virtio_net: fix endian-ness for RSS

Using native endian-ness for device supplied fields is wrong
on BE platforms. Sparse warns about this.

Fixes: 91f41f01 ("drivers/net/virtio_net: Added RSS hash report.")
Cc: "Andrew Melnychenko" <andrew@daynix.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/virtio_net.c

@@ -1199,7 +1199,7 @@ static void virtio_skb_set_hash(const struct virtio_net_hdr_v1_hash *hdr_hash,
 	if (!hdr_hash || !skb)
 		return;
 
-	switch ((int)hdr_hash->hash_report) {
+	switch (__le16_to_cpu(hdr_hash->hash_report)) {
 	case VIRTIO_NET_HASH_REPORT_TCPv4:
 	case VIRTIO_NET_HASH_REPORT_UDPv4:
 	case VIRTIO_NET_HASH_REPORT_TCPv6:
@@ -1217,7 +1217,7 @@ static void virtio_skb_set_hash(const struct virtio_net_hdr_v1_hash *hdr_hash,
 	default:
 		rss_hash_type = PKT_HASH_TYPE_NONE;
 	}
-	skb_set_hash(skb, (unsigned int)hdr_hash->hash_value, rss_hash_type);
+	skb_set_hash(skb, __le32_to_cpu(hdr_hash->hash_value), rss_hash_type);
 }
 
 static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq,