[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/mutex.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;
	/* we hold this mutex during any call so that
	 * we cannot do multiple calls at once, and also
	 * to avoid the deregister call to proceed while
	 * any call is in progress */
	struct mutex mtx;

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

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

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

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

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

	struct list_head beacon_registrations;
	spinlock_t beacon_registrations_lock;

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

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

	struct mutex sched_scan_mtx;

#ifdef CONFIG_NL80211_TESTMODE
	struct genl_info *testmode_info;
#endif

	struct work_struct conn_work;
	struct work_struct event_work;

	struct cfg80211_wowlan *wowlan;

	struct delayed_work dfs_update_channels_wk;

	/* 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 mutex cfg80211_mutex;
extern struct list_head cfg80211_rdev_list;
extern int cfg80211_rdev_list_generation;

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

struct cfg80211_internal_bss {
	struct list_head list;
	struct 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);

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

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

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

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

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

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

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

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

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

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

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

struct cfg80211_event {
	struct list_head list;
	enum cfg80211_event_type type;

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

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

enum cfg80211_chan_mode {
	CHAN_MODE_UNDEFINED,
	CHAN_MODE_SHARED,
	CHAN_MODE_EXCLUSIVE,
};

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

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

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

void ieee80211_set_bitrate_flags(struct wiphy *wiphy);

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

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

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

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

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

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

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

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

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

/**
 * 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);

