[deliverable/linux.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/list.h>
#include <linux/netdevice.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;

	/* 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, protected by rtnl 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 sk_buff *scan_msg;
	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 genl_info *cur_cmd_info;

	struct work_struct conn_work;
	struct work_struct event_work;

	struct delayed_work dfs_update_channels_wk;

	/* netlink port which started critical protocol (0 means not started) */
	u32 crit_proto_nlportid;

	struct cfg80211_coalesce *coalesce;

	spinlock_t destroy_list_lock;
	struct list_head destroy_list;
	struct work_struct destroy_work;

	/* 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_rdev(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)
{
#ifdef CONFIG_PM
	int i;

	if (!rdev->wiphy.wowlan_config)
		return;
	for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
		kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
	kfree(rdev->wiphy.wowlan_config->patterns);
	if (rdev->wiphy.wowlan_config->tcp &&
	    rdev->wiphy.wowlan_config->tcp->sock)
		sock_release(rdev->wiphy.wowlan_config->tcp->sock);
	kfree(rdev->wiphy.wowlan_config->tcp);
	kfree(rdev->wiphy.wowlan_config);
#endif
}

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

struct cfg80211_internal_bss {
	struct list_head list;
	struct list_head hidden_list;
	struct rb_node rbn;
	unsigned long ts;
	unsigned long refcount;
	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);

struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);

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

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_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,
	EVENT_STOPPED,
};

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];
			struct ieee80211_channel *channel;
		} 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;
};

struct cfg80211_iface_destroy {
	struct list_head list;
	u32 nlportid;
};

void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);

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

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 *rdev);
void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
                      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);
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,
			    struct ieee80211_channel *channel);
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_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);

/* OCB */
int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
			struct net_device *dev,
			struct ocb_setup *setup);
int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
		      struct net_device *dev,
		      struct ocb_setup *setup);
int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
			 struct net_device *dev);
int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
		       struct net_device *dev);

/* AP */
int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
		       struct net_device *dev, bool notify);
int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
		     struct net_device *dev, bool notify);

/* 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_assoc(struct cfg80211_registered_device *rdev,
			struct net_device *dev,
			struct ieee80211_channel *chan,
			const u8 *bssid,
			const u8 *ssid, int ssid_len,
			struct cfg80211_assoc_request *req);
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);
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 cfg80211_mgmt_tx_params *params,
			  u64 *cookie);
void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
			       const struct ieee80211_ht_cap *ht_capa_mask);
void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
				const struct ieee80211_vht_cap *vht_capa_mask);

/* SME events */
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);
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);
void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
			     size_t ie_len, u16 reason, bool from_ap);
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);

/* SME implementation */
void cfg80211_conn_work(struct work_struct *work);
void cfg80211_sme_scan_done(struct net_device *dev);
bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
void cfg80211_sme_rx_auth(struct wireless_dev *wdev, const u8 *buf, size_t len);
void cfg80211_sme_disassoc(struct wireless_dev *wdev);
void cfg80211_sme_deauth(struct wireless_dev *wdev);
void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
void cfg80211_sme_assoc_timeout(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_scan_done(struct work_struct *wk);
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
			   bool send_message);
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);

/**
 * cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
 * @wiphy: the wiphy to validate against
 * @chandef: the channel definition to check
 *
 * Checks if chandef is usable and we can/need start CAC on such channel.
 *
 * Return: Return true if all channels available and at least
 *	   one channel require CAC (NL80211_DFS_USABLE)
 */
bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
				 const struct cfg80211_chan_def *chandef);

void cfg80211_set_dfs_state(struct wiphy *wiphy,
			    const struct cfg80211_chan_def *chandef,
			    enum nl80211_dfs_state dfs_state);

void cfg80211_dfs_channels_update_work(struct work_struct *work);

unsigned int
cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
			      const struct cfg80211_chan_def *chandef);

static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
{
	unsigned long end = jiffies;

	if (end >= start)
		return jiffies_to_msecs(end - start);

	return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
}

void
cfg80211_get_chan_state(struct wireless_dev *wdev,
		        struct ieee80211_channel **chan,
		        enum cfg80211_chan_mode *chanmode,
		        u8 *radar_detect);

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);

void __cfg80211_leave(struct cfg80211_registered_device *rdev,
		      struct wireless_dev *wdev);
void cfg80211_leave(struct cfg80211_registered_device *rdev,
		    struct wireless_dev *wdev);

void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev);

