net/wireless/core.h - kernel/msm-5.4 - Gitiles

 /*
  * Wireless configuration interface internals.
  *
  * Copyright 2006-2009	Johannes Berg <johannes@sipsolutions.net>
  */
 #ifndef __NET_WIRELESS_CORE_H
 #define __NET_WIRELESS_CORE_H
 #include <linux/mutex.h>
 #include <linux/list.h>
 #include <linux/netdevice.h>
 #include <linux/kref.h>
 #include <linux/rbtree.h>
 #include <linux/debugfs.h>
 #include <linux/rfkill.h>
 #include <linux/workqueue.h>
 #include <net/genetlink.h>
 #include <net/cfg80211.h>
 #include "reg.h"

 struct cfg80211_registered_device {
 	const struct cfg80211_ops *ops;
 	struct list_head list;
 	/* we hold this mutex during any call so that
 	 * we cannot do multiple calls at once, and also
 	 * to avoid the deregister call to proceed while
 	 * any call is in progress */
 	struct mutex mtx;

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

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

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

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

 	/* associate netdev list */
 	struct mutex devlist_mtx;
 	struct list_head netdev_list;

 	/* 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 */
 	unsigned long suspend_at;

 #ifdef CONFIG_NL80211_TESTMODE
 	struct genl_info *testmode_info;
 #endif

 	struct work_struct conn_work;

 #ifdef CONFIG_CFG80211_DEBUGFS
 	/* Debugfs entries */
 	struct wiphy_debugfsdentries {
 		struct dentry *rts_threshold;
 		struct dentry *fragmentation_threshold;
 		struct dentry *short_retry_limit;
 		struct dentry *long_retry_limit;
 		struct dentry *ht40allow_map;
 	} debugfs;
 #endif

 	/* must be last because of the way we do wiphy_priv(),
 	 * and it should at least be aligned to NETDEV_ALIGN */
 	struct wiphy wiphy __attribute__((__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);
 }

 /* Note 0 is valid, hence phy0 */
 static inline
 bool wiphy_idx_valid(int wiphy_idx)
 {
 	return (wiphy_idx >= 0);
 }

 extern struct mutex cfg80211_mutex;
 extern struct list_head cfg80211_drv_list;

 #define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))

 /*
  * You can use this to mark a wiphy_idx as not having an associated wiphy.
  * It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL
  */
 #define WIPHY_IDX_STALE -1

 struct cfg80211_internal_bss {
 	struct list_head list;
 	struct rb_node rbn;
 	unsigned long ts;
 	struct kref ref;
 	atomic_t hold;
 	bool ies_allocated;

 	/* 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_drv_by_wiphy_idx(int wiphy_idx);
 int get_wiphy_idx(struct wiphy *wiphy);

 struct cfg80211_registered_device *
 __cfg80211_drv_from_info(struct genl_info *info);

 /*
  * This function returns a pointer to the driver
  * that the genl_info item that is passed refers to.
  * If successful, it returns non-NULL and also locks
  * the driver's mutex!
  *
  * This means that you need to call cfg80211_put_dev()
  * before being allowed to acquire &cfg80211_mutex!
  *
  * This is necessary because we need to lock the global
  * mutex to get an item off the list safely, and then
  * we lock the drv mutex so it doesn't go away under us.
  *
  * We don't want to keep cfg80211_mutex locked
  * for all the time in order to allow requests on
  * other interfaces to go through at the same time.
  *
  * The result of this can be a PTR_ERR and hence must
  * be checked with IS_ERR() for errors.
  */
 extern struct cfg80211_registered_device *
 cfg80211_get_dev_from_info(struct genl_info *info);

 /* requires cfg80211_drv_mutex to be held! */
 struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);

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

 extern void cfg80211_put_dev(struct cfg80211_registered_device *drv);

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

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

 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
 void wiphy_update_regulatory(struct wiphy *wiphy,
 			     enum nl80211_reg_initiator setby);

 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);
 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);

 /* 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);
 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,
 			const u8 *ie, int ie_len, bool use_mfp,
 			struct cfg80211_crypto_settings *crypt);
 int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
 			 struct net_device *dev, const u8 *bssid,
 			 const u8 *ie, int ie_len, u16 reason);
 int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
 			   struct net_device *dev, const u8 *bssid,
 			   const u8 *ie, int ie_len, u16 reason);
 void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
 			struct net_device *dev);

 /* SME */
 int cfg80211_connect(struct cfg80211_registered_device *rdev,
 		     struct net_device *dev,
 		     struct cfg80211_connect_params *connect);
 int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
 			struct net_device *dev, u16 reason,
 			bool wextev);

 void cfg80211_conn_work(struct work_struct *work);

 /* internal helpers */
 int cfg80211_validate_key_settings(struct key_params *params, int key_idx,
 				   const u8 *mac_addr);
 void __cfg80211_disconnected(struct net_device *dev, gfp_t gfp, u8 *ie,
 			     size_t ie_len, u16 reason, bool from_ap);
 void cfg80211_sme_scan_done(struct net_device *dev);
 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
 void cfg80211_sme_disassoc(struct net_device *dev, int idx);

