linux-kernel - [PATCH] net/net_failover: fix queue exceeding warning

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Date:   Tue, 21 Mar 2023 10:29:52 +0800
From:   Faicker Mo <faicker.mo@...oud.cn>
To:     faicker.mo@...oud.cn
Cc:     Sridhar Samudrala <sridhar.samudrala@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] net/net_failover: fix queue exceeding warning

If the primary device queue number is bigger than the default 16,
there is a warning about the queue exceeding when tx from the
net_failover device.

Signed-off-by: Faicker Mo <faicker.mo@...oud.cn>
---
 drivers/net/net_failover.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/net/net_failover.c b/drivers/net/net_failover.c
index 7a28e082436e..d0c916a53d7c 100644
--- a/drivers/net/net_failover.c
+++ b/drivers/net/net_failover.c
@@ -130,14 +130,10 @@ static u16 net_failover_select_queue(struct net_device *dev,
 			txq = ops->ndo_select_queue(primary_dev, skb, sb_dev);
 		else
 			txq = netdev_pick_tx(primary_dev, skb, NULL);
-
-		qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
-
-		return txq;
+	} else {
+		txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
 	}
 
-	txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 0;
-
 	/* Save the original txq to restore before passing to the driver */
 	qdisc_skb_cb(skb)->slave_dev_queue_mapping = skb->queue_mapping;
 
-- 
2.39.1