#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
704232c2 JB	8	#include <linux/list.h>
704232c2 JB	9	#include <linux/netdevice.h>
2a519311	10	#include <linux/rbtree.h>
1ac61302	11	#include <linux/debugfs.h>
1f87f7d3 JB	12	#include <linux/rfkill.h>
1f87f7d3 JB	13	#include <linux/workqueue.h>
c5a7e582	14	#include <linux/rtnetlink.h>
704232c2	15	#include <net/genetlink.h>
704232c2	16	#include <net/cfg80211.h>
3f2355cb	17	#include "reg.h"
704232c2	18
f4173766 JB	19
	20	#define WIPHY_IDX_INVALID -1
	21
704232c2	22	struct cfg80211_registered_device {
3dcf670b	23	const struct cfg80211_ops *ops;
704232c2	24	struct list_head list;
704232c2	25
1f87f7d3 JB	26	/* rfkill support */
	27	struct rfkill_ops rfkill_ops;
	28	struct rfkill *rfkill;
	29	struct work_struct rfkill_sync;
	30
3f2355cb LR	31	/* ISO / IEC 3166 alpha2 for which this device is receiving
	32	* country IEs on, this can help disregard country IEs from APs
	33	* on the same alpha2 quickly. The alpha2 may differ from
	34	* cfg80211_regdomain's alpha2 when an intersection has occurred.
	35	* If the AP is reconfigured this can also be used to tell us if
	36	* the country on the country IE changed. */
	37	char country_ie_alpha2[2];
	38
	39	/* If a Country IE has been received this tells us the environment
	40	* which its telling us its in. This defaults to ENVIRON_ANY */
	41	enum environment_cap env;
	42
704232c2	43	/* wiphy index, internal only */
b5850a7a	44	int wiphy_idx;
704232c2	45
5fe231e8	46	/* associated wireless interfaces, protected by rtnl or RCU */
89a54e48 JB	47	struct list_head wdev_list;
89a54e48 JB	48	int devlist_generation, wdev_id;
ad002395 JB	49	int opencount; /* also protected by devlist_mtx */
ad002395 JB	50	wait_queue_head_t dev_wait;
704232c2	51
37c73b5f BG	52	struct list_head beacon_registrations;
37c73b5f BG	53	spinlock_t beacon_registrations_lock;
5e760230	54
c5a7e582	55	/* protected by RTNL only */
dbbae26a MK	56	int num_running_ifaces;
	57	int num_running_monitor_ifaces;
	58
2a519311 JB	59	/* BSSes/scanning */
	60	spinlock_t bss_lock;
	61	struct list_head bss_list;
	62	struct rb_root bss_tree;
	63	u32 bss_generation;
	64	struct cfg80211_scan_request scan_req; / protected by RTNL */
f9d15d16	65	struct sk_buff *scan_msg;
807f8a8c	66	struct cfg80211_sched_scan_request *sched_scan_req;
cb3a8eec	67	unsigned long suspend_at;
667503dd	68	struct work_struct scan_done_wk;
807f8a8c	69	struct work_struct sched_scan_results_wk;
2a519311	70
ad7e718c	71	struct genl_info *cur_cmd_info;
aff89a9b	72
6829c878	73	struct work_struct conn_work;
667503dd	74	struct work_struct event_work;
6829c878	75
04f39047 SW	76	struct delayed_work dfs_update_channels_wk;
04f39047 SW	77
5de17984 AS	78	/* netlink port which started critical protocol (0 means not started) */
	79	u32 crit_proto_nlportid;
	80
be29b99a AK	81	struct cfg80211_coalesce *coalesce;
be29b99a AK	82
78f22b6a JB	83	spinlock_t destroy_list_lock;
	84	struct list_head destroy_list;
	85	struct work_struct destroy_work;
	86
704232c2 JB	87	/* must be last because of the way we do wiphy_priv(),
704232c2 JB	88	* and it should at least be aligned to NETDEV_ALIGN */
1c06ef98	89	struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2 JB	90	};
	91
	92	static inline
f26cbf40	93	struct cfg80211_registered_device wiphy_to_rdev(struct wiphy wiphy)
704232c2 JB	94	{
	95	BUG_ON(!wiphy);
	96	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	97	}
	98
ff1b6e69 JB	99	static inline void
	100	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	101	{
6abb9cb9	102	#ifdef CONFIG_PM
ff1b6e69 JB	103	int i;
ff1b6e69 JB	104
6abb9cb9	105	if (!rdev->wiphy.wowlan_config)
ff1b6e69	106	return;
6abb9cb9 JB	107	for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
	108	kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
	109	kfree(rdev->wiphy.wowlan_config->patterns);
	110	if (rdev->wiphy.wowlan_config->tcp &&
	111	rdev->wiphy.wowlan_config->tcp->sock)
	112	sock_release(rdev->wiphy.wowlan_config->tcp->sock);
	113	kfree(rdev->wiphy.wowlan_config->tcp);
	114	kfree(rdev->wiphy.wowlan_config);
	115	#endif
ff1b6e69	116	}
e60d7443 AB	117
e60d7443 AB	118	extern struct workqueue_struct *cfg80211_wq;
79c97e97	119	extern struct list_head cfg80211_rdev_list;
f5ea9120	120	extern int cfg80211_rdev_list_generation;
704232c2	121
2a519311 JB	122	struct cfg80211_internal_bss {
2a519311 JB	123	struct list_head list;
776b3580	124	struct list_head hidden_list;
2a519311 JB	125	struct rb_node rbn;
