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scsi: lpfc: Modify CGN warning signal calculation based on EDC response

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CGN warning signals are currently statically fixed to a passed in driver
parameter called lpfc_fabric_cgn_frequency.  However, CGN frequency
should be more correctly based on EDC responses from the fabric when
available.  Otherwise, still allow the driver to fall back on user
configured lpfc_fabric_cgn_frequency driver parameter.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20241031223219.152342-2-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Justin Tee 2024-10-31 15:32:09 -07:00 committed by Martin K. Petersen
parent 9852d85ec9
commit 29a64210c7
1 changed files with 4 additions and 2 deletions
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6
drivers/scsi/lpfc/lpfc_sli.c
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@ -1932,7 +1932,7 @@ lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)
union lpfc_wqe128 *wqe;
struct lpfc_iocbq *sync_buf;
unsigned long iflags;
u32 ret_val;
u32 ret_val, cgn_sig_freq;
u32 atot, wtot, max;
u8 warn_sync_period = 0;
@ -1987,8 +1987,10 @@ lpfc_issue_cmf_sync_wqe(struct lpfc_hba *phba, u32 ms, u64 total)
} else if (wtot) {
if (phba->cgn_reg_signal == EDC_CG_SIG_WARN_ONLY ||
phba->cgn_reg_signal == EDC_CG_SIG_WARN_ALARM) {
cgn_sig_freq = phba->cgn_sig_freq ? phba->cgn_sig_freq :
lpfc_fabric_cgn_frequency;
/* We hit an Signal warning condition */
max = LPFC_SEC_TO_MSEC / lpfc_fabric_cgn_frequency *
max = LPFC_SEC_TO_MSEC / cgn_sig_freq *
lpfc_acqe_cgn_frequency;
bf_set(cmf_sync_wsigmax, &wqe->cmf_sync, max);
bf_set(cmf_sync_wsigcnt, &wqe->cmf_sync, wtot);