Initial import

1 files changed, 2074 insertions, 0 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
new file mode 100644
index 000000000..c0a9187bc
--- /dev/null
+++ b/net/mac80211/ieee80211_i.h
@@ -0,0 +1,2074 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007-2010	Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014  Intel Mobile Communications GmbH
+ *
+ * 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 IEEE80211_I_H
+#define IEEE80211_I_H
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/if_ether.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/workqueue.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/etherdevice.h>
+#include <linux/leds.h>
+#include <linux/idr.h>
+#include <linux/rhashtable.h>
+#include <net/ieee80211_radiotap.h>
+#include <net/cfg80211.h>
+#include <net/mac80211.h>
+#include "key.h"
+#include "sta_info.h"
+#include "debug.h"
+
+struct ieee80211_local;
+
+/* Maximum number of broadcast/multicast frames to buffer when some of the
+ * associated stations are using power saving. */
+#define AP_MAX_BC_BUFFER 128
+
+/* Maximum number of frames buffered to all STAs, including multicast frames.
+ * Note: increasing this limit increases the potential memory requirement. Each
+ * frame can be up to about 2 kB long. */
+#define TOTAL_MAX_TX_BUFFER 512
+
+/* Required encryption head and tailroom */
+#define IEEE80211_ENCRYPT_HEADROOM 8
+#define IEEE80211_ENCRYPT_TAILROOM 18
+
+/* IEEE 802.11 (Ch. 9.5 Defragmentation) requires support for concurrent
+ * reception of at least three fragmented frames. This limit can be increased
+ * by changing this define, at the cost of slower frame reassembly and
+ * increased memory use (about 2 kB of RAM per entry). */
+#define IEEE80211_FRAGMENT_MAX 4
+
+/* power level hasn't been configured (or set to automatic) */
+#define IEEE80211_UNSET_POWER_LEVEL	INT_MIN
+
+/*
+ * Some APs experience problems when working with U-APSD. Decreasing the
+ * probability of that happening by using legacy mode for all ACs but VO isn't
+ * enough.
+ *
+ * Cisco 4410N originally forced us to enable VO by default only because it
+ * treated non-VO ACs as legacy.
+ *
+ * However some APs (notably Netgear R7000) silently reclassify packets to
+ * different ACs. Since u-APSD ACs require trigger frames for frame retrieval
+ * clients would never see some frames (e.g. ARP responses) or would fetch them
+ * accidentally after a long time.
+ *
+ * It makes little sense to enable u-APSD queues by default because it needs
+ * userspace applications to be aware of it to actually take advantage of the
+ * possible additional powersavings. Implicitly depending on driver autotrigger
+ * frame support doesn't make much sense.
+ */
+#define IEEE80211_DEFAULT_UAPSD_QUEUES 0
+
+#define IEEE80211_DEFAULT_MAX_SP_LEN		\
+	IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL
+
+#define IEEE80211_DEAUTH_FRAME_LEN	(24 /* hdr */ + 2 /* reason */)
+
+struct ieee80211_fragment_entry {
+	unsigned long first_frag_time;
+	unsigned int seq;
+	unsigned int rx_queue;
+	unsigned int last_frag;
+	unsigned int extra_len;
+	struct sk_buff_head skb_list;
+	int ccmp; /* Whether fragments were encrypted with CCMP */
+	u8 last_pn[6]; /* PN of the last fragment if CCMP was used */
+};
+
+
+struct ieee80211_bss {
+	u32 device_ts_beacon, device_ts_presp;
+
+	bool wmm_used;
+	bool uapsd_supported;
+
+#define IEEE80211_MAX_SUPP_RATES 32
+	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
+	size_t supp_rates_len;
+	struct ieee80211_rate *beacon_rate;
+
+	/*
+	 * During association, we save an ERP value from a probe response so
+	 * that we can feed ERP info to the driver when handling the
+	 * association completes. these fields probably won't be up-to-date
+	 * otherwise, you probably don't want to use them.
+	 */
+	bool has_erp_value;
+	u8 erp_value;
+
+	/* Keep track of the corruption of the last beacon/probe response. */
+	u8 corrupt_data;
+
+	/* Keep track of what bits of information we have valid info for. */
+	u8 valid_data;
+};
+
+/**
+ * enum ieee80211_corrupt_data_flags - BSS data corruption flags
+ * @IEEE80211_BSS_CORRUPT_BEACON: last beacon frame received was corrupted
+ * @IEEE80211_BSS_CORRUPT_PROBE_RESP: last probe response received was corrupted
+ *
+ * These are bss flags that are attached to a bss in the
+ * @corrupt_data field of &struct ieee80211_bss.
+ */
+enum ieee80211_bss_corrupt_data_flags {
+	IEEE80211_BSS_CORRUPT_BEACON		= BIT(0),
+	IEEE80211_BSS_CORRUPT_PROBE_RESP	= BIT(1)
+};
+
+/**
+ * enum ieee80211_valid_data_flags - BSS valid data flags
+ * @IEEE80211_BSS_VALID_WMM: WMM/UAPSD data was gathered from non-corrupt IE
+ * @IEEE80211_BSS_VALID_RATES: Supported rates were gathered from non-corrupt IE
+ * @IEEE80211_BSS_VALID_ERP: ERP flag was gathered from non-corrupt IE
+ *
+ * These are bss flags that are attached to a bss in the
+ * @valid_data field of &struct ieee80211_bss.  They show which parts
+ * of the data structure were received as a result of an un-corrupted
+ * beacon/probe response.
+ */
+enum ieee80211_bss_valid_data_flags {
+	IEEE80211_BSS_VALID_WMM			= BIT(1),
+	IEEE80211_BSS_VALID_RATES		= BIT(2),
+	IEEE80211_BSS_VALID_ERP			= BIT(3)
+};
+
+typedef unsigned __bitwise__ ieee80211_tx_result;
+#define TX_CONTINUE	((__force ieee80211_tx_result) 0u)
+#define TX_DROP		((__force ieee80211_tx_result) 1u)
+#define TX_QUEUED	((__force ieee80211_tx_result) 2u)
+
+#define IEEE80211_TX_UNICAST		BIT(1)
+#define IEEE80211_TX_PS_BUFFERED	BIT(2)
+
+struct ieee80211_tx_data {
+	struct sk_buff *skb;
+	struct sk_buff_head skbs;
+	struct ieee80211_local *local;
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+	struct ieee80211_key *key;
+	struct ieee80211_tx_rate rate;
+
+	unsigned int flags;
+};
+
+
+typedef unsigned __bitwise__ ieee80211_rx_result;
+#define RX_CONTINUE		((__force ieee80211_rx_result) 0u)
+#define RX_DROP_UNUSABLE	((__force ieee80211_rx_result) 1u)
+#define RX_DROP_MONITOR		((__force ieee80211_rx_result) 2u)
+#define RX_QUEUED		((__force ieee80211_rx_result) 3u)
+
+/**
+ * enum ieee80211_packet_rx_flags - packet RX flags
+ * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
+ *	(incl. multicast frames)
+ * @IEEE80211_RX_FRAGMENTED: fragmented frame
+ * @IEEE80211_RX_AMSDU: a-MSDU packet
+ * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
+ * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
+ *
+ * These are per-frame flags that are attached to a frame in the
+ * @rx_flags field of &struct ieee80211_rx_status.
+ */
+enum ieee80211_packet_rx_flags {
+	IEEE80211_RX_RA_MATCH			= BIT(1),
+	IEEE80211_RX_FRAGMENTED			= BIT(2),
+	IEEE80211_RX_AMSDU			= BIT(3),
+	IEEE80211_RX_MALFORMED_ACTION_FRM	= BIT(4),
+	IEEE80211_RX_DEFERRED_RELEASE		= BIT(5),
+};
+
+/**
+ * enum ieee80211_rx_flags - RX data flags
+ *
+ * @IEEE80211_RX_CMNTR: received on cooked monitor already
+ * @IEEE80211_RX_BEACON_REPORTED: This frame was already reported
+ *	to cfg80211_report_obss_beacon().
+ * @IEEE80211_RX_REORDER_TIMER: this frame is released by the
+ *	reorder buffer timeout timer, not the normal RX path
+ *
+ * These flags are used across handling multiple interfaces
+ * for a single frame.
+ */
+enum ieee80211_rx_flags {
+	IEEE80211_RX_CMNTR		= BIT(0),
+	IEEE80211_RX_BEACON_REPORTED	= BIT(1),
+	IEEE80211_RX_REORDER_TIMER	= BIT(2),
+};
+
+struct ieee80211_rx_data {
+	struct sk_buff *skb;
+	struct ieee80211_local *local;
+	struct ieee80211_sub_if_data *sdata;
+	struct sta_info *sta;
+	struct ieee80211_key *key;
+
+	unsigned int flags;
+
+	/*
+	 * Index into sequence numbers array, 0..16
+	 * since the last (16) is used for non-QoS,
+	 * will be 16 on non-QoS frames.
+	 */
+	int seqno_idx;
+
+	/*
+	 * Index into the security IV/PN arrays, 0..16
+	 * since the last (16) is used for CCMP-encrypted
+	 * management frames, will be set to 16 on mgmt
+	 * frames and 0 on non-QoS frames.