#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10

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

#endif /* __NET_WIRELESS_CORE_H */
Commit	Line	Data
704232c2 JB	1	/*
	2	* Wireless configuration interface internals.
	3	*
5f2aa25e	4	* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
704232c2 JB	5	*/
	6	#ifndef __NET_WIRELESS_CORE_H
	7	#define __NET_WIRELESS_CORE_H
	8	#include <linux/mutex.h>
	9	#include <linux/list.h>
	10	#include <linux/netdevice.h>
2a519311	11	#include <linux/rbtree.h>
1ac61302	12	#include <linux/debugfs.h>
1f87f7d3 JB	13	#include <linux/rfkill.h>
1f87f7d3 JB	14	#include <linux/workqueue.h>
c5a7e582	15	#include <linux/rtnetlink.h>
704232c2	16	#include <net/genetlink.h>
704232c2	17	#include <net/cfg80211.h>
3f2355cb	18	#include "reg.h"
704232c2	19
f4173766 JB	20
	21	#define WIPHY_IDX_INVALID -1
	22
704232c2	23	struct cfg80211_registered_device {
3dcf670b	24	const struct cfg80211_ops *ops;
704232c2 JB	25	struct list_head list;
	26	/* we hold this mutex during any call so that
	27	* we cannot do multiple calls at once, and also
	28	* to avoid the deregister call to proceed while
	29	* any call is in progress */
	30	struct mutex mtx;
	31
1f87f7d3 JB	32	/* rfkill support */
	33	struct rfkill_ops rfkill_ops;
	34	struct rfkill *rfkill;
	35	struct work_struct rfkill_sync;
	36
3f2355cb LR	37	/* ISO / IEC 3166 alpha2 for which this device is receiving
	38	* country IEs on, this can help disregard country IEs from APs
	39	* on the same alpha2 quickly. The alpha2 may differ from
	40	* cfg80211_regdomain's alpha2 when an intersection has occurred.
	41	* If the AP is reconfigured this can also be used to tell us if
	42	* the country on the country IE changed. */
	43	char country_ie_alpha2[2];
	44
	45	/* If a Country IE has been received this tells us the environment
	46	* which its telling us its in. This defaults to ENVIRON_ANY */
	47	enum environment_cap env;
	48
704232c2	49	/* wiphy index, internal only */
b5850a7a	50	int wiphy_idx;
704232c2	51
89a54e48	52	/* associated wireless interfaces */
704232c2	53	struct mutex devlist_mtx;
5f2aa25e	54	/* protected by devlist_mtx or RCU */
89a54e48 JB	55	struct list_head wdev_list;
89a54e48 JB	56	int devlist_generation, wdev_id;
ad002395 JB	57	int opencount; /* also protected by devlist_mtx */
ad002395 JB	58	wait_queue_head_t dev_wait;
704232c2	59
37c73b5f BG	60	struct list_head beacon_registrations;
37c73b5f BG	61	spinlock_t beacon_registrations_lock;
5e760230	62
c5a7e582	63	/* protected by RTNL only */
dbbae26a MK	64	int num_running_ifaces;
	65	int num_running_monitor_ifaces;
	66
2a519311 JB	67	/* BSSes/scanning */
	68	spinlock_t bss_lock;
	69	struct list_head bss_list;
	70	struct rb_root bss_tree;
	71	u32 bss_generation;
	72	struct cfg80211_scan_request scan_req; / protected by RTNL */
807f8a8c	73	struct cfg80211_sched_scan_request *sched_scan_req;
cb3a8eec	74	unsigned long suspend_at;
667503dd	75	struct work_struct scan_done_wk;
807f8a8c	76	struct work_struct sched_scan_results_wk;
2a519311	77
c10841ca LC	78	struct mutex sched_scan_mtx;
c10841ca LC	79
aff89a9b JB	80	#ifdef CONFIG_NL80211_TESTMODE
	81	struct genl_info *testmode_info;
	82	#endif
	83
6829c878	84	struct work_struct conn_work;
667503dd	85	struct work_struct event_work;
6829c878	86
ff1b6e69 JB	87	struct cfg80211_wowlan *wowlan;
ff1b6e69 JB	88
04f39047 SW	89	struct delayed_work dfs_update_channels_wk;
04f39047 SW	90
704232c2 JB	91	/* must be last because of the way we do wiphy_priv(),
704232c2 JB	92	* and it should at least be aligned to NETDEV_ALIGN */
1c06ef98	93	struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2 JB	94	};
	95
	96	static inline
	97	struct cfg80211_registered_device wiphy_to_dev(struct wiphy wiphy)
	98	{
	99	BUG_ON(!wiphy);
	100	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	101	}
	102
ff1b6e69 JB	103	static inline void
	104	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	105	{
	106	int i;
	107
	108	if (!rdev->wowlan)
	109	return;
	110	for (i = 0; i < rdev->wowlan->n_patterns; i++)
	111	kfree(rdev->wowlan->patterns[i].mask);
	112	kfree(rdev->wowlan->patterns);
2a0e047e JB	113	if (rdev->wowlan->tcp && rdev->wowlan->tcp->sock)
	114	sock_release(rdev->wowlan->tcp->sock);
	115	kfree(rdev->wowlan->tcp);
ff1b6e69 JB	116	kfree(rdev->wowlan);
ff1b6e69 JB	117	}
e60d7443 AB	118
e60d7443 AB	119	extern struct workqueue_struct *cfg80211_wq;
a1794390	120	extern struct mutex cfg80211_mutex;
79c97e97	121	extern struct list_head cfg80211_rdev_list;
f5ea9120	122	extern int cfg80211_rdev_list_generation;
704232c2	123
46a5ebaf JB	124	static inline void assert_cfg80211_lock(void)
	125	{
	126	lockdep_assert_held(&cfg80211_mutex);
	127	}
761cf7ec	128
2a519311 JB	129	struct cfg80211_internal_bss {
2a519311 JB	130	struct list_head list;
776b3580	131	struct list_head hidden_list;
2a519311 JB	132	struct rb_node rbn;
2a519311 JB	133	unsigned long ts;
776b3580	134	unsigned long refcount;
