[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;

	/* protected by RTNL */
	int devlist_generation, wdev_id;
	int opencount;
	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;

	/* time at the start of the reception of the first octet of the
	 * timestamp field of the last beacon/probe received for this BSS.
	 * The time is the TSF of the BSS specified by %parent_bssid.
	 */
	u64 parent_tsf;

	/* the BSS according to which %parent_tsf is set. This is set to
	 * the BSS that the interface that requested the scan was connected to
	 * when the beacon/probe was received.
	 */
	u8 parent_bssid[ETH_ALEN] __aligned(2);

	/* 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;
			int status; /* -1 = failed; 0..65535 = status code */
		} 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[CFG80211_MAX_WEP_KEYS];
	u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];
	int def;
};

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,
			       int 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,
				 enum nl80211_iftype iftype, 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);

void cfg80211_stop_nan(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
53873f13	53	/* protected by RTNL */
89a54e48	54	int devlist_generation, wdev_id;
8b9b2f06	55	int opencount;
ad002395	56	wait_queue_head_t dev_wait;
704232c2	57
37c73b5f BG	58	struct list_head beacon_registrations;
37c73b5f BG	59	spinlock_t beacon_registrations_lock;
5e760230	60
33d8783c JB	61	struct list_head mlme_unreg;
	62	spinlock_t mlme_unreg_lock;
	63	struct work_struct mlme_unreg_wk;
	64
c5a7e582	65	/* protected by RTNL only */
dbbae26a MK	66	int num_running_ifaces;
	67	int num_running_monitor_ifaces;
	68
2a519311 JB	69	/* BSSes/scanning */
	70	spinlock_t bss_lock;
	71	struct list_head bss_list;
	72	struct rb_root bss_tree;
	73	u32 bss_generation;
	74	struct cfg80211_scan_request scan_req; / protected by RTNL */
f9d15d16	75	struct sk_buff *scan_msg;
31a60ed1	76	struct cfg80211_sched_scan_request __rcu *sched_scan_req;
cb3a8eec	77	unsigned long suspend_at;
667503dd	78	struct work_struct scan_done_wk;
807f8a8c	79	struct work_struct sched_scan_results_wk;
2a519311	80
ad7e718c	81	struct genl_info *cur_cmd_info;
aff89a9b	82
6829c878	83	struct work_struct conn_work;
667503dd	84	struct work_struct event_work;
6829c878	85
04f39047 SW	86	struct delayed_work dfs_update_channels_wk;
04f39047 SW	87
5de17984 AS	88	/* netlink port which started critical protocol (0 means not started) */
	89	u32 crit_proto_nlportid;
	90
be29b99a AK	91	struct cfg80211_coalesce *coalesce;
be29b99a AK	92
78f22b6a JB	93	spinlock_t destroy_list_lock;
	94	struct list_head destroy_list;
	95	struct work_struct destroy_work;
	96
93a1e86c JR	97	struct work_struct sched_scan_stop_wk;
93a1e86c JR	98
704232c2 JB	99	/* must be last because of the way we do wiphy_priv(),
704232c2 JB	100	* and it should at least be aligned to NETDEV_ALIGN */
1c06ef98	101	struct wiphy wiphy __aligned(NETDEV_ALIGN);
704232c2 JB	102	};
	103
	104	static inline
f26cbf40	105	struct cfg80211_registered_device wiphy_to_rdev(struct wiphy wiphy)
704232c2 JB	106	{
	107	BUG_ON(!wiphy);
	108	return container_of(wiphy, struct cfg80211_registered_device, wiphy);
	109	}
	110
ff1b6e69 JB	111	static inline void
	112	cfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev)
	113	{
6abb9cb9	114	#ifdef CONFIG_PM
ff1b6e69 JB	115	int i;
ff1b6e69 JB	116
6abb9cb9	117	if (!rdev->wiphy.wowlan_config)
ff1b6e69	118	return;
6abb9cb9 JB	119	for (i = 0; i < rdev->wiphy.wowlan_config->n_patterns; i++)
	120	kfree(rdev->wiphy.wowlan_config->patterns[i].mask);
	121	kfree(rdev->wiphy.wowlan_config->patterns);
	122	if (rdev->wiphy.wowlan_config->tcp &&
	123	rdev->wiphy.wowlan_config->tcp->sock)
	124	sock_release(rdev->wiphy.wowlan_config->tcp->sock);
	125	kfree(rdev->wiphy.wowlan_config->tcp);
8cd4d456	126	kfree(rdev->wiphy.wowlan_config->nd_config);
6abb9cb9 JB	127	kfree(rdev->wiphy.wowlan_config);
6abb9cb9 JB	128	#endif
ff1b6e69	129	}
e60d7443 AB	130
e60d7443 AB	131	extern struct workqueue_struct *cfg80211_wq;
79c97e97	132	extern struct list_head cfg80211_rdev_list;
f5ea9120	133	extern int cfg80211_rdev_list_generation;
704232c2	134
2a519311 JB	135	struct cfg80211_internal_bss {
2a519311 JB	136	struct list_head list;
776b3580	137	struct list_head hidden_list;
2a519311	138	struct rb_node rbn;
6e19bc4b	139	u64 ts_boottime;
2a519311	140	unsigned long ts;
776b3580	141	unsigned long refcount;
19957bb3	142	atomic_t hold;
a08c1c1a	143
1d76250b AS	144	/* time at the start of the reception of the first octet of the
	145	* timestamp field of the last beacon/probe received for this BSS.
