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Diffstat (limited to 'libdde-linux26/libdde_linux26/contrib/include/net/mac80211.h')
| -rw-r--r-- | libdde-linux26/libdde_linux26/contrib/include/net/mac80211.h | 1965 |
1 files changed, 0 insertions, 1965 deletions
diff --git a/libdde-linux26/libdde_linux26/contrib/include/net/mac80211.h b/libdde-linux26/libdde_linux26/contrib/include/net/mac80211.h deleted file mode 100644 index 559422fc..00000000 --- a/libdde-linux26/libdde_linux26/contrib/include/net/mac80211.h +++ /dev/null @@ -1,1965 +0,0 @@ -/* - * mac80211 <-> driver interface - * - * Copyright 2002-2005, Devicescape Software, Inc. - * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> - * Copyright 2007-2008 Johannes Berg <johannes@sipsolutions.net> - * - * 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/wireless.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. - */ - -/** - * struct ieee80211_ht_bss_info - describing BSS's HT characteristics - * - * This structure describes most essential parameters needed - * to describe 802.11n HT characteristics in a BSS. - * - * @primary_channel: channel number of primery channel - * @bss_cap: 802.11n's general BSS capabilities (e.g. channel width) - * @bss_op_mode: 802.11n's BSS operation modes (e.g. HT protection) - */ -struct ieee80211_ht_bss_info { - u8 primary_channel; - u8 bss_cap; /* use IEEE80211_HT_IE_CHA_ */ - u8 bss_op_mode; /* use IEEE80211_HT_IE_ */ -}; - -/** - * enum ieee80211_max_queues - maximum number of queues - * - * @IEEE80211_MAX_QUEUES: Maximum number of regular device queues. - * @IEEE80211_MAX_AMPDU_QUEUES: Maximum number of queues usable - * for A-MPDU operation. - */ -enum ieee80211_max_queues { - IEEE80211_MAX_QUEUES = 16, - IEEE80211_MAX_AMPDU_QUEUES = 16, -}; - -/** - * 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 - */ -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, -}; - -/** - * struct ieee80211_bss_ht_conf - BSS's changing HT configuration - * @operation_mode: HT operation mode (like in &struct ieee80211_ht_info) - */ -struct ieee80211_bss_ht_conf { - u16 operation_mode; -}; - -/** - * 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 - * @ht: BSS's HT configuration - * @basic_rates: bitmap of basic rates, each bit stands for an - * index into the rate table configured by the driver in - * the current band. - */ -struct ieee80211_bss_conf { - /* association related data */ - bool assoc; - u16 aid; - /* erp related data */ - bool use_cts_prot; - bool use_short_preamble; - bool use_short_slot; - u8 dtim_period; - u16 beacon_int; - u16 assoc_capability; - u64 timestamp; - u64 basic_rates; - struct ieee80211_bss_ht_conf ht; -}; - -/** - * 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: request 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. - * @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) - */ -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), -}; - -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_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 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. - * @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; - /* 8 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; -} - -/** - * 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_RADIOTAP: This frame starts with a radiotap header. - * @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 - */ -enum mac80211_rx_flags { - RX_FLAG_MMIC_ERROR = 1<<0, - RX_FLAG_DECRYPTED = 1<<1, - RX_FLAG_RADIOTAP = 1<<2, - 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, -}; - -/** - * 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. - * - * @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. - * @qual: overall signal quality indication, in percent (0-100). - * @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 qual; - int antenna; - int rate_idx; - int flag; -}; - -/** - * enum ieee80211_conf_flags - configuration flags - * - * Flags to define PHY configuration options - * - * @IEEE80211_CONF_RADIOTAP: add radiotap header at receive time (if supported) - * @IEEE80211_CONF_PS: Enable 802.11 power save mode - */ -enum ieee80211_conf_flags { - IEEE80211_CONF_RADIOTAP = (1<<0), - IEEE80211_CONF_PS = (1<<1), -}; - -/* XXX: remove all this once drivers stop trying to use it */ -static inline int __deprecated __IEEE80211_CONF_SHORT_SLOT_TIME(void) -{ - return 0; -} -#define IEEE80211_CONF_SHORT_SLOT_TIME (__IEEE80211_CONF_SHORT_SLOT_TIME()) - -struct ieee80211_ht_conf { - bool enabled; - enum nl80211_channel_type channel_type; -}; - -/** - * enum ieee80211_conf_changed - denotes which configuration changed - * - * @IEEE80211_CONF_CHANGE_RADIO_ENABLED: the value of radio_enabled changed - * @IEEE80211_CONF_CHANGE_BEACON_INTERVAL: the beacon interval changed - * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed - * @IEEE80211_CONF_CHANGE_RADIOTAP: the radiotap flag changed - * @IEEE80211_CONF_CHANGE_PS: the PS flag changed - * @IEEE80211_CONF_CHANGE_POWER: the TX power changed - * @IEEE80211_CONF_CHANGE_CHANNEL: the channel changed - * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed - * @IEEE80211_CONF_CHANGE_HT: HT configuration changed - */ -enum ieee80211_conf_changed { - IEEE80211_CONF_CHANGE_RADIO_ENABLED = BIT(0), - IEEE80211_CONF_CHANGE_BEACON_INTERVAL = BIT(1), - IEEE80211_CONF_CHANGE_LISTEN_INTERVAL = BIT(2), - IEEE80211_CONF_CHANGE_RADIOTAP = 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_HT = BIT(8), -}; - -/** - * struct ieee80211_conf - configuration of the device - * - * This struct indicates how the driver shall configure the hardware. - * - * @radio_enabled: when zero, driver is required to switch off the radio. - * @beacon_int: beacon interval (TODO make interface config) - * @listen_interval: listen interval in units of beacon interval - * @flags: configuration flags defined above - * @power_level: requested transmit power (in dBm) - * @channel: the channel to tune to - * @ht: the HT configuration for the device - * @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 - */ -struct ieee80211_conf { - int beacon_int; - u32 flags; - int power_level; - - u16 listen_interval; - bool radio_enabled; - - u8 long_frame_max_tx_count, short_frame_max_tx_count; - - struct ieee80211_channel *channel; - struct ieee80211_ht_conf ht; -}; - -/** - * 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 - * @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; - /* 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; -} - -/** - * struct ieee80211_if_init_conf - initial configuration of an interface - * - * @vif: pointer to a driver-use per-interface structure. The pointer - * itself is also used for various functions including - * ieee80211_beacon_get() and ieee80211_get_buffered_bc(). - * @type: one of &enum nl80211_iftype constants. Determines the type of - * added/removed interface. - * @mac_addr: pointer to MAC address of the interface. This pointer is valid - * until the interface is removed (i.e. it cannot be used after - * remove_interface() callback was called for this interface). - * - * This structure is used in add_interface() and remove_interface() - * callbacks of &struct ieee80211_hw. - * - * When you allow multiple interfaces to be added to your PHY, take care - * that the hardware can actually handle multiple MAC addresses. However, - * also take care that when there's no interface left with mac_addr != %NULL - * you remove the MAC address from the device to avoid acknowledging packets - * in pure monitor mode. - */ -struct ieee80211_if_init_conf { - enum nl80211_iftype type; - struct ieee80211_vif *vif; - void *mac_addr; -}; - -/** - * enum ieee80211_if_conf_change - interface config change flags - * - * @IEEE80211_IFCC_BSSID: The BSSID changed. - * @IEEE80211_IFCC_BEACON: The beacon for this interface changed - * (currently AP and MESH only), use ieee80211_beacon_get(). - */ -enum ieee80211_if_conf_change { - IEEE80211_IFCC_BSSID = BIT(0), - IEEE80211_IFCC_BEACON = BIT(1), -}; - -/** - * struct ieee80211_if_conf - configuration of an interface - * - * @changed: parameters that have changed, see &enum ieee80211_if_conf_change. - * @bssid: BSSID of the network we are associated to/creating. - * - * This structure is passed to the config_interface() callback of - * &struct ieee80211_hw. - */ -struct ieee80211_if_conf { - u32 changed; - u8 *bssid; -}; - -/** - * enum ieee80211_key_alg - key algorithm - * @ALG_WEP: WEP40 or WEP104 - * @ALG_TKIP: TKIP - * @ALG_CCMP: CCMP (AES) - */ -enum ieee80211_key_alg { - ALG_WEP, - ALG_TKIP, - ALG_CCMP, -}; - -/** - * enum ieee80211_key_len - key length - * @LEN_WEP40: WEP 5-byte long key - * @LEN_WEP104: WEP 13-byte long key - */ -enum ieee80211_key_len { - LEN_WEP40 = 5, - LEN_WEP104 = 13, -}; - -/** - * 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. - */ -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, -}; - -/** - * 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: FIXME - * @iv_len: FIXME - */ -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 { - u64 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_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_DB: - * Hardware gives signal values in dB, decibel difference from an - * arbitrary, fixed reference. We expect values between 0 and @max_signal. - * If possible please provide 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_NO_STACK_DYNAMIC_PS: - * Hardware which has dynamic power save support, meaning - * that power save is enabled in idle periods, and don't need support - * from stack. - */ -enum ieee80211_hw_flags { - 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_DB = 1<<6, - IEEE80211_HW_SIGNAL_DBM = 1<<7, - IEEE80211_HW_NOISE_DBM = 1<<8, - IEEE80211_HW_SPECTRUM_MGMT = 1<<9, - IEEE80211_HW_AMPDU_AGGREGATION = 1<<10, - IEEE80211_HW_NO_STACK_DYNAMIC_PS = 1<<11, -}; - -/** - * 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. - * - * @workqueue: single threaded workqueue available for driver use, - * allocated by mac80211 on registration and flushed when an - * interface is removed. - * NOTICE: All work performed on this workqueue should NEVER - * acquire the RTNL lock (i.e. Don't use the function - * ieee80211_iterate_active_interfaces()) - * - * @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. - * - * @ampdu_queues: number of available hardware transmit queues - * for A-MPDU packets, these have no access parameters - * because they're used only for A-MPDU frames. Note that - * mac80211 will not currently use any of the regular queues - * for aggregation. - * - * @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; - struct workqueue_struct *workqueue; - 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 ampdu_queues; - u16 max_listen_interval; - s8 max_signal; - u8 max_rates; - u8 max_rate_tries; -}; - -/** - * 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 int ieee80211_num_regular_queues(struct ieee80211_hw *hw) -{ - return hw->queues; -} - -static inline int ieee80211_num_queues(struct ieee80211_hw *hw) -{ - return hw->queues + hw->ampdu_queues; -} - -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 an @address parameter that will be - * the broadcast address for default keys, the other station's hardware - * address for individual keys or the zero address for keys that will - * be used only for transmission. - * Multiple transmission keys with the same key index may be used when - * VLANs are configured for an access point. - * - * The @local_address parameter will always be set to our own address, - * this is only relevant if you support multiple local addresses. - * - * 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: 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. - * - * The configure_filter() callback is invoked with the parameters - * @mc_count and @mc_list for the combined multicast address list - * of all virtual interfaces, @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, if PROMISC_IN_BSS is not set then - * only those addressed to this station - * - * @FIF_OTHER_BSS: pass frames destined to other BSSes - */ -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, -}; - -/** - * 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. - * @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_RESUME: resume TX aggregation - */ -enum ieee80211_ampdu_mlme_action { - IEEE80211_AMPDU_RX_START, - IEEE80211_AMPDU_RX_STOP, - IEEE80211_AMPDU_TX_START, - IEEE80211_AMPDU_TX_STOP, - IEEE80211_AMPDU_TX_RESUME, -}; - -/** - * 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. - * 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. - * - * @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. - * Must be implemented. - * - * @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. - * - * @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. - * - * @config: Handler for configuration requests. IEEE 802.11 code calls this - * function to change hardware configuration, e.g., channel. - * - * @config_interface: Handler for configuration requests related to interfaces - * (e.g. BSSID changes.) - * - * @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. - * - * @configure_filter: Configure the device's RX filter. - * See the section "Frame filtering" for more information. - * This callback must be implemented and atomic. - * - * @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 can sleep, and is only called between add_interface - * and remove_interface calls, i.e. while the interface with the - * given local_address is enabled. - * - * @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. - * - * @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. When the scan finishes, ieee80211_scan_completed() must be - * called; note that it also must be called when the scan cannot finish - * because the hardware is turned off! Anything else is a bug! - * - * @get_stats: return low-level statistics - * - * @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. - * - * @set_rts_threshold: Configuration of RTS threshold (if device needs it) - * - * @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. - * - * @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 + - * hw->ampdu_queues items. - * - * @get_tsf: Get the current TSF timer value from firmware/hardware. Currently, - * this is only used for IBSS mode debugging and, as such, is not a - * required function. Must be atomic. - * - * @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. - * - * @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. - * - * @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. - */ -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_if_init_conf *conf); - void (*remove_interface)(struct ieee80211_hw *hw, - struct ieee80211_if_init_conf *conf); - int (*config)(struct ieee80211_hw *hw, u32 changed); - int (*config_interface)(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_if_conf *conf); - void (*bss_info_changed)(struct ieee80211_hw *hw, - struct ieee80211_vif *vif, - struct ieee80211_bss_conf *info, - u32 changed); - void (*configure_filter)(struct ieee80211_hw *hw, - unsigned int changed_flags, - unsigned int *total_flags, - int mc_count, struct dev_addr_list *mc_list); - 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, - const u8 *local_address, const u8 *address, - 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, u8 *ssid, size_t len); - 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 (*reset_tsf)(struct ieee80211_hw *hw); - int (*tx_last_beacon)(struct ieee80211_hw *hw); - int (*ampdu_action)(struct ieee80211_hw *hw, - enum ieee80211_ampdu_mlme_action action, - struct ieee80211_sta *sta, u16 tid, u16 *ssn); -}; - -/** - * 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); - -/* trick