[linux-2.6-block.git] / net / wireless / core.h

/*
 * Wireless configuration interface internals.
 *
 * Copyright 2006-2010	Johannes Berg <johannes@sipsolutions.net>
 */
#ifndef __NET_WIRELESS_CORE_H
#define __NET_WIRELESS_CORE_H
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/kref.h>
#include <linux/rbtree.h>
#include <linux/debugfs.h>
#include <linux/rfkill.h>
#include <linux/workqueue.h>
#include <linux/rtnetlink.h>
#include <net/genetlink.h>
#include <net/cfg80211.h>
#include "reg.h"


#define WIPHY_IDX_INVALID	-1

struct cfg80211_registered_device {
	const struct cfg80211_ops *ops;
	struct list_head list;
	/* we hold this mutex during any call so that
	 * we cannot do multiple calls at once, and also
	 * to avoid the deregister call to proceed while
	 * any call is in progress */
	struct mutex mtx;

	/* rfkill support */
	struct rfkill_ops rfkill_ops;
	struct rfkill *rfkill;
	struct work_struct rfkill_sync;

	/* ISO / IEC 3166 alpha2 for which this device is receiving
	 * country IEs on, this can help disregard country IEs from APs
	 * on the same alpha2 quickly. The alpha2 may differ from
	 * cfg80211_regdomain's alpha2 when an intersection has occurred.
	 * If the AP is reconfigured this can also be used to tell us if
	 * the country on the country IE changed. */
	char country_ie_alpha2[2];

	/* If a Country IE has been received this tells us the environment
	 * which its telling us its in. This defaults to ENVIRON_ANY */
	enum environment_cap env;

	/* wiphy index, internal only */
	int wiphy_idx;

	/* associated wireless interfaces */
	struct mutex devlist_mtx;
	/* protected by devlist_mtx or RCU */
	struct list_head wdev_list;
	int devlist_generation, wdev_id;
	int opencount; /* also protected by devlist_mtx */
	wait_queue_head_t dev_wait;

	struct list_head beacon_registrations;
	spinlock_t beacon_registrations_lock;

	/* protected by RTNL only */
	int num_running_ifaces;
	int num_running_monitor_ifaces;

	/* BSSes/scanning */
	spinlock_t bss_lock;
	struct list_head bss_list;
	struct rb_root bss_tree;
	u32 bss_generation;
	struct cfg80211_scan_request *scan_req; /* protected by RTNL */
	struct cfg80211_sched_scan_request *sched_scan_req;
	unsigned long suspend_at;
	struct work_struct scan_done_wk;
	struct work_struct sched_scan_results_wk;

	struct mutex sched_scan_mtx;

#ifdef CONFIG_NL80211_TESTMODE
	struct genl_info *testmode_info;
#endif

	struct work_struct conn_work;
	struct work_struct event_work;

	struct cfg80211_wowlan *wowlan;

	/* must be last because of the way we do wiphy_priv(),
	 * and it should at least be aligned to NETDEV_ALIGN */
	struct wiphy wiphy __aligned(NETDEV_ALIGN);
};

static inline
struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
{
	BUG_ON(!wiphy);
	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
}

static inline void
cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
{
	int i;

	if (!rdev->wowlan)
		return;
	for (i = 0; i < rdev->wowlan->n_patterns; i++)
		kfree(rdev->wowlan->patterns[i].mask);
	kfree(rdev->wowlan->patterns);
	kfree(rdev->wowlan);
}

extern struct workqueue_struct *cfg80211_wq;
extern struct mutex cfg80211_mutex;
extern struct list_head cfg80211_rdev_list;
extern int cfg80211_rdev_list_generation;

static inline void assert_cfg80211_lock(void)
{
	lockdep_assert_held(&cfg80211_mutex);
}

struct cfg80211_internal_bss {
	struct list_head list;
	struct rb_node rbn;
	unsigned long ts;
	struct kref ref;
	atomic_t hold;