	146	* The time is the TSF of the BSS specified by %parent_bssid.
	147	*/
	148	u64 parent_tsf;
	149
	150	/* the BSS according to which %parent_tsf is set. This is set to
	151	* the BSS that the interface that requested the scan was connected to
	152	* when the beacon/probe was received.
	153	*/
	154	u8 parent_bssid[ETH_ALEN] __aligned(2);
	155
2a519311 JB	156	/* must be last because of priv member */
	157	struct cfg80211_bss pub;
	158	};
	159
19957bb3 JB	160	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	161	{
	162	return container_of(pub, struct cfg80211_internal_bss, pub);
	163	}
	164
	165	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	166	{
	167	atomic_inc(&bss->hold);
	168	}
	169
	170	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	171	{
	172	int r = atomic_dec_return(&bss->hold);
	173	WARN_ON(r < 0);
	174	}
	175
	176
79c97e97	177	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	178	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	179
806a9e39 LR	180	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	181
463d0183 JB	182	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
463d0183 JB	183	struct net *net);
55682965	184
667503dd JB	185	static inline void wdev_lock(struct wireless_dev *wdev)
	186	__acquires(wdev)
	187	{
	188	mutex_lock(&wdev->mtx);
	189	__acquire(wdev->mtx);
	190	}
	191
	192	static inline void wdev_unlock(struct wireless_dev *wdev)
	193	__releases(wdev)
	194	{
	195	__release(wdev->mtx);
	196	mutex_unlock(&wdev->mtx);
	197	}
	198
46a5ebaf	199	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	200
dbbae26a MK	201	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	202	{
c5a7e582	203	ASSERT_RTNL();
dbbae26a MK	204
	205	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	206	rdev->num_running_ifaces > 0;
	207	}
	208
667503dd JB	209	enum cfg80211_event_type {
	210	EVENT_CONNECT_RESULT,
	211	EVENT_ROAMED,
	212	EVENT_DISCONNECTED,
	213	EVENT_IBSS_JOINED,
f04c2203	214	EVENT_STOPPED,
667503dd JB	215	};
	216
	217	struct cfg80211_event {
	218	struct list_head list;
	219	enum cfg80211_event_type type;
	220
	221	union {
	222	struct {
	223	u8 bssid[ETH_ALEN];
	224	const u8 *req_ie;
	225	const u8 *resp_ie;
	226	size_t req_ie_len;
	227	size_t resp_ie_len;
e7054989	228	struct cfg80211_bss *bss;
bf1ecd21	229	int status; /* -1 = failed; 0..65535 = status code */
667503dd JB	230	} cr;
667503dd JB	231	struct {
667503dd JB	232	const u8 *req_ie;
	233	const u8 *resp_ie;
	234	size_t req_ie_len;
	235	size_t resp_ie_len;
adbde344	236	struct cfg80211_bss *bss;
667503dd JB	237	} rm;
	238	struct {
	239	const u8 *ie;
	240	size_t ie_len;
	241	u16 reason;
80279fb7	242	bool locally_generated;
667503dd JB	243	} dc;
	244	struct {
	245	u8 bssid[ETH_ALEN];
fe94f3a4	246	struct ieee80211_channel *channel;
667503dd JB	247	} ij;
	248	};
	249	};
	250
fffd0934	251	struct cfg80211_cached_keys {
b8676221 DS	252	struct key_params params[CFG80211_MAX_WEP_KEYS];
b8676221 DS	253	u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];
89b706fb	254	int def;
fffd0934 JB	255	};
fffd0934 JB	256
26ab9a0c MK	257	enum cfg80211_chan_mode {
	258	CHAN_MODE_UNDEFINED,
	259	CHAN_MODE_SHARED,
	260	CHAN_MODE_EXCLUSIVE,
	261	};
	262
37c73b5f BG	263	struct cfg80211_beacon_registration {
	264	struct list_head list;
	265	u32 nlportid;
	266	};
667503dd	267
78f22b6a JB	268	struct cfg80211_iface_destroy {
	269	struct list_head list;
	270	u32 nlportid;
	271	};
	272
	273	void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
	274
704232c2	275	/* free object */
c1b1203d	276	void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	277
c1b1203d JP	278	int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
c1b1203d JP	279	char *newname);
55682965	280
8318d78a	281	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	282
1b8ec87a ZG	283	void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
1b8ec87a ZG	284	void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
cb3a8eec	285	unsigned long age_secs);
2a519311	286
04a773ad JB	287	/* IBSS */
	288	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
	289	struct net_device *dev,
fffd0934 JB	290	struct cfg80211_ibss_params *params,
fffd0934 JB	291	struct cfg80211_cached_keys *connkeys);
9d308429	292	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	293	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	294	struct net_device *dev, bool nowext);
04a773ad	295	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	296	struct net_device *dev, bool nowext);
