From: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Date: Tue, 29 Jan 2019 00:45:55 +0000 (+0900)
Subject: virtio_net: Fix not restoring real_num_rx_queues
X-Git-Tag: v4.14.98~33
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=25d497c38cd3a96d8a20b04c0b1a643951628a92;p=users%2Fjedix%2Flinux-maple.git

virtio_net: Fix not restoring real_num_rx_queues

[ Upstream commit 188313c137c4f76afd0862f50dbc185b198b9e2a ]

When _virtnet_set_queues() failed we did not restore real_num_rx_queues.
Fix this by placing the change of real_num_rx_queues after
_virtnet_set_queues().
This order is also in line with virtnet_set_channels().

Fixes: 4941d472bf95 ("virtio-net: do not reset during XDP set")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 50c0ae772b5a1..0b457c81c4482 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2031,10 +2031,10 @@ static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog,
 		}
 	}
 
-	netif_set_real_num_rx_queues(dev, curr_qp + xdp_qp);
 	err = _virtnet_set_queues(vi, curr_qp + xdp_qp);
 	if (err)
 		goto err;
+	netif_set_real_num_rx_queues(dev, curr_qp + xdp_qp);
 	vi->xdp_queue_pairs = xdp_qp;
 
 	for (i = 0; i < vi->max_queue_pairs; i++) {