 #endif /* __NET_WIRELESS_CORE_H */
	/*
	* Wireless configuration interface internals.
	*
	* Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
	*/
	#ifndef __NET_WIRELESS_CORE_H
	#define __NET_WIRELESS_CORE_H
	#include <linux/mutex.h>
	#include <linux/list.h>
	#include <linux/netdevice.h>
	#include <linux/kref.h>
	#include <linux/rbtree.h>
	#include <linux/debugfs.h>
	#include <linux/rfkill.h>
	#include <linux/workqueue.h>
	#include <net/genetlink.h>
	#include <net/cfg80211.h>
	#include "reg.h"

	struct cfg80211_registered_device {
	const struct cfg80211_ops *ops;
	struct list_head list;
	/* we hold this mutex during any call so that
	* we cannot do multiple calls at once, and also
	* to avoid the deregister call to proceed while
	* any call is in progress */
	struct mutex mtx;

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

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

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

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

	/* associate netdev list */
	struct mutex devlist_mtx;
	struct list_head netdev_list;

	/* 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 */
	unsigned long suspend_at;

	#ifdef CONFIG_NL80211_TESTMODE
	struct genl_info *testmode_info;
	#endif

	struct work_struct conn_work;

	#ifdef CONFIG_CFG80211_DEBUGFS
	/* Debugfs entries */
	struct wiphy_debugfsdentries {
	struct dentry *rts_threshold;
	struct dentry *fragmentation_threshold;
	struct dentry *short_retry_limit;
	struct dentry *long_retry_limit;
	struct dentry *ht40allow_map;
	} debugfs;
	#endif

	/* must be last because of the way we do wiphy_priv(),
	* and it should at least be aligned to NETDEV_ALIGN */
	struct wiphy wiphy __attribute__((__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);
	}

	/* Note 0 is valid, hence phy0 */
	static inline
	bool wiphy_idx_valid(int wiphy_idx)
	{
	return (wiphy_idx >= 0);
	}

	extern struct mutex cfg80211_mutex;
	extern struct list_head cfg80211_drv_list;

	#define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))

	/*
	* You can use this to mark a wiphy_idx as not having an associated wiphy.
	* It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL
	*/
	#define WIPHY_IDX_STALE -1

	struct cfg80211_internal_bss {
	struct list_head list;
	struct rb_node rbn;
	unsigned long ts;
	struct kref ref;
	atomic_t hold;
	bool ies_allocated;

	/* 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_drv_by_wiphy_idx(int wiphy_idx);
	int get_wiphy_idx(struct wiphy *wiphy);

	struct cfg80211_registered_device *
	__cfg80211_drv_from_info(struct genl_info *info);

	/*
	* This function returns a pointer to the driver
	* that the genl_info item that is passed refers to.
	* If successful, it returns non-NULL and also locks
	* the driver's mutex!
	*
	* This means that you need to call cfg80211_put_dev()
	* before being allowed to acquire &cfg80211_mutex!
	*
	* This is necessary because we need to lock the global
	* mutex to get an item off the list safely, and then
	* we lock the drv mutex so it doesn't go away under us.
	*
	* We don't want to keep cfg80211_mutex locked
	* for all the time in order to allow requests on
	* other interfaces to go through at the same time.
	*
	* The result of this can be a PTR_ERR and hence must
	* be checked with IS_ERR() for errors.
	*/
	extern struct cfg80211_registered_device *
	cfg80211_get_dev_from_info(struct genl_info *info);

	/* requires cfg80211_drv_mutex to be held! */
	struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);

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

	extern void cfg80211_put_dev(struct cfg80211_registered_device *drv);

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

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

	void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
	void wiphy_update_regulatory(struct wiphy *wiphy,
	enum nl80211_reg_initiator setby);

	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);
	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);

	/* 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);
	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,
	const u8 *ie, int ie_len, bool use_mfp,
	struct cfg80211_crypto_settings *crypt);
	int cfg80211_mlme_deauth(struct cfg80211_registered_device *rdev,
	struct net_device dev, const u8 bssid,
	const u8 *ie, int ie_len, u16 reason);
	int cfg80211_mlme_disassoc(struct cfg80211_registered_device *rdev,
	struct net_device dev, const u8 bssid,
	const u8 *ie, int ie_len, u16 reason);
	void cfg80211_mlme_down(struct cfg80211_registered_device *rdev,
	struct net_device *dev);

	/* SME */
	int cfg80211_connect(struct cfg80211_registered_device *rdev,
	struct net_device *dev,
	struct cfg80211_connect_params *connect);
	int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
	struct net_device *dev, u16 reason,
	bool wextev);

	void cfg80211_conn_work(struct work_struct *work);

	/* internal helpers */
	int cfg80211_validate_key_settings(struct key_params *params, int key_idx,
	const u8 *mac_addr);
	void __cfg80211_disconnected(struct net_device dev, gfp_t gfp, u8 ie,
	size_t ie_len, u16 reason, bool from_ap);
	void cfg80211_sme_scan_done(struct net_device *dev);
	void cfg80211_sme_rx_auth(struct net_device dev, const u8 buf, size_t len);
	void cfg80211_sme_disassoc(struct net_device *dev, int idx);

	#endif /* __NET_WIRELESS_CORE_H */