VSOCK: fix loopback on big-endian systems

[ Upstream commit e5ab564c9ebee77794842ca7d7476147b83d6a27 ]

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: b9116823189e85ccf384 ("VSOCK: add loopback to virtio_transport")

Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c
index 403d86e..fdb2944 100644 (file)
--- a/net/vmw_vsock/virtio_transport.c
+++ b/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)