fe94f3a4 AQ	297	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid,
fe94f3a4 AQ	298	struct ieee80211_channel *channel);
fffd0934 JB	299	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	300	struct wireless_dev *wdev);
04a773ad	301
29cbe68c JB	302	/* mesh */
29cbe68c JB	303	extern const struct mesh_config default_mesh_config;
c80d545d	304	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	305	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	306	struct net_device *dev,
cc1d2806	307	struct mesh_setup *setup,
29cbe68c JB	308	const struct mesh_config *conf);
	309	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	310	struct net_device *dev,
cc1d2806	311	struct mesh_setup *setup,
29cbe68c	312	const struct mesh_config *conf);
f04c2203 MK	313	int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
f04c2203 MK	314	struct net_device *dev);
29cbe68c JB	315	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	316	struct net_device *dev);
683b6d3b JB	317	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	318	struct wireless_dev *wdev,
	319	struct cfg80211_chan_def *chandef);
29cbe68c	320
6e0bd6c3 RL	321	/* OCB */
	322	int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	323	struct net_device *dev,
	324	struct ocb_setup *setup);
	325	int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	326	struct net_device *dev,
	327	struct ocb_setup *setup);
	328	int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	329	struct net_device *dev);
	330	int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	331	struct net_device *dev);
	332
60771780	333	/* AP */
f04c2203 MK	334	int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
f04c2203 MK	335	struct net_device *dev, bool notify);
60771780	336	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
7c8d5e03	337	struct net_device *dev, bool notify);
60771780	338
19957bb3 JB	339	/* MLME */
19957bb3 JB	340	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
91bf9b26 JB	341	struct net_device *dev,
	342	struct ieee80211_channel *chan,
	343	enum nl80211_auth_type auth_type,
	344	const u8 *bssid,
19957bb3	345	const u8 *ssid, int ssid_len,
fffd0934	346	const u8 *ie, int ie_len,
e39e5b5e JM	347	const u8 *key, int key_len, int key_idx,
e39e5b5e JM	348	const u8 *sae_data, int sae_data_len);
19957bb3	349	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
f62fab73 JB	350	struct net_device *dev,
	351	struct ieee80211_channel *chan,
	352	const u8 *bssid,
3e5d7649	353	const u8 *ssid, int ssid_len,
f62fab73	354	struct cfg80211_assoc_request *req);
19957bb3 JB	355	int cfg80211_mlme_deauth(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	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	360	struct net_device dev, const u8 bssid,
d5cdfacb JM	361	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	362	bool local_state_change);
19957bb3 JB	363	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	364	struct net_device *dev);
2e161f78 JB	365	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	366	u16 frame_type, const u8 *match_data,
	367	int match_len);
33d8783c	368	void cfg80211_mlme_unreg_wk(struct work_struct *wk);
2e161f78 JB	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,
b176e629 AO	373	struct cfg80211_mgmt_tx_params *params,
b176e629 AO	374	u64 *cookie);
7e7c8926 BG	375	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	376	const struct ieee80211_ht_cap *ht_capa_mask);
ee2aca34 JB	377	void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
ee2aca34 JB	378	const struct ieee80211_vht_cap *vht_capa_mask);
19957bb3	379
ceca7b71	380	/* SME events */
b23aa676 SO	381	int cfg80211_connect(struct cfg80211_registered_device *rdev,
b23aa676 SO	382	struct net_device *dev,
fffd0934	383	struct cfg80211_connect_params *connect,
83739b03 JB	384	struct cfg80211_cached_keys *connkeys,
83739b03 JB	385	const u8 *prev_bssid);
ceca7b71 JB	386	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	387	const u8 *req_ie, size_t req_ie_len,
	388	const u8 *resp_ie, size_t resp_ie_len,
bf1ecd21	389	int status, bool wextev,
ceca7b71 JB	390	struct cfg80211_bss *bss);
	391	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
	392	size_t ie_len, u16 reason, bool from_ap);
b23aa676	393	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	394	struct net_device *dev, u16 reason,
f2129354 JB	395	bool wextev);
ed9d0102	396	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	397	struct cfg80211_bss *bss,
667503dd JB	398	const u8 *req_ie, size_t req_ie_len,
