vhost-vsock: add virtio sockets device
Implement the new virtio sockets device for host<->guest communication
using the Sockets API. Most of the work is done in a vhost kernel
driver so that virtio-vsock can hook into the AF_VSOCK address family.
The QEMU vhost-vsock device handles configuration and live migration
while the rx/tx happens in the vhost_vsock.ko Linux kernel driver.
The vsock device must be given a CID (host-wide unique address):
# qemu -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3 ...
For more information see:
http://qemu-project.org/Features/VirtioVsock
[Endianness fixes and virtio-ccw support by Claudio Imbrenda
<imbrenda@linux.vnet.ibm.com>]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
[mst: rebase to master]
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/configure b/configure
index 5a9bda1..331c36f 100755
--- a/configure
+++ b/configure
@@ -229,6 +229,7 @@
vhost_net="no"
vhost_scsi="no"
+vhost_vsock="no"
kvm="no"
rdma=""
gprof="no"
@@ -674,6 +675,7 @@
kvm="yes"
vhost_net="yes"
vhost_scsi="yes"
+ vhost_vsock="yes"
QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers $QEMU_INCLUDES"
;;
esac
@@ -1017,6 +1019,10 @@
;;
--enable-vhost-scsi) vhost_scsi="yes"
;;
+ --disable-vhost-vsock) vhost_vsock="no"
+ ;;
+ --enable-vhost-vsock) vhost_vsock="yes"
+ ;;
--disable-opengl) opengl="no"
;;
--enable-opengl) opengl="yes"
@@ -4883,6 +4889,7 @@
echo "libcap-ng support $cap_ng"
echo "vhost-net support $vhost_net"
echo "vhost-scsi support $vhost_scsi"
+echo "vhost-vsock support $vhost_vsock"
echo "Trace backends $trace_backends"
if have_backend "simple"; then
echo "Trace output file $trace_file-<pid>"
@@ -5264,6 +5271,9 @@
if test "$vhost_net" = "yes" ; then
echo "CONFIG_VHOST_NET_USED=y" >> $config_host_mak
fi
+if test "$vhost_vsock" = "yes" ; then
+ echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
+fi
if test "$blobs" = "yes" ; then
echo "INSTALL_BLOBS=yes" >> $config_host_mak
fi