2a519311 JB	126	unsigned long ts;
776b3580	127	unsigned long refcount;
19957bb3	128	atomic_t hold;
a08c1c1a	129
2a519311 JB	130	/* must be last because of priv member */
	131	struct cfg80211_bss pub;
	132	};
	133
19957bb3 JB	134	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	135	{
	136	return container_of(pub, struct cfg80211_internal_bss, pub);
	137	}
	138
	139	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	140	{
	141	atomic_inc(&bss->hold);
	142	}
	143
	144	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	145	{
	146	int r = atomic_dec_return(&bss->hold);
	147	WARN_ON(r < 0);
	148	}
	149
	150
79c97e97	151	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	152	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	153
806a9e39 LR	154	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	155
463d0183 JB	156	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
463d0183 JB	157	struct net *net);
55682965	158
667503dd JB	159	static inline void wdev_lock(struct wireless_dev *wdev)
	160	__acquires(wdev)
	161	{
	162	mutex_lock(&wdev->mtx);
	163	__acquire(wdev->mtx);
	164	}
	165
	166	static inline void wdev_unlock(struct wireless_dev *wdev)
	167	__releases(wdev)
	168	{
	169	__release(wdev->mtx);
	170	mutex_unlock(&wdev->mtx);
	171	}
	172
46a5ebaf	173	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	174
dbbae26a MK	175	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	176	{
c5a7e582	177	ASSERT_RTNL();
dbbae26a MK	178
	179	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	180	rdev->num_running_ifaces > 0;
	181	}
	182
667503dd JB	183	enum cfg80211_event_type {
	184	EVENT_CONNECT_RESULT,
	185	EVENT_ROAMED,
	186	EVENT_DISCONNECTED,
	187	EVENT_IBSS_JOINED,
f04c2203	188	EVENT_STOPPED,
667503dd JB	189	};
	190
	191	struct cfg80211_event {
	192	struct list_head list;
	193	enum cfg80211_event_type type;
	194
	195	union {
	196	struct {
	197	u8 bssid[ETH_ALEN];
	198	const u8 *req_ie;
	199	const u8 *resp_ie;
	200	size_t req_ie_len;
	201	size_t resp_ie_len;
	202	u16 status;
	203	} cr;
	204	struct {
667503dd JB	205	const u8 *req_ie;
	206	const u8 *resp_ie;
	207	size_t req_ie_len;
	208	size_t resp_ie_len;
adbde344	209	struct cfg80211_bss *bss;
667503dd JB	210	} rm;
	211	struct {
	212	const u8 *ie;
	213	size_t ie_len;
	214	u16 reason;
	215	} dc;
	216	struct {
	217	u8 bssid[ETH_ALEN];
fe94f3a4	218	struct ieee80211_channel *channel;
667503dd JB	219	} ij;
	220	};
	221	};
	222
fffd0934 JB	223	struct cfg80211_cached_keys {
	224	struct key_params params[6];
	225	u8 data[6][WLAN_MAX_KEY_LEN];
	226	int def, defmgmt;
	227	};
	228
26ab9a0c MK	229	enum cfg80211_chan_mode {
	230	CHAN_MODE_UNDEFINED,
	231	CHAN_MODE_SHARED,
	232	CHAN_MODE_EXCLUSIVE,
	233	};
	234
37c73b5f BG	235	struct cfg80211_beacon_registration {
	236	struct list_head list;
	237	u32 nlportid;
	238	};
667503dd	239
78f22b6a JB	240	struct cfg80211_iface_destroy {
	241	struct list_head list;
	242	u32 nlportid;
	243	};
	244
	245	void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
	246
704232c2	247	/* free object */
c1b1203d	248	void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	249
c1b1203d JP	250	int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
c1b1203d JP	251	char *newname);
55682965	252
8318d78a	253	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	254
1b8ec87a ZG	255	void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
1b8ec87a ZG	256	void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
cb3a8eec	257	unsigned long age_secs);
2a519311	258
04a773ad JB	259	/* IBSS */
	260	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
	261	struct net_device *dev,
fffd0934 JB	262	struct cfg80211_ibss_params *params,
fffd0934 JB	263	struct cfg80211_cached_keys *connkeys);
9d308429	264	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	265	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	266	struct net_device *dev, bool nowext);
04a773ad	267	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	268	struct net_device *dev, bool nowext);
fe94f3a4 AQ	269	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid,
fe94f3a4 AQ	270	struct ieee80211_channel *channel);
fffd0934 JB	271	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	272	struct wireless_dev *wdev);
04a773ad	273
29cbe68c JB	274	/* mesh */
29cbe68c JB	275	extern const struct mesh_config default_mesh_config;
c80d545d	276	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	277	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	278	struct net_device *dev,
