG_GENERATE_IV: This flag should be set by the | |
| * driver to indicate that it requires IV generation for this | |
| * particular key. | |
| * @IEEE80211_KEY_FLAG_GENERATE_MMIC: This flag should be set by | |
| * the driver for a TKIP key if it requires Michael MIC | |
| * generation in software. | |
| * @IEEE80211_KEY_FLAG_PAIRWISE: Set by mac80211, this flag indicates | |
| * that the key is pairwise rather then a shared key. | |
| * @IEEE80211_KEY_FLAG_SW_MGMT: This flag should be set by the driver for a | |
| * CCMP key if it requires CCMP encryption of management frames (MFP) to | |
| * be done in software. | |
| */ | |
| enum ieee80211_key_flags { | |
| IEEE80211_KEY_FLAG_WMM_STA = 1<<0, | |
| IEEE80211_KEY_FLAG_GENERATE_IV = 1<<1, | |
| IEEE80211_KEY_FLAG_GENERATE_MMIC= 1<<2, | |
| IEEE80211_KEY_FLAG_PAIRWISE = 1<<3, | |
| IEEE80211_KEY_FLAG_SW_MGMT = 1<<4, | |
| }; | |
| /** | |
| * struct ieee80211_key_conf - key information | |
| * | |
| * This key information is given by mac80211 to the driver by | |
| * the set_key() callback in &struct ieee80211_ops. | |
| * | |
| * @hw_key_idx: To be set by the driver, this is the key index the driver | |
| * wants to be given when a frame is transmitted and needs to be | |
| * encrypted in hardware. | |
| * @alg: The key algorithm. | |
| * @flags: key flags, see &enum ieee80211_key_flags. | |
| * @keyidx: the key index (0-3) | |
| * @keylen: key material length | |
| * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte) | |
| * data block: | |
| * - Temporal Encryption Key (128 bits) | |
| * - Temporal Authenticator Tx MIC Key (64 bits) | |
| * - Temporal Authenticator Rx MIC Key (64 bits) | |
| * @icv_len: The ICV length for this key type | |
| * @iv_len: The IV length for this key type | |
| */ | |
| struct ieee80211_key_conf { | |
| enum ieee80211_key_alg alg; | |
| u8 icv_len; | |
| u8 iv_len; | |
| u8 hw_key_idx; | |
| u8 flags; | |
| s8 keyidx; | |
| u8 keylen; | |
| u8 key[0]; | |
| }; | |
| /** | |
| * enum set_key_cmd - key command | |
| * | |
| * Used with the set_key() callback in &struct ieee80211_ops, this | |
| * indicates whether a key is being removed or added. | |
| * | |
| * @SET_KEY: a key is set | |
| * @DISABLE_KEY: a key must be disabled | |
| */ | |
| enum set_key_cmd { | |
| SET_KEY, DISABLE_KEY, | |
| }; | |
| /** | |
| * struct ieee80211_sta - station table entry | |
| * | |
| * A station table entry represents a station we are possibly | |
| * communicating with. Since stations are RCU-managed in | |
| * mac80211, any ieee80211_sta pointer you get access to must | |
| * either be protected by rcu_read_lock() explicitly or implicitly, | |
| * or you must take good care to not use such a pointer after a | |
| * call to your sta_notify callback that removed it. | |
| * | |
| * @addr: MAC address | |
| * @aid: AID we assigned to the station if we're an AP | |
| * @supp_rates: Bitmap of supported rates (per band) | |
| * @ht_cap: HT capabilities of this STA; restricted to our own TX capabilities | |
| * @drv_priv: data area for driver use, will always be aligned to | |
| * sizeof(void *), size is determined in hw information. | |
| */ | |
| struct ieee80211_sta { | |
| u32 supp_rates[IEEE80211_NUM_BANDS]; | |
| u8 addr[ETH_ALEN]; | |
| u16 aid; | |
| struct ieee80211_sta_ht_cap ht_cap; | |
| /* must be last */ | |
| u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); | |
| }; | |
| /** | |
| * enum sta_notify_cmd - sta notify command | |
| * | |
| * Used with the sta_notify() callback in &struct ieee80211_ops, this | |
| * indicates addition and removal of a station to station table, | |
| * or if a associated station made a power state transition. | |
| * | |
| * @STA_NOTIFY_ADD: a station was added to the station table | |
| * @STA_NOTIFY_REMOVE: a station being removed from the station table | |
| * @STA_NOTIFY_SLEEP: a station is now sleeping | |
| * @STA_NOTIFY_AWAKE: a sleeping station woke up | |
| */ | |
| enum sta_notify_cmd { | |
| STA_NOTIFY_ADD, STA_NOTIFY_REMOVE, | |
| STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE, | |
| }; | |
| /** | |
| * enum ieee80211_tkip_key_type - get tkip key | |
| * | |
| * Used by drivers which need to get a tkip key for skb. Some drivers need a | |
| * phase 1 key, others need a phase 2 key. A single function allows the driver | |
| * to get the key, this enum indicates what type of key is required. | |
| * | |
| * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key | |
| * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key | |
| */ | |
| enum ieee80211_tkip_key_type { | |
| IEEE80211_TKIP_P1_KEY, | |
| IEEE80211_TKIP_P2_KEY, | |
| }; | |
| /** | |
| * enum ieee80211_hw_flags - hardware flags | |
| * | |
| * These flags are used to indicate hardware capabilities to | |
| * the stack. Generally, flags here should have their meaning | |
| * done in a way that the simplest hardware doesn't need setting | |
| * any particular flags. There are some exceptions to this rule, | |
| * however, so you are advised to review these flags carefully. | |
| * | |
| * @IEEE80211_HW_HAS_RATE_CONTROL: | |
| * The hardware or firmware includes rate control, and cannot be | |
| * controlled by the stack. As such, no rate control algorithm | |
| * should be instantiated, and the TX rate reported to userspace | |
| * will be taken from the TX status instead of the rate control | |
| * algorithm. | |
| * Note that this requires that the driver implement a number of | |
| * callbacks so it has the correct information, it needs to have | |
| * the @set_rts_threshold callback and must look at the BSS config | |
| * @use_cts_prot for G/N protection, @use_short_slot for slot | |
| * timing in 2.4 GHz and @use_short_preamble for preambles for | |
| * CCK frames. | |
| * | |
| * @IEEE80211_HW_RX_INCLUDES_FCS: | |
| * Indicates that received frames passed to the stack include | |
| * the FCS at the end. | |
| * | |
| * @IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING: | |
| * Some wireless LAN chipsets buffer broadcast/multicast frames | |
| * for power saving stations in the hardware/firmware and others | |
| * rely on the host system for such buffering. This option is used | |
| * to configure the IEEE 802.11 upper layer to buffer broadcast and | |
| * multicast frames when there are power saving stations so that | |
| * the driver can fetch them with ieee80211_get_buffered_bc(). | |
| * | |
| * @IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE: | |
| * Hardware is not capable of short slot operation on the 2.4 GHz band. | |
| * | |
| * @IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE: | |
| * Hardware is not capable of receiving frames with short preamble on | |
| * the 2.4 GHz band. | |
| * | |
| * @IEEE80211_HW_SIGNAL_UNSPEC: | |
| * Hardware can provide signal values but we don't know its units. We | |
| * expect values between 0 and @max_signal. | |
| * If possible please provide dB or dBm instead. | |
| * | |
| * @IEEE80211_HW_SIGNAL_DBM: | |
| * Hardware gives signal values in dBm, decibel difference from | |
| * one milliwatt. This is the preferred method since it is standardized | |
| * between different devices. @max_signal does not need to be set. | |
| * | |
| * @IEEE80211_HW_NOISE_DBM: | |
| * Hardware can provide noise (radio interference) values in units dBm, | |
| * decibel difference from one milliwatt. | |
| * | |
| * @IEEE80211_HW_SPECTRUM_MGMT: | |
| * Hardware supports spectrum management defined in 802.11h | |
| * Measurement, Channel Switch, Quieting, TPC | |
| * | |
| * @IEEE80211_HW_AMPDU_AGGREGATION: | |
| * Hardware supports 11n A-MPDU aggregation. | |
| * | |
| * @IEEE80211_HW_SUPPORTS_PS: | |
| * Hardware has power save support (i.e. can go to sleep). | |
| * | |
| * @IEEE80211_HW_PS_NULLFUNC_STACK: | |
| * Hardware requires nullfunc frame handling in stack, implies | |
| * stack support for dynamic PS. | |
| * | |
| * @IEEE80211_HW_SUPPORTS_DYNAMIC_PS: | |
| * Hardware has support for dynamic PS. | |
| * | |
| * @IEEE80211_HW_MFP_CAPABLE: | |
| * Hardware supports management frame protection (MFP, IEEE 802.11w). | |
| * | |
| * @IEEE80211_HW_BEACON_FILTER: | |
| * Hardware supports dropping of irrelevant beacon frames to | |
| * avoid waking up cpu. | |
| * | |
| * @IEEE80211_HW_SUPPORTS_STATIC_SMPS: | |
| * Hardware supports static spatial multiplexing powersave, | |
| * ie. can turn off all but one chain even on HT connections | |
| * that should be using more chains. | |
| * | |
| * @IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS: | |
| * Hardware supports dynamic spatial multiplexing powersave, | |
| * ie. can turn off all but one chain and then wake the rest | |
| * up as required after, for example, rts/cts handshake. | |
| */ | |
| enum ieee80211_hw_flags { | |
| IEEE80211_HW_HAS_RATE_CONTROL = 1<<0, | |
| IEEE80211_HW_RX_INCLUDES_FCS = 1<<1, | |
| IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING = 1<<2, | |
| IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE = 1<<3, | |
| IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE = 1<<4, | |
