ieee80211_i.h 41.0 KB
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/*
 * Copyright 2002-2005, Instant802 Networks, Inc.
 * Copyright 2005, Devicescape Software, Inc.
 * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
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 * Copyright 2007-2010	Johannes Berg <johannes@sipsolutions.net>
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 *
 * 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>
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#include <linux/etherdevice.h>
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#include <linux/leds.h>
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#include <net/ieee80211_radiotap.h>
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#include <net/cfg80211.h>
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#include <net/mac80211.h>
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#include "key.h"
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#include "sta_info.h"

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struct ieee80211_local;
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/* 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
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#define IEEE80211_ENCRYPT_TAILROOM 18
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/* 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

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#define TU_TO_EXP_TIME(x)	(jiffies + usecs_to_jiffies((x) * 1024))

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#define IEEE80211_DEFAULT_UAPSD_QUEUES \
	(IEEE80211_WMM_IE_STA_QOSINFO_AC_BK |	\
	 IEEE80211_WMM_IE_STA_QOSINFO_AC_BE |	\
	 IEEE80211_WMM_IE_STA_QOSINFO_AC_VI |	\
	 IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)

#define IEEE80211_DEFAULT_MAX_SP_LEN		\
	IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL

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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 */
};


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struct ieee80211_bss {
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	/* don't want to look up all the time */
	size_t ssid_len;
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	u8 ssid[IEEE80211_MAX_SSID_LEN];
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	u8 dtim_period;
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	bool wmm_used;
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	bool uapsd_supported;
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	unsigned long last_probe_resp;

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#ifdef CONFIG_MAC80211_MESH
	u8 *mesh_id;
	size_t mesh_id_len;
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	u8 *mesh_cfg;
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#endif
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#define IEEE80211_MAX_SUPP_RATES 32
	u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
	size_t supp_rates_len;

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	/*
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	 * During association, we save an ERP value from a probe response so
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	 * that we can feed ERP info to the driver when handling the
	 * association completes. these fields probably won't be up-to-date
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	 * otherwise, you probably don't want to use them.
	 */
	bool has_erp_value;
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	u8 erp_value;
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};

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static inline u8 *bss_mesh_cfg(struct ieee80211_bss *bss)
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{
#ifdef CONFIG_MAC80211_MESH
	return bss->mesh_cfg;
#endif
	return NULL;
}

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static inline u8 *bss_mesh_id(struct ieee80211_bss *bss)
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{
#ifdef CONFIG_MAC80211_MESH
	return bss->mesh_id;
#endif
	return NULL;
}

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static inline u8 bss_mesh_id_len(struct ieee80211_bss *bss)
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{
#ifdef CONFIG_MAC80211_MESH
	return bss->mesh_id_len;
#endif
	return 0;
}

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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)

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#define IEEE80211_TX_FRAGMENTED		BIT(0)
#define IEEE80211_TX_UNICAST		BIT(1)
#define IEEE80211_TX_PS_BUFFERED	BIT(2)

struct ieee80211_tx_data {
	struct sk_buff *skb;
	struct ieee80211_local *local;
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	struct ieee80211_key *key;

	struct ieee80211_channel *channel;

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	u16 ethertype;
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	unsigned int flags;
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};


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typedef unsigned __bitwise__ ieee80211_rx_result;
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#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)
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/**
 * enum ieee80211_packet_rx_flags - packet RX flags
 * @IEEE80211_RX_RA_MATCH: frame is destined to interface currently processed
 *	(incl. multicast frames)
 * @IEEE80211_RX_IN_SCAN: received while scanning
 * @IEEE80211_RX_FRAGMENTED: fragmented frame
 * @IEEE80211_RX_AMSDU: a-MSDU packet
 * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed
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 * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering
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 *
 * 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_IN_SCAN			= BIT(0),
	IEEE80211_RX_RA_MATCH			= BIT(1),
	IEEE80211_RX_FRAGMENTED			= BIT(2),
	IEEE80211_RX_AMSDU			= BIT(3),
	IEEE80211_RX_MALFORMED_ACTION_FRM	= BIT(4),
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	IEEE80211_RX_DEFERRED_RELEASE		= BIT(5),
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};

/**
 * enum ieee80211_rx_flags - RX data flags
 *
 * @IEEE80211_RX_CMNTR: received on cooked monitor already
 *
 * These flags are used across handling multiple interfaces
 * for a single frame.
 */
enum ieee80211_rx_flags {
	IEEE80211_RX_CMNTR		= BIT(0),
};
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struct ieee80211_rx_data {
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	struct sk_buff *skb;
	struct ieee80211_local *local;
	struct ieee80211_sub_if_data *sdata;
	struct sta_info *sta;
	struct ieee80211_key *key;
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	unsigned int flags;
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	int queue;
	u32 tkip_iv32;
	u16 tkip_iv16;
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};

