diff mbox series

[3/5] lpfc: Log when congestion management limits are in effect

Message ID 20221017164323.14536-3-justintee8345@gmail.com (mailing list archive)
State Accepted
Headers show
Series [1/5] lpfc: Set sli4_param's cmf option to zero when CMF is turned off | expand

Commit Message

Justin Tee Oct. 17, 2022, 4:43 p.m. UTC 
When bandwidth reduces from or recovers back to 100% due to congestion
management, log the event.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
---
 drivers/scsi/lpfc/lpfc_sli.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 86ba45ac91c8..d25afc9dde14 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -1848,6 +1848,18 @@  lpfc_cmf_sync_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
 				  phba->cmf_link_byte_count);
 		bwpcent = div64_u64(bw * 100 + slop,
 				    phba->cmf_link_byte_count);
+
+		if (phba->cmf_max_bytes_per_interval < bw &&
+		    bwpcent > 95)
+			lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+					"6208 Congestion bandwidth "
+					"limits removed\n");
+		else if ((phba->cmf_max_bytes_per_interval > bw) &&
+			 ((bwpcent + pcent) <= 100) && ((bwpcent + pcent) > 95))
+			lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
+					"6209 Congestion bandwidth "
+					"limits in effect\n");
+
 		if (asig) {
 			lpfc_printf_log(phba, KERN_INFO, LOG_CGN_MGMT,
 					"6237 BW Threshold %lld%% (%lld): "