On Thu, 2014-10-02 at 09:30 +0200, Hannes Reinecke wrote:
> The SCSI command tag is set to the tag assigned from the block
> layer, not the SCSI-II tag message. So we need to convert
> it into the correct SCSI-II tag message based on the
> device flags, not the tag value itself.
>
> Signed-off-by: Hannes Reinecke <h...@suse.de>
> ---
> drivers/target/loopback/tcm_loop.c | 23 ++++++++---------------
> 1 file changed, 8 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/target/loopback/tcm_loop.c
> b/drivers/target/loopback/tcm_loop.c
> index 340de9d..c2a9370 100644
> --- a/drivers/target/loopback/tcm_loop.c
> +++ b/drivers/target/loopback/tcm_loop.c
> @@ -153,18 +153,11 @@ static int tcm_loop_change_queue_type(struct
> scsi_device *sdev, int tag)
> /*
> * Locate the SAM Task Attr from struct scsi_cmnd *
> */
> -static int tcm_loop_sam_attr(struct scsi_cmnd *sc)
> -{
> - if (sc->device->tagged_supported) {
> - switch (sc->tag) {
> - case HEAD_OF_QUEUE_TAG:
> - return MSG_HEAD_TAG;
> - case ORDERED_QUEUE_TAG:
> - return MSG_ORDERED_TAG;
> - default:
> - break;
> - }
> - }
> +static int tcm_loop_sam_attr(struct scsi_cmnd *sc, int tag)
> +{
> + if (sc->device->tagged_supported &&
> + sc->device->ordered_tags && tag >= 0)
> + return MSG_ORDERED_TAG;
>
> return MSG_SIMPLE_TAG;
> }
> @@ -227,7 +220,7 @@ static void tcm_loop_submission_work(struct work_struct
> *work)
>
> rc = target_submit_cmd_map_sgls(se_cmd, tl_nexus->se_sess, sc->cmnd,
> &tl_cmd->tl_sense_buf[0], tl_cmd->sc->device->lun,
> - transfer_length, tcm_loop_sam_attr(sc),
> + transfer_length, tcm_loop_sam_attr(sc,
> tl_cmd->sc_cmd_tag),
> sc->sc_data_direction, 0,
> scsi_sglist(sc), scsi_sg_count(sc),
> sgl_bidi, sgl_bidi_count,
> @@ -266,7 +259,7 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh,
> struct scsi_cmnd *sc)
> }
>
> tl_cmd->sc = sc;
> - tl_cmd->sc_cmd_tag = sc->tag;
> + tl_cmd->sc_cmd_tag = sc->request->tag;
> INIT_WORK(&tl_cmd->work, tcm_loop_submission_work);
> queue_work(tcm_loop_workqueue, &tl_cmd->work);
> return 0;
> @@ -370,7 +363,7 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc)
> */
> tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
> ret = tcm_loop_issue_tmr(tl_tpg, tl_nexus, sc->device->lun,
> - sc->tag, TMR_ABORT_TASK);
> + sc->request->tag, TMR_ABORT_TASK);
> return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
> }
>
Applied. Thanks Hannes!
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