	/* must be last because of priv member */
	struct cfg80211_bss pub;
};

static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
{
	return container_of(pub, struct cfg80211_internal_bss, pub);
}

static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
{
	atomic_inc(&bss->hold);
}

static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
{
	int r = atomic_dec_return(&bss->hold);
	WARN_ON(r < 0);
}


struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
int get_wiphy_idx(struct wiphy *wiphy);

/* requires cfg80211_rdev_mutex to be held! */
struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);

/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
extern struct cfg80211_registered_device *
cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);

int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
			  struct net *net);

static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
{
	mutex_lock(&rdev->mtx);
}

static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
{
	BUG_ON(IS_ERR(rdev) || !rdev);
	mutex_unlock(&rdev->mtx);
}

static inline void wdev_lock(struct wireless_dev *wdev)
	__acquires(wdev)
{
	mutex_lock(&wdev->mtx);
	__acquire(wdev->mtx);
}

static inline void wdev_unlock(struct wireless_dev *wdev)
	__releases(wdev)
{
	__release(wdev->mtx);
	mutex_unlock(&wdev->mtx);
}

#define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)

static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
{
	ASSERT_RTNL();

	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	       rdev->num_running_ifaces > 0;
}

enum cfg80211_event_type {
	EVENT_CONNECT_RESULT,
	EVENT_ROAMED,
	EVENT_DISCONNECTED,
	EVENT_IBSS_JOINED,
};

struct cfg80211_event {
	struct list_head list;
	enum cfg80211_event_type type;

	union {
		struct {
			u8 bssid[ETH_ALEN];
			const u8 *req_ie;
			const u8 *resp_ie;
			size_t req_ie_len;
			size_t resp_ie_len;
			u16 status;
		} cr;
		struct {
			const u8 *req_ie;
			const u8 *resp_ie;
			size_t req_ie_len;
			size_t resp_ie_len;
			struct cfg80211_bss *bss;
		} rm;
		struct {
			const u8 *ie;
			size_t ie_len;
			u16 reason;
		} dc;
		struct {
			u8 bssid[ETH_ALEN];
		} ij;
	};
};

struct cfg80211_cached_keys {
	struct key_params params[6];
	u8 data[6][WLAN_MAX_KEY_LEN];
	int def, defmgmt;
};

enum cfg80211_chan_mode {
	CHAN_MODE_UNDEFINED,
	CHAN_MODE_SHARED,
	CHAN_MODE_EXCLUSIVE,
};

struct cfg80211_beacon_registration {
	struct list_head list;
	u32 nlportid;
};

/* free object */
extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);

extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
			       char *newname);

void ieee80211_set_bitrate_flags(struct wiphy *wiphy);

void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
void cfg80211_bss_age(struct cfg80211_registered_device *dev,
                      unsigned long age_secs);

/* IBSS */
int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
			 struct net_device *dev,
			 struct cfg80211_ibss_params *params,
			 struct cfg80211_cached_keys *connkeys);
int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
		       struct net_device *dev,
		       struct cfg80211_ibss_params *params,
		       struct cfg80211_cached_keys *connkeys);
void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
			  struct net_device *dev, bool nowext);
int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
			struct net_device *dev, bool nowext);
void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
			    struct wireless_dev *wdev);

/* mesh */
extern const struct mesh_config default_mesh_config;
extern const struct mesh_setup default_mesh_setup;
int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
			 struct net_device *dev,
			 struct mesh_setup *setup,
			 const struct mesh_config *conf);
int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
		       struct net_device *dev,
		       struct mesh_setup *setup,
		       const struct mesh_config *conf);
int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
			struct net_device *dev);
int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev,
			      struct cfg80211_chan_def *chandef);

/* AP */
int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
		     struct net_device *dev);

