[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);

/* 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
	1	/*
	2	* Wireless configuration interface internals.
	3	*
	4	* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
	5	*/
	6	#ifndef __NET_WIRELESS_CORE_H
	7	#define __NET_WIRELESS_CORE_H
	8	#include <linux/list.h>
	9	#include <linux/netdevice.h>
	10	#include <linux/rbtree.h>
	11	#include <linux/debugfs.h>
	12	#include <linux/rfkill.h>
	13	#include <linux/workqueue.h>
	14	#include <linux/rtnetlink.h>
	15	#include <net/genetlink.h>
	16	#include <net/cfg80211.h>
	17	#include "reg.h"
	18
	19
	20	#define WIPHY_IDX_INVALID -1
	21
	22	struct cfg80211_registered_device {
	23	const struct cfg80211_ops *ops;
	24	struct list_head list;
	25
	26	/* rfkill support */
	27	struct rfkill_ops rfkill_ops;
	28	struct rfkill *rfkill;
	29	struct work_struct rfkill_sync;
	30
	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
	43	/* wiphy index, internal only */
	44	int wiphy_idx;
	45
	46	/* associated wireless interfaces, protected by rtnl or RCU */
	47	struct list_head wdev_list;
	48	int devlist_generation, wdev_id;
	49	int opencount; /* also protected by devlist_mtx */
	50	wait_queue_head_t dev_wait;
	51
	52	struct list_head beacon_registrations;
	53	spinlock_t beacon_registrations_lock;
	54
	55	/* protected by RTNL only */
	56	int num_running_ifaces;
	57	int num_running_monitor_ifaces;
	58
	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 */
	65	struct sk_buff *scan_msg;
	66	struct cfg80211_sched_scan_request *sched_scan_req;
	67	unsigned long suspend_at;
	68	struct work_struct scan_done_wk;
	69	struct work_struct sched_scan_results_wk;
	70
	71	struct genl_info *cur_cmd_info;
	72
	73	struct work_struct conn_work;
	74	struct work_struct event_work;
	75
	76	struct delayed_work dfs_update_channels_wk;
	77
	78	/* netlink port which started critical protocol (0 means not started) */
	79	u32 crit_proto_nlportid;
	80
	81	struct cfg80211_coalesce *coalesce;
	82
	83	spinlock_t destroy_list_lock;
	84	struct list_head destroy_list;
	85	struct work_struct destroy_work;
	86
	87	/* must be last because of the way we do wiphy_priv(),
	88	* and it should at least be aligned to NETDEV_ALIGN */
	89	struct wiphy wiphy __aligned(NETDEV_ALIGN);
	90	};
	91
	92	static inline
	93	struct cfg80211_registered_device wiphy_to_rdev(struct wiphy wiphy)
	94	{
	95	BUG_ON(!wiphy);
	96	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	97	}
	98
	99	static inline void
	100	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	101	{
	102	#ifdef CONFIG_PM
	103	int i;
	104
	105	if (!rdev->wiphy.wowlan_config)
	106	return;
	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
	116	}
	117
	118	extern struct workqueue_struct *cfg80211_wq;
	119	extern struct list_head cfg80211_rdev_list;
	120	extern int cfg80211_rdev_list_generation;
	121
	122	struct cfg80211_internal_bss {
	123	struct list_head list;
	124	struct list_head hidden_list;
	125	struct rb_node rbn;
	126	unsigned long ts;
	127	unsigned long refcount;
	128	atomic_t hold;
	129
	130	/* must be last because of priv member */
	131	struct cfg80211_bss pub;
	132	};
	133
	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
	151	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
	152	int get_wiphy_idx(struct wiphy *wiphy);
	153
	154	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
	155
	156	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
	157	struct net *net);
	158
	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
	173	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
	174
	175	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
	176	{
	177	ASSERT_RTNL();
	178
	179	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	180	rdev->num_running_ifaces > 0;
	181	}
	182
	183	enum cfg80211_event_type {
	184	EVENT_CONNECT_RESULT,
	185	EVENT_ROAMED,
	186	EVENT_DISCONNECTED,
	187	EVENT_IBSS_JOINED,
	188	EVENT_STOPPED,
	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 {
	205	const u8 *req_ie;
	206	const u8 *resp_ie;
	207	size_t req_ie_len;
	208	size_t resp_ie_len;
	209	struct cfg80211_bss *bss;
	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];
	218	struct ieee80211_channel *channel;
	219	} ij;
	220	};
	221	};
	222
	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
	229	enum cfg80211_chan_mode {
	230	CHAN_MODE_UNDEFINED,
	231	CHAN_MODE_SHARED,
	232	CHAN_MODE_EXCLUSIVE,
	233	};
	234
