[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;
	u32 bss_entries;
	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 *auth_data, int auth_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);
void cfg80211_sme_abandon_assoc(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);

bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
				u32 center_freq_khz, u32 bw_khz);

/**
 * 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;
9853a55e	74	u32 bss_entries;
2a519311	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
1d76250b AS	145	/* time at the start of the reception of the first octet of the
	146	* timestamp field of the last beacon/probe received for this BSS.
	147	* The time is the TSF of the BSS specified by %parent_bssid.
	148	*/
	149	u64 parent_tsf;
	150
	151	/* the BSS according to which %parent_tsf is set. This is set to
	152	* the BSS that the interface that requested the scan was connected to
	153	* when the beacon/probe was received.
	154	*/
	155	u8 parent_bssid[ETH_ALEN] __aligned(2);
	156
2a519311 JB	157	/* must be last because of priv member */
	158	struct cfg80211_bss pub;
	159	};
	160
19957bb3 JB	161	static inline struct cfg80211_internal_bss bss_from_pub(struct cfg80211_bss pub)
	162	{
	163	return container_of(pub, struct cfg80211_internal_bss, pub);
	164	}
	165
	166	static inline void cfg80211_hold_bss(struct cfg80211_internal_bss *bss)
	167	{
	168	atomic_inc(&bss->hold);
	169	}
	170
	171	static inline void cfg80211_unhold_bss(struct cfg80211_internal_bss *bss)
	172	{
	173	int r = atomic_dec_return(&bss->hold);
	174	WARN_ON(r < 0);
	175	}
	176
	177
79c97e97	178	struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx);
806a9e39 LR	179	int get_wiphy_idx(struct wiphy *wiphy);
806a9e39 LR	180
806a9e39 LR	181	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
806a9e39 LR	182
463d0183 JB	183	int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
463d0183 JB	184	struct net *net);
55682965	185
667503dd JB	186	static inline void wdev_lock(struct wireless_dev *wdev)
	187	__acquires(wdev)
	188	{
	189	mutex_lock(&wdev->mtx);
	190	__acquire(wdev->mtx);
	191	}
	192
	193	static inline void wdev_unlock(struct wireless_dev *wdev)
	194	__releases(wdev)
	195	{
	196	__release(wdev->mtx);
	197	mutex_unlock(&wdev->mtx);
	198	}
	199
46a5ebaf	200	#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
667503dd	201
dbbae26a MK	202	static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
dbbae26a MK	203	{
c5a7e582	204	ASSERT_RTNL();
dbbae26a MK	205
	206	return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
	207	rdev->num_running_ifaces > 0;
	208	}
	209
667503dd JB	210	enum cfg80211_event_type {
	211	EVENT_CONNECT_RESULT,
	212	EVENT_ROAMED,
	213	EVENT_DISCONNECTED,
	214	EVENT_IBSS_JOINED,
f04c2203	215	EVENT_STOPPED,
667503dd JB	216	};
	217
	218	struct cfg80211_event {
	219	struct list_head list;
	220	enum cfg80211_event_type type;
	221
	222	union {
	223	struct {
	224	u8 bssid[ETH_ALEN];
	225	const u8 *req_ie;
	226	const u8 *resp_ie;
	227	size_t req_ie_len;
	228	size_t resp_ie_len;
e7054989	229	struct cfg80211_bss *bss;
bf1ecd21	230	int status; /* -1 = failed; 0..65535 = status code */
667503dd JB	231	} cr;
667503dd JB	232	struct {
667503dd JB	233	const u8 *req_ie;
	234	const u8 *resp_ie;
	235	size_t req_ie_len;
	236	size_t resp_ie_len;
adbde344	237	struct cfg80211_bss *bss;
667503dd JB	238	} rm;
	239	struct {
	240	const u8 *ie;
	241	size_t ie_len;
	242	u16 reason;
80279fb7	243	bool locally_generated;
667503dd JB	244	} dc;
	245	struct {
	246	u8 bssid[ETH_ALEN];
fe94f3a4	247	struct ieee80211_channel *channel;
667503dd JB	248	} ij;
	249	};
	250	};
	251
fffd0934	252	struct cfg80211_cached_keys {
b8676221 DS	253	struct key_params params[CFG80211_MAX_WEP_KEYS];
b8676221 DS	254	u8 data[CFG80211_MAX_WEP_KEYS][WLAN_KEY_LEN_WEP104];
89b706fb	255	int def;
fffd0934 JB	256	};
fffd0934 JB	257
26ab9a0c MK	258	enum cfg80211_chan_mode {
	259	CHAN_MODE_UNDEFINED,
	260	CHAN_MODE_SHARED,
	261	CHAN_MODE_EXCLUSIVE,
	262	};
	263
37c73b5f BG	264	struct cfg80211_beacon_registration {
	265	struct list_head list;
	266	u32 nlportid;
	267	};
667503dd	268
78f22b6a JB	269	struct cfg80211_iface_destroy {
	270	struct list_head list;
	271	u32 nlportid;
