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mac80211: clear TX control on filtered frames

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When an skb survived a round-trip through the driver
and needs to be re-used, its control information is
definitely not valid any more, the driver will have
overwritten it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2010-01-17 01:47:56 +01:00 committed by John W. Linville
parent edc6ccb7b9
commit 697e6a0fb0
1 changed files with 8 additions and 0 deletions
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8
net/mac80211/status.c
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@ -69,6 +69,14 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
*/
goto drop;
/*
* This skb 'survived' a round-trip through the driver, and
* hopefully the driver didn't mangle it too badly. However,
* we can definitely not rely on the the control information
* being correct. Clear it so we don't get junk there.
*/
memset(&info->control, 0, sizeof(info->control));
sta->tx_filtered_count++;
/*