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mac80211: fix A-MSDU aggregation with fast-xmit + txq 

A-MSDU aggregation alters the QoS header after a frame has been
enqueued, so it needs to be ready before enqueue and not overwritten
again afterwards

Fixes: bb42f2d13f ("mac80211: Move reorder-sensitive TX handlers to after TXQ dequeue")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2016-11-04 10:27:54 +01:00 committed by Johannes Berg
parent fff712cbe3
commit a786f96da0
1 changed files with 5 additions and 1 deletions
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6
net/mac80211/tx.c
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@ -3210,7 +3210,6 @@ static void ieee80211_xmit_fast_finish(struct ieee80211_sub_if_data *sdata,
if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
*ieee80211_get_qos_ctl(hdr) = tid;
hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
} else {
info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
@ -3335,6 +3334,11 @@ static bool ieee80211_xmit_fast(struct ieee80211_sub_if_data *sdata,
(tid_tx ? IEEE80211_TX_CTL_AMPDU : 0);
info->control.flags = IEEE80211_TX_CTRL_FAST_XMIT;
if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
tid = skb->priority & IEEE80211_QOS_CTL_TAG1D_MASK;
*ieee80211_get_qos_ctl(hdr) = tid;
}
__skb_queue_head_init(&tx.skbs);
tx.flags = IEEE80211_TX_UNICAST;