| IEEE80211_HW_SIGNAL_UNSPEC = 1<<5, | |
| IEEE80211_HW_SIGNAL_DBM = 1<<6, | |
| IEEE80211_HW_NOISE_DBM = 1<<7, | |
| IEEE80211_HW_SPECTRUM_MGMT = 1<<8, | |
| IEEE80211_HW_AMPDU_AGGREGATION = 1<<9, | |
| IEEE80211_HW_SUPPORTS_PS = 1<<10, | |
| IEEE80211_HW_PS_NULLFUNC_STACK = 1<<11, | |
| IEEE80211_HW_SUPPORTS_DYNAMIC_PS = 1<<12, | |
| IEEE80211_HW_MFP_CAPABLE = 1<<13, | |
| IEEE80211_HW_BEACON_FILTER = 1<<14, | |
| IEEE80211_HW_SUPPORTS_STATIC_SMPS = 1<<15, | |
| IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS = 1<<16, | |
| }; | |
| /** | |
| * struct ieee80211_hw - hardware information and state | |
| * | |
| * This structure contains the configuration and hardware | |
| * information for an 802.11 PHY. | |
| * | |
| * @wiphy: This points to the &struct wiphy allocated for this | |
| * 802.11 PHY. You must fill in the @perm_addr and @dev | |
| * members of this structure using SET_IEEE80211_DEV() | |
| * and SET_IEEE80211_PERM_ADDR(). Additionally, all supported | |
| * bands (with channels, bitrates) are registered here. | |
| * | |
| * @conf: &struct ieee80211_conf, device configuration, don't use. | |
| * | |
| * @priv: pointer to private area that was allocated for driver use | |
| * along with this structure. | |
| * | |
| * @flags: hardware flags, see &enum ieee80211_hw_flags. | |
| * | |
| * @extra_tx_headroom: headroom to reserve in each transmit skb | |
| * for use by the driver (e.g. for transmit headers.) | |
| * | |
| * @channel_change_time: time (in microseconds) it takes to change channels. | |
| * | |
| * @max_signal: Maximum value for signal (rssi) in RX information, used | |
| * only when @IEEE80211_HW_SIGNAL_UNSPEC or @IEEE80211_HW_SIGNAL_DB | |
| * | |
| * @max_listen_interval: max listen interval in units of beacon interval | |
| * that HW supports | |
| * | |
| * @queues: number of available hardware transmit queues for | |
| * data packets. WMM/QoS requires at least four, these | |
| * queues need to have configurable access parameters. | |
| * | |
| * @rate_control_algorithm: rate control algorithm for this hardware. | |
| * If unset (NULL), the default algorithm will be used. Must be | |
| * set before calling ieee80211_register_hw(). | |
| * | |
| * @vif_data_size: size (in bytes) of the drv_priv data area | |
| * within &struct ieee80211_vif. | |
| * @sta_data_size: size (in bytes) of the drv_priv data area | |
| * within &struct ieee80211_sta. | |
| * | |
| * @max_rates: maximum number of alternate rate retry stages | |
| * @max_rate_tries: maximum number of tries for each stage | |
| */ | |
| struct ieee80211_hw { | |
| struct ieee80211_conf conf; | |
| struct wiphy *wiphy; | |
| const char *rate_control_algorithm; | |
| void *priv; | |
| u32 flags; | |
| unsigned int extra_tx_headroom; | |
| int channel_change_time; | |
| int vif_data_size; | |
| int sta_data_size; | |
| u16 queues; | |
| u16 max_listen_interval; | |
| s8 max_signal; | |
| u8 max_rates; | |
| u8 max_rate_tries; | |
| }; | |
| /** | |
| * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy | |
| * | |
| * @wiphy: the &struct wiphy which we want to query | |
| * | |
| * mac80211 drivers can use this to get to their respective | |
| * &struct ieee80211_hw. Drivers wishing to get to their own private | |
| * structure can then access it via hw->priv. Note that mac802111 drivers should | |
| * not use wiphy_priv() to try to get their private driver structure as this | |
| * is already used internally by mac80211. | |
| */ | |
| struct ieee80211_hw *wiphy_to_ieee80211_hw(struct wiphy *wiphy); | |
| /** | |
| * SET_IEEE80211_DEV - set device for 802.11 hardware | |
| * | |
| * @hw: the &struct ieee80211_hw to set the device for | |
| * @dev: the &struct device of this 802.11 device | |
| */ | |
| static inline void SET_IEEE80211_DEV(struct ieee80211_hw *hw, struct device *dev) | |
| { | |
| set_wiphy_dev(hw->wiphy, dev); | |
| } | |
| /** | |
| * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware | |
| * | |
| * @hw: the &struct ieee80211_hw to set the MAC address for | |
| * @addr: the address to set | |
| */ | |
| static inline void SET_IEEE80211_PERM_ADDR(struct ieee80211_hw *hw, u8 *addr) | |
| { | |
| memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN); | |
| } | |
| static inline struct ieee80211_rate * | |
| ieee80211_get_tx_rate(const struct ieee80211_hw *hw, | |
| const struct ieee80211_tx_info *c) | |
| { | |
| if (WARN_ON(c->control.rates[0].idx < 0)) | |
| return NULL; | |
| return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx]; | |
| } | |
| static inline struct ieee80211_rate * | |
| ieee80211_get_rts_cts_rate(const struct ieee80211_hw *hw, | |
| const struct ieee80211_tx_info *c) | |
| { | |
| if (c->control.rts_cts_rate_idx < 0) | |
| return NULL; | |
| return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx]; | |
| } | |
| static inline struct ieee80211_rate * | |
| ieee80211_get_alt_retry_rate(const struct ieee80211_hw *hw, | |
| const struct ieee80211_tx_info *c, int idx) | |
| { | |
| if (c->control.rates[idx + 1].idx < 0) | |
| return NULL; | |
| return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx]; | |
| } | |
| /** | |
| * DOC: Hardware crypto acceleration | |
| * | |
| * mac80211 is capable of taking advantage of many hardware | |
| * acceleration designs for encryption and decryption operations. | |
| * | |
| * The set_key() callback in the &struct ieee80211_ops for a given | |
| * device is called to enable hardware acceleration of encryption and | |
| * decryption. The callback takes a @sta parameter that will be NULL | |
| * for default keys or keys used for transmission only, or point to | |
| * the station information for the peer for individual keys. | |
| * Multiple transmission keys with the same key index may be used when | |
| * VLANs are configured for an access point. | |
| * | |
| * When transmitting, the TX control data will use the @hw_key_idx | |
| * selected by the driver by modifying the &struct ieee80211_key_conf | |
| * pointed to by the @key parameter to the set_key() function. | |
| * | |
| * The set_key() call for the %SET_KEY command should return 0 if | |
| * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be | |
| * added; if you return 0 then hw_key_idx must be assigned to the | |
| * hardware key index, you are free to use the full u8 range. | |
| * | |
| * When the cmd is %DISABLE_KEY then it must succeed. | |
| * | |
| * Note that it is permissible to not decrypt a frame even if a key | |
| * for it has been uploaded to hardware, the stack will not make any | |
| * decision based on whether a key has been uploaded or not but rather | |
| * based on the receive flags. | |
| * | |
| * The &struct ieee80211_key_conf structure pointed to by the @key | |
| * parameter is guaranteed to be valid until another call to set_key() | |
| * removes it, but it can only be used as a cookie to differentiate | |
| * keys. | |
| * | |
| * In TKIP some HW need to be provided a phase 1 key, for RX decryption | |
| * acceleration (i.e. iwlwifi). Those drivers should provide update_tkip_key | |
| * handler. | |
| * The update_tkip_key() call updates the driver with the new phase 1 key. | |
| * This happens everytime the iv16 wraps around (every 65536 packets). The | |
| * set_key() call will happen only once for each key (unless the AP did | |
| * rekeying), it will not include a valid phase 1 key. The valid phase 1 key is | |
| * provided by update_tkip_key only. The trigger that makes mac80211 call this | |
| * handler is software decryption with wrap around of iv16. | |
| */ | |
| /** | |
| * DOC: Powersave support | |
| * | |
| * mac80211 has support for various powersave implementations. | |
| * | |
| * First, it can support hardware that handles all powersaving by | |
| * itself, such hardware should simply set the %IEEE80211_HW_SUPPORTS_PS | |
| * hardware flag. In that case, it will be told about the desired | |
| * powersave mode depending on the association status, and the driver | |
| * must take care of sending nullfunc frames when necessary, i.e. when | |
| * entering and leaving powersave mode. The driver is required to look at | |
| * the AID in beacons and signal to the AP that it woke up when it finds | |
| * traffic directed to it. This mode supports dynamic PS by simply | |
| * enabling/disabling PS. | |
| * | |
| * Additionally, such hardware may set the %IEEE80211_HW_SUPPORTS_DYNAMIC_PS | |
| * flag to indicate that it can support dynamic PS mode itself (see below). | |
| * | |
| * Other hardware designs cannot send nullfunc frames by themselves and also | |
| * need software support for parsing the TIM bitmap. This is also supported | |
| * by mac80211 by combining the %IEEE80211_HW_SUPPORTS_PS and | |
| * %IEEE80211_HW_PS_NULLFUNC_STACK flags. The hardware is of course still | |
| * required to pass up beacons. The hardware is still required to handle | |
| * waking up for multicast traffic; if it cannot the driver must handle that | |
| * as best as it can, mac80211 is too slow. | |
| * | |
| * Dynamic powersave mode is an extension to normal powersave mode in which | |
