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Diffstat (limited to 'package/mac80211/src/wireless/core.h')
-rw-r--r-- | package/mac80211/src/wireless/core.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/package/mac80211/src/wireless/core.h b/package/mac80211/src/wireless/core.h new file mode 100644 index 000000000..eb0f846b4 --- /dev/null +++ b/package/mac80211/src/wireless/core.h @@ -0,0 +1,81 @@ +/* + * 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); + +#endif /* __NET_WIRELESS_CORE_H */ |