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scsi: lpfc: Clean up SLI-4 CQE status handling

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There is mishandling of SLI-4 CQE status values larger than what is allowed
by the LPFC_IOCB_STATUS_MASK of 4 bits.  The LPFC_IOCB_STATUS_MASK is a
leftover SLI-3 construct and serves no purpose in SLI-4 path.

Remove the LPFC_IOCB_STATUS_MASK and clean up general CQE status handling
in SLI-4 completion paths.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20230523183206.7728-7-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Justin Tee 2023-05-23 11:32:03 -07:00 committed by Martin K. Petersen
parent b9951e1cff
commit 6a84d01508
5 changed files with 41 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/lpfc/lpfc.h
View File

@ -932,8 +932,6 @@ struct lpfc_hba {
void (*__lpfc_sli_release_iocbq)(struct lpfc_hba *,
struct lpfc_iocbq *);
int (*lpfc_hba_down_post)(struct lpfc_hba *phba);
void (*lpfc_scsi_cmd_iocb_cmpl)
(struct lpfc_hba *, struct lpfc_iocbq *, struct lpfc_iocbq *);
/* MBOX interface function jump table entries */
int (*lpfc_sli_issue_mbox)

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

@ -395,9 +395,6 @@ struct lpfc_cqe {
#define CQE_STATUS_NEED_BUFF_ENTRY 0xf
#define CQE_STATUS_DI_ERROR 0x16
/* Used when mapping CQE status to IOCB */
#define LPFC_IOCB_STATUS_MASK 0xf
/* Status returned by hardware (valid only if status = CQE_STATUS_SUCCESS). */
#define CQE_HW_STATUS_NO_ERR 0x0
#define CQE_HW_STATUS_UNDERRUN 0x1

17
drivers/scsi/lpfc/lpfc_nvme.c
View File

@ -310,20 +310,20 @@ lpfc_nvme_handle_lsreq(struct lpfc_hba *phba,
* for the LS request.
**/
void
__lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport,
__lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport,
struct lpfc_iocbq *cmdwqe,
struct lpfc_wcqe_complete *wcqe)
{
struct nvmefc_ls_req *pnvme_lsreq;
struct lpfc_dmabuf *buf_ptr;
struct lpfc_nodelist *ndlp;
uint32_t status;
int status;
pnvme_lsreq = cmdwqe->context_un.nvme_lsreq;
ndlp = cmdwqe->ndlp;
buf_ptr = cmdwqe->bpl_dmabuf;
status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
status = bf_get(lpfc_wcqe_c_status, wcqe);
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC,
"6047 NVMEx LS REQ x%px cmpl DID %x Xri: %x "
@ -343,14 +343,17 @@ __lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport,
kfree(buf_ptr);
cmdwqe->bpl_dmabuf = NULL;
}
if (pnvme_lsreq->done)
if (pnvme_lsreq->done) {
if (status != CQE_STATUS_SUCCESS)
status = -ENXIO;
pnvme_lsreq->done(pnvme_lsreq, status);
else
} else {
lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT,
"6046 NVMEx cmpl without done call back? "
"Data x%px DID %x Xri: %x status %x\n",
pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0,
cmdwqe->sli4_xritag, status);
}
if (ndlp) {
lpfc_nlp_put(ndlp);
cmdwqe->ndlp = NULL;
@ -367,7 +370,7 @@ lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
uint32_t status;
struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
status = bf_get(lpfc_wcqe_c_status, wcqe);
if (vport->localport) {
lport = (struct lpfc_nvme_lport *)vport->localport->private;
@ -1040,7 +1043,7 @@ lpfc_nvme_io_cmd_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN;
nCmd->transferred_length = nCmd->payload_length;
} else {
lpfc_ncmd->status = (status & LPFC_IOCB_STATUS_MASK);
lpfc_ncmd->status = status;
lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK);
/* For NVME, the only failure path that results in an

4
drivers/scsi/lpfc/lpfc_nvmet.c
View File

@ -300,7 +300,7 @@ __lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
struct nvmefc_ls_rsp *ls_rsp = &axchg->ls_rsp;
uint32_t status, result;
status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
status = bf_get(lpfc_wcqe_c_status, wcqe);
result = wcqe->parameter;
if (axchg->state != LPFC_NVME_STE_LS_RSP || axchg->entry_cnt != 2) {
@ -350,7 +350,7 @@ lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
if (!phba->targetport)
goto finish;
status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
status = bf_get(lpfc_wcqe_c_status, wcqe);
result = wcqe->parameter;
tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;