cc1d2806	279	struct mesh_setup *setup,
29cbe68c JB	280	const struct mesh_config *conf);
	281	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	282	struct net_device *dev,
cc1d2806	283	struct mesh_setup *setup,
29cbe68c	284	const struct mesh_config *conf);
f04c2203 MK	285	int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
f04c2203 MK	286	struct net_device *dev);
29cbe68c JB	287	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	288	struct net_device *dev);
683b6d3b JB	289	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	290	struct wireless_dev *wdev,
	291	struct cfg80211_chan_def *chandef);
29cbe68c	292
6e0bd6c3 RL	293	/* OCB */
	294	int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	295	struct net_device *dev,
	296	struct ocb_setup *setup);
	297	int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	298	struct net_device *dev,
	299	struct ocb_setup *setup);
	300	int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	301	struct net_device *dev);
	302	int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	303	struct net_device *dev);
	304
60771780	305	/* AP */
f04c2203 MK	306	int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
f04c2203 MK	307	struct net_device *dev, bool notify);
60771780	308	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
7c8d5e03	309	struct net_device *dev, bool notify);
60771780	310
19957bb3 JB	311	/* MLME */
19957bb3 JB	312	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
91bf9b26 JB	313	struct net_device *dev,
	314	struct ieee80211_channel *chan,
	315	enum nl80211_auth_type auth_type,
	316	const u8 *bssid,
19957bb3	317	const u8 *ssid, int ssid_len,
fffd0934	318	const u8 *ie, int ie_len,
e39e5b5e JM	319	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	320	const u8 *sae_data, int sae_data_len);
19957bb3	321	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
f62fab73 JB	322	struct net_device *dev,
	323	struct ieee80211_channel *chan,
	324	const u8 *bssid,
3e5d7649	325	const u8 *ssid, int ssid_len,
f62fab73	326	struct cfg80211_assoc_request *req);
19957bb3 JB	327	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
19957bb3 JB	328	struct net_device dev, const u8 bssid,
d5cdfacb JM	329	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	330	bool local_state_change);
19957bb3 JB	331	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	332	struct net_device dev, const u8 bssid,
d5cdfacb JM	333	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	334	bool local_state_change);
19957bb3 JB	335	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	336	struct net_device *dev);
2e161f78 JB	337	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	338	u16 frame_type, const u8 *match_data,
	339	int match_len);
	340	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	341	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	342	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994	343	struct wireless_dev *wdev,
b176e629 AO	344	struct cfg80211_mgmt_tx_params *params,
b176e629 AO	345	u64 *cookie);
7e7c8926 BG	346	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	347	const struct ieee80211_ht_cap *ht_capa_mask);
ee2aca34 JB	348	void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
ee2aca34 JB	349	const struct ieee80211_vht_cap *vht_capa_mask);
19957bb3	350
ceca7b71	351	/* SME events */
b23aa676 SO	352	int cfg80211_connect(struct cfg80211_registered_device *rdev,
b23aa676 SO	353	struct net_device *dev,
fffd0934	354	struct cfg80211_connect_params *connect,
83739b03 JB	355	struct cfg80211_cached_keys *connkeys,
83739b03 JB	356	const u8 *prev_bssid);
ceca7b71 JB	357	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	358	const u8 *req_ie, size_t req_ie_len,
	359	const u8 *resp_ie, size_t resp_ie_len,
	360	u16 status, bool wextev,
	361	struct cfg80211_bss *bss);
	362	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
	363	size_t ie_len, u16 reason, bool from_ap);
b23aa676	364	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	365	struct net_device *dev, u16 reason,
f2129354 JB	366	bool wextev);
ed9d0102	367	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	368	struct cfg80211_bss *bss,
667503dd JB	369	const u8 *req_ie, size_t req_ie_len,
667503dd JB	370	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	371	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	372	struct wireless_dev *wdev);
b23aa676	373
