[mirror_ubuntu-bionic-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];

	/*
	 * the driver requests the regulatory core to set this regulatory
	 * domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
	 * devices using the regulatory_set_wiphy_regd() API
	 */
	const struct ieee80211_regdomain *requested_regd;

	/* 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;

	struct list_head mlme_unreg;
	spinlock_t mlme_unreg_lock;
	struct work_struct mlme_unreg_wk;

	/* 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 __rcu *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;

	struct work_struct sched_scan_stop_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_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->nd_config);
	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;
	u64 ts_boottime;
	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;
			struct cfg80211_bss *bss;
			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;
			bool locally_generated;
		} dc;
		struct {
			u8 bssid[ETH_ALEN];
			struct ieee80211_channel *channel;
		} ij;
	};
};

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

enum cfg80211_chan_mode {
	CHAN_MODE_UNDEFINED,
	CHAN_MODE_SHARED,
	CHAN_MODE_EXCLUSIVE,
};

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

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

void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);

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

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

void ieee80211_set_bitrate_flags(struct wiphy *wiphy);

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

/* IBSS */
int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
		       struct net_device *dev,
		       struct cfg80211_ibss_params *params,
		       struct cfg80211_cached_keys *connkeys);
void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
			  struct net_device *dev, bool nowext);
int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
			struct net_device *dev, bool nowext);
void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid,
			    struct ieee80211_channel *channel);
int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
			    struct wireless_dev *wdev);

/* mesh */
extern const struct mesh_config default_mesh_config;
extern const struct mesh_setup default_mesh_setup;
int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
			 struct net_device *dev,
			 struct mesh_setup *setup,
			 const struct mesh_config *conf);
int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
		       struct net_device *dev,
		       struct mesh_setup *setup,
		       const struct mesh_config *conf);
int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
			  struct net_device *dev);
int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
			struct net_device *dev);
int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev,
			      struct cfg80211_chan_def *chandef);

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

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

/* MLME */
int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
		       struct net_device *dev,
		       struct ieee80211_channel *chan,
		       enum nl80211_auth_type auth_type,
		       const u8 *bssid,
		       const u8 *ssid, int ssid_len,
		       const u8 *ie, int ie_len,
		       const u8 *key, int key_len, int key_idx,
		       const u8 *sae_data, int sae_data_len);
int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
			struct net_device *dev,
			struct ieee80211_channel *chan,
			const u8 *bssid,
			const u8 *ssid, int ssid_len,
			struct cfg80211_assoc_request *req);
int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
			 struct net_device *dev, const u8 *bssid,
			 const u8 *ie, int ie_len, u16 reason,
			 bool local_state_change);
int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
			   struct net_device *dev, const u8 *bssid,
			   const u8 *ie, int ie_len, u16 reason,
			   bool local_state_change);
void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
			struct net_device *dev);
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
				u16 frame_type, const u8 *match_data,
				int match_len);
void cfg80211_mlme_unreg_wk(struct work_struct *wk);
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);

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

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

void cfg80211_dfs_channels_update_work(struct work_struct *work);

