From: Justin Tee Date: Mon, 17 Oct 2022 16:43:21 +0000 (-0700) Subject: scsi: lpfc: Log when congestion management limits are in effect X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=eaf660e4282ba11239704b2b89ae94feae2010e0;p=linux.git scsi: lpfc: Log when congestion management limits are in effect When bandwidth reduces from or recovers back to 100% due to congestion management, log the event. Signed-off-by: Justin Tee Link: https://lore.kernel.org/r/20221017164323.14536-3-justintee8345@gmail.com Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 86ba45ac91c82..d25afc9dde142 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): "