| * the hardware stays awake for a user-specified period of time after sending | |
| * a frame so that reply frames need not be buffered and therefore delayed | |
| * to the next wakeup. This can either be supported by hardware, in which case | |
| * the driver needs to look at the @dynamic_ps_timeout hardware configuration | |
| * value, or by the stack if all nullfunc handling is in the stack. | |
| */ | |
| /** | |
| * DOC: Beacon filter support | |
| * | |
| * Some hardware have beacon filter support to reduce host cpu wakeups | |
| * which will reduce system power consumption. It usuallly works so that | |
| * the firmware creates a checksum of the beacon but omits all constantly | |
| * changing elements (TSF, TIM etc). Whenever the checksum changes the | |
| * beacon is forwarded to the host, otherwise it will be just dropped. That | |
| * way the host will only receive beacons where some relevant information | |
| * (for example ERP protection or WMM settings) have changed. | |
| * | |
| * Beacon filter support is advertised with the %IEEE80211_HW_BEACON_FILTER | |
| * hardware capability. The driver needs to enable beacon filter support | |
| * whenever power save is enabled, that is %IEEE80211_CONF_PS is set. When | |
| * power save is enabled, the stack will not check for beacon loss and the | |
| * driver needs to notify about loss of beacons with ieee80211_beacon_loss(). | |
| * | |
| * The time (or number of beacons missed) until the firmware notifies the | |
| * driver of a beacon loss event (which in turn causes the driver to call | |
| * ieee80211_beacon_loss()) should be configurable and will be controlled | |
| * by mac80211 and the roaming algorithm in the future. | |
| * | |
| * Since there may be constantly changing information elements that nothing | |
| * in the software stack cares about, we will, in the future, have mac80211 | |
| * tell the driver which information elements are interesting in the sense | |
| * that we want to see changes in them. This will include | |
| * - a list of information element IDs | |
| * - a list of OUIs for the vendor information element | |
| * | |
| * Ideally, the hardware would filter out any beacons without changes in the | |
| * requested elements, but if it cannot support that it may, at the expense | |
| * of some efficiency, filter out only a subset. For example, if the device | |
| * doesn't support checking for OUIs it should pass up all changes in all | |
| * vendor information elements. | |
| * | |
| * Note that change, for the sake of simplification, also includes information | |
| * elements appearing or disappearing from the beacon. | |
| * | |
| * Some hardware supports an "ignore list" instead, just make sure nothing | |
| * that was requested is on the ignore list, and include commonly changing | |
| * information element IDs in the ignore list, for example 11 (BSS load) and | |
| * the various vendor-assigned IEs with unknown contents (128, 129, 133-136, | |
| * 149, 150, 155, 156, 173, 176, 178, 179, 219); for forward compatibility | |
| * it could also include some currently unused IDs. | |
| * | |
| * | |
| * In addition to these capabilities, hardware should support notifying the | |
| * host of changes in the beacon RSSI. This is relevant to implement roaming | |
| * when no traffic is flowing (when traffic is flowing we see the RSSI of | |
| * the received data packets). This can consist in notifying the host when | |
| * the RSSI changes significantly or when it drops below or rises above | |
| * configurable thresholds. In the future these thresholds will also be | |
| * configured by mac80211 (which gets them from userspace) to implement | |
| * them as the roaming algorithm requires. | |
| * | |
| * If the hardware cannot implement this, the driver should ask it to | |
| * periodically pass beacon frames to the host so that software can do the | |
| * signal strength threshold checking. | |
| */ | |
| /** | |
| * DOC: Spatial multiplexing power save | |
| * | |
| * SMPS (Spatial multiplexing power save) is a mechanism to conserve | |
| * power in an 802.11n implementation. For details on the mechanism | |
| * and rationale, please refer to 802.11 (as amended by 802.11n-2009) | |
| * "11.2.3 SM power save". | |
| * | |
| * The mac80211 implementation is capable of sending action frames | |
| * to update the AP about the station's SMPS mode, and will instruct | |
| * the driver to enter the specific mode. It will also announce the | |
| * requested SMPS mode during the association handshake. Hardware | |
| * support for this feature is required, and can be indicated by | |
| * hardware flags. | |
| * | |
| * The default mode will be "automatic", which nl80211/cfg80211 | |
| * defines to be dynamic SMPS in (regular) powersave, and SMPS | |
| * turned off otherwise. | |
| * | |
| * To support this feature, the driver must set the appropriate | |
| * hardware support flags, and handle the SMPS flag to the config() | |
| * operation. It will then with this mechanism be instructed to | |
| * enter the requested SMPS mode while associated to an HT AP. | |
| */ | |
| /** | |
| * DOC: Frame filtering | |
| * | |
| * mac80211 requires to see many management frames for proper | |
| * operation, and users may want to see many more frames when | |
| * in monitor mode. However, for best CPU usage and power consumption, | |
| * having as few frames as possible percolate through the stack is | |
| * desirable. Hence, the hardware should filter as much as possible. | |
| * | |
| * To achieve this, mac80211 uses filter flags (see below) to tell | |
| * the driver's configure_filter() function which frames should be | |
| * passed to mac80211 and which should be filtered out. | |
| * | |
| * Before configure_filter() is invoked, the prepare_multicast() | |
| * callback is invoked with the parameters @mc_count and @mc_list | |
| * for the combined multicast address list of all virtual interfaces. | |
| * It's use is optional, and it returns a u64 that is passed to | |
| * configure_filter(). Additionally, configure_filter() has the | |
| * arguments @changed_flags telling which flags were changed and | |
| * @total_flags with the new flag states. | |
| * | |
| * If your device has no multicast address filters your driver will | |
| * need to check both the %FIF_ALLMULTI flag and the @mc_count | |
| * parameter to see whether multicast frames should be accepted | |
| * or dropped. | |
| * | |
| * All unsupported flags in @total_flags must be cleared. | |
| * Hardware does not support a flag if it is incapable of _passing_ | |
| * the frame to the stack. Otherwise the driver must ignore | |
| * the flag, but not clear it. | |
| * You must _only_ clear the flag (announce no support for the | |
| * flag to mac80211) if you are not able to pass the packet type | |
| * to the stack (so the hardware always filters it). | |
| * So for example, you should clear @FIF_CONTROL, if your hardware | |
| * always filters control frames. If your hardware always passes | |
| * control frames to the kernel and is incapable of filtering them, | |
| * you do _not_ clear the @FIF_CONTROL flag. | |
| * This rule applies to all other FIF flags as well. | |
| */ | |
| /** | |
| * enum ieee80211_filter_flags - hardware filter flags | |
| * | |
| * These flags determine what the filter in hardware should be | |
| * programmed to let through and what should not be passed to the | |
| * stack. It is always safe to pass more frames than requested, | |
| * but this has negative impact on power consumption. | |
| * | |
| * @FIF_PROMISC_IN_BSS: promiscuous mode within your BSS, | |
| * think of the BSS as your network segment and then this corresponds | |
| * to the regular ethernet device promiscuous mode. | |
| * | |
| * @FIF_ALLMULTI: pass all multicast frames, this is used if requested | |
| * by the user or if the hardware is not capable of filtering by | |
| * multicast address. | |
| * | |
| * @FIF_FCSFAIL: pass frames with failed FCS (but you need to set the | |
| * %RX_FLAG_FAILED_FCS_CRC for them) | |
| * | |
| * @FIF_PLCPFAIL: pass frames with failed PLCP CRC (but you need to set | |
| * the %RX_FLAG_FAILED_PLCP_CRC for them | |
| * | |
| * @FIF_BCN_PRBRESP_PROMISC: This flag is set during scanning to indicate | |
| * to the hardware that it should not filter beacons or probe responses | |
| * by BSSID. Filtering them can greatly reduce the amount of processing | |
| * mac80211 needs to do and the amount of CPU wakeups, so you should | |
| * honour this flag if possible. | |
| * | |
| * @FIF_CONTROL: pass control frames (except for PS Poll), if PROMISC_IN_BSS | |
| * is not set then only those addressed to this station. | |
| * | |
| * @FIF_OTHER_BSS: pass frames destined to other BSSes | |
| * | |
| * @FIF_PSPOLL: pass PS Poll frames, if PROMISC_IN_BSS is not set then only | |
| * those addressed to this station. | |
| */ | |
| enum ieee80211_filter_flags { | |
| FIF_PROMISC_IN_BSS = 1<<0, | |
| FIF_ALLMULTI = 1<<1, | |
| FIF_FCSFAIL = 1<<2, | |
| FIF_PLCPFAIL = 1<<3, | |