	272	};
	273
	274	void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev);
	275
704232c2	276	/* free object */
c1b1203d	277	void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
704232c2	278
c1b1203d JP	279	int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
c1b1203d JP	280	char *newname);
55682965	281
8318d78a	282	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
8318d78a	283
1b8ec87a ZG	284	void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
1b8ec87a ZG	285	void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
cb3a8eec	286	unsigned long age_secs);
2a519311	287
04a773ad JB	288	/* IBSS */
	289	int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
	290	struct net_device *dev,
fffd0934 JB	291	struct cfg80211_ibss_params *params,
fffd0934 JB	292	struct cfg80211_cached_keys *connkeys);
9d308429	293	void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
98d3a7ca JB	294	int __cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
98d3a7ca JB	295	struct net_device *dev, bool nowext);
04a773ad	296	int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
9d308429	297	struct net_device *dev, bool nowext);
fe94f3a4 AQ	298	void __cfg80211_ibss_joined(struct net_device dev, const u8 bssid,
fe94f3a4 AQ	299	struct ieee80211_channel *channel);
fffd0934 JB	300	int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
fffd0934 JB	301	struct wireless_dev *wdev);
04a773ad	302
29cbe68c JB	303	/* mesh */
29cbe68c JB	304	extern const struct mesh_config default_mesh_config;
c80d545d	305	extern const struct mesh_setup default_mesh_setup;
29cbe68c JB	306	int __cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	307	struct net_device *dev,
cc1d2806	308	struct mesh_setup *setup,
29cbe68c JB	309	const struct mesh_config *conf);
	310	int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,
	311	struct net_device *dev,
cc1d2806	312	struct mesh_setup *setup,
29cbe68c	313	const struct mesh_config *conf);
f04c2203 MK	314	int __cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
f04c2203 MK	315	struct net_device *dev);
29cbe68c JB	316	int cfg80211_leave_mesh(struct cfg80211_registered_device *rdev,
29cbe68c JB	317	struct net_device *dev);
683b6d3b JB	318	int cfg80211_set_mesh_channel(struct cfg80211_registered_device *rdev,
	319	struct wireless_dev *wdev,
	320	struct cfg80211_chan_def *chandef);
29cbe68c	321
6e0bd6c3 RL	322	/* OCB */
	323	int __cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	324	struct net_device *dev,
	325	struct ocb_setup *setup);
	326	int cfg80211_join_ocb(struct cfg80211_registered_device *rdev,
	327	struct net_device *dev,
	328	struct ocb_setup *setup);
	329	int __cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	330	struct net_device *dev);
	331	int cfg80211_leave_ocb(struct cfg80211_registered_device *rdev,
	332	struct net_device *dev);
	333
60771780	334	/* AP */
f04c2203 MK	335	int __cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
f04c2203 MK	336	struct net_device *dev, bool notify);
60771780	337	int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
7c8d5e03	338	struct net_device *dev, bool notify);
60771780	339
19957bb3 JB	340	/* MLME */
19957bb3 JB	341	int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
91bf9b26 JB	342	struct net_device *dev,
	343	struct ieee80211_channel *chan,
	344	enum nl80211_auth_type auth_type,
	345	const u8 *bssid,
19957bb3	346	const u8 *ssid, int ssid_len,
fffd0934	347	const u8 *ie, int ie_len,
e39e5b5e	348	const u8 *key, int key_len, int key_idx,
11b6b5a4	349	const u8 *auth_data, int auth_data_len);
19957bb3	350	int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
f62fab73 JB	351	struct net_device *dev,
	352	struct ieee80211_channel *chan,
	353	const u8 *bssid,
3e5d7649	354	const u8 *ssid, int ssid_len,
f62fab73	355	struct cfg80211_assoc_request *req);
19957bb3 JB	356	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
19957bb3 JB	357	struct net_device dev, const u8 bssid,
d5cdfacb JM	358	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	359	bool local_state_change);
19957bb3 JB	360	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
19957bb3 JB	361	struct net_device dev, const u8 bssid,
d5cdfacb JM	362	const u8 *ie, int ie_len, u16 reason,
