[mirror_ubuntu-zesty-kernel.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 cfg80211_sched_scan_request *sched_scan_req;
	unsigned long suspend_at;
	struct work_struct scan_done_wk;
	struct work_struct sched_scan_results_wk;

#ifdef CONFIG_NL80211_TESTMODE
	struct genl_info *testmode_info;
#endif

	struct work_struct conn_work;
	struct work_struct event_work;

	struct cfg80211_wowlan *wowlan;

	struct delayed_work dfs_update_channels_wk;

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

	/* 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);
	if (rdev->wowlan->tcp && rdev->wowlan->tcp->sock)
		sock_release(rdev->wowlan->tcp->sock);
	kfree(rdev->wowlan->tcp);
	kfree(rdev->wowlan);
}

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_RDEV_LOCK(rdev) ASSERT_RTNL()
#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_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);
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);
void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
				const struct ieee80211_vht_cap *vht_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_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);

/**
 * cfg80211_chandef_dfs_required - checks if radar detection is required
 * @wiphy: the wiphy to validate against
 * @chandef: the channel definition to check
 * Return: 1 if radar detection is required, 0 if it is not, < 0 on error
 */
int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
				  const struct cfg80211_chan_def *c);

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);


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);
}

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 + (MAX_JIFFY_OFFSET - start) + 1);
}

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);

