On Tue, Jan 06, 2015 at 08:18:05PM +0000, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
>
> While looking at hch's recent conversion to drop the MSG_*_TAG
> definitions, I noticed a long standing bug in vhost-scsi where
> the VIRTIO_SCSI_S_* attribute definitions where incorrectly
> being passed directly into target_submit_cmd_map_sgls().
>
> This patch adds the missing virtio-scsi to TCM/SAM task attribute
> conversion.
>
> Cc: Christoph Hellwig <hch@xxxxxx>
> Cc: Michael S. Tsirkin <mst@xxxxxxxxxx>
> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Cc stable as well?
> ---
> drivers/vhost/scsi.c | 24 +++++++++++++++++++++---
> 1 file changed, 21 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
> index 01c01cb..d695b16 100644
> --- a/drivers/vhost/scsi.c
> +++ b/drivers/vhost/scsi.c
> @@ -911,6 +911,23 @@ vhost_scsi_map_iov_to_prot(struct tcm_vhost_cmd *cmd,
> return 0;
> }
>
> +static int vhost_scsi_to_tcm_attr(int attr)
> +{
> + switch (attr) {
> + case VIRTIO_SCSI_S_SIMPLE:
> + return TCM_SIMPLE_TAG;
> + case VIRTIO_SCSI_S_ORDERED:
> + return TCM_ORDERED_TAG;
> + case VIRTIO_SCSI_S_HEAD:
> + return TCM_HEAD_TAG;
> + case VIRTIO_SCSI_S_ACA:
> + return TCM_ACA_TAG;
> + default:
> + break;
> + }
> + return TCM_SIMPLE_TAG;
> +}
> +
> static void tcm_vhost_submission_work(struct work_struct *work)
> {
> struct tcm_vhost_cmd *cmd =
> @@ -936,9 +953,10 @@ static void tcm_vhost_submission_work(struct work_struct *work)
> rc = target_submit_cmd_map_sgls(se_cmd, tv_nexus->tvn_se_sess,
> cmd->tvc_cdb, &cmd->tvc_sense_buf[0],
> cmd->tvc_lun, cmd->tvc_exp_data_len,
> - cmd->tvc_task_attr, cmd->tvc_data_direction,
> - TARGET_SCF_ACK_KREF, sg_ptr, cmd->tvc_sgl_count,
> - NULL, 0, sg_prot_ptr, cmd->tvc_prot_sgl_count);
> + vhost_scsi_to_tcm_attr(cmd->tvc_task_attr),
> + cmd->tvc_data_direction, TARGET_SCF_ACK_KREF,
> + sg_ptr, cmd->tvc_sgl_count, NULL, 0, sg_prot_ptr,
> + cmd->tvc_prot_sgl_count);
> if (rc < 0) {
> transport_send_check_condition_and_sense(se_cmd,
> TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
> --
> 1.9.1
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