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struct beacon_data {
	u8 *head, *tail;
	int head_len, tail_len;
	int dtim_period;
};

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struct ieee80211_if_ap {
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	struct beacon_data __rcu *beacon;
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	struct list_head vlans;

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	/* yes, this looks ugly, but guarantees that we can later use
	 * bitmap_empty :)
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	 * NB: don't touch this bitmap, use sta_info_{set,clear}_tim_bit */
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	u8 tim[sizeof(unsigned long) * BITS_TO_LONGS(IEEE80211_MAX_AID + 1)];
	struct sk_buff_head ps_bc_buf;
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	atomic_t num_sta_ps; /* number of stations in PS mode */
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	int dtim_count;
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	bool dtim_bc_mc;
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};

struct ieee80211_if_wds {
	struct sta_info *sta;
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	u8 remote_addr[ETH_ALEN];
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};

struct ieee80211_if_vlan {
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	struct list_head list;
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	/* used for all tx if the VLAN is configured to 4-addr mode */
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	struct sta_info __rcu *sta;
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};

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struct mesh_stats {
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	__u32 fwded_mcast;		/* Mesh forwarded multicast frames */
	__u32 fwded_unicast;		/* Mesh forwarded unicast frames */
	__u32 fwded_frames;		/* Mesh total forwarded frames */
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	__u32 dropped_frames_ttl;	/* Not transmitted since mesh_ttl == 0*/
	__u32 dropped_frames_no_route;	/* Not transmitted, no route found */
	atomic_t estab_plinks;
};

#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;
};

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enum ieee80211_work_type {
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	IEEE80211_WORK_ABORT,
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	IEEE80211_WORK_DIRECT_PROBE,
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	IEEE80211_WORK_AUTH,
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	IEEE80211_WORK_ASSOC_BEACON_WAIT,
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	IEEE80211_WORK_ASSOC,
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	IEEE80211_WORK_REMAIN_ON_CHANNEL,
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	IEEE80211_WORK_OFFCHANNEL_TX,
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};

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/**
 * enum work_done_result - indicates what to do after work was done
 *
 * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
 * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
 *	should be requeued.
 */
enum work_done_result {
	WORK_DONE_DESTROY,
	WORK_DONE_REQUEUE,
};

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struct ieee80211_work {
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	struct list_head list;

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	struct rcu_head rcu_head;

	struct ieee80211_sub_if_data *sdata;

	enum work_done_result (*done)(struct ieee80211_work *wk,
				      struct sk_buff *skb);

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	struct ieee80211_channel *chan;
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	enum nl80211_channel_type chan_type;
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	unsigned long timeout;
	enum ieee80211_work_type type;

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	u8 filter_ta[ETH_ALEN];

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	bool started;

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	union {
		struct {
			int tries;
			u16 algorithm, transaction;
			u8 ssid[IEEE80211_MAX_SSID_LEN];
			u8 ssid_len;
			u8 key[WLAN_KEY_LEN_WEP104];
			u8 key_len, key_idx;
			bool privacy;
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		} probe_auth;
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		struct {
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			struct cfg80211_bss *bss;
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			const u8 *supp_rates;
			const u8 *ht_information_ie;
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			enum ieee80211_smps_mode smps;
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			int tries;
			u16 capability;
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			u8 prev_bssid[ETH_ALEN];
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			u8 ssid[IEEE80211_MAX_SSID_LEN];
			u8 ssid_len;
			u8 supp_rates_len;
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			bool wmm_used, use_11n, uapsd_used;
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		} assoc;
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		struct {
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			u32 duration;
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		} remain;
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		struct {
			struct sk_buff *frame;
			u32 wait;
		} offchan_tx;
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	};
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	int ie_len;
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	/* must be last */
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	u8 ie[0];
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};

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/* flags used in struct ieee80211_if_managed.flags */
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enum ieee80211_sta_flags {
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	IEEE80211_STA_BEACON_POLL	= BIT(0),
	IEEE80211_STA_CONNECTION_POLL	= BIT(1),
	IEEE80211_STA_CONTROL_PORT	= BIT(2),
	IEEE80211_STA_DISABLE_11N	= BIT(4),
	IEEE80211_STA_CSA_RECEIVED	= BIT(5),
	IEEE80211_STA_MFP_ENABLED	= BIT(6),
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	IEEE80211_STA_UAPSD_ENABLED	= BIT(7),
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	IEEE80211_STA_NULLFUNC_ACKED	= BIT(8),
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	IEEE80211_STA_RESET_SIGNAL_AVE	= BIT(9),
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};

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struct ieee80211_if_managed {
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	struct timer_list timer;
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	struct timer_list conn_mon_timer;
	struct timer_list bcn_mon_timer;
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	struct timer_list chswitch_timer;
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	struct work_struct monitor_work;
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	struct work_struct chswitch_work;
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	struct work_struct beacon_connection_loss_work;
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	unsigned long beacon_timeout;
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	unsigned long probe_timeout;
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	int probe_send_count;
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	bool nullfunc_failed;
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	struct mutex mtx;
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	struct cfg80211_bss *associated;
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	u8 bssid[ETH_ALEN];
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	u16 aid;

