[PATCH 4.14 40/80] virtio_net: fix adding vids on big-endian

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: "Michael S. Tsirkin" <m...@redhat.com>


[ Upstream commit d7fad4c840f33a6bd333dd7fbb3006edbcf0017a ]

Programming vids (adding or removing them) still passes
guest-endian values in the DMA buffer. That's wrong
if guest is big-endian and when virtio 1 is enabled.

Note: this is on top of a previous patch:
        virtio_net: split out ctrl buffer

Fixes: 9465a7a6f ("virtio_net: enable v1.0 support")
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
Acked-by: Jason Wang <jasow...@redhat.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/virtio_net.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -123,7 +123,7 @@ struct control_buf {
        struct virtio_net_ctrl_mq mq;
        u8 promisc;
        u8 allmulti;
-       u16 vid;
+       __virtio16 vid;
        u64 offloads;
 };
 
@@ -1602,7 +1602,7 @@ static int virtnet_vlan_rx_add_vid(struc
        struct virtnet_info *vi = netdev_priv(dev);
        struct scatterlist sg;
 
-       vi->ctrl->vid = vid;
+       vi->ctrl->vid = cpu_to_virtio16(vi->vdev, vid);
        sg_init_one(&sg, &vi->ctrl->vid, sizeof(vi->ctrl->vid));
 
        if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
@@ -1617,7 +1617,7 @@ static int virtnet_vlan_rx_kill_vid(stru
        struct virtnet_info *vi = netdev_priv(dev);
        struct scatterlist sg;
 
-       vi->ctrl->vid = vid;
+       vi->ctrl->vid = cpu_to_virtio16(vi->vdev, vid);
        sg_init_one(&sg, &vi->ctrl->vid, sizeof(vi->ctrl->vid));
 
        if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,