1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * mac80211 <-> driver interface
5  * Copyright 2002-2005, Devicescape Software, Inc.
6  * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
7  * Copyright 2007-2010	Johannes Berg <johannes@sipsolutions.net>
8  * Copyright 2013-2014  Intel Mobile Communications GmbH
9  * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
10  * Copyright (C) 2018 - 2021 Intel Corporation
30  * only partial functionality in hard- or firmware. This document
31  * defines the interface between mac80211 and low-level hardware
39  * called in hardware interrupt context. The low-level driver must not call any
41  * call, the low-level driver should first ACK the interrupt and perform the
46  *	 use the non-IRQ-safe functions!
76  * mac80211 provides its own workqueue for drivers and internal mac80211 use.
89  * DOC: mac80211 software tx queueing
101  * Intermediate queues (struct ieee80211_txq) are kept per-sta per-tid, with
102  * another per-sta for non-data/non-mgmt and bufferable management frames, and
103  * a single per-vif queue for multicast data frames.
105  * The driver is expected to initialize its private per-queue data for stations
131  * enum ieee80211_max_queues - maximum number of queues
138 	IEEE80211_MAX_QUEUE_MAP =	BIT(IEEE80211_MAX_QUEUES) - 1,
144  * enum ieee80211_ac_numbers - AC numbers as used in mac80211
158  * struct ieee80211_tx_queue_params - transmit queue configuration
165  *	2^n-1 in the range 1..32767]
169  * @uapsd: is U-APSD mode enabled for the queue
192  * enum ieee80211_chanctx_change - change flag for channel context
209  * struct ieee80211_chanctx_conf - channel context that vifs may be tuned to
211  * This is the driver-visible part. The ieee80211_chanctx
237  * enum ieee80211_chanctx_switch_mode - channel context switch mode
245  *      implement this as an on-the-fly chandef switch of the existing
256  * struct ieee80211_vif_chanctx_switch - vif chanctx switch information
274  * enum ieee80211_bss_change - BSS change notification flags
301  * @BSS_CHANGED_PS: PS changed for this BSS (STA mode)
302  * @BSS_CHANGED_TXPOWER: TX power setting changed for this interface
303  * @BSS_CHANGED_P2P_PS: P2P powersave settings (CTWindow, opportunistic PS)
311  * @BSS_CHANGED_MU_GROUPS: VHT MU-MIMO group id or user position changed
370  * enum ieee80211_event_type - event to be notified to the low level driver
386  * enum ieee80211_rssi_event_data - relevant when event type is %RSSI_EVENT
396  * struct ieee80211_rssi_event - data attached to an %RSSI_EVENT
404  * enum ieee80211_mlme_event_data - relevant when event type is %MLME_EVENT
418  * enum ieee80211_mlme_event_status - relevant when event type is %MLME_EVENT
430  * struct ieee80211_mlme_event - data attached to an %MLME_EVENT
442  * struct ieee80211_ba_event - data attached for BlockAck related events
454  * struct ieee80211_event - event to be sent to the driver
471  * struct ieee80211_mu_group_data - STA's VHT MU-MIMO group data
473  * This structure describes the group id data of VHT MU-MIMO
475  * @membership: 64 bits array - a bit is set if station is member of the group
484  * struct ieee80211_ftm_responder_params - FTM responder parameters
499  * struct ieee80211_fils_discovery - FILS discovery parameters from
500  * IEEE Std 802.11ai-2016, Annex C.3 MIB detail.
502  * @min_interval: Minimum packet interval in TUs (0 - 10000)
503  * @max_interval: Maximum packet interval in TUs (0 - 10000)
511  * struct ieee80211_bss_conf - holds the BSS's changing parameters
517  * @multi_sta_back_32bit: supports BA bitmap of 32-bits in Multi-STA BACK
519  * @ack_enabled: indicates support to receive a multi-TID that solicits either
540  *	with the %BSS_CHANGED_BEACON_INFO flag, will be non-zero then.
560  * @beacon_rate: associated AP's beacon TX rate
561  * @mcast_rate: per-band multicast rate index + 1 (0: disabled)
564  * @chandef: Channel definition for this BSS -- the hardware might be
566  * @mu_group: VHT MU-MIMO group membership data
587  * @qos: This is a QoS-enabled BSS.
591  * @ps: power-save mode (STA only). This flag is NOT affected by
595  * @hidden_ssid: The SSID of the current vif is hidden. Only valid in AP-mode.
596  * @txpower: TX power in dBm.  INT_MIN means not configured.
597  * @txpower_type: TX power adjustment used to control per packet Transmit
605  *	to use P2P PS mechanism or not. AP/P2P GO is not allowed to use P2P PS
606  *	if it has associated clients without P2P PS support.
676 	bool ps;  member
708  * enum mac80211_tx_info_flags - flags to describe transmission information/status
712  * @IEEE80211_TX_CTL_REQ_TX_STATUS: require TX status callback for this frame.
717  *	assign sequence numbers to QoS-data frames but cannot do so correctly
718  *	for non-QoS-data and management frames because beacons need them from
722  *	802.11-2007 7.1.3.4.1 paragraph 3. This flag will always be set for
729  * @IEEE80211_TX_CTL_AMPDU: this frame should be sent as part of an A-MPDU
730  * @IEEE80211_TX_CTL_INJECTED: Frame was injected, internal to mac80211.
745  * @IEEE80211_TX_CTL_RATE_CTRL_PROBE: internal to mac80211, can be
748  * @IEEE80211_TX_INTFL_OFFCHAN_TX_OK: Internal to mac80211. Used to indicate
750  *	off-channel operation.
753  * @IEEE80211_TX_INTFL_RETRIED: completely internal to mac80211,
754  *	used to indicate that a frame was already retried due to PS
755  * @IEEE80211_TX_INTFL_DONT_ENCRYPT: completely internal to mac80211,
758  *	frame (PS-Poll or uAPSD) or a non-bufferable MMPDU and must
765  *	after TX status because the destination was asleep, it must not
771  *	MLME command (internal to mac80211 to figure out whether to send TX
774  * @IEEE80211_TX_CTL_STBC: Enables Space-Time Block Coding (STBC) for this
777  *	the off-channel channel when a remain-on-channel offload is done
778  *	in hardware -- normal packets still flow and are expected to be
790  *	PS-Poll responses.