/* MLME */
int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
			 struct net_device *dev,
			 struct ieee80211_channel *chan,
			 enum nl80211_auth_type auth_type,
			 const u8 *bssid,
			 const u8 *ssid, int ssid_len,
			 const u8 *ie, int ie_len,
			 const u8 *key, int key_len, int key_idx,
			 const u8 *sae_data, int sae_data_len);
int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
		       struct net_device *dev, struct ieee80211_channel *chan,
		       enum nl80211_auth_type auth_type, const u8 *bssid,
		       const u8 *ssid, int ssid_len,
		       const u8 *ie, int ie_len,
		       const u8 *key, int key_len, int key_idx,
		       const u8 *sae_data, int sae_data_len);
int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
			  struct net_device *dev,
			  struct ieee80211_channel *chan,
			  const u8 *bssid, const u8 *prev_bssid,
			  const u8 *ssid, int ssid_len,
			  const u8 *ie, int ie_len, bool use_mfp,
			  struct cfg80211_crypto_settings *crypt,
			  u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
			  struct ieee80211_ht_cap *ht_capa_mask);
int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
			struct net_device *dev, struct ieee80211_channel *chan,
			const u8 *bssid, const u8 *prev_bssid,
			const u8 *ssid, int ssid_len,
			const u8 *ie, int ie_len, bool use_mfp,
			struct cfg80211_crypto_settings *crypt,
			u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
			struct ieee80211_ht_cap *ht_capa_mask);
int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
			   struct net_device *dev, const u8 *bssid,
			   const u8 *ie, int ie_len, u16 reason,
			   bool local_state_change);
int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
			 struct net_device *dev, const u8 *bssid,
			 const u8 *ie, int ie_len, u16 reason,
			 bool local_state_change);
int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
			   struct net_device *dev, const u8 *bssid,
			   const u8 *ie, int ie_len, u16 reason,
			   bool local_state_change);
void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
			struct net_device *dev);
void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
			       const u8 *req_ie, size_t req_ie_len,
			       const u8 *resp_ie, size_t resp_ie_len,
			       u16 status, bool wextev,
			       struct cfg80211_bss *bss);
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
				u16 frame_type, const u8 *match_data,
				int match_len);
void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
			  struct wireless_dev *wdev,
			  struct ieee80211_channel *chan, bool offchan,
			  unsigned int wait, const u8 *buf, size_t len,
			  bool no_cck, bool dont_wait_for_ack, u64 *cookie);
void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
			       const struct ieee80211_ht_cap *ht_capa_mask);

/* SME */
int __cfg80211_connect(struct cfg80211_registered_device *rdev,
		       struct net_device *dev,
		       struct cfg80211_connect_params *connect,
		       struct cfg80211_cached_keys *connkeys,
		       const u8 *prev_bssid);
int cfg80211_connect(struct cfg80211_registered_device *rdev,
		     struct net_device *dev,
		     struct cfg80211_connect_params *connect,
		     struct cfg80211_cached_keys *connkeys);
int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
			  struct net_device *dev, u16 reason,
			  bool wextev);
int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
			struct net_device *dev, u16 reason,
			bool wextev);
void __cfg80211_roamed(struct wireless_dev *wdev,
		       struct cfg80211_bss *bss,
		       const u8 *req_ie, size_t req_ie_len,
		       const u8 *resp_ie, size_t resp_ie_len);
int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev);

void cfg80211_conn_work(struct work_struct *work);
void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);

/* internal helpers */
bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
				   struct key_params *params, int key_idx,
				   bool pairwise, const u8 *mac_addr);
void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
			     size_t ie_len, u16 reason, bool from_ap);
void cfg80211_sme_scan_done(struct net_device *dev);
void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
void cfg80211_sme_disassoc(struct net_device *dev,
			   struct cfg80211_internal_bss *bss);
void __cfg80211_scan_done(struct work_struct *wk);
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
void __cfg80211_sched_scan_results(struct work_struct *wk);
int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
			       bool driver_initiated);
void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
			  struct net_device *dev, enum nl80211_iftype ntype,
			  u32 *flags, struct vif_params *params);
void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
void cfg80211_process_wdev_events(struct wireless_dev *wdev);

int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
				 struct wireless_dev *wdev,
				 enum nl80211_iftype iftype,
				 struct ieee80211_channel *chan,
				 enum cfg80211_chan_mode chanmode,
				 u8 radar_detect);