| FIF_BCN_PRBRESP_PROMISC = 1<<4, | |
| FIF_CONTROL = 1<<5, | |
| FIF_OTHER_BSS = 1<<6, | |
| FIF_PSPOLL = 1<<7, | |
| }; | |
| /** | |
| * enum ieee80211_ampdu_mlme_action - A-MPDU actions | |
| * | |
| * These flags are used with the ampdu_action() callback in | |
| * &struct ieee80211_ops to indicate which action is needed. | |
| * | |
| * Note that drivers MUST be able to deal with a TX aggregation | |
| * session being stopped even before they OK'ed starting it by | |
| * calling ieee80211_start_tx_ba_cb(_irqsafe), because the peer | |
| * might receive the addBA frame and send a delBA right away! | |
| * | |
| * @IEEE80211_AMPDU_RX_START: start Rx aggregation | |
| * @IEEE80211_AMPDU_RX_STOP: stop Rx aggregation | |
| * @IEEE80211_AMPDU_TX_START: start Tx aggregation | |
| * @IEEE80211_AMPDU_TX_STOP: stop Tx aggregation | |
| * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational | |
| */ | |
| enum ieee80211_ampdu_mlme_action { | |
| IEEE80211_AMPDU_RX_START, | |
| IEEE80211_AMPDU_RX_STOP, | |
| IEEE80211_AMPDU_TX_START, | |
| IEEE80211_AMPDU_TX_STOP, | |
| IEEE80211_AMPDU_TX_OPERATIONAL, | |
| }; | |
| /** | |
| * struct ieee80211_ops - callbacks from mac80211 to the driver | |
| * | |
| * This structure contains various callbacks that the driver may | |
| * handle or, in some cases, must handle, for example to configure | |
| * the hardware to a new channel or to transmit a frame. | |
| * | |
| * @tx: Handler that 802.11 module calls for each transmitted frame. | |
| * skb contains the buffer starting from the IEEE 802.11 header. | |
| * The low-level driver should send the frame out based on | |
| * configuration in the TX control data. This handler should, | |
| * preferably, never fail and stop queues appropriately, more | |
| * importantly, however, it must never fail for A-MPDU-queues. | |
| * This function should return NETDEV_TX_OK except in very | |
| * limited cases. | |
| * Must be implemented and atomic. | |
| * | |
| * @start: Called before the first netdevice attached to the hardware | |
| * is enabled. This should turn on the hardware and must turn on | |
| * frame reception (for possibly enabled monitor interfaces.) | |
| * Returns negative error codes, these may be seen in userspace, | |
| * or zero. | |
| * When the device is started it should not have a MAC address | |
| * to avoid acknowledging frames before a non-monitor device | |
| * is added. | |
| * Must be implemented and can sleep. | |
| * | |
| * @stop: Called after last netdevice attached to the hardware | |
| * is disabled. This should turn off the hardware (at least | |
| * it must turn off frame reception.) | |
| * May be called right after add_interface if that rejects | |
| * an interface. If you added any work onto the mac80211 workqueue | |
| * you should ensure to cancel it on this callback. | |
| * Must be implemented and can sleep. | |
| * | |
| * @add_interface: Called when a netdevice attached to the hardware is | |
| * enabled. Because it is not called for monitor mode devices, @start | |
| * and @stop must be implemented. | |
| * The driver should perform any initialization it needs before | |
| * the device can be enabled. The initial configuration for the | |
| * interface is given in the conf parameter. | |
| * The callback may refuse to add an interface by returning a | |
| * negative error code (which will be seen in userspace.) | |
| * Must be implemented and can sleep. | |
| * | |
| * @remove_interface: Notifies a driver that an interface is going down. | |
| * The @stop callback is called after this if it is the last interface | |
| * and no monitor interfaces are present. | |
| * When all interfaces are removed, the MAC address in the hardware | |
| * must be cleared so the device no longer acknowledges packets, | |
| * the mac_addr member of the conf structure is, however, set to the | |
| * MAC address of the device going away. | |
| * Hence, this callback must be implemented. It can sleep. | |
| * | |
| * @config: Handler for configuration requests. IEEE 802.11 code calls this | |
| * function to change hardware configuration, e.g., channel. | |
| * This function should never fail but returns a negative error code | |
| * if it does. The callback can sleep. | |
| * | |
| * @bss_info_changed: Handler for configuration requests related to BSS | |
| * parameters that may vary during BSS's lifespan, and may affect low | |
| * level driver (e.g. assoc/disassoc status, erp parameters). | |
| * This function should not be used if no BSS has been set, unless | |
| * for association indication. The @changed parameter indicates which | |
| * of the bss parameters has changed when a call is made. The callback | |
| * can sleep. | |
| * | |
| * @prepare_multicast: Prepare for multicast filter configuration. | |
| * This callback is optional, and its return value is passed | |
| * to configure_filter(). This callback must be atomic. | |
| * | |
| * @configure_filter: Configure the device's RX filter. | |
| * See the section "Frame filtering" for more information. | |
| * This callback must be implemented and can sleep. | |
| * | |
| * @set_tim: Set TIM bit. mac80211 calls this function when a TIM bit | |
| * must be set or cleared for a given STA. Must be atomic. | |
| * | |
| * @set_key: See the section "Hardware crypto acceleration" | |
| * This callback is only called between add_interface and | |
| * remove_interface calls, i.e. while the given virtual interface | |
| * is enabled. | |
| * Returns a negative error code if the key can't be added. | |
| * The callback can sleep. | |
| * | |
| * @update_tkip_key: See the section "Hardware crypto acceleration" | |
| * This callback will be called in the context of Rx. Called for drivers | |
| * which set IEEE80211_KEY_FLAG_TKIP_REQ_RX_P1_KEY. | |
| * The callback can sleep. | |
| * | |
| * @hw_scan: Ask the hardware to service the scan request, no need to start | |
| * the scan state machine in stack. The scan must honour the channel | |
| * configuration done by the regulatory agent in the wiphy's | |
| * registered bands. The hardware (or the driver) needs to make sure | |
| * that power save is disabled. | |
| * The @req ie/ie_len members are rewritten by mac80211 to contain the | |
| * entire IEs after the SSID, so that drivers need not look at these | |
| * at all but just send them after the SSID -- mac80211 includes the | |
| * (extended) supported rates and HT information (where applicable). | |
| * When the scan finishes, ieee80211_scan_completed() must be called; | |
| * note that it also must be called when the scan cannot finish due to | |
| * any error unless this callback returned a negative error code. | |
| * The callback can sleep. | |
| * | |
| * @sw_scan_start: Notifier function that is called just before a software scan | |
| * is started. Can be NULL, if the driver doesn't need this notification. | |
| * The callback can sleep. | |
| * | |
| * @sw_scan_complete: Notifier function that is called just after a | |
| * software scan finished. Can be NULL, if the driver doesn't need | |
| * this notification. | |
| * The callback can sleep. | |
| * | |
| * @get_stats: Return low-level statistics. | |
| * Returns zero if statistics are available. | |
| * The callback can sleep. | |
| * | |
| * @get_tkip_seq: If your device implements TKIP encryption in hardware this | |
| * callback should be provided to read the TKIP transmit IVs (both IV32 | |
| * and IV16) for the given key from hardware. | |
| * The callback must be atomic. | |
| * | |
| * @set_rts_threshold: Configuration of RTS threshold (if device needs it) | |
| * The callback can sleep. | |
| * | |
| * @sta_notify: Notifies low level driver about addition, removal or power | |
| * state transition of an associated station, AP, IBSS/WDS/mesh peer etc. | |
| * Must be atomic. | |
| * | |
| * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max), | |
| * bursting) for a hardware TX queue. | |
| * Returns a negative error code on failure. | |
| * The callback can sleep. | |
| * | |
| * @get_tx_stats: Get statistics of the current TX queue status. This is used | |
| * to get number of currently queued packets (queue length), maximum queue | |
| * size (limit), and total number of packets sent using each TX queue | |
| * (count). The 'stats' pointer points to an array that has hw->queues | |
| * items. | |
| * The callback must be atomic. | |
| * | |
| * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, | |
| * this is only used for IBSS mode BSSID merging and debugging. Is not a | |
| * required function. | |
| * The callback can sleep. | |
| * | |
| * @set_tsf: Set the TSF timer to the specified value in the firmware/hardware. | |
| * Currently, this is only used for IBSS mode debugging. Is not a | |
| * required function. | |
| * The callback can sleep. | |
| * | |
| * @reset_tsf: Reset the TSF timer and allow firmware/hardware to synchronize | |
| * with other STAs in the IBSS. This is only used in IBSS mode. This | |
| * function is optional if the firmware/hardware takes full care of | |
| * TSF synchronization. | |