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	unsigned long timers_running; /* used for quiesce/restart */
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	bool powersave; /* powersave requested for this iface */
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	enum ieee80211_smps_mode req_smps, /* requested smps mode */
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				 ap_smps, /* smps mode AP thinks we're in */
				 driver_smps_mode; /* smps mode request */

	struct work_struct request_smps_work;
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	unsigned int flags;
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	bool beacon_crc_valid;
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	u32 beacon_crc;

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	enum {
		IEEE80211_MFP_DISABLED,
		IEEE80211_MFP_OPTIONAL,
		IEEE80211_MFP_REQUIRED
	} mfp; /* management frame protection */

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	int wmm_last_param_set;
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	u8 use_4addr;
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	/* 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;

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	/*
	 * 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;

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	/*
	 * 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;
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};

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struct ieee80211_if_ibss {
	struct timer_list timer;

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	struct mutex mtx;

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	unsigned long last_scan_completed;
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	u32 basic_rates;

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	bool timer_running;

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	bool fixed_bssid;
	bool fixed_channel;
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	bool privacy;
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	u8 bssid[ETH_ALEN];
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	u8 ssid[IEEE80211_MAX_SSID_LEN];
	u8 ssid_len, ie_len;
	u8 *ie;
	struct ieee80211_channel *channel;
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	unsigned long ibss_join_req;
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	/* probe response/beacon for IBSS */
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	struct sk_buff __rcu *presp;
	struct sk_buff *skb;
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	enum {
		IEEE80211_IBSS_MLME_SEARCH,
		IEEE80211_IBSS_MLME_JOINED,
	} state;
};

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struct ieee80211_if_mesh {
	struct timer_list housekeeping_timer;
	struct timer_list mesh_path_timer;
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	struct timer_list mesh_path_root_timer;
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	unsigned long timers_running;

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	unsigned long wrkq_flags;
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	u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
	size_t mesh_id_len;
	/* Active Path Selection Protocol Identifier */
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	u8 mesh_pp_id;
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	/* Active Path Selection Metric Identifier */
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	u8 mesh_pm_id;
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	/* Congestion Control Mode Identifier */
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	u8 mesh_cc_id;
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	/* Synchronization Protocol Identifier */
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	u8 mesh_sp_id;
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	/* Authentication Protocol Identifier */
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	u8 mesh_auth_id;
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	/* Local mesh Sequence Number */
	u32 sn;
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	/* Last used PREQ ID */
	u32 preq_id;
	atomic_t mpaths;
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	/* Timestamp of last SN update */
	unsigned long last_sn_update;
	/* Timestamp of last SN sent */
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	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;
	u32 mesh_seqnum;
	bool accepting_plinks;
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	const u8 *ie;
	u8 ie_len;
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	enum {
		IEEE80211_MESH_SEC_NONE = 0x0,
		IEEE80211_MESH_SEC_AUTHED = 0x1,
		IEEE80211_MESH_SEC_SECURED = 0x2,
	} security;
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};
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#ifdef CONFIG_MAC80211_MESH
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#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name)	\
	do { (msh)->mshstats.name++; } while (0)
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#else
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#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
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	do { } while (0)
#endif
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/**
 * 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.
 */
enum ieee80211_sub_if_data_flags {
	IEEE80211_SDATA_ALLMULTI		= BIT(0),
	IEEE80211_SDATA_PROMISC			= BIT(1),
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	IEEE80211_SDATA_OPERATING_GMODE		= BIT(2),
	IEEE80211_SDATA_DONT_BRIDGE_PACKETS	= BIT(3),
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};

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/**
 * 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
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 * @SDATA_STATE_OFFCHANNEL: This interface is currently in offchannel
 *	mode, so queues are stopped
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 */
enum ieee80211_sdata_state_bits {
	SDATA_STATE_RUNNING,
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	SDATA_STATE_OFFCHANNEL,
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};

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struct ieee80211_sub_if_data {
	struct list_head list;

	struct wireless_dev wdev;

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	/* keys */
	struct list_head key_list;

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	struct net_device *dev;
	struct ieee80211_local *local;

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	unsigned int flags;
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	unsigned long state;

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	int drop_unencrypted;

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	char name[IFNAMSIZ];

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	/*
	 * keep track of whether the HT opmode (stored in
	 * vif.bss_info.ht_operation_mode) is valid.
	 */
	bool ht_opmode_valid;

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	/* to detect idle changes */
	bool old_idle;

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	/* Fragment table for host-based reassembly */
	struct ieee80211_fragment_entry	fragments[IEEE80211_FRAGMENT_MAX];
	unsigned int fragment_next;

