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mac80211: allow transmitting deauth with tainted key

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When we had a connection for WoWLAN and after resume it
needed to be disconnected, the previous commit enabled
sending a deauth frame to the AP. This frame would not
go through on MFP-enabled networks as the key for it is
marked tainted before the frame is transmitted.

Allow a tainted key to be used for deauth frames. Worst
case, we'll use a wrong key because the PTK was rekeyed
while suspended, but more likely the PTK is still fine
and the taint flag really only applies to the GTK(s).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-01-29 11:41:38 +01:00
parent 2ca813ad61
commit e54faf29e0
1 changed files with 2 additions and 1 deletions
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3
net/mac80211/tx.c
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@ -594,7 +594,8 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
break;
}
if (unlikely(tx->key && tx->key->flags & KEY_FLAG_TAINTED))
if (unlikely(tx->key && tx->key->flags & KEY_FLAG_TAINTED &&
!ieee80211_is_deauth(hdr->frame_control)))
return TX_DROP;
if (!skip_hw && tx->key &&