| * The callback can sleep. | |
| * | |
| * @tx_last_beacon: Determine whether the last IBSS beacon was sent by us. | |
| * This is needed only for IBSS mode and the result of this function is | |
| * used to determine whether to reply to Probe Requests. | |
| * Returns non-zero if this device sent the last beacon. | |
| * The callback can sleep. | |
| * | |
| * @ampdu_action: Perform a certain A-MPDU action | |
| * The RA/TID combination determines the destination and TID we want | |
| * the ampdu action to be performed for. The action is defined through | |
| * ieee80211_ampdu_mlme_action. Starting sequence number (@ssn) | |
| * is the first frame we expect to perform the action on. Notice | |
| * that TX/RX_STOP can pass NULL for this parameter. | |
| * Returns a negative error code on failure. | |
| * The callback must be atomic. | |
| * | |
| * @rfkill_poll: Poll rfkill hardware state. If you need this, you also | |
| * need to set wiphy->rfkill_poll to %true before registration, | |
| * and need to call wiphy_rfkill_set_hw_state() in the callback. | |
| * The callback can sleep. | |
| * | |
| * @testmode_cmd: Implement a cfg80211 test mode command. | |
| * The callback can sleep. | |
| * | |
| * @flush: Flush all pending frames from the hardware queue, making sure | |
| * that the hardware queues are empty. If the parameter @drop is set | |
| * to %true, pending frames may be dropped. The callback can sleep. | |
| */ | |
| struct ieee80211_ops { | |
| int (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); | |
| int (*start)(struct ieee80211_hw *hw); | |
| void (*stop)(struct ieee80211_hw *hw); | |
| int (*add_interface)(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif); | |
| void (*remove_interface)(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif); | |
| int (*config)(struct ieee80211_hw *hw, u32 changed); | |
| void (*bss_info_changed)(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif, | |
| struct ieee80211_bss_conf *info, | |
| u32 changed); | |
| u64 (*prepare_multicast)(struct ieee80211_hw *hw, | |
| int mc_count, struct dev_addr_list *mc_list); | |
| void (*configure_filter)(struct ieee80211_hw *hw, | |
| unsigned int changed_flags, | |
| unsigned int *total_flags, | |
| u64 multicast); | |
| int (*set_tim)(struct ieee80211_hw *hw, struct ieee80211_sta *sta, | |
| bool set); | |
| int (*set_key)(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
| struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
| struct ieee80211_key_conf *key); | |
| void (*update_tkip_key)(struct ieee80211_hw *hw, | |
| struct ieee80211_key_conf *conf, const u8 *address, | |
| u32 iv32, u16 *phase1key); | |
| int (*hw_scan)(struct ieee80211_hw *hw, | |
| struct cfg80211_scan_request *req); | |
| void (*sw_scan_start)(struct ieee80211_hw *hw); | |
| void (*sw_scan_complete)(struct ieee80211_hw *hw); | |
| int (*get_stats)(struct ieee80211_hw *hw, | |
| struct ieee80211_low_level_stats *stats); | |
| void (*get_tkip_seq)(struct ieee80211_hw *hw, u8 hw_key_idx, | |
| u32 *iv32, u16 *iv16); | |
| int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value); | |
| void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
| enum sta_notify_cmd, struct ieee80211_sta *sta); | |
| int (*conf_tx)(struct ieee80211_hw *hw, u16 queue, | |
| const struct ieee80211_tx_queue_params *params); | |
| int (*get_tx_stats)(struct ieee80211_hw *hw, | |
| struct ieee80211_tx_queue_stats *stats); | |
| u64 (*get_tsf)(struct ieee80211_hw *hw); | |
| void (*set_tsf)(struct ieee80211_hw *hw, u64 tsf); | |
| void (*reset_tsf)(struct ieee80211_hw *hw); | |
| int (*tx_last_beacon)(struct ieee80211_hw *hw); | |
| int (*ampdu_action)(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif, | |
| enum ieee80211_ampdu_mlme_action action, | |
| struct ieee80211_sta *sta, u16 tid, u16 *ssn); | |
| void (*rfkill_poll)(struct ieee80211_hw *hw); | |
| #ifdef CONFIG_NL80211_TESTMODE | |
| int (*testmode_cmd)(struct ieee80211_hw *hw, void *data, int len); | |
| #endif | |
| void (*flush)(struct ieee80211_hw *hw, bool drop); | |
| }; | |
| /** | |
| * ieee80211_alloc_hw - Allocate a new hardware device | |
| * | |
| * This must be called once for each hardware device. The returned pointer | |
| * must be used to refer to this device when calling other functions. | |
| * mac80211 allocates a private data area for the driver pointed to by | |
| * @priv in &struct ieee80211_hw, the size of this area is given as | |
| * @priv_data_len. | |
| * | |
| * @priv_data_len: length of private data | |
| * @ops: callbacks for this device | |
| */ | |
| struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, | |
| const struct ieee80211_ops *ops); | |
| /** | |
| * ieee80211_register_hw - Register hardware device | |
| * | |
| * You must call this function before any other functions in | |
| * mac80211. Note that before a hardware can be registered, you | |
| * need to fill the contained wiphy's information. | |
| * | |
| * @hw: the device to register as returned by ieee80211_alloc_hw() | |
| */ | |
| int ieee80211_register_hw(struct ieee80211_hw *hw); | |
| #ifdef CONFIG_MAC80211_LEDS | |
| extern char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw); | |
| extern char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw); | |
| extern char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw); | |
| extern char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw); | |
| #endif | |
| /** | |
| * ieee80211_get_tx_led_name - get name of TX LED | |
| * | |
| * mac80211 creates a transmit LED trigger for each wireless hardware | |
| * that can be used to drive LEDs if your driver registers a LED device. | |
| * This function returns the name (or %NULL if not configured for LEDs) | |
| * of the trigger so you can automatically link the LED device. | |
| * | |
| * @hw: the hardware to get the LED trigger name for | |
| */ | |
| static inline char *ieee80211_get_tx_led_name(struct ieee80211_hw *hw) | |
| { | |
| #ifdef CONFIG_MAC80211_LEDS | |
| return __ieee80211_get_tx_led_name(hw); | |
| #else | |
| return NULL; | |
| #endif | |
| } | |
| /** | |
| * ieee80211_get_rx_led_name - get name of RX LED | |
| * | |
| * mac80211 creates a receive LED trigger for each wireless hardware | |
| * that can be used to drive LEDs if your driver registers a LED device. | |
| * This function returns the name (or %NULL if not configured for LEDs) | |
| * of the trigger so you can automatically link the LED device. | |
| * | |
| * @hw: the hardware to get the LED trigger name for | |
| */ | |
| static inline char *ieee80211_get_rx_led_name(struct ieee80211_hw *hw) | |
| { | |
| #ifdef CONFIG_MAC80211_LEDS | |
| return __ieee80211_get_rx_led_name(hw); | |
| #else | |
| return NULL; | |
| #endif | |
| } | |
| /** | |
| * ieee80211_get_assoc_led_name - get name of association LED | |
| * | |
| * mac80211 creates a association LED trigger for each wireless hardware | |
| * that can be used to drive LEDs if your driver registers a LED device. | |
| * This function returns the name (or %NULL if not configured for LEDs) | |
| * of the trigger so you can automatically link the LED device. | |
| * | |
| * @hw: the hardware to get the LED trigger name for | |
| */ | |
| static inline char *ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) | |
| { | |
| #ifdef CONFIG_MAC80211_LEDS | |
| return __ieee80211_get_assoc_led_name(hw); | |
| #else | |
| return NULL; | |
| #endif | |
| } | |
| /** | |
| * ieee80211_get_radio_led_name - get name of radio LED | |
| * | |
| * mac80211 creates a radio change LED trigger for each wireless hardware | |
| * that can be used to drive LEDs if your driver registers a LED device. | |
| * This function returns the name (or %NULL if not configured for LEDs) | |
| * of the trigger so you can automatically link the LED device. | |
| * | |
| * @hw: the hardware to get the LED trigger name for | |
| */ | |
| static inline char *ieee80211_get_radio_led_name(struct ieee80211_hw *hw) | |
| { | |
| #ifdef CONFIG_MAC80211_LEDS | |
| return __ieee80211_get_radio_led_name(hw); | |
| #else | |
| return NULL; | |
| #endif | |
| } | |
| /** | |
| * ieee80211_unregister_hw - Unregister a hardware device | |
| * | |
| * This function instructs mac80211 to free allocated resources | |
| * and unregister netdevices from the networking subsystem. | |
| * | |
| * @hw: the hardware to unregister | |
| */ | |
| void ieee80211_unregister_hw(struct ieee80211_hw *hw); | |
| /** | |
| * ieee80211_free_hw - free hardware descriptor | |
| * | |
| * This function frees everything that was allocated, including the | |
| * private data for the driver. You must call ieee80211_unregister_hw() | |
| * before calling this function. | |
| * | |
| * @hw: the hardware to free | |
| */ | |
| void ieee80211_free_hw(struct ieee80211_hw *hw); | |
| /** | |
| * ieee80211_restart_hw - restart hardware completely | |
| * | |
| * Call this function when the hardware was restarted for some reason | |
| * (hardware error, ...) and the driver is unable to restore its state | |
