This is a note to let you know that I've just added the patch titled
veth: Store queue_mapping independently of XDP prog presence
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
veth-store-queue_mapping-independently-of-xdp-prog-p.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3b65f35128d1b6b01601993e29218f5a5cb734b1
Author: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
Date: Wed Mar 3 16:29:03 2021 +0100
veth: Store queue_mapping independently of XDP prog presence
[ Upstream commit edbea922025169c0e5cdca5ebf7bf5374cc5566c ]
Currently, veth_xmit() would call the skb_record_rx_queue() only when
there is XDP program loaded on peer interface in native mode.
If peer has XDP prog in generic mode, then netif_receive_generic_xdp()
has a call to netif_get_rxqueue(skb), so for multi-queue veth it will
not be possible to grab a correct rxq.
To fix that, store queue_mapping independently of XDP prog presence on
peer interface.
Fixes: 638264dc9022 ("veth: Support per queue XDP ring")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@xxxxxxxxx>
Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Acked-by: Toshiaki Makita <toshiaki.makita1@xxxxxxxxx>
Link: https://lore.kernel.org/bpf/20210303152903.11172-1-maciej.fijalkowski@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 8c737668008a..be18b243642f 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -301,8 +301,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev)
if (rxq < rcv->real_num_rx_queues) {
rq = &rcv_priv->rq[rxq];
rcv_xdp = rcu_access_pointer(rq->xdp_prog);
- if (rcv_xdp)
- skb_record_rx_queue(skb, rxq);
+ skb_record_rx_queue(skb, rxq);
}
skb_tx_timestamp(skb);