+	 */
+	int security_idx;
+
+	u32 tkip_iv32;
+	u16 tkip_iv16;
+};
+
+struct ieee80211_csa_settings {
+	const u16 *counter_offsets_beacon;
+	const u16 *counter_offsets_presp;
+
+	int n_counter_offsets_beacon;
+	int n_counter_offsets_presp;
+
+	u8 count;
+};
+
+struct beacon_data {
+	u8 *head, *tail;
+	int head_len, tail_len;
+	struct ieee80211_meshconf_ie *meshconf;
+	u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
+	u8 csa_current_counter;
+	struct rcu_head rcu_head;
+};
+
+struct probe_resp {
+	struct rcu_head rcu_head;
+	int len;
+	u16 csa_counter_offsets[IEEE80211_MAX_CSA_COUNTERS_NUM];
+	u8 data[0];
+};
+
+struct ps_data {
+	/* yes, this looks ugly, but guarantees that we can later use
+	 * bitmap_empty :)
+	 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
+	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)]
+			__aligned(__alignof__(unsigned long));
+	struct sk_buff_head bc_buf;
+	atomic_t num_sta_ps; /* number of stations in PS mode */
+	int dtim_count;
+	bool dtim_bc_mc;
+};
+
+struct ieee80211_if_ap {
+	struct beacon_data __rcu *beacon;
+	struct probe_resp __rcu *probe_resp;
+
+	/* to be used after channel switch. */
+	struct cfg80211_beacon_data *next_beacon;
+	struct list_head vlans; /* write-protected with RTNL and local->mtx */
+
+	struct ps_data ps;
+	atomic_t num_mcast_sta; /* number of stations receiving multicast */
+	enum ieee80211_smps_mode req_smps, /* requested smps mode */
+			 driver_smps_mode; /* smps mode request */
+
+	struct work_struct request_smps_work;
+};
+
+struct ieee80211_if_wds {
+	struct sta_info *sta;
+	u8 remote_addr[ETH_ALEN];
+};
+
+struct ieee80211_if_vlan {
+	struct list_head list; /* write-protected with RTNL and local->mtx */
+
+	/* used for all tx if the VLAN is configured to 4-addr mode */
+	struct sta_info __rcu *sta;
+};
+
+struct mesh_stats {
+	__u32 fwded_mcast;		/* Mesh forwarded multicast frames */
+	__u32 fwded_unicast;		/* Mesh forwarded unicast frames */
+	__u32 fwded_frames;		/* Mesh total forwarded frames */
+	__u32 dropped_frames_ttl;	/* Not transmitted since mesh_ttl == 0*/
+	__u32 dropped_frames_no_route;	/* Not transmitted, no route found */
+	__u32 dropped_frames_congestion;/* Not forwarded due to congestion */
+};
+
+#define PREQ_Q_F_START		0x1
+#define PREQ_Q_F_REFRESH	0x2
+struct mesh_preq_queue {
+	struct list_head list;
+	u8 dst[ETH_ALEN];
+	u8 flags;
+};
+
+struct ieee80211_roc_work {
+	struct list_head list;
+	struct list_head dependents;
+
+	struct delayed_work work;
+
+	struct ieee80211_sub_if_data *sdata;
+
+	struct ieee80211_channel *chan;
+
+	bool started, abort, hw_begun, notified;
+	bool to_be_freed;
+	bool on_channel;
+
+	unsigned long hw_start_time;
+
+	u32 duration, req_duration;
+	struct sk_buff *frame;
+	u64 cookie, mgmt_tx_cookie;
+	enum ieee80211_roc_type type;
+};
+
+/* flags used in struct ieee80211_if_managed.flags */
+enum ieee80211_sta_flags {
+	IEEE80211_STA_CONNECTION_POLL	= BIT(1),
+	IEEE80211_STA_CONTROL_PORT	= BIT(2),
+	IEEE80211_STA_DISABLE_HT	= BIT(4),
+	IEEE80211_STA_MFP_ENABLED	= BIT(6),
+	IEEE80211_STA_UAPSD_ENABLED	= BIT(7),
+	IEEE80211_STA_NULLFUNC_ACKED	= BIT(8),
+	IEEE80211_STA_RESET_SIGNAL_AVE	= BIT(9),
+	IEEE80211_STA_DISABLE_40MHZ	= BIT(10),
+	IEEE80211_STA_DISABLE_VHT	= BIT(11),
+	IEEE80211_STA_DISABLE_80P80MHZ	= BIT(12),
+	IEEE80211_STA_DISABLE_160MHZ	= BIT(13),
+	IEEE80211_STA_DISABLE_WMM	= BIT(14),
+	IEEE80211_STA_ENABLE_RRM	= BIT(15),
+};
+
+struct ieee80211_mgd_auth_data {
+	struct cfg80211_bss *bss;
+	unsigned long timeout;
+	int tries;
+	u16 algorithm, expected_transaction;
+
+	u8 key[WLAN_KEY_LEN_WEP104];
+	u8 key_len, key_idx;
+	bool done;
+	bool timeout_started;
+
+	u16 sae_trans, sae_status;
+	size_t data_len;
+	u8 data[];
+};
+
+struct ieee80211_mgd_assoc_data {
+	struct cfg80211_bss *bss;
+	const u8 *supp_rates;
+
+	unsigned long timeout;
+	int tries;
+
+	u16 capability;
+	u8 prev_bssid[ETH_ALEN];
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	u8 ssid_len;
+	u8 supp_rates_len;
+	bool wmm, uapsd;
+	bool need_beacon;
+	bool synced;
+	bool timeout_started;
+
+	u8 ap_ht_param;
+
+	struct ieee80211_vht_cap ap_vht_cap;
+
+	size_t ie_len;
+	u8 ie[];
+};
+
+struct ieee80211_sta_tx_tspec {
+	/* timestamp of the first packet in the time slice */
+	unsigned long time_slice_start;
+
+	u32 admitted_time; /* in usecs, unlike over the air */
+	u8 tsid;
+	s8 up; /* signed to be able to invalidate with -1 during teardown */
+
+	/* consumed TX time in microseconds in the time slice */
+	u32 consumed_tx_time;
+	enum {
+		TX_TSPEC_ACTION_NONE = 0,
+		TX_TSPEC_ACTION_DOWNGRADE,
+		TX_TSPEC_ACTION_STOP_DOWNGRADE,
+	} action;
+	bool downgraded;
+};
+
+struct ieee80211_if_managed {
+	struct timer_list timer;
+	struct timer_list conn_mon_timer;
+	struct timer_list bcn_mon_timer;
+	struct timer_list chswitch_timer;
+	struct work_struct monitor_work;
+	struct work_struct chswitch_work;
+	struct work_struct beacon_connection_loss_work;
+	struct work_struct csa_connection_drop_work;
+
+	unsigned long beacon_timeout;
+	unsigned long probe_timeout;
+	int probe_send_count;
+	bool nullfunc_failed;
+	bool connection_loss;
+
+	struct cfg80211_bss *associated;
+	struct ieee80211_mgd_auth_data *auth_data;
+	struct ieee80211_mgd_assoc_data *assoc_data;
+
+	u8 bssid[ETH_ALEN];
+
+	u16 aid;
+
+	bool powersave; /* powersave requested for this iface */
+	bool broken_ap; /* AP is broken -- turn off powersave */
+	bool have_beacon;
+	u8 dtim_period;
+	enum ieee80211_smps_mode req_smps, /* requested smps mode */
+				 driver_smps_mode; /* smps mode request */
+
+	struct work_struct request_smps_work;
+
+	unsigned int flags;
+
+	bool csa_waiting_bcn;
+	bool csa_ignored_same_chan;
+
+	bool beacon_crc_valid;
+	u32 beacon_crc;
+
+	bool status_acked;
+	bool status_received;
+	__le16 status_fc;
+
+	enum {
+		IEEE80211_MFP_DISABLED,
+		IEEE80211_MFP_OPTIONAL,
+		IEEE80211_MFP_REQUIRED
+	} mfp; /* management frame protection */
+
+	/*
+	 * Bitmask of enabled u-apsd queues,
+	 * IEEE80211_WMM_IE_STA_QOSINFO_AC_BE & co. Needs a new association
+	 * to take effect.
+	 */
+	unsigned int uapsd_queues;
+
+	/*
+	 * Maximum number of buffered frames AP can deliver during a
+	 * service period, IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL or similar.
+	 * Needs a new association to take effect.
+	 */
+	unsigned int uapsd_max_sp_len;
+
+	int wmm_last_param_set;
+
+	u8 use_4addr;
+
+	s16 p2p_noa_index;
+
+	/* Signal strength from the last Beacon frame in the current BSS. */
+	int last_beacon_signal;
+
+	/*
+	 * Weighted average of the signal strength from Beacon frames in the
+	 * current BSS. This is in units of 1/16 of the signal unit to maintain
+	 * accuracy and to speed up calculations, i.e., the value need to be
+	 * divided by 16 to get the actual value.
+	 */
+	int ave_beacon_signal;
+
+	/*
+	 * Number of Beacon frames used in ave_beacon_signal. This can be used
+	 * to avoid generating less reliable cqm events that would be based
+	 * only on couple of received frames.
+	 */
+	unsigned int count_beacon_signal;
+
+	/*
+	 * Last Beacon frame signal strength average (ave_beacon_signal / 16)
+	 * that triggered a cqm event. 0 indicates that no event has been
+	 * generated for the current association.
+	 */
+	int last_cqm_event_signal;
+
+	/*
+	 * State variables for keeping track of RSSI of the AP currently
+	 * connected to and informing driver when RSSI has gone
+	 * below/above a certain threshold.
