5568296573
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* Wireless configuration interface internals.
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*
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* Copyright 2006, 2007 Johannes Berg <johannes@sipsolutions.net>
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*/
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#ifndef __NET_WIRELESS_CORE_H
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#define __NET_WIRELESS_CORE_H
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#include <linux/mutex.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <net/genetlink.h>
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#include <net/wireless.h>
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#include <net/cfg80211.h>
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struct cfg80211_registered_device {
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struct cfg80211_ops *ops;
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struct list_head list;
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/* we hold this mutex during any call so that
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* we cannot do multiple calls at once, and also
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* to avoid the deregister call to proceed while
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* any call is in progress */
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struct mutex mtx;
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/* wiphy index, internal only */
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int idx;
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/* associate netdev list */
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struct mutex devlist_mtx;
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struct list_head netdev_list;
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/* must be last because of the way we do wiphy_priv(),
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* and it should at least be aligned to NETDEV_ALIGN */
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struct wiphy wiphy __attribute__((__aligned__(NETDEV_ALIGN)));
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};
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static inline
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struct cfg80211_registered_device *wiphy_to_dev(struct wiphy *wiphy)
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{
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BUG_ON(!wiphy);
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return container_of(wiphy, struct cfg80211_registered_device, wiphy);
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}
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extern struct mutex cfg80211_drv_mutex;
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extern struct list_head cfg80211_drv_list;
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/*
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* This function returns a pointer to the driver
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* that the genl_info item that is passed refers to.
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* If successful, it returns non-NULL and also locks
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* the driver's mutex!
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*
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* This means that you need to call cfg80211_put_dev()
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* before being allowed to acquire &cfg80211_drv_mutex!
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*
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* This is necessary because we need to lock the global
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* mutex to get an item off the list safely, and then
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* we lock the drv mutex so it doesn't go away under us.
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*
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* We don't want to keep cfg80211_drv_mutex locked
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* for all the time in order to allow requests on
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* other interfaces to go through at the same time.
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*
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* The result of this can be a PTR_ERR and hence must
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* be checked with IS_ERR() for errors.
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*/
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extern struct cfg80211_registered_device *
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cfg80211_get_dev_from_info(struct genl_info *info);
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/* identical to cfg80211_get_dev_from_info but only operate on ifindex */
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extern struct cfg80211_registered_device *
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cfg80211_get_dev_from_ifindex(int ifindex);
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extern void cfg80211_put_dev(struct cfg80211_registered_device *drv);
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/* free object */
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extern void cfg80211_dev_free(struct cfg80211_registered_device *drv);
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extern int cfg80211_dev_rename(struct cfg80211_registered_device *drv,
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char *newname);
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#endif /* __NET_WIRELESS_CORE_H */
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