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

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

drivers/vhost/vdpa.c

+8 −0
Original line number Original line Diff line number Diff line
@@ -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)

include/uapi/linux/vhost.h

+8 −0
Original line number Original line Diff line number Diff line
@@ -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