d5cdfacb JM	363	bool local_state_change);
19957bb3 JB	364	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
19957bb3 JB	365	struct net_device *dev);
2e161f78 JB	366	int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_pid,
	367	u16 frame_type, const u8 *match_data,
	368	int match_len);
33d8783c	369	void cfg80211_mlme_unreg_wk(struct work_struct *wk);
2e161f78 JB	370	void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlpid);
	371	void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev);
	372	int cfg80211_mlme_mgmt_tx(struct cfg80211_registered_device *rdev,
71bbc994	373	struct wireless_dev *wdev,
b176e629 AO	374	struct cfg80211_mgmt_tx_params *params,
b176e629 AO	375	u64 *cookie);
7e7c8926 BG	376	void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,
7e7c8926 BG	377	const struct ieee80211_ht_cap *ht_capa_mask);
ee2aca34 JB	378	void cfg80211_oper_and_vht_capa(struct ieee80211_vht_cap *vht_capa,
ee2aca34 JB	379	const struct ieee80211_vht_cap *vht_capa_mask);
19957bb3	380
ceca7b71	381	/* SME events */
b23aa676 SO	382	int cfg80211_connect(struct cfg80211_registered_device *rdev,
b23aa676 SO	383	struct net_device *dev,
fffd0934	384	struct cfg80211_connect_params *connect,
83739b03 JB	385	struct cfg80211_cached_keys *connkeys,
83739b03 JB	386	const u8 *prev_bssid);
ceca7b71 JB	387	void __cfg80211_connect_result(struct net_device dev, const u8 bssid,
	388	const u8 *req_ie, size_t req_ie_len,
	389	const u8 *resp_ie, size_t resp_ie_len,
bf1ecd21	390	int status, bool wextev,
ceca7b71 JB	391	struct cfg80211_bss *bss);
	392	void __cfg80211_disconnected(struct net_device dev, const u8 ie,
	393	size_t ie_len, u16 reason, bool from_ap);
b23aa676	394	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
f2129354 JB	395	struct net_device *dev, u16 reason,
f2129354 JB	396	bool wextev);
ed9d0102	397	void __cfg80211_roamed(struct wireless_dev *wdev,
adbde344	398	struct cfg80211_bss *bss,
667503dd JB	399	const u8 *req_ie, size_t req_ie_len,
667503dd JB	400	const u8 *resp_ie, size_t resp_ie_len);
fffd0934 JB	401	int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
fffd0934 JB	402	struct wireless_dev *wdev);
b23aa676	403
ceca7b71	404	/* SME implementation */
6829c878	405	void cfg80211_conn_work(struct work_struct *work);
ceca7b71 JB	406	void cfg80211_sme_scan_done(struct net_device *dev);
	407	bool cfg80211_sme_rx_assoc_resp(struct wireless_dev *wdev, u16 status);
	408	void cfg80211_sme_rx_auth(struct wireless_dev wdev, const u8 buf, size_t len);
	409	void cfg80211_sme_disassoc(struct wireless_dev *wdev);
	410	void cfg80211_sme_deauth(struct wireless_dev *wdev);
	411	void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
	412	void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
e6f462df	413	void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
6829c878	414
08645126	415	/* internal helpers */
38ba3c57	416	bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);
fffd0934 JB	417	int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
fffd0934 JB	418	struct key_params *params, int key_idx,
e31b8213	419	bool pairwise, const u8 *mac_addr);
667503dd	420	void __cfg80211_scan_done(struct work_struct *wk);
f9d15d16 JB	421	void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
f9d15d16 JB	422	bool send_message);
807f8a8c LC	423	void __cfg80211_sched_scan_results(struct work_struct *wk);
	424	int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
	425	bool driver_initiated);
fffd0934	426	void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
3d54d255 JB	427	int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
	428	struct net_device *dev, enum nl80211_iftype ntype,
	429	u32 flags, struct vif_params params);
	430	void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev);
1f6fc43e	431	void cfg80211_process_wdev_events(struct wireless_dev *wdev);
08645126	432
4787cfa0 RM	433	bool cfg80211_does_bw_fit_range(const struct ieee80211_freq_range *freq_range,
	434	u32 center_freq_khz, u32 bw_khz);
	435
fe7c3a1f JD	436	/**
	437	* cfg80211_chandef_dfs_usable - checks if chandef is DFS usable
	438	* @wiphy: the wiphy to validate against
	439	* @chandef: the channel definition to check
	440	*
	441	* Checks if chandef is usable and we can/need start CAC on such channel.
