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scsi: lpfc: Fix counters so outstandng NVME IO count is accurate

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NVME FC counters don't reflect actual results

Since counters are not atomic, or protected by a lock, the values often
get screwed up.

Make them atomic, like NVMET.  Fix up sysfs and debugfs display
accordingly Added Outstanding IOs to stats display

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2017-06-01 21:07:02 -07:00
committed by Martin K. Petersen
parent 14041bd170
commit 2cee780800
6 changed files with 88 additions and 40 deletions
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19
drivers/scsi/lpfc/lpfc_scsi.c
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@@ -3931,7 +3931,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
struct Scsi_Host *shost;
uint32_t logit = LOG_FCP;
phba->fc4ScsiIoCmpls++;
atomic_inc(&phba->fc4ScsiIoCmpls);
/* Sanity check on return of outstanding command */
cmd = lpfc_cmd->pCmd;
@@ -4250,19 +4250,19 @@ lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd,
vport->cfg_first_burst_size;
}
fcp_cmnd->fcpCntl3 = WRITE_DATA;
phba->fc4ScsiOutputRequests++;
atomic_inc(&phba->fc4ScsiOutputRequests);
} else {
iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR;
iocb_cmd->ulpPU = PARM_READ_CHECK;
fcp_cmnd->fcpCntl3 = READ_DATA;
phba->fc4ScsiInputRequests++;
atomic_inc(&phba->fc4ScsiInputRequests);
}
} else {
iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR;
iocb_cmd->un.fcpi.fcpi_parm = 0;
iocb_cmd->ulpPU = 0;
fcp_cmnd->fcpCntl3 = 0;
phba->fc4ScsiControlRequests++;
atomic_inc(&phba->fc4ScsiControlRequests);
}
if (phba->sli_rev == 3 &&
!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))
@@ -4640,7 +4640,16 @@ lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd)
(uint32_t)
(cmnd->request->timeout / 1000));
switch (lpfc_cmd->fcp_cmnd->fcpCntl3) {
case WRITE_DATA:
atomic_dec(&phba->fc4ScsiOutputRequests);
break;
case READ_DATA:
atomic_dec(&phba->fc4ScsiInputRequests);
break;
default:
atomic_dec(&phba->fc4ScsiControlRequests);
}
goto out_host_busy_free_buf;
}
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {