From: Parav Pandit <parav@nvidia.com>
Date: Thu, 2 Feb 2023 16:35:16 +0000 (+0200)
Subject: virtio-net: Keep stop() to follow mirror sequence of open()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=63b114042d8a9c02d9939889177c36dbdb17a588;p=linux.git

virtio-net: Keep stop() to follow mirror sequence of open()

Cited commit in fixes tag frees rxq xdp info while RQ NAPI is
still enabled and packet processing may be ongoing.

Follow the mirror sequence of open() in the stop() callback.
This ensures that when rxq info is unregistered, no rx
packet processing is ongoing.

Fixes: 754b8a21a96d ("virtio_net: setup xdp_rxq_info")
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Parav Pandit <parav@nvidia.com>
Link: https://lore.kernel.org/r/20230202163516.12559-1-parav@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 6df14dd5bf460..61e33e4dd0cd6 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2158,8 +2158,8 @@ static int virtnet_close(struct net_device *dev)
 	cancel_delayed_work_sync(&vi->refill);
 
 	for (i = 0; i < vi->max_queue_pairs; i++) {
-		xdp_rxq_info_unreg(&vi->rq[i].xdp_rxq);
 		napi_disable(&vi->rq[i].napi);
+		xdp_rxq_info_unreg(&vi->rq[i].xdp_rxq);
 		virtnet_napi_tx_disable(&vi->sq[i].napi);
 	}