	235	struct cfg80211_beacon_registration {
	236	struct list_head list;
	237	u32 nlportid;
	238	};
	239
	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
	247	/* free object */
	248	void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
	249
	250	int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
	251	char *newname);
	252
	253	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
	254
	255	void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
	256	void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
	257	unsigned long age_secs);
	258
	259	/* IBSS */
	260	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
	261	struct net_device *dev,
	262	struct cfg80211_ibss_params *params,
	263	struct cfg80211_cached_keys *connkeys);
	264	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
	265	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
	266	struct net_device *dev, bool nowext);
	267	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
	268	struct net_device *dev, bool nowext);
	269	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid,
	270	struct ieee80211_channel *channel);
	271	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
	272	struct wireless_dev *wdev);
	273
	274	/* mesh */
	275	extern const struct mesh_config default_mesh_config;
	276	extern const struct mesh_setup default_mesh_setup;
	277	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	278	struct net_device *dev,
	279	struct mesh_setup *setup,
	280	const struct mesh_config *conf);
	281	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	282	struct net_device *dev,
	283	struct mesh_setup *setup,
	284	const struct mesh_config *conf);
	285	int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
	286	struct net_device *dev);
	287	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
	288	struct net_device *dev);
	289	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	290	struct wireless_dev *wdev,
	291	struct cfg80211_chan_def *chandef);
	292
	293	/* AP */
	294	int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
	295	struct net_device *dev, bool notify);
	296	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
	297	struct net_device *dev, bool notify);
	298
	299	/* MLME */
	300	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
	301	struct net_device *dev,
	302	struct ieee80211_channel *chan,
	303	enum nl80211_auth_type auth_type,
	304	const u8 *bssid,
	305	const u8 *ssid, int ssid_len,
	306	const u8 *ie, int ie_len,
	307	const u8 *key, int key_len, int key_idx,
	308	const u8 *sae_data, int sae_data_len);
	309	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
	310	struct net_device *dev,
	311	struct ieee80211_channel *chan,
	312	const u8 *bssid,
	313	const u8 *ssid, int ssid_len,
	314	struct cfg80211_assoc_request *req);
	315	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
	316	struct net_device dev, const u8 bssid,
	317	const u8 *ie, int ie_len, u16 reason,
	318	bool local_state_change);
	319	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
	320	struct net_device dev, const u8 bssid,
	321	const u8 *ie, int ie_len, u16 reason,
	322	bool local_state_change);
	323	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
	324	struct net_device *dev);
	325	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	326	u16 frame_type, const u8 *match_data,
	327	int match_len);
	328	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	329	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	330	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
	331	struct wireless_dev *wdev,
	332	struct cfg80211_mgmt_tx_params *params,
	333	u64 *cookie);
	334	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
	335	const struct ieee80211_ht_cap *ht_capa_mask);
	336	void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
	337	const struct ieee80211_vht_cap *vht_capa_mask);
	338
	339	/* SME events */
	340	int cfg80211_connect(struct cfg80211_registered_device *rdev,
	341	struct net_device *dev,
	342	struct cfg80211_connect_params *connect,
	343	struct cfg80211_cached_keys *connkeys,
	344	const u8 *prev_bssid);
	345	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	346	const u8 *req_ie, size_t req_ie_len,
	347	const u8 *resp_ie, size_t resp_ie_len,
	348	u16 status, bool wextev,
	349	struct cfg80211_bss *bss);
	350	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
	351	size_t ie_len, u16 reason, bool from_ap);