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	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;
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	u16 sequence_number;
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	__be16 control_port_protocol;
	bool control_port_no_encrypt;
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	struct work_struct work;
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	struct sk_buff_head skb_queue;

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	bool arp_filter_state;

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	/*
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	 * AP this belongs to: self in AP mode and
	 * corresponding AP in VLAN mode, NULL for
	 * all others (might be needed later in IBSS)
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	 */
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	struct ieee80211_if_ap *bss;

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	/* bitmap of allowed (non-MCS) rate indexes for rate control */
	u32 rc_rateidx_mask[IEEE80211_NUM_BANDS];
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	union {
		struct ieee80211_if_ap ap;
		struct ieee80211_if_wds wds;
		struct ieee80211_if_vlan vlan;
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		struct ieee80211_if_managed mgd;
		struct ieee80211_if_ibss ibss;
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		struct ieee80211_if_mesh mesh;
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		u32 mntr_flags;
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	} u;
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#ifdef CONFIG_MAC80211_DEBUGFS
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	struct {
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		struct dentry *dir;
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		struct dentry *subdir_stations;
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		struct dentry *default_unicast_key;
		struct dentry *default_multicast_key;
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		struct dentry *default_mgmt_key;
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	} debugfs;
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#endif
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	/* must be last, dynamically sized area in this! */
	struct ieee80211_vif vif;
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};

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static inline
struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
{
	return container_of(p, struct ieee80211_sub_if_data, vif);
}

624 625 626 627 628 629
enum sdata_queue_type {
	IEEE80211_SDATA_QUEUE_TYPE_FRAME	= 0,
	IEEE80211_SDATA_QUEUE_AGG_START		= 1,
	IEEE80211_SDATA_QUEUE_AGG_STOP		= 2,
};

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enum {
	IEEE80211_RX_MSG	= 1,
	IEEE80211_TX_STATUS_MSG	= 2,
};

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enum queue_stop_reason {
	IEEE80211_QUEUE_STOP_REASON_DRIVER,
637
	IEEE80211_QUEUE_STOP_REASON_PS,
638 639
	IEEE80211_QUEUE_STOP_REASON_CSA,
	IEEE80211_QUEUE_STOP_REASON_AGGREGATION,
640
	IEEE80211_QUEUE_STOP_REASON_SUSPEND,
641
	IEEE80211_QUEUE_STOP_REASON_SKB_ADD,
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};

644
#ifdef CONFIG_MAC80211_LEDS
645 646 647 648 649 650 651 652
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;
653 654
	unsigned int active, want;
	bool running;
655
};
656
#endif
657

658 659 660 661 662 663 664
/**
 * 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
665 666 667 668
 * @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.
669
 */
670 671
enum {
	SCAN_SW_SCANNING,
672
	SCAN_HW_SCANNING,
673 674
	SCAN_COMPLETED,
	SCAN_ABORTED,
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};

/**
 * 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_LEAVE_OPER_CHANNEL: Leave the operating channel, notify the AP
 *	about us leaving the channel and stop all associated STA interfaces
 * @SCAN_ENTER_OPER_CHANNEL: Enter the operating channel again, notify the
 *	AP about us being back and restart all associated STA interfaces
 */
enum mac80211_scan_state {
	SCAN_DECISION,
	SCAN_SET_CHANNEL,
	SCAN_SEND_PROBE,
	SCAN_LEAVE_OPER_CHANNEL,
	SCAN_ENTER_OPER_CHANNEL,
696 697
};

698 699 700 701 702 703 704 705
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;

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	/*
	 * work stuff, potentially off-channel (in the future)
	 */
	struct list_head work_list;
	struct timer_list work_timer;
	struct work_struct work_work;
	struct sk_buff_head work_skb_queue;

714 715 716 717 718 719
	/*
	 * private workqueue to mac80211. mac80211 makes this accessible
	 * via ieee80211_queue_work()
	 */
	struct workqueue_struct *workqueue;

720
	unsigned long queue_stop_reasons[IEEE80211_MAX_QUEUES];
721
	/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
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	spinlock_t queue_stop_reason_lock;
723

724
	int open_count;
725
	int monitors, cooked_mntrs;
726
	/* number of interfaces with corresponding FIF_ flags */
727 728 729
	int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
	    fif_probe_req;
	int probe_req_reg;
730
	unsigned int filter_flags; /* FIF_* */
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	bool wiphy_ciphers_allocated;

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	/* protects the aggregated multicast list and filter calls */
	spinlock_t filter_lock;

737 738 739
	/* used for uploading changed mc list */
	struct work_struct reconfig_filter;

740 741 742
	/* used to reconfigure hardware SM PS */
	struct work_struct recalc_smps;

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	/* aggregated multicast list */
744
	struct netdev_hw_addr_list mc_list;
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746
	bool tim_in_locked_section; /* see ieee80211_beacon_get() */
747 748 749 750 751 752 753 754 755