static inline int
cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev,
			      enum nl80211_iftype iftype)
{
	return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
					    CHAN_MODE_UNDEFINED, 0);
}

static inline int
cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
			   enum nl80211_iftype iftype)
{
	return cfg80211_can_change_interface(rdev, NULL, iftype);
}

static inline int
cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
		      struct wireless_dev *wdev,
		      struct ieee80211_channel *chan,
		      enum cfg80211_chan_mode chanmode)
{
	return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
					    chan, chanmode, 0);
}

void
cfg80211_get_chan_state(struct wireless_dev *wdev,
		        struct ieee80211_channel **chan,
		        enum cfg80211_chan_mode *chanmode);

int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
				 struct cfg80211_chan_def *chandef);

int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
			   const u8 *rates, unsigned int n_rates,
			   u32 *mask);

int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
				 u32 beacon_int);

void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
			       enum nl80211_iftype iftype, int num);

#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10

#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
#define CFG80211_DEV_WARN_ON(cond)	WARN_ON(cond)
#else
/*
 * Trick to enable using it as a condition,
 * and also not give a warning when it's
 * not used that way.
 */
#define CFG80211_DEV_WARN_ON(cond)	({bool __r = (cond); __r; })
#endif

#endif /* __NET_WIRELESS_CORE_H */
Commit	Line	Data
704232c2 JB	1	/*
	2	* Wireless configuration interface internals.
	3	*
5f2aa25e	4	* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
704232c2 JB	5	*/
	6	#ifndef __NET_WIRELESS_CORE_H
	7	#define __NET_WIRELESS_CORE_H
	8	#include <linux/mutex.h>
	9	#include <linux/list.h>
	10	#include <linux/netdevice.h>
2a519311 JB	11	#include <linux/kref.h>
2a519311 JB	12	#include <linux/rbtree.h>
1ac61302	13	#include <linux/debugfs.h>
1f87f7d3 JB	14	#include <linux/rfkill.h>
1f87f7d3 JB	15	#include <linux/workqueue.h>
c5a7e582	16	#include <linux/rtnetlink.h>
704232c2	17	#include <net/genetlink.h>
704232c2	18	#include <net/cfg80211.h>
3f2355cb	19	#include "reg.h"
704232c2	20
f4173766 JB	21
	22	#define WIPHY_IDX_INVALID -1
	23
704232c2	24	struct cfg80211_registered_device {
3dcf670b	25	const struct cfg80211_ops *ops;
704232c2 JB	26	struct list_head list;
	27	/* we hold this mutex during any call so that
	28	* we cannot do multiple calls at once, and also
	29	* to avoid the deregister call to proceed while
	30	* any call is in progress */
	31	struct mutex mtx;
	32
1f87f7d3 JB	33	/* rfkill support */
	34	struct rfkill_ops rfkill_ops;
	35	struct rfkill *rfkill;
	36	struct work_struct rfkill_sync;
	37
3f2355cb LR	38	/* ISO / IEC 3166 alpha2 for which this device is receiving
	39	* country IEs on, this can help disregard country IEs from APs
	40	* on the same alpha2 quickly. The alpha2 may differ from
	41	* cfg80211_regdomain's alpha2 when an intersection has occurred.
	42	* If the AP is reconfigured this can also be used to tell us if
	43	* the country on the country IE changed. */
	44	char country_ie_alpha2[2];
	45
	46	/* If a Country IE has been received this tells us the environment
	47	* which its telling us its in. This defaults to ENVIRON_ANY */
	48	enum environment_cap env;
	49
704232c2	50	/* wiphy index, internal only */
b5850a7a	51	int wiphy_idx;
704232c2	52
89a54e48	53	/* associated wireless interfaces */
704232c2	54	struct mutex devlist_mtx;
5f2aa25e	55	/* protected by devlist_mtx or RCU */
89a54e48 JB	56	struct list_head wdev_list;
89a54e48 JB	57	int devlist_generation, wdev_id;
ad002395 JB	58	int opencount; /* also protected by devlist_mtx */
ad002395 JB	59	wait_queue_head_t dev_wait;
704232c2	60
37c73b5f BG	61	struct list_head beacon_registrations;
37c73b5f BG	62	spinlock_t beacon_registrations_lock;
5e760230	63
