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scsi: lpfc: SLI path split: Refactor BSG paths 

This patch refactors the BSG paths to use SLI-4 as the primary interface.

 - Conversion away from using SLI-3 iocb structures to set/access fields in
   common routines. Use the new generic get/set routines that were added.
   This move changes code from indirect structure references to using local
   variables with the generic routines.

 - Refactor routines when setting non-generic fields, to have both SLI3 and
   SLI4 specific sections. This replaces the set-as-SLI3 then translate to
   SLI4 behavior of the past.

Link: https://lore.kernel.org/r/20220225022308.16486-16-jsmart2021@gmail.com
Co-developed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart 2022-02-24 18:23:06 -08:00 committed by Martin K. Petersen
parent 31a59f7570
commit 0e082d926f
1 changed files with 22 additions and 14 deletions
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36
drivers/scsi/lpfc/lpfc_bsg.c
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@ -564,7 +564,6 @@ lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
struct bsg_job_data *dd_data;
struct bsg_job *job;
struct fc_bsg_reply *bsg_reply;
IOCB_t *rsp;
struct lpfc_nodelist *ndlp;
struct lpfc_dmabuf *pcmd = NULL, *prsp = NULL;
struct fc_bsg_ctels_reply *els_reply;
@ -572,6 +571,7 @@ lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
unsigned long flags;
unsigned int rsp_size;
int rc = 0;
u32 ulp_status, ulp_word4, total_data_placed;
dd_data = cmdiocbq->context1;
ndlp = dd_data->context_un.iocb.ndlp;
@ -592,7 +592,9 @@ lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
cmdiocbq->cmd_flag &= ~LPFC_IO_CMD_OUTSTANDING;
spin_unlock_irqrestore(&phba->hbalock, flags);
rsp = &rspiocbq->iocb;
ulp_status = get_job_ulpstatus(phba, rspiocbq);
ulp_word4 = get_job_word4(phba, rspiocbq);
total_data_placed = get_job_data_placed(phba, rspiocbq);
pcmd = (struct lpfc_dmabuf *)cmdiocbq->context2;
prsp = (struct lpfc_dmabuf *)pcmd->list.next;
@ -601,24 +603,28 @@ lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
*/
if (job) {
if (rsp->ulpStatus == IOSTAT_SUCCESS) {
rsp_size = rsp->un.elsreq64.bdl.bdeSize;
if (ulp_status == IOSTAT_SUCCESS) {
rsp_size = total_data_placed;
bsg_reply->reply_payload_rcv_len =
sg_copy_from_buffer(job->reply_payload.sg_list,
job->reply_payload.sg_cnt,
prsp->virt,
rsp_size);
} else if (rsp->ulpStatus == IOSTAT_LS_RJT) {
} else if (ulp_status == IOSTAT_LS_RJT) {
bsg_reply->reply_payload_rcv_len =
sizeof(struct fc_bsg_ctels_reply);
/* LS_RJT data returned in word 4 */
rjt_data = (uint8_t *)&rsp->un.ulpWord[4];
rjt_data = (uint8_t *)&ulp_word4;
els_reply = &bsg_reply->reply_data.ctels_reply;
els_reply->status = FC_CTELS_STATUS_REJECT;
els_reply->rjt_data.action = rjt_data[3];
els_reply->rjt_data.reason_code = rjt_data[2];
els_reply->rjt_data.reason_explanation = rjt_data[1];
els_reply->rjt_data.vendor_unique = rjt_data[0];
} else if (ulp_status == IOSTAT_LOCAL_REJECT &&
(ulp_word4 & IOERR_PARAM_MASK) ==
IOERR_SEQUENCE_TIMEOUT) {
rc = -ETIMEDOUT;
} else {
rc = -EIO;
}
@ -695,7 +701,6 @@ lpfc_bsg_rport_els(struct bsg_job *job)
* we won't be dma into memory that is no longer allocated to for the
* request.
*/
cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
ndlp->nlp_DID, elscmd);
if (!cmdiocbq) {
@ -707,12 +712,13 @@ lpfc_bsg_rport_els(struct bsg_job *job)
sg_copy_to_buffer(job->request_payload.sg_list,
job->request_payload.sg_cnt,
((struct lpfc_dmabuf *)cmdiocbq->context2)->virt,
cmdsize);
job->request_payload.payload_len);
rpi = ndlp->nlp_rpi;
if (phba->sli_rev == LPFC_SLI_REV4)
cmdiocbq->iocb.ulpContext = phba->sli4_hba.rpi_ids[rpi];
bf_set(wqe_ctxt_tag, &cmdiocbq->wqe.generic.wqe_com,
phba->sli4_hba.rpi_ids[rpi]);
else
cmdiocbq->iocb.ulpContext = rpi;
cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC;
@ -1372,11 +1378,11 @@ lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
struct bsg_job_data *dd_data;
struct bsg_job *job;
struct fc_bsg_reply *bsg_reply;
IOCB_t *rsp;
struct lpfc_dmabuf *bmp, *cmp;
struct lpfc_nodelist *ndlp;
unsigned long flags;
int rc = 0;
u32 ulp_status, ulp_word4;
dd_data = cmdiocbq->context1;
@ -1397,15 +1403,17 @@ lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
ndlp = dd_data->context_un.iocb.ndlp;
cmp = cmdiocbq->context2;
bmp = cmdiocbq->context3;
rsp = &rspiocbq->iocb;
ulp_status = get_job_ulpstatus(phba, rspiocbq);
ulp_word4 = get_job_word4(phba, rspiocbq);
/* Copy the completed job data or set the error status */
if (job) {
bsg_reply = job->reply;
if (rsp->ulpStatus) {
if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
switch (rsp->un.ulpWord[4] & IOERR_PARAM_MASK) {
if (ulp_status) {
if (ulp_status == IOSTAT_LOCAL_REJECT) {
switch (ulp_word4 & IOERR_PARAM_MASK) {
case IOERR_SEQUENCE_TIMEOUT:
rc = -ETIMEDOUT;
break;