/* * Wireless configuration interface internals. * * Copyright 2006, 2007 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 <net/genetlink.h> #include <net/wireless.h> #include <net/cfg80211.h> struct cfg80211_registered_device { 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; /* wiphy index, internal only */ int idx; /* associate netdev list */ struct mutex devlist_mtx; struct list_head netdev_list; /* 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); } extern struct mutex cfg80211_drv_mutex; extern struct list_head cfg80211_drv_list; /* * 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_drv_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_drv_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); /* 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); #endif /* __NET_WIRELESS_CORE_H */