linux-kernel - [PATCH 5.15 320/667] mt76: do not attempt to reorder received 802.3 packets without agg session

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Message-Id: <20220607164944.368749761@linuxfoundation.org>
Date:   Tue,  7 Jun 2022 18:59:45 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Felix Fietkau <nbd@....name>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 320/667] mt76: do not attempt to reorder received 802.3 packets without agg session

From: Felix Fietkau <nbd@....name>

[ Upstream commit 3968a66475b40691c37b5e6c76975f699671e10e ]

Fixes potential latency / packet drop issues in cases where a BA session has
not (yet) been established.

Fixes: e195dad14115 ("mt76: add support for 802.3 rx frames")
Signed-off-by: Felix Fietkau <nbd@....name>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/mediatek/mt76/agg-rx.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/agg-rx.c b/drivers/net/wireless/mediatek/mt76/agg-rx.c
index 72622220051b..6c8b44194579 100644
--- a/drivers/net/wireless/mediatek/mt76/agg-rx.c
+++ b/drivers/net/wireless/mediatek/mt76/agg-rx.c
@@ -162,8 +162,9 @@ void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames)
 	if (!sta)
 		return;
 
-	if (!status->aggr && !(status->flag & RX_FLAG_8023)) {
-		mt76_rx_aggr_check_ctl(skb, frames);
+	if (!status->aggr) {
+		if (!(status->flag & RX_FLAG_8023))
+			mt76_rx_aggr_check_ctl(skb, frames);
 		return;
 	}
 
-- 
2.35.1