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

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

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

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

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

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

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

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

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

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

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

#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10

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

#endif /* __NET_WIRELESS_CORE_H */
Commit	Line	Data
704232c2 JB	1	/*
	2	* Wireless configuration interface internals.
	3	*
5f2aa25e	4	* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
704232c2 JB	5	*/
	6	#ifndef __NET_WIRELESS_CORE_H
	7	#define __NET_WIRELESS_CORE_H
704232c2 JB	8	#include <linux/list.h>
704232c2 JB	9	#include <linux/netdevice.h>
2a519311	10	#include <linux/rbtree.h>
1ac61302	11	#include <linux/debugfs.h>
1f87f7d3 JB	12	#include <linux/rfkill.h>
1f87f7d3 JB	13	#include <linux/workqueue.h>
c5a7e582	14	#include <linux/rtnetlink.h>
704232c2	15	#include <net/genetlink.h>
704232c2	16	#include <net/cfg80211.h>
3f2355cb	17	#include "reg.h"
704232c2	18
f4173766 JB	19
	20	#define WIPHY_IDX_INVALID -1
	21
704232c2	22	struct cfg80211_registered_device {
3dcf670b	23	const struct cfg80211_ops *ops;
704232c2	24	struct list_head list;
704232c2	25
1f87f7d3 JB	26	/* rfkill support */
	27	struct rfkill_ops rfkill_ops;
	28	struct rfkill *rfkill;
	29	struct work_struct rfkill_sync;
	30
3f2355cb LR	31	/* ISO / IEC 3166 alpha2 for which this device is receiving
	32	* country IEs on, this can help disregard country IEs from APs
	33	* on the same alpha2 quickly. The alpha2 may differ from
	34	* cfg80211_regdomain's alpha2 when an intersection has occurred.
	35	* If the AP is reconfigured this can also be used to tell us if
	36	* the country on the country IE changed. */
	37	char country_ie_alpha2[2];
	38
b0d7aa59 JD	39	/*
	40	* the driver requests the regulatory core to set this regulatory
	41	* domain as the wiphy's. Only used for %REGULATORY_WIPHY_SELF_MANAGED
	42	* devices using the regulatory_set_wiphy_regd() API
	43	*/
	44	const struct ieee80211_regdomain *requested_regd;
	45
3f2355cb LR	46	/* If a Country IE has been received this tells us the environment
	47	* which its telling us its in. This defaults to ENVIRON_ANY */
	48	enum environment_cap env;
	49
704232c2	50	/* wiphy index, internal only */
b5850a7a	51	int wiphy_idx;
704232c2	52
5fe231e8	53	/* associated wireless interfaces, protected by rtnl or RCU */
89a54e48 JB	54	struct list_head wdev_list;
89a54e48 JB	55	int devlist_generation, wdev_id;
ad002395 JB	56	int opencount; /* also protected by devlist_mtx */
ad002395 JB	57	wait_queue_head_t dev_wait;
704232c2	58
37c73b5f BG	59	struct list_head beacon_registrations;
37c73b5f BG	60	spinlock_t beacon_registrations_lock;
5e760230	61
33d8783c JB	62	struct list_head mlme_unreg;
	63	spinlock_t mlme_unreg_lock;
	64	struct work_struct mlme_unreg_wk;
	65
c5a7e582	66	/* protected by RTNL only */
dbbae26a MK	67	int num_running_ifaces;
	68	int num_running_monitor_ifaces;
	69
2a519311 JB	70	/* BSSes/scanning */
	71	spinlock_t bss_lock;
	72	struct list_head bss_list;
	73	struct rb_root bss_tree;
	74	u32 bss_generation;
	75	struct cfg80211_scan_request scan_req; / protected by RTNL */
f9d15d16	76	struct sk_buff *scan_msg;
31a60ed1	77	struct cfg80211_sched_scan_request __rcu *sched_scan_req;
cb3a8eec	78	unsigned long suspend_at;
667503dd	79	struct work_struct scan_done_wk;
807f8a8c	80	struct work_struct sched_scan_results_wk;
2a519311	81
ad7e718c	82	struct genl_info *cur_cmd_info;
aff89a9b	83
6829c878	84	struct work_struct conn_work;
667503dd	85	struct work_struct event_work;
6829c878	86
04f39047 SW	87	struct delayed_work dfs_update_channels_wk;
04f39047 SW	88
5de17984 AS	89	/* netlink port which started critical protocol (0 means not started) */
	90	u32 crit_proto_nlportid;
	91
be29b99a AK	92	struct cfg80211_coalesce *coalesce;
be29b99a AK	93
78f22b6a JB	94	spinlock_t destroy_list_lock;
	95	struct list_head destroy_list;
	96	struct work_struct destroy_work;
	97
93a1e86c JR	98	struct work_struct sched_scan_stop_wk;
93a1e86c JR	99
704232c2 JB	100	/* must be last because of the way we do wiphy_priv(),
704232c2 JB	101	* and it should at least be aligned to NETDEV_ALIGN */
1c06ef98	102	struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2 JB	103	};
	104
	105	static inline
f26cbf40	106	struct cfg80211_registered_device wiphy_to_rdev(struct wiphy wiphy)
704232c2 JB	107	{
	108	BUG_ON(!wiphy);