19957bb3	135	atomic_t hold;
a08c1c1a	136
2a519311 JB	137	/* must be last because of priv member */
	138	struct cfg80211_bss pub;
	139	};
	140
19957bb3 JB	141	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	142	{
	143	return container_of(pub, struct cfg80211_internal_bss, pub);
	144	}
	145
	146	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	147	{
	148	atomic_inc(&bss->hold);
	149	}
	150
	151	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	152	{
	153	int r = atomic_dec_return(&bss->hold);
	154	WARN_ON(r < 0);
	155	}
	156
	157
79c97e97	158	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	159	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	160
79c97e97	161	/* requires cfg80211_rdev_mutex to be held! */
806a9e39 LR	162	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	163
55682965 JB	164	/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
55682965 JB	165	extern struct cfg80211_registered_device *
463d0183 JB	166	cfg80211_get_dev_from_ifindex(struct net *net, int ifindex);
	167
	168	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
	169	struct net *net);
55682965	170
79c97e97	171	static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev)
667503dd	172	{
79c97e97	173	mutex_lock(&rdev->mtx);
667503dd JB	174	}
667503dd JB	175
79c97e97	176	static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev)
4d0c8aea	177	{
79c97e97 JB	178	BUG_ON(IS_ERR(rdev) \|\| !rdev);
79c97e97 JB	179	mutex_unlock(&rdev->mtx);
4d0c8aea	180	}
55682965	181
667503dd JB	182	static inline void wdev_lock(struct wireless_dev *wdev)
	183	__acquires(wdev)
	184	{
	185	mutex_lock(&wdev->mtx);
	186	__acquire(wdev->mtx);
	187	}
	188
	189	static inline void wdev_unlock(struct wireless_dev *wdev)
	190	__releases(wdev)
	191	{
	192	__release(wdev->mtx);
	193	mutex_unlock(&wdev->mtx);
	194	}
	195
46a5ebaf JB	196	#define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
46a5ebaf JB	197	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	198
dbbae26a MK	199	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	200	{
c5a7e582	201	ASSERT_RTNL();
dbbae26a MK	202
	203	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	204	rdev->num_running_ifaces > 0;
	205	}
	206
667503dd JB	207	enum cfg80211_event_type {
	208	EVENT_CONNECT_RESULT,
	209	EVENT_ROAMED,
	210	EVENT_DISCONNECTED,
	211	EVENT_IBSS_JOINED,
	212	};
	213
	214	struct cfg80211_event {
	215	struct list_head list;
	216	enum cfg80211_event_type type;
	217
	218	union {
	219	struct {
	220	u8 bssid[ETH_ALEN];
	221	const u8 *req_ie;
	222	const u8 *resp_ie;
	223	size_t req_ie_len;
	224	size_t resp_ie_len;
	225	u16 status;
	226	} cr;
	227	struct {
667503dd JB	228	const u8 *req_ie;
	229	const u8 *resp_ie;
	230	size_t req_ie_len;
	231	size_t resp_ie_len;
adbde344	232	struct cfg80211_bss *bss;
667503dd JB	233	} rm;
	234	struct {
	235	const u8 *ie;
	236	size_t ie_len;
	237	u16 reason;
	238	} dc;
	239	struct {
	240	u8 bssid[ETH_ALEN];
	241	} ij;
	242	};
	243	};
	244
fffd0934 JB	245	struct cfg80211_cached_keys {
	246	struct key_params params[6];
	247	u8 data[6][WLAN_MAX_KEY_LEN];
	248	int def, defmgmt;
	249	};
	250
26ab9a0c MK	251	enum cfg80211_chan_mode {
	252	CHAN_MODE_UNDEFINED,
	253	CHAN_MODE_SHARED,
	254	CHAN_MODE_EXCLUSIVE,
	255	};
	256
37c73b5f BG	257	struct cfg80211_beacon_registration {
	258	struct list_head list;
	259	u32 nlportid;
	260	};
667503dd	261
704232c2	262	/* free object */
79c97e97	263	extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	264
79c97e97	265	extern int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
55682965 JB	266	char *newname);
55682965 JB	267
8318d78a	268	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	269
2a519311	270	void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
cb3a8eec DW	271	void cfg80211_bss_age(struct cfg80211_registered_device *dev,
cb3a8eec DW	272	unsigned long age_secs);
2a519311	273
04a773ad	274	/* IBSS */
667503dd JB	275	int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
667503dd JB	276	struct net_device *dev,
fffd0934 JB	277	struct cfg80211_ibss_params *params,
fffd0934 JB	278	struct cfg80211_cached_keys *connkeys);
04a773ad JB	279	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
04a773ad JB	280	struct net_device *dev,
fffd0934 JB	281	struct cfg80211_ibss_params *params,
fffd0934 JB	282	struct cfg80211_cached_keys *connkeys);
9d308429	283	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	284	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	285	struct net_device *dev, bool nowext);
04a773ad	286	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	287	struct net_device *dev, bool nowext);
667503dd	288	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid);
fffd0934 JB	289	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	290	struct wireless_dev *wdev);
04a773ad	291
29cbe68c JB	292	/* mesh */
29cbe68c JB	293	extern const struct mesh_config default_mesh_config;
