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mac80211: fix queue selection for packets injected via monitor interface

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Commit 'mac80211: fix skb buffering issue' added an ->ndo_select_queue()
for monitor interfaces which can end up dereferencing ieee802_1d_to_ac[]
beyond the end of the array for injected data packets (as skb->priority
isn't guaranteed to be zero or within [0:7]), which then triggers the
WARN_ON in net/core/dev.c:dev_cap_txqueue().  Fix this by always setting
the priority to zero on injected data frames.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Lennert Buytenhek 2010-01-07 15:01:42 +01:00 committed by John W. Linville
parent 8a5b33f554
commit 045cfb71a3
1 changed files with 1 additions and 0 deletions
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net/mac80211/iface.c
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@ -685,6 +685,7 @@ static u16 ieee80211_monitor_select_queue(struct net_device *dev,
return ieee802_1d_to_ac[skb->priority];
}
skb->priority = 0;
return ieee80211_downgrade_queue(local, skb);
}