From: Felix Fietkau <nbd@nbd.name>
To: linux-wireless@vger.kernel.org
Subject: [PATCH] mt76: do not store aggregation sequence number for null-data frames
Date: Mon, 8 Oct 2018 13:46:12 +0200 [thread overview]
Message-ID: <20181008114612.44544-1-nbd@nbd.name> (raw)
Fixes a rare corner case where a BlockAckReq might get the wrong
sequence number.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
drivers/net/wireless/mediatek/mt76/tx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index bf0e9e666bc4..7cbce03aa65b 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -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;
--
2.17.0
reply other threads:[~2018-10-08 11:46 UTC|newest]
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