blob: eb0f846b40dff4ba9ae6a6b741c5758023b3366b [file] [log] [blame]
* Wireless configuration interface internals.
* Copyright 2006, 2007 Johannes Berg <>
#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)
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);
#endif /* __NET_WIRELESS_CORE_H */