[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];

	/* 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;

	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;

	/* 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)
{
#ifdef CONFIG_PM
	int i;

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

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

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

	/* must be last because of priv member */
	struct cfg80211_bss pub;
};

static inline struct cfg80211_internal_bss *bss_from_pub(struct cfg80211_bss *pub)
{
	return container_of(pub, struct cfg80211_internal_bss, pub);
}

static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
{
	atomic_inc(&bss->hold);
}

static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
{
	int r = atomic_dec_return(&bss->hold);
	WARN_ON(r < 0);
}


struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
int get_wiphy_idx(struct wiphy *wiphy);

struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);

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

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

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

#define ASSERT_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 */
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 *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);
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
				u16 frame_type, const u8 *match_data,
				int match_len);
void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
			  struct wireless_dev *wdev,
			  struct cfg80211_mgmt_tx_params *params,
			  u64 *cookie);
void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
			       const struct ieee80211_ht_cap *ht_capa_mask);
void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
				const struct ieee80211_vht_cap *vht_capa_mask);

/* SME events */
int cfg80211_connect(struct cfg80211_registered_device *rdev,
		     struct net_device *dev,
		     struct cfg80211_connect_params *connect,
		     struct cfg80211_cached_keys *connkeys,
		     const u8 *prev_bssid);
void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
			       const u8 *req_ie, size_t req_ie_len,
			       const u8 *resp_ie, size_t resp_ie_len,
			       u16 status, bool wextev,
			       struct cfg80211_bss *bss);
void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
			     size_t ie_len, u16 reason, bool from_ap);
int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
			struct net_device *dev, u16 reason,
			bool wextev);
void __cfg80211_roamed(struct wireless_dev *wdev,
		       struct cfg80211_bss *bss,
		       const u8 *req_ie, size_t req_ie_len,
		       const u8 *resp_ie, size_t resp_ie_len);
int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
			      struct wireless_dev *wdev);

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

/* internal helpers */
bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
				   struct key_params *params, int key_idx,
				   bool pairwise, const u8 *mac_addr);
void __cfg80211_scan_done(struct work_struct *wk);
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev);
void __cfg80211_sched_scan_results(struct work_struct *wk);
int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
			       bool driver_initiated);
void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
			  struct net_device *dev, enum nl80211_iftype ntype,
			  u32 *flags, struct vif_params *params);
void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
void cfg80211_process_wdev_events(struct wireless_dev *wdev);

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

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

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

void cfg80211_dfs_channels_update_work(struct work_struct *work);


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)
{
	if (rfkill_blocked(rdev->rfkill))
		return -ERFKILL;