+	 */
+	int rssi_min_thold, rssi_max_thold;
+	int last_ave_beacon_signal;
+
+	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
+	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
+	struct ieee80211_vht_cap vht_capa; /* configured VHT overrides */
+	struct ieee80211_vht_cap vht_capa_mask; /* Valid parts of vht_capa */
+
+	/* TDLS support */
+	u8 tdls_peer[ETH_ALEN] __aligned(2);
+	struct delayed_work tdls_peer_del_work;
+	struct sk_buff *orig_teardown_skb; /* The original teardown skb */
+	struct sk_buff *teardown_skb; /* A copy to send through the AP */
+	spinlock_t teardown_lock; /* To lock changing teardown_skb */
+	bool tdls_chan_switch_prohibited;
+
+	/* WMM-AC TSPEC support */
+	struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];
+	/* Use a separate work struct so that we can do something here
+	 * while the sdata->work is flushing the queues, for example.
+	 * otherwise, in scenarios where we hardly get any traffic out
+	 * on the BE queue, but there's a lot of VO traffic, we might
+	 * get stuck in a downgraded situation and flush takes forever.
+	 */
+	struct delayed_work tx_tspec_wk;
+};
+
+struct ieee80211_if_ibss {
+	struct timer_list timer;
+	struct work_struct csa_connection_drop_work;
+
+	unsigned long last_scan_completed;
+
+	u32 basic_rates;
+
+	bool fixed_bssid;
+	bool fixed_channel;
+	bool privacy;
+
+	bool control_port;
+	bool userspace_handles_dfs;
+
+	u8 bssid[ETH_ALEN] __aligned(2);
+	u8 ssid[IEEE80211_MAX_SSID_LEN];
+	u8 ssid_len, ie_len;
+	u8 *ie;
+	struct cfg80211_chan_def chandef;
+
+	unsigned long ibss_join_req;
+	/* probe response/beacon for IBSS */
+	struct beacon_data __rcu *presp;
+
+	struct ieee80211_ht_cap ht_capa; /* configured ht-cap over-rides */
+	struct ieee80211_ht_cap ht_capa_mask; /* Valid parts of ht_capa */
+
+	spinlock_t incomplete_lock;
+	struct list_head incomplete_stations;
+
+	enum {
+		IEEE80211_IBSS_MLME_SEARCH,
+		IEEE80211_IBSS_MLME_JOINED,
+	} state;
+};
+
+/**
+ * struct ieee80211_if_ocb - OCB mode state
+ *
+ * @housekeeping_timer: timer for periodic invocation of a housekeeping task
+ * @wrkq_flags: OCB deferred task action
+ * @incomplete_lock: delayed STA insertion lock
+ * @incomplete_stations: list of STAs waiting for delayed insertion
+ * @joined: indication if the interface is connected to an OCB network
+ */
+struct ieee80211_if_ocb {
+	struct timer_list housekeeping_timer;
+	unsigned long wrkq_flags;
+
+	spinlock_t incomplete_lock;
+	struct list_head incomplete_stations;
+
+	bool joined;
+};
+
+/**
+ * struct ieee80211_mesh_sync_ops - Extensible synchronization framework interface
+ *
+ * these declarations define the interface, which enables
+ * vendor-specific mesh synchronization
+ *
+ */
+struct ieee802_11_elems;
+struct ieee80211_mesh_sync_ops {
+	void (*rx_bcn_presp)(struct ieee80211_sub_if_data *sdata,
+			     u16 stype,
+			     struct ieee80211_mgmt *mgmt,
+			     struct ieee802_11_elems *elems,
+			     struct ieee80211_rx_status *rx_status);
+
+	/* should be called with beacon_data under RCU read lock */
+	void (*adjust_tbtt)(struct ieee80211_sub_if_data *sdata,
+			    struct beacon_data *beacon);
+	/* add other framework functions here */
+};
+
+struct mesh_csa_settings {
+	struct rcu_head rcu_head;
+	struct cfg80211_csa_settings settings;
+};
+
+struct ieee80211_if_mesh {
+	struct timer_list housekeeping_timer;
+	struct timer_list mesh_path_timer;
+	struct timer_list mesh_path_root_timer;
+
+	unsigned long wrkq_flags;
+	unsigned long mbss_changed;
+
+	u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
+	size_t mesh_id_len;
+	/* Active Path Selection Protocol Identifier */
+	u8 mesh_pp_id;
+	/* Active Path Selection Metric Identifier */
+	u8 mesh_pm_id;
+	/* Congestion Control Mode Identifier */
+	u8 mesh_cc_id;
+	/* Synchronization Protocol Identifier */
+	u8 mesh_sp_id;
+	/* Authentication Protocol Identifier */
+	u8 mesh_auth_id;
+	/* Local mesh Sequence Number */
+	u32 sn;
+	/* Last used PREQ ID */
+	u32 preq_id;
+	atomic_t mpaths;
+	/* Timestamp of last SN update */
+	unsigned long last_sn_update;
+	/* Time when it's ok to send next PERR */
+	unsigned long next_perr;
+	/* Timestamp of last PREQ sent */
+	unsigned long last_preq;
+	struct mesh_rmc *rmc;
+	spinlock_t mesh_preq_queue_lock;
+	struct mesh_preq_queue preq_queue;
+	int preq_queue_len;
+	struct mesh_stats mshstats;
+	struct mesh_config mshcfg;
+	atomic_t estab_plinks;
+	u32 mesh_seqnum;
+	bool accepting_plinks;
+	int num_gates;
+	struct beacon_data __rcu *beacon;
+	const u8 *ie;
+	u8 ie_len;
+	enum {
+		IEEE80211_MESH_SEC_NONE = 0x0,
+		IEEE80211_MESH_SEC_AUTHED = 0x1,
+		IEEE80211_MESH_SEC_SECURED = 0x2,
+	} security;
+	bool user_mpm;
+	/* Extensible Synchronization Framework */
+	const struct ieee80211_mesh_sync_ops *sync_ops;
+	s64 sync_offset_clockdrift_max;
+	spinlock_t sync_offset_lock;
+	bool adjusting_tbtt;
+	/* mesh power save */
+	enum nl80211_mesh_power_mode nonpeer_pm;
+	int ps_peers_light_sleep;
+	int ps_peers_deep_sleep;
+	struct ps_data ps;
+	/* Channel Switching Support */
+	struct mesh_csa_settings __rcu *csa;
+	enum {
+		IEEE80211_MESH_CSA_ROLE_NONE,
+		IEEE80211_MESH_CSA_ROLE_INIT,
+		IEEE80211_MESH_CSA_ROLE_REPEATER,
+	} csa_role;
+	u8 chsw_ttl;
+	u16 pre_value;
+
+	/* offset from skb->data while building IE */
+	int meshconf_offset;
+};
+
+#ifdef CONFIG_MAC80211_MESH
+#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name)	\
+	do { (msh)->mshstats.name++; } while (0)
+#else
+#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
+	do { } while (0)
+#endif
+
+/**
+ * enum ieee80211_sub_if_data_flags - virtual interface flags
+ *
+ * @IEEE80211_SDATA_ALLMULTI: interface wants all multicast packets
+ * @IEEE80211_SDATA_PROMISC: interface is promisc
+ * @IEEE80211_SDATA_OPERATING_GMODE: operating in G-only mode
+ * @IEEE80211_SDATA_DONT_BRIDGE_PACKETS: bridge packets between
+ *	associated stations and deliver multicast frames both
+ *	back to wireless media and to the local net stack.
+ * @IEEE80211_SDATA_DISCONNECT_RESUME: Disconnect after resume.
+ * @IEEE80211_SDATA_IN_DRIVER: indicates interface was added to driver
+ */
+enum ieee80211_sub_if_data_flags {
+	IEEE80211_SDATA_ALLMULTI		= BIT(0),
+	IEEE80211_SDATA_PROMISC			= BIT(1),
+	IEEE80211_SDATA_OPERATING_GMODE		= BIT(2),
+	IEEE80211_SDATA_DONT_BRIDGE_PACKETS	= BIT(3),
+	IEEE80211_SDATA_DISCONNECT_RESUME	= BIT(4),
+	IEEE80211_SDATA_IN_DRIVER		= BIT(5),
+};
+
+/**
+ * enum ieee80211_sdata_state_bits - virtual interface state bits
+ * @SDATA_STATE_RUNNING: virtual interface is up & running; this
+ *	mirrors netif_running() but is separate for interface type
+ *	change handling while the interface is up
+ * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
+ *	mode, so queues are stopped
+ * @SDATA_STATE_OFFCHANNEL_BEACON_STOPPED: Beaconing was stopped due
+ *	to offchannel, reset when offchannel returns
+ */
+enum ieee80211_sdata_state_bits {
+	SDATA_STATE_RUNNING,
+	SDATA_STATE_OFFCHANNEL,
+	SDATA_STATE_OFFCHANNEL_BEACON_STOPPED,
+};
+
+/**
+ * enum ieee80211_chanctx_mode - channel context configuration mode
+ *
+ * @IEEE80211_CHANCTX_SHARED: channel context may be used by
+ *	multiple interfaces
+ * @IEEE80211_CHANCTX_EXCLUSIVE: channel context can be used
+ *	only by a single interface. This can be used for example for
+ *	non-fixed channel IBSS.
+ */
+enum ieee80211_chanctx_mode {
+	IEEE80211_CHANCTX_SHARED,
+	IEEE80211_CHANCTX_EXCLUSIVE
+};
+
+/**
+ * enum ieee80211_chanctx_replace_state - channel context replacement state
+ *
+ * This is used for channel context in-place reservations that require channel
+ * context switch/swap.
+ *
+ * @IEEE80211_CHANCTX_REPLACE_NONE: no replacement is taking place
+ * @IEEE80211_CHANCTX_WILL_BE_REPLACED: this channel context will be replaced
+ *	by a (not yet registered) channel context pointed by %replace_ctx.