	/*
	 * 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;

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	/*
	 * 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;

764 765 766 767 768 769
	/*
	 * quiescing is true during the suspend process _only_ to
	 * ease timer cancelling etc.
	 */
	bool quiescing;

770 771 772
	/* device is started */
	bool started;

773 774 775
	/* wowlan is enabled -- don't reconfig on resume */
	bool wowlan;

776
	int tx_headroom; /* required headroom for hardware/radiotap */
777 778 779 780 781 782 783 784 785 786

	/* 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;

787 788 789 790 791 792 793 794 795
	/*
	 * Internal FIFO queue which is shared between multiple rx path
	 * stages. Its main task is to provide a serialization mechanism,
	 * so all rx handlers can enjoy having exclusive access to their
	 * private data structures.
	 */
	struct sk_buff_head rx_skb_queue;
	bool running_rx_handler;	/* protected by rx_skb_queue.lock */

796 797
	/* Station data */
	/*
798 799 800 801
	 * The mutex only protects the list and counter,
	 * reads are done in RCU.
	 * Additionally, the lock protects the hash table,
	 * the pending list and each BSS's TIM bitmap.
802
	 */
803
	struct mutex sta_mtx;
804 805
	spinlock_t sta_lock;
	unsigned long num_sta;
806
	struct list_head sta_list, sta_pending_list;
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	struct sta_info __rcu *sta_hash[STA_HASH_SIZE];
808
	struct timer_list sta_cleanup;
809
	struct work_struct sta_finish_work;
810
	int sta_generation;
811

812
	struct sk_buff_head pending[IEEE80211_MAX_QUEUES];
813 814
	struct tasklet_struct tx_pending_tasklet;

815
	atomic_t agg_queue_stop[IEEE80211_MAX_QUEUES];
816

817 818
	/* number of interfaces with corresponding IFF_ flags */
	atomic_t iff_allmultis, iff_promiscs;
819 820 821

	struct rate_control_ref *rate_ctrl;

822 823
	struct crypto_cipher *wep_tx_tfm;
	struct crypto_cipher *wep_rx_tfm;
824 825
	u32 wep_iv;

826
	/* see iface.c */
827
	struct list_head interfaces;
828
	struct mutex iflist_mtx;
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	/*
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	 * Key mutex, protects sdata's key_list and sta_info's
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	 * key pointers (write access, they're RCU.)
	 */
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	struct mutex key_mtx;
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836 837
	/* mutex for scan and work locking */
	struct mutex mtx;
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839
	/* Scanning and BSS list */
840
	unsigned long scanning;
841
	struct cfg80211_ssid scan_ssid;
842
	struct cfg80211_scan_request *int_scan_req;
843
	struct cfg80211_scan_request *scan_req, *hw_scan_req;
844
	struct ieee80211_channel *scan_channel;
845
	enum ieee80211_band hw_scan_band;
846
	int scan_channel_idx;
847
	int scan_ies_len;
848

849 850
	bool sched_scanning;
	struct ieee80211_sched_scan_ies sched_scan_ies;
851
	struct work_struct sched_scan_stopped_work;
852

853
	unsigned long leave_oper_channel_time;
854
	enum mac80211_scan_state next_scan_state;
855
	struct delayed_work scan_work;
856
	struct ieee80211_sub_if_data *scan_sdata;
857
	enum nl80211_channel_type _oper_channel_type;
858
	struct ieee80211_channel *oper_channel, *csa_channel;
859

860 861 862 863
	/* Temporary remain-on-channel for off-channel operations */
	struct ieee80211_channel *tmp_channel;
	enum nl80211_channel_type tmp_channel_type;

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	/* 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
	int tx_led_counter, rx_led_counter;
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	struct led_trigger *tx_led, *rx_led, *assoc_led, *radio_led;
879
	struct tpt_led_trigger *tpt_led_trigger;
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	char tx_led_name[32], rx_led_name[32],
	     assoc_led_name[32], radio_led_name[32];
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#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_unencrypted;
	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 rx_handlers_drop_passive_scan;
	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
				*/
	int wifi_wme_noack_test;
	unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
916

917 918 919 920 921 922 923 924 925 926 927 928 929 930
	/*
	 * 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;

931
	bool pspolling;
932
	bool offchannel_ps_enabled;
933 934 935 936 937
	/*
	 * 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;
938 939 940
	struct work_struct dynamic_ps_enable_work;
	struct work_struct dynamic_ps_disable_work;
	struct timer_list dynamic_ps_timer;
941
	struct notifier_block network_latency_notifier;
942
	struct notifier_block ifa_notifier;
943

944 945 946 947 948
	/*
	 * The dynamic ps timeout configured from user space via WEXT -
	 * this will override whatever chosen by mac80211 internally.
	 */
	int dynamic_ps_forced_timeout;
949 950
	int dynamic_ps_user_timeout;
	bool disable_dynamic_ps;
951