800  *	This flag must not be set for frames that don't request no-ack
845  * enum mac80211_tx_control_flags - flags to describe transmit control
850  *	frame (PS-Poll or uAPSD).
852  * @IEEE80211_TX_CTRL_AMSDU: This frame is an A-MSDU frame
855  * @IEEE80211_TX_INTCFL_NEED_TXPROCESSING: completely internal to mac80211,
856  *	used to indicate that a pending frame requires TX processing before
864  * These flags are used in tx_info->control.flags.
880  * set by the tx handlers for each transmission attempt by the mac80211 stack.
892  * enum mac80211_rate_control_flags - per-rate flags set by the
895  * These flags are set by the Rate control algorithm for each rate during tx,
899  * @IEEE80211_TX_RC_USE_CTS_PROTECT: CTS-to-self protection is required.
946  * struct ieee80211_tx_rate - rate selection/status
952  * A value of -1 for @idx indicates an invalid rate and, if used
964  *    { 3, 2 }, { 2, 2 }, { 1, 4 }, { -1, 0 }, { -1, 0 }
972  *   { 3, 2 }, { 2, 2 }, { 1, 1 }, { -1, 0 } ...
989 	WARN_ON((nss - 1) & ~0x7);  in ieee80211_rate_set_vht()
990 	rate->idx = ((nss - 1) << 4) | mcs;  in ieee80211_rate_set_vht()
996 	return rate->idx & 0xF;  in ieee80211_rate_get_vht_mcs()
1002 	return (rate->idx >> 4) + 1;  in ieee80211_rate_get_vht_nss()
1006  * struct ieee80211_tx_info - skb transmit information
1008  * This structure is placed in skb->cb for three uses:
1009  *  (1) mac80211 TX control - mac80211 tells the driver what to do
1010  *  (2) driver internal use (if applicable)
1011  *  (3) TX status information - driver tells mac80211 what happened
1016  * @ack_frame_id: internal frame ID for TX status, used internally
1017  * @tx_time_est: TX time estimate in units of 4us, used internally
1019  * @control.rates: TX rates array to try
1114 	 * in increments of 4us and clamp the maximum to 2**12-1  in ieee80211_info_set_tx_time_est()
1116 	info->tx_time_est = min_t(u16, tx_time_est, 4095) >> 2;  in ieee80211_info_set_tx_time_est()
1117 	return info->tx_time_est << 2;  in ieee80211_info_set_tx_time_est()
1123 	return info->tx_time_est << 2;  in ieee80211_info_get_tx_time_est()
1127  * struct ieee80211_tx_status - extended tx status info for rate control
1130  * @info: Basic tx status information
1132  * @rate: The TX rate that was used when sending the packet
1144  * struct ieee80211_scan_ies - descriptors for different blocks of IEs
1165 	return (struct ieee80211_tx_info *)skb->cb;  in IEEE80211_SKB_CB()
1170 	return (struct ieee80211_rx_status *)skb->cb;  in IEEE80211_SKB_RXCB()
1174  * ieee80211_tx_info_clear_status - clear TX status
1179  * a number of things in TX status. This function clears everything
1180  * in the TX status but the rate control information (it does clear
1184  *	 info->driver_data! Use info->rate_driver_data
1199 		info->status.rates[i].count = 0;  in ieee80211_tx_info_clear_status()
1203 	memset(&info->status.ampdu_ack_len, 0,  in ieee80211_tx_info_clear_status()
1204 	       sizeof(struct ieee80211_tx_info) -  in ieee80211_tx_info_clear_status()
1210  * enum mac80211_rx_flags - receive flags
1226  *	de-duplication by itself.
1241  *	Valid only for data frames (mainly A-MPDU)
1242  * @RX_FLAG_AMPDU_DETAILS: A-MPDU details are known, in particular the reference
1244  *	each A-MPDU
1246  *	subframes of a single A-MPDU
1247  * @RX_FLAG_AMPDU_IS_LAST: this subframe is the last subframe of the A-MPDU
1262  * @RX_FLAG_AMSDU_MORE: Some drivers may prefer to report separate A-MSDU
1264  *	All, but the last MSDU from an A-MSDU should have this flag set. E.g.
1265  *	if an A-MSDU has 3 frames, the first 2 must have the flag set, while
1267  *	deal with retransmission/duplication recovery properly since A-MSDU
1269  *	either regular MSDU or singly A-MSDUs. Subframes must not be
1271  * @RX_FLAG_RADIOTAP_VENDOR_DATA: This frame contains vendor-specific
1272  *	radiotap data in the skb->data (before the frame) as described by
1279  * @RX_FLAG_AMPDU_EOF_BIT: Value of the EOF bit in the A-MPDU delimiter for this
1285  *	 - DATA3_DATA_MCS
1286  *	 - DATA3_DATA_DCM
1287  *	 - DATA3_CODING
1288  *	 - DATA5_GI
1289  *	 - DATA5_DATA_BW_RU_ALLOC
1290  *	 - DATA6_NSTS
1291  *	 - DATA3_STBC
1296  * @RX_FLAG_RADIOTAP_LSIG: L-SIG radiotap data is present
1298  *	the "0-length PSDU" field included there.  The value for it is
1339  * enum mac80211_rx_encoding_flags - MCS & bandwidth flags
1343  * @RX_ENC_FLAG_HT_GF: This frame was received in a HT-greenfield transmission,
1348  * @RX_ENC_FLAG_STBC_MASK: STBC 2 bit bitmask. 1 - Nss=1, 2 - Nss=2, 3 - Nss=3
1370  * struct ieee80211_rx_status - receive status
1372  * The low-level driver should provide this information (the subset
1376  * @mactime: value in microseconds of the 64-bit Time Synchronization Function
1385  *	for data (other) frames - for those it only affects radiotap reporting.