+ * @IEEE80211_CHANCTX_REPLACES_OTHER: this (not yet registered) channel context
+ *	replaces an existing channel context pointed to by %replace_ctx.
+ */
+enum ieee80211_chanctx_replace_state {
+	IEEE80211_CHANCTX_REPLACE_NONE,
+	IEEE80211_CHANCTX_WILL_BE_REPLACED,
+	IEEE80211_CHANCTX_REPLACES_OTHER,
+};
+
+struct ieee80211_chanctx {
+	struct list_head list;
+	struct rcu_head rcu_head;
+
+	struct list_head assigned_vifs;
+	struct list_head reserved_vifs;
+
+	enum ieee80211_chanctx_replace_state replace_state;
+	struct ieee80211_chanctx *replace_ctx;
+
+	enum ieee80211_chanctx_mode mode;
+	bool driver_present;
+
+	struct ieee80211_chanctx_conf conf;
+};
+
+struct mac80211_qos_map {
+	struct cfg80211_qos_map qos_map;
+	struct rcu_head rcu_head;
+};
+
+enum txq_info_flags {
+	IEEE80211_TXQ_STOP,
+	IEEE80211_TXQ_AMPDU,
+};
+
+struct txq_info {
+	struct sk_buff_head queue;
+	unsigned long flags;
+
+	/* keep last! */
+	struct ieee80211_txq txq;
+};
+
+struct ieee80211_sub_if_data {
+	struct list_head list;
+
+	struct wireless_dev wdev;
+
+	/* keys */
+	struct list_head key_list;
+
+	/* count for keys needing tailroom space allocation */
+	int crypto_tx_tailroom_needed_cnt;
+	int crypto_tx_tailroom_pending_dec;
+	struct delayed_work dec_tailroom_needed_wk;
+
+	struct net_device *dev;
+	struct ieee80211_local *local;
+
+	unsigned int flags;
+
+	unsigned long state;
+
+	char name[IFNAMSIZ];
+
+	/* Fragment table for host-based reassembly */
+	struct ieee80211_fragment_entry	fragments[IEEE80211_FRAGMENT_MAX];
+	unsigned int fragment_next;
+
+	/* TID bitmap for NoAck policy */
+	u16 noack_map;
+
+	/* bit field of ACM bits (BIT(802.1D tag)) */
+	u8 wmm_acm;
+
+	struct ieee80211_key __rcu *keys[NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS];
+	struct ieee80211_key __rcu *default_unicast_key;
+	struct ieee80211_key __rcu *default_multicast_key;
+	struct ieee80211_key __rcu *default_mgmt_key;
+
+	u16 sequence_number;
+	__be16 control_port_protocol;
+	bool control_port_no_encrypt;
+	int encrypt_headroom;
+
+	atomic_t txqs_len[IEEE80211_NUM_ACS];
+	struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS];
+	struct mac80211_qos_map __rcu *qos_map;
+
+	struct work_struct csa_finalize_work;
+	bool csa_block_tx; /* write-protected by sdata_lock and local->mtx */
+	struct cfg80211_chan_def csa_chandef;
+
+	struct list_head assigned_chanctx_list; /* protected by chanctx_mtx */
+	struct list_head reserved_chanctx_list; /* protected by chanctx_mtx */
+
+	/* context reservation -- protected with chanctx_mtx */
+	struct ieee80211_chanctx *reserved_chanctx;
+	struct cfg80211_chan_def reserved_chandef;
+	bool reserved_radar_required;
+	bool reserved_ready;
+
+	/* used to reconfigure hardware SM PS */
+	struct work_struct recalc_smps;
+
+	struct work_struct work;
+	struct sk_buff_head skb_queue;
+
+	u8 needed_rx_chains;
+	enum ieee80211_smps_mode smps_mode;
+
+	int user_power_level; /* in dBm */
+	int ap_power_level; /* in dBm */
+
+	bool radar_required;
+	struct delayed_work dfs_cac_timer_work;
+
+	/*
+	 * AP this belongs to: self in AP mode and
+	 * corresponding AP in VLAN mode, NULL for
+	 * all others (might be needed later in IBSS)
+	 */
+	struct ieee80211_if_ap *bss;
+
+	/* bitmap of allowed (non-MCS) rate indexes for rate control */
+	u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
+
+	bool rc_has_mcs_mask[IEEE80211_NUM_BANDS];
+	u8  rc_rateidx_mcs_mask[IEEE80211_NUM_BANDS][IEEE80211_HT_MCS_MASK_LEN];
+
+	union {
+		struct ieee80211_if_ap ap;
+		struct ieee80211_if_wds wds;
+		struct ieee80211_if_vlan vlan;
+		struct ieee80211_if_managed mgd;
+		struct ieee80211_if_ibss ibss;
+		struct ieee80211_if_mesh mesh;
+		struct ieee80211_if_ocb ocb;
+		u32 mntr_flags;
+	} u;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+	struct {
+		struct dentry *subdir_stations;
+		struct dentry *default_unicast_key;
+		struct dentry *default_multicast_key;
+		struct dentry *default_mgmt_key;
+	} debugfs;
+#endif
+
+	/* must be last, dynamically sized area in this! */
+	struct ieee80211_vif vif;
+};
+
+static inline
+struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
+{
+	return container_of(p, struct ieee80211_sub_if_data, vif);
+}
+
+static inline void sdata_lock(struct ieee80211_sub_if_data *sdata)
+	__acquires(&sdata->wdev.mtx)
+{
+	mutex_lock(&sdata->wdev.mtx);
+	__acquire(&sdata->wdev.mtx);
+}
+
+static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata)
+	__releases(&sdata->wdev.mtx)
+{
+	mutex_unlock(&sdata->wdev.mtx);
+	__release(&sdata->wdev.mtx);
+}
+
+#define sdata_dereference(p, sdata) \
+	rcu_dereference_protected(p, lockdep_is_held(&sdata->wdev.mtx))
+
+static inline void
+sdata_assert_lock(struct ieee80211_sub_if_data *sdata)
+{
+	lockdep_assert_held(&sdata->wdev.mtx);
+}
+
+static inline enum ieee80211_band
+ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata)
+{
+	enum ieee80211_band band = IEEE80211_BAND_2GHZ;
+	struct ieee80211_chanctx_conf *chanctx_conf;
+
+	rcu_read_lock();
+	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+	if (!WARN_ON(!chanctx_conf))
+		band = chanctx_conf->def.chan->band;
+	rcu_read_unlock();
+
+	return band;
+}
+
+static inline int
+ieee80211_chandef_get_shift(struct cfg80211_chan_def *chandef)
+{
+	switch (chandef->width) {
+	case NL80211_CHAN_WIDTH_5:
+		return 2;
+	case NL80211_CHAN_WIDTH_10:
+		return 1;
+	default:
+		return 0;
+	}
+}
+
+static inline int
+ieee80211_vif_get_shift(struct ieee80211_vif *vif)
+{
+	struct ieee80211_chanctx_conf *chanctx_conf;
+	int shift = 0;
+
+	rcu_read_lock();
+	chanctx_conf = rcu_dereference(vif->chanctx_conf);
+	if (chanctx_conf)
+		shift = ieee80211_chandef_get_shift(&chanctx_conf->def);
+	rcu_read_unlock();
+
+	return shift;
+}
+
+struct ieee80211_rx_agg {
+	u8 addr[ETH_ALEN];
+	u16 tid;
+};
+
+enum sdata_queue_type {
+	IEEE80211_SDATA_QUEUE_TYPE_FRAME	= 0,
+	IEEE80211_SDATA_QUEUE_AGG_START		= 1,
+	IEEE80211_SDATA_QUEUE_AGG_STOP		= 2,
+	IEEE80211_SDATA_QUEUE_RX_AGG_START	= 3,
+	IEEE80211_SDATA_QUEUE_RX_AGG_STOP	= 4,
+	IEEE80211_SDATA_QUEUE_TDLS_CHSW		= 5,
+};
+
+enum {
+	IEEE80211_RX_MSG	= 1,
+	IEEE80211_TX_STATUS_MSG	= 2,
+};
+
+enum queue_stop_reason {
+	IEEE80211_QUEUE_STOP_REASON_DRIVER,
+	IEEE80211_QUEUE_STOP_REASON_PS,
+	IEEE80211_QUEUE_STOP_REASON_CSA,
+	IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
+	IEEE80211_QUEUE_STOP_REASON_SUSPEND,
+	IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
+	IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL,
+	IEEE80211_QUEUE_STOP_REASON_FLUSH,
+	IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
+	IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
+
+	IEEE80211_QUEUE_STOP_REASONS,
+};
+
+#ifdef CONFIG_MAC80211_LEDS
+struct tpt_led_trigger {
+	struct led_trigger trig;
+	char name[32];
+	const struct ieee80211_tpt_blink *blink_table;
+	unsigned int blink_table_len;
+	struct timer_list timer;
+	unsigned long prev_traffic;
+	unsigned long tx_bytes, rx_bytes;
+	unsigned int active, want;
+	bool running;
+};
+#endif
+
+/**
+ * mac80211 scan flags - currently active scan mode
+ *
+ * @SCAN_SW_SCANNING: We're currently in the process of scanning but may as
+ *	well be on the operating channel
+ * @SCAN_HW_SCANNING: The hardware is scanning for us, we have no way to
+ *	determine if we are on the operating channel or not
+ * @SCAN_ONCHANNEL_SCANNING:  Do a software scan on only the current operating
+ *	channel. This should not interrupt normal traffic.
+ * @SCAN_COMPLETED: Set for our scan work function when the driver reported
+ *	that the scan completed.
