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mac80211: fix rx monitor filter refcounters

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This patch fixes an refcounting bug. Previously it
was possible to corrupt the per-device recv. filter
and monitor management counters when:
	iw dev wlanX set monitor [new flags]
was issued on an active monitor interface.

Acked-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter
2010-10-02 13:17:07 +02:00
committed by John W. Linville
parent 5a254ffe3f
commit 85416a4fa1
3 changed files with 54 additions and 24 deletions
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2
net/mac80211/ieee80211_i.h
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@@ -1132,6 +1132,8 @@ void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata);
void ieee80211_remove_interfaces(struct ieee80211_local *local);
u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
void ieee80211_recalc_idle(struct ieee80211_local *local);
void ieee80211_adjust_monitor_flags(struct ieee80211_sub_if_data *sdata,
const int offset);
static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
{