1392  * @chain_signal: per-chain signal strength, in dBm (unlike @signal, doesn't
1405  * @rx_flags: internal RX flags for mac80211
1406  * @ampdu_reference: A-MPDU reference number, must be a different value for
1407  *	each A-MPDU but the same for each subframe within one A-MPDU
1408  * @ampdu_delimiter_crc: A-MPDU delimiter CRC
1409  * @zero_length_psdu_type: radiotap type of the 0-length PSDU
1436 	return MHZ_TO_KHZ(rx_status->freq) +  in ieee80211_rx_status_to_khz()
1437 	       (rx_status->freq_offset ? 500 : 0);  in ieee80211_rx_status_to_khz()
1441  * struct ieee80211_vendor_radiotap - vendor radiotap data information
1447  *	description itself (which has a fixed 2-byte alignment)
1459  * This struct, including the vendor data, goes into the skb->data before
1474  * enum ieee80211_conf_flags - configuration flags
1478  * @IEEE80211_CONF_MONITOR: there's a monitor interface present -- use this
1482  *	This is the power save mode defined by IEEE 802.11-2007 section 11.2,
1505  * enum ieee80211_conf_changed - denotes which configuration changed
1509  * @IEEE80211_CONF_CHANGE_PS: the PS flag or dynamic PS timeout changed
1510  * @IEEE80211_CONF_CHANGE_POWER: the TX power changed
1530  * enum ieee80211_smps_mode - spatial multiplexing power save mode
1536  * @IEEE80211_SMPS_NUM_MODES: internal, don't use
1549  * struct ieee80211_conf - configuration of the device
1597  * struct ieee80211_channel_switch - holds the channel switch data
1602  * @timestamp: value in microseconds of the 64-bit Time Synchronization
1612  * @delay: maximum delay between the time the AP transmitted the last beacon in
1622 	u32 delay;  member
1626  * enum ieee80211_vif_flags - virtual interface flags
1631  *	monitoring on this virtual interface -- i.e. it can monitor
1634  * @IEEE80211_VIF_SUPPORTS_UAPSD: The device can do U-APSD for this
1651  * enum ieee80211_offload_flags - virtual interface offload flags
1653  * @IEEE80211_OFFLOAD_ENCAP_ENABLED: tx encapsulation offload is enabled
1656  * @IEEE80211_OFFLOAD_ENCAP_4ADDR: support 4-address mode encapsulation offload
1669  * struct ieee80211_vif - per-interface data
1679  *	interface, i.e. a GO or p2p-sta respectively
1681  *	write-protected by sdata_lock and local->mtx so holding either is fine
1683  * @mu_mimo_owner: indicates interface owns MU-MIMO capability
1694  * @cab_queue: content-after-beacon (DTIM beacon really) queue, AP mode only
1696  *	when it is not assigned. This pointer is RCU-protected due to the TX
1709  * @txq: the multicast data TX queue (if driver uses the TXQ abstraction)
1711  *	protected by fq->lock.
1712  * @offload_flags: 802.3 -> 802.11 enapsulation offload flags, see
1715  *	write-protected by sdata_lock and local->mtx so holding either is fine
1756 	return vif->type == NL80211_IFTYPE_MESH_POINT;  in ieee80211_vif_is_mesh()
1762  * wdev_to_ieee80211_vif - return a vif struct from a wdev
1775  * ieee80211_vif_to_wdev - return a wdev struct from a vif
1785  * enum ieee80211_key_flags - key flags
1813  *	RX, if your crypto engine can't deal with TX you can also set the
1824  * @IEEE80211_KEY_FLAG_NO_AUTO_TX: Key needs explicit Tx activation.
1844  * struct ieee80211_key_conf - key information
1853  * @tx_pn: PN used for TX keys, may be used by the driver as well if it
1856  * @keyidx: the key index (0-3)
1858  * @key: key material. For ALG_TKIP the key is encoded as a 256-bit (32 byte)
1860  * 	- Temporal Encryption Key (128 bits)
1861  * 	- Temporal Authenticator Tx MIC Key (64 bits)
1862  * 	- Temporal Authenticator Rx MIC Key (64 bits)
1884  * struct ieee80211_key_seq - key sequence counter
1895  * @hw: data for HW-only (e.g. cipher scheme) keys
1923  * struct ieee80211_cipher_scheme - cipher scheme
1953  * enum set_key_cmd - key command
1966  * enum ieee80211_sta_state - station state
1985  * enum ieee80211_sta_rx_bandwidth - station RX bandwidth
2003  * struct ieee80211_sta_rates - station rate selection table
2007  *	Overriding entries per-packet is possible by using cb tx control.
2021  * struct ieee80211_sta_txpwr - station txpower configuration
2025  * @power: indicates the tx power, in dBm, to be used when sending data frames
2027  * @type: In particular if TPC %type is NL80211_TX_POWER_LIMITED then tx power
2029  *	%type is NL80211_TX_POWER_AUTOMATIC then it indicates default tx power.
2039  * struct ieee80211_sta - station table entry
2042  * communicating with. Since stations are RCU-managed in
2078  *	A-MSDU. Taken from the Extended Capabilities element. 0 means
2080  * @support_p2p_ps: indicates whether the STA supports P2P PS mechanism or not.
2081  * @max_rc_amsdu_len: Maximum A-MSDU size in bytes recommended by rate control.
2082  * @max_tid_amsdu_len: Maximum A-MSDU size in bytes for this TID
2083  * @txpwr: the station tx power configuration
2084  * @txq: per-TID data TX queues (if driver uses the TXQ abstraction); note that
2085  *	the last entry (%IEEE80211_NUM_TIDS) is used for non-data frames
2110 	 * indicates the maximal length of an A-MSDU in bytes.
2115 	 *   A-MSDU maximal size is min(max_amsdu_len, 4065) bytes.
2116 	 * * If the skb is not part of a BA agreement, the A-MSDU maximal
2120 	 * driver. This is defined by the spec (IEEE 802.11-2012 section
2136  * enum sta_notify_cmd - sta notify command
2149  * struct ieee80211_tx_control - TX control data
2159  * struct ieee80211_txq - Software intermediate tx queue
2162  * @sta: station table entry, %NULL for per-vif queue
2163  * @tid: the TID for this queue (unused for per-vif queue),
2164  *	%IEEE80211_NUM_TIDS for non-data (if enabled)
2166  * @drv_priv: driver private area, sized by hw->txq_data_size
2182  * enum ieee80211_hw_flags - hardware flags
2193  *	should be instantiated, and the TX rate reported to userspace
2194  *	will be taken from the TX status instead of the rate control
2230  *	Hardware supports 11n A-MPDU aggregation.
2237  *	stack support for dynamic PS.
2240  *	Hardware has support for dynamic PS.
2246  *	Hardware can provide ack status reports of Tx frames to
2251  *	periodic keep-alives to the AP and probing the AP on beacon loss.