| * by itself. mac80211 assumes that at this point the driver/hardware | |
| * is completely uninitialised and stopped, it starts the process by | |
| * calling the ->start() operation. The driver will need to reset all | |
| * internal state that it has prior to calling this function. | |
| * | |
| * @hw: the hardware to restart | |
| */ | |
| void ieee80211_restart_hw(struct ieee80211_hw *hw); | |
| /** | |
| * ieee80211_rx - receive frame | |
| * | |
| * Use this function to hand received frames to mac80211. The receive | |
| * buffer in @skb must start with an IEEE 802.11 header. | |
| * | |
| * This function may not be called in IRQ context. Calls to this function | |
| * for a single hardware must be synchronized against each other. Calls to | |
| * this function, ieee80211_rx_ni() and ieee80211_rx_irqsafe() may not be | |
| * mixed for a single hardware. | |
| * | |
| * In process context use instead ieee80211_rx_ni(). | |
| * | |
| * @hw: the hardware this frame came in on | |
| * @skb: the buffer to receive, owned by mac80211 after this call | |
| */ | |
| void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb); | |
| /** | |
| * ieee80211_rx_irqsafe - receive frame | |
| * | |
| * Like ieee80211_rx() but can be called in IRQ context | |
| * (internally defers to a tasklet.) | |
| * | |
| * Calls to this function, ieee80211_rx() or ieee80211_rx_ni() may not | |
| * be mixed for a single hardware. | |
| * | |
| * @hw: the hardware this frame came in on | |
| * @skb: the buffer to receive, owned by mac80211 after this call | |
| */ | |
| void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb); | |
| /** | |
| * ieee80211_rx_ni - receive frame (in process context) | |
| * | |
| * Like ieee80211_rx() but can be called in process context | |
| * (internally disables bottom halves). | |
| * | |
| * Calls to this function, ieee80211_rx() and ieee80211_rx_irqsafe() may | |
| * not be mixed for a single hardware. | |
| * | |
| * @hw: the hardware this frame came in on | |
| * @skb: the buffer to receive, owned by mac80211 after this call | |
| */ | |
| static inline void ieee80211_rx_ni(struct ieee80211_hw *hw, | |
| struct sk_buff *skb) | |
| { | |
| local_bh_disable(); | |
| ieee80211_rx(hw, skb); | |
| local_bh_enable(); | |
| } | |
| /* | |
| * The TX headroom reserved by mac80211 for its own tx_status functions. | |
| * This is enough for the radiotap header. | |
| */ | |
| #define IEEE80211_TX_STATUS_HEADROOM 13 | |
| /** | |
| * ieee80211_tx_status - transmit status callback | |
| * | |
| * Call this function for all transmitted frames after they have been | |
| * transmitted. It is permissible to not call this function for | |
| * multicast frames but this can affect statistics. | |
| * | |
| * This function may not be called in IRQ context. Calls to this function | |
| * for a single hardware must be synchronized against each other. Calls | |
| * to this function and ieee80211_tx_status_irqsafe() may not be mixed | |
| * for a single hardware. | |
| * | |
| * @hw: the hardware the frame was transmitted by | |
| * @skb: the frame that was transmitted, owned by mac80211 after this call | |
| */ | |
| void ieee80211_tx_status(struct ieee80211_hw *hw, | |
| struct sk_buff *skb); | |
| /** | |
| * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback | |
| * | |
| * Like ieee80211_tx_status() but can be called in IRQ context | |
| * (internally defers to a tasklet.) | |
| * | |
| * Calls to this function and ieee80211_tx_status() may not be mixed for a | |
| * single hardware. | |
| * | |
| * @hw: the hardware the frame was transmitted by | |
| * @skb: the frame that was transmitted, owned by mac80211 after this call | |
| */ | |
| void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, | |
| struct sk_buff *skb); | |
| /** | |
| * ieee80211_beacon_get_tim - beacon generation function | |
| * @hw: pointer obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * @tim_offset: pointer to variable that will receive the TIM IE offset. | |
| * Set to 0 if invalid (in non-AP modes). | |
| * @tim_length: pointer to variable that will receive the TIM IE length, | |
| * (including the ID and length bytes!). | |
| * Set to 0 if invalid (in non-AP modes). | |
| * | |
| * If the driver implements beaconing modes, it must use this function to | |
| * obtain the beacon frame/template. | |
| * | |
| * If the beacon frames are generated by the host system (i.e., not in | |
| * hardware/firmware), the driver uses this function to get each beacon | |
| * frame from mac80211 -- it is responsible for calling this function | |
| * before the beacon is needed (e.g. based on hardware interrupt). | |
| * | |
| * If the beacon frames are generated by the device, then the driver | |
| * must use the returned beacon as the template and change the TIM IE | |
| * according to the current DTIM parameters/TIM bitmap. | |
| * | |
| * The driver is responsible for freeing the returned skb. | |
| */ | |
| struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif, | |
| u16 *tim_offset, u16 *tim_length); | |
| /** | |
| * ieee80211_beacon_get - beacon generation function | |
| * @hw: pointer obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * | |
| * See ieee80211_beacon_get_tim(). | |
| */ | |
| static inline struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif) | |
| { | |
| return ieee80211_beacon_get_tim(hw, vif, NULL, NULL); | |
| } | |
| /** | |
| * ieee80211_rts_get - RTS frame generation function | |
| * @hw: pointer obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * @frame: pointer to the frame that is going to be protected by the RTS. | |
| * @frame_len: the frame length (in octets). | |
| * @frame_txctl: &struct ieee80211_tx_info of the frame. | |
| * @rts: The buffer where to store the RTS frame. | |
| * | |
| * If the RTS frames are generated by the host system (i.e., not in | |
| * hardware/firmware), the low-level driver uses this function to receive | |
| * the next RTS frame from the 802.11 code. The low-level is responsible | |
| * for calling this function before and RTS frame is needed. | |
| */ | |
| void ieee80211_rts_get(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
| const void *frame, size_t frame_len, | |
| const struct ieee80211_tx_info *frame_txctl, | |
| struct ieee80211_rts *rts); | |
| /** | |
| * ieee80211_rts_duration - Get the duration field for an RTS frame | |
| * @hw: pointer obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * @frame_len: the length of the frame that is going to be protected by the RTS. | |
| * @frame_txctl: &struct ieee80211_tx_info of the frame. | |
| * | |
| * If the RTS is generated in firmware, but the host system must provide | |
| * the duration field, the low-level driver uses this function to receive | |
| * the duration field value in little-endian byteorder. | |
| */ | |
| __le16 ieee80211_rts_duration(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif, size_t frame_len, | |
| const struct ieee80211_tx_info *frame_txctl); | |
| /** | |
| * ieee80211_ctstoself_get - CTS-to-self frame generation function | |
| * @hw: pointer obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * @frame: pointer to the frame that is going to be protected by the CTS-to-self. | |
| * @frame_len: the frame length (in octets). | |
| * @frame_txctl: &struct ieee80211_tx_info of the frame. | |
| * @cts: The buffer where to store the CTS-to-self frame. | |
| * | |
| * If the CTS-to-self frames are generated by the host system (i.e., not in | |
| * hardware/firmware), the low-level driver uses this function to receive | |
| * the next CTS-to-self frame from the 802.11 code. The low-level is responsible | |
| * for calling this function before and CTS-to-self frame is needed. | |
| */ | |
| void ieee80211_ctstoself_get(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif, | |
| const void *frame, size_t frame_len, | |
| const struct ieee80211_tx_info *frame_txctl, | |
| struct ieee80211_cts *cts); | |
| /** | |
| * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame | |
| * @hw: pointer obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * @frame_len: the length of the frame that is going to be protected by the CTS-to-self. | |
| * @frame_txctl: &struct ieee80211_tx_info of the frame. | |
| * | |
| * If the CTS-to-self is generated in firmware, but the host system must provide | |
| * the duration field, the low-level driver uses this function to receive | |
| * the duration field value in little-endian byteorder. | |
| */ | |
| __le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif, | |
| size_t frame_len, | |
| const struct ieee80211_tx_info *frame_txctl); | |
| /** | |
| * ieee80211_generic_frame_duration - Calculate the duration field for a frame | |
| * @hw: pointer obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * @frame_len: the length of the frame. | |
| * @rate: the rate at which the frame is going to be transmitted. | |
| * | |
| * Calculate the duration field of some generic frame, given its | |
| * length and transmission rate (in 100kbps). | |
| */ | |
