fc0b9b0e1c
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>
42 lines
907 B
C
42 lines
907 B
C
/*
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* Vhost vsock virtio device
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*
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* Copyright 2015 Red Hat, Inc.
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*
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* Authors:
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* Stefan Hajnoczi <stefanha@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version. See the COPYING file in the
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* top-level directory.
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*/
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#ifndef _QEMU_VHOST_VSOCK_H
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#define _QEMU_VHOST_VSOCK_H
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#include "hw/virtio/virtio.h"
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#include "hw/virtio/vhost.h"
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#define TYPE_VHOST_VSOCK "vhost-vsock-device"
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#define VHOST_VSOCK(obj) \
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OBJECT_CHECK(VHostVSock, (obj), TYPE_VHOST_VSOCK)
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typedef struct {
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uint64_t guest_cid;
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char *vhostfd;
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} VHostVSockConf;
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typedef struct {
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/*< private >*/
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VirtIODevice parent;
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VHostVSockConf conf;
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struct vhost_virtqueue vhost_vqs[2];
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struct vhost_dev vhost_dev;
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VirtQueue *event_vq;
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QEMUTimer *post_load_timer;
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/*< public >*/
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} VHostVSock;
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#endif /* _QEMU_VHOST_VSOCK_H */
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