2258  *	per-station GTKs as used by IBSS RSN or during fast transition. If
2259  *	the device doesn't support per-station GTKs, but can be asked not
2265  *	autonomously manages the PS status of connected stations. When
2266  *	this flag is set mac80211 will not trigger PS mode for connected
2269  *	the PS mode of connected stations.
2271  * @IEEE80211_HW_TX_AMPDU_SETUP_IN_HW: The device handles TX A-MPDU session
2280  *	be created.  It is expected user-space will create vifs as
2284  *	crypto algorithms can be done in software - so don't automatically
2289  * @IEEE80211_HW_SUPPORT_FAST_XMIT: The driver/hardware supports fast-xmit,
2293  * @IEEE80211_HW_QUEUE_CONTROL: The driver wants to control per-interface
2312  * @IEEE80211_HW_CHANCTX_STA_CSA: Support 802.11h based channel-switch (CSA)
2318  *	or tailroom of TX skbs without copying them first.
2326  * @IEEE80211_HW_SUPPORTS_AMSDU_IN_AMPDU: The driver supports receiving A-MSDUs
2327  *	within A-MPDU.
2329  * @IEEE80211_HW_BEACON_TX_STATUS: The device/driver provides TX status
2343  *	which implies using per-CPU station statistics.
2346  *	A-MSDU frames. Requires software tx queueing and fast-xmit support.
2348  *	limit the maximum A-MSDU size based on the current tx rate by setting
2352  *	skbs, needed for zero-copy software A-MSDU.
2369  *	beacon was heard. This is required in multi-channel scenarios, where the
2375  *	support QoS NDP for AP probing - that's most likely a driver bug.
2383  *	but if the rate control is built-in then it must be set by the driver.
2386  * @IEEE80211_HW_STA_MMPDU_TXQ: use the extra non-TID per-station TXQ for all
2390  * @IEEE80211_HW_TX_STATUS_NO_AMPDU_LEN: Driver does not report accurate A-MPDU
2391  *	length in tx status information
2399  *	aggregating MPDUs with the same keyid, allowing mac80211 to keep Tx
2400  *	A-MPDU sessions active while rekeying with Extended Key ID.
2402  * @IEEE80211_HW_SUPPORTS_TX_ENCAP_OFFLOAD: Hardware supports tx encapsulation
2475  * struct ieee80211_hw - hardware information and state
2496  * @extra_beacon_tailroom: tailroom to reserve in each beacon tx skb.
2529  *	sub-frames) to be used for A-MPDU block ack receiver
2542  * @max_tx_fragments: maximum number of tx buffers per (A)-MSDU, sum
2543  *	of 1 + skb_shinfo(skb)->nr_frags for each skb in the frag_list.
2545  * @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX
2560  *	@units_pos member is set to a non-negative value then the timestamp
2566  * @radiotap_timestamp.accuracy: If non-negative, fills the accuracy in the
2574  *	for each access category if it is uAPSD trigger-enabled and delivery-
2577  *	that corresponding AC is both trigger- and delivery-enabled. '0' means
2641 	return test_bit(flg, hw->flags);  in _ieee80211_hw_check()
2648 	return __set_bit(flg, hw->flags);  in _ieee80211_hw_set()
2653  * struct ieee80211_scan_request - hw scan request
2666  * struct ieee80211_tdls_ch_sw_params - TDLS channel switch parameters
2668  * @sta: peer this TDLS channel-switch request/response came from
2669  * @chandef: channel referenced in a TDLS channel-switch request
2671  * @status: channel-switch response status
2673  * @switch_time: switch-timing parameter received in the frame
2674  * @switch_timeout: switch-timing parameter received in the frame
2675  * @tmpl_skb: TDLS switch-channel response template
2676  * @ch_sw_tm_ie: offset of the channel-switch timing IE inside @tmpl_skb
2691  * wiphy_to_ieee80211_hw - return a mac80211 driver hw struct from a wiphy
2697  * structure can then access it via hw->priv. Note that mac802111 drivers should
2706  * SET_IEEE80211_DEV - set device for 802.11 hardware
2713 	set_wiphy_dev(hw->wiphy, dev);  in SET_IEEE80211_DEV()
2717  * SET_IEEE80211_PERM_ADDR - set the permanent MAC address for 802.11 hardware
2724 	memcpy(hw->wiphy->perm_addr, addr, ETH_ALEN);  in SET_IEEE80211_PERM_ADDR()
2731 	if (WARN_ON_ONCE(c->control.rates[0].idx < 0))  in ieee80211_get_tx_rate()
2733 	return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[0].idx];  in ieee80211_get_tx_rate()
2740 	if (c->control.rts_cts_rate_idx < 0)  in ieee80211_get_rts_cts_rate()
2742 	return &hw->wiphy->bands[c->band]->bitrates[c->control.rts_cts_rate_idx];  in ieee80211_get_rts_cts_rate()
2749 	if (c->control.rates[idx + 1].idx < 0)  in ieee80211_get_alt_retry_rate()
2751 	return &hw->wiphy->bands[c->band]->bitrates[c->control.rates[idx + 1].idx];  in ieee80211_get_alt_retry_rate()
2755  * ieee80211_free_txskb - free TX skb
2778  * When transmitting, the TX control data will use the @hw_key_idx
2783  * the key is now in use, -%EOPNOTSUPP or -%ENOSPC if it couldn't be
2819  * when they are able to replace in-use PTK keys according to the following
2824       at the time of the key deletion (including re-transmits),
2847  * IEEE 802.11-2007 section 11.2 is enabled. This is not to be confused
2852  * When PS is enabled, hardware needs to wakeup for beacons and receive the
2865  * hardware stays awake for a user-specified period of time after sending a
2872  * PS based on traffic. Driver needs to only set %IEEE80211_HW_SUPPORTS_PS
2874  * hardware having support for the dynamic PS feature may set the
2876  * dynamic PS mode itself. The driver needs to look at the
2879  * dynamic PS feature in stack and will just keep %IEEE80211_CONF_PS
2882  * Driver informs U-APSD client support by enabling
2886  * utilize U-APSD, dynamic powersave is disabled for voip AC and all frames
2889  * Note: U-APSD client mode is not yet supported with
2920  *  - a list of information element IDs
2921  *  - a list of OUIs for the vendor information element
2935  * the various vendor-assigned IEs with unknown contents (128, 129, 133-136,
2959  * and rationale, please refer to 802.11 (as amended by 802.11n-2009)
3023  * client powersaving, both "legacy" PS (PS-Poll/null data) and uAPSD.
