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SubjectRe: [PATCH RFC v2 10/10] vdpa_sim_blk: handle VIRTIO_BLK_T_GET_ID
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On 2021/1/28 下午10:41, Stefano Garzarella wrote:
> Handle VIRTIO_BLK_T_GET_ID request, always answering the
> "vdpa_blk_sim" string.
>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
> v2:
> - made 'vdpasim_blk_id' static [Jason]


Acked-by: Jason Wang <jasowang@redhat.com>


> ---
> drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> index fc47e8320358..a3f8afad8d14 100644
> --- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> @@ -37,6 +37,7 @@
> #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)
> {
> @@ -152,6 +153,20 @@ 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);

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