From: James Smart <jsmart2021@gmail.com>
Date: Mon, 5 Mar 2018 12:04:03 -0800
Subject: [PATCH] scsi: lpfc: Code cleanup for 128byte wqe data type
Patch-mainline: v4.17-rc1
Git-commit: 205e8240a1b42d32c08b0fae5778cbaa336c9c7f
References: bsc#1085387
The driver is very sloppy about the WQE structure passed between routines.
The base struct type is a 64byte wqe. But in many routines they typecast and
access 128byte wqes. There were a couple of cases in the past (corrected
already) where the typecasts were incorrectly done and the 64byte buffer was
accessed as a 128 byte buffer.
Clean this up by properly declaring wqe's as 128byte wqe's and removing the
typecasts. 64byte wqes are considered a subset of the 128byte wqes.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/scsi/lpfc/lpfc_hw4.h | 11 +++++--
drivers/scsi/lpfc/lpfc_nvme.c | 25 +++++++-------
drivers/scsi/lpfc/lpfc_nvmet.c | 12 +++----
drivers/scsi/lpfc/lpfc_sli.c | 74 ++++++++++++++++++------------------------
drivers/scsi/lpfc/lpfc_sli.h | 5 ++-
5 files changed, 61 insertions(+), 66 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 37c547b4bc78..a2f372d14eaa 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -4601,11 +4601,18 @@ union lpfc_wqe128 {
struct fcp_icmnd64_wqe fcp_icmd;
struct fcp_iread64_wqe fcp_iread;
struct fcp_iwrite64_wqe fcp_iwrite;
+ struct abort_cmd_wqe abort_cmd;
+ struct create_xri_wqe create_xri;
+ struct xmit_bcast64_wqe xmit_bcast64;
+ struct xmit_seq64_wqe xmit_sequence;
+ struct xmit_bls_rsp64_wqe xmit_bls_rsp;
+ struct xmit_els_rsp64_wqe xmit_els_rsp;
+ struct els_request64_wqe els_req;
+ struct gen_req64_wqe gen_req;
struct fcp_trsp64_wqe fcp_trsp;
struct fcp_tsend64_wqe fcp_tsend;
struct fcp_treceive64_wqe fcp_treceive;
- struct xmit_seq64_wqe xmit_sequence;
- struct gen_req64_wqe gen_req;
+ struct send_frame_wqe send_frame;
};
struct lpfc_grp_hdr {
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index 6ea6cc372647..6d215f27448f 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -275,14 +275,14 @@ lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
static int
lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp,
struct lpfc_dmabuf *inp,
- struct nvmefc_ls_req *pnvme_lsreq,
- void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *,
- struct lpfc_wcqe_complete *),
- struct lpfc_nodelist *ndlp, uint32_t num_entry,
- uint32_t tmo, uint8_t retry)
+ struct nvmefc_ls_req *pnvme_lsreq,
+ void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *,
+ struct lpfc_wcqe_complete *),
+ struct lpfc_nodelist *ndlp, uint32_t num_entry,
+ uint32_t tmo, uint8_t retry)
{
- struct lpfc_hba *phba = vport->phba;
- union lpfc_wqe *wqe;
+ struct lpfc_hba *phba = vport->phba;
+ union lpfc_wqe128 *wqe;
struct lpfc_iocbq *genwqe;
struct ulp_bde64 *bpl;
struct ulp_bde64 bde;
@@ -628,8 +628,7 @@ lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport,
* the dma address.