+ * @SCAN_ABORTED: Set for our scan work function when the driver reported
+ *	a scan complete for an aborted scan.
+ * @SCAN_HW_CANCELLED: Set for our scan work function when the scan is being
+ *	cancelled.
+ */
+enum {
+	SCAN_SW_SCANNING,
+	SCAN_HW_SCANNING,
+	SCAN_ONCHANNEL_SCANNING,
+	SCAN_COMPLETED,
+	SCAN_ABORTED,
+	SCAN_HW_CANCELLED,
+};
+
+/**
+ * enum mac80211_scan_state - scan state machine states
+ *
+ * @SCAN_DECISION: Main entry point to the scan state machine, this state
+ *	determines if we should keep on scanning or switch back to the
+ *	operating channel
+ * @SCAN_SET_CHANNEL: Set the next channel to be scanned
+ * @SCAN_SEND_PROBE: Send probe requests and wait for probe responses
+ * @SCAN_SUSPEND: Suspend the scan and go back to operating channel to
+ *	send out data
+ * @SCAN_RESUME: Resume the scan and scan the next channel
+ * @SCAN_ABORT: Abort the scan and go back to operating channel
+ */
+enum mac80211_scan_state {
+	SCAN_DECISION,
+	SCAN_SET_CHANNEL,
+	SCAN_SEND_PROBE,
+	SCAN_SUSPEND,
+	SCAN_RESUME,
+	SCAN_ABORT,
+};
+
+struct ieee80211_local {
+	/* embed the driver visible part.
+	 * don't cast (use the static inlines below), but we keep
+	 * it first anyway so they become a no-op */
+	struct ieee80211_hw hw;
+
+	const struct ieee80211_ops *ops;
+
+	/*
+	 * private workqueue to mac80211. mac80211 makes this accessible
+	 * via ieee80211_queue_work()
+	 */
+	struct workqueue_struct *workqueue;
+
+	unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
+	int q_stop_reasons[IEEE80211_MAX_QUEUES][IEEE80211_QUEUE_STOP_REASONS];
+	/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
+	spinlock_t queue_stop_reason_lock;
+
+	int open_count;
+	int monitors, cooked_mntrs;
+	/* number of interfaces with corresponding FIF_ flags */
+	int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
+	    fif_probe_req;
+	int probe_req_reg;
+	unsigned int filter_flags; /* FIF_* */
+
+	bool wiphy_ciphers_allocated;
+
+	bool use_chanctx;
+
+	/* protects the aggregated multicast list and filter calls */
+	spinlock_t filter_lock;
+
+	/* used for uploading changed mc list */
+	struct work_struct reconfig_filter;
+
+	/* aggregated multicast list */
+	struct netdev_hw_addr_list mc_list;
+
+	bool tim_in_locked_section; /* see ieee80211_beacon_get() */
+
+	/*
+	 * suspended is true if we finished all the suspend _and_ we have
+	 * not yet come up from resume. This is to be used by mac80211
+	 * to ensure driver sanity during suspend and mac80211's own
+	 * sanity. It can eventually be used for WoW as well.
+	 */
+	bool suspended;
+
+	/*
+	 * Resuming is true while suspended, but when we're reprogramming the
+	 * hardware -- at that time it's allowed to use ieee80211_queue_work()
+	 * again even though some other parts of the stack are still suspended
+	 * and we still drop received frames to avoid waking the stack.
+	 */
+	bool resuming;
+
+	/*
+	 * quiescing is true during the suspend process _only_ to
+	 * ease timer cancelling etc.
+	 */
+	bool quiescing;
+
+	/* device is started */
+	bool started;
+
+	/* device is during a HW reconfig */
+	bool in_reconfig;
+
+	/* wowlan is enabled -- don't reconfig on resume */
+	bool wowlan;
+
+	struct work_struct radar_detected_work;
+
+	/* number of RX chains the hardware has */
+	u8 rx_chains;
+
+	int tx_headroom; /* required headroom for hardware/radiotap */
+
+	/* Tasklet and skb queue to process calls from IRQ mode. All frames
+	 * added to skb_queue will be processed, but frames in
+	 * skb_queue_unreliable may be dropped if the total length of these
+	 * queues increases over the limit. */
+#define IEEE80211_IRQSAFE_QUEUE_LIMIT 128
+	struct tasklet_struct tasklet;
+	struct sk_buff_head skb_queue;
+	struct sk_buff_head skb_queue_unreliable;
+
+	spinlock_t rx_path_lock;
+
+	/* Station data */
+	/*
+	 * The mutex only protects the list, hash table and
+	 * counter, reads are done with RCU.
+	 */
+	struct mutex sta_mtx;
+	spinlock_t tim_lock;
+	unsigned long num_sta;
+	struct list_head sta_list;
+	struct rhashtable sta_hash;
+	struct timer_list sta_cleanup;
+	int sta_generation;
+
+	struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
+	struct tasklet_struct tx_pending_tasklet;
+
+	atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
+
+	/* number of interfaces with corresponding IFF_ flags */
+	atomic_t iff_allmultis, iff_promiscs;
+
+	struct rate_control_ref *rate_ctrl;
+
+	struct crypto_cipher *wep_tx_tfm;
+	struct crypto_cipher *wep_rx_tfm;
+	u32 wep_iv;
+
+	/* see iface.c */
+	struct list_head interfaces;
+	struct mutex iflist_mtx;
+
+	/*
+	 * Key mutex, protects sdata's key_list and sta_info's
+	 * key pointers (write access, they're RCU.)
+	 */
+	struct mutex key_mtx;
+
+	/* mutex for scan and work locking */
+	struct mutex mtx;
+
+	/* Scanning and BSS list */
+	unsigned long scanning;
+	struct cfg80211_ssid scan_ssid;
+	struct cfg80211_scan_request *int_scan_req;
+	struct cfg80211_scan_request __rcu *scan_req;
+	struct ieee80211_scan_request *hw_scan_req;
+	struct cfg80211_chan_def scan_chandef;
+	enum ieee80211_band hw_scan_band;
+	int scan_channel_idx;
+	int scan_ies_len;
+	int hw_scan_ies_bufsize;
+
+	struct work_struct sched_scan_stopped_work;
+	struct ieee80211_sub_if_data __rcu *sched_scan_sdata;
+	struct cfg80211_sched_scan_request __rcu *sched_scan_req;
+	u8 scan_addr[ETH_ALEN];
+
+	unsigned long leave_oper_channel_time;
+	enum mac80211_scan_state next_scan_state;
+	struct delayed_work scan_work;
+	struct ieee80211_sub_if_data __rcu *scan_sdata;
+	/* For backward compatibility only -- do not use */
+	struct cfg80211_chan_def _oper_chandef;
+
+	/* Temporary remain-on-channel for off-channel operations */
+	struct ieee80211_channel *tmp_channel;
+
+	/* channel contexts */
+	struct list_head chanctx_list;
+	struct mutex chanctx_mtx;
+
+	/* SNMP counters */
+	/* dot11CountersTable */
+	u32 dot11TransmittedFragmentCount;
+	u32 dot11MulticastTransmittedFrameCount;
+	u32 dot11FailedCount;
+	u32 dot11RetryCount;
+	u32 dot11MultipleRetryCount;
+	u32 dot11FrameDuplicateCount;
+	u32 dot11ReceivedFragmentCount;
+	u32 dot11MulticastReceivedFrameCount;
+	u32 dot11TransmittedFrameCount;
+
+#ifdef CONFIG_MAC80211_LEDS
+	struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
+	struct tpt_led_trigger *tpt_led_trigger;
+	char tx_led_name[32], rx_led_name[32],
+	     assoc_led_name[32], radio_led_name[32];
+#endif
+
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+	/* TX/RX handler statistics */
+	unsigned int tx_handlers_drop;
+	unsigned int tx_handlers_queued;
+	unsigned int tx_handlers_drop_fragment;
+	unsigned int tx_handlers_drop_wep;
+	unsigned int tx_handlers_drop_not_assoc;
+	unsigned int tx_handlers_drop_unauth_port;
+	unsigned int rx_handlers_drop;
+	unsigned int rx_handlers_queued;
+	unsigned int rx_handlers_drop_nullfunc;
+	unsigned int rx_handlers_drop_defrag;
+	unsigned int rx_handlers_drop_short;
+	unsigned int tx_expand_skb_head;
+	unsigned int tx_expand_skb_head_cloned;
+	unsigned int rx_expand_skb_head;
+	unsigned int rx_expand_skb_head2;
+	unsigned int rx_handlers_fragments;
+	unsigned int tx_status_drop;
+#define I802_DEBUG_INC(c) (c)++
+#else /* CONFIG_MAC80211_DEBUG_COUNTERS */
+#define I802_DEBUG_INC(c) do { } while (0)
+#endif /* CONFIG_MAC80211_DEBUG_COUNTERS */
+
+
+	int total_ps_buffered; /* total number of all buffered unicast and
+				* multicast packets for power saving stations
+				*/
+
+	bool pspolling;
+	bool offchannel_ps_enabled;
+	/*
+	 * PS can only be enabled when we have exactly one managed
+	 * interface (and monitors) in PS, this then points there.
+	 */
+	struct ieee80211_sub_if_data *ps_sdata;
+	struct work_struct dynamic_ps_enable_work;
+	struct work_struct dynamic_ps_disable_work;
+	struct timer_list dynamic_ps_timer;
+	struct notifier_block network_latency_notifier;
+	struct notifier_block ifa_notifier;
+	struct notifier_block ifa6_notifier;
+
+	/*
+	 * The dynamic ps timeout configured from user space via WEXT -
+	 * this will override whatever chosen by mac80211 internally.
