cregit-Linux how code gets into the kernel

Release 4.8 net/mac80211/ieee80211_i.h

Directory: net/mac80211
/*
 * 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 <net/fq.h>
#include "key.h"
#include "sta_info.h"
#include "debug.h"

extern const struct cfg80211_ops mac80211_config_ops;

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 {
	
struct sk_buff_head skb_list;
	
unsigned long first_frag_time;
	
u16 seq;
	
u16 extra_len;
	
u16 last_frag;
	
u8 rx_queue;
	
bool check_sequential_pn; /* needed for CCMP/GCMP */
	
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_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_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().
 *
 * 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),
};


struct ieee80211_rx_data {
	
struct napi_struct *napi;
	
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 ieee80211_sub_if_data *sdata;

	
struct ieee80211_channel *chan;

	



bool started, abort, hw_begun, notified;
	
bool on_channel;

	
unsigned long 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;
};

DECLARE_EWMA(beacon_signal, 16, 4)


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;

	
struct ewma_beacon_signal 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;

	/* Number of times beacon loss was invoked. */
	
unsigned int beacon_loss_count;

	/*
         * 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;
	
bool tdls_wider_bw_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;

	
struct mesh_table *mesh_paths;
	
struct mesh_table *mpp_paths; /* Store paths for MPP&MAP */
	
int mesh_paths_generation;
	
int mpp_paths_generation;
};

#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_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_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,
	
IEEE80211_TXQ_NO_AMSDU,
};

/**
 * struct txq_info - per tid queue
 *
 * @tin: contains packets split into multiple flows
 * @def_flow: used as a fallback flow when a packet destined to @tin hashes to
 *      a fq_flow which is already owned by a different tin
 * @def_cvars: codel vars for @def_flow
 */

struct txq_info {
	
struct fq_tin tin;
	
struct fq_flow def_flow;
	
struct codel_vars def_cvars;
	
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 num_tx_queued;
	
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[NUM_NL80211_BANDS];

	
bool rc_has_mcs_mask[NUM_NL80211_BANDS];
	
u8  rc_rateidx_mcs_mask[NUM_NL80211_BANDS][IEEE80211_HT_MCS_MASK_LEN];

	
bool rc_has_vht_mcs_mask[NUM_NL80211_BANDS];
	
u16 rc_rateidx_vht_mcs_mask[NUM_NL80211_BANDS][NL80211_VHT_NSS_MAX];

	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); }

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static inline void sdata_lock(struct ieee80211_sub_if_data *sdata) __acquires(&sdata->wdev.mtx

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) { mutex_lock(&sdata->wdev.mtx); __acquire(&sdata->wdev.mtx); }
static inline void sdata_unlock(struct ieee80211_sub_if_data *sdata) __releases(&sdata->wdev.mtx

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) { 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); }

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static inline enum nl80211_band ieee80211_get_sdata_band(struct ieee80211_sub_if_data *sdata) { enum nl80211_band band = NL80211_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; }

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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; } }

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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; }

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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, }; 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 { char name[32]; const struct ieee80211_tpt_blink *blink_table; unsigned int blink_table_len; struct timer_list timer; unsigned