c5a7e582	64	/* protected by RTNL only */
dbbae26a MK	65	int num_running_ifaces;
	66	int num_running_monitor_ifaces;
	67
2a519311 JB	68	/* BSSes/scanning */
	69	spinlock_t bss_lock;
	70	struct list_head bss_list;
	71	struct rb_root bss_tree;
	72	u32 bss_generation;
	73	struct cfg80211_scan_request scan_req; / protected by RTNL */
807f8a8c	74	struct cfg80211_sched_scan_request *sched_scan_req;
cb3a8eec	75	unsigned long suspend_at;
667503dd	76	struct work_struct scan_done_wk;
807f8a8c	77	struct work_struct sched_scan_results_wk;
2a519311	78
c10841ca LC	79	struct mutex sched_scan_mtx;
c10841ca LC	80
aff89a9b JB	81	#ifdef CONFIG_NL80211_TESTMODE
	82	struct genl_info *testmode_info;
	83	#endif
	84
6829c878	85	struct work_struct conn_work;
667503dd	86	struct work_struct event_work;
6829c878	87
ff1b6e69 JB	88	struct cfg80211_wowlan *wowlan;
ff1b6e69 JB	89
704232c2 JB	90	/* must be last because of the way we do wiphy_priv(),
704232c2 JB	91	* and it should at least be aligned to NETDEV_ALIGN */
1c06ef98	92	struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2 JB	93	};
	94
	95	static inline
	96	struct cfg80211_registered_device wiphy_to_dev(struct wiphy wiphy)
	97	{
	98	BUG_ON(!wiphy);
	99	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	100	}
	101
ff1b6e69 JB	102	static inline void
	103	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	104	{
	105	int i;
	106
	107	if (!rdev->wowlan)
	108	return;
	109	for (i = 0; i < rdev->wowlan->n_patterns; i++)
	110	kfree(rdev->wowlan->patterns[i].mask);
	111	kfree(rdev->wowlan->patterns);
	112	kfree(rdev->wowlan);
	113	}
e60d7443 AB	114
e60d7443 AB	115	extern struct workqueue_struct *cfg80211_wq;
a1794390	116	extern struct mutex cfg80211_mutex;
79c97e97	117	extern struct list_head cfg80211_rdev_list;
f5ea9120	118	extern int cfg80211_rdev_list_generation;
704232c2	119
46a5ebaf JB	120	static inline void assert_cfg80211_lock(void)
	121	{
	122	lockdep_assert_held(&cfg80211_mutex);
	123	}
761cf7ec	124
2a519311 JB	125	struct cfg80211_internal_bss {
	126	struct list_head list;
	127	struct rb_node rbn;
	128	unsigned long ts;
	129	struct kref ref;
19957bb3	130	atomic_t hold;
a08c1c1a	131
2a519311 JB	132	/* must be last because of priv member */
	133	struct cfg80211_bss pub;
	134	};
	135
19957bb3 JB	136	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	137	{
	138	return container_of(pub, struct cfg80211_internal_bss, pub);
	139	}
	140
	141	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	142	{
	143	atomic_inc(&bss->hold);
	144	}
	145
	146	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	147	{
	148	int r = atomic_dec_return(&bss->hold);
	149	WARN_ON(r < 0);
	150	}
	151
	152
79c97e97	153	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	154	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	155
79c97e97	156	/* requires cfg80211_rdev_mutex to be held! */
806a9e39 LR	157	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	158
55682965 JB	159	/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
55682965 JB	160	extern struct cfg80211_registered_device *
463d0183 JB	161	cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
	162
	163	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
	164	struct net *net);
55682965	165
79c97e97	166	static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
667503dd	167	{
79c97e97	168	mutex_lock(&rdev->mtx);
667503dd JB	169	}
667503dd JB	170
79c97e97	171	static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
4d0c8aea	172	{
79c97e97 JB	173	BUG_ON(IS_ERR(rdev) \|\| !rdev);
79c97e97 JB	174	mutex_unlock(&rdev->mtx);
4d0c8aea	175	}
55682965	176
667503dd JB	177	static inline void wdev_lock(struct wireless_dev *wdev)
	178	__acquires(wdev)
	179	{
	180	mutex_lock(&wdev->mtx);
	181	__acquire(wdev->mtx);
	182	}
	183
	184	static inline void wdev_unlock(struct wireless_dev *wdev)
	185	__releases(wdev)
	186	{
	187	__release(wdev->mtx);
	188	mutex_unlock(&wdev->mtx);
	189	}
	190
46a5ebaf JB	191	#define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