*/
- /* 128 byte wqe support here */
- wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe;
+ wqe = &lpfc_ncmd->cur_iocbq.wqe;
/*
* Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to
@@ -1048,7 +1047,7 @@ lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport,
struct lpfc_hba *phba = vport->phba;
struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq);
- union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&pwqeq->wqe;
+ union lpfc_wqe128 *wqe = &pwqeq->wqe;
uint32_t req_len;
if (!pnode || !NLP_CHK_NODE_ACT(pnode))
@@ -1187,7 +1186,7 @@ lpfc_nvme_prep_io_dma(struct lpfc_vport *vport,
{
struct lpfc_hba *phba = vport->phba;
struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd;
- union lpfc_wqe128 *wqe = (union lpfc_wqe128 *)&lpfc_ncmd->cur_iocbq.wqe;
+ union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe;
struct sli4_sge *sgl = lpfc_ncmd->nvme_sgl;
struct scatterlist *data_sg;
struct sli4_sge *first_data_sgl;
@@ -1595,7 +1594,7 @@ lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport,
struct lpfc_iocbq *abts_buf;
struct lpfc_iocbq *nvmereq_wqe;
struct lpfc_nvme_fcpreq_priv *freqpriv;
- union lpfc_wqe *abts_wqe;
+ union lpfc_wqe128 *abts_wqe;
unsigned long flags;
int ret_val;
@@ -2139,7 +2138,7 @@ lpfc_new_nvme_buf(struct lpfc_vport *vport, int num_to_alloc)
break;
}
pwqeq = &(lpfc_ncmd->cur_iocbq);
- wqe = (union lpfc_wqe128 *)&pwqeq->wqe;
+ wqe = &pwqeq->wqe;
/* Allocate iotag for lpfc_ncmd->cur_iocbq. */
iotag = lpfc_sli_next_iotag(phba, pwqeq);
diff --git a/drivers/scsi/lpfc/lpfc_nvmet.c b/drivers/scsi/lpfc/lpfc_nvmet.c
index a1ad18153ca9..0cd45904aaa3 100644
--- a/drivers/scsi/lpfc/lpfc_nvmet.c
+++ b/drivers/scsi/lpfc/lpfc_nvmet.c
@@ -1151,7 +1151,7 @@ lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
}
ctx_buf->iocbq->iocb_flag = LPFC_IO_NVMET;
nvmewqe = ctx_buf->iocbq;
- wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
+ wqe = &nvmewqe->wqe;
/* Initialize WQE */
memset(wqe, 0, sizeof(union lpfc_wqe));
/* Word 7 */
@@ -2025,7 +2025,7 @@ lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba,
{
struct lpfc_nodelist *ndlp;
struct lpfc_iocbq *nvmewqe;
- union lpfc_wqe *wqe;
+ union lpfc_wqe128 *wqe;
if (!lpfc_is_link_up(phba)) {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
@@ -2208,7 +2208,7 @@ lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
if (((ctxp->state == LPFC_NVMET_STE_RCV) &&
(ctxp->entry_cnt == 1)) ||
(ctxp->state == LPFC_NVMET_STE_DATA)) {
- wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
+ wqe = &nvmewqe->wqe;
} else {
lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
"6111 Wrong state NVMET FCP: %d cnt %d\n",
@@ -2750,7 +2750,7 @@ lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_iocbq *abts_wqeq;
- union lpfc_wqe *wqe_abts;
+ union lpfc_wqe128 *wqe_abts;
struct lpfc_nodelist *ndlp;
lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
@@ -2845,7 +2845,7 @@ lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_iocbq *abts_wqeq;
- union lpfc_wqe *abts_wqe;
+ union lpfc_wqe128 *abts_wqe;
struct lpfc_nodelist *ndlp;
unsigned long flags;
int rc;
@@ -3035,7 +3035,7 @@ lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
{
struct lpfc_nvmet_tgtport *tgtp;
struct lpfc_iocbq *abts_wqeq;
- union lpfc_wqe *wqe_abts;
+ union lpfc_wqe128 *wqe_abts;
unsigned long flags;
int rc;
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index d20cf51ca15d..7999a40e1370 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -109,7 +109,7 @@ lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq)
* The caller is expected to hold the hbalock when calling this routine.