952
	int user_power_level; /* in dBm */
953
	int power_constr_level; /* in dBm */
954

955 956
	enum ieee80211_smps_mode smps_mode;

957 958
	struct work_struct restart_work;

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#ifdef CONFIG_MAC80211_DEBUGFS
	struct local_debugfsdentries {
961
		struct dentry *rcdir;
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		struct dentry *keys;
	} debugfs;
#endif
965

966 967
	struct ieee80211_channel *hw_roc_channel;
	struct net_device *hw_roc_dev;
968
	struct sk_buff *hw_roc_skb, *hw_roc_skb_for_status;
969 970 971 972
	struct work_struct hw_roc_start, hw_roc_done;
	enum nl80211_channel_type hw_roc_channel_type;
	unsigned int hw_roc_duration;
	u32 hw_roc_cookie;
973
	bool hw_roc_for_tx;
974
	unsigned long hw_offchan_tx_cookie;
975

976 977 978 979
	/* dummy netdev for use w/ NAPI */
	struct net_device napi_dev;

	struct napi_struct napi;
980 981
};

982 983 984 985 986 987
static inline struct ieee80211_sub_if_data *
IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
{
	return netdev_priv(dev);
}

988
/* this struct represents 802.11n's RA/TID combination */
989 990 991 992 993
struct ieee80211_ra_tid {
	u8 ra[ETH_ALEN];
	u16 tid;
};

994 995
/* Parsed Information Elements */
struct ieee802_11_elems {
996 997 998
	u8 *ie_start;
	size_t total_len;

999 1000 1001 1002 1003 1004
	/* pointers to IEs */
	u8 *ssid;
	u8 *supp_rates;
	u8 *fh_params;
	u8 *ds_params;
	u8 *cf_params;
1005
	struct ieee80211_tim_ie *tim;
1006 1007 1008 1009 1010 1011 1012 1013
	u8 *ibss_params;
	u8 *challenge;
	u8 *wpa;
	u8 *rsn;
	u8 *erp_info;
	u8 *ext_supp_rates;
	u8 *wmm_info;
	u8 *wmm_param;
1014
	struct ieee80211_ht_cap *ht_cap_elem;
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	struct ieee80211_ht_info *ht_info_elem;
1016
	struct ieee80211_meshconf_ie *mesh_config;
1017 1018 1019 1020 1021
	u8 *mesh_id;
	u8 *peer_link;
	u8 *preq;
	u8 *prep;
	u8 *perr;
1022
	struct ieee80211_rann_ie *rann;
1023 1024 1025 1026
	u8 *ch_switch_elem;
	u8 *country_elem;
	u8 *pwr_constr_elem;
	u8 *quiet_elem; 	/* first quite element */
1027
	u8 *timeout_int;
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048

	/* length of them, respectively */
	u8 ssid_len;
	u8 supp_rates_len;
	u8 fh_params_len;
	u8 ds_params_len;
	u8 cf_params_len;
	u8 tim_len;
	u8 ibss_params_len;
	u8 challenge_len;
	u8 wpa_len;
	u8 rsn_len;
	u8 erp_info_len;
	u8 ext_supp_rates_len;
	u8 wmm_info_len;
	u8 wmm_param_len;
	u8 mesh_id_len;
	u8 peer_link_len;
	u8 preq_len;
	u8 prep_len;
	u8 perr_len;
1049 1050 1051 1052 1053
	u8 ch_switch_elem_len;
	u8 country_elem_len;
	u8 pwr_constr_elem_len;
	u8 quiet_elem_len;
	u8 num_of_quiet_elem;	/* can be more the one */
1054
	u8 timeout_int_len;
1055 1056
};

1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069
static inline struct ieee80211_local *hw_to_local(
	struct ieee80211_hw *hw)
{
	return container_of(hw, struct ieee80211_local, hw);
}

static inline struct ieee80211_hw *local_to_hw(
	struct ieee80211_local *local)
{
	return &local->hw;
}


1070 1071 1072 1073 1074 1075 1076
static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
{
	return compare_ether_addr(raddr, addr) == 0 ||
	       is_broadcast_ether_addr(raddr);
}


1077
int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
1078
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
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void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
				      u32 changed);
1081
void ieee80211_configure_filter(struct ieee80211_local *local);
1082
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
1083

