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mt76: do not store aggregation sequence number for null-data frames 

Fixes a rare corner case where a BlockAckReq might get the wrong
sequence number.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2018-10-08 10:39:24 +02:00
parent 09580a1ec4
commit 5155938d8a
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/mediatek/mt76/tx.c
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@ -96,7 +96,8 @@ mt76_check_agg_ssn(struct mt76_txq *mtxq, struct sk_buff *skb)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
if (!ieee80211_is_data_qos(hdr->frame_control))
if (!ieee80211_is_data_qos(hdr->frame_control) ||
!ieee80211_is_data_present(hdr->frame_control))
return;
mtxq->agg_ssn = le16_to_cpu(hdr->seq_ctrl) + 0x10;