VSOCK: fix loopback on big-endian systems

[ Upstream commit e5ab564 ]

The dst_cid and src_cid are 64 bits, therefore 64 bit accessors should be
used, and in fact in virtio_transport_common.c only 64 bit accessors are
used. Using 32 bit accessors for 64 bit values breaks big endian systems.

This patch fixes a wrong use of le32_to_cpu in virtio_transport_send_pkt.

Fixes: b911682 ("VSOCK: add loopback to virtio_transport")

Signed-off-by: Claudio Imbrenda <[email protected]>
Reviewed-by: Stefan Hajnoczi <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Claudio Imbrenda

net/vmw_vsock/virtio_transport.c

@@ -201,7 +201,7 @@ virtio_transport_send_pkt(struct virtio_vsock_pkt *pkt)
 		return -ENODEV;
 	}
 
-	if (le32_to_cpu(pkt->hdr.dst_cid) == vsock->guest_cid)
+	if (le64_to_cpu(pkt->hdr.dst_cid) == vsock->guest_cid)
 		return virtio_transport_send_pkt_loopback(vsock, pkt);
 
 	if (pkt->reply)