1084
/* STA code */
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void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
1086 1087 1088 1089 1090
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,
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			 struct cfg80211_deauth_request *req,
			 void *cookie);
1093
int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
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			   struct cfg80211_disassoc_request *req,
			   void *cookie);
1096 1097
void ieee80211_send_pspoll(struct ieee80211_local *local,
			   struct ieee80211_sub_if_data *sdata);
1098 1099 1100
void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
int ieee80211_max_network_latency(struct notifier_block *nb,
				  unsigned long data, void *dummy);
1101
int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
1102 1103
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
				      struct ieee80211_channel_sw_ie *sw_elem,
1104 1105
				      struct ieee80211_bss *bss,
				      u64 timestamp);
1106 1107
void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
1108 1109 1110
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);
1111
void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata);
1112
void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata);
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1114 1115 1116 1117
/* IBSS code */
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
1118 1119
					u8 *bssid, u8 *addr, u32 supp_rates,
					gfp_t gfp);
1120 1121 1122
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);
1123 1124
void ieee80211_ibss_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
1125 1126 1127 1128 1129 1130 1131 1132
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);

/* 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);
1133

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/* scan/BSS handling */
1135
void ieee80211_scan_work(struct work_struct *work);
1136
int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
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				    const u8 *ssid, u8 ssid_len,
				    struct ieee80211_channel *chan);
1139
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
1140
			   struct cfg80211_scan_request *req);
1141
void ieee80211_scan_cancel(struct ieee80211_local *local);
1142
ieee80211_rx_result
1143
ieee80211_scan_rx(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
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1145
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
1146
struct ieee80211_bss *
1147 1148 1149 1150 1151
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,
1152 1153
			  struct ieee80211_channel *channel,
			  bool beacon);
1154
struct ieee80211_bss *
1155 1156
ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
		     u8 *ssid, u8 ssid_len);
1157
void ieee80211_rx_bss_put(struct ieee80211_local *local,
1158
			  struct ieee80211_bss *bss);
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1160 1161 1162
/* scheduled scan handling */
int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
				       struct cfg80211_sched_scan_request *req);
1163 1164
int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata);
void ieee80211_sched_scan_stopped_work(struct work_struct *work);
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1166
/* off-channel helpers */
1167 1168 1169 1170 1171
bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local);
void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local,
					bool tell_ap);
void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local,
				    bool offchannel_ps_enable);
1172
void ieee80211_offchannel_return(struct ieee80211_local *local,
1173 1174
				 bool enable_beaconing,
				 bool offchannel_ps_disable);
1175
void ieee80211_hw_roc_setup(struct ieee80211_local *local);
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1177
/* interface handling */
1178 1179
int ieee80211_iface_init(void);
void ieee80211_iface_exit(void);
1180
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
1181
		     struct net_device **new_dev, enum nl80211_iftype type,
1182
		     struct vif_params *params);
1183
int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
1184
			     enum nl80211_iftype type);
1185
void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
1186
void ieee80211_remove_interfaces(struct ieee80211_local *local);
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u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
void ieee80211_recalc_idle(struct ieee80211_local *local);
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void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
				    const int offset);
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static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
{
1194
	return test_bit(SDATA_STATE_RUNNING, &sdata->state);
1195 1196
}

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/* tx handling */
void ieee80211_clear_tx_pending(struct ieee80211_local *local);
void ieee80211_tx_pending(unsigned long data);
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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);
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/*
 * radiotap header for status frames
 */
struct ieee80211_tx_status_rtap_hdr {
	struct ieee80211_radiotap_header hdr;
	u8 rate;
	u8 padding_for_rate;
	__le16 tx_flags;
	u8 data_retries;
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} __packed;
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/* HT */
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void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_supported_band *sband,
				       struct ieee80211_ht_cap *ht_cap_ie,
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				       struct ieee80211_sta_ht_cap *ht_cap);
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void ieee80211_send_bar(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid, u16 ssn);
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void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
			  const u8 *da, u16 tid,
			  u16 initiator, u16 reason_code);
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int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
			       enum ieee80211_smps_mode smps, const u8 *da,
			       const u8 *bssid);
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void ieee80211_request_smps_work(struct work_struct *work);
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void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
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				     u16 initiator, u16 reason, bool stop);
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void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
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				    u16 initiator, u16 reason, bool stop);
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);
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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);

1247
int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
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				   enum ieee80211_back_parties initiator,
				   bool tx);
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int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
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				    enum ieee80211_back_parties initiator,
				    bool tx);
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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);
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void ieee80211_ba_session_work(struct work_struct *work);
void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid);
1257
void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid);
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/* Spectrum management */
void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
				       struct ieee80211_mgmt *mgmt,
				       size_t len);

1264 1265
/* Suspend/resume and hw reconfiguration */
int ieee80211_reconfig(struct ieee80211_local *local);
1266
void ieee80211_stop_device(struct ieee80211_local *local);
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#ifdef CONFIG_PM
1269 1270
int __ieee80211_suspend(struct ieee80211_hw *hw,
			struct cfg80211_wowlan *wowlan);
1271 1272 1273

static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
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	struct ieee80211_local *local = hw_to_local(hw);

	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
		"%s: resume with hardware scan still in progress\n",
		wiphy_name(hw->wiphy));

1280 1281
	return ieee80211_reconfig(hw_to_local(hw));
}
1282
#else
1283 1284
static inline int __ieee80211_suspend(struct ieee80211_hw *hw,
				      struct cfg80211_wowlan *wowlan)
1285 1286 1287
{
	return 0;
}
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static inline int __ieee80211_resume(struct ieee80211_hw *hw)
{
	return 0;
}
#endif
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/* utility functions/constants */
extern void *mac80211_wiphy_privid; /* for wiphy privid */
1297
u8 *ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len,
1298
			enum nl80211_iftype type);
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int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
			     int rate, int erp, int short_preamble);
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void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
1302 1303
				     struct ieee80211_hdr *hdr, const u8 *tsc,
				     gfp_t gfp);
1304
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
1305
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb);
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void ieee802_11_parse_elems(u8 *start, size_t len,
			    struct ieee802_11_elems *elems);
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u32 ieee802_11_parse_elems_crc(u8 *start, size_t len,
			       struct ieee802_11_elems *elems,
			       u64 filter, u32 crc);
1311
u32 ieee80211_mandatory_rates(struct ieee80211_local *local,
1312
			      enum ieee80211_band band);
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1314 1315 1316
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);
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void ieee80211_send_nullfunc(struct ieee80211_local *local,
			     struct ieee80211_sub_if_data *sdata,
			     int powersave);
1320 1321
void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
			     struct ieee80211_hdr *hdr);
1322
void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1323
			     struct ieee80211_hdr *hdr, bool ack);
1324
void ieee80211_beacon_connection_loss_work(struct work_struct *work);
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void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
				     enum queue_stop_reason reason);
void ieee80211_stop_queues_by_reason(struct ieee80211_hw *hw,
				     enum queue_stop_reason reason);
1330 1331 1332 1333
void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
				    enum queue_stop_reason reason);
void ieee80211_stop_queue_by_reason(struct ieee80211_hw *hw, int queue,
				    enum queue_stop_reason reason);
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void ieee80211_add_pending_skb(struct ieee80211_local *local,
			       struct sk_buff *skb);
int ieee80211_add_pending_skbs(struct ieee80211_local *local,
			       struct sk_buff_head *skbs);
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int ieee80211_add_pending_skbs_fn(struct ieee80211_local *local,
				  struct sk_buff_head *skbs,
				  void (*fn)(void *data), void *data);
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void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
			 u16 transaction, u16 auth_alg,
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			 u8 *extra, size_t extra_len, const u8 *bssid,
			 const u8 *key, u8 key_len, u8 key_idx);
1346
int ieee80211_build_preq_ies(struct ieee80211_local *local, u8 *buffer,
1347
			     const u8 *ie, size_t ie_len,
1348 1349
			     enum ieee80211_band band, u32 rate_mask,
			     u8 channel);
1350 1351 1352 1353
struct sk_buff *ieee80211_build_probe_req(struct ieee80211_sub_if_data *sdata,
					  u8 *dst,
					  const u8 *ssid, size_t ssid_len,
					  const u8 *ie, size_t ie_len);
1354
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
1355 1356
			      const u8 *ssid, size_t ssid_len,
			      const u8 *ie, size_t ie_len);
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void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
				  const size_t supp_rates_len,
				  const u8 *supp_rates);
u32 ieee80211_sta_get_rates(struct ieee80211_local *local,
			    struct ieee802_11_elems *elems,
			    enum ieee80211_band band);
1364 1365
int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
			     enum ieee80211_smps_mode smps_mode);
1366
void ieee80211_recalc_smps(struct ieee80211_local *local);
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1368 1369 1370 1371
size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
			  const u8 *ids, int n_ids, size_t offset);
size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);

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/* internal work items */
void ieee80211_work_init(struct ieee80211_local *local);
void ieee80211_add_work(struct ieee80211_work *wk);
void free_work(struct ieee80211_work *wk);
void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
					   struct sk_buff *skb);
1379 1380 1381 1382 1383 1384
int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
				   struct ieee80211_channel *chan,
				   enum nl80211_channel_type channel_type,
				   unsigned int duration, u64 *cookie);
int ieee80211_wk_cancel_remain_on_channel(
	struct ieee80211_sub_if_data *sdata, u64 cookie);
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/* channel management */
enum ieee80211_chan_mode {
	CHAN_MODE_UNDEFINED,
	CHAN_MODE_HOPPING,
	CHAN_MODE_FIXED,
};

enum ieee80211_chan_mode
ieee80211_get_channel_mode(struct ieee80211_local *local,
			   struct ieee80211_sub_if_data *ignore);
1396 1397 1398
bool ieee80211_set_channel_type(struct ieee80211_local *local,
				struct ieee80211_sub_if_data *sdata,
				enum nl80211_channel_type chantype);
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1400
#ifdef CONFIG_MAC80211_NOINLINE
1401 1402 1403 1404 1405
#define debug_noinline noinline
#else
#define debug_noinline
#endif

1406
#endif /* IEEE80211_I_H */