65
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -4026,7 +4026,7 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
struct lpfc_fast_path_event *fast_path_evt;
struct Scsi_Host *shost;
u32 logit = LOG_FCP;
u32 status, idx;
u32 idx;
u32 lat;
u8 wait_xb_clr = 0;
@ -4061,8 +4061,7 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
#endif
shost = cmd->device->host;
status = bf_get(lpfc_wcqe_c_status, wcqe);
lpfc_cmd->status = (status & LPFC_IOCB_STATUS_MASK);
lpfc_cmd->status = bf_get(lpfc_wcqe_c_status, wcqe);
lpfc_cmd->result = (wcqe->parameter & IOERR_PARAM_MASK);
lpfc_cmd->flags &= ~LPFC_SBUF_XBUSY;
@ -4104,11 +4103,6 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
}
#endif
if (unlikely(lpfc_cmd->status)) {
if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT &&
(lpfc_cmd->result & IOERR_DRVR_MASK))
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
else if (lpfc_cmd->status >= IOSTAT_CNT)
lpfc_cmd->status = IOSTAT_DEFAULT;
if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR &&
!lpfc_cmd->fcp_rsp->rspStatus3 &&
(lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) &&
@ -4133,16 +4127,16 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
}
switch (lpfc_cmd->status) {
case IOSTAT_SUCCESS:
case CQE_STATUS_SUCCESS:
cmd->result = DID_OK << 16;
break;
case IOSTAT_FCP_RSP_ERROR:
case CQE_STATUS_FCP_RSP_FAILURE:
lpfc_handle_fcp_err(vport, lpfc_cmd,
pwqeIn->wqe.fcp_iread.total_xfer_len -
wcqe->total_data_placed);
break;
case IOSTAT_NPORT_BSY:
case IOSTAT_FABRIC_BSY:
case CQE_STATUS_NPORT_BSY:
case CQE_STATUS_FABRIC_BSY:
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
fast_path_evt = lpfc_alloc_fast_evt(phba);
if (!fast_path_evt)
@ -4185,7 +4179,27 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
wcqe->total_data_placed,
lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
break;
case IOSTAT_REMOTE_STOP:
case CQE_STATUS_DI_ERROR:
if (bf_get(lpfc_wcqe_c_bg_edir, wcqe))
lpfc_cmd->result = IOERR_RX_DMA_FAILED;
else
lpfc_cmd->result = IOERR_TX_DMA_FAILED;
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_BG,
"9048 DI Error xri x%x status x%x DI ext "
"status x%x data placed x%x\n",
lpfc_cmd->cur_iocbq.sli4_xritag,
lpfc_cmd->status, wcqe->parameter,
wcqe->total_data_placed);
if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
/* BG enabled cmd. Parse BG error */
lpfc_parse_bg_err(phba, lpfc_cmd, pwqeOut);
break;
}
cmd->result = DID_ERROR << 16;
lpfc_printf_vlog(vport, KERN_WARNING, LOG_BG,
"9040 DI Error on unprotected cmd\n");
break;
case CQE_STATUS_REMOTE_STOP:
if (ndlp) {
/* This I/O was aborted by the target, we don't
* know the rxid and because we did not send the
@ -4196,7 +4210,7 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
0, 0);
}
fallthrough;
case IOSTAT_LOCAL_REJECT:
case CQE_STATUS_LOCAL_REJECT:
if (lpfc_cmd->result & IOERR_DRVR_MASK)
lpfc_cmd->status = IOSTAT_DRIVER_REJECT;
if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR ||
@ -4217,24 +4231,6 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
cmd->result = DID_TRANSPORT_DISRUPTED << 16;
break;
}
if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED ||
lpfc_cmd->result == IOERR_TX_DMA_FAILED) &&
status == CQE_STATUS_DI_ERROR) {
if (scsi_get_prot_op(cmd) !=
SCSI_PROT_NORMAL) {
/*
* This is a response for a BG enabled
* cmd. Parse BG error
*/
lpfc_parse_bg_err(phba, lpfc_cmd, pwqeOut);
break;
} else {
lpfc_printf_vlog(vport, KERN_WARNING,
LOG_BG,
"9040 non-zero BGSTAT "
"on unprotected cmd\n");
}
}
lpfc_printf_vlog(vport, KERN_WARNING, logit,
"9036 Local Reject FCP cmd x%x failed"
" <%d/%lld> "
@ -4253,10 +4249,8 @@ lpfc_fcp_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn,
lpfc_cmd->cur_iocbq.iocb.ulpIoTag);
fallthrough;
default:
if (lpfc_cmd->status >= IOSTAT_CNT)
lpfc_cmd->status = IOSTAT_DEFAULT;
cmd->result = DID_ERROR << 16;
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
"9037 FCP Completion Error: xri %x "
"status x%x result x%x [x%x] "
"placed x%x\n",
@ -5010,7 +5004,6 @@ lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
return -ENODEV;
}
phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth;
phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl;
return 0;
}