+	 */
+	int dynamic_ps_forced_timeout;
+
+	int user_power_level; /* in dBm, for all interfaces */
+
+	enum ieee80211_smps_mode smps_mode;
+
+	struct work_struct restart_work;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+	struct local_debugfsdentries {
+		struct dentry *rcdir;
+		struct dentry *keys;
+	} debugfs;
+#endif
+
+	/*
+	 * Remain-on-channel support
+	 */
+	struct list_head roc_list;
+	struct work_struct hw_roc_start, hw_roc_done;
+	unsigned long hw_roc_start_time;
+	u64 roc_cookie_counter;
+
+	struct idr ack_status_frames;
+	spinlock_t ack_status_lock;
+
+	struct ieee80211_sub_if_data __rcu *p2p_sdata;
+
+	struct napi_struct *napi;
+
+	/* virtual monitor interface */
+	struct ieee80211_sub_if_data __rcu *monitor_sdata;
+	struct cfg80211_chan_def monitor_chandef;
+
+	/* extended capabilities provided by mac80211 */
+	u8 ext_capa[8];
+};
+
+static inline struct ieee80211_sub_if_data *
+IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
+{
+	return netdev_priv(dev);
+}
+
+static inline struct ieee80211_sub_if_data *
+IEEE80211_WDEV_TO_SUB_IF(struct wireless_dev *wdev)
+{
+	return container_of(wdev, struct ieee80211_sub_if_data, wdev);
+}
+
+/* this struct represents 802.11n's RA/TID combination */
+struct ieee80211_ra_tid {
+	u8 ra[ETH_ALEN];
+	u16 tid;
+};
+
+/* this struct holds the value parsing from channel switch IE  */
+struct ieee80211_csa_ie {
+	struct cfg80211_chan_def chandef;
+	u8 mode;
+	u8 count;
+	u8 ttl;
+	u16 pre_value;
+};
+
+/* Parsed Information Elements */
+struct ieee802_11_elems {
+	const u8 *ie_start;
+	size_t total_len;
+
+	/* pointers to IEs */
+	const struct ieee80211_tdls_lnkie *lnk_id;
+	const struct ieee80211_ch_switch_timing *ch_sw_timing;
+	const u8 *ext_capab;
+	const u8 *ssid;
+	const u8 *supp_rates;
+	const u8 *ds_params;
+	const struct ieee80211_tim_ie *tim;
+	const u8 *challenge;
+	const u8 *rsn;
+	const u8 *erp_info;
+	const u8 *ext_supp_rates;
+	const u8 *wmm_info;
+	const u8 *wmm_param;
+	const struct ieee80211_ht_cap *ht_cap_elem;
+	const struct ieee80211_ht_operation *ht_operation;
+	const struct ieee80211_vht_cap *vht_cap_elem;
+	const struct ieee80211_vht_operation *vht_operation;
+	const struct ieee80211_meshconf_ie *mesh_config;
+	const u8 *mesh_id;
+	const u8 *peering;
+	const __le16 *awake_window;
+	const u8 *preq;
+	const u8 *prep;
+	const u8 *perr;
+	const struct ieee80211_rann_ie *rann;
+	const struct ieee80211_channel_sw_ie *ch_switch_ie;
+	const struct ieee80211_ext_chansw_ie *ext_chansw_ie;
+	const struct ieee80211_wide_bw_chansw_ie *wide_bw_chansw_ie;
+	const u8 *country_elem;
+	const u8 *pwr_constr_elem;
+	const u8 *cisco_dtpc_elem;
+	const struct ieee80211_timeout_interval_ie *timeout_int;
+	const u8 *opmode_notif;
+	const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
+	const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
+
+	/* length of them, respectively */
+	u8 ext_capab_len;
+	u8 ssid_len;
+	u8 supp_rates_len;
+	u8 tim_len;
+	u8 challenge_len;
+	u8 rsn_len;
+	u8 ext_supp_rates_len;
+	u8 wmm_info_len;
+	u8 wmm_param_len;
+	u8 mesh_id_len;
+	u8 peering_len;
+	u8 preq_len;
+	u8 prep_len;
+	u8 perr_len;
+	u8 country_elem_len;
+
+	/* whether a parse error occurred while retrieving these elements */
+	bool parse_error;
+};
+
+static inline struct ieee80211_local *hw_to_local(
+	struct ieee80211_hw *hw)
+{
+	return container_of(hw, struct ieee80211_local, hw);
+}
+
+static inline struct txq_info *to_txq_info(struct ieee80211_txq *txq)
+{
+	return container_of(txq, struct txq_info, txq);
+}
+
+static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
+{
+	return ether_addr_equal(raddr, addr) ||
+	       is_broadcast_ether_addr(raddr);
+}
+
+static inline bool
+ieee80211_have_rx_timestamp(struct ieee80211_rx_status *status)
+{
+	WARN_ON_ONCE(status->flag & RX_FLAG_MACTIME_START &&
+		     status->flag & RX_FLAG_MACTIME_END);
+	return status->flag & (RX_FLAG_MACTIME_START | RX_FLAG_MACTIME_END);
+}
+
+u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
+				     struct ieee80211_rx_status *status,
+				     unsigned int mpdu_len,
+				     unsigned int mpdu_offset);
+int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
+void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
+void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
+				      u32 changed);
+void ieee80211_configure_filter(struct ieee80211_local *local);
+u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
+
+/* STA code */
+void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
+int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
+		       struct cfg80211_auth_request *req);
+int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
+			struct cfg80211_assoc_request *req);
+int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
+			 struct cfg80211_deauth_request *req);
+int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
+			   struct cfg80211_disassoc_request *req);
+void ieee80211_send_pspoll(struct ieee80211_local *local,
+			   struct ieee80211_sub_if_data *sdata);
+void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
+void ieee80211_recalc_ps_vif(struct ieee80211_sub_if_data *sdata);
+int ieee80211_max_network_latency(struct notifier_block *nb,
+				  unsigned long data, void *dummy);
+int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
+void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata);
+void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
+				  struct sk_buff *skb);
+void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
+void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mgd_conn_tx_status(struct ieee80211_sub_if_data *sdata,
+				  __le16 fc, bool acked);
+void ieee80211_mgd_quiesce(struct ieee80211_sub_if_data *sdata);
+void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
+void ieee80211_sta_handle_tspec_ac_params(struct ieee80211_sub_if_data *sdata);
+
+/* IBSS code */
+void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
+void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
+void ieee80211_ibss_rx_no_sta(struct ieee80211_sub_if_data *sdata,
+			      const u8 *bssid, const u8 *addr, u32 supp_rates);
+int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
+			struct cfg80211_ibss_params *params);
+int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
+void ieee80211_ibss_work(struct ieee80211_sub_if_data *sdata);
+void ieee80211_ibss_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
+				   struct sk_buff *skb);
+int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
+			      struct cfg80211_csa_settings *csa_settings);
+int ieee80211_ibss_finish_csa(struct ieee80211_sub_if_data *sdata);
+void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
+
+/* OCB code */
+void ieee80211_ocb_work(struct ieee80211_sub_if_data *sdata);
+void ieee80211_ocb_rx_no_sta(struct ieee80211_sub_if_data *sdata,
+			     const u8 *bssid, const u8 *addr, u32 supp_rates);
+void ieee80211_ocb_setup_sdata(struct ieee80211_sub_if_data *sdata);
+int ieee80211_ocb_join(struct ieee80211_sub_if_data *sdata,
+		       struct ocb_setup *setup);
+int ieee80211_ocb_leave(struct ieee80211_sub_if_data *sdata);
+
+/* mesh code */
+void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
+void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
+				   struct sk_buff *skb);
+int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
+			      struct cfg80211_csa_settings *csa_settings);
+int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
+
+/* scan/BSS handling */
+void ieee80211_scan_work(struct work_struct *work);
+int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata,
+				const u8 *ssid, u8 ssid_len,
+				struct ieee80211_channel **channels,
+				unsigned int n_channels,
+				enum nl80211_bss_scan_width scan_width);
+int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
+			   struct cfg80211_scan_request *req);
+void ieee80211_scan_cancel(struct ieee80211_local *local);
+void ieee80211_run_deferred_scan(struct ieee80211_local *local);
+void ieee80211_scan_rx(struct ieee80211_local *local, struct sk_buff *skb);
+
+void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
+struct ieee80211_bss *
+ieee80211_bss_info_update(struct ieee80211_local *local,
+			  struct ieee80211_rx_status *rx_status,
+			  struct ieee80211_mgmt *mgmt,
+			  size_t len,
+			  struct ieee802_11_elems *elems,
+			  struct ieee80211_channel *channel);
+void ieee80211_rx_bss_put(struct ieee80211_local *local,
+			  struct ieee80211_bss *bss);
+
+/* scheduled scan handling */
+int
+__ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
+				     struct cfg80211_sched_scan_request *req);
+int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
+				       struct cfg80211_sched_scan_request *req);
+int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
+void ieee80211_sched_scan_end(struct ieee80211_local *local);
+void ieee80211_sched_scan_stopped_work(struct work_struct *work);
+
+/* off-channel helpers */
+void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local);
+void ieee80211_offchannel_return(struct ieee80211_local *local);
+void ieee80211_roc_setup(struct ieee80211_local *local);
+void ieee80211_start_next_roc(struct ieee80211_local *local);
+void ieee80211_roc_purge(struct ieee80211_local *local,
+			 struct ieee80211_sub_if_data *sdata);
+void ieee80211_roc_notify_destroy(struct ieee80211_roc_work *roc, bool free);
+void ieee80211_sw_roc_work(struct work_struct *work);
+void ieee80211_handle_roc_started(struct ieee80211_roc_work *roc);
+
+/* channel switch handling */
+void ieee80211_csa_finalize_work(struct work_struct *work);
+int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
+			     struct cfg80211_csa_settings *params);
+
+/* interface handling */
+int ieee80211_iface_init(void);
+void ieee80211_iface_exit(void);
+int ieee80211_if_add(struct ieee80211_local *local, const char *name,
+		     unsigned char name_assign_type,
+		     struct wireless_dev **new_wdev, enum nl80211_iftype type,
+		     struct vif_params *params);
+int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
+			     enum nl80211_iftype type);
+void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
+void ieee80211_remove_interfaces(struct ieee80211_local *local);
+u32 ieee80211_idle_off(struct ieee80211_local *local);
+void ieee80211_recalc_idle(struct ieee80211_local *local);
+void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
+				    const int offset);
+int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up);
+void ieee80211_sdata_stop(struct ieee80211_sub_if_data *sdata);
+int ieee80211_add_virtual_monitor(struct ieee80211_local *local);
+void ieee80211_del_virtual_monitor(struct ieee80211_local *local);