c80d545d	294	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	295	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	296	struct net_device *dev,
cc1d2806	297	struct mesh_setup *setup,
29cbe68c JB	298	const struct mesh_config *conf);
	299	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	300	struct net_device *dev,
cc1d2806	301	struct mesh_setup *setup,
29cbe68c JB	302	const struct mesh_config *conf);
	303	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
	304	struct net_device *dev);
683b6d3b JB	305	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	306	struct wireless_dev *wdev,
	307	struct cfg80211_chan_def *chandef);
29cbe68c	308
60771780 MK	309	/* AP */
	310	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
	311	struct net_device *dev);
	312
19957bb3	313	/* MLME */
667503dd JB	314	int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
	315	struct net_device *dev,
	316	struct ieee80211_channel *chan,
	317	enum nl80211_auth_type auth_type,
	318	const u8 *bssid,
	319	const u8 *ssid, int ssid_len,
fffd0934	320	const u8 *ie, int ie_len,
e39e5b5e JM	321	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	322	const u8 *sae_data, int sae_data_len);
19957bb3 JB	323	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
	324	struct net_device dev, struct ieee80211_channel chan,
	325	enum nl80211_auth_type auth_type, const u8 *bssid,
	326	const u8 *ssid, int ssid_len,
fffd0934	327	const u8 *ie, int ie_len,
e39e5b5e JM	328	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	329	const u8 *sae_data, int sae_data_len);
667503dd JB	330	int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
	331	struct net_device *dev,
	332	struct ieee80211_channel *chan,
	333	const u8 bssid, const u8 prev_bssid,
	334	const u8 *ssid, int ssid_len,
	335	const u8 *ie, int ie_len, bool use_mfp,
7e7c8926 BG	336	struct cfg80211_crypto_settings *crypt,
	337	u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
	338	struct ieee80211_ht_cap *ht_capa_mask);
19957bb3 JB	339	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	340	struct net_device dev, struct ieee80211_channel chan,
3e5d7649 JB	341	const u8 bssid, const u8 prev_bssid,
3e5d7649 JB	342	const u8 *ssid, int ssid_len,
19957bb3	343	const u8 *ie, int ie_len, bool use_mfp,
7e7c8926 BG	344	struct cfg80211_crypto_settings *crypt,
	345	u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,
	346	struct ieee80211_ht_cap *ht_capa_mask);
667503dd JB	347	int __cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
667503dd JB	348	struct net_device dev, const u8 bssid,
d5cdfacb JM	349	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	350	bool local_state_change);
19957bb3 JB	351	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
19957bb3 JB	352	struct net_device dev, const u8 bssid,
d5cdfacb JM	353	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	354	bool local_state_change);
19957bb3 JB	355	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	356	struct net_device dev, const u8 bssid,
d5cdfacb JM	357	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	358	bool local_state_change);
19957bb3 JB	359	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	360	struct net_device *dev);
667503dd JB	361	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	362	const u8 *req_ie, size_t req_ie_len,
	363	const u8 *resp_ie, size_t resp_ie_len,
df7fc0f9 JB	364	u16 status, bool wextev,
df7fc0f9 JB	365	struct cfg80211_bss *bss);
2e161f78 JB	366	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	367	u16 frame_type, const u8 *match_data,
	368	int match_len);
	369	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	370	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	371	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994	372	struct wireless_dev *wdev,
f7ca38df	373	struct ieee80211_channel *chan, bool offchan,
42d97a59 JB	374	unsigned int wait, const u8 *buf, size_t len,
42d97a59 JB	375	bool no_cck, bool dont_wait_for_ack, u64 *cookie);
7e7c8926 BG	376	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	377	const struct ieee80211_ht_cap *ht_capa_mask);
19957bb3	378
b23aa676	379	/* SME */
667503dd JB	380	int __cfg80211_connect(struct cfg80211_registered_device *rdev,
667503dd JB	381	struct net_device *dev,
fffd0934	382	struct cfg80211_connect_params *connect,
f401a6f7 JB	383	struct cfg80211_cached_keys *connkeys,
f401a6f7 JB	384	const u8 *prev_bssid);
b23aa676 SO	385	int cfg80211_connect(struct cfg80211_registered_device *rdev,
b23aa676 SO	386	struct net_device *dev,
fffd0934 JB	387	struct cfg80211_connect_params *connect,
fffd0934 JB	388	struct cfg80211_cached_keys *connkeys);
667503dd JB	389	int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
	390	struct net_device *dev, u16 reason,
	391	bool wextev);
b23aa676	392	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	393	struct net_device *dev, u16 reason,
f2129354 JB	394	bool wextev);
