/* * Wireless configuration interface internals. * * Copyright 2006-2010	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;	/* protected by devlist_mtx or RCU */	struct list_head netdev_list;	int devlist_generation;	int opencount; /* also protected by devlist_mtx */	wait_queue_head_t dev_wait; 	u32 ap_beacons_nlpid; 	/* 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 mutex sched_scan_mtx; #ifdef CONFIG_NL80211_TESTMODE	struct genl_info *testmode_info;#endif 	struct work_struct conn_work;	struct work_struct event_work; 	struct cfg80211_wowlan *wowlan; 	/* 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 inlinestruct 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 inlinebool wiphy_idx_valid(int wiphy_idx){	return wiphy_idx >= 0;} static inline voidcfg80211_rdev_free_wowlan(struct cfg80211_registered_device *rdev){	int i; 	if (!rdev->wowlan)		return;	for (i = 0; i < rdev->wowlan->n_patterns; i++)		kfree(rdev->wowlan->patterns[i].mask);	kfree(rdev->wowlan->patterns);	kfree(rdev->wowlan);} extern struct workqueue_struct *cfg80211_wq;extern struct mutex cfg80211_mutex;extern struct list_head cfg80211_rdev_list;extern int cfg80211_rdev_list_generation; static inline void assert_cfg80211_lock(void){	lockdep_assert_held(&cfg80211_mutex);} /* * You can use this to mark a wiphy_idx as not having an associated wiphy. * It guarantees cfg80211_rdev_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 beacon_ies_allocated;	bool proberesp_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_rdev_by_wiphy_idx(int wiphy_idx);int get_wiphy_idx(struct wiphy *wiphy); struct cfg80211_registered_device *__cfg80211_rdev_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_unlock_rdev() * 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 rdev 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_rdev_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(struct net *net, int ifindex); int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,			  struct net *net); static inline void cfg80211_lock_rdev(struct cfg80211_registered_device *rdev){	mutex_lock(&rdev->mtx);} static inline void cfg80211_unlock_rdev(struct cfg80211_registered_device *rdev){	BUG_ON(IS_ERR(rdev) || !rdev);	mutex_unlock(&rdev->mtx);} 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) lockdep_assert_held(&(rdev)->mtx)#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx) 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;};  /* free object */extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev); extern 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,			 const struct mesh_setup *setup,			 const struct mesh_config *conf);int cfg80211_join_mesh(struct cfg80211_registered_device *rdev,		       struct net_device *dev,		       const struct mesh_setup *setup,		       const struct mesh_config *conf);int cfg80211_leave_mesh(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);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);int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,			  struct net_device *dev,			  struct ieee80211_channel *chan,			  const u8 *bssid, const u8 *prev_bssid,			  const u8 *ssid, int ssid_len,			  const u8 *ie, int ie_len, bool use_mfp,			  struct cfg80211_crypto_settings *crypt,			  u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,			  struct ieee80211_ht_cap *ht_capa_mask);int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,			struct net_device *dev, struct ieee80211_channel *chan,			const u8 *bssid, const u8 *prev_bssid,			const u8 *ssid, int ssid_len,			const u8 *ie, int ie_len, bool use_mfp,			struct cfg80211_crypto_settings *crypt,			u32 assoc_flags, struct ieee80211_ht_cap *ht_capa,			struct ieee80211_ht_cap *ht_capa_mask);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_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);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);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 net_device *dev,			  struct ieee80211_channel *chan, bool offchan,			  enum nl80211_channel_type channel_type,			  bool channel_type_valid, unsigned int wait,			  const u8 *buf, size_t len, bool no_cck,			  bool dont_wait_for_ack, u64 *cookie);void cfg80211_oper_and_ht_capa(struct ieee80211_ht_cap *ht_capa,			       const struct ieee80211_ht_cap *ht_capa_mask); /* SME */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);int cfg80211_connect(struct cfg80211_registered_device *rdev,		     struct net_device *dev,		     struct cfg80211_connect_params *connect,		     struct cfg80211_cached_keys *connkeys);int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,			  struct net_device *dev, u16 reason,			  bool wextev);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); void cfg80211_conn_work(struct work_struct *work);void cfg80211_sme_failed_assoc(struct wireless_dev *wdev);bool cfg80211_sme_failed_reassoc(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_disconnected(struct net_device *dev, const 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,			   struct cfg80211_internal_bss *bss);void __cfg80211_scan_done(struct work_struct *wk);void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak);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); int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev,				  struct wireless_dev *wdev,				  enum nl80211_iftype iftype); static inline intcfg80211_can_add_interface(struct cfg80211_registered_device *rdev,			   enum nl80211_iftype iftype){	return cfg80211_can_change_interface(rdev, NULL, iftype);} struct ieee80211_channel *rdev_freq_to_chan(struct cfg80211_registered_device *rdev,		  int freq, enum nl80211_channel_type channel_type);int cfg80211_set_freq(struct cfg80211_registered_device *rdev,		      struct wireless_dev *wdev, int freq,		      enum nl80211_channel_type channel_type); 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); #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 */