	109	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	110	}
	111
ff1b6e69 JB	112	static inline void
	113	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	114	{
6abb9cb9	115	#ifdef CONFIG_PM
ff1b6e69 JB	116	int i;
ff1b6e69 JB	117
6abb9cb9	118	if (!rdev->wiphy.wowlan_config)
ff1b6e69	119	return;
6abb9cb9 JB	120	for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
	121	kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
	122	kfree(rdev->wiphy.wowlan_config->patterns);
	123	if (rdev->wiphy.wowlan_config->tcp &&
	124	rdev->wiphy.wowlan_config->tcp->sock)
	125	sock_release(rdev->wiphy.wowlan_config->tcp->sock);
	126	kfree(rdev->wiphy.wowlan_config->tcp);
8cd4d456	127	kfree(rdev->wiphy.wowlan_config->nd_config);
6abb9cb9 JB	128	kfree(rdev->wiphy.wowlan_config);
6abb9cb9 JB	129	#endif
ff1b6e69	130	}
e60d7443 AB	131
e60d7443 AB	132	extern struct workqueue_struct *cfg80211_wq;
79c97e97	133	extern struct list_head cfg80211_rdev_list;
f5ea9120	134	extern int cfg80211_rdev_list_generation;
704232c2	135
2a519311 JB	136	struct cfg80211_internal_bss {
2a519311 JB	137	struct list_head list;
776b3580	138	struct list_head hidden_list;
2a519311	139	struct rb_node rbn;
6e19bc4b	140	u64 ts_boottime;
2a519311	141	unsigned long ts;
776b3580	142	unsigned long refcount;
19957bb3	143	atomic_t hold;
a08c1c1a	144
2a519311 JB	145	/* must be last because of priv member */
	146	struct cfg80211_bss pub;
	147	};
	148
19957bb3 JB	149	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	150	{
	151	return container_of(pub, struct cfg80211_internal_bss, pub);
	152	}
	153
	154	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	155	{
	156	atomic_inc(&bss->hold);
	157	}
	158
	159	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	160	{
	161	int r = atomic_dec_return(&bss->hold);
	162	WARN_ON(r < 0);
	163	}
	164
	165
79c97e97	166	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	167	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	168
806a9e39 LR	169	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	170
463d0183 JB	171	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
463d0183 JB	172	struct net *net);
55682965	173
667503dd JB	174	static inline void wdev_lock(struct wireless_dev *wdev)
	175	__acquires(wdev)
	176	{
	177	mutex_lock(&wdev->mtx);
	178	__acquire(wdev->mtx);
	179	}
	180
	181	static inline void wdev_unlock(struct wireless_dev *wdev)
	182	__releases(wdev)
	183	{
	184	__release(wdev->mtx);
	185	mutex_unlock(&wdev->mtx);
	186	}
	187
46a5ebaf	188	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	189
dbbae26a MK	190	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	191	{
c5a7e582	192	ASSERT_RTNL();
dbbae26a MK	193
	194	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	195	rdev->num_running_ifaces > 0;
	196	}
	197
667503dd JB	198	enum cfg80211_event_type {
	199	EVENT_CONNECT_RESULT,
	200	EVENT_ROAMED,
	201	EVENT_DISCONNECTED,
	202	EVENT_IBSS_JOINED,
f04c2203	203	EVENT_STOPPED,
667503dd JB	204	};
	205
	206	struct cfg80211_event {
	207	struct list_head list;
	208	enum cfg80211_event_type type;
	209
	210	union {
	211	struct {
	212	u8 bssid[ETH_ALEN];
	213	const u8 *req_ie;
	214	const u8 *resp_ie;
	215	size_t req_ie_len;
	216	size_t resp_ie_len;
e7054989	217	struct cfg80211_bss *bss;
667503dd JB	218	u16 status;
	219	} cr;
	220	struct {
667503dd JB	221	const u8 *req_ie;
	222	const u8 *resp_ie;
	223	size_t req_ie_len;
	224	size_t resp_ie_len;
adbde344	225	struct cfg80211_bss *bss;
667503dd JB	226	} rm;
	227	struct {
	228	const u8 *ie;
	229	size_t ie_len;
	230	u16 reason;
80279fb7	231	bool locally_generated;
667503dd JB	232	} dc;
	233	struct {
	234	u8 bssid[ETH_ALEN];
fe94f3a4	235	struct ieee80211_channel *channel;
667503dd JB	236	} ij;
	237	};
	238	};
	239
fffd0934 JB	240	struct cfg80211_cached_keys {
	241	struct key_params params[6];
	242	u8 data[6][WLAN_MAX_KEY_LEN];
	243	int def, defmgmt;
	244	};
	245
26ab9a0c MK	246	enum cfg80211_chan_mode {
	247	CHAN_MODE_UNDEFINED,
	248	CHAN_MODE_SHARED,
	249	CHAN_MODE_EXCLUSIVE,
	250	};
	251
37c73b5f BG	252	struct cfg80211_beacon_registration {
	253	struct list_head list;
	254	u32 nlportid;
	255	};
667503dd	256
78f22b6a JB	257	struct cfg80211_iface_destroy {
	258	struct list_head list;
	259	u32 nlportid;
	260	};
	261
	262	void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
	263
704232c2	264	/* free object */
c1b1203d	265	void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	266
c1b1203d JP	267	int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
c1b1203d JP	268	char *newname);
55682965	269
8318d78a	270	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	271
1b8ec87a ZG	272	void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
1b8ec87a ZG	273	void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
cb3a8eec	274	unsigned long age_secs);
2a519311	275
