diff options
| author | Yuanhan Liu <yuanhan.liu@linux.intel.com> | 2015-09-23 12:19:59 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-09-24 16:27:53 +0300 |
| commit | fc57fd9900dc6344b8833e7641f63cddc6840301 (patch) | |
| tree | f5ab31f5309c8b23b38cdc6c63020c8ba3f8646f /hw/virtio/vhost-backend.c | |
| parent | e2051e9e004649b53af4db34f78c689fb44e075b (diff) | |
| download | qemu-fc57fd9900dc6344b8833e7641f63cddc6840301.tar.gz | |
vhost: introduce vhost_backend_get_vq_index method
Minusing the idx with the base(dev->vq_index) for vhost-kernel, and
then adding it back for vhost-user doesn't seem right. Here introduces
a new method vhost_backend_get_vq_index() for getting the right vq
index for following vhost messages calls.
Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Diffstat (limited to 'hw/virtio/vhost-backend.c')
| -rw-r--r-- | hw/virtio/vhost-backend.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/hw/virtio/vhost-backend.c b/hw/virtio/vhost-backend.c index 4d68a27658..72d1392b35 100644 --- a/hw/virtio/vhost-backend.c +++ b/hw/virtio/vhost-backend.c @@ -42,11 +42,19 @@ static int vhost_kernel_cleanup(struct vhost_dev *dev) return close(fd); } +static int vhost_kernel_get_vq_index(struct vhost_dev *dev, int idx) +{ + assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs); + + return idx - dev->vq_index; +} + static const VhostOps kernel_ops = { .backend_type = VHOST_BACKEND_TYPE_KERNEL, .vhost_call = vhost_kernel_call, .vhost_backend_init = vhost_kernel_init, - .vhost_backend_cleanup = vhost_kernel_cleanup + .vhost_backend_cleanup = vhost_kernel_cleanup, + .vhost_backend_get_vq_index = vhost_kernel_get_vq_index, }; int vhost_set_backend_type(struct vhost_dev *dev, VhostBackendType backend_type) |