| /* |
| * 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; |
| int devlist_generation; |
| int opencount; /* also protected by devlist_mtx */ |
| wait_queue_head_t dev_wait; |
| |
| /* 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; |
| struct work_struct scan_done_wk; |
| |
| #ifdef CONFIG_NL80211_TESTMODE |
| struct genl_info *testmode_info; |
| #endif |
| |
| struct work_struct conn_work; |
| struct work_struct event_work; |
| |
| /* current channel */ |
| struct ieee80211_channel *channel; |
| |
| /* 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_rdev_list; |
| extern int cfg80211_rdev_list_generation; |
| |
| #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_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 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_ref_bss(struct cfg80211_internal_bss *bss) |
| { |
| kref_get(&bss->ref); |
| } |
| |
| 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) WARN_ON(!mutex_is_locked(&(rdev)->mtx)); |
| #define ASSERT_WDEV_LOCK(wdev) WARN_ON(!mutex_is_locked(&(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 { |
| u8 bssid[ETH_ALEN]; |
| const u8 *req_ie; |
| const u8 *resp_ie; |
| size_t req_ie_len; |
| size_t resp_ie_len; |
| } 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 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, |
| 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); |
| |
| /* 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); |
| 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); |
| 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_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); |
| 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); |
| |
| /* 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, const u8 *bssid, |
| 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 */ |
| int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev, |
| struct key_params *params, int key_idx, |
| 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, int idx); |
| void __cfg80211_scan_done(struct work_struct *wk); |
| void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak); |
| 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); |
| |
| struct ieee80211_channel * |
| rdev_fixed_channel(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *for_wdev); |
| int rdev_set_freq(struct cfg80211_registered_device *rdev, |
| struct wireless_dev *for_wdev, |
| int freq, enum nl80211_channel_type channel_type); |
| |
| #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 */ |