root/net/wireless/core.h

INCLUDED FROM

DEFINITIONS

1. wiphy_to_dev

/*
 * 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, enum reg_set_by setby);

#endif /* __NET_WIRELESS_CORE_H */