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 */
807f8a8c	65	struct cfg80211_sched_scan_request *sched_scan_req;
cb3a8eec	66	unsigned long suspend_at;
667503dd	67	struct work_struct scan_done_wk;
807f8a8c	68	struct work_struct sched_scan_results_wk;
2a519311	69
aff89a9b JB	70	#ifdef CONFIG_NL80211_TESTMODE
	71	struct genl_info *testmode_info;
	72	#endif
	73
6829c878	74	struct work_struct conn_work;
667503dd	75	struct work_struct event_work;
6829c878	76
ff1b6e69 JB	77	struct cfg80211_wowlan *wowlan;
ff1b6e69 JB	78
04f39047 SW	79	struct delayed_work dfs_update_channels_wk;
04f39047 SW	80
5de17984 AS	81	/* netlink port which started critical protocol (0 means not started) */
	82	u32 crit_proto_nlportid;
	83
704232c2 JB	84	/* must be last because of the way we do wiphy_priv(),
704232c2 JB	85	* and it should at least be aligned to NETDEV_ALIGN */
1c06ef98	86	struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2 JB	87	};
	88
	89	static inline
	90	struct cfg80211_registered_device wiphy_to_dev(struct wiphy wiphy)
	91	{
	92	BUG_ON(!wiphy);
	93	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	94	}
	95
ff1b6e69 JB	96	static inline void
	97	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	98	{
	99	int i;
	100
	101	if (!rdev->wowlan)
	102	return;
	103	for (i = 0; i < rdev->wowlan->n_patterns; i++)
	104	kfree(rdev->wowlan->patterns[i].mask);
	105	kfree(rdev->wowlan->patterns);
2a0e047e JB	106	if (rdev->wowlan->tcp && rdev->wowlan->tcp->sock)
	107	sock_release(rdev->wowlan->tcp->sock);
	108	kfree(rdev->wowlan->tcp);
ff1b6e69 JB	109	kfree(rdev->wowlan);
ff1b6e69 JB	110	}
e60d7443 AB	111
e60d7443 AB	112	extern struct workqueue_struct *cfg80211_wq;
79c97e97	113	extern struct list_head cfg80211_rdev_list;
f5ea9120	114	extern int cfg80211_rdev_list_generation;
704232c2	115
2a519311 JB	116	struct cfg80211_internal_bss {
2a519311 JB	117	struct list_head list;
776b3580	118	struct list_head hidden_list;
2a519311 JB	119	struct rb_node rbn;
2a519311 JB	120	unsigned long ts;
776b3580	121	unsigned long refcount;
19957bb3	122	atomic_t hold;
a08c1c1a	123
2a519311 JB	124	/* must be last because of priv member */
	125	struct cfg80211_bss pub;
	126	};
	127
19957bb3 JB	128	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	129	{
	130	return container_of(pub, struct cfg80211_internal_bss, pub);
	131	}
	132
	133	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	134	{
	135	atomic_inc(&bss->hold);
	136	}
	137
	138	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	139	{
	140	int r = atomic_dec_return(&bss->hold);
	141	WARN_ON(r < 0);
	142	}
	143
	144
79c97e97	145	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	146	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	147
806a9e39 LR	148	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	149
463d0183 JB	150	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
463d0183 JB	151	struct net *net);
55682965	152
667503dd JB	153	static inline void wdev_lock(struct wireless_dev *wdev)
	154	__acquires(wdev)
	155	{
	156	mutex_lock(&wdev->mtx);
	157	__acquire(wdev->mtx);
	158	}
	159
	160	static inline void wdev_unlock(struct wireless_dev *wdev)
	161	__releases(wdev)
	162	{
	163	__release(wdev->mtx);
	164	mutex_unlock(&wdev->mtx);
	165	}
	166
5fe231e8	167	#define ASSERT_RDEV_LOCK(rdev) ASSERT_RTNL()
46a5ebaf	168	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	169
dbbae26a MK	170	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	171	{
c5a7e582	172	ASSERT_RTNL();
dbbae26a MK	173
	174	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	175	rdev->num_running_ifaces > 0;
	176	}
	177
667503dd JB	178	enum cfg80211_event_type {
	179	EVENT_CONNECT_RESULT,
	180	EVENT_ROAMED,
	181	EVENT_DISCONNECTED,
	182	EVENT_IBSS_JOINED,
	183	};
	184
	185	struct cfg80211_event {
	186	struct list_head list;
	187	enum cfg80211_event_type type;
	188
	189	union {
	190	struct {
	191	u8 bssid[ETH_ALEN];
	192	const u8 *req_ie;
	193	const u8 *resp_ie;
	194	size_t req_ie_len;
	195	size_t resp_ie_len;
	196	u16 status;
	197	} cr;
	198	struct {
667503dd JB	199	const u8 *req_ie;
	200	const u8 *resp_ie;
	201	size_t req_ie_len;
	202	size_t resp_ie_len;
adbde344	203	struct cfg80211_bss *bss;
667503dd JB	204	} rm;
	205	struct {
	206	const u8 *ie;
	207	size_t ie_len;
	208	u16 reason;
	209	} dc;
	210	struct {
	211	u8 bssid[ETH_ALEN];
	212	} ij;
	213	};
	214	};
	215
fffd0934 JB	216	struct cfg80211_cached_keys {
	217	struct key_params params[6];
	218	u8 data[6][WLAN_MAX_KEY_LEN];
	219	int def, defmgmt;
	220	};
	221
26ab9a0c MK	222	enum cfg80211_chan_mode {
	223	CHAN_MODE_UNDEFINED,
	224	CHAN_MODE_SHARED,
	225	CHAN_MODE_EXCLUSIVE,
	226	};
	227
37c73b5f BG	228	struct cfg80211_beacon_registration {
	229	struct list_head list;
	230	u32 nlportid;
	231	};
667503dd	232
704232c2	233	/* free object */
79c97e97	234	extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	235
79c97e97	236	extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
55682965 JB	237	char *newname);
