On 02/16/2016 01:22 PM, John Garry wrote:
> When TRANS_TX_ERR_FRAME_TXED error occurs for
> a command, the command should be re-attempted.
>
> Signed-off-by: John Garry <john.ga...@huawei.com>
> ---
> drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 19 +++++++++++++++++--
> 1 file changed, 17 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
> b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
> index 58e1956..2bf93079b 100644
> --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
> +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
> @@ -1190,7 +1190,8 @@ static void sata_done_v2_hw(struct hisi_hba *hisi_hba,
> struct sas_task *task,
> /* by default, task resp is complete */
> static void slot_err_v2_hw(struct hisi_hba *hisi_hba,
> struct sas_task *task,
> - struct hisi_sas_slot *slot)
> + struct hisi_sas_slot *slot,
> + int *abort_slot)
> {
> struct task_status_struct *ts = &task->task_status;
> struct hisi_sas_err_record_v2 *err_record = slot->status_buffer;
> @@ -1299,6 +1300,13 @@ static void slot_err_v2_hw(struct hisi_hba *hisi_hba,
> ts->stat = SAS_DATA_UNDERRUN;
> break;
> }
> + case TRANS_TX_ERR_FRAME_TXED:
> + {
> + /* This will request a retry */
> + ts->stat = SAS_QUEUE_FULL;
> + ++(*abort_slot);
> + break;
> + }
> case TRANS_TX_OPEN_FAIL_WITH_IT_NEXUS_LOSS:
> case TRANS_TX_ERR_PHY_NOT_ENABLE:
> case TRANS_TX_OPEN_CNX_ERR_BY_OTHER:
> @@ -1491,11 +1499,17 @@ slot_complete_v2_hw(struct hisi_hba *hisi_hba, struct
> hisi_sas_slot *slot,
>
> if ((complete_hdr->dw0 & CMPLT_HDR_ERX_MSK) &&
> (!(complete_hdr->dw0 & CMPLT_HDR_RSPNS_XFRD_MSK))) {
> + int abort_slot = 0;
> dev_dbg(dev, "%s slot %d has error info 0x%x\n",
> __func__, slot->cmplt_queue_slot,
> complete_hdr->dw0 & CMPLT_HDR_ERX_MSK);
>
> - slot_err_v2_hw(hisi_hba, task, slot);
> + slot_err_v2_hw(hisi_hba, task, slot, &abort_slot);
> + if (unlikely(abort_slot)) {
> + queue_work(hisi_hba->wq, &slot->abort_slot);
> + sts = ts->stat;
> + goto out_1;
> + }
> goto out;
> }
>
Again this weird 'abort_slot' pointer reshuffling.
Care to clarify?
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
h...@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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