Commit 21828e3c authored by James Smart's avatar James Smart Committed by Martin K. Petersen
Browse files

scsi: lpfc: Update congestion mode logging for Emulex SAN Manager application 

If there is a congestion or automated congestion response mode change, then
log the reported change to kmsg.

Link: https://lore.kernel.org/r/20220911221505.117655-8-jsmart2021@gmail.com


Co-developed-by: default avatarJustin Tee <justin.tee@broadcom.com>
Signed-off-by: default avatarJustin Tee <justin.tee@broadcom.com>
Signed-off-by: default avatarJames Smart <jsmart2021@gmail.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 6e5c5d24

drivers/scsi/lpfc/lpfc_init.c

+22 −6
Original line number Diff line number Diff line
@@ -7038,6 +7038,12 @@ lpfc_cgn_params_val(struct lpfc_hba *phba, struct lpfc_cgn_param *p_cfg_param) 
	spin_unlock_irq(&phba->hbalock);

}



static const char * const lpfc_cmf_mode_to_str[] = {

	"OFF",

	"MANAGED",

	"MONITOR",

};



/**

 * lpfc_cgn_params_parse - Process a FW cong parm change event

 * @phba: pointer to lpfc hba data structure.
@@ -7057,6 +7063,7 @@ lpfc_cgn_params_parse(struct lpfc_hba *phba, 
{

	struct lpfc_cgn_info *cp;

	uint32_t crc, oldmode;

	char acr_string[4] = {0};



	/* Make sure the FW has encoded the correct magic number to

	 * validate the congestion parameter in FW memory.
@@ -7133,9 +7140,6 @@ lpfc_cgn_params_parse(struct lpfc_hba *phba, 
					lpfc_issue_els_edc(phba->pport, 0);

				break;

			case LPFC_CFG_MONITOR:

				lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,

						"4661 Switch from MANAGED to "

						"`MONITOR mode\n");

				phba->cmf_max_bytes_per_interval =

					phba->cmf_link_byte_count;
@@ -7154,14 +7158,26 @@ lpfc_cgn_params_parse(struct lpfc_hba *phba, 
					lpfc_issue_els_edc(phba->pport, 0);

				break;

			case LPFC_CFG_MANAGED:

				lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,

						"4662 Switch from MONITOR to "

						"MANAGED mode\n");

				lpfc_cmf_signal_init(phba);

				break;

			}

			break;

		}

		if (oldmode != LPFC_CFG_OFF ||

		    oldmode != phba->cgn_p.cgn_param_mode) {

			if (phba->cgn_p.cgn_param_mode == LPFC_CFG_MANAGED)

				scnprintf(acr_string, sizeof(acr_string), "%u",

					  phba->cgn_p.cgn_param_level0);

			else

				scnprintf(acr_string, sizeof(acr_string), "NA");



			dev_info(&phba->pcidev->dev, "%d: "

				 "4663 CMF: Mode %s acr %s\n",

				 phba->brd_no,

				 lpfc_cmf_mode_to_str

				 [phba->cgn_p.cgn_param_mode],

				 acr_string);

		}

	} else {

		lpfc_printf_log(phba, KERN_ERR, LOG_CGN_MGMT | LOG_INIT,

				"4669 FW cgn parm buf wrong magic 0x%x "