55682965 JB	238
8318d78a	239	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	240
2a519311	241	void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
cb3a8eec DW	242	void cfg80211_bss_age(struct cfg80211_registered_device *dev,
cb3a8eec DW	243	unsigned long age_secs);
2a519311	244
04a773ad	245	/* IBSS */
667503dd JB	246	int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
667503dd JB	247	struct net_device *dev,
fffd0934 JB	248	struct cfg80211_ibss_params *params,
fffd0934 JB	249	struct cfg80211_cached_keys *connkeys);
04a773ad JB	250	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
04a773ad JB	251	struct net_device *dev,
fffd0934 JB	252	struct cfg80211_ibss_params *params,
fffd0934 JB	253	struct cfg80211_cached_keys *connkeys);
9d308429	254	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	255	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	256	struct net_device *dev, bool nowext);
04a773ad	257	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	258	struct net_device *dev, bool nowext);
667503dd	259	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid);
fffd0934 JB	260	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	261	struct wireless_dev *wdev);
04a773ad	262
29cbe68c JB	263	/* mesh */
29cbe68c JB	264	extern const struct mesh_config default_mesh_config;
c80d545d	265	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	266	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	267	struct net_device *dev,
cc1d2806	268	struct mesh_setup *setup,
29cbe68c JB	269	const struct mesh_config *conf);
	270	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	271	struct net_device *dev,
cc1d2806	272	struct mesh_setup *setup,
29cbe68c JB	273	const struct mesh_config *conf);
	274	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
	275	struct net_device *dev);
683b6d3b JB	276	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	277	struct wireless_dev *wdev,
	278	struct cfg80211_chan_def *chandef);
29cbe68c	279
60771780 MK	280	/* AP */
	281	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
	282	struct net_device *dev);
	283
19957bb3 JB	284	/* MLME */
19957bb3 JB	285	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
91bf9b26 JB	286	struct net_device *dev,
	287	struct ieee80211_channel *chan,
	288	enum nl80211_auth_type auth_type,
	289	const u8 *bssid,
19957bb3	290	const u8 *ssid, int ssid_len,
fffd0934	291	const u8 *ie, int ie_len,
e39e5b5e JM	292	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	293	const u8 *sae_data, int sae_data_len);
19957bb3	294	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
f62fab73 JB	295	struct net_device *dev,
	296	struct ieee80211_channel *chan,
	297	const u8 *bssid,
3e5d7649	298	const u8 *ssid, int ssid_len,
f62fab73	299	struct cfg80211_assoc_request *req);
19957bb3 JB	300	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
19957bb3 JB	301	struct net_device dev, const u8 bssid,
d5cdfacb JM	302	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	303	bool local_state_change);
19957bb3 JB	304	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	305	struct net_device dev, const u8 bssid,
d5cdfacb JM	306	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	307	bool local_state_change);
19957bb3 JB	308	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	309	struct net_device *dev);
667503dd JB	310	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	311	const u8 *req_ie, size_t req_ie_len,
	312	const u8 *resp_ie, size_t resp_ie_len,
df7fc0f9 JB	313	u16 status, bool wextev,
df7fc0f9 JB	314	struct cfg80211_bss *bss);
2e161f78 JB	315	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	316	u16 frame_type, const u8 *match_data,
	317	int match_len);
	318	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	319	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	320	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994	321	struct wireless_dev *wdev,
f7ca38df	322	struct ieee80211_channel *chan, bool offchan,
42d97a59 JB	323	unsigned int wait, const u8 *buf, size_t len,
42d97a59 JB	324	bool no_cck, bool dont_wait_for_ack, u64 *cookie);
7e7c8926 BG	325	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	326	const struct ieee80211_ht_cap *ht_capa_mask);
ee2aca34 JB	327	void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
ee2aca34 JB	328	const struct ieee80211_vht_cap *vht_capa_mask);
19957bb3	329
b23aa676 SO	330	/* SME */
	331	int cfg80211_connect(struct cfg80211_registered_device *rdev,
	332	struct net_device *dev,
fffd0934	333	struct cfg80211_connect_params *connect,
83739b03 JB	334	struct cfg80211_cached_keys *connkeys,
83739b03 JB	335	const u8 *prev_bssid);
b23aa676	336	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	337	struct net_device *dev, u16 reason,
f2129354 JB	338	bool wextev);
ed9d0102	339	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	340	struct cfg80211_bss *bss,
667503dd JB	341	const u8 *req_ie, size_t req_ie_len,
