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mac80211: make ieee80211_find_sta per virtual interface

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Since we have a TODO item to make all station
management dependent on virtual interfaces, I
figured I'd start with pushing such a change
to drivers before more drivers start using the
ieee80211_find_sta() API with a hw pointer and
cause us grief later on.

For now continue exporting the old API in form
of ieee80211_find_sta_by_hw(), but discourage
its use strongly.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-11-04 14:42:28 +01:00
committed by John W. Linville
parent 7fdad987d6
commit 5ed176e1c4
7 changed files with 47 additions and 9 deletions
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25
include/net/mac80211.h
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@@ -2106,15 +2106,36 @@ void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw, const u8 *ra,
/**
* ieee80211_find_sta - find a station
*
* @hw: pointer as obtained from ieee80211_alloc_hw()
* @vif: virtual interface to look for station on
* @addr: station's address
*
* This function must be called under RCU lock and the
* resulting pointer is only valid under RCU lock as well.
*/
struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw,
struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
const u8 *addr);
/**
* ieee80211_find_sta_by_hw - find a station on hardware
*
* @hw: pointer as obtained from ieee80211_alloc_hw()
* @addr: station's address
*
* This function must be called under RCU lock and the
* resulting pointer is only valid under RCU lock as well.
*
* NOTE: This function should not be used! When mac80211 is converted
* internally to properly keep track of stations on multiple
* virtual interfaces, it will not always know which station to
* return here since a single address might be used by multiple
* logical stations (e.g. consider a station connecting to another
* BSSID on the same AP hardware without disconnecting first).
*
* DO NOT USE THIS FUNCTION.
*/
struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw,
const u8 *addr);
/**
* ieee80211_beacon_loss - inform hardware does not receive beacons
*