04a773ad JB	276	/* IBSS */
	277	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
	278	struct net_device *dev,
fffd0934 JB	279	struct cfg80211_ibss_params *params,
fffd0934 JB	280	struct cfg80211_cached_keys *connkeys);
9d308429	281	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	282	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	283	struct net_device *dev, bool nowext);
04a773ad	284	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	285	struct net_device *dev, bool nowext);
fe94f3a4 AQ	286	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid,
fe94f3a4 AQ	287	struct ieee80211_channel *channel);
fffd0934 JB	288	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	289	struct wireless_dev *wdev);
04a773ad	290
29cbe68c JB	291	/* mesh */
29cbe68c JB	292	extern const struct mesh_config default_mesh_config;
c80d545d	293	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	294	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	295	struct net_device *dev,
cc1d2806	296	struct mesh_setup *setup,
29cbe68c JB	297	const struct mesh_config *conf);
	298	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	299	struct net_device *dev,
cc1d2806	300	struct mesh_setup *setup,
29cbe68c	301	const struct mesh_config *conf);
f04c2203 MK	302	int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
f04c2203 MK	303	struct net_device *dev);
29cbe68c JB	304	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	305	struct net_device *dev);
683b6d3b JB	306	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	307	struct wireless_dev *wdev,
	308	struct cfg80211_chan_def *chandef);
29cbe68c	309
6e0bd6c3 RL	310	/* OCB */
	311	int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	312	struct net_device *dev,
	313	struct ocb_setup *setup);
	314	int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	315	struct net_device *dev,
	316	struct ocb_setup *setup);
	317	int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	318	struct net_device *dev);
	319	int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	320	struct net_device *dev);
	321
60771780	322	/* AP */
f04c2203 MK	323	int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
f04c2203 MK	324	struct net_device *dev, bool notify);
60771780	325	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
7c8d5e03	326	struct net_device *dev, bool notify);
60771780	327
19957bb3 JB	328	/* MLME */
19957bb3 JB	329	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
91bf9b26 JB	330	struct net_device *dev,
	331	struct ieee80211_channel *chan,
	332	enum nl80211_auth_type auth_type,
	333	const u8 *bssid,
19957bb3	334	const u8 *ssid, int ssid_len,
fffd0934	335	const u8 *ie, int ie_len,
e39e5b5e JM	336	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	337	const u8 *sae_data, int sae_data_len);
19957bb3	338	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
f62fab73 JB	339	struct net_device *dev,
	340	struct ieee80211_channel *chan,
	341	const u8 *bssid,
3e5d7649	342	const u8 *ssid, int ssid_len,
f62fab73	343	struct cfg80211_assoc_request *req);
19957bb3 JB	344	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
19957bb3 JB	345	struct net_device dev, const u8 bssid,
d5cdfacb JM	346	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	347	bool local_state_change);
19957bb3 JB	348	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	349	struct net_device dev, const u8 bssid,
d5cdfacb JM	350	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	351	bool local_state_change);
19957bb3 JB	352	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	353	struct net_device *dev);
2e161f78 JB	354	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	355	u16 frame_type, const u8 *match_data,
	356	int match_len);
33d8783c	357	void cfg80211_mlme_unreg_wk(struct work_struct *wk);
2e161f78 JB	358	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	359	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	360	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994	361	struct wireless_dev *wdev,
b176e629 AO	362	struct cfg80211_mgmt_tx_params *params,
b176e629 AO	363	u64 *cookie);
7e7c8926 BG	364	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	365	const struct ieee80211_ht_cap *ht_capa_mask);
ee2aca34 JB	366	void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
ee2aca34 JB	367	const struct ieee80211_vht_cap *vht_capa_mask);
19957bb3	368
ceca7b71	369	/* SME events */
b23aa676 SO	370	int cfg80211_connect(struct cfg80211_registered_device *rdev,
b23aa676 SO	371	struct net_device *dev,
fffd0934	372	struct cfg80211_connect_params *connect,
83739b03 JB	373	struct cfg80211_cached_keys *connkeys,
83739b03 JB	374	const u8 *prev_bssid);
ceca7b71 JB	375	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	376	const u8 *req_ie, size_t req_ie_len,
	377	const u8 *resp_ie, size_t resp_ie_len,
