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scsi: lpfc: Validate adapter support for SRIU option

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When using the special option to suppress the response iu, ensure the
adapter fully supports the feature by checking feature flags from the
adapter and validating the support when formatting the WQE.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2018-01-30 15:58:58 -08:00
committed by Martin K. Petersen
parent c1dd9111b7
commit 20aefac3a9
3 changed files with 19 additions and 4 deletions
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13
drivers/scsi/lpfc/lpfc_init.c
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@@ -10473,8 +10473,19 @@ lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
}
if (bf_get(cfg_xib, mbx_sli4_parameters) && phba->cfg_suppress_rsp)
/*
* To support Suppress Response feature we must satisfy 3 conditions.
* lpfc_suppress_rsp module parameter must be set (default).
* In SLI4-Parameters Descriptor:
* Extended Inline Buffers (XIB) must be supported.
* Suppress Response IU Not Supported (SRIUNS) must NOT be supported
* (double negative).
*/
if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
!(bf_get(cfg_nosr, mbx_sli4_parameters)))
phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
else
phba->cfg_suppress_rsp = 0;
if (bf_get(cfg_eqdr, mbx_sli4_parameters))
phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;