	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
ad7e718c	70	struct genl_info *cur_cmd_info;
aff89a9b	71
6829c878	72	struct work_struct conn_work;
667503dd	73	struct work_struct event_work;
6829c878	74
04f39047 SW	75	struct delayed_work dfs_update_channels_wk;
04f39047 SW	76
5de17984 AS	77	/* netlink port which started critical protocol (0 means not started) */
	78	u32 crit_proto_nlportid;
	79
be29b99a AK	80	struct cfg80211_coalesce *coalesce;
be29b99a AK	81
704232c2 JB	82	/* must be last because of the way we do wiphy_priv(),
704232c2 JB	83	* and it should at least be aligned to NETDEV_ALIGN */
1c06ef98	84	struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2 JB	85	};
	86
	87	static inline
	88	struct cfg80211_registered_device wiphy_to_dev(struct wiphy wiphy)
	89	{
	90	BUG_ON(!wiphy);
	91	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	92	}
	93
ff1b6e69 JB	94	static inline void
	95	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	96	{
6abb9cb9	97	#ifdef CONFIG_PM
ff1b6e69 JB	98	int i;
ff1b6e69 JB	99
6abb9cb9	100	if (!rdev->wiphy.wowlan_config)
ff1b6e69	101	return;
6abb9cb9 JB	102	for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
	103	kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
	104	kfree(rdev->wiphy.wowlan_config->patterns);
	105	if (rdev->wiphy.wowlan_config->tcp &&
	106	rdev->wiphy.wowlan_config->tcp->sock)
	107	sock_release(rdev->wiphy.wowlan_config->tcp->sock);
	108	kfree(rdev->wiphy.wowlan_config->tcp);
	109	kfree(rdev->wiphy.wowlan_config);
	110	#endif
ff1b6e69	111	}
e60d7443 AB	112
e60d7443 AB	113	extern struct workqueue_struct *cfg80211_wq;
79c97e97	114	extern struct list_head cfg80211_rdev_list;
f5ea9120	115	extern int cfg80211_rdev_list_generation;
704232c2	116
2a519311 JB	117	struct cfg80211_internal_bss {
2a519311 JB	118	struct list_head list;
776b3580	119	struct list_head hidden_list;
2a519311 JB	120	struct rb_node rbn;
2a519311 JB	121	unsigned long ts;
776b3580	122	unsigned long refcount;
19957bb3	123	atomic_t hold;
a08c1c1a	124
2a519311 JB	125	/* must be last because of priv member */
	126	struct cfg80211_bss pub;
	127	};
	128
19957bb3 JB	129	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	130	{
	131	return container_of(pub, struct cfg80211_internal_bss, pub);
	132	}
	133
	134	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	135	{
	136	atomic_inc(&bss->hold);
	137	}
	138
	139	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	140	{
	141	int r = atomic_dec_return(&bss->hold);
	142	WARN_ON(r < 0);
	143	}
	144
	145
79c97e97	146	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	147	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	148
806a9e39 LR	149	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	150
463d0183 JB	151	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
463d0183 JB	152	struct net *net);
55682965	153
667503dd JB	154	static inline void wdev_lock(struct wireless_dev *wdev)
	155	__acquires(wdev)
	156	{
	157	mutex_lock(&wdev->mtx);
	158	__acquire(wdev->mtx);
	159	}
	160
	161	static inline void wdev_unlock(struct wireless_dev *wdev)
	162	__releases(wdev)
	163	{
	164	__release(wdev->mtx);
	165	mutex_unlock(&wdev->mtx);
	166	}
	167
5fe231e8	168	#define ASSERT_RDEV_LOCK(rdev) ASSERT_RTNL()
46a5ebaf	169	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	170
dbbae26a MK	171	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	172	{
c5a7e582	173	ASSERT_RTNL();
dbbae26a MK	174
	175	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	176	rdev->num_running_ifaces > 0;
	177	}
	178
667503dd JB	179	enum cfg80211_event_type {
	180	EVENT_CONNECT_RESULT,
	181	EVENT_ROAMED,
	182	EVENT_DISCONNECTED,
	183	EVENT_IBSS_JOINED,
	184	};
	185
	186	struct cfg80211_event {
	187	struct list_head list;
	188	enum cfg80211_event_type type;
	189
	190	union {
	191	struct {
	192	u8 bssid[ETH_ALEN];
	193	const u8 *req_ie;
	194	const u8 *resp_ie;
	195	size_t req_ie_len;
	196	size_t resp_ie_len;
	197	u16 status;
	198	} cr;
	199	struct {
667503dd JB	200	const u8 *req_ie;
	201	const u8 *resp_ie;
	202	size_t req_ie_len;
	203	size_t resp_ie_len;
adbde344	204	struct cfg80211_bss *bss;
667503dd JB	205	} rm;
	206	struct {
	207	const u8 *ie;
	208	size_t ie_len;
	209	u16 reason;
	210	} dc;
	211	struct {
	212	u8 bssid[ETH_ALEN];
	213	} ij;
	214	};
	215	};
	216
fffd0934 JB	217	struct cfg80211_cached_keys {
	218	struct key_params params[6];
	219	u8 data[6][WLAN_MAX_KEY_LEN];
	220	int def, defmgmt;
	221	};
	222
26ab9a0c MK	223	enum cfg80211_chan_mode {
	224	CHAN_MODE_UNDEFINED,
	225	CHAN_MODE_SHARED,
	226	CHAN_MODE_EXCLUSIVE,
	227	};
	228
37c73b5f BG	229	struct cfg80211_beacon_registration {
	230	struct list_head list;
	231	u32 nlportid;
	232	};
667503dd	233
704232c2	234	/* free object */
c1b1203d	235	void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	236
c1b1203d JP	237	int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
c1b1203d JP	238	char *newname);
55682965	239
8318d78a	240	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	241