667503dd JB	399	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	400	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	401	struct wireless_dev *wdev);
b23aa676	402
ceca7b71	403	/* SME implementation */
6829c878	404	void cfg80211_conn_work(struct work_struct *work);
ceca7b71 JB	405	void cfg80211_sme_scan_done(struct net_device *dev);
	406	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
	407	void cfg80211_sme_rx_auth(struct wireless_dev wdev, const u8 buf, size_t len);
	408	void cfg80211_sme_disassoc(struct wireless_dev *wdev);
	409	void cfg80211_sme_deauth(struct wireless_dev *wdev);
	410	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
	411	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
6829c878	412
08645126	413	/* internal helpers */
38ba3c57	414	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	415	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	416	struct key_params *params, int key_idx,
e31b8213	417	bool pairwise, const u8 *mac_addr);
667503dd	418	void __cfg80211_scan_done(struct work_struct *wk);
f9d15d16 JB	419	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
f9d15d16 JB	420	bool send_message);
807f8a8c LC	421	void __cfg80211_sched_scan_results(struct work_struct *wk);
	422	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	423	bool driver_initiated);
fffd0934	424	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	425	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	426	struct net_device *dev, enum nl80211_iftype ntype,
	427	u32 flags, struct vif_params params);
	428	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	429	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	430
fe7c3a1f JD	431	/**
	432	* cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
	433	* @wiphy: the wiphy to validate against
	434	* @chandef: the channel definition to check
	435	*
	436	* Checks if chandef is usable and we can/need start CAC on such channel.
	437	*
	438	* Return: Return true if all channels available and at least
	439	* one channel require CAC (NL80211_DFS_USABLE)
	440	*/
	441	bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
	442	const struct cfg80211_chan_def *chandef);
	443
04f39047 SW	444	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	445	const struct cfg80211_chan_def *chandef,
	446	enum nl80211_dfs_state dfs_state);
	447
	448	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	449
31559f35 JD	450	unsigned int
	451	cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
	452	const struct cfg80211_chan_def *chandef);
04f39047	453
04f39047 SW	454	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	455	{
	456	unsigned long end = jiffies;
	457
	458	if (end >= start)
	459	return jiffies_to_msecs(end - start);
	460
0ce12026	461	return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
04f39047 SW	462	}
04f39047 SW	463
26ab9a0c	464	void
8e95ea49	465	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c	466	struct ieee80211_channel **chan,
9e0e2961 MK	467	enum cfg80211_chan_mode *chanmode,
9e0e2961 MK	468	u8 *radar_detect);
26ab9a0c	469
e8c9bd5b	470	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	471	struct cfg80211_chan_def *chandef);
59bbb6f7	472
34850ab2 JB	473	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	474	const u8 *rates, unsigned int n_rates,
	475	u32 *mask);
	476
56d1893d	477	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
0c317a02	478	enum nl80211_iftype iftype, u32 beacon_int);
56d1893d	479
dbbae26a MK	480	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	481	enum nl80211_iftype iftype, int num);
	482
f04c2203 MK	483	void __cfg80211_leave(struct cfg80211_registered_device *rdev,
f04c2203 MK	484	struct wireless_dev *wdev);
81256969 SG	485	void cfg80211_leave(struct cfg80211_registered_device *rdev,
	486	struct wireless_dev *wdev);
	487
f9f47529 JB	488	void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
	489	struct wireless_dev *wdev);
	490
cb3b7d87 AB	491	void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
	492	struct wireless_dev *wdev);
	493
d4e50c59 MK	494	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	495
f7969969 JB	496	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	497	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	498	#else
	499	/*
	500	* Trick to enable using it as a condition,
	501	* and also not give a warning when it's
	502	* not used that way.
	503	*/
	504	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	505	#endif
	506
704232c2	507	#endif /* __NET_WIRELESS_CORE_H */