3027  * will not poll with PS-Poll and trigger with uAPSD at the same time.
3038  * handle PS-Poll/uAPSD.
3052  * it can PS-Poll, or it can possibly start a uAPSD service period.
3055  * the station sends a PS-Poll or a uAPSD trigger frame, mac80211
3060  * response to a PS-Poll) also has %IEEE80211_TX_STATUS_EOSP set to
3062  * TX status report it also sets %IEEE80211_TX_CTL_REQ_TX_STATUS.
3063  * When TX status is reported for this frame, the service period is
3066  * Additionally, non-bufferable MMPDUs can also be transmitted by
3074  * transmitted to a certain station is out-of-band communication to
3092  * there is more data on other TIDs -- the TIDs to release frames
3097  * shorten service periods (or abort PS-Poll responses), it must
3099  * are buffered in the driver -- those must remain buffered to avoid
3110  * Note that if the driver ever buffers frames other than QoS-data
3111  * frames, it must take care to never send a non-QoS-data frame as
3112  * the last frame in a service period, adding a QoS-nulldata frame
3113  * after a non-QoS-data frame if needed.
3120  * assignment of per-interface AC software queues to hardware queues. This
3122  * 1) off-channel transmissions might get stuck behind other frames
3124  * 3) after-DTIM frames could get stuck behind other frames
3148  * after-DTIM queue for AP:   8
3149  * off-channel queue:         9
3160  * and the second virtual interface with 4-7.
3172  * enum ieee80211_filter_flags - hardware filter flags
3195  * @FIF_CONTROL: pass control frames (except for PS Poll) addressed to this
3200  * @FIF_PSPOLL: pass PS Poll frames
3219  * enum ieee80211_ampdu_mlme_action - A-MPDU actions
3224  * Note that drivers MUST be able to deal with a TX aggregation
3231  * @IEEE80211_AMPDU_TX_START: start TX aggregation, the driver must either
3234  *	%IEEE80211_AMPDU_TX_START_DELAY_ADDBA to delay addba after
3237  * @IEEE80211_AMPDU_TX_OPERATIONAL: TX aggregation has become operational
3238  * @IEEE80211_AMPDU_TX_STOP_CONT: stop TX aggregation but continue transmitting
3241  * @IEEE80211_AMPDU_TX_STOP_FLUSH: stop TX aggregation and flush all packets,
3245  * @IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: called when TX aggregation is stopped
3264  * struct ieee80211_ampdu_params - AMPDU action parameters
3269  * @ssn: start sequence number of the session. TX/RX_STOP can pass 0. When
3275  * @amsdu: indicates the peer's ability to receive A-MSDU within A-MPDU.
3291  * enum ieee80211_frame_release_type - frame release reason
3292  * @IEEE80211_FRAME_RELEASE_PSPOLL: frame released for PS-Poll
3294  *	frame received on trigger-enabled AC
3302  * enum ieee80211_rate_control_changed - flags to indicate what changed
3306  *	information -- for HT20/40 the IEEE80211_HT_CAP_SUP_WIDTH_20_40
3323  * enum ieee80211_roc_type - remain on channel type
3341  * enum ieee80211_reconfig_type - reconfig type
3357  * struct ieee80211_prep_tx_info - prepare TX information
3358  * @duration: if non-zero, hint about the required duration,
3372  * struct ieee80211_ops - callbacks from mac80211 to the driver
3378  * @tx: Handler that 802.11 module calls for each transmitted frame.
3380  *	The low-level driver should send the frame out based on
3381  *	configuration in the TX control data. This handler should,
3391  *	to avoid acknowledging frames before a non-monitor device
3500  *	offloading. The index can be 0-3, or -1 for unsetting it.
3509  *	at all but just send them after the SSID -- mac80211 includes the
3521  * @cancel_hw_scan: Ask the low-level tp cancel the active hw scan.
3526  *	scan_work after the low-level driver was already suspended.
3548  * @get_stats: Return low-level statistics.
3586  * @sta_set_txpwr: Configure the station tx power. This callback set the tx
3595  *	isn't safe to use the pointer, not even RCU protected - no RCU grace
3620  *	let the driver pre-fill the statistics. The driver can fill most of
3622  *	all of them make sense - see the source for which ones are possible.
3626  * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
3627  *	bursting) for a hardware TX queue.
3642  *	firmware/hardware.  Preferred to set_tsf as it avoids delay between
3644  *	as TSF delay. Is not a required function.
3656  *	Returns non-zero if this device sent the last beacon.
3659  * @get_survey: Return per-channel survey information
3662  *	need to set wiphy->rfkill_poll to %true before registration,
3667  *	in IEEE 802.11-2007 section 17.3.8.6 and modify ACK timeout
3668  *	accordingly; coverage class equals to -1 to enable ACK timeout
3690  *	Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may
3691  *	reject TX/RX mask combinations they cannot support by returning -EINVAL
3696  * @remain_on_channel: Starts an off-channel period on the given channel, must
3699  *	offload. Frames to transmit on the off-channel channel are transmitted
3701  *	duration (which will always be non-zero) expires, the driver must call
3706  * @cancel_remain_on_channel: Requests that an ongoing off-channel period is
3709  * @set_ringparam: Set tx and rx ring sizes.
3711  * @get_ringparam: Get tx and rx ring current and maximum sizes.
3726  *	to release some frames, either for PS-poll or uAPSD.
3729  *	the frames being released then it must still set the more-data bit in
3731  *	more-data bit must always be set.
3733  *	from, for PS-poll it will always have only a single bit set.
3734  *	In the case this is used for a PS-poll initiated release, the
3737  *	on the TX status (and must report TX status) so that the PS-poll
3739  *	responses for a retried PS-poll frame.
3750  *	via the usual TX path after this call. The TX information for frames
3762  * @get_et_sset_count:  Ethtool API to get string-set count.
3767  *	and perhaps other supported types of ethtool data-sets.
3770  *	before associated. In multi-channel scenarios, a virtual interface is
3792  *	a TDLS discovery-request, we expect a reply to arrive on the AP's
3794  *	setup-response is a direct packet not buffered by the AP.
3796  *	discovery-request. The recommended period of protection is at least
3850  *	gets a CSA or a userspace initiated channel-switch), allowing
3870  * @get_txpower: get current maximum tx power (in dBm) based on configuration
3873  * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver
3874  *	is responsible for continually initiating channel-switching operations
3876  *	driver receives a channel-switch request template and the location of
3877  *	the switch-timing IE within the template as part of the invocation.