	352	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
	353	struct net_device *dev, u16 reason,
	354	bool wextev);
	355	void __cfg80211_roamed(struct wireless_dev *wdev,
	356	struct cfg80211_bss *bss,
	357	const u8 *req_ie, size_t req_ie_len,
	358	const u8 *resp_ie, size_t resp_ie_len);
	359	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
	360	struct wireless_dev *wdev);
	361
	362	/* SME implementation */
	363	void cfg80211_conn_work(struct work_struct *work);
	364	void cfg80211_sme_scan_done(struct net_device *dev);
	365	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
	366	void cfg80211_sme_rx_auth(struct wireless_dev wdev, const u8 buf, size_t len);
	367	void cfg80211_sme_disassoc(struct wireless_dev *wdev);
	368	void cfg80211_sme_deauth(struct wireless_dev *wdev);
	369	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
	370	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
	371
	372	/* internal helpers */
	373	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
	374	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
	375	struct key_params *params, int key_idx,
	376	bool pairwise, const u8 *mac_addr);
	377	void __cfg80211_scan_done(struct work_struct *wk);
	378	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
	379	bool send_message);
	380	void __cfg80211_sched_scan_results(struct work_struct *wk);
	381	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	382	bool driver_initiated);
	383	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
	384	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	385	struct net_device *dev, enum nl80211_iftype ntype,
	386	u32 flags, struct vif_params params);
	387	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
	388	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
	389
	390	int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
	391	struct wireless_dev *wdev,
	392	enum nl80211_iftype iftype,
	393	struct ieee80211_channel *chan,
	394	enum cfg80211_chan_mode chanmode,
	395	u8 radar_detect);
	396
	397	/**
	398	* cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
	399	* @wiphy: the wiphy to validate against
	400	* @chandef: the channel definition to check
	401	*
	402	* Checks if chandef is usable and we can/need start CAC on such channel.
	403	*
	404	* Return: Return true if all channels available and at least
	405	* one channel require CAC (NL80211_DFS_USABLE)
	406	*/
	407	bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
	408	const struct cfg80211_chan_def *chandef);
	409
	410	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	411	const struct cfg80211_chan_def *chandef,
	412	enum nl80211_dfs_state dfs_state);
	413
	414	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	415
	416	unsigned int
	417	cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
	418	const struct cfg80211_chan_def *chandef);
	419
	420	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	421	{
	422	unsigned long end = jiffies;
	423
	424	if (end >= start)
	425	return jiffies_to_msecs(end - start);
	426
	427	return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
	428	}
	429
	430	void
	431	cfg80211_get_chan_state(struct wireless_dev *wdev,
	432	struct ieee80211_channel **chan,
	433	enum cfg80211_chan_mode *chanmode,
	434	u8 *radar_detect);
	435
	436	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
	437	struct cfg80211_chan_def *chandef);
	438
	439	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	440	const u8 *rates, unsigned int n_rates,
	441	u32 *mask);
	442
	443	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
	444	u32 beacon_int);
	445
	446	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	447	enum nl80211_iftype iftype, int num);
	448
	449	void __cfg80211_leave(struct cfg80211_registered_device *rdev,
	450	struct wireless_dev *wdev);
	451	void cfg80211_leave(struct cfg80211_registered_device *rdev,
	452	struct wireless_dev *wdev);
	453
	454	void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
	455	struct wireless_dev *wdev);
	456
	457	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
	458
	459	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	460	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	461	#else
	462	/*
	463	* Trick to enable using it as a condition,
	464	* and also not give a warning when it's
	465	* not used that way.
	466	*/
	467	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	468	#endif
	469
	470	#endif /* __NET_WIRELESS_CORE_H */