Re: [PATCH RFC v2 10/10] vdpa_sim_blk: handle VIRTIO_BLK_T_GET_ID
From: Jason Wang <jasowang@redhat.com>
Date: 2021-02-01 06:34:36
Also in:
kvm, lkml
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>
quoted hunk ↗ jump to hunk
--- 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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