46a5ebaf JB	192	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	193
dbbae26a MK	194	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	195	{
c5a7e582	196	ASSERT_RTNL();
dbbae26a MK	197
	198	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	199	rdev->num_running_ifaces > 0;
	200	}
	201
667503dd JB	202	enum cfg80211_event_type {
	203	EVENT_CONNECT_RESULT,
	204	EVENT_ROAMED,
	205	EVENT_DISCONNECTED,
	206	EVENT_IBSS_JOINED,
	207	};
	208
	209	struct cfg80211_event {
	210	struct list_head list;
	211	enum cfg80211_event_type type;
	212
	213	union {
	214	struct {
	215	u8 bssid[ETH_ALEN];
	216	const u8 *req_ie;
	217	const u8 *resp_ie;
	218	size_t req_ie_len;
	219	size_t resp_ie_len;
	220	u16 status;
	221	} cr;
	222	struct {
667503dd JB	223	const u8 *req_ie;
	224	const u8 *resp_ie;
	225	size_t req_ie_len;
	226	size_t resp_ie_len;
adbde344	227	struct cfg80211_bss *bss;
667503dd JB	228	} rm;
	229	struct {
	230	const u8 *ie;
	231	size_t ie_len;
	232	u16 reason;
	233	} dc;
	234	struct {
	235	u8 bssid[ETH_ALEN];
	236	} ij;
	237	};
	238	};
	239
fffd0934 JB	240	struct cfg80211_cached_keys {
	241	struct key_params params[6];
	242	u8 data[6][WLAN_MAX_KEY_LEN];
	243	int def, defmgmt;
	244	};
	245
26ab9a0c MK	246	enum cfg80211_chan_mode {
	247	CHAN_MODE_UNDEFINED,
	248	CHAN_MODE_SHARED,
	249	CHAN_MODE_EXCLUSIVE,
	250	};
	251
37c73b5f BG	252	struct cfg80211_beacon_registration {
	253	struct list_head list;
	254	u32 nlportid;
	255	};
667503dd	256
704232c2	257	/* free object */
79c97e97	258	extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	259
79c97e97	260	extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
55682965 JB	261	char *newname);
55682965 JB	262
8318d78a	263	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	264
2a519311	265	void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
cb3a8eec DW	266	void cfg80211_bss_age(struct cfg80211_registered_device *dev,
cb3a8eec DW	267	unsigned long age_secs);
2a519311	268
04a773ad	269	/* IBSS */
667503dd JB	270	int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
667503dd JB	271	struct net_device *dev,
fffd0934 JB	272	struct cfg80211_ibss_params *params,
fffd0934 JB	273	struct cfg80211_cached_keys *connkeys);
04a773ad JB	274	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
04a773ad JB	275	struct net_device *dev,
fffd0934 JB	276	struct cfg80211_ibss_params *params,
fffd0934 JB	277	struct cfg80211_cached_keys *connkeys);
9d308429	278	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	279	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	280	struct net_device *dev, bool nowext);
04a773ad	281	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	282	struct net_device *dev, bool nowext);
667503dd	283	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid);
fffd0934 JB	284	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	285	struct wireless_dev *wdev);
04a773ad	286
29cbe68c JB	287	/* mesh */
29cbe68c JB	288	extern const struct mesh_config default_mesh_config;
c80d545d	289	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	290	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	291	struct net_device *dev,
cc1d2806	292	struct mesh_setup *setup,
29cbe68c JB	293	const struct mesh_config *conf);
	294	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	295	struct net_device *dev,
cc1d2806	296	struct mesh_setup *setup,
29cbe68c JB	297	const struct mesh_config *conf);
	298	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
	299	struct net_device *dev);
683b6d3b JB	300	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	301	struct wireless_dev *wdev,
	302	struct cfg80211_chan_def *chandef);
29cbe68c	303
60771780 MK	304	/* AP */
	305	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
	306	struct net_device *dev);
	307
19957bb3	308	/* MLME */
667503dd JB	309	int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
	310	struct net_device *dev,
	311	struct ieee80211_channel *chan,
	312	enum nl80211_auth_type auth_type,