ceca7b71	374	/* SME implementation */
6829c878	375	void cfg80211_conn_work(struct work_struct *work);
ceca7b71 JB	376	void cfg80211_sme_scan_done(struct net_device *dev);
	377	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
	378	void cfg80211_sme_rx_auth(struct wireless_dev wdev, const u8 buf, size_t len);
	379	void cfg80211_sme_disassoc(struct wireless_dev *wdev);
	380	void cfg80211_sme_deauth(struct wireless_dev *wdev);
	381	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
	382	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
6829c878	383
08645126	384	/* internal helpers */
38ba3c57	385	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	386	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	387	struct key_params *params, int key_idx,
e31b8213	388	bool pairwise, const u8 *mac_addr);
667503dd	389	void __cfg80211_scan_done(struct work_struct *wk);
f9d15d16 JB	390	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
f9d15d16 JB	391	bool send_message);
807f8a8c LC	392	void __cfg80211_sched_scan_results(struct work_struct *wk);
	393	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	394	bool driver_initiated);
fffd0934	395	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	396	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	397	struct net_device *dev, enum nl80211_iftype ntype,
	398	u32 flags, struct vif_params params);
	399	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	400	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	401
d4e50c59 MK	402	int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
	403	struct wireless_dev *wdev,
	404	enum nl80211_iftype iftype,
	405	struct ieee80211_channel *chan,
11c4a075 SW	406	enum cfg80211_chan_mode chanmode,
11c4a075 SW	407	u8 radar_detect);
d4e50c59	408
fe7c3a1f JD	409	/**
	410	* cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
	411	* @wiphy: the wiphy to validate against
	412	* @chandef: the channel definition to check
	413	*
	414	* Checks if chandef is usable and we can/need start CAC on such channel.
	415	*
	416	* Return: Return true if all channels available and at least
	417	* one channel require CAC (NL80211_DFS_USABLE)
	418	*/
	419	bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
	420	const struct cfg80211_chan_def *chandef);
	421
04f39047 SW	422	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	423	const struct cfg80211_chan_def *chandef,
	424	enum nl80211_dfs_state dfs_state);
	425
	426	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	427
31559f35 JD	428	unsigned int
	429	cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
	430	const struct cfg80211_chan_def *chandef);
04f39047	431
04f39047 SW	432	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	433	{
	434	unsigned long end = jiffies;
	435
	436	if (end >= start)
	437	return jiffies_to_msecs(end - start);
	438
0ce12026	439	return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
04f39047 SW	440	}
04f39047 SW	441
26ab9a0c	442	void
8e95ea49	443	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c	444	struct ieee80211_channel **chan,
9e0e2961 MK	445	enum cfg80211_chan_mode *chanmode,
9e0e2961 MK	446	u8 *radar_detect);
26ab9a0c	447
e8c9bd5b	448	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	449	struct cfg80211_chan_def *chandef);
59bbb6f7	450
34850ab2 JB	451	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	452	const u8 *rates, unsigned int n_rates,
	453	u32 *mask);
	454
56d1893d JB	455	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
	456	u32 beacon_int);
	457
dbbae26a MK	458	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	459	enum nl80211_iftype iftype, int num);
	460
f04c2203 MK	461	void __cfg80211_leave(struct cfg80211_registered_device *rdev,
f04c2203 MK	462	struct wireless_dev *wdev);
81256969 SG	463	void cfg80211_leave(struct cfg80211_registered_device *rdev,
	464	struct wireless_dev *wdev);
	465
f9f47529 JB	466	void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
	467	struct wireless_dev *wdev);
	468
d4e50c59 MK	469	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	470
f7969969 JB	471	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	472	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	473	#else
	474	/*
	475	* Trick to enable using it as a condition,
	476	* and also not give a warning when it's
	477	* not used that way.
	478	*/
	479	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	480	#endif
	481
704232c2	482	#endif /* __NET_WIRELESS_CORE_H */