2a519311	242	void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
cb3a8eec DW	243	void cfg80211_bss_age(struct cfg80211_registered_device *dev,
cb3a8eec DW	244	unsigned long age_secs);
2a519311	245
04a773ad	246	/* IBSS */
667503dd JB	247	int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
667503dd JB	248	struct net_device *dev,
fffd0934 JB	249	struct cfg80211_ibss_params *params,
fffd0934 JB	250	struct cfg80211_cached_keys *connkeys);
04a773ad JB	251	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
04a773ad JB	252	struct net_device *dev,
fffd0934 JB	253	struct cfg80211_ibss_params *params,
fffd0934 JB	254	struct cfg80211_cached_keys *connkeys);
9d308429	255	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	256	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	257	struct net_device *dev, bool nowext);
04a773ad	258	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	259	struct net_device *dev, bool nowext);
667503dd	260	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid);
fffd0934 JB	261	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	262	struct wireless_dev *wdev);
04a773ad	263
29cbe68c JB	264	/* mesh */
29cbe68c JB	265	extern const struct mesh_config default_mesh_config;
c80d545d	266	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	267	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	268	struct net_device *dev,
cc1d2806	269	struct mesh_setup *setup,
29cbe68c JB	270	const struct mesh_config *conf);
	271	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	272	struct net_device *dev,
cc1d2806	273	struct mesh_setup *setup,
29cbe68c JB	274	const struct mesh_config *conf);
	275	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
	276	struct net_device *dev);
683b6d3b JB	277	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	278	struct wireless_dev *wdev,
	279	struct cfg80211_chan_def *chandef);
29cbe68c	280
60771780 MK	281	/* AP */
	282	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
	283	struct net_device *dev);
	284
19957bb3 JB	285	/* MLME */
19957bb3 JB	286	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
91bf9b26 JB	287	struct net_device *dev,
	288	struct ieee80211_channel *chan,
	289	enum nl80211_auth_type auth_type,
	290	const u8 *bssid,
19957bb3	291	const u8 *ssid, int ssid_len,
fffd0934	292	const u8 *ie, int ie_len,
e39e5b5e JM	293	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	294	const u8 *sae_data, int sae_data_len);
19957bb3	295	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
f62fab73 JB	296	struct net_device *dev,
	297	struct ieee80211_channel *chan,
	298	const u8 *bssid,
3e5d7649	299	const u8 *ssid, int ssid_len,
f62fab73	300	struct cfg80211_assoc_request *req);
19957bb3 JB	301	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
19957bb3 JB	302	struct net_device dev, const u8 bssid,
d5cdfacb JM	303	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	304	bool local_state_change);
19957bb3 JB	305	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	306	struct net_device dev, const u8 bssid,
d5cdfacb JM	307	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	308	bool local_state_change);
19957bb3 JB	309	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	310	struct net_device *dev);
2e161f78 JB	311	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	312	u16 frame_type, const u8 *match_data,
	313	int match_len);
	314	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	315	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	316	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994	317	struct wireless_dev *wdev,
b176e629 AO	318	struct cfg80211_mgmt_tx_params *params,
b176e629 AO	319	u64 *cookie);
7e7c8926 BG	320	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	321	const struct ieee80211_ht_cap *ht_capa_mask);
ee2aca34 JB	322	void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
ee2aca34 JB	323	const struct ieee80211_vht_cap *vht_capa_mask);
19957bb3	324
ceca7b71	325	/* SME events */
b23aa676 SO	326	int cfg80211_connect(struct cfg80211_registered_device *rdev,
b23aa676 SO	327	struct net_device *dev,
fffd0934	328	struct cfg80211_connect_params *connect,
83739b03 JB	329	struct cfg80211_cached_keys *connkeys,
83739b03 JB	330	const u8 *prev_bssid);
ceca7b71 JB	331	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	332	const u8 *req_ie, size_t req_ie_len,
	333	const u8 *resp_ie, size_t resp_ie_len,
	334	u16 status, bool wextev,
	335	struct cfg80211_bss *bss);
	336	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
	337	size_t ie_len, u16 reason, bool from_ap);
b23aa676	338	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	339	struct net_device *dev, u16 reason,
f2129354 JB	340	bool wextev);
ed9d0102	341	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	342	struct cfg80211_bss *bss,
667503dd JB	343	const u8 *req_ie, size_t req_ie_len,
667503dd JB	344	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	345	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	346	struct wireless_dev *wdev);
b23aa676	347