+
+bool __ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata);
+void ieee80211_recalc_txpower(struct ieee80211_sub_if_data *sdata,
+			      bool update_bss);
+
+static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
+{
+	return test_bit(SDATA_STATE_RUNNING, &sdata->state);
+}
+
+/* tx handling */
+void ieee80211_clear_tx_pending(struct ieee80211_local *local);
+void ieee80211_tx_pending(unsigned long data);
+netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
+					 struct net_device *dev);
+netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
+				       struct net_device *dev);
+void __ieee80211_subif_start_xmit(struct sk_buff *skb,
+				  struct net_device *dev,
+				  u32 info_flags);
+void ieee80211_purge_tx_queue(struct ieee80211_hw *hw,
+			      struct sk_buff_head *skbs);
+struct sk_buff *
+ieee80211_build_data_template(struct ieee80211_sub_if_data *sdata,
+			      struct sk_buff *skb, u32 info_flags);
+
+/* HT */
+void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata,
+				     struct ieee80211_sta_ht_cap *ht_cap);
+bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata,
+				       struct ieee80211_supported_band *sband,
+				       const struct ieee80211_ht_cap *ht_cap_ie,
+				       struct sta_info *sta);
+void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
+			  const u8 *da, u16 tid,
+			  u16 initiator, u16 reason_code);
+int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
+			       enum ieee80211_smps_mode smps, const u8 *da,
+			       const u8 *bssid);
+void ieee80211_request_smps_ap_work(struct work_struct *work);
+void ieee80211_request_smps_mgd_work(struct work_struct *work);
+bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
+				   enum ieee80211_smps_mode smps_mode_new);
+
+void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
+				     u16 initiator, u16 reason, bool stop);
+void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
+				    u16 initiator, u16 reason, bool stop);
+void __ieee80211_start_rx_ba_session(struct sta_info *sta,
+				     u8 dialog_token, u16 timeout,
+				     u16 start_seq_num, u16 ba_policy, u16 tid,
+				     u16 buf_size, bool tx, bool auto_seq);
+void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
+					 enum ieee80211_agg_stop_reason reason);
+void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
+			     struct sta_info *sta,
+			     struct ieee80211_mgmt *mgmt, size_t len);
+void ieee80211_process_addba_resp(struct ieee80211_local *local,
+				  struct sta_info *sta,
+				  struct ieee80211_mgmt *mgmt,
+				  size_t len);
+void ieee80211_process_addba_request(struct ieee80211_local *local,
+				     struct sta_info *sta,
+				     struct ieee80211_mgmt *mgmt,
+				     size_t len);
+
+int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
+				   enum ieee80211_agg_stop_reason reason);
+int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
+				    enum ieee80211_agg_stop_reason reason);
+void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);
+void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);
+void ieee80211_ba_session_work(struct work_struct *work);
+void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
+void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
+
+u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs);
+
+/* VHT */
+void
+ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data *sdata,
+				    struct ieee80211_supported_band *sband,
+				    const struct ieee80211_vht_cap *vht_cap_ie,
+				    struct sta_info *sta);
+enum ieee80211_sta_rx_bandwidth ieee80211_sta_cap_rx_bw(struct sta_info *sta);
+enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta);
+void ieee80211_sta_set_rx_nss(struct sta_info *sta);
+u32 __ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
+                                  struct sta_info *sta, u8 opmode,
+                                  enum ieee80211_band band, bool nss_only);
+void ieee80211_vht_handle_opmode(struct ieee80211_sub_if_data *sdata,
+				 struct sta_info *sta, u8 opmode,
+				 enum ieee80211_band band, bool nss_only);
+void ieee80211_apply_vhtcap_overrides(struct ieee80211_sub_if_data *sdata,
+				      struct ieee80211_sta_vht_cap *vht_cap);
+
+/* Spectrum management */
+void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
+				       struct ieee80211_mgmt *mgmt,
+				       size_t len);
+/**
+ * ieee80211_parse_ch_switch_ie - parses channel switch IEs
+ * @sdata: the sdata of the interface which has received the frame
+ * @elems: parsed 802.11 elements received with the frame
+ * @current_band: indicates the current band
+ * @sta_flags: contains information about own capabilities and restrictions
+ *	to decide which channel switch announcements can be accepted. Only the
+ *	following subset of &enum ieee80211_sta_flags are evaluated:
+ *	%IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
+ *	%IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
+ *	%IEEE80211_STA_DISABLE_160MHZ.
+ * @bssid: the currently connected bssid (for reporting)
+ * @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
+	All of them will be filled with if success only.
+ * Return: 0 on success, <0 on error and >0 if there is nothing to parse.
+ */
+int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
+				 struct ieee802_11_elems *elems,
+				 enum ieee80211_band current_band,
+				 u32 sta_flags, u8 *bssid,
+				 struct ieee80211_csa_ie *csa_ie);
+
+/* Suspend/resume and hw reconfiguration */
+int ieee80211_reconfig(struct ieee80211_local *local);
+void ieee80211_stop_device(struct ieee80211_local *local);
+
+int __ieee80211_suspend(struct ieee80211_hw *hw,
+			struct cfg80211_wowlan *wowlan);
+
+static inline int __ieee80211_resume(struct ieee80211_hw *hw)
+{
+	struct ieee80211_local *local = hw_to_local(hw);
+
+	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) &&
+	     !test_bit(SCAN_COMPLETED, &local->scanning),
+		"%s: resume with hardware scan still in progress\n",
+		wiphy_name(hw->wiphy));
+
+	return ieee80211_reconfig(hw_to_local(hw));
+}
+
+/* utility functions/constants */
+extern const void *const mac80211_wiphy_privid; /* for wiphy privid */
+u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
+			enum nl80211_iftype type);
+int ieee80211_frame_duration(enum ieee80211_band band, size_t len,
+			     int rate, int erp, int short_preamble,
+			     int shift);
+void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
+				     struct ieee80211_hdr *hdr, const u8 *tsc,
+				     gfp_t gfp);
+void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
+			       bool bss_notify);
+void ieee80211_xmit(struct ieee80211_sub_if_data *sdata,
+		    struct sta_info *sta, struct sk_buff *skb);
+
+void __ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
+				 struct sk_buff *skb, int tid,
+				 enum ieee80211_band band);
+
+static inline void
+ieee80211_tx_skb_tid_band(struct ieee80211_sub_if_data *sdata,
+			  struct sk_buff *skb, int tid,
+			  enum ieee80211_band band)
+{
+	rcu_read_lock();
+	__ieee80211_tx_skb_tid_band(sdata, skb, tid, band);
+	rcu_read_unlock();
+}
+
+static inline void ieee80211_tx_skb_tid(struct ieee80211_sub_if_data *sdata,
+					struct sk_buff *skb, int tid)
+{
+	struct ieee80211_chanctx_conf *chanctx_conf;
+
+	rcu_read_lock();
+	chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
+	if (WARN_ON(!chanctx_conf)) {
+		rcu_read_unlock();
+		kfree_skb(skb);
+		return;
+	}
+
+	__ieee80211_tx_skb_tid_band(sdata, skb, tid,
+				    chanctx_conf->def.chan->band);
+	rcu_read_unlock();
+}
+
+static inline void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata,
+				    struct sk_buff *skb)
+{
+	/* Send all internal mgmt frames on VO. Accordingly set TID to 7. */
+	ieee80211_tx_skb_tid(sdata, skb, 7);
+}
+
+u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
+			       struct ieee802_11_elems *elems,
+			       u64 filter, u32 crc);
+static inline void ieee802_11_parse_elems(const u8 *start, size_t len,
+					  bool action,
+					  struct ieee802_11_elems *elems)
+{
+	ieee802_11_parse_elems_crc(start, len, action, elems, 0, 0);
+}
+
+static inline bool ieee80211_rx_reorder_ready(struct sk_buff_head *frames)
+{
+	struct sk_buff *tail = skb_peek_tail(frames);
+	struct ieee80211_rx_status *status;
+
+	if (!tail)
+		return false;
+
+	status = IEEE80211_SKB_RXCB(tail);
+	if (status->flag & RX_FLAG_AMSDU_MORE)
+		return false;
+
+	return true;
+}
+
+extern const int ieee802_1d_to_ac[8];
+
+static inline int ieee80211_ac_from_tid(int tid)
+{
+	return ieee802_1d_to_ac[tid & 7];
+}
+
+void ieee80211_dynamic_ps_enable_work(struct work_struct *work);
+void ieee80211_dynamic_ps_disable_work(struct work_struct *work);
+void ieee80211_dynamic_ps_timer(unsigned long data);
+void ieee80211_send_nullfunc(struct ieee80211_local *local,
+			     struct ieee80211_sub_if_data *sdata,
+			     int powersave);
+void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
+			     struct ieee80211_hdr *hdr);
+void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
+			     struct ieee80211_hdr *hdr, bool ack, u16 tx_time);
+
+void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
+				     unsigned long queues,
+				     enum queue_stop_reason reason,
+				     bool refcounted);
+void ieee80211_stop_vif_queues(struct ieee80211_local *local,
+			       struct ieee80211_sub_if_data *sdata,
+			       enum queue_stop_reason reason);
+void ieee80211_wake_vif_queues(struct ieee80211_local *local,
+			       struct ieee80211_sub_if_data *sdata,
+			       enum queue_stop_reason reason);
+void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
+				     unsigned long queues,
+				     enum queue_stop_reason reason,
+				     bool refcounted);
+void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
+				    enum queue_stop_reason reason,
+				    bool refcounted);
+void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
+				    enum queue_stop_reason reason,
+				    bool refcounted);
+void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue);
+void ieee80211_add_pending_skb(struct ieee80211_local *local,
+			       struct sk_buff *skb);
+void ieee80211_add_pending_skbs(struct ieee80211_local *local,
+				struct sk_buff_head *skbs);
+void ieee80211_flush_queues(struct ieee80211_local *local,
+			    struct ieee80211_sub_if_data *sdata, bool drop);
+void __ieee80211_flush_queues(struct ieee80211_local *local,
+			      struct ieee80211_sub_if_data *sdata,
+			      unsigned int queues, bool drop);
+
+static inline bool ieee80211_can_run_worker(struct ieee80211_local *local)
+{
+	/*
+	 * If quiescing is set, we are racing with __ieee80211_suspend.