	378	u16 status, bool wextev,
	379	struct cfg80211_bss *bss);
	380	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
	381	size_t ie_len, u16 reason, bool from_ap);
b23aa676	382	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	383	struct net_device *dev, u16 reason,
f2129354 JB	384	bool wextev);
ed9d0102	385	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	386	struct cfg80211_bss *bss,
667503dd JB	387	const u8 *req_ie, size_t req_ie_len,
667503dd JB	388	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	389	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	390	struct wireless_dev *wdev);
b23aa676	391
ceca7b71	392	/* SME implementation */
6829c878	393	void cfg80211_conn_work(struct work_struct *work);
ceca7b71 JB	394	void cfg80211_sme_scan_done(struct net_device *dev);
	395	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
	396	void cfg80211_sme_rx_auth(struct wireless_dev wdev, const u8 buf, size_t len);
	397	void cfg80211_sme_disassoc(struct wireless_dev *wdev);
	398	void cfg80211_sme_deauth(struct wireless_dev *wdev);
	399	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
	400	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
6829c878	401
08645126	402	/* internal helpers */
38ba3c57	403	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	404	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	405	struct key_params *params, int key_idx,
e31b8213	406	bool pairwise, const u8 *mac_addr);
667503dd	407	void __cfg80211_scan_done(struct work_struct *wk);
f9d15d16 JB	408	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
f9d15d16 JB	409	bool send_message);
807f8a8c LC	410	void __cfg80211_sched_scan_results(struct work_struct *wk);
	411	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	412	bool driver_initiated);
fffd0934	413	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	414	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	415	struct net_device *dev, enum nl80211_iftype ntype,
	416	u32 flags, struct vif_params params);
	417	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	418	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	419
fe7c3a1f JD	420	/**
	421	* cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
	422	* @wiphy: the wiphy to validate against
	423	* @chandef: the channel definition to check
	424	*
	425	* Checks if chandef is usable and we can/need start CAC on such channel.
	426	*
	427	* Return: Return true if all channels available and at least
	428	* one channel require CAC (NL80211_DFS_USABLE)
	429	*/
	430	bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
	431	const struct cfg80211_chan_def *chandef);
	432
04f39047 SW	433	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	434	const struct cfg80211_chan_def *chandef,
	435	enum nl80211_dfs_state dfs_state);
	436
	437	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	438
31559f35 JD	439	unsigned int
	440	cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
	441	const struct cfg80211_chan_def *chandef);
04f39047	442
04f39047 SW	443	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	444	{
	445	unsigned long end = jiffies;
	446
	447	if (end >= start)
	448	return jiffies_to_msecs(end - start);
	449
0ce12026	450	return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
04f39047 SW	451	}
04f39047 SW	452
26ab9a0c	453	void
8e95ea49	454	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c	455	struct ieee80211_channel **chan,
9e0e2961 MK	456	enum cfg80211_chan_mode *chanmode,
9e0e2961 MK	457	u8 *radar_detect);
26ab9a0c	458
e8c9bd5b	459	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	460	struct cfg80211_chan_def *chandef);
59bbb6f7	461
34850ab2 JB	462	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	463	const u8 *rates, unsigned int n_rates,
	464	u32 *mask);
	465
56d1893d JB	466	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
	467	u32 beacon_int);
	468
dbbae26a MK	469	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	470	enum nl80211_iftype iftype, int num);
	471
f04c2203 MK	472	void __cfg80211_leave(struct cfg80211_registered_device *rdev,
f04c2203 MK	473	struct wireless_dev *wdev);
81256969 SG	474	void cfg80211_leave(struct cfg80211_registered_device *rdev,
	475	struct wireless_dev *wdev);
	476
f9f47529 JB	477	void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
	478	struct wireless_dev *wdev);
	479
d4e50c59 MK	480	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	481
f7969969 JB	482	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	483	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	484	#else
	485	/*
	486	* Trick to enable using it as a condition,
	487	* and also not give a warning when it's
	488	* not used that way.
	489	*/
	490	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	491	#endif
	492
704232c2	493	#endif /* __NET_WIRELESS_CORE_H */