ceca7b71	348	/* SME implementation */
6829c878	349	void cfg80211_conn_work(struct work_struct *work);
ceca7b71 JB	350	void cfg80211_sme_scan_done(struct net_device *dev);
	351	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
	352	void cfg80211_sme_rx_auth(struct wireless_dev wdev, const u8 buf, size_t len);
	353	void cfg80211_sme_disassoc(struct wireless_dev *wdev);
	354	void cfg80211_sme_deauth(struct wireless_dev *wdev);
	355	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
	356	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
6829c878	357
08645126	358	/* internal helpers */
38ba3c57	359	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	360	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	361	struct key_params *params, int key_idx,
e31b8213	362	bool pairwise, const u8 *mac_addr);
667503dd	363	void __cfg80211_scan_done(struct work_struct *wk);
4a58e7c3	364	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev);
807f8a8c LC	365	void __cfg80211_sched_scan_results(struct work_struct *wk);
	366	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	367	bool driver_initiated);
fffd0934	368	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	369	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	370	struct net_device *dev, enum nl80211_iftype ntype,
	371	u32 flags, struct vif_params params);
	372	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	373	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	374
d4e50c59 MK	375	int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
	376	struct wireless_dev *wdev,
	377	enum nl80211_iftype iftype,
	378	struct ieee80211_channel *chan,
11c4a075 SW	379	enum cfg80211_chan_mode chanmode,
11c4a075 SW	380	u8 radar_detect);
d4e50c59	381
fe7c3a1f JD	382	/**
	383	* cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
	384	* @wiphy: the wiphy to validate against
	385	* @chandef: the channel definition to check
	386	*
	387	* Checks if chandef is usable and we can/need start CAC on such channel.
	388	*
	389	* Return: Return true if all channels available and at least
	390	* one channel require CAC (NL80211_DFS_USABLE)
	391	*/
	392	bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
	393	const struct cfg80211_chan_def *chandef);
	394
04f39047 SW	395	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	396	const struct cfg80211_chan_def *chandef,
	397	enum nl80211_dfs_state dfs_state);
	398
	399	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	400
	401
d4e50c59 MK	402	static inline int
	403	cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,
	404	struct wireless_dev *wdev,
	405	enum nl80211_iftype iftype)
	406	{
	407	return cfg80211_can_use_iftype_chan(rdev, wdev, iftype, NULL,
11c4a075	408	CHAN_MODE_UNDEFINED, 0);
d4e50c59	409	}
7527a782 JB	410
	411	static inline int
	412	cfg80211_can_add_interface(struct cfg80211_registered_device *rdev,
	413	enum nl80211_iftype iftype)
	414	{
f38dd58c EG	415	if (rfkill_blocked(rdev->rfkill))
	416	return -ERFKILL;
	417
7527a782 JB	418	return cfg80211_can_change_interface(rdev, NULL, iftype);
	419	}
	420
d4e50c59 MK	421	static inline int
	422	cfg80211_can_use_chan(struct cfg80211_registered_device *rdev,
	423	struct wireless_dev *wdev,
	424	struct ieee80211_channel *chan,
	425	enum cfg80211_chan_mode chanmode)
	426	{
	427	return cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
11c4a075	428	chan, chanmode, 0);
d4e50c59 MK	429	}
d4e50c59 MK	430
04f39047 SW	431	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	432	{
	433	unsigned long end = jiffies;
	434
	435	if (end >= start)
	436	return jiffies_to_msecs(end - start);
	437
	438	return jiffies_to_msecs(end + (MAX_JIFFY_OFFSET - start) + 1);
	439	}
	440
26ab9a0c	441	void
8e95ea49	442	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c MK	443	struct ieee80211_channel **chan,
	444	enum cfg80211_chan_mode *chanmode);
	445
e8c9bd5b	446	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	447	struct cfg80211_chan_def *chandef);
59bbb6f7	448
34850ab2 JB	449	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	450	const u8 *rates, unsigned int n_rates,
	451	u32 *mask);
	452
56d1893d JB	453	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
	454	u32 beacon_int);
	455
dbbae26a MK	456	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	457	enum nl80211_iftype iftype, int num);
	458
81256969 SG	459	void cfg80211_leave(struct cfg80211_registered_device *rdev,
	460	struct wireless_dev *wdev);
	461
f9f47529 JB	462	void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
	463	struct wireless_dev *wdev);
	464
d4e50c59 MK	465	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	466
f7969969 JB	467	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	468	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	469	#else
	470	/*
	471	* Trick to enable using it as a condition,
	472	* and also not give a warning when it's
	473	* not used that way.
	474	*/
	475	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	476	#endif
	477
704232c2	478	#endif /* __NET_WIRELESS_CORE_H */