ed9d0102	395	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	396	struct cfg80211_bss *bss,
667503dd JB	397	const u8 *req_ie, size_t req_ie_len,
667503dd JB	398	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	399	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	400	struct wireless_dev *wdev);
b23aa676	401
6829c878	402	void cfg80211_conn_work(struct work_struct *work);
7d930bc3	403	void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);
f401a6f7	404	bool cfg80211_sme_failed_reassoc(struct wireless_dev *wdev);
6829c878	405
08645126	406	/* internal helpers */
38ba3c57	407	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	408	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	409	struct key_params *params, int key_idx,
e31b8213	410	bool pairwise, const u8 *mac_addr);
667503dd	411	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
6829c878 JB	412	size_t ie_len, u16 reason, bool from_ap);
	413	void cfg80211_sme_scan_done(struct net_device *dev);
	414	void cfg80211_sme_rx_auth(struct net_device dev, const u8 buf, size_t len);
95de817b JB	415	void cfg80211_sme_disassoc(struct net_device *dev,
95de817b JB	416	struct cfg80211_internal_bss *bss);
667503dd	417	void __cfg80211_scan_done(struct work_struct *wk);
01a0ac41	418	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);
807f8a8c LC	419	void __cfg80211_sched_scan_results(struct work_struct *wk);
	420	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	421	bool driver_initiated);
fffd0934	422	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	423	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	424	struct net_device *dev, enum nl80211_iftype ntype,
	425	u32 flags, struct vif_params params);
	426	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	427	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	428
d4e50c59 MK	429	int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
	430	struct wireless_dev *wdev,
	431	enum nl80211_iftype iftype,
	432	struct ieee80211_channel *chan,
11c4a075 SW	433	enum cfg80211_chan_mode chanmode,
11c4a075 SW	434	u8 radar_detect);
d4e50c59	435
04f39047 SW	436	/**
	437	* cfg80211_chandef_dfs_required - checks if radar detection is required
	438	* @wiphy: the wiphy to validate against
	439	* @chandef: the channel definition to check
	440	* Return: 1 if radar detection is required, 0 if it is not, < 0 on error
	441	*/
	442	int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
	443	const struct cfg80211_chan_def *c);
	444
	445	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	446	const struct cfg80211_chan_def *chandef,
	447	enum nl80211_dfs_state dfs_state);
	448
	449	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	450
	451
d4e50c59 MK	452	static inline int
	453	cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
	454	struct wireless_dev *wdev,
	455	enum nl80211_iftype iftype)
	456	{
	457	return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
11c4a075	458	CHAN_MODE_UNDEFINED, 0);
d4e50c59	459	}
7527a782 JB	460
	461	static inline int
	462	cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
	463	enum nl80211_iftype iftype)
	464	{
	465	return cfg80211_can_change_interface(rdev, NULL, iftype);
	466	}
	467
d4e50c59 MK	468	static inline int
	469	cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
	470	struct wireless_dev *wdev,
	471	struct ieee80211_channel *chan,
	472	enum cfg80211_chan_mode chanmode)
	473	{
	474	return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
11c4a075	475	chan, chanmode, 0);
d4e50c59 MK	476	}
d4e50c59 MK	477
04f39047 SW	478	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	479	{
	480	unsigned long end = jiffies;
	481
	482	if (end >= start)
	483	return jiffies_to_msecs(end - start);
	484
	485	return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
	486	}
	487
26ab9a0c	488	void
8e95ea49	489	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c MK	490	struct ieee80211_channel **chan,
	491	enum cfg80211_chan_mode *chanmode);
	492
e8c9bd5b	493	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	494	struct cfg80211_chan_def *chandef);
59bbb6f7	495
34850ab2 JB	496	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	497	const u8 *rates, unsigned int n_rates,
	498	u32 *mask);
	499
56d1893d JB	500	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
	501	u32 beacon_int);
	502
dbbae26a MK	503	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	504	enum nl80211_iftype iftype, int num);
	505
d4e50c59 MK	506	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	507
f7969969 JB	508	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	509	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	510	#else
	511	/*
	512	* Trick to enable using it as a condition,
	513	* and also not give a warning when it's
	514	* not used that way.
	515	*/
	516	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	517	#endif
	518
704232c2	519	#endif /* __NET_WIRELESS_CORE_H */