| __le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw, | |
| struct ieee80211_vif *vif, | |
| size_t frame_len, | |
| struct ieee80211_rate *rate); | |
| /** | |
| * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames | |
| * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * | |
| * Function for accessing buffered broadcast and multicast frames. If | |
| * hardware/firmware does not implement buffering of broadcast/multicast | |
| * frames when power saving is used, 802.11 code buffers them in the host | |
| * memory. The low-level driver uses this function to fetch next buffered | |
| * frame. In most cases, this is used when generating beacon frame. This | |
| * function returns a pointer to the next buffered skb or NULL if no more | |
| * buffered frames are available. | |
| * | |
| * Note: buffered frames are returned only after DTIM beacon frame was | |
| * generated with ieee80211_beacon_get() and the low-level driver must thus | |
| * call ieee80211_beacon_get() first. ieee80211_get_buffered_bc() returns | |
| * NULL if the previous generated beacon was not DTIM, so the low-level driver | |
| * does not need to check for DTIM beacons separately and should be able to | |
| * use common code for all beacons. | |
| */ | |
| struct sk_buff * | |
| ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); | |
| /** | |
| * ieee80211_get_tkip_key - get a TKIP rc4 for skb | |
| * | |
| * This function computes a TKIP rc4 key for an skb. It computes | |
| * a phase 1 key if needed (iv16 wraps around). This function is to | |
| * be used by drivers which can do HW encryption but need to compute | |
| * to phase 1/2 key in SW. | |
| * | |
| * @keyconf: the parameter passed with the set key | |
| * @skb: the skb for which the key is needed | |
| * @type: TBD | |
| * @key: a buffer to which the key will be written | |
| */ | |
| void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, | |
| struct sk_buff *skb, | |
| enum ieee80211_tkip_key_type type, u8 *key); | |
| /** | |
| * ieee80211_wake_queue - wake specific queue | |
| * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
| * @queue: queue number (counted from zero). | |
| * | |
| * Drivers should use this function instead of netif_wake_queue. | |
| */ | |
| void ieee80211_wake_queue(struct ieee80211_hw *hw, int queue); | |
| /** | |
| * ieee80211_stop_queue - stop specific queue | |
| * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
| * @queue: queue number (counted from zero). | |
| * | |
| * Drivers should use this function instead of netif_stop_queue. | |
| */ | |
| void ieee80211_stop_queue(struct ieee80211_hw *hw, int queue); | |
| /** | |
| * ieee80211_queue_stopped - test status of the queue | |
| * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
| * @queue: queue number (counted from zero). | |
| * | |
| * Drivers should use this function instead of netif_stop_queue. | |
| */ | |
| int ieee80211_queue_stopped(struct ieee80211_hw *hw, int queue); | |
| /** | |
| * ieee80211_stop_queues - stop all queues | |
| * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
| * | |
| * Drivers should use this function instead of netif_stop_queue. | |
| */ | |
| void ieee80211_stop_queues(struct ieee80211_hw *hw); | |
| /** | |
| * ieee80211_wake_queues - wake all queues | |
| * @hw: pointer as obtained from ieee80211_alloc_hw(). | |
| * | |
| * Drivers should use this function instead of netif_wake_queue. | |
| */ | |
| void ieee80211_wake_queues(struct ieee80211_hw *hw); | |
| /** | |
| * ieee80211_scan_completed - completed hardware scan | |
| * | |
| * When hardware scan offload is used (i.e. the hw_scan() callback is | |
| * assigned) this function needs to be called by the driver to notify | |
| * mac80211 that the scan finished. | |
| * | |
| * @hw: the hardware that finished the scan | |
| * @aborted: set to true if scan was aborted | |
| */ | |
| void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted); | |
| /** | |
| * ieee80211_iterate_active_interfaces - iterate active interfaces | |
| * | |
| * This function iterates over the interfaces associated with a given | |
| * hardware that are currently active and calls the callback for them. | |
| * This function allows the iterator function to sleep, when the iterator | |
| * function is atomic @ieee80211_iterate_active_interfaces_atomic can | |
| * be used. | |
| * | |
| * @hw: the hardware struct of which the interfaces should be iterated over | |
| * @iterator: the iterator function to call | |
| * @data: first argument of the iterator function | |
| */ | |
| void ieee80211_iterate_active_interfaces(struct ieee80211_hw *hw, | |
| void (*iterator)(void *data, u8 *mac, | |
| struct ieee80211_vif *vif), | |
| void *data); | |
| /** | |
| * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces | |
| * | |
| * This function iterates over the interfaces associated with a given | |
| * hardware that are currently active and calls the callback for them. | |
| * This function requires the iterator callback function to be atomic, | |
| * if that is not desired, use @ieee80211_iterate_active_interfaces instead. | |
| * | |
| * @hw: the hardware struct of which the interfaces should be iterated over | |
| * @iterator: the iterator function to call, cannot sleep | |
| * @data: first argument of the iterator function | |
| */ | |
| void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw, | |
| void (*iterator)(void *data, | |
| u8 *mac, | |
| struct ieee80211_vif *vif), | |
| void *data); | |
| /** | |
| * ieee80211_queue_work - add work onto the mac80211 workqueue | |
| * | |
| * Drivers and mac80211 use this to add work onto the mac80211 workqueue. | |
| * This helper ensures drivers are not queueing work when they should not be. | |
| * | |
| * @hw: the hardware struct for the interface we are adding work for | |
| * @work: the work we want to add onto the mac80211 workqueue | |
| */ | |
| void ieee80211_queue_work(struct ieee80211_hw *hw, struct work_struct *work); | |
| /** | |
| * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue | |
| * | |
| * Drivers and mac80211 use this to queue delayed work onto the mac80211 | |
| * workqueue. | |
| * | |
| * @hw: the hardware struct for the interface we are adding work for | |
| * @dwork: delayable work to queue onto the mac80211 workqueue | |
| * @delay: number of jiffies to wait before queueing | |
| */ | |
| void ieee80211_queue_delayed_work(struct ieee80211_hw *hw, | |
| struct delayed_work *dwork, | |
| unsigned long delay); | |
| /** | |
| * ieee80211_start_tx_ba_session - Start a tx Block Ack session. | |
| * @sta: the station for which to start a BA session | |
| * @tid: the TID to BA on. | |
| * | |
| * Return: success if addBA request was sent, failure otherwise | |
| * | |
| * Although mac80211/low level driver/user space application can estimate | |
| * the need to start aggregation on a certain RA/TID, the session level | |
| * will be managed by the mac80211. | |
| */ | |
| int ieee80211_start_tx_ba_session(struct ieee80211_sta *sta, u16 tid); | |
| /** | |
| * ieee80211_start_tx_ba_cb - low level driver ready to aggregate. | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback | |
| * @ra: receiver address of the BA session recipient. | |
| * @tid: the TID to BA on. | |
| * | |
| * This function must be called by low level driver once it has | |
| * finished with preparations for the BA session. | |
| */ | |
| void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid); | |
| /** | |
| * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback | |
| * @ra: receiver address of the BA session recipient. | |
| * @tid: the TID to BA on. | |
| * | |
| * This function must be called by low level driver once it has | |
| * finished with preparations for the BA session. | |
| * This version of the function is IRQ-safe. | |
| */ | |
| void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, | |
| u16 tid); | |
| /** | |
| * ieee80211_stop_tx_ba_session - Stop a Block Ack session. | |
| * @sta: the station whose BA session to stop | |
| * @tid: the TID to stop BA. | |
| * @initiator: if indicates initiator DELBA frame will be sent. | |
| * | |
| * Return: error if no sta with matching da found, success otherwise | |
| * | |
| * Although mac80211/low level driver/user space application can estimate | |
| * the need to stop aggregation on a certain RA/TID, the session level | |
| * will be managed by the mac80211. | |
| */ | |
| int ieee80211_stop_tx_ba_session(struct ieee80211_sta *sta, u16 tid, | |
| enum ieee80211_back_parties initiator); | |
| /** | |
| * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate. | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback | |
| * @ra: receiver address of the BA session recipient. | |
| * @tid: the desired TID to BA on. | |
| * | |
| * This function must be called by low level driver once it has | |
| * finished with preparations for the BA session tear down. | |
| */ | |
| void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid); | |
| /** | |
| * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback | |
