9d308429a9
When we leave an IBSS, we should clear the SSID and not just the BSSID, but since WEXT allows configuring while the interface is down we must not clear it when leaving due to taking the iface down, so some complications are needed. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
155 lines
4.7 KiB
C
155 lines
4.7 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 <linux/kref.h>
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#include <linux/rbtree.h>
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#include <net/genetlink.h>
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#include <net/cfg80211.h>
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#include "reg.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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/* ISO / IEC 3166 alpha2 for which this device is receiving
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* country IEs on, this can help disregard country IEs from APs
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* on the same alpha2 quickly. The alpha2 may differ from
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* cfg80211_regdomain's alpha2 when an intersection has occurred.
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* If the AP is reconfigured this can also be used to tell us if
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* the country on the country IE changed. */
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char country_ie_alpha2[2];
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/* If a Country IE has been received this tells us the environment
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* which its telling us its in. This defaults to ENVIRON_ANY */
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enum environment_cap env;
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/* wiphy index, internal only */
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int wiphy_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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/* BSSes/scanning */
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spinlock_t bss_lock;
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struct list_head bss_list;
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struct rb_root bss_tree;
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u32 bss_generation;
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struct cfg80211_scan_request *scan_req; /* protected by RTNL */
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unsigned long suspend_at;
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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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/* Note 0 is valid, hence phy0 */
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static inline
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bool wiphy_idx_valid(int wiphy_idx)
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{
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return (wiphy_idx >= 0);
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}
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extern struct mutex cfg80211_mutex;
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extern struct list_head cfg80211_drv_list;
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#define assert_cfg80211_lock() WARN_ON(!mutex_is_locked(&cfg80211_mutex))
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/*
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* You can use this to mark a wiphy_idx as not having an associated wiphy.
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* It guarantees cfg80211_drv_by_wiphy_idx(wiphy_idx) will return NULL
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*/
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#define WIPHY_IDX_STALE -1
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struct cfg80211_internal_bss {
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struct list_head list;
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struct rb_node rbn;
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unsigned long ts;
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struct kref ref;
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bool hold, ies_allocated;
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/* must be last because of priv member */
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struct cfg80211_bss pub;
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};
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struct cfg80211_registered_device *cfg80211_drv_by_wiphy_idx(int wiphy_idx);
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int get_wiphy_idx(struct wiphy *wiphy);
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struct cfg80211_registered_device *
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__cfg80211_drv_from_info(struct genl_info *info);
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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_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_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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/* requires cfg80211_drv_mutex to be held! */
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struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx);
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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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void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
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void wiphy_update_regulatory(struct wiphy *wiphy,
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enum nl80211_reg_initiator setby);
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void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
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void cfg80211_bss_age(struct cfg80211_registered_device *dev,
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unsigned long age_secs);
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/* IBSS */
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int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
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struct net_device *dev,
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struct cfg80211_ibss_params *params);
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void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
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int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
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struct net_device *dev, bool nowext);
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#endif /* __NET_WIRELESS_CORE_H */
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