Commit 2d1fcb77 authored by Gautam Dawar's avatar Gautam Dawar Committed by Michael S. Tsirkin

vhost-vdpa: uAPI to get virtqueue group id

Follows the support for virtqueue group in vDPA. This patches
introduces uAPI to get the virtqueue group ID for a specific virtqueue
in vhost-vdpa.
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarGautam Dawar <gdawar@xilinx.com>
Message-Id: <20220330180436.24644-14-gdawar@xilinx.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent a0c95f20
...@@ -465,6 +465,14 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd, ...@@ -465,6 +465,14 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, unsigned int cmd,
return -EFAULT; return -EFAULT;
ops->set_vq_ready(vdpa, idx, s.num); ops->set_vq_ready(vdpa, idx, s.num);
return 0; return 0;
case VHOST_VDPA_GET_VRING_GROUP:
s.index = idx;
s.num = ops->get_vq_group(vdpa, idx);
if (s.num >= vdpa->ngroups)
return -EIO;
else if (copy_to_user(argp, &s, sizeof(s)))
return -EFAULT;
return 0;
case VHOST_GET_VRING_BASE: case VHOST_GET_VRING_BASE:
r = ops->get_vq_state(v->vdpa, idx, &vq_state); r = ops->get_vq_state(v->vdpa, idx, &vq_state);
if (r) if (r)
......
...@@ -156,4 +156,12 @@ ...@@ -156,4 +156,12 @@
/* Get the number of address spaces. */ /* Get the number of address spaces. */
#define VHOST_VDPA_GET_AS_NUM _IOR(VHOST_VIRTIO, 0x7A, unsigned int) #define VHOST_VDPA_GET_AS_NUM _IOR(VHOST_VIRTIO, 0x7A, unsigned int)
/* Get the group for a virtqueue: read index, write group in num,
* The virtqueue index is stored in the index field of
* vhost_vring_state. The group for this specific virtqueue is
* returned via num field of vhost_vring_state.
*/
#define VHOST_VDPA_GET_VRING_GROUP _IOWR(VHOST_VIRTIO, 0x7B, \
struct vhost_vring_state)
#endif #endif
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