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tcm_vhost: Add vhost_scsi_send_bad_target() helper

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Share the send bad target code with other use cases.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Asias He 2013-04-10 15:06:15 +08:00 committed by Nicholas Bellinger
parent 7ea206cf3b
commit 637ab21e28
1 changed files with 18 additions and 13 deletions
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31
drivers/vhost/tcm_vhost.c
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@ -578,6 +578,23 @@ static void tcm_vhost_submission_work(struct work_struct *work)
} }
} }
static void vhost_scsi_send_bad_target(struct vhost_scsi *vs,
struct vhost_virtqueue *vq, int head, unsigned out)
{
struct virtio_scsi_cmd_resp __user *resp;
struct virtio_scsi_cmd_resp rsp;
int ret;
memset(&rsp, 0, sizeof(rsp));
rsp.response = VIRTIO_SCSI_S_BAD_TARGET;
resp = vq->iov[out].iov_base;
ret = __copy_to_user(resp, &rsp, sizeof(rsp));
if (!ret)
vhost_add_used_and_signal(&vs->dev, vq, head, 0);
else
pr_err("Faulted on virtio_scsi_cmd_resp\n");
}
static void vhost_scsi_handle_vq(struct vhost_scsi *vs, static void vhost_scsi_handle_vq(struct vhost_scsi *vs,
struct vhost_virtqueue *vq) struct vhost_virtqueue *vq)
{ {
@ -673,19 +690,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs,
/* Target does not exist, fail the request */ /* Target does not exist, fail the request */
if (unlikely(!tv_tpg)) { if (unlikely(!tv_tpg)) {
struct virtio_scsi_cmd_resp __user *resp; vhost_scsi_send_bad_target(vs, vq, head, out);
struct virtio_scsi_cmd_resp rsp;
memset(&rsp, 0, sizeof(rsp));
rsp.response = VIRTIO_SCSI_S_BAD_TARGET;
resp = vq->iov[out].iov_base;
ret = __copy_to_user(resp, &rsp, sizeof(rsp));
if (!ret)
vhost_add_used_and_signal(&vs->dev,
vq, head, 0);
else
pr_err("Faulted on virtio_scsi_cmd_resp\n");
continue; continue;
} }