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authorAsias He <asias@redhat.com>2013-04-10 15:06:15 +0800
committerNicholas Bellinger <nab@linux-iscsi.org>2013-04-11 01:48:35 -0700
commit637ab21e284f4e9188acc2746695f7f6452b4a22 (patch)
treea2462717d475c5fac98b4ba0adea38297c30e9d4 /drivers/vhost
parent7ea206cf3b06704cf2bfc9c9c395094b24dc44a2 (diff)
downloadlinux-637ab21e284f4e9188acc2746695f7f6452b4a22.tar.bz2
tcm_vhost: Add vhost_scsi_send_bad_target() helper
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>
Diffstat (limited to 'drivers/vhost')
-rw-r--r--drivers/vhost/tcm_vhost.c31
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 210d59e222fc..1bb0fb4950d1 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -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,
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 */
if (unlikely(!tv_tpg)) {
- struct virtio_scsi_cmd_resp __user *resp;
- 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");
-
+ vhost_scsi_send_bad_target(vs, vq, head, out);
continue;
}