667503dd JB	342	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	343	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	344	struct wireless_dev *wdev);
b23aa676	345
6829c878	346	void cfg80211_conn_work(struct work_struct *work);
7d930bc3	347	void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
f401a6f7	348	bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
6829c878	349
08645126	350	/* internal helpers */
38ba3c57	351	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	352	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	353	struct key_params *params, int key_idx,
e31b8213	354	bool pairwise, const u8 *mac_addr);
667503dd	355	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
6829c878 JB	356	size_t ie_len, u16 reason, bool from_ap);
	357	void cfg80211_sme_scan_done(struct net_device *dev);
	358	void cfg80211_sme_rx_auth(struct net_device dev, const u8 buf, size_t len);
95de817b JB	359	void cfg80211_sme_disassoc(struct net_device *dev,
95de817b JB	360	struct cfg80211_internal_bss *bss);
667503dd	361	void __cfg80211_scan_done(struct work_struct *wk);
01a0ac41	362	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
807f8a8c LC	363	void __cfg80211_sched_scan_results(struct work_struct *wk);
	364	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	365	bool driver_initiated);
fffd0934	366	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	367	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	368	struct net_device *dev, enum nl80211_iftype ntype,
	369	u32 flags, struct vif_params params);
	370	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	371	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	372
d4e50c59 MK	373	int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
	374	struct wireless_dev *wdev,
	375	enum nl80211_iftype iftype,
	376	struct ieee80211_channel *chan,
11c4a075 SW	377	enum cfg80211_chan_mode chanmode,
11c4a075 SW	378	u8 radar_detect);
d4e50c59	379
04f39047 SW	380	/**
	381	* cfg80211_chandef_dfs_required - checks if radar detection is required
	382	* @wiphy: the wiphy to validate against
	383	* @chandef: the channel definition to check
	384	* Return: 1 if radar detection is required, 0 if it is not, < 0 on error
	385	*/
	386	int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
	387	const struct cfg80211_chan_def *c);
	388
	389	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	390	const struct cfg80211_chan_def *chandef,
	391	enum nl80211_dfs_state dfs_state);
	392
	393	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	394
	395
d4e50c59 MK	396	static inline int
	397	cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
	398	struct wireless_dev *wdev,
	399	enum nl80211_iftype iftype)
	400	{
	401	return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
11c4a075	402	CHAN_MODE_UNDEFINED, 0);
d4e50c59	403	}
7527a782 JB	404
	405	static inline int
	406	cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
	407	enum nl80211_iftype iftype)
	408	{
	409	return cfg80211_can_change_interface(rdev, NULL, iftype);
	410	}
	411
d4e50c59 MK	412	static inline int
	413	cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
	414	struct wireless_dev *wdev,
	415	struct ieee80211_channel *chan,
	416	enum cfg80211_chan_mode chanmode)
	417	{
	418	return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
11c4a075	419	chan, chanmode, 0);
d4e50c59 MK	420	}
d4e50c59 MK	421
04f39047 SW	422	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	423	{
	424	unsigned long end = jiffies;
	425
	426	if (end >= start)
	427	return jiffies_to_msecs(end - start);
	428
	429	return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
	430	}
	431
26ab9a0c	432	void
8e95ea49	433	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c MK	434	struct ieee80211_channel **chan,
	435	enum cfg80211_chan_mode *chanmode);
	436
e8c9bd5b	437	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	438	struct cfg80211_chan_def *chandef);
59bbb6f7	439
34850ab2 JB	440	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	441	const u8 *rates, unsigned int n_rates,
	442	u32 *mask);
	443
56d1893d JB	444	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
	445	u32 beacon_int);
	446
dbbae26a MK	447	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	448	enum nl80211_iftype iftype, int num);
	449
81256969 SG	450	void cfg80211_leave(struct cfg80211_registered_device *rdev,
	451	struct wireless_dev *wdev);
	452
f9f47529 JB	453	void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
	454	struct wireless_dev *wdev);
	455
d4e50c59 MK	456	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	457
f7969969 JB	458	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	459	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	460	#else
	461	/*
	462	* Trick to enable using it as a condition,
	463	* and also not give a warning when it's
	464	* not used that way.
	465	*/
	466	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	467	#endif
	468
704232c2	469	#endif /* __NET_WIRELESS_CORE_H */