3879  *	optionally copy the skb for further re-use.
3880  * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both
3882  * @tdls_recv_channel_switch: a TDLS channel-switch related frame (request or
3885  *	an ongoing channel-switch operation. In addition, a channel-switch
3887  *	switch-timing IE within the template. The skb can only be used within
3911  *	aggregating two specific frames in the same A-MSDU. The relation
3913  *	skb is always a real frame, head may or may not be an A-MSDU.
3925  *	4-address mode
3926  * @set_sar_specs: Update the SAR (TX power) settings.
3938 	void (*tx)(struct ieee80211_hw *hw,  member
4057 	 * Perform a certain A-MPDU action.
4067 	 * - ``TX: 1.....7``
4068 	 * - ``RX:  2....7`` (lost frame #1)
4069 	 * - ``TX:        8..1...``
4071 	 * which is invalid since #1 was now re-transmitted well past the
4074 	 * - ``TX:        1   or``
4075 	 * - ``TX:        18  or``
4076 	 * - ``TX:        81``
4115 	int (*set_ringparam)(struct ieee80211_hw *hw, u32 tx, u32 rx);
4117 			      u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max);
4267  * ieee80211_alloc_hw_nm - Allocate a new hardware device
4287  * ieee80211_alloc_hw - Allocate a new hardware device
4308  * ieee80211_register_hw - Register hardware device
4321  * struct ieee80211_tpt_blink - throughput blink description
4332  * enum ieee80211_tpt_led_trigger_flags - throughput trigger flags
4356  * ieee80211_get_tx_led_name - get name of TX LED
4377  * ieee80211_get_rx_led_name - get name of RX LED
4398  * ieee80211_get_assoc_led_name - get name of association LED
4419  * ieee80211_get_radio_led_name - get name of radio LED
4440  * ieee80211_create_tpt_led_trigger - create throughput LED trigger
4443  * @blink_table: the blink table -- needs to be ordered by throughput
4465  * ieee80211_unregister_hw - Unregister a hardware device
4475  * ieee80211_free_hw - free hardware descriptor
4486  * ieee80211_restart_hw - restart hardware completely
4492  * calling the ->start() operation. The driver will need to reset all
4493  * internal state that it has prior to calling this function.
4500  * ieee80211_rx_list - receive frame and store processed skbs in a list
4525  * ieee80211_rx_napi - receive frame from NAPI context
4550  * ieee80211_rx - receive frame
4575  * ieee80211_rx_irqsafe - receive frame
4590  * ieee80211_rx_ni - receive frame (in process context)
4611  * ieee80211_sta_ps_transition - PS transition for connected sta
4615  * entering/leaving PS mode.
4623  * @start: start or stop PS
4625  * Return: 0 on success. -EINVAL when the requested PS mode is already set.
4630  * ieee80211_sta_ps_transition_ni - PS transition for connected sta
4638  * @start: start or stop PS
4655  * ieee80211_sta_pspoll - PS-Poll frame received
4659  * use this function to inform mac80211 that a PS-Poll frame from a
4668  * ieee80211_sta_uapsd_trigger - (potential) U-APSD trigger frame received
4686  * The TX headroom reserved by mac80211 for its own tx_status functions.
4692  * ieee80211_sta_set_buffered - inform mac80211 about driver-buffered frames
4706  * If all frames are released to the station (due to PS-poll or uAPSD)
4723  * ieee80211_get_tx_rates - get the selected transmit rates for a packet
4725  * Call this function in a driver with per-packet rate selection support
4726  * to combine the rate info in the packet tx info with the most recent
4742  * ieee80211_sta_set_expected_throughput - set the expected tpt for a station
4758  * ieee80211_tx_rate_update - transmit rate update callback
4760  * Drivers should call this functions with a non-NULL pub sta
4762  * in updating the tx rate in data path.
4765  * @pubsta: the station to update the tx rate for.
4766  * @info: tx status information
4773  * ieee80211_tx_status - transmit status callback
4792  * ieee80211_tx_status_ext - extended transmit status callback
4803  * @status: tx status information
4809  * ieee80211_tx_status_noskb - transmit status callback without skb
4812  * in drivers that cannot reliably map tx status information back to
4822  * @info: tx status information
4837  * ieee80211_tx_status_ni - transmit status callback (in process context)
4857  * ieee80211_tx_status_irqsafe - IRQ-safe transmit status callback
4872  * ieee80211_tx_status_8023 - transmit status callback for 802.3 frame format
4881  * calls in the same tx status family.
4892  * ieee80211_report_low_ack - report non-responding station
4894  * When operating in AP-mode, call this function to report a non-responding
4897  * @sta: the non-responding connected sta
4905  * struct ieee80211_mutable_offsets - mutable beacon offsets
4920  * ieee80211_beacon_get_template - beacon template generation function
4944  * ieee80211_beacon_get_tim - beacon generation function
4948  *	Set to 0 if invalid (in non-AP modes).
4951  *	Set to 0 if invalid (in non-AP modes).
4958  * frame from mac80211 -- it is responsible for calling this function exactly
4970  * ieee80211_beacon_get - beacon generation function
4985  * ieee80211_beacon_update_cntdwn - request mac80211 to decrement the beacon countdown
4999  * ieee80211_beacon_set_cntdwn - request mac80211 to set beacon countdown
5012  * ieee80211_csa_finish - notify mac80211 about channel switch
5022  * ieee80211_beacon_cntdwn_is_complete - find out if countdown reached 1
5030  * ieee80211_color_change_finish - notify mac80211 about color change
5040  * ieee80211_proberesp_get - retrieve a Probe Response template
5055  * ieee80211_pspoll_get - retrieve a PS Poll template
5059  * Creates a PS Poll a template which can, for example, uploaded to
5066  * Return: The PS Poll template. %NULL on error.
5072  * ieee80211_nullfunc_get - retrieve a nullfunc template
5095  * ieee80211_probereq_get - retrieve a Probe Request template
5113  * ieee80211_rts_get - RTS frame generation function
5122  * hardware/firmware), the low-level driver uses this function to receive
5123  * the next RTS frame from the 802.11 code. The low-level is responsible
5132  * ieee80211_rts_duration - Get the duration field for an RTS frame
5139  * the duration field, the low-level driver uses this function to receive
5140  * the duration field value in little-endian byteorder.