	442	*
	443	* Return: Return true if all channels available and at least
	444	* one channel require CAC (NL80211_DFS_USABLE)
	445	*/
	446	bool cfg80211_chandef_dfs_usable(struct wiphy *wiphy,
	447	const struct cfg80211_chan_def *chandef);
	448
04f39047 SW	449	void cfg80211_set_dfs_state(struct wiphy *wiphy,
	450	const struct cfg80211_chan_def *chandef,
	451	enum nl80211_dfs_state dfs_state);
	452
	453	void cfg80211_dfs_channels_update_work(struct work_struct *work);
	454
31559f35 JD	455	unsigned int
	456	cfg80211_chandef_dfs_cac_time(struct wiphy *wiphy,
	457	const struct cfg80211_chan_def *chandef);
04f39047	458
04f39047 SW	459	static inline unsigned int elapsed_jiffies_msecs(unsigned long start)
	460	{
	461	unsigned long end = jiffies;
	462
	463	if (end >= start)
	464	return jiffies_to_msecs(end - start);
	465
0ce12026	466	return jiffies_to_msecs(end + (ULONG_MAX - start) + 1);
04f39047 SW	467	}
04f39047 SW	468
26ab9a0c	469	void
8e95ea49	470	cfg80211_get_chan_state(struct wireless_dev *wdev,
26ab9a0c	471	struct ieee80211_channel **chan,
9e0e2961 MK	472	enum cfg80211_chan_mode *chanmode,
9e0e2961 MK	473	u8 *radar_detect);
26ab9a0c	474
e8c9bd5b	475	int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
683b6d3b	476	struct cfg80211_chan_def *chandef);
59bbb6f7	477
34850ab2 JB	478	int ieee80211_get_ratemask(struct ieee80211_supported_band *sband,
	479	const u8 *rates, unsigned int n_rates,
	480	u32 *mask);
	481
56d1893d	482	int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
0c317a02	483	enum nl80211_iftype iftype, u32 beacon_int);
56d1893d	484
dbbae26a MK	485	void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
	486	enum nl80211_iftype iftype, int num);
	487
f04c2203 MK	488	void __cfg80211_leave(struct cfg80211_registered_device *rdev,
f04c2203 MK	489	struct wireless_dev *wdev);
81256969 SG	490	void cfg80211_leave(struct cfg80211_registered_device *rdev,
	491	struct wireless_dev *wdev);
	492
f9f47529 JB	493	void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
	494	struct wireless_dev *wdev);
	495
cb3b7d87 AB	496	void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
	497	struct wireless_dev *wdev);
	498
d4e50c59 MK	499	#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
d4e50c59 MK	500
f7969969 JB	501	#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
	502	#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
	503	#else
	504	/*
	505	* Trick to enable using it as a condition,
	506	* and also not give a warning when it's
	507	* not used that way.
	508	*/
	509	#define CFG80211_DEV_WARN_ON(cond) ({bool __r = (cond); __r; })
	510	#endif
	511
704232c2	512	#endif /* __NET_WIRELESS_CORE_H */