	313	const u8 *bssid,
	314	const u8 *ssid, int ssid_len,
fffd0934	315	const u8 *ie, int ie_len,
e39e5b5e JM	316	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	317	const u8 *sae_data, int sae_data_len);
19957bb3 JB	318	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
	319	struct net_device dev, struct ieee80211_channel chan,
	320	enum nl80211_auth_type auth_type, const u8 *bssid,
	321	const u8 *ssid, int ssid_len,
fffd0934	322	const u8 *ie, int ie_len,
e39e5b5e JM	323	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	324	const u8 *sae_data, int sae_data_len);
667503dd JB	325	int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
	326	struct net_device *dev,
	327	struct ieee80211_channel *chan,
	328	const u8 bssid, const u8 prev_bssid,
	329	const u8 *ssid, int ssid_len,
	330	const u8 *ie, int ie_len, bool use_mfp,
7e7c8926 BG	331	struct cfg80211_crypto_settings *crypt,
	332	u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
	333	struct ieee80211_ht_cap *ht_capa_mask);
19957bb3 JB	334	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	335	struct net_device dev, struct ieee80211_channel chan,
3e5d7649 JB	336	const u8 bssid, const u8 prev_bssid,
3e5d7649 JB	337	const u8 *ssid, int ssid_len,
19957bb3	338	const u8 *ie, int ie_len, bool use_mfp,
7e7c8926 BG	339	struct cfg80211_crypto_settings *crypt,
	340	u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
	341	struct ieee80211_ht_cap *ht_capa_mask);
667503dd JB	342	int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
667503dd JB	343	struct net_device dev, const u8 bssid,
d5cdfacb JM	344	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	345	bool local_state_change);
19957bb3 JB	346	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
19957bb3 JB	347	struct net_device dev, const u8 bssid,
d5cdfacb JM	348	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	349	bool local_state_change);
19957bb3 JB	350	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	351	struct net_device dev, const u8 bssid,
d5cdfacb JM	352	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	353	bool local_state_change);
19957bb3 JB	354	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	355	struct net_device *dev);
667503dd JB	356	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	357	const u8 *req_ie, size_t req_ie_len,
	358	const u8 *resp_ie, size_t resp_ie_len,
df7fc0f9 JB	359	u16 status, bool wextev,
df7fc0f9 JB	360	struct cfg80211_bss *bss);
2e161f78 JB	361	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	362	u16 frame_type, const u8 *match_data,
	363	int match_len);
	364	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	365	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	366	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994	367	struct wireless_dev *wdev,
f7ca38df	368	struct ieee80211_channel *chan, bool offchan,
42d97a59 JB	369	unsigned int wait, const u8 *buf, size_t len,
42d97a59 JB	370	bool no_cck, bool dont_wait_for_ack, u64 *cookie);
7e7c8926 BG	371	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	372	const struct ieee80211_ht_cap *ht_capa_mask);
19957bb3	373
b23aa676	374	/* SME */
667503dd JB	375	int __cfg80211_connect(struct cfg80211_registered_device *rdev,
667503dd JB	376	struct net_device *dev,
fffd0934	377	struct cfg80211_connect_params *connect,
f401a6f7 JB	378	struct cfg80211_cached_keys *connkeys,
f401a6f7 JB	379	const u8 *prev_bssid);
b23aa676 SO	380	int cfg80211_connect(struct cfg80211_registered_device *rdev,
b23aa676 SO	381	struct net_device *dev,
fffd0934 JB	382	struct cfg80211_connect_params *connect,
fffd0934 JB	383	struct cfg80211_cached_keys *connkeys);
667503dd JB	384	int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
	385	struct net_device *dev, u16 reason,
	386	bool wextev);
b23aa676	387	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	388	struct net_device *dev, u16 reason,
f2129354 JB	389	bool wextev);
ed9d0102	390	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	391	struct cfg80211_bss *bss,