5149  * ieee80211_ctstoself_get - CTS-to-self frame generation function
5152  * @frame: pointer to the frame that is going to be protected by the CTS-to-self.
5155  * @cts: The buffer where to store the CTS-to-self frame.
5157  * If the CTS-to-self frames are generated by the host system (i.e., not in
5158  * hardware/firmware), the low-level driver uses this function to receive
5159  * the next CTS-to-self frame from the 802.11 code. The low-level is responsible
5160  * for calling this function before and CTS-to-self frame is needed.
5169  * ieee80211_ctstoself_duration - Get the duration field for a CTS-to-self frame
5172  * @frame_len: the length of the frame that is going to be protected by the CTS-to-self.
5175  * If the CTS-to-self is generated in firmware, but the host system must provide
5176  * the duration field, the low-level driver uses this function to receive
5177  * the duration field value in little-endian byteorder.
5187  * ieee80211_generic_frame_duration - Calculate the duration field for a frame
5206  * ieee80211_get_buffered_bc - accessing buffered broadcast and multicast frames
5213  * memory. The low-level driver uses this function to fetch next buffered
5220  * generated with ieee80211_beacon_get() and the low-level driver must thus
5222  * NULL if the previous generated beacon was not DTIM, so the low-level driver
5230  * ieee80211_get_tkip_p1k_iv - get a TKIP phase 1 key for IV32
5242  * ieee80211_get_tkip_p1k - get a TKIP phase 1 key
5255 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;  in ieee80211_get_tkip_p1k()
5256 	const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control);  in ieee80211_get_tkip_p1k()
5263  * ieee80211_get_tkip_rx_p1k - get a TKIP phase 1 key for RX
5277  * ieee80211_get_tkip_p2k - get a TKIP phase 2 key
5291  * ieee80211_tkip_add_iv - write TKIP IV and Ext. IV to pos
5306  * ieee80211_get_key_rx_seq - get key RX sequence counter
5309  * @tid: The TID, or -1 for the management frame value (CCMP/GCMP only);
5310  *	the value on TID 0 is also used for non-QoS frames. For
5325  * ieee80211_set_key_rx_seq - set key RX sequence counter
5328  * @tid: The TID, or -1 for the management frame value (CCMP/GCMP only);
5329  *	the value on TID 0 is also used for non-QoS frames. For
5345  * ieee80211_remove_key - remove the given key
5358  * ieee80211_gtk_rekey_add - add a GTK key from rekeying during WoWLAN
5368  * mac80211-owned memory. In case of errors, the function returns an
5372  * acceleration, so no TX will be done with the key. Since it's a GTK
5391  * ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying
5401  * ieee80211_key_mic_failure - increment MIC failure counter for the key
5411  * ieee80211_key_replay - increment replay counter for the key
5421  * ieee80211_wake_queue - wake specific queue
5430  * ieee80211_stop_queue - stop specific queue
5439  * ieee80211_queue_stopped - test status of the queue
5451  * ieee80211_stop_queues - stop all queues
5459  * ieee80211_wake_queues - wake all queues
5467  * ieee80211_scan_completed - completed hardware scan
5481  * ieee80211_sched_scan_results - got results from scheduled scan
5491  * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped
5503  * enum ieee80211_interface_iteration_flags - interface iteration flags
5508  *	haven't been re-added to the driver yet.
5510  *	interfaces, even if they haven't been re-added to the driver yet.
5524  * ieee80211_iterate_interfaces - iterate interfaces
5542  * ieee80211_iterate_active_interfaces - iterate active interfaces
5568  * ieee80211_iterate_active_interfaces_atomic - iterate active interfaces
5589  * ieee80211_iterate_active_interfaces_mtx - iterate active interfaces
5608  * ieee80211_iterate_stations_atomic - iterate stations
5624  * ieee80211_queue_work - add work onto the mac80211 workqueue
5635  * ieee80211_queue_delayed_work - add work onto the mac80211 workqueue
5642  * @delay: number of jiffies to wait before queueing
5646 				  unsigned long delay);
5649  * ieee80211_start_tx_ba_session - Start a tx Block Ack session.
5664  * ieee80211_start_tx_ba_cb_irqsafe - low level driver ready to aggregate.
5677  * ieee80211_stop_tx_ba_session - Stop a Block Ack session.
5690  * ieee80211_stop_tx_ba_cb_irqsafe - low level driver ready to stop aggregate.
5703  * ieee80211_find_sta - find a station
5717  * ieee80211_find_sta_by_ifaddr - find a station on hardware
5721  * @localaddr: local address (vif->sdata->vif.addr). Use NULL for 'any'.
5743  * ieee80211_sta_block_awake - block station from waking up
5754  * This function allows implementing this mode in a race-free
5764  * cause mac80211 to be able to send ps-poll responses, and if
5775  * ieee80211_sta_eosp - notify mac80211 about end of SP
5779  * mac80211 in the TX status about the EOSP, it must clear the
5781  * This applies for PS-Poll as well as uAPSD.
5784  * not mix calls to irqsafe/non-irqsafe versions, this function
5786  * all non-irqsafe, don't mix!
5796  * ieee80211_send_eosp_nullfunc - ask mac80211 to send NDP with EOSP
5809  * will be sent despite the station being in power-save.
5818  * ieee80211_sta_register_airtime - register airtime usage for a sta/tid
5834  * TX and RX airtime can be reported together, or separately by setting one of
5839  * @tx_airtime: airtime used during TX (in usec)
5846  * ieee80211_txq_airtime_check - check if a txq can send frame to device
5858  * ieee80211_iter_keys - iterate keys programmed into the device
5885  * ieee80211_iter_keys_rcu - iterate keys programmed into the device
5909  * ieee80211_iter_chan_contexts_atomic - iterate channel contexts
5924  * found while iterating, whether they've been re-added already
5935  * ieee80211_ap_probereq_get - retrieve a Probe Request template
5952  * ieee80211_beacon_loss - inform hardware does not receive beacons
5963  * ieee80211_connection_loss - inform hardware has lost connection to the AP
5979  * ieee80211_disconnect - request disconnection
5990  * ieee80211_resume_disconnect - disconnect from AP after resume
6013  * ieee80211_cqm_rssi_notify - inform a configured connection quality monitoring
6031  * ieee80211_cqm_beacon_loss_notify - inform CQM of beacon loss
6039  * ieee80211_radar_detected - inform that a radar was detected
6046  * ieee80211_chswitch_done - Complete channel switch process
6050  * Complete the channel switch post-process: set the new operational channel
6056  * ieee80211_request_smps - request SM PS transition
6058  * @smps_mode: new SM PS mode
6060  * This allows the driver to request an SM PS transition in managed
6068  * ieee80211_ready_on_channel - notification of remain-on-channel start
6074  * ieee80211_remain_on_channel_expired - remain_on_channel duration expired
6080  * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions
6087  * therefore prevent the peer device to use a-mpdu aggregation.
