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vdpa_sim_blk: handle VIRTIO_BLK_T_GET_ID

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Handle VIRTIO_BLK_T_GET_ID request, always answering the
"vdpa_blk_sim" string.

Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210315163450.254396-14-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefano Garzarella 2021-03-15 17:34:49 +01:00 committed by Michael S. Tsirkin
parent 7d189f617f
commit e6fa605227
1 changed files with 15 additions and 0 deletions
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15
drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
View File

@ -38,6 +38,7 @@
#define VDPASIM_BLK_VQ_NUM 1
static struct vdpasim *vdpasim_blk_dev;
static char vdpasim_blk_id[VIRTIO_BLK_ID_BYTES] = "vdpa_blk_sim";
static bool vdpasim_blk_check_range(u64 start_sector, size_t range_size)
{
@ -153,6 +154,20 @@ static bool vdpasim_blk_handle_req(struct vdpasim *vdpasim,
}
break;
case VIRTIO_BLK_T_GET_ID:
bytes = vringh_iov_push_iotlb(&vq->vring, &vq->in_iov,
vdpasim_blk_id,
VIRTIO_BLK_ID_BYTES);
if (bytes < 0) {
dev_err(&vdpasim->vdpa.dev,
"vringh_iov_push_iotlb() error: %zd\n", bytes);
status = VIRTIO_BLK_S_IOERR;
break;
}
pushed += bytes;
break;
default:
dev_warn(&vdpasim->vdpa.dev,
"Unsupported request type %d\n", type);