leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

scsi: lpfc: Validate adapter support for SRIU option

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/scsi/lpfc/lpfc_hw4.h
View File

@ -3293,6 +3293,9 @@ struct lpfc_sli4_parameters {
#define cfg_eqdr_SHIFT 8
#define cfg_eqdr_MASK 0x00000001
#define cfg_eqdr_WORD word19
#define cfg_nosr_SHIFT 9
#define cfg_nosr_MASK 0x00000001
#define cfg_nosr_WORD word19
#define LPFC_NODELAY_MAX_IO 32
};

13
drivers/scsi/lpfc/lpfc_init.c
View File

@ -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;

7
drivers/scsi/lpfc/lpfc_nvmet.c
View File

@ -2290,9 +2290,10 @@ lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
if (rsp->op == NVMET_FCOP_READDATA_RSP) {
atomic_inc(&tgtp->xmt_fcp_read_rsp);
bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1);
if ((ndlp->nlp_flag & NLP_SUPPRESS_RSP) &&
(rsp->rsplen == 12)) {
bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 1);
if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
if (ndlp->nlp_flag & NLP_SUPPRESS_RSP)
bf_set(wqe_sup,
&wqe->fcp_tsend.wqe_com, 1);
bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);