to avoid symbol clashes with the ieee80211 subsystem */ -void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ieee80211_rx_status *status); - -/** - * 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 or a radiotap - * header if %RX_FLAG_RADIOTAP is set in the @status flags. - * - * 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_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 - * @status: status of this frame; the status pointer need not be valid - * after this function returns - */ -static inline void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb, - struct ieee80211_rx_status *status) -{ - __ieee80211_rx(hw, skb, status); -} - -/** - * ieee80211_rx_irqsafe - receive frame - * - * Like ieee80211_rx() but can be called in IRQ context - * (internally defers to a tasklet.) - * - * Calls to this function and ieee80211_rx() 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 - * @status: status of this frame; the status pointer need not be valid - * after this function returns and is not freed by mac80211, - * it is recommended that it points to a stack area - */ -void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, - struct sk_buff *skb, - struct ieee80211_rx_status *status); - -/** - * 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 - beacon generation function - * @hw: pointer obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. - * - * If the beacon frames are generated by the host system (i.e., not in - * hardware/firmware), the low-level driver uses this function to receive - * the next beacon frame from the 802.11 code. The low-level is responsible - * for calling this function before beacon data is needed (e.g., based on - * hardware interrupt). Returned skb is used only once and low-level driver - * is responsible for freeing it. - */ -struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw, - struct ieee80211_vif *vif); - -/** - * ieee80211_rts_get - RTS frame generation function - * @hw: pointer obtained from ieee80211_alloc_hw(). - * @vif: &struct ieee80211_vif pointer from &struct ieee80211_if_init_conf. - * @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 &struct ieee80211_if_init_conf. - * @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 &struct ieee80211_if_init_conf. - * @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 &struct ieee80211_if_init_conf. - * @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 &struct ieee80211_if_init_conf. - * @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 &struct ieee80211_if_init_conf. - * - * 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_hdrlen_from_skb - get header length from data - * - * Given an skb with a raw 802.11 header at the data pointer this function - * returns the 802.11 header length in bytes (not including encryption - * headers). If the data in the sk_buff is too short to contain a valid 802.11 - * header the function returns 0. - * - * @skb: the frame - */ -unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); - -/** - * ieee80211_hdrlen - get header length in bytes from frame control - * @fc: frame control field in little-endian format - */ -unsigned int ieee80211_hdrlen(__le16 fc); - -/** - * 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 - */ -void ieee80211_scan_completed(struct ieee80211_hw *hw); - -/** - * 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_start_tx_ba_session - Start a tx Block Ack session. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient - * @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_hw *hw, u8 *ra, u16 tid); - -/** - * ieee80211_start_tx_ba_cb - low level driver ready to aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @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_hw *hw, u8 *ra, u16 tid); - -/** - * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @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_hw *hw, const u8 *ra, - u16 tid); - -/** - * ieee80211_stop_tx_ba_session - Stop a Block Ack session. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @ra: receiver address of the BA session recipient - * @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_hw *hw, - u8 *ra, u16 tid, - enum ieee80211_back_parties initiator); - -/** - * ieee80211_stop_tx_ba_cb - low level driver ready to stop aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @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_hw *hw, u8 *ra, u8 tid); - -/** - * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate. - * @hw: pointer as obtained from ieee80211_alloc_hw(). - * @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_hw *hw, const u8 *ra, - u16 tid); - -/** - * ieee80211_find_sta - find a station - * - * @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. - */ -struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw, - const u8 *addr); - - -/* Rate control API */ - -/** - * 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 (*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)); -} - -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; -} - - -int ieee80211_rate_control_register(struct rate_control_ops *ops); -void ieee80211_rate_control_unregister(struct rate_control_ops *ops); - -#endif /* MAC80211_H */ |