| * @ra: receiver address of the BA session recipient. | |
| * @tid: the desired TID to BA on. | |
| * | |
| * This function must be called by low level driver once it has | |
| * finished with preparations for the BA session tear down. | |
| * This version of the function is IRQ-safe. | |
| */ | |
| void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, const u8 *ra, | |
| u16 tid); | |
| /** | |
| * ieee80211_find_sta - find a station | |
| * | |
| * @vif: virtual interface to look for station on | |
| * @addr: station's address | |
| * | |
| * This function must be called under RCU lock and the | |
| * resulting pointer is only valid under RCU lock as well. | |
| */ | |
| struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif, | |
| const u8 *addr); | |
| /** | |
| * ieee80211_find_sta_by_hw - find a station on hardware | |
| * | |
| * @hw: pointer as obtained from ieee80211_alloc_hw() | |
| * @addr: station's address | |
| * | |
| * This function must be called under RCU lock and the | |
| * resulting pointer is only valid under RCU lock as well. | |
| * | |
| * NOTE: This function should not be used! When mac80211 is converted | |
| * internally to properly keep track of stations on multiple | |
| * virtual interfaces, it will not always know which station to | |
| * return here since a single address might be used by multiple | |
| * logical stations (e.g. consider a station connecting to another | |
| * BSSID on the same AP hardware without disconnecting first). | |
| * | |
| * DO NOT USE THIS FUNCTION. | |
| */ | |
| struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw, | |
| const u8 *addr); | |
| /** | |
| * ieee80211_sta_block_awake - block station from waking up | |
| * @hw: the hardware | |
| * @pubsta: the station | |
| * @block: whether to block or unblock | |
| * | |
| * Some devices require that all frames that are on the queues | |
| * for a specific station that went to sleep are flushed before | |
| * a poll response or frames after the station woke up can be | |
| * delivered to that it. Note that such frames must be rejected | |
| * by the driver as filtered, with the appropriate status flag. | |
| * | |
| * This function allows implementing this mode in a race-free | |
| * manner. | |
| * | |
| * To do this, a driver must keep track of the number of frames | |
| * still enqueued for a specific station. If this number is not | |
| * zero when the station goes to sleep, the driver must call | |
| * this function to force mac80211 to consider the station to | |
| * be asleep regardless of the station's actual state. Once the | |
| * number of outstanding frames reaches zero, the driver must | |
| * call this function again to unblock the station. That will | |
| * cause mac80211 to be able to send ps-poll responses, and if | |
| * the station queried in the meantime then frames will also | |
| * be sent out as a result of this. Additionally, the driver | |
| * will be notified that the station woke up some time after | |
| * it is unblocked, regardless of whether the station actually | |
| * woke up while blocked or not. | |
| */ | |
| void ieee80211_sta_block_awake(struct ieee80211_hw *hw, | |
| struct ieee80211_sta *pubsta, bool block); | |
| /** | |
| * ieee80211_beacon_loss - inform hardware does not receive beacons | |
| * | |
| * @vif: &struct ieee80211_vif pointer from the add_interface callback. | |
| * | |
| * When beacon filtering is enabled with IEEE80211_HW_BEACON_FILTERING and | |
| * IEEE80211_CONF_PS is set, the driver needs to inform whenever the | |
| * hardware is not receiving beacons with this function. | |
| */ | |
| void ieee80211_beacon_loss(struct ieee80211_vif *vif); | |
| /* Rate control API */ | |
| /** | |
| * enum rate_control_changed - flags to indicate which parameter changed | |
| * | |
| * @IEEE80211_RC_HT_CHANGED: The HT parameters of the operating channel have | |
| * changed, rate control algorithm can update its internal state if needed. | |
| */ | |
| enum rate_control_changed { | |
| IEEE80211_RC_HT_CHANGED = BIT(0) | |
| }; | |
| /** | |
| * struct ieee80211_tx_rate_control - rate control information for/from RC algo | |
| * | |
| * @hw: The hardware the algorithm is invoked for. | |
| * @sband: The band this frame is being transmitted on. | |
| * @bss_conf: the current BSS configuration | |
| * @reported_rate: The rate control algorithm can fill this in to indicate | |
| * which rate should be reported to userspace as the current rate and | |
| * used for rate calculations in the mesh network. | |
| * @rts: whether RTS will be used for this frame because it is longer than the | |
| * RTS threshold | |
| * @short_preamble: whether mac80211 will request short-preamble transmission | |
| * if the selected rate supports it | |
| * @max_rate_idx: user-requested maximum rate (not MCS for now) | |
| * @skb: the skb that will be transmitted, the control information in it needs | |
| * to be filled in | |
| */ | |
| struct ieee80211_tx_rate_control { | |
| struct ieee80211_hw *hw; | |
| struct ieee80211_supported_band *sband; | |
| struct ieee80211_bss_conf *bss_conf; | |
| struct sk_buff *skb; | |
| struct ieee80211_tx_rate reported_rate; | |
| bool rts, short_preamble; | |
| u8 max_rate_idx; | |
| }; | |
| struct rate_control_ops { | |
| struct module *module; | |
| const char *name; | |
| void *(*alloc)(struct ieee80211_hw *hw, struct dentry *debugfsdir); | |
| void (*free)(void *priv); | |
| void *(*alloc_sta)(void *priv, struct ieee80211_sta *sta, gfp_t gfp); | |
| void (*rate_init)(void *priv, struct ieee80211_supported_band *sband, | |
| struct ieee80211_sta *sta, void *priv_sta); | |
| void (*rate_update)(void *priv, struct ieee80211_supported_band *sband, | |
| struct ieee80211_sta *sta, | |
| void *priv_sta, u32 changed); | |
| void (*free_sta)(void *priv, struct ieee80211_sta *sta, | |
| void *priv_sta); | |
| void (*tx_status)(void *priv, struct ieee80211_supported_band *sband, | |
| struct ieee80211_sta *sta, void *priv_sta, | |
| struct sk_buff *skb); | |
| void (*get_rate)(void *priv, struct ieee80211_sta *sta, void *priv_sta, | |
| struct ieee80211_tx_rate_control *txrc); | |
| void (*add_sta_debugfs)(void *priv, void *priv_sta, | |
| struct dentry *dir); | |
| void (*remove_sta_debugfs)(void *priv, void *priv_sta); | |
| }; | |
| static inline int rate_supported(struct ieee80211_sta *sta, | |
| enum ieee80211_band band, | |
| int index) | |
| { | |
| return (sta == NULL || sta->supp_rates[band] & BIT(index)); | |
| } | |
| /** | |
| * rate_control_send_low - helper for drivers for management/no-ack frames | |
| * | |
| * Rate control algorithms that agree to use the lowest rate to | |
| * send management frames and NO_ACK data with the respective hw | |
| * retries should use this in the beginning of their mac80211 get_rate | |
| * callback. If true is returned the rate control can simply return. | |
| * If false is returned we guarantee that sta and sta and priv_sta is | |
| * not null. | |
| * | |
| * Rate control algorithms wishing to do more intelligent selection of | |
| * rate for multicast/broadcast frames may choose to not use this. | |
| * | |
| * @sta: &struct ieee80211_sta pointer to the target destination. Note | |
| * that this may be null. | |
| * @priv_sta: private rate control structure. This may be null. | |
| * @txrc: rate control information we sholud populate for mac80211. | |
| */ | |
| bool rate_control_send_low(struct ieee80211_sta *sta, | |
| void *priv_sta, | |
| struct ieee80211_tx_rate_control *txrc); | |
| static inline s8 | |
| rate_lowest_index(struct ieee80211_supported_band *sband, | |
| struct ieee80211_sta *sta) | |
| { | |
| int i; | |
| for (i = 0; i < sband->n_bitrates; i++) | |
| if (rate_supported(sta, sband->band, i)) | |
| return i; | |
| /* warn when we cannot find a rate. */ | |
| WARN_ON(1); | |
| return 0; | |
| } | |
| static inline | |
| bool rate_usable_index_exists(struct ieee80211_supported_band *sband, | |
| struct ieee80211_sta *sta) | |
| { | |
| unsigned int i; | |
| for (i = 0; i < sband->n_bitrates; i++) | |
| if (rate_supported(sta, sband->band, i)) | |
| return true; | |
| return false; | |
| } | |
| int ieee80211_rate_control_register(struct rate_control_ops *ops); | |
| void ieee80211_rate_control_unregister(struct rate_control_ops *ops); | |
| static inline bool | |
| conf_is_ht20(struct ieee80211_conf *conf) | |
| { | |
| return conf->channel_type == NL80211_CHAN_HT20; | |
| } | |
| static inline bool | |
| conf_is_ht40_minus(struct ieee80211_conf *conf) | |
| { | |
| return conf->channel_type == NL80211_CHAN_HT40MINUS; | |
| } | |
| static inline bool | |
| conf_is_ht40_plus(struct ieee80211_conf *conf) | |
| { | |
| return conf->channel_type == NL80211_CHAN_HT40PLUS; | |
| } | |
| static inline bool | |
| conf_is_ht40(struct ieee80211_conf *conf) | |
| { | |
| return conf_is_ht40_minus(conf) || conf_is_ht40_plus(conf); | |
| } | |
| static inline bool | |
| conf_is_ht(struct ieee80211_conf *conf) | |
| { | |
| return conf->channel_type != NL80211_CHAN_NO_HT; | |
| } | |
| #endif /* MAC80211_H */ |