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diff --git a/libdde-linux26/contrib/include/net/mac80211.h b/libdde-linux26/contrib/include/net/mac80211.h
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+/*
+ * 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 */