6097  * ieee80211_mark_rx_ba_filtered_frames - move RX BA window and mark filtered
6115  * ieee80211_send_bar - send a BlockAckReq frame
6128  * ieee80211_manage_rx_ba_offl - helper to queue an RX BA work
6137  * ieee80211_start_rx_ba_session_offl - start a Rx BA session
6159  * ieee80211_stop_rx_ba_session_offl - stop a Rx BA session
6181  * ieee80211_rx_ba_timer_expired - stop a Rx BA session due to timeout
6198  * struct ieee80211_tx_rate_control - rate control information for/from RC algo
6210  * @short_preamble: whether mac80211 will request short-preamble transmission
6212  * @rate_idx_mask: user-requested (legacy) rate mask
6213  * @rate_idx_mcs_mask: user-requested MCS rate mask (NULL if not in use)
6229  * enum rate_control_capabilities - rate control capabilities
6236 	 * that the AP uses is < the number of TX chains the hardware has,
6242 	 * mac80211 should start A-MPDU sessions on tx
6285 	return (sta == NULL || sta->supp_rates[band] & BIT(index));  in rate_supported()
6294 	for (i = 0; i < sband->n_bitrates; i++)  in rate_lowest_index()
6295 		if (rate_supported(sta, sband->band, i))  in rate_lowest_index()
6311 	for (i = 0; i < sband->n_bitrates; i++)  in rate_usable_index_exists()
6312 		if (rate_supported(sta, sband->band, i))  in rate_usable_index_exists()
6318  * rate_control_set_rates - pass the sta rate selection to mac80211/driver
6327  * @rates: new tx rate set to be used for this station.
6339 	return conf->chandef.width == NL80211_CHAN_WIDTH_20;  in conf_is_ht20()
6345 	return conf->chandef.width == NL80211_CHAN_WIDTH_40 &&  in conf_is_ht40_minus()
6346 	       conf->chandef.center_freq1 < conf->chandef.chan->center_freq;  in conf_is_ht40_minus()
6352 	return conf->chandef.width == NL80211_CHAN_WIDTH_40 &&  in conf_is_ht40_plus()
6353 	       conf->chandef.center_freq1 > conf->chandef.chan->center_freq;  in conf_is_ht40_plus()
6359 	return conf->chandef.width == NL80211_CHAN_WIDTH_40;  in conf_is_ht40()
6365 	return (conf->chandef.width != NL80211_CHAN_WIDTH_5) &&  in conf_is_ht()
6366 		(conf->chandef.width != NL80211_CHAN_WIDTH_10) &&  in conf_is_ht()
6367 		(conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT);  in conf_is_ht()
6389 	return ieee80211_iftype_p2p(vif->type, vif->p2p);  in ieee80211_vif_type_p2p()
6393  * ieee80211_update_mu_groups - set the VHT MU-MIMO groud data
6396  * @membership: 64 bits array - a bit is set if station is member of the group
6414  * ieee80211_ave_rssi - report the average RSSI for the specified interface
6426  * ieee80211_report_wowlan_wakeup - report WoWLAN wakeup
6438  * ieee80211_tx_prepare_skb - prepare an 802.11 skb for transmission
6452  * ieee80211_parse_tx_radiotap - Sanity-check and parse the radiotap header
6466  * struct ieee80211_noa_data - holds temporary data for tracking P2P NoA state
6493  * ieee80211_parse_p2p_noa - initialize NoA tracking data from P2P IE
6505  * ieee80211_update_p2p_noa - get next pending P2P GO absent state change
6513  * ieee80211_tdls_oper_request - request userspace to perform a TDLS operation
6527  * ieee80211_reserve_tid - request to reserve a specific TID
6548  * ieee80211_unreserve_tid - request to unreserve a specific TID
6564  * ieee80211_tx_dequeue - dequeue a packet from a software tx queue
6574  * skb->cb, e.g. the key pointer, are protected by RCU and thus the
6587  * ieee80211_tx_dequeue_ni - dequeue a packet from a software tx queue
6610  * ieee80211_next_txq - get next tx queue to pull packets from
6622  * ieee80211_txq_schedule_start - start new scheduling round for TXQs
6638  * ieee80211_schedule_txq - schedule a TXQ for transmission
6652  * ieee80211_return_txq - return a TXQ previously acquired by ieee80211_next_txq()
6665  * ieee80211_txq_may_transmit - check whether TXQ is allowed to transmit
6679  * aligned against driver's own round-robin scheduler list. i.e it rotates
6692  * ieee80211_txq_get_depth - get pending frame/byte count of given txq
6695  * txq state can change half-way of this function and the caller may end up
6696  * with "new" frame_cnt and "old" byte_cnt or vice-versa.
6707  * ieee80211_nan_func_terminated - notify about NAN function termination.
6723  * ieee80211_nan_func_match - notify about NAN function match event.
6738  * ieee80211_calc_rx_airtime - calculate estimated transmission airtime for RX.
6753  * ieee80211_calc_tx_airtime - calculate estimated transmission airtime for TX.
6756  * rate information in the TX info struct and the frame length.
6766  * ieee80211_set_hw_80211_encap - enable hardware encapsulation offloading.
6778  * ieee80211_get_fils_discovery_tmpl - Get FILS discovery template.
6790  * ieee80211_get_unsol_bcast_probe_resp_tmpl - Get unsolicited broadcast
6804  * ieeee80211_obss_color_collision_notify - notify userland about a BSS color
6816  * ieee80211_is_tx_data - check if frame is a data frame
6826 	struct ieee80211_hdr *hdr = (void *) skb->data;  in ieee80211_is_tx_data()
6828 	return info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP ||  in ieee80211_is_tx_data()
6829 	       ieee80211_is_data(hdr->frame_control);  in ieee80211_is_tx_data()