+	 * __ieee80211_suspend flushes the workers after setting quiescing,
+	 * and we check quiescing / suspended before enqueing new workers.
+	 * We should abort the worker to avoid the races below.
+	 */
+	if (local->quiescing)
+		return false;
+
+	/*
+	 * We might already be suspended if the following scenario occurs:
+	 * __ieee80211_suspend		Control path
+	 *
+	 *				if (local->quiescing)
+	 *					return;
+	 * local->quiescing = true;
+	 * flush_workqueue();
+	 *				queue_work(...);
+	 * local->suspended = true;
+	 * local->quiescing = false;
+	 *				worker starts running...
+	 */
+	if (local->suspended)
+		return false;
+
+	return true;
+}
+
+void ieee80211_init_tx_queue(struct ieee80211_sub_if_data *sdata,
+			     struct sta_info *sta,
+			     struct txq_info *txq, int tid);
+void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
+			 u16 transaction, u16 auth_alg, u16 status,
+			 const u8 *extra, size_t extra_len, const u8 *bssid,
+			 const u8 *da, const u8 *key, u8 key_len, u8 key_idx,
+			 u32 tx_flags);
+void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
+				    const u8 *bssid, u16 stype, u16 reason,
+				    bool send_frame, u8 *frame_buf);
+int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
+			     size_t buffer_len,
+			     struct ieee80211_scan_ies *ie_desc,
+			     const u8 *ie, size_t ie_len,
+			     u8 bands_used, u32 *rate_masks,
+			     struct cfg80211_chan_def *chandef);
+struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
+					  const u8 *src, const u8 *dst,
+					  u32 ratemask,
+					  struct ieee80211_channel *chan,
+					  const u8 *ssid, size_t ssid_len,
+					  const u8 *ie, size_t ie_len,
+					  bool directed);
+void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata,
+			      const u8 *src, const u8 *dst,
+			      const u8 *ssid, size_t ssid_len,
+			      const u8 *ie, size_t ie_len,
+			      u32 ratemask, bool directed, u32 tx_flags,
+			      struct ieee80211_channel *channel, bool scan);
+
+u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
+			    struct ieee802_11_elems *elems,
+			    enum ieee80211_band band, u32 *basic_rates);
+int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
+				 enum ieee80211_smps_mode smps_mode);
+int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
+				enum ieee80211_smps_mode smps_mode);
+void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
+void ieee80211_recalc_min_chandef(struct ieee80211_sub_if_data *sdata);
+
+size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
+u8 *ieee80211_ie_build_ht_cap(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
+			      u16 cap);
+u8 *ieee80211_ie_build_ht_oper(u8 *pos, struct ieee80211_sta_ht_cap *ht_cap,
+			       const struct cfg80211_chan_def *chandef,
+			       u16 prot_mode);
+u8 *ieee80211_ie_build_vht_cap(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
+			       u32 cap);
+u8 *ieee80211_ie_build_vht_oper(u8 *pos, struct ieee80211_sta_vht_cap *vht_cap,
+				const struct cfg80211_chan_def *chandef);
+int ieee80211_parse_bitrates(struct cfg80211_chan_def *chandef,
+			     const struct ieee80211_supported_band *sband,
+			     const u8 *srates, int srates_len, u32 *rates);
+int ieee80211_add_srates_ie(struct ieee80211_sub_if_data *sdata,
+			    struct sk_buff *skb, bool need_basic,
+			    enum ieee80211_band band);
+int ieee80211_add_ext_srates_ie(struct ieee80211_sub_if_data *sdata,
+				struct sk_buff *skb, bool need_basic,
+				enum ieee80211_band band);
+u8 *ieee80211_add_wmm_info_ie(u8 *buf, u8 qosinfo);
+
+/* channel management */
+void ieee80211_ht_oper_to_chandef(struct ieee80211_channel *control_chan,
+				  const struct ieee80211_ht_operation *ht_oper,
+				  struct cfg80211_chan_def *chandef);
+void ieee80211_vht_oper_to_chandef(struct ieee80211_channel *control_chan,
+				   const struct ieee80211_vht_operation *oper,
+				   struct cfg80211_chan_def *chandef);
+u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c);
+
+int __must_check
+ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata,
+			  const struct cfg80211_chan_def *chandef,
+			  enum ieee80211_chanctx_mode mode);
+int __must_check
+ieee80211_vif_reserve_chanctx(struct ieee80211_sub_if_data *sdata,
+			      const struct cfg80211_chan_def *chandef,
+			      enum ieee80211_chanctx_mode mode,
+			      bool radar_required);
+int __must_check
+ieee80211_vif_use_reserved_context(struct ieee80211_sub_if_data *sdata);
+int ieee80211_vif_unreserve_chanctx(struct ieee80211_sub_if_data *sdata);
+
+int __must_check
+ieee80211_vif_change_bandwidth(struct ieee80211_sub_if_data *sdata,
+			       const struct cfg80211_chan_def *chandef,
+			       u32 *changed);
+void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata);
+void ieee80211_vif_vlan_copy_chanctx(struct ieee80211_sub_if_data *sdata);
+void ieee80211_vif_copy_chanctx_to_vlans(struct ieee80211_sub_if_data *sdata,
+					 bool clear);
+int ieee80211_chanctx_refcount(struct ieee80211_local *local,
+			       struct ieee80211_chanctx *ctx);
+
+void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local,
+				   struct ieee80211_chanctx *chanctx);
+void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local,
+				      struct ieee80211_chanctx *ctx);
+bool ieee80211_is_radar_required(struct ieee80211_local *local);
+
+void ieee80211_dfs_cac_timer(unsigned long data);
+void ieee80211_dfs_cac_timer_work(struct work_struct *work);
+void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
+void ieee80211_dfs_radar_detected_work(struct work_struct *work);
+int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
+			      struct cfg80211_csa_settings *csa_settings);
+
+bool ieee80211_cs_valid(const struct ieee80211_cipher_scheme *cs);
+bool ieee80211_cs_list_valid(const struct ieee80211_cipher_scheme *cs, int n);
+const struct ieee80211_cipher_scheme *
+ieee80211_cs_get(struct ieee80211_local *local, u32 cipher,
+		 enum nl80211_iftype iftype);
+int ieee80211_cs_headroom(struct ieee80211_local *local,
+			  struct cfg80211_crypto_settings *crypto,
+			  enum nl80211_iftype iftype);
+void ieee80211_recalc_dtim(struct ieee80211_local *local,
+			   struct ieee80211_sub_if_data *sdata);
+int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
+				 const struct cfg80211_chan_def *chandef,
+				 enum ieee80211_chanctx_mode chanmode,
+				 u8 radar_detect);
+int ieee80211_max_num_channels(struct ieee80211_local *local);
+
+/* TDLS */
+int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
+			const u8 *peer, u8 action_code, u8 dialog_token,
+			u16 status_code, u32 peer_capability,
+			bool initiator, const u8 *extra_ies,
+			size_t extra_ies_len);
+int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev,
+			const u8 *peer, enum nl80211_tdls_operation oper);
+void ieee80211_tdls_peer_del_work(struct work_struct *wk);
+int ieee80211_tdls_channel_switch(struct wiphy *wiphy, struct net_device *dev,
+				  const u8 *addr, u8 oper_class,
+				  struct cfg80211_chan_def *chandef);
+void ieee80211_tdls_cancel_channel_switch(struct wiphy *wiphy,
+					  struct net_device *dev,
+					  const u8 *addr);
+void ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
+					   struct sk_buff *skb);
+
+extern const struct ethtool_ops ieee80211_ethtool_ops;
+
+#ifdef CONFIG_MAC80211_NOINLINE
+#define debug_noinline noinline
+#else
+#define debug_noinline
+#endif
+
+#endif /* IEEE80211_I_H */