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scsi: lpfc: Ensure io aborts interlocked with the target.

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Before releasing nvme io back to the io stack for possible retry on
other paths, ensure the io termination is interlocked with the target
device by ensuring the entire ABTS-LS protocol is complete.

Additionally, FC-NVME ABTS-LS protocol does not use RRQ. Remove RRQ
behavior from ABTS-LS.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dick Kennedy 2017-09-29 17:34:43 -07:00 committed by Martin K. Petersen
parent 184fc2b9a8
commit 952c303b32
1 changed files with 33 additions and 24 deletions
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57
drivers/scsi/lpfc/lpfc_nvme.c
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@ -850,7 +850,7 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
} else {
lpfc_ncmd->status = (bf_get(lpfc_wcqe_c_status, wcqe) &
LPFC_IOCB_STATUS_MASK);
lpfc_ncmd->result = wcqe->parameter;
lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK);
/* For NVME, the only failure path that results in an
* IO error is when the adapter rejects it. All other
@ -884,6 +884,17 @@ lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
lpfc_ncmd->status, lpfc_ncmd->result,
wcqe->total_data_placed);
break;
case IOSTAT_LOCAL_REJECT:
/* Let fall through to set command final state. */
if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED)
lpfc_printf_vlog(vport, KERN_INFO,
LOG_NVME_IOERR,
"6032 Delay Aborted cmd %p "
"nvme cmd %p, xri x%x, "
"xb %d\n",
lpfc_ncmd, nCmd,
lpfc_ncmd->cur_iocbq.sli4_xritag,
bf_get(lpfc_wcqe_c_xb, wcqe));
default:
out_err:
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
@ -930,12 +941,18 @@ out_err:
#endif
freqpriv = nCmd->private;
freqpriv->nvme_buf = NULL;
nCmd->done(nCmd);
/* NVME targets need completion held off until the abort exchange
* completes.
*/
if (!lpfc_ncmd->flags & LPFC_SBUF_XBUSY)
nCmd->done(nCmd);
spin_lock_irqsave(&phba->hbalock, flags);
lpfc_ncmd->nrport = NULL;
spin_unlock_irqrestore(&phba->hbalock, flags);
/* Call release with XB=1 to queue the IO into the abort list. */
lpfc_release_nvme_buf(phba, lpfc_ncmd);
}
@ -2063,9 +2080,6 @@ lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
spin_lock_irqsave(&phba->nvme_buf_list_get_lock, iflag);
list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
&phba->lpfc_nvme_buf_list_get, list) {
if (lpfc_test_rrq_active(phba, ndlp,
lpfc_ncmd->cur_iocbq.sli4_lxritag))
continue;
list_del_init(&lpfc_ncmd->list);
found = 1;
break;
@ -2078,9 +2092,6 @@ lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
spin_unlock(&phba->nvme_buf_list_put_lock);
list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
&phba->lpfc_nvme_buf_list_get, list) {
if (lpfc_test_rrq_active(
phba, ndlp, lpfc_ncmd->cur_iocbq.sli4_lxritag))
continue;
list_del_init(&lpfc_ncmd->list);
found = 1;
break;
@ -2117,7 +2128,6 @@ lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd)
spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock,
iflag);
lpfc_ncmd->nvmeCmd = NULL;
list_add_tail(&lpfc_ncmd->list,
&phba->sli4_hba.lpfc_abts_nvme_buf_list);
spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock,
@ -2485,18 +2495,18 @@ lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
* @axri: pointer to the fcp xri abort wcqe structure.
*
* This routine is invoked by the worker thread to process a SLI4 fast-path
* FCP aborted xri.
* NVME aborted xri. Aborted NVME IO commands are completed to the transport
* here.
**/
void
lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba,
struct sli4_wcqe_xri_aborted *axri)
{
uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
struct lpfc_nvme_buf *lpfc_ncmd, *next_lpfc_ncmd;
struct nvmefc_fcp_req *nvme_cmd = NULL;
struct lpfc_nodelist *ndlp;
unsigned long iflag = 0;
int rrq_empty = 0;
if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
return;
@ -2512,25 +2522,24 @@ lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba,
spin_unlock(
&phba->sli4_hba.abts_nvme_buf_list_lock);
rrq_empty = list_empty(&phba->active_rrq_list);
spin_unlock_irqrestore(&phba->hbalock, iflag);
ndlp = lpfc_ncmd->ndlp;
if (ndlp) {
lpfc_set_rrq_active(
phba, ndlp,
lpfc_ncmd->cur_iocbq.sli4_lxritag,
rxid, 1);
if (ndlp)
lpfc_sli4_abts_err_handler(phba, ndlp, axri);
}
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
"6311 XRI Aborted xri x%x tag x%x "
"released\n",
xri, lpfc_ncmd->cur_iocbq.iotag);
"6311 nvme_cmd %p xri x%x tag x%x "
"abort complete and xri released\n",
lpfc_ncmd->nvmeCmd, xri,
lpfc_ncmd->cur_iocbq.iotag);
/* Aborted NVME commands are required to not complete
* before the abort exchange command fully completes.
* Once completed, it is available via the put list.
*/
nvme_cmd = lpfc_ncmd->nvmeCmd;
nvme_cmd->done(nvme_cmd);
lpfc_release_nvme_buf(phba, lpfc_ncmd);
if (rrq_empty)
lpfc_worker_wake_up(phba);
return;
}
}