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mt76: check qos ack policy before reordering packets 

Do not attempt to reorder packets not part of a BA session

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Felix Fietkau 2018-04-03 21:52:54 +02:00 committed by Kalle Valo
parent 18efed59fa
commit 1af83148a4
1 changed files with 8 additions and 1 deletions
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9
drivers/net/wireless/mediatek/mt76/agg-rx.c
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@ -147,12 +147,13 @@ mt76_rx_aggr_check_ctl(struct sk_buff *skb, struct sk_buff_head *frames)
void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames)
{
struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct mt76_wcid *wcid = status->wcid;
struct ieee80211_sta *sta;
struct mt76_rx_tid *tid;
bool sn_less;
u16 seqno, head, size;
u8 idx;
u8 ackp, idx;
__skb_queue_tail(frames, skb);
@ -165,6 +166,12 @@ void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames)
return;
}
/* not part of a BA session */
ackp = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_ACK_POLICY_MASK;
if (ackp != IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK &&
ackp != IEEE80211_QOS_CTL_ACK_POLICY_NORMAL)
return;
tid = rcu_dereference(wcid->aggr[status->tid]);
if (!tid)
return;