667503dd JB	392	const u8 *req_ie, size_t req_ie_len,
667503dd JB	393	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	394	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	395	struct wireless_dev *wdev);
b23aa676	396
6829c878	397	void cfg80211_conn_work(struct work_struct *work);
7d930bc3	398	void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
f401a6f7	399	bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
6829c878	400
08645126	401	/* internal helpers */
38ba3c57	402	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	403	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	404	struct key_params *params, int key_idx,
e31b8213	405	bool pairwise, const u8 *mac_addr);
667503dd	406	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
6829c878 JB	407	size_t ie_len, u16 reason, bool from_ap);
	408	void cfg80211_sme_scan_done(struct net_device *dev);
	409	void cfg80211_sme_rx_auth(struct net_device dev, const u8 buf, size_t len);
95de817b JB	410	void cfg80211_sme_disassoc(struct net_device *dev,
95de817b JB	411	struct cfg80211_internal_bss *bss);
667503dd	412	void __cfg80211_scan_done(struct work_struct *wk);
01a0ac41	413	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
807f8a8c LC	414	void __cfg80211_sched_scan_results(struct work_struct *wk);
	415	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	416	bool driver_initiated);
fffd0934	417	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	418	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	419	struct net_device *dev, enum nl80211_iftype ntype,
	420	u32 flags, struct vif_params params);
	421	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	422	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	423
d4e50c59 MK	424	int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
	425	struct wireless_dev *wdev,
	426	enum nl80211_iftype iftype,
	427	struct ieee80211_channel *chan,
11c4a075 SW	428	enum cfg80211_chan_mode chanmode,
11c4a075 SW	429	u8 radar_detect);
d4e50c59 MK	430
	431	static inline int
	432	cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
	433	struct wireless_dev *wdev,
	434	enum nl80211_iftype iftype)
	435	{
	436	return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
11c4a075	437	CHAN_MODE_UNDEFINED, 0);
d4e50c59	438	}
7527a782 JB	439
	440	static inline int
	441	cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
	442	enum nl80211_iftype iftype)
	443	{
	444	return cfg80211_can_change_interface(rdev, NULL, iftype);
	445	}
	446
d4e50c59 MK	447	static inline int
	448	cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
	449	struct wireless_dev *wdev,
	450	struct ieee80211_channel *chan,
	451	enum cfg80211_chan_mode chanmode)
	452	{
	453	return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
11c4a075	454	chan, chanmode, 0);
d4e50c59 MK	455	}
d4e50c59 MK	456
26ab9a0c	457	void
8e95ea49	458	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c MK	459	struct ieee80211_channel **chan,
	460	enum cfg80211_chan_mode *chanmode);
	461
e8c9bd5b	462	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	463	struct cfg80211_chan_def *chandef);
59bbb6f7	464
34850ab2 JB	465	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	466	const u8 *rates, unsigned int n_rates,
	467	u32 *mask);
	468
56d1893d JB	469	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
	470	u32 beacon_int);
	471
dbbae26a MK	472	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	473	enum nl80211_iftype iftype, int num);
	474
d4e50c59 MK	475	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	476
f7969969 JB	477	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	478	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	479	#else
	480	/*
	481	* Trick to enable using it as a condition,
	482	* and also not give a warning when it's
	483	* not used that way.
	484	*/
	485	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	486	#endif
	487
704232c2	488	#endif /* __NET_WIRELESS_CORE_H */