**/
static int
-lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
+lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe128 *wqe)
{
union lpfc_wqe *temp_wqe;
struct lpfc_register doorbell;
@@ -8881,7 +8881,7 @@ lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
**/
static int
lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
- union lpfc_wqe *wqe)
+ union lpfc_wqe128 *wqe)
{
uint32_t xmit_len = 0, total_len = 0;
uint8_t ct = 0;
@@ -9096,29 +9096,27 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
if (phba->fcp_embed_io) {
struct lpfc_scsi_buf *lpfc_cmd;
struct sli4_sge *sgl;
- union lpfc_wqe128 *wqe128;
struct fcp_cmnd *fcp_cmnd;
uint32_t *ptr;
/* 128 byte wqe support here */
- wqe128 = (union lpfc_wqe128 *)wqe;
lpfc_cmd = iocbq->context1;
sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
fcp_cmnd = lpfc_cmd->fcp_cmnd;
/* Word 0-2 - FCP_CMND */
- wqe128->generic.bde.tus.f.bdeFlags =
+ wqe->generic.bde.tus.f.bdeFlags =
BUFF_TYPE_BDE_IMMED;
- wqe128->generic.bde.tus.f.bdeSize = sgl->sge_len;
- wqe128->generic.bde.addrHigh = 0;
- wqe128->generic.bde.addrLow = 88; /* Word 22 */
+ wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
+ wqe->generic.bde.addrHigh = 0;
+ wqe->generic.bde.addrLow = 88; /* Word 22 */
- bf_set(wqe_wqes, &wqe128->fcp_iwrite.wqe_com, 1);
- bf_set(wqe_dbde, &wqe128->fcp_iwrite.wqe_com, 0);
+ bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
+ bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
/* Word 22-29 FCP CMND Payload */
- ptr = &wqe128->words[22];
+ ptr = &wqe->words[22];
memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
}
break;
@@ -9162,29 +9160,27 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
if (phba->fcp_embed_io) {
struct lpfc_scsi_buf *lpfc_cmd;
struct sli4_sge *sgl;
- union lpfc_wqe128 *wqe128;
struct fcp_cmnd *fcp_cmnd;
uint32_t *ptr;
/* 128 byte wqe support here */
- wqe128 = (union lpfc_wqe128 *)wqe;
lpfc_cmd = iocbq->context1;
sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
fcp_cmnd = lpfc_cmd->fcp_cmnd;
/* Word 0-2 - FCP_CMND */
- wqe128->generic.bde.tus.f.bdeFlags =
+ wqe->generic.bde.tus.f.bdeFlags =
BUFF_TYPE_BDE_IMMED;
- wqe128->generic.bde.tus.f.bdeSize = sgl->sge_len;
- wqe128->generic.bde.addrHigh = 0;
- wqe128->generic.bde.addrLow = 88; /* Word 22 */
+ wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
+ wqe->generic.bde.addrHigh = 0;
+ wqe->generic.bde.addrLow = 88; /* Word 22 */
- bf_set(wqe_wqes, &wqe128->fcp_iread.wqe_com, 1);
- bf_set(wqe_dbde, &wqe128->fcp_iread.wqe_com, 0);
+ bf_set(wqe_wqes, &wqe->fcp_iread.wqe_com, 1);
+ bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 0);
/* Word 22-29 FCP CMND Payload */
- ptr = &wqe128->words[22];
+ ptr = &wqe->words[22];
memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
}
break;
@@ -9221,29 +9217,27 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
if (phba->fcp_embed_io) {
struct lpfc_scsi_buf *lpfc_cmd;
struct sli4_sge *sgl;
- union lpfc_wqe128 *wqe128;
struct fcp_cmnd *fcp_cmnd;
uint32_t *ptr;
/* 128 byte wqe support here */
- wqe128 = (union lpfc_wqe128 *)wqe;
lpfc_cmd = iocbq->context1;
sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl;
fcp_cmnd = lpfc_cmd->fcp_cmnd;
/* Word 0-2 - FCP_CMND */
- wqe128->generic.bde.tus.f.bdeFlags =
+ wqe->generic.bde.tus.f.bdeFlags =
BUFF_TYPE_BDE_IMMED;
- wqe128->generic.bde.tus.f.bdeSize = sgl->sge_len;
- wqe128->generic.bde.addrHigh = 0;
- wqe128->generic.bde.addrLow = 88; /* Word 22 */
+ wqe->generic.bde.tus.f.bdeSize = sgl->sge_len;
+ wqe->generic.bde.addrHigh = 0;
+ wqe->generic.bde.addrLow = 88; /* Word 22 */
- bf_set(wqe_wqes, &wqe128->fcp_icmd.wqe_com, 1);
- bf_set(wqe_dbde, &wqe128->fcp_icmd.wqe_com, 0);
+ bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1);
+ bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 0);
/* Word 22-29 FCP CMND Payload */
- ptr = &wqe128->words[22];
+ ptr = &wqe->words[22];
memcpy(ptr, fcp_cmnd, sizeof(struct fcp_cmnd));
}
break;
@@ -9481,8 +9475,7 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_iocbq *piocb, uint32_t flag)
{
struct lpfc_sglq *sglq;
- union lpfc_wqe *wqe;
- union lpfc_wqe128 wqe128;
+ union lpfc_wqe128 wqe;
struct lpfc_queue *wq;
struct lpfc_sli_ring *pring;
@@ -9502,9 +9495,7 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
/*
* The WQE can be either 64 or 128 bytes,
- * so allocate space on the stack assuming the largest.
*/
- wqe = (union lpfc_wqe *)&wqe128;
lockdep_assert_held(&phba->hbalock);
@@ -9554,10 +9545,10 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
return IOCB_ERROR;
}
- if (lpfc_sli4_iocb2wqe(phba, piocb, wqe))
+ if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe))
return IOCB_ERROR;
- if (lpfc_sli4_wq_put(wq, wqe))
+ if (lpfc_sli4_wq_put(wq, &wqe))
return IOCB_ERROR;
lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
@@ -10927,7 +10918,7 @@ lpfc_sli4_abort_nvme_io(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
{
struct lpfc_vport *vport = cmdiocb->vport;
struct lpfc_iocbq *abtsiocbp;
- union lpfc_wqe *abts_wqe;
+ union lpfc_wqe128 *abts_wqe;
int retval;
/*
@@ -19048,8 +19039,7 @@ lpfc_drain_txq(struct lpfc_hba *phba)
unsigned long iflags = 0;
char *fail_msg = NULL;
struct lpfc_sglq *sglq;
- union lpfc_wqe128 wqe128;
- union lpfc_wqe *wqe = (union lpfc_wqe *) &wqe128;
+ union lpfc_wqe128 wqe;
uint32_t txq_cnt = 0;
pring = lpfc_phba_elsring(phba);
@@ -19092,9 +19082,9 @@ lpfc_drain_txq(struct lpfc_hba *phba)
piocbq->sli4_xritag = sglq->sli4_xritag;
if (NO_XRI == lpfc_sli4_bpl2sgl(phba, piocbq, sglq))
fail_msg = "to convert bpl to sgl";
- else if (lpfc_sli4_iocb2wqe(phba, piocbq, wqe))
+ else if (lpfc_sli4_iocb2wqe(phba, piocbq, &wqe))
fail_msg = "to convert iocb to wqe";
- else if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, wqe))
+ else if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe))
fail_msg = " - Wq is full";
else
lpfc_sli_ringtxcmpl_put(phba, pring, piocbq);
@@ -19144,7 +19134,7 @@ lpfc_wqe_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeq,
struct ulp_bde64 bde;
struct sli4_sge *sgl = NULL;
struct lpfc_dmabuf *dmabuf;
- union lpfc_wqe *wqe;
+ union lpfc_wqe128 *wqe;
int numBdes = 0;
int i = 0;
uint32_t offset = 0; /* accumulated offset in the sg request list */
@@ -19253,7 +19243,7 @@ int
lpfc_sli4_issue_wqe(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_iocbq *pwqe)
{
- union lpfc_wqe *wqe = &pwqe->wqe;
+ union lpfc_wqe128 *wqe = &pwqe->wqe;
struct lpfc_nvmet_rcv_ctx *ctxp;
struct lpfc_queue *wq;
struct lpfc_sglq *sglq;
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
index a3b1b5145d2b..ad7b2e0a2018 100644
--- a/drivers/scsi/lpfc/lpfc_sli.h
+++ b/drivers/scsi/lpfc/lpfc_sli.h
@@ -61,9 +61,8 @@ struct lpfc_iocbq {
struct lpfc_wcqe_complete wcqe_cmpl; /* WQE cmpl */
uint64_t isr_timestamp;
- /* Be careful here */
- union lpfc_wqe wqe; /* WQE cmd */
- IOCB_t iocb; /* For IOCB cmd or if we want 128 byte WQE */
+ union lpfc_wqe128 wqe; /* SLI-4 */
+ IOCB_t iocb; /* SLI-3 */
uint8_t rsvd2;
uint8_t priority; /* OAS priority */
--
2.12.3